Cited by 55Sperm and Testicular FunctionDevelopmental Biology and Gene RegulationGenetics, Aging, and Longevity in Model Organisms

The regulated elimination of transit-amplifying cells preserves tissue homeostasis during protein starvation in Drosophila testis

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Yang, Heiko, Yamashita, Yukiko M.·2015·Development

Abstract

How tissues adapt to varying nutrient conditions is of fundamental importance for robust tissue homeostasis throughout the life of an organism, but the underlying mechanisms are poorly understood. Here, we show that Drosophila testis responds to protein starvation by eliminating transit-amplifying spermatogonia (SG) while maintaining a reduced pool of actively proliferating germline stem cells (GSCs). During protein starvation, SG die in a manner that is mediated by the apoptosis of somatic cyst cells (CCs) that encapsulate SG and regulate their development. Strikingly, GSCs cannot be maintained during protein starvation when CC-mediated SG death is inhibited, leading to an irreversible collapse of tissue homeostasis. We propose that the regulated elimination of transit-amplifying cells is essential to preserve stem cell function and tissue homeostasis during protein starvation.

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  • A type of RCD highly reminiscent of lysosome-dependent cell death, dubbed germ cell death, appears to play a critical role in physiological elimination of a fraction of emerging male germ cells at least in D. melanogaster.

    “a type of RCD that is highly reminiscent of lysosome-dependent cell death, which has been dubbed “germ cell death”, appears to play a critical role in the physiological elimination of a fraction of emerging male germ cells (at least in D. melanogaster) [753–756].”

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Authors
Yang, H., & Yamashita, Y. M.
Affiliations
  • University of Michigan (US)
  • Howard Hughes Medical Institute (US)
Corresponding author
  • Yang, Heiko
  • Yamashita, Yukiko M.
Venue
Development
Published
2015-05-15
Volume
142
Issue
10
Pages
1756-1766
ISSN
  • 0950-1991 (ISSN-L)
  • 1477-9129
OpenAlex
W2273659593
Cited by
55
References
49
Citations by year
2026: 3 · 2025: 9 · 2024: 4 · 2023: 3 · 2022: 4 · 2021: 3 · 2020: 6 · 2019: 9 · 2018: 6 · 2017: 5 · 2016: 2 · 2015: 1
FWCI
5.32
Type
journal article
Language
en
Open access
Locations
  • Development (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Howard Hughes Medical Institute
  • National Institute on Aging (F30AG045021)
  • National Heart, Lung, and Blood Institute (R01HL115158)
  • National Institute of General Medical Sciences (T32GM007863, T32GM007315)
Topics
  • Health Sciences › Medicine › Reproductive Medicine › Sperm and Testicular Function
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
Keywords
protein starvation, testis, spermatogonia, germline stem cells, transit amplifying cells, cyst cells, apoptosis, tissue homeostasis, stem cell maintenance, nutrient sensing, Drosophila
MeSH terms
Animals, Drosophila, Male, Spermatogonia, Stem Cells, Testis, Apoptosis, Drosophila Proteins

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