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PTK7在细胞表面扩散的时空组织促进瘤的入侵和迁移

Yaohua Li¹, Tao Pan², Yu Wang³

¹Institute of Molecular Medicine (IMM), Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P. R. China.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

|March 5, 2026

概括

伪酶PTK7的扩散动态与癌症转移相关. 更快的PTK7运动增强了WNT/PCP通路信号,促进了瘤的入侵和进展.

科学领域:

细胞动力学和信号传递
癌症生物学和转移.
分子相互作用的生物物理学

背景情况:

蛋白激酶对细胞功能至关重要,但伪激酶缺乏催化活性,使用非催化机制进行信号传递.
伪基因酶的失调与包括癌症在内的各种人类疾病有关.
空间组织和伪基因酶在细胞信号传递和疾病中的作用仍然在很大程度上未被探索.

研究的目的:

在活细胞中研究伪激酶PTK7的时空动态.
确定PTK7空间组织和扩散动力学在癌症进展中的功能意义.
阐明伪基因酶使用的非催化信号机制.

主要方法:

基于aptamer的单分子追踪在活细胞中观察PTK7扩散模式.
在癌细胞系中具有转移潜力的PTK7扩散系数的定量相关性分析.
功能验证使用抗体介导的PTK7固定化和上皮层-半机体转换 (EMT) 诱导.
评估PTK7复合体形成与ROR2和WNT/PCP通路激活.

主要成果:

PTK7表现出异质的扩散模式:受限,布朗和定向运动.
PTK7扩散系数与胰腺癌,结直肠癌和乳腺癌细胞系的转移潜力有定量相关性.
PTK7固定抑制了入侵;EMT诱导加速了扩散,促进了转移.
更快的PTK7移动性增强了与ROR2的随机碰撞,促进了WNT/PCP通路的激活.
患者衍生细胞中的加速PTK7动态与侵入性和转移性表型相关.

结论:

伪激酶空间动态,特别是PTK7扩散动态,作为瘤进展的生物物理调节器.
这项研究揭示了一个非催化信号范式,其中受体扩散通过随机增强编码细胞行为.
PTK7扩散动力学具有临床意义,通过WNT/PCP通路调节影响癌细胞入侵和转移.

关键词:

动态扩散的扩散.这些是伪基因酶.单个分子追踪.瘤的入侵和迁移.

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