机械MR微粒子 (M3) 传感器揭示了动态应力负荷作为表皮-介质细胞过渡的驱动因素
Minji An1, Ri Yu1,2, Annie Lin3,4,5
1Center for NanoMedicine, Institute for Basic Science (IBS), Seoul 03722, Republic of Korea.
bioRxiv : the preprint server for biology
|December 19, 2025
概括
一个新的机械MR微粒子 (M3) 传感器在体内量化组织应激. 急性压力激增,而不是峰值压力,驱动癌细胞EMT,揭示了瘤发展的关键机制.
科学领域:
- 生物物理学的生物物理.
- 生物技术是生物技术.
- 癌症研究 癌症研究
背景情况:
- 组织力学对于生理功能至关重要.
- 在体内测量组织应激量仍然具有挑战性.
研究的目的:
- 介绍机械MR微粒子 (M3) 传感器用于体内压力测量.
- 调查机械应激在癌症发育过程中的上皮-介质细胞过渡 (EMT) 中的作用.
主要方法:
- 开发并使用了M3传感器,这是一种混合软物质/纳米粒子探测器.
- 在各种模型系统中应用M3传感器:瘤球体,Xenopus胚胎和老鼠异种移植.
- 在受控压力条件下进行了转录基因分析.
主要成果:
- M3传感器使组织应激动态的非侵入性,时空解析的映射成为可能.
- 在体内,EMT与不同的压力重塑模式有关.
- 急性压力增加,而不是累积或峰值压力,对于EMT诱导至关重要.
- 逐渐的压力会激活细胞保护性通路,而急性压力激增会触发介质细胞重编程.
结论:
- M3传感器是一种广泛适用的技术,用于将机械线索与细胞状态过渡联系起来.
- 动态压力模式,特别是急性激增,在癌细胞EMT中发挥着关键作用.
- 这些发现为机械力和细胞命运在发育和疾病中的相互作用提供了新的见解.
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