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Biochem Biophys Res Commun. 2012 May 25;422(1):54-8. doi: 10.1016/j.bbrc.2012.04.104. Epub 2012 Apr 27.

Blocking FSH action attenuates osteoclastogenesis.

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  • 1School of Stomatology, Wuhan University, Wuhan, China.


A direct effect of FSH on bone turnover via stimulation of osteoclast formation has been reported. Here we show that monoclonal or polyclonal antibodies to FSH inhibit osteoclast formation induced by FSH to an extent similar to that noted in FSH receptor (FSHR) knockout cells. Furthermore, we document the amplification of FSHR cDNA from well-characterized human CD14+ osteoclast precursors and osteoclasts, and the direct sequencing of the PCR products to definitively establish the expression of FSHRs. At these sites, the FSHR was expressed predominantly as an isoform that omits exon 9, a linker between the FSH-binding region and a long, invariant signaling domain of the receptor. These data provide compelling evidence for expression of a FSH receptor isoform in osteoclasts and their precursors.

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