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S100A12蛋白在心血管病中的研究进展

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摘要 目前已发现S100蛋白家族有21个成员,它们可通过对钙离子的调节及与靶蛋白的相互作用发挥多种生物学功能[1]。众所周知,Ca2+有很重要的生理功能,它不仅可以作为信号转导的第二信使,也是许多酶的辅酶,改变Ca2+浓度可激发多种生理反应,而钙结合蛋白是Ca2+执行生理功能过程中的非常关键的载体。S100蛋白正是通过与钙离子结合后导致自身构象改变,暴露出与靶蛋白的结合位点,进而通过与相应的靶蛋白结合发挥生物学效应。S100A12是1995年被发现的S100蛋白家族的新成员,近10年来的研究表明,除了钙,锌、铜在S100A12的蛋白构象改变中也起了举足轻重的作用,如参与包括细胞增殖、分化、炎症反应、信号转导等重要细胞活动。临床检测发现,该蛋白不仅在肿瘤、神经系统、表皮疾病患者血清中异常升高,而且在很多心血管疾病患者也表现明显异常。目前研究成果表明,S100A12可能对心血管疾病的诊断及鉴别诊断、治疗及预后的判断有重要价值。
出处 《心血管外科杂志(电子版)》 2013年第3期139-142,共4页 Journal of Cardiovascular Surgery(Electronic Edition)
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