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Updated: Jan 10, 2026

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氨基酸 - 介质细胞过渡和癌症侵袭可塑性的蛋白质控制
bioRxiv : the preprint server for biology
|November 24, 2025
概括
癌细胞使用矩阵金属蛋白酶-14 (MMP14) 进行入侵,无论它们的运动风格如何. 向MMP14通过降解细胞外基质并保持瘤进展至关重要的核完整性来阻止癌细胞的入侵.
科学领域:
- 癌症生物学 癌症生物学
- 细胞力学 细胞力学
- 分子瘤学分子瘤学
背景情况:
- 恶性细胞表现出入侵可塑性,在集体,介质细胞和蜂类表型之间切换以入侵组织.
- 据认为,阿米虫的入侵是独立于细胞外基质 (ECM) 蛋白解的,依赖于机械力量.
- 介质细胞和集体入侵与由蛋白酶降解的ECM有关.
研究的目的:
- 为了研究控制癌细胞中介质与阿米虫入侵的机制.
- 为了识别不同入侵程序中涉及的特定蛋白酶.
- 阐明MMP14在癌细胞入侵和组织重塑中的作用.
主要方法:
- 利用癌症球状3D矩阵模型和单细胞RNA测序.
- 使用CRISPR/Cas9基因编辑来准MMP14.
- 通过空间转录学和免疫组织学分析了人体组织扩张和侵入性人类乳腺癌组织.
主要成果:
- 无论是集体/介质酶和氨基体入侵计划,都涉及到活跃的ECM道化和金属蛋白酶表达.
- 准MMP14 (膜结原酶) 废除了癌细胞组织的侵入性.
- 在复杂的3D环境和人类乳腺组织中,MMP14对于入侵至关重要,其缺失会导致核损伤.
- 在侵袭性人类乳腺癌中MMP14表达与原体降解相关.
结论:
- MMP14是一种关键的蛋白酶,对于介质细胞和杏仁体癌细胞的入侵都是必要的.
- 这项研究挑战了阿米虫入侵独立于ECM蛋白解的教条.
- MMP14在引导癌细胞在体内入侵中发挥着至关重要的病理生理作用.
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