通过自胞体降解剂向EGFR降解
ZhongFeng Zhu1, Jiaying Li1, Shujun Shen1
1State Key Laboratory of Bioactive Molecules and Druggability Assessment, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development, Ministry of Education (MoE) of the People's Republic of China, Guangzhou City Key Laboratory of Precision Chemical Drug Development, College of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou, 510632, China.
新的自细胞结合化合物 (ATTEC) 在非小细胞肺癌 (NSCLC) 细胞中有效降解表皮生长因子受体 (EGFR). 这种方法提供了一种新的策略,以克服NSCLC治疗中的耐药性.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 药物发现 药物发现 药物发现
背景情况:
- 表皮生长因子受体 (EGFR) 氨酸激酶抑制剂是非小细胞肺癌 (NSCLC) 的标准治疗方法.
- 由新突变驱动的EGFR抑制剂的获得性耐药性限制了它们的临床疗效.
- 针对蛋白质溶解的嵌合体 (PROTACs) 显示出降解耐药EGFR的前景,但需要新的降解剂.
研究的目的:
- 设计和合成用于EGFR降解的新型自细胞结合化合物 (ATTEC).
- 评估EGFR-ATTECs在降解EGFR和抑制NSCLC细胞生长方面的有效性.
- 探索EGFR-ATTECs在克服耐药性的治疗潜力.
主要方法:
- 一系列EGFR-ATTEC的设计和合成.
- 在体外生物评估,包括EGFR降解试验 (DC50,Dmax) 和细胞活力试验.
- 机制研究以阐明降解途径 (溶酶体).
- 在体内研究以评估抗瘤活性和降解效率.
主要成果:
- 合成的EGFR-ATTEC证明了在NSCLC细胞中降解EGFR的能力.
- 化合物12c在HCC827细胞中显示出强烈的EGFR降解 (DC50 = 0.98μM,Dmax = 81%).
- 降解主要通过 lysosomal 途径发生.
- 化合物12c在体内表现出有希望的抑制活性和降解效率.
结论:
- EGFR-ATTECs代表了一个新的EGFR降解剂类别,具有潜在的临床应用.
- 该策略提供了一种新的治疗方法,用于对抗EGFR突变NSCLC的耐药性.
- 进一步开发EGFR-ATTEC可以提供一个可扩展的工具来准耐药突变.
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