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从单分子的角度使用原子力显微镜揭示了Tilvestamab在治疗癌症中的机制

Junye Zhang¹, Hongda Wang²

¹State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Changchun, Jilin, 130022, China; School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China.

Analytica chimica acta

|November 24, 2025

概括

针对AXL的抗体Tilvestamab通过形成稳定的AXL复合体来增强癌细胞的刚性和减少迁移. 这种机械药理学作用为治疗侵袭性癌症提供了新的策略.

科学领域:

生物物理学的生物物理.
分子瘤学分子瘤学
机械生物学机械生物学

背景情况:

AXL受体氨酸激酶信号驱动癌症的攻击性和治疗耐药性.
抑制AXL是一种有前途的抗癌策略,蒂尔韦斯塔马布阻断了GAS6-AXL结合.
提尔维斯塔马布的作用的生物力学基础需要阐明.

研究的目的:

描述蒂尔韦斯塔马布与AXL相互作用的单分子生物力学.
为了比较蒂尔韦斯塔马布的结合动力学和与其天然配体GAS6.6的亲和力.
调查蒂尔韦斯塔马布对癌细胞机制和迁移的功能影响.

主要方法:

原子力显微镜 (AFM) 用于单分子力光谱.
纳米沉积测量以评估细胞硬度.
在活癌细胞上对AXL结合的蒂尔韦斯塔马布和GAS6的比较.

主要成果:

提尔韦斯塔马布表现出类似的结合亲和力,但与GAS6.6相比,与AXL的结合频率更高.
蒂尔韦斯塔马布形成了更稳定的AXL复合体,解离速率较慢.
提尔韦斯塔马布治疗显著增加了多个细胞系的癌细胞硬性,减少了迁移.

结论:

蒂尔韦斯塔马布的抗癌疗效与卓越的动力稳定性和细胞生物力学直接调节有关.
通过增加膜刚性,蒂尔韦斯塔马布抑制了癌细胞的迁移和增殖.
这些发现支持提尔韦斯塔马布作为AXL依赖癌症的机械药理学剂.

关键词:

原子力显微镜的原子力显微镜.纳米沉积方式的纳米沉积单分子力光谱学单分子力光谱学在Tilvestamabb上使用.

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