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Proceedings of the National Academy of Sciences of the United States of America

Oogenesis requires germ cell-specific transcriptional regulators Sohlh1 and Lhx8.


PMID 16690745

Abstract

Mammalian oogenesis requires oocyte-specific transcriptional regulators. The full complement of oocyte-specific transcription factors is unknown. Here, we describe the finding that Sohlh1, a spermatogenesis and oogenesis basic helix-loop-helix transcription factor in females, is preferentially expressed in oocytes and required for oogenesis. Sohlh1 disruption perturbs follicular formation in part by causing down-regulation of two genes that are known to disrupt folliculogenesis: newborn ovary homeobox gene (Nobox) and factor in the germ-line alpha (Figla). In addition, we show that Lhx8 is downstream of Sohlh1 and critical in fertility. Thus, Sohlh1 and Lhx8 are two germ cell-specific, critical regulators of oogenesis.

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