Local OPG gene transfer to periodontal tissue inhibits orthodontic tooth movement

H. Kanzaki, M. Chiba, I. Takahashi, N. Haruyama, M. Nishimura, H. Mitani

研究成果: ジャーナルへの寄稿記事

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Previously, we discovered that RANKL expression is induced in compressed periodontal ligament cells, and that this promotes osteoclastogenesis on the compression side in orthodontic tooth movement. We hypothesized that local OPG gene transfer to the periodontium would neutralize the RANKL activity induced by mechanical compressive force, thereby inhibiting osteoclastogenesis and diminishing tooth movement. The upper first molars of six-week-old male Wistar rats were moved palatally by means of a fixed-orthodontic wire. A mouse OPG expression plasmid [pcDNA3.1(+)-mOPG] was constructed, and the production of functional OPG protein was confirmed in vitro. The inactivated HVJ envelope vector containing pcDNA3.1(+)-mOPG or PBS was injected periodically into the palatal periodontal tissue of upper first molars. When this local OPG gene transfer was performed, OPG production was induced, and osteoclastogenesis was inhibited. Local OPG gene transfer significantly diminished tooth movement. In this study, we report that OPG gene transfer to periodontal tissue inhibited RANKL-mediated osteoclastogenesis and inhibited experimental tooth movement.

元の言語英語
ページ(範囲)920-925
ページ数6
ジャーナルJournal of Dental Research
83
発行部数12
DOI
出版物ステータス出版済み - 12 2004
外部発表Yes

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All Science Journal Classification (ASJC) codes

  • Dentistry(all)

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