Epigenetic regulation of stem cell maintenance in the Drosophila testis via the nucleosome-remodeling factor NURF.
Epigenetic regulation of stem cell maintenance in the Drosophila testis via the nucleosome-remodeling factor NURF.
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DOI:
10.1016/j.stem.2010.04.018
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发表时间:
2010-06-04
期刊:
影响因子:
23.9
通讯作者:
Matunis EL
中科院分区:
文献类型:
--
作者:
Cherry CM;Matunis EL
Regulation of stem cells depends on both tissue-specific transcriptional regulators and changes in chromatin organization, yet the coordination of these events in endogenous niches is poorly understood. In the Drosophila testis, local JAK-STAT signaling maintains germline and somatic stem cells (GSCs and cyst progenitor cells, or CPCs) in a single niche. Here we show that epigenetic regulation via the nucleosome remodeling factor (NURF) complex ensures GSC and CPC maintenance by positively regulating JAK-STAT signaling, thereby preventing premature differentiation. Conversely, NURF is not required in early differentiating daughter cells of either lineage. Since three additional ATP-dependent chromatin remodelers (ACF, CHRAC, and dMi-2/NuRD) are dispensable for stem cell maintenance in the testis, epigenetic regulation of stem cells within this niche may rely primarily on NURF. Thus, local signals cooperate with specific chromatin remodeling complexes in intact niches to coordinately regulate a common set of target genes to prevent premature stem cell differentiation.
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