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DFNB12发病机制的研究进展 被引量:1

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摘要 毛细胞的顶连接(tip link)由两个耳聋相关钙黏蛋白——钙黏蛋白-23(cadhefin23,CDH23)和原钙黏蛋白.15(protocadherin15,PCDHl5)的同源二聚体经反式相互作用所形成,分别构成顶连接的上部和下部,机械性电传导(mechanoelectrical transduction,MET)通道位于顶连接的下端。顶连接调节耳蜗Corti器毛细胞MET通道的开放,将机械性刺激转换为电化学信号。人类CDH23基因的错义突变可导致非综合征性常染色体隐性遗传性耳聋DFNBl2,其确切的发病机制尚不完全清楚。小鼠模型依然是研究DFNBl2发病机制的最佳工具。近期研究表明,DFNBl2可能是由于CDH23蛋白和PCDHl5蛋白的不稳定作用,导致毛细胞顶连接缺失,从而引起的一种新的耳聋类型。
出处 《中华耳鼻咽喉头颈外科杂志》 CAS CSCD 北大核心 2013年第12期1046-1050,共5页 Chinese Journal of Otorhinolaryngology Head and Neck Surgery
基金 国家自然科学基金(81271092) 滨州医学院科研启动基金(BY2012KYQD01) “泰山学者”科研资助基金(tshw20110515)
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