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c-src プロトオンコゲンの標的化された破壊は,マウスの骨粗鬆症を引き起こす
P Soriano1, C Montgomery, R Geske
1Howard Hughes Medical Institute, Baylor College of Medicine, Houston, Texas 77030.
Cell
|February 22, 1991
まとめ
c-srcプロトオンコゲンは,正常な骨の再構築と骨格細胞の機能に不可欠です. c-srcが欠けているマウスは,骨形成の障害と骨粗鬆症を呈し,骨格の発達における重要な役割を果たしていることを示しています.
科学分野:
- 分子生物学は分子生物学である.
- 遺伝学 遺伝学とは
- 発達生物学 発達生物学について
背景:
- c-src プロトオンコゲンは,様々な細胞プロセスに関与する非受容体チロシンキナーゼです.
- その正確な生理学的役割,特に正常な発達と組織ホメオスタシスにおける役割は,まだ完全に理解されていません.
研究 の 目的:
- c-srcプロト腫瘍遺伝子の正常な生理学的機能を明らかにする.
- マウスの発達と生理学におけるc-src遺伝子のヌル変異の影響を調査する.
主な方法:
- 胚性幹細胞における同質再結合を用いたc-srcゼロ変異マウスの生成.
- ホモジゴス型変異性マウスの分析は,組織学的および血液学的検査を通じて行われました.
- ミュータントマウスにおける骨の再構築と骨格細胞機能の評価.
主要な成果:
- ホモジゴス型c-src変異マウスは,骨の改造機能が低下し,骨粗鬆症を発症する.
- オステオクラストの機能は,c-srcが存在しない場合に著しく低下します.
- 脳や血小板に検出可能な異常は観察されなかったが,これらの組織でc-srcの発現が高いにもかかわらず.
結論:
- c-src プロトオンコゲンは,一般的な細胞生存に不可欠ではないが,おそらく関連するチロシンキナーゼとの機能的な冗長性によるものである.
- c-srcは,骨の形成と骨格細胞媒介による骨の改造において重要かつ不可欠な役割を果たします.
- c-srcを標的とした治療は,骨関連の疾患の治療の可能性を提示する可能性がある.
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