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Small interfering RNA

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mutation in the transthyretin (TTR) gene which is inherited. Changing just one amino-acid changes the tetrameric transthyretin proteins, resulting in unstable tetrameric transthyretin protein that aggregates in monomers and forms insoluble extracellular amyloid deposits. Amyloid buildup in various organ systems causes cardiomyopathy, polyneuropathy, gastrointestinal dysfunction. It affects 50,000 people worldwide. To deliver the drug directly to the liver, siRNA is encased in a lipid nanoparticle. The siRNA molecule halts the production of amyloid proteins by interfering with the RNA production of abnormal TTR proteins. This prevents the accumulation of these proteins in different organs of the body and helps the patients manage this disease.
810:. The latter is the most efficient virus that stably delivers siRNA to target cells as it can transduce nondividing cells as well as directly target the nucleus. These specific viral vectors have been synthesized to effectively facilitate siRNA that is not viable for transfection into cells. Another aspect is that in some cases synthetic viral vectors can integrate siRNA into the cell genome which allows for stable expression of siRNA and long-term gene knockdown. This technique is advantageous because it is in vivo and effective for difficult to transfect cell. However problems arise because it can trigger antiviral responses in some cell types leading to mutagenic and immunogenic effects. 533:
for the treatment of autosomal dominant genetic disorders especially in cases where wild-type allele expression is crucial for organism survival such as Huntington disease (HD),DYT1 dystonia (Gonzalez-Alegre et al. 2003, 2005), Alzheimer's disease (Sierant et al. 2011), Parkinson's disease (PD) (Takahashi et al. 2015), amyloid lateral sclerosis (ALS) (Schwarz et al. 2006), and Machado–Joseph disease (Alves et al. 2008). Their therapeutic potential has also been assessed for various skin disorders like epidermolysis bullosa simplex (Atkinson et al. 2011), epidermolytic palmoplantar keratoderma (EPPK) (Lyu et al. 2016), and lattice corneal dystrophy type I (LCDI) (Courtney et al. 2014).
422:(RISC). The complex silences certain gene expression by cleaving the mRNA molecules coding the target genes. To begin the process, one of the two siRNA strands, the guide strand (anti-sense strand), will be loaded into the RISC while the other strand, the passenger strand (sense strand), is degraded. Certain Dicer enzymes may be responsible for loading the guide strand into RISC. Then, the siRNA scans for and directs RISC to perfectly complementary sequence on the mRNA molecules. The cleavage of the mRNA molecules is thought to be catalyzed by the Piwi domain of 590:
transfection experiments support a model where exogenous siRNAs can saturate the endogenous RNAi machinery, resulting in the de-repression of endogenous miRNA-regulated genes. Thus, while siRNAs can produce unwanted off-target effects, i.e. unintended downregulation of mRNAs via a partial sequence match between the siRNA and target, the saturation of RNAi machinery is another distinct nonspecific effect, which involves the de-repression of miRNA-regulated genes and results in similar problems in data interpretation and potential toxicity.
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cytokines via toll-like receptor 7 (TLR7) has also been described. Chemical modification of siRNA is employed to reduce in the activation of the innate immune response for gene function and therapeutic applications. One promising method of reducing the nonspecific effects is to convert the siRNA into a microRNA. MicroRNAs occur naturally, and by harnessing this endogenous pathway it should be possible to achieve similar gene knockdown at comparatively low concentrations of resulting siRNAs. This should minimize nonspecific effects.
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partly addressed by designing appropriate control experiments, and siRNA design algorithms are currently being developed to produce siRNAs free from off-targeting. Genome-wide expression analysis, e.g., by microarray technology, can then be used to verify this and further refine the algorithms. A 2006 paper from the laboratory of Dr. Khvorova implicates 6- or 7-basepair-long stretches from position 2 onward in the siRNA matching with 3'UTR regions in off-targeted genes. The tool of siRNA off-target predition is available at
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transitions because of heating. This results in the making of hydrophilic pores and localized perturbations in the lipid bilayer cell membrane also causing a temporary loss of semipermeability. This allows for the escape of many intracellular contents, such as ions and metabolites as well as the simultaneous uptake of drugs, molecular probes, and nucleic acids. For cells that are difficult to transfect electroporation is advantageous however cell death is more probable under this technique.
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temporary relief. Before Onpattro was released, the treatment options for hATTR were limited. After the approval of Onpattro, FDA awarded Alnylam with the Breakthrough Therapy Designation, which is given to drugs that are intended to treat a serious condition and are a substantial improvement over any available therapy. It was also awarded Orphan Drug Designations given to those treatments that are intended to safely treat conditions affecting less than 200,000 people.
4733: 463: 110: 599: 750:(RNAi) to be used therapeutically to reversibly silence any gene. For RNAi to realize its therapeutic potential, small interfering RNA (siRNA) must be delivered to the site of action in the cells of target tissues. But finding safe and efficient delivery mechanisms is a major obstacle to achieving the full potential of siRNA-based therapies.  Unmodified siRNA is unstable in the bloodstream, has the potential to cause 333: 581:
to the oligonucleotide reducing excretion and improving circulating half-life. However recently a large Phase III trial of PEGylated RNA aptamer against factor IX had to be discontinued by Regado Biosciences because of a severe anaphylactic reaction to the PEG part of the RNA. This reaction led to death in some cases and raises significant concerns about siRNA delivery when PEGylated oligonucleotides are involved.
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through which the therapies would enter the body. And that the immune system often mistakes the RNAi therapies as remnants of infectious agents, which can trigger an immune response. Animal models did not accurately represent the degree of immune response that was seen in humans and despite the promise in the treatment investors divested away from RNAi.
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Plain RNAs may be poor immunogens, but antibodies can easily be created against RNA-protein complexes. Many autoimmune diseases see these types of antibodies. There haven't yet been reports of antibodies against siRNA bound to proteins. Some methods for siRNA delivery adjoin polyethylene glycol (PEG)
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ASP-RNAi is an innovative category of RNAi with the objective of suppressing the dominant mutant allele while sparing expression of the corresponding normal allele with the specificity of single-nucleotide differences between the two. ASP-siRNAs are potentially a novel and better remedial alternative
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in adults. hATTR is a rare, progressively debilitating condition. During hATTR amyloidosis, misfolded transthyretin (TTR) protein is deposited in the extracellular space. Under typical folding conditions, TTR tetramers are made up of four monomers. Hereditary ATTR amyloidosis is caused by a fault or
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and Dicerna Pharmaceuticals are few of the companies still working on bringing RNAi therapies to market. It was learned that almost all siRNA therapies administered in the bloodstream accumulated in the liver. That is why most of the early drug targets were diseases that affected the liver. Repeated
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basepairing with mRNA. Therefore, any target molecule that needs to be treated with high affinity and specificity can be selected if the right nucleotide sequence is available. One of the biggest challenges researchers needed to overcome was the identification and establishment of a delivery system
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siRNAs have been chemically modified to enhance their therapeutic properties, Short interfering RNA (siRNA) must be delivered to the site of action in the cells of target tissues in order for RNAi to fulfill its therapeutic promise. A detailed database of all such chemical modifications is manually
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Off-targeting is another challenge to the use of siRNAs as a gene knockdown tool. Here, genes with incomplete complementarity are inadvertently downregulated by the siRNA (in effect, the siRNA acts as a miRNA), leading to problems in data interpretation and potential toxicity. This, however, can be
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Electrical pulses are also used to intracellularly deliver siRNA into cells. The cell membrane is made of phospholipids which makes it susceptible to an electric field. When quick but powerful electrical pulses are initiated the lipid molecules reorient themselves, while undergoing thermal phase
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Currently, SiRNA are currently chemically synthesized and so, are legally categorized inside EU and in USA as simple medicinal products. But as bioengineered siRNA (BERAs) are in development, these would be classified as biological medicinal products, at least in EU. The development of the BERAs
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RNAi intersects with a number of other pathways; as of 2010 it was not surprising that on occasion, nonspecific effects are triggered by the experimental introduction of an siRNA. When a mammalian cell encounters a double-stranded RNA such as an siRNA, it may mistake it as a viral by-product and
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A huge difficulty in siRNA delivery is the problem of off-targeting. Since genes are read in both directions, there exists a possibility that even if the intended antisense siRNA strand is read and knocks out the target mRNA, the sense siRNA strand may target another protein involved in another
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The activity of siRNAs in RNAi is largely dependent on its binding ability to the RNA-induced silencing complex (RISC). Binding of the duplex siRNA to RISC is followed by unwinding and cleavage of the sense strand with endonucleases. The remaining anti-sense strand-RISC complex can then bind to
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One of the potent applications of siRNAs is the ability to distinguish the target versus non-target sequence with a single-nucleotide difference. This approach has been considered as therapeutically crucial for the silencing dominant gain-of-function (GOF) disorders,where mutant allele causing
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Traditionally, liver transplantation has been the standard treatment for hereditary transthyretin amyloidosis, however its effectiveness may be limited by the persistent deposition of wild-type transthyretin amyloid after transplantation. There are also small molecule medications that provide
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mechanism in 1993, the pharmaceutical sector heavily invested in the research and development of siRNA therapy. There are several advantages that this therapy has over small molecules and antibodies. It can be administered quarterly or every six months. Another advantage is that, unlike small
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Introduction of too many siRNA can result in nonspecific events due to activation of innate immune responses. Most evidence to date suggests that this is probably due to activation of the dsRNA sensor PKR, although retinoic acid-inducible gene I (RIG-I) may also be involved. The induction of
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siRNAs transfection into cells typically lowers the expression of many genes, however, the upregulation of genes is also observed. The upregulation of gene expression can partially be explained by the predicted gene targets of endogenous miRNAs. Computational analyses of more than 150 siRNA
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are responsible for the silencing of transposons and are not siRNAs. PIWI-interacting RNAs (piRNAs) are a recently-discovered class of small non-coding RNAs (ncRNAs) with a length of 21-35 nucleotides. They play a role in gene expression regulation, transposon silencing, and viral infection
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The gene silencing effects of transfected designed siRNA are generally transient, but this difficulty can be overcome through an RNAi approach. Delivering this siRNA from DNA templates can be done through several recombinant viral vectors based on retrovirus, adeno-associated virus,
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proteins of the RISC. The mRNA molecule is then cut precisely by cleaving the phosphodiester bond between the target nucleotides which are paired to siRNA residues 10 and 11, counting from the 5'end. This cleavage results in mRNA fragments that are further degraded by cellular
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that synthetic siRNAs could induce RNAi in mammalian cells. In 2001, the expression of a specific gene was successfully silenced by introducing chemically synthesized siRNA into mammalian cells (Tuschl et al.) These discoveries led to a surge in interest in harnessing RNAi for
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Sometimes cleavage of the target mRNA molecule does not occur. In some cases, the endonucleolytic cleavage of the phosphodiester backbone may be suppressed by mismatches of siRNA and target mRNA near the cleaving site. Other times, the Argonaute proteins of the RISC lack
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Along with Onpattro, another RNA interference therapeutic drug has also been discovered (Partisiran) which has property of inhibiting hepatic synthesis of transthyretin. Target messenger RNA (mRNA) is cleaved as a result by tiny interfering RNAs coupled to the
500:), have been used to study small non coding RNA-directed Transcriptional gene silencing. In human cell, RNA-directed transcriptional gene silencing was observed a decade ago when exogenous siRNAs silenced a transgenic elongation factor 1 α promoter driving a 649:
A good nanovector for siRNA delivery should protect siRNA from degradation, enrich siRNA in the target organ and facilitate the cellular uptake of siRNA. The three main groups of siRNA nanovectors are: lipid based, non-lipid organic-based, and inorganic.
