A novel function of bone morphogenetic protein-15 in the pituitary: Selective synthesis and secretion of FSH by gonadotropes

Fumio Otsuka, Shunichi Shimasaki

Research output: Contribution to journalArticle

113 Citations (Scopus)

Abstract

Bone morphogenetic protein-15 (BMP-15) has been known to be an oocyte-specific factor and regulate granulosa cell functions. Here, we report that BMP-15 is also expressed in the well established gonadotrope cell line, LβT2 and mouse pituitary tissue. Interestingly, BMP-15 stimulates FSHβ subunit transcription in LβT2 cells without affecting LHβ and GnRH receptor transcription. These findings, therefore, suggest a possible autocrine control mechanism selective for FSHβ synthesis by BMP-15. Moreover, BMP-15 exerts a potent and selective stimulation of FSH, but not LH, secretion by primary pituitary cells. Taken together, we hypothesize that BMP-15 could play a physiological role in the monotropic rise of FSH secretion by the pituitary during the estrous and menstrual cycle. These findings, together with the previous evidence of a negative regulation of FSH receptor expression by BMP-15 in the ovary, may constitute a major role in female fertility.

Original languageEnglish
Pages (from-to)4938-4941
Number of pages4
JournalEndocrinology
Volume143
Issue number12
DOIs
Publication statusPublished - Dec 1 2002
Externally publishedYes

ASJC Scopus subject areas

  • Endocrinology

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