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破骨细胞分化过程中的信号传导

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摘要 破骨细胞在骨量维持中起重要作用。它的分化、成熟信号由成骨/基质细胞传递。当受到各种骨吸收刺激因子作用时,成骨/基质细胞表达保骨素配体,与破骨前体细胞的RANK分子直接结合,再经过细胞内的TRAF和/JNK传导信号,引起破骨细胞分化、成熟,从而发挥效应。成骨/基质细胞还通过分泌保骨素,作为伪受体与RANK竞争,抑制破骨细胞分化信号的传导,从而精确调节骨量。保骨素配体与保骨素的比例是决定破骨细胞分化、成熟的关键。
作者 张晔
出处 《国外医学(老年医学分册)》 2001年第2期86-90,共5页 Foreign Medical Sciences(Geriatrics)
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参考文献20

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