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In recent years, siRNA therapies have been approved and new methods have been established to overcome these challenges. There are approved therapies available for commercial use and several currently in the pipeline waiting to get approval.
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and have shown only mild effectiveness in localized delivery sites, such as the human eye. Delivering pure DNA to target organisms is challenging because its large size and structure prevents it from diffusing readily across
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Proof of concept trials have indicated that Ebola-targeted siRNAs may be effective as post-exposure prophylaxis in humans, with 100% of non-human primates surviving a lethal dose of Zaire Ebolavirus, the most lethal strain.
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Gomes MJ, Dreier J, Brewer J, Martins S, Brandl M, Sarmento B (April 2016). "A new approach for a blood-brain barrier model based on phospholipid vesicles: Membrane development and siRNA-loaded nanoparticles permeability".
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In this technique siRNA first must be designed against the target gene. Once the siRNA is configured against the gene it has to be effectively delivered through a transfection protocol. Delivery is usually done by
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The mRNA is now cut and recognized as abnormal by the cell. This causes degradation of the mRNA and in turn no translation of the mRNA into amino acids and then proteins. Thus silencing the gene that encodes that
677:. siRNAs that target and silence efflux proteins on the BBB surface have been shown to create an increase in BBB permeability. siRNA delivered via lipid based nanoparticles is able to cross the BBB completely. 550:, the introduction of an siRNA may cause unintended off-targeting. Chemical modifications of siRNA may alter the thermodynamic properties that also result in a loss of single nucleotide specificity. 888:. Patisiran, an investigational RNAi therapeutic drug, uses this process to decrease the production of mutant and wild-type transthyretin by cleaving on 3-untranslated region of transthyretin mRNA. 732:
technology raises the question of the categorization of drugs having the same mechanism of action but being produced chemically or biologically. This lack of consistency should be addressed.
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Birmingham A, Anderson EM, Reynolds A, Ilsley-Tyree D, Leake D, Fedorov Y, et al. (March 2006). "3' UTR seed matches, but not overall identity, are associated with RNAi off-targets".
402:. It has been shown that dsRNAs targeting gene promoters induce potent transcriptional activation of associated genes. RNAa was demonstrated in human cells using synthetic dsRNAs, termed " 447:). Dissociation of the target mRNA strand from RISC after the cleavage allow more mRNA to be silenced. This dissociation process is likely to be promoted by extrinsic factors driven by 529:
disease is differed from wt-allele by a single nucleotide (nt). These types of siRNAs with the capability to distinguish a single-nt difference, are termed as, allele-specific siRNAs.
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Years of research has led to a greater understanding of siRNA therapies beyond those affecting the liver. As of 2019, Alnylam Pharmaceuticals was involved in therapies that may treat
257:. Animal models have not been successful in accurately representing the extent of this response in humans. Hence, studying the effects of siRNA therapies has been a challenge.   2548:
Grimm D, Streetz KL, Jopling CL, Storm TA, Pandey K, Davis CR, et al. (May 2006). "Fatality in mice due to oversaturation of cellular microRNA/short hairpin RNA pathways".
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Hickerson RP, Smith FJ, Reeves RE, Contag CH, Leake D, Leachman SA, et al. (March 2008). "Single-nucleotide-specific siRNA targeting in a dominant-negative skin model".
906:(ALAS1), a liver enzyme involved in an early step in heme production. The downregulation of ALAS1 lowers the levels of neurotoxic intermediates that cause AHP symptoms. 1305:
Elbashir SM, Harborth J, Lendeckel W, Yalcin A, Weber K, Tuschl T (May 2001). "Duplexes of 21-nucleotide RNAs mediate RNA interference in cultured mammalian cells".
899:(PBG) molecules which are formed during the production of heme. These molecules accumulate in different organs and this can lead to the symptoms or attacks of AHP. 793:
This method has been used to deliver siRNA targeting VEGF into the xenografted tumors in nude mice, which resulted in a significant suppression of tumor growth.
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and have broader specificity of action, while siRNAs typically work with higher specificity by cleaving the mRNA before translation, with 100% complementarity.
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molecule to reduce the immune response, subsequently causing little to no side effects. Listed below are some of approved therapies or therapies in pipeline.
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of exogenous siRNA is often unsatisfactory because the effect is only transient, especially in rapidly dividing cells. This may be overcome by creating an
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Laganà A, Veneziano D, Russo F, Pulvirenti A, Giugno R, Croce CM, Ferro A (2015). "Computational Design of Artificial RNA Molecules for Gene Regulation".
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based nanovectors are excellent for delivering siRNA to solid tumors, but other cancers may require different non-lipid based organic nanovectors such as
646:. siRNA oligos circumvent this problem due to their small size of 21-23 oligos. This allows delivery via nano-scale delivery vehicles called nanovectors. 459:
activity even when the target mRNA and siRNA are perfectly paired. In such cases, gene expression will be silenced by an miRNA induced mechanism instead
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by a synthetic siRNA with a complementary sequence, siRNAs are an important tool for validating gene function and drug targeting in the post-genomic era.
285:. Dicer cuts the long dsRNA to form short interfering RNA or siRNA; this is what enables the molecules to form the RNA-Induced Silencing Complex (RISC). 2401:"ASPsiRNA: A Resource of ASP-siRNAs Having Therapeutic Potential for Human Genetic Disorders and Algorithm for Prediction of Their Inhibitory Efficacy" 1097:"ASPsiRNA: A Resource of ASP-siRNAs Having Therapeutic Potential for Human Genetic Disorders and Algorithm for Prediction of Their Inhibitory Efficacy" 3070:"Administration in non-human primates of escalating intravenous doses of targeted nanoparticles containing ribonucleotide reductase subunit M2 siRNA" 711:). The results showed clinical benefits, with the cancer either stabilized after six months, or regression of metastasis in some of the patients. 1700: 476:
inhibition. Once considered as "dark matter" of ncRNAs, piRNAs emerged as important players in multiple cellular functions in different organisms.
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Jackson AL, Linsley PS (January 2010). "Recognizing and avoiding siRNA off-target effects for target identification and therapeutic application".
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Barøy T, Sørensen K, Lindeberg MM, Frengen E (June 2010). "shRNA expression constructs designed directly from siRNA oligonucleotide sequences".
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samples from the patients revealed the presence of the RNAi constructs in the samples, proving that the molecules reached the intended target.
