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Dev Biol. 2013 Jan 15;373(2):310-21. doi: 10.1016/j.ydbio.2012.11.004. Epub 2012 Nov 15.

The transcriptional regulator lola is required for stem cell maintenance and germ cell differentiation in the Drosophila testis.

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Department of Developmental Biology, Stanford University School of Medicine, 279 Campus Drive, Beckman Center B300, Stanford, CA 94305-5329, USA.


Stem cell behavior is regulated by extrinsic signals from specialized microenvironments, or niches, and intrinsic factors required for execution of context-appropriate responses to niche signals. Here we show that function of the transcriptional regulator longitudinals lacking (lola) is required cell autonomously for germline stem cell and somatic cyst stem cell maintenance in the Drosophila testis. In addition, lola is also required for proper execution of key developmental transitions during male germ cell differentiation, including the switch from transit amplifying progenitor to spermatocyte growth and differentiation, as well as meiotic cell cycle progression and spermiogenesis. Different lola isoforms, each having unique C-termini and zinc finger domains, may control different aspects of proliferation and differentiation in the male germline and somatic cyst stem cell lineages.

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