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分子构造的干通过增强它们在溶解体中的积累来降解膜受体

Dongchen Zhang¹, Xinyi Zhou¹, Jiamin Cai¹

¹Molecular Science and Biomedicine Laboratory (MBL), State Key Laboratory of Chemo and Biosensing, College of Chemistry and Chemical Engineering, College of Biology, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, People's Republic of China.

ACS central science

|December 31, 2025

概括

研究人员开发了分子构建的基于联体的 lysosome-targeting 嵌合体 (MBL-LYTACs) 以有效降解膜受体. 这种多功能平台增强了受体内部化和溶酶体积累,在癌症治疗中显示出前景.

科学领域:

生物化学生物化学
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:

针对性降解膜受体对于治疗干预至关重要,特别是在癌症中.
现有的方法通常依赖于特定的细胞表面受体进行 lysosome shuttling,这限制了它们的广泛适用性.

研究的目的:

引入分子构建的基于联体的 lysosome-targeting 嵌合体 (MBL-LYTACs) 作为增强膜受体降解的新平台.
证明MBL-LYTACs在各种膜受体和癌症模型中的多功能性和有效性.

主要方法:

通过将向配体与溶酶体局部化部分 (形态素,二甲基乙胺,mPEGs) 结合,设计MBL-LYTACs.
功能查和机制研究,以评估受体内化和溶酶体积累.
在瘤异种移植模型中的体内验证,准编程死亡连接体1 (PD-L1) 和表皮生长因子受体 (EGFR).

主要成果:

MBL-LYTACs显著增强了目标受体 (叶酸受体α,PD-L1,EGFR,PTK7) 的内部化和溶酶体积累.
获得了成功的受体降解,独立于细胞表面 lysosome-shuttling受体.
在临床前癌症模型中证明了MBL-LYTACs的治疗疗效.

结论:

MBL-LYTACs为针对性膜受体降解提供了强大的和可适应的框架.
这种方法扩大了受体降解策略在治疗开发中的适用性.
MBL-LYTACs是促进癌症治疗的有希望的策略.

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