504:(GFP) reporter gene. The main mechanisms of transcriptional gene silencing (TGS) involving the RNAi machinery include DNA methylation, histone 466:
A simplified version of the Ping-Pong Method, involving proteins Aubergine (Aub) and Argonaute-3 (Ago3) cleaving the 3' and 5' ends of piRNA.
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Long dsRNA (which can come from hairpin, complementary RNAs, and RNA-dependent RNA polymerases) is cleaved by an endo-ribonuclease called
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It has been found that dsRNA can also activate gene expression, a mechanism that has been termed "small RNA-induced gene activation" or
3279:"Postexposure protection of non-human primates against a lethal Ebola virus challenge with RNA interference: a proof-of-concept study" 2754:"Designing potential siRNA molecules for silencing the gene of the nucleocapsid protein of Nipah virus: A computational investigation" 1964:"Computational Identification of piRNAs Using Features Based on RNA Sequence, Structure, Thermodynamic and Physicochemical Properties" 3913: 1911: 3459:"Comparison of small interfering RNA (siRNA) delivery into bovine monocyte-derived macrophages by transfection and electroporation" 2221:
Whitehead KA, Dahlman JE, Langer RS, Anderson DG (17 June 2011). "Silencing or stimulation? siRNA delivery and the immune system".
1413: 1159:, Caudy AA, Hammond SM, Hannon GJ (January 2001). "Role for a bidentate ribonuclease in the initiation step of RNA interference". 298:
The strand that is thermodynamically less stable due to its base pairing at the 5´end is chosen to remain part of the RISC-complex
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in scientific literature. Chemical modification of siRNA can also inadvertently result in loss of single-nucleotide specificity.
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One of the biggest challenges to siRNA and RNAi based therapeutics is intracellular delivery. siRNA also has weak stability and
4066: 3204: 630: 245:. Significant developments in siRNA therapies have been made with both organic (carbon based) and inorganic (non-carbon based) 1262:
Hamilton AJ, Baulcombe DC (October 1999). "A species of small antisense RNA in posttranscriptional gene silencing in plants".
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mosquito has shown there is some evidence for RNAa and can be achieved by short or long dsRNAs targeting promoter regions.
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Other companies that have had success in developing a pipeline of siRNA therapies are Dicerna Pharmaceuticals, partnered
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Chen, Zhihang; Krishnamachary, Balaji; Pachecho-Torres, Jesus; Penet, Marie-France; Bhujwalla, Zaver M. (March 2020).
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Infection, Genetics and Evolution: Journal of Molecular Epidemiology and Evolutionary Genetics in Infectious Diseases
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Cambon K, Déglon N (2013). "Lentiviral-Mediated Gene Transfer of siRNAs for the Treatment of Huntington's Disease".
2174:"Modified siRNA structure with a single nucleotide bulge overcomes conventional siRNA-mediated off-target silencing" 688:, aka AMD) reported at the end of 2005 that siRNAs are well tolerated and have suitable pharmacokinetic properties. 4701: 4172: 685: 505: 168: 90: 959:
have also invested heavily in siRNA therapies as they see the potential success of this area of biological drugs.
320:, however, miRNAs are derived from shorter stemloop RNA products. miRNAs typically silence genes by repression of 4706: 4100: 830:
molecule and monoclonal antibodies that need to recognize specific conformation of a protein, siRNA functions by
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The mechanism by which natural siRNA causes gene silencing through repression of translation occurs as follows:
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Petrocca F, Lieberman J (February 2011). "Promise and challenge of RNA interference-based therapy for cancer".
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for the siRNA. The siRNA sequence is modified to introduce a short loop between the two strands. The resulting
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Hannon GJ, Rossi JJ (September 2004). "Unlocking the potential of the human genome with RNA interference".
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and Neon Transfection. However, it is not compatible with all cell types and has low in vivo efficiency.
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promoter (e.g., U6 or H1) to direct the transcription of small nuclear RNAs (snRNAs) (U6 is involved in
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component of human RNase P). It is theorized that the resulting siRNA transcript is then processed by
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The single stranded siRNA which is part of the RISC complex now can scan and find a complementary mRNA
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modulate gene expression largely via incomplete complementarity base pair interactions with a target
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used to treat acute hepatic porphyria (AHP). The disease is caused due to the accumulation of toxic
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However, there were a few companies that continued with the development of RNAi therapy for humans.
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Tabernero J, Shapiro GI, LoRusso PM, Cervantes A, Schwartz GK, Weiss GJ, et al. (April 2013).
3223:"First-in-man study demonstrates the therapeutic effect of RNAi gene silencing in cancer treatment" 813:
This method has potential use in gene silencing of the central nervous system for the treatment of
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Mahfuz A, Khan MA, Sajib EH, Deb A, Mahmud S, Hasan M, Saha O, Islam A, Rahaman MM (August 2022).
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siRNAs delivered via lipid based nanoparticles have been shown to have therapeutic potential for
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Once the single stranded siRNA (part of the RISC complex) binds to its target mRNA, it induces
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Once the siRNA is part of the RISC complex, the siRNA is unwound to form single stranded siRNA.
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As of 2020, ONPATTRO and GIVLAARI, were available for commercial application, and two siRNAs,
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was approved for the treatment of polyneuropathy of hereditary transthyretin-mediated (hATTR)
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Eisenstein M (16 October 2019). "Pharma's roller-coaster relationship with RNA therapies".
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Naturally occurring siRNAs have a well-defined structure that is a short (usually 20 to 24-
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around DNA matching the siRNA, effectively silencing the genes in that region of the DNA.
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The siRNA-induced post transcriptional gene silencing is initiated by the assembly of the
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Geisbert TW, Lee AC, Robbins M, Geisbert JB, Honko AN, Sood V, et al. (May 2010).
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around the target gene into a heterochromatic state. SiRNAs can be incorporated into a
364: 3294: 3045: 3020: 2501:"Transfection of small RNAs globally perturbs gene regulation by endogenous microRNAs" 1981: 1732: 1715: 1655:"RNA activation in insects: The targeted activation of endogenous and exogenous genes" 4621: 4583: 4576: 4527: 4479: 4217: 4126: 4027: 3968: 3870: 3779: 3761: 3722: 3673: 3663: 3632: 3581: 3558: 3548: 3488: 3413: 3367: 3349: 3308: 3259: 3185: 3101: 3050: 3001: 2947: 2889: 2825: 2783: 2775: 2734: 2683: 2638: 2573: 2530: 2481: 2432: 2373: 2330: 2295: 2281: 2238: 2203: 2154: 2149: 2114: 2084: 2049: 1995: 1936: 1892: 1843: 1797: 1737: 1686: 1674: 1633: 1595: 1533: 1507: 1472: 1395: 1377: 1330: 1279: 1248: 1184: 1128: 1066: 1046: 764: 708: 622:
via siRNAs has generated a great deal of interest in both basic and applied biology.
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Sharei A, Zoldan J, Adamo A, Sim WY, Cho N, Jackson E, et al. (February 2013).
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Lee YS, Nakahara K, Pham JW, Kim K, He Z, Sontheimer EJ, Carthew RW (April 2004).
1358:"Theranostic small interfering RNA nanoparticles in cancer precision nanomedicine" 1342: 359:
is a short hairpin RNA (shRNA), which can be processed into a functional siRNA by
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of specific genes with complementary nucleotide sequences by degrading mRNA after
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Heidel JD, Yu Z, Liu JY, Rele SM, Liang Y, Zeidan RK, et al. (April 2007).
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developmental work also shed light on improving the chemical composition of the
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Once siRNA enters the cell it gets incorporated into other proteins to form the
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Proceedings of the National Academy of Sciences of the United States of America
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Proceedings of the National Academy of Sciences of the United States of America
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Proceedings of the National Academy of Sciences of the United States of America
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mount an immune response. Furthermore, because structurally related
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Text was copied from this source, which is available under a
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in its usual fashion. Typical transcription cassettes use an
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in vivo are vulnerable to degradation by plasma and tissue
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The gene knockdown efficiency can also be improved by using
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RNAi induction using siRNAs or their biosynthetic precursors
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Creative Commons Attribution 4.0 International License
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to develop therapies for CNS, eye and liver diseases.
