Evidence map›Paper›PMID 21327957›Full record

ArticleDevelopment genes and evolution2011

Development of an RNA interference method in the cladoceran crustacean Daphnia magna.

Yasuhiko Kato, Yasuhiro Shiga, Kaoru Kobayashi, Shin-ichi Tokishita, Hideo Yamagata, Taisen Iguchi, Hajime Watanabe

Abstract read
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Article in Development genes and evolution, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed
4.1field-weighted citation impact, top 5% 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

56 citing papers in PubMed, 109 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

7 authors at 4 institutions in 1 country.

Yasuhiko KatoOkazaki Institute for Integrative Bioscience, Myodaiji, Aichi, Japan.
Yasuhiro Shiga
Kaoru Kobayashi
Shin-ichi Tokishita
Hideo Yamagata
Taisen Iguchi
Hajime Watanabe
Tokyo University of Pharmacy and Life Sciences · JPNational Institutes of Natural Sciences · JPOkazaki Institute for Integrative Bioscience · JPOsaka University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Daphnids are small crustaceans ubiquitous in fresh water; they have been a subject of study in ecology, evolution, and environmental sciences for decades. To understand data accumulated in daphnid biology at the molecular level, expressed sequence tags and a genome sequence have been determined. However, these discoveries lead to the problem of how to understand the functions of newly discovered genes. Double-stranded RNA (dsRNA)-mediated RNA interference (RNAi) is a useful tool to achieve specific gene silencing in nontransformable species. Hence, we established a technique to inject exogenous materials into ovulated eggs and developed a dsRNA-based RNAi method for Daphnia magna. Eggs were collected just after ovulation and injected with dsRNA specific to the Distal-less (Dll) gene, which functions in appendage development in invertebrates and vertebrates. We found that the dsRNA successfully triggered the degradation of Dll mRNAs, which induced the truncation of the second antenna in a dose-dependent manner. This effect was sequence specific in that: (1) an unrelated dsRNA did not induce any morphological abnormalities and (2) two non-overlapping Dll dsRNAs generated the same phenotype. This is the first report of an RNAi technique in D. magna and, together with the emerging genome sequences, will be useful for advancing knowledge of the molecular biology of daphnids.

Indexed as

RNA InterferenceAmino Acid SequenceAnimalsBase SequenceCloning, MolecularDaphniaMolecular Sequence DataRNA, Double-StrandedSequence AlignmentRNA, Double-Stranded

Identifiers

PMID21327957
OpenAlexW1993246714

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.