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泛素化在人表皮生长因子受体降解中的研究进展

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摘要 人类表皮生长因子受体(EGFR)是原癌基因c-erBb-1的表达产物,其编码的蛋白质属Ⅰ型跨膜酪氨酸激酶生长因子受体,由3部分组成:胞外区、跨膜区和膜内区,包括EGFR、C-erbB-2、C-erbB-3、C-erbB-4 4个成员,EGFR与配体结合而激活后,胞内区的酪氨酸残基自磷酸化转为活性形式,诱发下游信号传导途径(如PLC-γ、Ras、PI3K、JAK2),引起级联反应,促进肿瘤的发生、增殖、转移、放化疗抵抗。泛素化介导的EG-FR降解是下调其活化的一个常见机制。
出处 《重庆医学》 CAS CSCD 北大核心 2012年第4期395-398,共4页 Chongqing medicine
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