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Legal categorization and legal issues in a near future
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Several other big pharmaceutical companies such as 1553: 3456: 3121: 3119: 3117: 3115: 3019:Elbashir SM, Lendeckel W, Tuschl T (January 2001). 2263: 2115:"Specificity of antisense oligonucleotides in vivo" 2112: 2011: 2009: 584: 3575: 2751: 1713: 3893:Investor Relations | Alnylam Pharmaceuticals, Inc 3739: 2918:"Nanovector delivery of siRNA for cancer therapy" 2807: 2016:Marc S, Weinberg; Kevin V, Morris (August 2016). 1765: 1261: 1214: 1212: 1210: 1208: 1206: 479: 4749: 3112: 2803: 2801: 2799: 2797: 2449: 2113:Woolf TM, Melton DA, Jennings CG (August 1992). 2006: 570:http://crdd.osdd.net/servers/aspsirna/asptar.php 3576:Talwar GP, Hasnain S, Sarin SK (January 2016). 3067: 2965: 2963: 2961: 2857: 2172:Dua P, Yoo JW, Kim S, Lee DK (September 2011). 1860: 1815: 1813: 1811: 1761: 1759: 1653:De Hayr L, Asad S, Hussain M, Asgari S (2020). 891:In 2019, FDA approved the second RNAi therapy, 3457:Jensen K, Anderson JA, Glass EJ (April 2014). 3325: 3153: 2915: 2108: 2106: 2066: 1203: 1090: 1088: 1086: 1084: 1082: 1080: 147:. siRNAs can also be introduced into cells by 132:3' ends with two overhanging nucleotides. The 4322: 4060: 3797:Commissioner, Office of the (24 March 2020). 3522:"siRNA Delivery Methods into Mammalian Cells" 2794: 2392: 2015: 1961: 1768:"Origins and Mechanisms of miRNAs and siRNAs" 1434: 3796: 3690: 3649: 3594: 3270: 3147: 3061: 3012: 2969: 2958: 2911: 2909: 2907: 2905: 2903: 2592: 2214: 2171: 1955: 1903: 1819: 1808: 1756: 1699:: CS1 maint: multiple names: authors list ( 1646: 1612: 1547: 575: 524:Applications: Allele-specific gene silencing 3942: 3600: 3326:Guerriaud, Mathieu; Kohli, Evelyne (2022). 2103: 1766:Carthew RW, Sontheimer EJ (February 2009). 1077: 439:while the 3' fragment is degraded from its 4336: 4329: 4315: 4067: 4053: 3505: 3154:Shukla RS, Qin B, Cheng K (October 2014). 2853: 2851: 2849: 2847: 2018:"Transcriptional gene silencing in humans" 1218: 854: 796: 4021: 3864: 3854: 3773: 3716: 3626: 3482: 3463:Veterinary Immunology and Immunopathology 3361: 3343: 3302: 3253: 3179: 3095: 3085: 3044: 2995: 2941: 2900: 2883: 2769: 2728: 2718: 2669: 2632: 2524: 2475: 2450:Wittrup A, Lieberman J (September 2015). 2426: 2289: 2197: 2148: 2138: 2043: 2033: 1989: 1886: 1837: 1791: 1731: 1615:The Novel Prize in Physiology or Medicine 1589: 1579: 1466: 1389: 1122: 1060: 735: 139:catalyzes production of siRNAs from long 3387: 2864:Signal Transduction and Targeted Therapy 2658:The Journal of Investigative Dermatology 2235:10.1146/annurev-chembioeng-061010-114133 1362:WIREs Nanomedicine and Nanobiotechnology 597: 593: 537:Challenges: avoiding nonspecific effects 461: 331: 271: 108: 73:(RNAi) pathway. It interferes with the 26: 3430: 2844: 614:Therapeutic applications and challenges 431:. The 5' fragment is degraded from its 197:in 2006. siRNAs and their role in post- 4750: 3202: 2916:Shen H, Sun T, Ferrari M (June 2012). 2707:Reproductive Biology and Endocrinology 4310: 4048: 3836: 3534: 2970:Burnett JC, Rossi JJ (January 2012). 2860:"Therapeutic siRNA: state of the art" 1861:Orban TI, Izaurralde E (April 2005). 514:RNA-induced transcriptional silencing 484:Many model organism, such as plants ( 151:. Since in principle any gene can be 1621: 1489: 572:and published as ASPsiRNA resource. 3843:The New England Journal of Medicine 2264:Matsumiya T, Stafforini DM (2010). 414:Post-transcriptional gene silencing 204:(PTGS) was discovered in plants by 13: 3935: 3601:Morris KV, Rossi JJ (March 2006). 1820:Tomari Y, Zamore PD (March 2005). 1627: 778: 553: 14: 4784: 4453:Micro 4040: 3691:Tiemann K, Rossi JJ (June 2009). 1982:10.2174/1389202920666191129112705 393: 4732: 4731: 4173:Cis-natural antisense transcript 4074: 3508:Textbook of Medical Biochemistry 2282:10.1615/critrevimmunol.v30.i6.10 1822:"Perspective: machines for RNAi" 1137: 921:. They have also partnered with 825:A decade after the discovery of 707:), and kinesin spindle protein ( 686:age-related macular degeneration 629:behavior. Delivery of siRNA via 585:Saturation of the RNAi machinery 562: 506:post-translational modifications 249:, which have been successful in 230:and colleagues soon reported in 169:Carnegie Institution for Science 91:Carnegie Institution for Science 85:. It was discovered in 1998, by 61:, typically 20–24 (normally 21) 4408:precursor, heterogenous nuclear 4101:Signal recognition particle RNA 3906: 3881: 3830: 3816: 3790: 3733: 3684: 3643: 3569: 3528: 3514: 3499: 3450: 3424: 3319: 3229: 3215: 3196: 2745: 2694: 2649: 2541: 2492: 2443: 2349: 2306: 2257: 2165: 2060: 1854: 1707: 1606: 1526: 1483: 757: 4538:Trans-acting small interfering 4502:Enhancer RNAs 4420:Transfer 3746:Advanced Drug Delivery Reviews 3652:Trinucleotide Repeat Protocols 2988:10.1016/j.chembiol.2011.12.008 2270:Critical Reviews in Immunology 1406: 1349: 1298: 1255: 1149: 1026: 904:aminolevulinic acid synthase 1 639:endonucleases and exonucleases 480:Transcriptional Gene Silencing 1: 4425:Ribosomal 4403:Messenger 3295:10.1016/S0140-6736(10)60357-1 2406:G3: Genes, Genomes, Genetics 2069:Nature Reviews Drug Discovery 1733:10.1016/s0092-8674(04)00261-2 1019: 886:RNA-induced silencing complex 746:There is great potential for 420:RNA-induced silencing complex 3837:David, Adams (5 July 2018). 3545:10.1007/978-1-4614-9632-8_11 3475:10.1016/j.vetimm.2014.02.002 3255:10.1158/2159-8290.CD-12-0429 3141:10.1016/j.memsci.2016.01.002 2810:Journal of Clinical Oncology 2771:10.1016/j.meegid.2022.105310 1962:Monga I, Banerjee I (2019). 1276:10.1126/science.286.5441.950 1102:G3: Genes, Genomes, Genetics 1043:10.1007/978-1-4939-2291-8_25 820: 443:by 5' -3' exoribonuclease 1( 264: 179:in Worcester discovered the 104: 7: 3660:10.1007/978-1-62703-411-1_7 3203:Tansey B (11 August 2006). 3129:Journal of Membrane Science 962: 177:University of Massachusetts 99:University of Massachusetts 69:, and operating within the 10: 4789: 4604:Multicopy single-stranded 4448:Interferential 4260:Reverse transcribing virus 4014:10.1038/s41467-020-15300-1 3758:10.1016/j.addr.2020.07.022 1784:10.1016/j.cell.2009.01.035 1671:10.1016/j.ibmb.2020.103325 1632:. Caister Academic Press. 