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TGF-β及其信号分子SMAD3在伤口愈合过程中的作用 被引量:9

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摘要 转化生长因子 β (TGF β)是一类分泌型多肽信号分子 ,在生物体发育及组织修复过程中发挥重要的调节作用。SMAD家族是一类新发现的TGF β信号的细胞质内介导者 ,它们可将TGF β信号直接从细胞膜转入细胞核内 ,并激活靶基因的转录。其中SMAD3和SMAD2作为受体激活的SMADs介导TGF βs和激活素 (activins)的细胞内信号。Smad 3基因敲除小鼠 (Smad 3ex8/ex8)可以存活至成年 ,其伤口愈合过程较正常对照鼠明显加快 ,并具有重上皮化加速和局部炎症反应减弱等特点。SMAD3在组织修复过程中的特殊作用途径可能成为治疗慢性难愈合伤口的靶点。
出处 《国外医学(生理病理科学与临床分册)》 2002年第1期67-69,共3页 Foreign Medical Sciences(Pathophysiology and Clinical Medicine)
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