Evidence map›Paper›PMID 25474470›Full record

ArticlePLoS genetics2014

Germline signals deploy NHR-49 to modulate fatty-acid β-oxidation and desaturation in somatic tissues of C. elegans.

Ramesh Ratnappan, Francis R G Amrit, Shaw-Wen Chen, Hasreet Gill, Kyle Holden, Jordan Ward, Keith R Yamamoto, Carissa P Olsen, Arjumand Ghazi

Open access · goldAbstract read
In one paragraph

Article in PLoS genetics, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 96 papers.

0numbers the graph read from it
0cells of the map it votes in
96citing papers in PubMed
4.0field-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

96 citing papers in PubMed, 150 citations in OpenAlex.

  1. Loss of the fatty acid β-oxidation genebioRxiv : the preprint server for biology · 2026
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  14. Iron-deplete diet enhancesbioRxiv : the preprint server for biology · 2025
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  15. Lactate promotes longevity through redox-driven lipid remodeling inbioRxiv : the preprint server for biology · 2025
    Article
  16. Article
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  20. Article

36 more citing papers are in PubMed but not listed here.

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 1 country.

Ramesh RatnappanDepartment of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America.
Francis R G AmritDepartment of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America.
Shaw-Wen ChenDivision of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America.
Hasreet GillDepartment of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America.
Kyle HoldenDepartment of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America.
Jordan WardDepartment of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, California, United States of America.
Keith R YamamotoDepartment of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, California, United States of America.
Carissa P OlsenDivision of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America.
Arjumand GhaziDepartment of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America.
University of Pittsburgh · USFred Hutch Cancer Center · USUniversity of California, San Francisco · US

Funding

GENE REGULATION BY STEROID RECEPTOR PROTEINSR01CA020535 · NCI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI YAMAMOTO, KEITH ROBERT · 1985 to 2018
$8.9M
Defining the Impact of Lipid Synthesis and Turnover on Aging in C. elegansDP5OD009189 · OD · WORCESTER POLYTECHNIC INSTITUTE · PI OLSEN, CARISSA · 2011 to 2015
$2.2M
GENE REGULATION BY STEROID RECEPTOR PROTEINSR37CA020535 · NCI · UNIVERSITY OF CALIFORNIA SAN FRANCISCO · PI YAMAMOTO, KEITH ROBERT · 1990 to 1998
–
NCI NIH HHS CA020535NCI NIH HHS R01 CA020535NCI NIH HHS R37 CA020535NIH HHS 5 DP5 OD009189-04NIH HHS DP5 OD009189
6 · The paper itself

Abstract

In C. elegans, removal of the germline extends lifespan significantly. We demonstrate that the nuclear hormone receptor, NHR-49, enables the response to this physiological change by increasing the expression of genes involved in mitochondrial β-oxidation and fatty-acid desaturation. The coordinated augmentation of these processes is critical for germline-less animals to maintain their lipid stores and to sustain de novo fat synthesis during adulthood. Following germline ablation, NHR-49 is up-regulated in somatic cells by the conserved longevity determinants DAF-16/FOXO and TCER-1/TCERG1. Accordingly, NHR-49 overexpression in fertile animals extends their lifespan modestly. In fertile adults, nhr-49 expression is DAF-16/FOXO and TCER-1/TCERG1 independent although its depletion causes age-related lipid abnormalities. Our data provide molecular insights into how reproductive stimuli are integrated into global metabolic changes to alter the lifespan of the animal. They suggest that NHR-49 may facilitate the adaptation to loss of reproductive potential through synchronized enhancement of fatty-acid oxidation and desaturation, thus breaking down some fats ordained for reproduction and orchestrating a lipid profile conducive for somatic maintenance and longevity.

Indexed as

Caenorhabditis elegansAnimalsAnimals, Genetically ModifiedCaenorhabditis elegans ProteinsFatty AcidsFemaleForkhead Transcription FactorsGerm CellsLipid MetabolismLongevityOxidation-ReductionPeptide Elongation FactorsReceptors, Cytoplasmic and NuclearReproductionSignal TransductionCaenorhabditis elegans Proteinsdaf-16 protein, C elegansFatty AcidsForkhead Transcription FactorsNHR-49 protein, C elegansPeptide Elongation FactorsReceptors, Cytoplasmic and NuclearTCER-1 protein, C elegans

Identifiers

PMID25474470
PMCPMC4256272
OpenAlexW2139573873

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.