1241:10.1038/d41586-019-03069-3 782: 739: 490:Saccharomyces cerevisiae 251:drug delivery to the brain 158: 18: 4727: 4662: 4612: 4555: 4518:Guide 4510: 4438: 4393: 4376: 4345: 4278: 4247: 4226: 4160: 4119: 4083: 3537:Electroporation Protocols 3345:10.3389/fmed.2022.1012497 2876:10.1038/s41392-020-0207-x 2327:10.1007/s12033-010-9247-8 1933:10.1038/s41576-018-0073-3 1534:"RNA Interference (RNAi)" 979:Oligonucleotide synthesis 945:Arrowhead Pharmaceuticals 923:Regeneron Pharmaceuticals 633:has shown promise. siRNA 576:Adaptive immune responses 502:Green Fluorescent Protein 336:Dicer protein colored by 316:siRNA is also similar to 4480:Small nuclear 2822:10.1200/JCO.2009.27.6287 2456:Nature Reviews. Genetics 193:for their research with 4594:Genomic 4227:Cis-regulatory elements 4198:Repeat-associated siRNA 3697:EMBO Molecular Medicine 3160:Molecular Pharmaceutics 3087:10.1073/pnas.0701458104 3025:Genes & Development 2976:Chemistry & Biology 2315:Molecular Biotechnology 2140:10.1073/pnas.89.16.7305 1920:Nature Reviews Genetics 1826:Genes & Development 1659:Insect Biochem Mol Biol 1581:10.1073/pnas.1218705110 1459:10.1093/database/bau103 1419:The Wall Street Journal 913:and CNS disorders like 861:Alnylam Pharmaceuticals 855:Alnylam Pharmaceuticals 840:Alnylam Pharmaceuticals 797:Viral-mediated delivery 494:Drosophila melanogaster 4697:Artificial chromosomes 4485:Small nucleolar 4111:Transfer-messenger RNA 3709:10.1002/emmm.200900023 3506:Chatterjea MN (2012). 2720:10.1186/1477-7827-7-45 2680:10.1038/sj.jid.5701060 2022:Nucleic Acids Research 742:Intracellular delivery 736:Intracellular delivery 663:central nervous system 602: 467: 341: 277: 186:Caenorhabditis elegans 113: 65:in length, similar to 42:), sometimes known as 32: 4763:Small interfering RNA 4490:Small Cajal Body RNAs 4203:Small interfering RNA 3994:Nature Communications 3856:10.1056/NEJMoa1716153 3619:10.1038/sj.gt.3302688 3332:Frontiers in Medicine 2419:10.1534/g3.117.044024 1115:10.1534/g3.117.044024 941:Eli Lilly and Company 658:based nanoparticles. 601: 594:Chemical modification 473:Piwi-interacting RNAs 465: 404:small activating RNAs 335: 275: 171:in Washington DC and 112: 93:in Washington DC and 44:short interfering RNA 36:Small interfering RNA 30: 4543:Subgenomic messenger 4458:Small interfering 4430:Transfer-messenger 4193:Piwi-interacting RNA 2505:Nature Biotechnology 1492:Nature Biotechnology 915:Huntington's disease 893:Givlaari (givosiran) 869:Onpattro (patisiran) 815:Huntington's disease 510:chromatin remodeling 486:Arabidopsis thaliana 210:Sainsbury Laboratory 4132:Small nucleolar RNA 4006:2020NatCo..11.1809D 3965:10.1038/nature02870 3957:2004Natur.431..371H 3402:2013NatMa..12..967K 2934:10.1038/cgt.2012.22 2922:Cancer Gene Therapy 2617:2016NatSR...620031D 2570:10.1038/nature04791 2562:2006Natur.441..537G 2190:10.1038/mt.2011.109 2131:1992PNAS...89.7305W 1879:10.1261/rna.7231505 1839:10.1101/gad.1284105 1572:2013PNAS..110.2082S 1504:10.1038/nbt0607-631 1319:2001Natur.411..494E 1233:2019Natur.574S...4E 1173:2001Natur.409..363B 949:Johnson and Johnson 919:Alzheimer's disease 701:lipid nanoparticles 671:blood brain barrier 239:biomedical research 122:double-stranded RNA 52:double-stranded RNA 4572:Chloroplast 4415:modified Messenger 4378:Ribonucleic acids 4213:Trans-acting siRNA 4208:Small temporal RNA 4183:Long noncoding RNA 3524:. 13 October 2016. 3431:Fanelli A (2016). 3289:(9729): 1896–905. 3037:10.1101/gad.862301 2605:Scientific Reports 2035:10.1093/nar/gkw139 1035:RNA Bioinformatics 844:Sirna Therapeutics 765:cationic liposomes 699:delivered through 603: 468: 365:RNA polymerase III 342: 278: 145:small hairpin RNAs 114: 33: 4768:Molecular biology 4745: 4744: 4622:Xeno 4584:Complementary 4557:Deoxyribonucleic 4551: 4550: 4528:Small hairpin 4304: 4303: 4218:Short hairpin RNA 4127:Small nuclear RNA 4084:Protein synthesis 3669:978-1-62703-410-4 3587:978-81-203-5125-7 3554:978-1-4614-9631-1 3172:10.1021/mp500426r 2625:10.1038/srep20031 2178:Molecular Therapy 2028:(14): 6505–6517. 1639:978-1-904455-25-7 1374:10.1002/wnan.1595 1052:978-1-4939-2290-1 697:administered RNAi 508:, and subsequent 353:expression vector 4780: 4735: 4734: 4712:Yeast 4533:Small temporal 4463:Piwi-interacting 4391: 4390: 4387: 4368:Deoxynucleotides 4331: 4324: 4317: 4308: 4307: 4069: 4062: 4055: 4046: 4045: 4035: 4025: 3984: 3929: 3928: 3926: 3924: 3910: 3904: 3903: 3901: 3899: 3885: 3879: 3878: 3868: 3858: 3834: 3828: 3827: 3820: 3814: 3813: 3811: 3809: 3794: 3788: 3787: 3777: 3737: 3731: 3730: 3720: 3688: 3682: 3681: 3647: 3641: 3640: 3630: 3598: 3592: 3591: 3573: 3567: 3566: 3532: 3526: 3525: 3518: 3512: 3511: 3503: 3497: 3496: 3486: 3454: 3448: 3447: 3445: 3443: 3428: 3422: 3421: 3410:10.1038/nmat3765 3385: 3376: 3375: 3365: 3347: 3323: 3317: 3316: 3306: 3274: 3268: 3267: 3257: 3242:Cancer Discovery 3233: 3227: 3226: 3219: 3213: 3212: 3200: 3194: 3193: 3183: 3166:(10): 3395–408. 3151: 3145: 3144: 3123: 3110: 3109: 3099: 3089: 3065: 3059: 3058: 3048: 3016: 3010: 3009: 2999: 2967: 2956: 2955: 2945: 2913: 2898: 2897: 2887: 2855: 2842: 2841: 2805: 2792: 2791: 2773: 2749: 2743: 2742: 2732: 2722: 2698: 2692: 2691: 2673: 2653: 2647: 2646: 2636: 2596: 2590: 2589: 2556:(7092): 537–41. 2545: 2539: 2538: 2528: 2517:10.1038/nbt.1543 2496: 2490: 2489: 2479: 2447: 2441: 2440: 2430: 2413:(9): 2931–2943. 2396: 2390: 2389: 2370:10.1038/nmeth854 2353: 2347: 2346: 2310: 2304: 2303: 2293: 2261: 2255: 2254: 2218: 2212: 2211: 2201: 2169: 2163: 2162: 2152: 2142: 2110: 2101: 2100: 2064: 2058: 2057: 2047: 2037: 2013: 2004: 2003: 1993: 1969:Current Genomics 1959: 1953: 1952: 1916: 1907: 1901: 1900: 1890: 1858: 1852: 1851: 1841: 1817: 1806: 1805: 1795: 1763: 1754: 1753: 1735: 1711: 1705: 1704: 1698: 1690: 1650: 1644: 1643: 1625: 1619: 1618: 1610: 1604: 1603: 1593: 1583: 1551: 1545: 1544: 1542: 1540: 1530: 1524: 1523: 1487: 1481: 1480: 1470: 1438: 1432: 1431: 1429: 1427: 1422:. 10 August 2018 1410: 1404: 1403: 1393: 1353: 1347: 1346: 1327:10.1038/35078107 1302: 1296: 1295: 1259: 1253: 1252: 1216: 1201: 1200: 1181:10.1038/35053110 1153: 1147: 1141: 1136: 1126: 1109:(9): 2931–2943. 1092: 1075: 1074: 1064: 1030: 748:RNA interference 243:drug development 220:and reported in 208:'s group at the 71:RNA interference 50:, is a class of 21:RNA interference 4788: 4787: 4783: 4782: 4781: 4779: 4778: 4777: 4748: 4747: 4746: 4741: 4723: 4664:Cloning vectors 4658: 4644:Locked 4608: 4558: 4547: 4506: 4434: 4381: 4380: 4372: 4341: 4335: 4305: 4300: 4274: 4255:Retrotransposon 4243: 4222: 4161:Gene regulation 4156: 4115: 4079: 4073: 4043: 4038: 3951:(7006): 371–8. 