Evidence map›Paper›PMID 34492009›Full record

ArticlePLoS genetics2021

Genes in human obesity loci are causal obesity genes in C. elegans.

Wenfan Ke, Jordan N Reed, Chenyu Yang, Noel Higgason, Leila Rayyan, Carolina Wählby, Anne E Carpenter, Mete Civelek, Eyleen J O'Rourke

Open access · goldAbstract read
In one paragraph

Article in PLoS genetics, 2021. 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
2.2field-weighted citation impact, top 12% 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.

  1. Evaluating the Validity of Model Organisms: A Review and a New Framework for Biologists.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
    Review
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  3. A conservedbioRxiv : the preprint server for biology · 2026
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  6. Anti-obesity peptides from food: Production, evaluation, sources, and commercialization.Comprehensive reviews in food science and food safety · 2025
    Review
  7. Article
  8. Inferring causal direction between two traits using RAmerican journal of human genetics · 2024
    Article
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  15. Review
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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

9 authors at 3 institutions in 2 countries.

Wenfan KeDepartment of Biology, College of Arts and Sciences, University of Virginia, Charlottesville, Virginia, United States of America.ORCID 0000-0002-7047-5445
Jordan N ReedDepartment of Biomedical Engineering, School of Engineering and Applied Science, University of Virginia, Charlottesville, Virginia, United States of America.ORCID 0000-0002-6190-9037
Chenyu YangDepartment of Biology, College of Arts and Sciences, University of Virginia, Charlottesville, Virginia, United States of America.ORCID 0000-0001-6319-965X
Noel HiggasonDepartment of Biology, College of Arts and Sciences, University of Virginia, Charlottesville, Virginia, United States of America.
Leila RayyanDepartment of Biology, College of Arts and Sciences, University of Virginia, Charlottesville, Virginia, United States of America.ORCID 0000-0002-2560-2900
Carolina WählbyDepartment of Information Technology and SciLifeLab, Uppsala University, Uppsala, Sweden.ORCID 0000-0002-4139-7003
Anne E CarpenterImaging Platform, Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States of America.ORCID 0000-0003-1555-8261
Mete CivelekDepartment of Biomedical Engineering, School of Engineering and Applied Science, University of Virginia, Charlottesville, Virginia, United States of America.ORCID 0000-0002-8141-0284
Eyleen J O'RourkeDepartment of Biology, College of Arts and Sciences, University of Virginia, Charlottesville, Virginia, United States of America.ORCID 0000-0003-0503-4181
University of Virginia · USBroad Institute · USUppsala University · SE

Funding

BASIC CARDIOVASCULAR RESEARCH TRAINING GRANTT32HL007284 · NHLBI · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI Brant E Isakson, Gary K Owens · 1985 to 2026
$19.6M
Extracting rich information from biological imagesR35GM122547 · NIGMS · BROAD INSTITUTE, INC. · PI Anne E. Carpenter · 2017 to 2026
$6.2M
The role of adipocyte KLF14 in Metabolic SyndromeR01DK118287 · NIDDK · UNIVERSITY OF VIRGINIA · PI CIVELEK, METE · 2018 to 2022
$2.4M
Conserved Mechanisms of Lipid Homeostasis in C. elegansR00DK087928 · NIDDK · UNIVERSITY OF VIRGINIA · PI O'ROURKE, EYLEEN JORGELINA · 2013 to 2015
$730k
Conserved Mechanisms of Lipid Homeostasis in C. elegansK99DK087928 · NIDDK · MASSACHUSETTS GENERAL HOSPITAL · PI O'ROURKE, EYLEEN JORGELINA · 2010 to 2011
$180k
NHLBI NIH HHS T32 HL007284NIDDK NIH HHS K99 DK087928NIDDK NIH HHS R00 DK087928NIDDK NIH HHS R01 DK118287NIGMS NIH HHS R35 GM122547
6 · The paper itself

Abstract

Obesity and its associated metabolic syndrome are a leading cause of morbidity and mortality. Given the disease's heavy burden on patients and the healthcare system, there has been increased interest in identifying pharmacological targets for the treatment and prevention of obesity. Towards this end, genome-wide association studies (GWAS) have identified hundreds of human genetic variants associated with obesity. The next challenge is to experimentally define which of these variants are causally linked to obesity, and could therefore become targets for the treatment or prevention of obesity. Here we employ high-throughput in vivo RNAi screening to test for causality 293 C. elegans orthologs of human obesity-candidate genes reported in GWAS. We RNAi screened these 293 genes in C. elegans subject to two different feeding regimens: (1) regular diet, and (2) high-fructose diet, which we developed and present here as an invertebrate model of diet-induced obesity (DIO). We report 14 genes that promote obesity and 3 genes that prevent DIO when silenced in C. elegans. Further, we show that knock-down of the 3 DIO genes not only prevents excessive fat accumulation in primary and ectopic fat depots but also improves the health and extends the lifespan of C. elegans overconsuming fructose. Importantly, the direction of the association between expression variants in these loci and obesity in mice and humans matches the phenotypic outcome of the loss-of-function of the C. elegans ortholog genes, supporting the notion that some of these genes would be causally linked to obesity across phylogeny. Therefore, in addition to defining causality for several genes so far merely correlated with obesity, this study demonstrates the value of model systems compatible with in vivo high-throughput genetic screening to causally link GWAS gene candidates to human diseases.

Indexed as

Genetic Predisposition to DiseaseAnimalsCaenorhabditis elegansDietary CarbohydratesFructoseGene ExpressionHomeostasisHumansMeta-Analysis as TopicObesityPhenotypeDietary CarbohydratesFructose

Identifiers

PMID34492009
PMCPMC8462697
OpenAlexW3196741709

What OpenQuestion holds

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Read underepoch 390

Registered trials

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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.