ArticleCell death and differentiation2021
Maternally inherited intron coordinates primordial germ cell homeostasis during Drosophila embryogenesis.
Article in Cell death and differentiation, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed, 9 citations in OpenAlex.
- Article
- Nutrient-dependent regulation of a stable intron modulates germline mitochondrial quality control.Nature communications · 2024Article
- Distinct biogenesis pathways may have led to functional divergence of the human and Drosophila Arglu1 sisRNA.EMBO reports · 2023Article
- Maternal starvation primes progeny response to nutritional stress.PLoS genetics · 2021Article
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2 authors at 1 institution in 1 country.
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Abstract
Primordial germ cells (PGCs) give rise to the germline stem cells (GSCs) in the adult Drosophila gonads. Both PGCs and GSCs need to be tightly regulated to safeguard the survival of the entire species. During larval development, a non-cell autonomous homeostatic mechanism is in place to maintain PGC number in the gonads. Whether such germline homeostasis occurs during early embryogenesis before PGCs reach the gonads remains unclear. We have previously shown that the maternally deposited sisRNA sisR-2 can influence GSC number in the female progeny. Here we uncover the presence of a homeostatic mechanism regulating PGCs during embryogenesis. sisR-2 represses PGC number by promoting PGC death. Surprisingly, increasing maternal sisR-2 leads to an increase in PGC death, but no drop in PGC number was observed. This is due to ectopic division of PGCs via the de-repression of Cyclin B, which is governed by a genetic pathway involving sisR-2, bantam and brat. We propose a cell autonomous model whereby germline homeostasis is achieved by preserving PGC number during embryogenesis.
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