3938: 3936:Further reading 3933: 3932: 3922: 3920: 3912: 3911: 3907: 3897: 3895: 3887: 3886: 3882: 3835: 3831: 3822: 3821: 3817: 3807: 3805: 3795: 3791: 3738: 3734: 3689: 3685: 3670: 3648: 3644: 3599: 3595: 3588: 3574: 3570: 3555: 3533: 3529: 3520: 3519: 3515: 3504: 3500: 3469:(3–4): 224–32. 3455: 3451: 3441: 3439: 3433:"Transfection: 3429: 3425: 3396:(11): 967–977. 3386: 3379: 3324: 3320: 3275: 3271: 3234: 3230: 3221: 3220: 3216: 3201: 3197: 3152: 3148: 3124: 3113: 3080:(14): 5715–21. 3066: 3062: 3017: 3013: 2968: 2959: 2914: 2901: 2856: 2845: 2806: 2795: 2750: 2746: 2699: 2695: 2671:10.1.1.465.8240 2654: 2650: 2597: 2593: 2546: 2542: 2497: 2493: 2468:10.1038/nrg3978 2448: 2444: 2397: 2393: 2354: 2350: 2311: 2307: 2262: 2258: 2219: 2215: 2170: 2166: 2111: 2104: 2081:10.1038/nrd3010 2065: 2061: 2014: 2007: 1960: 1956: 1914: 1908: 1904: 1859: 1855: 1818: 1809: 1764: 1757: 1712: 1708: 1692: 1691: 1651: 1647: 1640: 1626: 1622: 1611: 1607: 1552: 1548: 1538: 1536: 1532: 1531: 1527: 1488: 1484: 1439: 1435: 1425: 1423: 1412: 1411: 1407: 1354: 1350: 1313:(6836): 494–8. 1303: 1299: 1270:(5441): 950–2. 1260: 1256: 1227:(7778): S4–S6. 1217: 1204: 1167:(6818): 363–6. 1154: 1150: 1093: 1078: 1053: 1031: 1027: 1022: 965: 947:partnered with 897:porphobilinogen 857: 823: 799: 787: 785:Electroporation 781: 779:Electroporation 760: 744: 738: 729: 713:Pharmacodynamic 627:pharmacokinetic 616: 596: 587: 578: 565: 556: 554:Innate immunity 539: 526: 518:heterochromatin 482: 416: 396: 330: 276:siRNA Mechanism 267: 255:innate immunity 206:David Baulcombe 199:transcriptional 189:. They won the 161: 107: 23: 17: 12: 11: 5: 4786: 4776: 4775: 4773:Non-coding RNA 4770: 4765: 4760: 4743: 4742: 4740: 4739: 4728: 4725: 4724: 4722: 4721: 4720: 4719: 4714: 4709: 4704: 4694: 4689: 4684: 4679: 4674: 4668: 4666: 4660: 4659: 4657: 4656: 4651: 4649:Peptide 4646: 4641: 4640: 4639: 4634: 4629: 4627:Glycol 4618: 4616: 4610: 4609: 4607: 4606: 4601: 4596: 4591: 4586: 4581: 4580: 4579: 4574: 4563: 4561: 4553: 4552: 4549: 4548: 4546: 4545: 4540: 4535: 4530: 4525: 4520: 4514: 4512: 4508: 4507: 4505: 4504: 4499: 4498: 4497: 4492: 4487: 4482: 4472: 4467: 4466: 4465: 4460: 4455: 4444: 4442: 4436: 4435: 4433: 4432: 4427: 4422: 4417: 4412: 4411: 4410: 4399: 4397: 4388: 4374: 4373: 4371: 4370: 4365: 4360: 4355: 4349: 4347: 4343: 4342: 4339:nucleic acids 4334: 4333: 4326: 4319: 4311: 4302: 4301: 4299: 4298: 4293: 4288: 4286:Telomerase RNA 4282: 4280: 4276: 4275: 4273: 4272: 4267: 4262: 4257: 4251: 4249: 4245: 4244: 4242: 4241: 4236: 4230: 4228: 4224: 4223: 4221: 4220: 4215: 4210: 4205: 4200: 4195: 4190: 4185: 4180: 4175: 4170: 4164: 4162: 4158: 4157: 4155: 4154: 4149: 4144: 4139: 4134: 4129: 4123: 4121: 4120:RNA processing 4117: 4116: 4114: 4113: 4108: 4103: 4098: 4093: 4087: 4085: 4081: 4080: 4072: 4071: 4064: 4057: 4049: 4042: 4041:External links 4039: 4037: 4036: 3985: 3939: 3937: 3934: 3931: 3930: 3918:BioPharma Dive 3905: 3880: 3829: 3815: 3789: 3732: 3683: 3668: 3642: 3593: 3586: 3568: 3553: 3527: 3513: 3498: 3449: 3423: 3377: 3318: 3269: 3228: 3214: 3195: 3146: 3111: 3060: 3031:(2): 188–200. 3011: 2957: 2899: 2843: 2793: 2744: 2693: 2664:(3): 594–605. 2648: 2591: 2540: 2491: 2442: 2391: 2364:(3): 199–204. 2358:Nature Methods 2348: 2305: 2276:(6): 489–513. 2256: 2213: 2184:(9): 1676–87. 2164: 2125:(16): 7305–9. 2102: 2059: 2005: 1976:(2): 508–518. 1954: 1902: 1853: 1807: 1755: 1706: 1645: 1638: 1620: 1605: 1546: 1525: 1482: 1433: 1405: 1348: 1297: 1254: 1202: 1148: 1076: 1051: 1024: 1023: 1021: 1018: 1017: 1016: 1011: 1006: 1001: 996: 991: 986: 981: 976: 974:Gene silencing 971: 969:Gene knockdown 964: 961: 932:(ALN-GO1) and 856: 853: 822: 819: 798: 795: 783:Main article: 780: 777: 759: 756: 752:immunogenicity 740:Main article: 737: 734: 728: 725: 695:to liver were 667:CNS) disorders 615: 612: 595: 592: 586: 583: 577: 574: 564: 561: 555: 552: 538: 535: 525: 522: 481: 478: 449:ATP hydrolysis 415: 412: 395: 394:RNA activation 392: 384:cell squeezing 345:Gene knockdown 338:protein domain 329: 326: 314: 313: 309: 302: 299: 296: 293: 286: 266: 263: 202:gene silencing 160: 157: 126:phosphorylated 106: 103: 101:in Worcester. 56:non-coding RNA 15: 9: 6: 4: 3: 2: 4785: 4774: 4771: 4769: 4766: 4764: 4761: 4759: 4756: 4755: 4753: 4738: 4730: 4729: 4726: 4718: 4715: 4713: 4710: 4708: 4705: 4703: 4700: 4699: 4698: 4695: 4693: 4690: 4688: 4685: 4683: 4680: 4678: 4675: 4673: 4670: 4669: 4667: 4665: 4661: 4655: 4652: 4650: 4647: 4645: 4642: 4638: 4635: 4633: 4632:Threose 4630: 4628: 4625: 4624: 4623: 4620: 4619: 4617: 4615: 4611: 4605: 4602: 4600: 4597: 4595: 4592: 4590: 4589:Deoxyribozyme 4587: 4585: 4582: 4578: 4577:Mitochondrial 4575: 4573: 4570: 4569: 4568: 4565: 4564: 4562: 4560: 4554: 4544: 4541: 4539: 4536: 4534: 4531: 4529: 4526: 4524: 4521: 4519: 4516: 4515: 4513: 4509: 4503: 4500: 4496: 4493: 4491: 4488: 4486: 4483: 4481: 4478: 4477: 4476: 4473: 4471: 4468: 4464: 4461: 4459: 4456: 4454: 4451: 4450: 4449: 4446: 4445: 4443: 4441: 4437: 4431: 4428: 4426: 4423: 4421: 4418: 4416: 4413: 4409: 4406: 4405: 4404: 4401: 4400: 4398: 4396: 4395:Translational 4392: 4389: 4385: 4379: 4375: 4369: 4366: 4364: 4361: 4359: 4356: 4354: 4351: 4350: 4348: 4344: 4340: 4332: 4327: 4325: 4320: 4318: 4313: 4312: 4309: 4297: 4294: 4292: 4289: 4287: 4284: 4283: 4281: 4277: 4271: 4268: 4266: 4263: 4261: 4258: 4256: 4253: 4252: 4250: 4246: 4240: 4239:SECIS element 4237: 4235: 4232: 4231: 4229: 4225: 4219: 4216: 4214: 4211: 4209: 4206: 4204: 4201: 4199: 4196: 4194: 4191: 4189: 4186: 4184: 4181: 4179: 4176: 4174: 4171: 4169: 4168:Antisense RNA 4166: 4165: 4163: 4159: 4153: 4150: 4148: 4145: 4143: 4140: 4138: 4135: 4133: 4130: 4128: 4125: 4124: 4122: 4118: 4112: 4109: 4107: 4104: 4102: 4099: 4097: 4096:Ribosomal RNA 4094: 4092: 4091:Messenger RNA 4089: 4088: 4086: 4082: 4078: 4070: 4065: 4063: 4058: 4056: 4051: 4050: 4047: 4033: 4029: 4024: 4019: 4015: 4011: 4007: 4003: 3999: 3995: 3991: 3986: 3982: 3978: 3974: 3970: 3966: 3962: 3958: 3954: 3950: 3946: 3941: 3940: 3919: 3915: 3909: 3894: 3890: 3884: 3876: 3872: 3867: 3862: 3857: 3852: 3848: 3844: 3840: 3833: 3825: 3819: 3804: 3800: 3793: 3785: 3781: 3776: 3771: 3767: 3763: 3759: 3755: 3751: 3747: 3743: 3736: 3728: 3724: 3719: 3714: 3710: 3706: 3703:(3): 142–51. 