Evidence map›Paper›PMID 19771225›Full record

ArticleJournal of RNAi and gene silencing : an international journal of RNA and gene targeting research2006

Minimizing off-target effects by using diced siRNAs for RNA interference.

Jason W Myers, Jen-Tsan Chi, Delquin Gong, Marci E Schaner, Patrick O Brown, James E Ferrell

Abstract read
In one paragraph

Article in Journal of RNAi and gene silencing : an international journal of RNA and gene targeting research, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
1.2field-weighted citation impact, top 24% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 31 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Jason W MyersStanford University School of Medicine, Department of Molecular Pharmacology, 269 West Campus Drive, CCSR Room 3155, Stanford CA 94305-5174, USA.
Jen-Tsan Chi
Delquin Gong
Marci E Schaner
Patrick O Brown
James E Ferrell
Stanford University · US

Funding

GENE EXPRESSION IN CANCER BY MICROARRAY HYBRIDIZATIONR01CA077097 · NCI · STANFORD UNIVERSITY · PI BROWN, PATRICK O. · 1997 to 2010
$8.7M
THE ROLE OF MAP KINASE IN THE CELL CYCLER01GM046383 · NIGMS · UNIVERSITY OF WISCONSIN MADISON · PI FERRELL, JAMES E. · 1991 to 2018
$7.3M
NCI NIH HHS R01 CA077097NIGMS NIH HHS R01 GM046383
6 · The paper itself

Abstract

Microarray studies have shown that individual synthetic small interfering RNAs (siRNAs) can have substantial off-target effects. Pools of siRNAs, produced by incubation of dsRNAs with recombinant Dicer or RNase III, can also be used to silence genes. Here we show that diced siRNA pools are highly complex, containing hundreds of different individual siRNAs. This high complexity could either compound the problem of off-target effects, since the number of potentially problematic siRNAs is high, or it could diminish the problem, since the concentration of any individual problematic siRNA is low. We therefore compared the off-target effects of diced siRNAs to chemically synthesized siRNAs. In agreement with previous reports, we found that two chemically synthesized siRNAs targeted against p38alpha MAPK (MAPK14) induced off-target changes in the abundance of hundreds of mRNAs. In contrast, three diced siRNA pools against p38alpha MAPK had almost no off-target effects. The off-target effects of a synthetic siRNA were reduced when the siRNA was diluted 3-fold in a diced pool and completely alleviated when it was diluted 30- or 300-fold, suggesting that when problematic siRNAs are present within a diced pool, their absolute concentration is too low to result in significant off-target effects. These data rationalize the observed high specificity of RNA interference in C. elegans and D. melanogaster, where gene suppression is mediated by endogenously-generated diced siRNA pools, and provide a strategy for improving the specificity of RNA interference experiments and screens in mammalian cells.

Indexed as

d-siRNAe-siRNAgene silencingmicroarraymitogen activated protein kinase (MAPK)RNAisiRNA

Identifiers

PMID19771225
PMCPMC2737221
OpenAlexW1483274944

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.