alexa Inhibitory effect of genistein on osteoclast-like cell formation in mouse marrow cultures.
Genetics & Molecular Biology

Genetics & Molecular Biology

Journal of Molecular and Genetic Medicine

Author(s): Gao YH, Yamaguchi M

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Abstract The effect of genistein on osteoclast-like cell formation in mouse marrow culture in vitro was investigated. The bone marrow cells were cultured for 7 days in alpha-minimal essential medium containing a well-known bone resorbing agent [parathyroid hormone (1-34) (PTH), prostaglandin E2 (PGE2), 1,25 dihydroxyvitamin D3 (VD3), or lipopolysaccharide (LPS)] with an effective concentration. Osteoclast-like cell formation was estimated by staining for tartrate-resistant acid phosphatase (TRACP), a marker enzyme of osteoclasts. The presence of PTH (10(-8) M), PGE2 (10(-6) M), VD3 (10(-8) M), or LPS (1 microg/mL) induced a remarkable increase in osteoclast-like multinucleated cells. These increases were inhibited significantly in the presence of genistein (10(-7) to 10(-5) M). The inhibitory effect of genistein (10(-5) M) was equal to that of 17 beta-estradiol (10(-8) M), calcitonin (10(-9) M), or zinc sulfate (10(-5) M). Genistein (10(-5) M) significantly inhibited dibutyryl cyclic adenosine monophosphate (10(-5) M)-induced osteoclast-like cell formation. However, genistein (10(-5) M) did not inhibit phorbol 12-myristate 13-acetate-induced osteoclast-like cell formation. The present study demonstrated that genistein has a potent inhibitory effect on osteoclast-like cell formation in mouse marrow culture. The inhibitory action of genistein may involve in cyclic AMP signaling.
This article was published in Biochem Pharmacol and referenced in Journal of Molecular and Genetic Medicine

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