3702: 3698: 3694: 3687: 3679: 3675: 3671: 3665: 3661: 3657: 3653: 3646: 3638: 3634: 3629: 3624: 3620: 3616: 3612: 3608: 3604: 3597: 3589: 3583: 3579: 3572: 3564: 3560: 3556: 3550: 3546: 3542: 3538: 3531: 3523: 3517: 3509: 3502: 3494: 3490: 3485: 3480: 3476: 3472: 3468: 3464: 3460: 3453: 3438: 3437:Transfection" 3436: 3427: 3419: 3415: 3411: 3407: 3403: 3399: 3395: 3391: 3384: 3382: 3373: 3369: 3364: 3359: 3355: 3351: 3346: 3341: 3337: 3333: 3329: 3322: 3314: 3310: 3305: 3300: 3296: 3292: 3288: 3284: 3280: 3273: 3265: 3261: 3256: 3251: 3248:(4): 406–17. 3247: 3243: 3239: 3232: 3224: 3218: 3210: 3206: 3199: 3191: 3187: 3182: 3177: 3173: 3169: 3165: 3161: 3157: 3150: 3142: 3138: 3134: 3130: 3122: 3120: 3118: 3116: 3107: 3103: 3098: 3093: 3088: 3083: 3079: 3075: 3071: 3064: 3056: 3052: 3047: 3042: 3038: 3034: 3030: 3026: 3022: 3015: 3007: 3003: 2998: 2993: 2989: 2985: 2981: 2977: 2973: 2966: 2964: 2962: 2953: 2949: 2944: 2939: 2935: 2931: 2928:(6): 367–73. 2927: 2923: 2919: 2912: 2910: 2908: 2906: 2904: 2895: 2891: 2886: 2881: 2877: 2873: 2869: 2865: 2861: 2854: 2852: 2850: 2848: 2839: 2835: 2831: 2827: 2823: 2819: 2816:(6): 747–54. 2815: 2811: 2804: 2802: 2800: 2798: 2789: 2785: 2781: 2777: 2772: 2767: 2763: 2759: 2755: 2748: 2740: 2736: 2731: 2726: 2721: 2716: 2712: 2708: 2704: 2697: 2689: 2685: 2681: 2677: 2672: 2667: 2663: 2659: 2652: 2644: 2640: 2635: 2630: 2626: 2622: 2618: 2614: 2610: 2606: 2602: 2595: 2587: 2583: 2579: 2575: 2571: 2567: 2563: 2559: 2555: 2551: 2544: 2536: 2532: 2527: 2522: 2518: 2514: 2511:(6): 549–55. 2510: 2506: 2502: 2495: 2487: 2483: 2478: 2473: 2469: 2465: 2462:(9): 543–52. 2461: 2457: 2453: 2446: 2438: 2434: 2429: 2424: 2420: 2416: 2412: 2408: 2407: 2402: 2395: 2387: 2383: 2379: 2375: 2371: 2367: 2363: 2359: 2352: 2344: 2340: 2336: 2332: 2328: 2324: 2321:(2): 116–20. 2320: 2316: 2309: 2301: 2297: 2292: 2287: 2283: 2279: 2275: 2271: 2267: 2260: 2252: 2248: 2244: 2240: 2236: 2232: 2228: 2224: 2217: 2209: 2205: 2200: 2195: 2191: 2187: 2183: 2179: 2175: 2168: 2160: 2156: 2151: 2146: 2141: 2136: 2132: 2128: 2124: 2120: 2116: 2109: 2107: 2098: 2094: 2090: 2086: 2082: 2078: 2074: 2070: 2063: 2055: 2051: 2046: 2041: 2036: 2031: 2027: 2023: 2019: 2012: 2010: 2001: 1997: 1992: 1987: 1983: 1979: 1975: 1971: 1970: 1965: 1958: 1950: 1946: 1942: 1938: 1934: 1930: 1927:(2): 89–108. 1926: 1922: 1921: 1913: 1906: 1898: 1894: 1889: 1884: 1880: 1876: 1873:(4): 459–69. 1872: 1868: 1864: 1857: 1849: 1845: 1840: 1835: 1832:(5): 517–29. 1831: 1827: 1823: 1816: 1814: 1812: 1803: 1799: 1794: 1789: 1785: 1781: 1778:(4): 642–55. 1777: 1773: 1769: 1762: 1760: 1751: 1747: 1743: 1739: 1734: 1729: 1725: 1721: 1717: 1710: 1702: 1696: 1688: 1684: 1680: 1676: 1672: 1668: 1664: 1660: 1656: 1649: 1641: 1635: 1631: 1624: 1616: 1609: 1601: 1597: 1592: 1587: 1582: 1577: 1573: 1569: 1566:(6): 2082–7. 1565: 1561: 1557: 1550: 1535: 1529: 1521: 1517: 1513: 1509: 1505: 1501: 1497: 1493: 1486: 1478: 1474: 1469: 1464: 1460: 1456: 1452: 1448: 1444: 1437: 1421: 1420: 1415: 1409: 1401: 1397: 1392: 1387: 1383: 1379: 1375: 1371: 1367: 1363: 1359: 1352: 1344: 1340: 1336: 1332: 1328: 1324: 1320: 1316: 1312: 1308: 1301: 1293: 1289: 1285: 1281: 1277: 1273: 1269: 1265: 1258: 1250: 1246: 1242: 1238: 1234: 1230: 1226: 1222: 1215: 1213: 1211: 1209: 1207: 1198: 1194: 1190: 1186: 1182: 1178: 1174: 1170: 1166: 1162: 1158: 1152: 1145: 1140: 1134: 1130: 1125: 1120: 1116: 1112: 1108: 1104: 1103: 1098: 1091: 1089: 1087: 1085: 1083: 1081: 1072: 1068: 1063: 1058: 1054: 1048: 1044: 1040: 1036: 1029: 1025: 1015: 1012: 1010: 1007: 1005: 1002: 1000: 997: 995: 992: 990: 987: 985: 982: 980: 977: 975: 972: 970: 967: 966: 960: 958: 954: 950: 946: 942: 937: 935: 931: 926: 924: 920: 916: 912: 907: 905: 900: 898: 894: 889: 887: 881: 877: 874: 870: 866: 862: 852: 850: 845: 841: 836: 833: 828: 818: 816: 811: 809: 805: 794: 791: 786: 776: 774: 773:Lipofectamine 771:of siRNA are 770: 766: 755: 753: 749: 743: 733: 724: 720: 718: 714: 710: 706: 702: 698: 694: 689: 687: 682: 678: 676: 672: 668: 664: 659: 657: 653: 647: 645: 640: 636: 632: 631:nanoparticles 628: 623: 621: 611: 609: 600: 591: 582: 573: 571: 563:Off-targeting 560: 551: 549: 545: 534: 530: 521: 519: 515: 511: 507: 503: 499: 496:) and worms ( 495: 491: 487: 477: 474: 470: 464: 460: 458: 452: 450: 446: 442: 438: 434: 430: 425: 421: 411: 409: 408:Aedes aegypti 405: 401: 391: 387: 385: 380: 378: 374: 370: 366: 362: 358: 354: 350: 346: 339: 334: 325: 323: 319: 310: 307: 303: 300: 297: 294: 291: 287: 284: 280: 279: 274: 270: 262: 258: 256: 252: 248: 247:nanoparticles 244: 240: 235: 234: 229: 228:Thomas Tuschl 225: 224: 219: 215: 211: 207: 203: 200: 196: 192: 188: 187: 182: 178: 174: 170: 166: 156: 154: 150: 146: 142: 138: 135: 131: 127: 124:(dsRNA) with 123: 119: 111: 102: 100: 96: 92: 88: 84: 81:, preventing 80: 79:transcription 76: 72: 68: 64: 60: 57: 53: 49: 48:silencing RNA 45: 41: 37: 29: 25: 22: 4707:Bacterial 4682:Lambda phage 4457: 4346:Constituents 4296:List of RNAs 4202: 4106:Transfer RNA 3997: 3993: 3948: 3944: 3921:. Retrieved 3917: 3908: 3896:. Retrieved 3892: 3883: 3849:(1): 11–21. 3846: 3842: 3832: 3818: 3806:. Retrieved 3802: 3792: 3749: 3745: 3735: 3700: 3696: 3686: 3651: 3645: 3613:(6): 553–8. 3610: 3607:Gene Therapy 3606: 3596: 3577: 3571: 3536: 3530: 3516: 3507: 3501: 3466: 3462: 3452: 3440:. Retrieved 3434: 3426: 3393: 3389: 3335: 3331: 3321: 3286: 3282: 3272: 3245: 3241: 3231: 3217: 3208: 3198: 3163: 3159: 3149: 3132: 3128: 3077: 3073: 3063: 3028: 3024: 3014: 2982:(1): 60–71. 2979: 2975: 2925: 2921: 2867: 2863: 2813: 2809: 2761: 2757: 2747: 2710: 2706: 2696: 2661: 2657: 2651: 2611:(1): 20031. 2608: 2604: 2594: 2553: 2549: 2543: 2508: 2504: 2494: 2459: 2455: 2445: 2410: 2404: 2394: 2361: 2357: 2351: 2318: 2314: 2308: 2273: 2269: 2259: 2229:(1): 77–96. 2226: 2222: 2216: 2181: 2177: 2167: 2122: 2118: 2075:(1): 57–67. 2072: 2068: 2062: 2025: 2021: 1973: 1967: 1957: 1924: 1918: 1905: 1870: 1866: 1856: 1829: 1825: 1775: 1771: 1726:(1): 69–81. 1723: 1719: 1709: 1695:cite journal 1662: 1658: 1648: 1629: 1623: 1614: 1608: 1563: 1559: 1549: 1537:. Retrieved 1528: 1498:(6): 631–8. 1495: 1491: 1485: 1450: 1446: 1436: 1424:. Retrieved 1417: 1408: 1368:(2): e1595. 