The identification of an osteoclastogenesis inhibitor through the inhibition of glyoxalase I

Makoto Kawatani, Hideo Okumura, Kaori Honda, Naoki Kanoh, Makoto Muroi, Naoshi Dohmae, Masamichi Takami, Mitsuhiro Kitagawa, Yushi Futamura, Masaya Imoto, Hiroyuki Osada*

*この研究の対応する著者

研究成果: Article査読

110 被引用数 (Scopus)

抄録

Osteoclasts, bone-resorptive multinucleated cells derived from hematopoietic stem cells, are associated with many bone-related diseases, such as osteoporosis. Osteoclast-targeting small-molecule inhibitors are valuable tools for studying osteoclast biology and for developing antiresorptive agents. Here, we have discovered that methyl-gerfelin (M-GFN), the methyl ester of the natural product gerfelin, suppresses osteoclastogenesis. By using M-GFN-immobilized beads, glyoxalase I (GLO1) was identified as an M-GFN-binding protein. GLO1 knockdown and treatment with an established GLO1 inhibitor in osteoclast progenitor cells interfered with osteoclast generation, suggesting that GLO1 activity is required for osteoclastogenesis. In cells, GLO1 plays a critical role in the detoxification of 2-oxoaldehydes, such as methylglyoxal. M-GFN inhibited the enzymatic activity of GLO1 in vitro and in situ. Furthermore, the cocrystal structure of the GLO1/M-GFN complex revealed the binding mode of M-GFN at the active site of GLO1. These results suggest that M-GFN targets GLO1, resulting in the inhibition of osteoclastogenesis.

本文言語English
ページ(範囲)11691-11696
ページ数6
ジャーナルProceedings of the National Academy of Sciences of the United States of America
105
33
DOI
出版ステータスPublished - 2008 8月 19
外部発表はい

ASJC Scopus subject areas

  • 一般

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