Evidence map›Paper›PMID 34611154›Full record

ArticleNature communications2021

C. elegans feed yolk to their young in a form of primitive lactation.

Carina C Kern, StJohn Townsend, Antoine Salzmann, Nigel B Rendell, Graham W Taylor, Ruxandra M Comisel, Lazaros C Foukas, Jürg Bähler, David Gems

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
3.8field-weighted citation impact, top 4% 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

35 citing papers in PubMed, 54 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. A hierarchy of causes of death in senescentbioRxiv : the preprint server for biology · 2025
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  9. Condition-dependent effects of knockdown of autophagy onbioRxiv : the preprint server for biology · 2025
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  10. The regulatory architecture of gene expression variation inbioRxiv : the preprint server for biology · 2025
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  11. Article
  12. Article
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  14. microPublication biology · 2025
    Article
  15. Article
  16. Article
  17. Single-tissue proteomics inProceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  18. Developmental and conditional regulation of DAF-2/INSR ubiquitination inbioRxiv : the preprint server for biology · 2024
    Article
  19. ADR-2 regulates fertility and oocyte fate inbioRxiv : the preprint server for biology · 2024
    Article
  20. Review
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.

Carina C KernInstitute of Healthy Ageing, and Research Department of Genetics, Evolution and Environment, University College London, London, WC1E 6BT, UK.ORCID 0000-0001-5639-4529
StJohn TownsendInstitute of Healthy Ageing, and Research Department of Genetics, Evolution and Environment, University College London, London, WC1E 6BT, UK.
Antoine SalzmannInstitute of Healthy Ageing, and Research Department of Genetics, Evolution and Environment, University College London, London, WC1E 6BT, UK.
Nigel B RendellWolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, NW3 2PF, UK.
Graham W TaylorWolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, NW3 2PF, UK.ORCID 0000-0002-9672-8463
Ruxandra M ComiselInstitute of Healthy Ageing, and Research Department of Genetics, Evolution and Environment, University College London, London, WC1E 6BT, UK.ORCID 0000-0001-7632-8430
Lazaros C FoukasInstitute of Healthy Ageing, and Research Department of Genetics, Evolution and Environment, University College London, London, WC1E 6BT, UK.ORCID 0000-0002-6551-8789
Jürg BählerInstitute of Healthy Ageing, and Research Department of Genetics, Evolution and Environment, University College London, London, WC1E 6BT, UK.ORCID 0000-0003-4036-1532
David GemsInstitute of Healthy Ageing, and Research Department of Genetics, Evolution and Environment, University College London, London, WC1E 6BT, UK. david.gems@ucl.ac.uk.
MRC Unit for Lifelong Health and Ageing · GBUniversity College London · GBThe Francis Crick Institute · GB

Funding

Enhancing and expanding the CGC Strain CollectionP40OD010440 · OD · UNIVERSITY OF MINNESOTA · PI Ann E. Rougvie · 2012 to 2026
$7.5M
NIH HHS P40 OD010440Wellcome Trust 098565/Z/12/ZWellcome Trust 215574Wellcome Trust 215574/Z/19/Z
6 · The paper itself

Abstract

The nematode Caenorhabditis elegans exhibits rapid senescence that is promoted by the insulin/IGF-1 signalling (IIS) pathway via regulated processes that are poorly understood. IIS also promotes production of yolk for egg provisioning, which in post-reproductive animals continues in an apparently futile fashion, supported by destructive repurposing of intestinal biomass that contributes to senescence. Here we show that post-reproductive mothers vent yolk which can be consumed by larvae and promotes their growth. This implies that later yolk production is not futile; instead vented yolk functions similarly to milk. Moreover, yolk venting is promoted by IIS. These findings suggest that a self-destructive, lactation-like process effects resource transfer from postreproductive C. elegans mothers to offspring, in a fashion reminiscent of semelparous organisms that reproduce in a single, suicidal burst. That this process is promoted by IIS provides insights into how and why IIS shortens lifespan in C. elegans.

Indexed as

AnimalsBiomassCaenorhabditis elegansCaenorhabditis elegans ProteinsFemaleSignal TransductionCaenorhabditis elegans Proteins

Identifiers

PMID34611154
PMCPMC8492707
OpenAlexW3203783182

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.