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基于分子对接方法的肺癌分子靶标耐药机制研究 被引量:1

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摘要 目的探讨吉非替尼为代表的表皮生长因子受体酪氨酸激酶抑制剂(epidermal growth factor receptor tyrosine kinases inhibitor,EGFR-TKI)在治疗非小细胞肺癌中起到的作用。方法虽然部分患者治疗后产生获得性耐药,其耐药机制尚未完全阐明。但本文将研究第790位密码子突变导致吉非替尼耐药的原理。利用Arguslab软件,模拟并分析吉非替尼与EGFR野生型和变异型蛋白的结合情况,试图对EGFR-TKI的耐药机制作出解释。结果野生基因2GS6与吉非替尼结合所需能量为-8.07 kcal/mol,低于2GS6与ATP结合所需能量-7.78 kcal/mol,2GS6基因突变为3IKA后,受体蛋白与吉非替尼的结合能力降低至-6.96 kcal/mol,与ATP的结合能力提升至-8.41 kcal/mol。结论 2GS6更易与吉非替尼结合,患者对吉非替尼药物敏感,具有临床意义。
出处 《中外医疗》 2014年第28期90-91,共2页 China & Foreign Medical Treatment
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