ArticleAging cell2022
Fusion and expansion of vitellogenin vesicles during Caenorhabditis elegans intestinal senescence.
Article in Aging cell, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 15 citations in OpenAlex.
- Soma-to-germline miRNA inheritance through yolk promotes stress resilience in progeny.Nature structural & molecular biology · 2026Article
- Functionally diversified Caenorhabditis elegans BiP orthologs control body growth, reproduction, stress resistance, aging, and autophagy.Nature communications · 2025Article
- RME-1-associated recycling endosomes participate in vitellogenin secretion inLife metabolism · 2025Article
- Machine learning predicts lifespan and suggests underlying causes of death in aging C. elegans.Communications biology · 2025Article
- Hyperactive 20Science advances · 2025Article
- SRS microscopy identifies inhibition of vitellogenesis as a mediator of lifespan extension by caloric restriction inbioRxiv : the preprint server for biology · 2025Article
- C. elegans ageing is accelerated by a self-destructive reproductive programme.Nature communications · 2023Article
- Identifying lipid particle sub-types in liveFrontiers in chemistry · 2023Article
- Fusion and expansion of vitellogenin vesicles during Caenorhabditis elegans intestinal senescence.Aging cell · 2022Article
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Authors and funding
6 authors at 3 institutions in 1 country.
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Abstract
Some of the most conspicuous aging phenotypes of C. elegans are related to post-reproductive production of vitellogenins (Vtg), which form yolk protein (YP) complexes after processing and lipid loading. Vtg/YP levels show huge increases with age, and inhibition of this extends lifespan, but how subcellular and organism-wide distribution of these proteins changes with age has not been systematically explored. Here, this has been done to understand how vitellogenesis promotes aging. The age-associated changes of intestinal vitellogenin vesicles (VVs), pseudocoelomic yolk patches (PYPs), and gonadal yolk organelles (YOs) have been characterized by immuno-electron microscopy. We find that from reproductive adult day 2 (AD 2) to post-reproductive AD 6 and AD 9, intestinal VVs expand from 0.2 to 3-4 μm in diameter or by >3000 times in volume, PYPs increase by >3 times in YP concentration and volume, while YOs in oocytes shrink slightly from 0.5 to 0.4 μm in diameter or by 49% in volume. In AD 6 and AD 9 worms, mislocalized YOs found in the hypodermis, uterine cells, and the somatic gonadal sheath can reach a size of 10 μm across in the former two tissues. This remarkable size increase of VVs and that of mislocalized YOs in post-reproductive worms are accompanied by extensive fusion between these Vtg/YP-containing vesicular structures in somatic cells. In contrast, no fusion is seen between YOs in oocytes. We propose that in addition to the continued production of Vtg, excessive fusion between VVs and mislocalized YOs in the soma worsen the aging pathologies seen in C. elegans.
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