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Sex and death.

Cheng Shi1, Coleen T Murphy1

  • 1Lewis-Sigler Institute for Integrative Genomics and Department of Molecular Biology, Princeton University, Princeton, NJ, United States.

Current Topics in Developmental Biology
|May 16, 2021
PubMed
Summary
This summary is machine-generated.

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Mating significantly shortens lifespan in C. elegans, causing shrinking and fat loss. Key mechanisms involve germline activation, seminal fluid, and pheromones, regulated by genetic pathways like IIS and TOR signaling.

Area of Science:

  • Reproductive Biology
  • Genetics
  • Aging Research

Background:

  • Sexual interactions often reduce health and lifespan across species.
  • The nematode C. elegans is a valuable model for studying mating's impact on longevity.

Purpose of the Study:

  • To review recent discoveries on mating-induced death in C. elegans.
  • To elucidate the mechanisms, genetic pathways, and evolutionary implications of mating-induced longevity reduction.

Main Methods:

  • Phenotypic analysis of mated C. elegans (shrinking, fat/glycogen loss).
  • Investigation of molecular mechanisms: germline activation, seminal fluid, pheromones.
  • Review of genetic pathways: DAF-9/DAF-12, Insulin/IGF-1 signaling (IIS), TOR signaling.
Keywords:
GermlineInsulin/IGF-1 signalingMale pheromonesMating-induced deathSeminal fluidSexual antagonismSteroid signalingTOR signaling

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Main Results:

  • Mating induces phenotypes like shrinking and metabolic loss.
  • Three primary mechanisms contribute to mating-induced death.
  • Genetic pathways including IIS and TOR signaling regulate this process.

Conclusions:

  • Mating-induced death has evolutionary fitness benefits.
  • Understanding C. elegans mating provides insights into sexual antagonism and reproduction-longevity trade-offs.
  • Findings may inform strategies for improving human health and longevity.