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流体软度限制了胰腺癌的生长,这种生长是通过 lysosomal-cathepsin介导的 YAP1 降解来实现的

Tianci Zhang^1,2,3, Jingjing Chen², Huan Yang²

¹Department of Endocrinology and Metabolism, Research Center for Islet Transplantation, West China Hospital, Sichuan University, Chengdu, China.

Cellular and molecular life sciences : CMLS

|October 26, 2024

概括

软细胞外基质通过通过 lysosomal 途径降解 YAP1,而不是蛋白质酶体来抑制胰腺癌. 这一发现揭示了控制瘤生长和转移的新机制.

科学领域:

在瘤学瘤学.
细胞生物学细胞生物学
生物化学生物化学

背景情况:

瘤进展和恶性瘤往往与增加的组织硬度相关.
软矩阵抑制瘤发生和转移的机制尚未完全理解.

研究的目的:

阐明软细胞外基质抑制胰腺癌细胞恶性病变的机制.
为了研究YAP1降解在软肌层诱导的癌症抑制中的作用.

主要方法:

在软细胞外基质内的胰腺癌细胞中研究了YAP1降解途径.
使用纯化甲素L和溶酶体应激诱导剂 (洛昆,囊素A/B) 的体外试验分析.
分析了胰腺管腺癌 (PDAC) 患者的临床数据.

主要成果:

胰腺癌细胞在软基质中被抑制,YAP1通过自-溶酶体路径降解.
在软流体中升级的PTEN激活了 lysosomal生物发生和cysteine-cathepsins,导致YAP1降解.
溶酶体应激诱导了YAP1的积累和恶性转变;肝纤维化诱导的硬度促进了小鼠的恶性瘤.
lysosomal biogenesis 的下调与胰腺纤维化,性,YAP1 积累和 PDAC 患者的不良预后相关.

结论:

软层抑制胰腺癌,通过促进YAP1通过 lysosomal 途径降解.
这种机制涉及PTEN激活, lysosomal生物发生和cysteine-cathepsin活动.
向 lysosomal 途径可能为胰腺癌提供新的治疗策略.

关键词:

自自是一种自的过程.胰腺管道腺癌瘤软矩阵是一个软矩阵.瘤的休眠状态.是的相关蛋白1 是的相关蛋白1

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