1365: 1361: 1351: 1310: 1306: 1300: 1267: 1263: 1257: 1224: 1220: 1164: 1160: 1151: 1106: 1100: 1034: 1028: 938: 927: 908: 901: 890: 882: 878: 858: 837: 832:Watson-Crick 824: 812: 800: 792: 788: 769:transfection 761: 758:Transfection 745: 730: 721: 715:analysis of 693:metastasised 690: 683: 679: 660: 656:cyclodextrin 648: 624: 617: 604: 588: 579: 566: 557: 540: 531: 527: 483: 471: 469: 457:endonuclease 453: 429:exonucleases 417: 407: 397: 388: 381: 371:; H1 is the 369:RNA splicing 349:transfection 343: 315: 268: 259: 232: 222: 184: 162: 153:knocked down 149:transfection 130:hydroxylated 128:5' ends and 115: 47: 43: 39: 35: 34: 24: 4702:P1-derived 4470:Antisense 4363:Nucleotides 4358:Nucleosides 4353:Nucleobases 4000:(1): 1809. 3866:2445/138257 1157:Bernstein E 957:AstraZeneca 911:amyloidosis 873:amyloidosis 606:curated as 322:translation 191:Nobel prize 173:Craig Mello 165:Andrew Fire 95:Craig Mello 87:Andrew Fire 83:translation 16:Biomolecule 4752:Categories 4654:Morpholino 4567:Organellar 4475:Processual 4440:Regulatory 4384:non-coding 4234:Riboswitch 4178:CRISPR RNA 3442:5 December 2870:(1): 101. 2764:: 105310. 1665:: 103325. 1453:: bau103. 1020:References 999:VIRsiRNAdb 934:inclisiran 808:lentivirus 804:adenovirus 681:function. 498:C. elegans 492:), flies ( 488:), yeast ( 357:transcript 75:expression 63:base pairs 19:See also: 4614:Analogues 4599:Hachimoji 4382:(coding, 4337:Types of 4291:Vault RNA 4265:RNA virus 4248:Parasites 4147:RNase MRP 4137:Guide RNA 4075:Types of 3766:0169-409X 3752:: 64–78. 3390:Nat Mater 3354:2296-858X 2780:1567-7257 2713:(1): 45. 2666:CiteSeerX 1687:210891954 1382:1939-5116 1249:204741280 1014:Persomics 1009:Dharmacon 930:lumasiran 859:In 2018, 821:Therapies 644:membranes 544:microRNAs 424:Argonaute 308:cleavage. 265:Mechanism 226:in 1999. 163:In 1998, 105:Structure 59:molecules 54:at first 4737:Category 4672:Phagemid 4523:Ribozyme 4188:MicroRNA 4032:32286269 3973:15372045 3875:29972753 3784:32768564 3727:20049714 3678:23754221 3637:16397511 3563:24510818 3493:24598124 3435:In Vitro 3418:24150415 3372:36325384 3313:20511019 3264:23358650 3190:25157701 3135:: 8–15. 3106:17379663 3055:11157775 3006:22284355 2952:22555511 2894:32561705 2838:15337692 2830:21079135 2788:35636695 2739:19439102 2688:17914454 2643:26818131 2586:15118504 2578:16724069 2535:19465925 2486:26281785 2437:28696921 2386:52809577 2378:16489337 2343:24309609 2335:20119685 2300:21175414 2251:28803811 2243:22432611 2208:21673662 2097:20903257 2089:20043028 2054:27060137 2000:32655289 1949:53565676 1941:30446728 1897:15703439 1848:15741316 1802:19239886 1742:15066283 1679:31978586 1600:23341631 1520:35357127 1512:17557095 1477:25380780 1447:Database 1426:26 March 1400:31642207 1335:11373684 1292:17480249 1284:10542148 1189:11201747 1133:28696921 1071:25577393 989:NatsiRNA 963:See also 608:siRNAmod 4677:Plasmid 4142:RNase P 4023:7156650 4002:Bibcode 3981:4410723 3953:Bibcode 3775:7406478 3718:3378126 3628:7091755 3484:3988888 3398:Bibcode 3363:9618588 3304:7138079 3181:4186677 3097:1829492 2997:3269031 2943:3842228 2885:7305320 2730:2686705 2634:4730238 2613:Bibcode 2558:Bibcode 2526:2782465 2477:4756474 2428:5592921 2291:3099591 2199:3182346 2159:1380154 2127:Bibcode 2045:5001580 1991:7327968 1888:1370735 1793:2675692 1750:6683459 1591:3568376 1568:Bibcode 1539:27 July 1468:4224276 1391:7360334 1315:Bibcode 1264:Science 1229:Bibcode 1197:4371481 1169:Bibcode 1124:5592921 1062:4425273 437:exosome 223:Science 218:England 214:Norwich 159:History 4692:Fosmid 4687:Cosmid 4637:Hexose 4559:acids 4511:Others 4270:Viroid 4030:  4020:  3979:  3971:  3945:Nature 3923:24 May 3898:24 May 3873:  3808:24 May 3782:  3772:  3764:  3725:  3715:  3676:  3666:  3635:  3625:  3584:  3561:  3551:  3491:  3481:  3416:  3370:  3360:  3352:  3311:  3301:  3283:Lancet 3262:  3209:SFGATE 3188:  3178:  3104:  3094:  3053:  3046:312613 3043:  3004:  2994:  2950:  2940:  2892:  2882:  2836:  2828:  2786:  2778:  2737:  2727:  2686:  2668:  2641:  2631:  2584:  2576:  2550:Nature 2533:  2523:  2484:  2474:  2435:  2425:  2384:  2376:  2341:  2333:  2298:  2288:  2249:  2241:  2206:  2196:  2157:  2147:  2095:  2087:  2052:  2042:  1998:  1988:  1947:  1939:  1895:  1885:  1846:  1800:  1790:  1748:  1740:  1685:  1677:  1636:  1598:  1588:  1518:  1510:  1475:  1465:  1398:  1388:  1380:  1343:710341 1341:  1333:  1307:Nature 1290:  1282:  1247:  1221:Nature 1195:  1187:  1161:Nature 1131:  1121:  1069:  1059:  1049:  1004:CRISPR 994:Viroid 984:EsiRNA 806:, and 717:biopsy 635:oligos 441:5' end 433:3' end 233:Nature 141:dsRNAs 137:enzyme 4717:Human 4495:Y RNA 4279:Other 4152:Y RNA 3977:S2CID 2834:S2CID 2582:S2CID 2382:S2CID 2339:S2CID 2247:S2CID 2150:49698 2093:S2CID 1945:S2CID 1915:(PDF) 1746:S2CID 1683:S2CID 1516:S2CID 1339:S2CID 1288:S2CID 1245:S2CID 1193:S2CID 953:Amgen 675:brain 652:Lipid 377:Dicer 373:RNase 361:Dicer 318:miRNA 312:mRNA. 283:Dicer 134:Dicer 67:miRNA 40:siRNA 4028:PMID 3969:PMID 3925:2021 3900:2021 3871:PMID 3810:2021 3780:PMID 3762:ISSN 3723:PMID 3674:PMID 3664:ISBN 3633:PMID 3582:ISBN 3559:PMID 3549:ISBN 3489:PMID 3444:2017 3414:PMID 3368:PMID 3350:ISSN 3309:PMID 3260:PMID 3186:PMID 3102:PMID 3051:PMID 3002:PMID 2948:PMID 2890:PMID 2826:PMID 2784:PMID 2776:ISSN 2735:PMID 2684:PMID 2639:PMID 2574:PMID 2531:PMID 2482:PMID 2433:PMID 2374:PMID 2331:PMID 2296:PMID 2239:PMID 2204:PMID 2155:PMID 2085:PMID 2050:PMID 1996:PMID 1937:PMID 1893:PMID 1844:PMID 1798:PMID 1772:Cell 1738:PMID 1720:Cell 1701:link 1675:PMID 1634:ISBN 1596:PMID 1541:2018 1508:PMID 1473:PMID 1451:2014 1428:2021 1396:PMID 1378:ISSN 1331:PMID 1280:PMID 1185:PMID 1129:PMID 1067:PMID 1047:ISBN 955:and 943:and 917:and 827:RNAi 705:VEGF 620:RNAi 548:mRNA 445:XRN1 400:RNAa 306:mRNA 290:RISC 241:and 195:RNAi 181:RNAi 143:and 4758:RNA 4077:RNA 4018:PMC 4010:doi 3961:doi 3949:431 3861:hdl 3851:doi 3847:379 3803:FDA 3770:PMC 3754:doi 3750:154 3713:PMC 3705:doi 3656:doi 3623:PMC 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Index

RNA interference

double-stranded RNA
non-coding RNA
molecules
base pairs
miRNA
RNA interference
expression
transcription
translation
Andrew Fire
Carnegie Institution for Science
Craig Mello
University of Massachusetts

bp
double-stranded RNA
phosphorylated
hydroxylated
Dicer
enzyme
dsRNAs
small hairpin RNAs
transfection
knocked down
Andrew Fire
Carnegie Institution for Science
Craig Mello
University of Massachusetts

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