缺氧驱动的细胞外膀通过Wnt和EMT途径促进LNCaP细胞中的前转移信号
Melissa Santos1, Khansa Bukhari1, Irem Peker-Eyüboğlu1,2
1Cancer Mechanisms and Biomarkers Research Group, School of Life Sciences, University of Westminster, London W1W 6UW, UK.
Biology
|September 27, 2025
概括
来自前列腺癌细胞的缺氧驱动的细胞外囊 (EV) 通过通过Wnt信号和上皮-介质酶过渡 (EMT) 重编程正常和不那么积极的前列腺细胞来促进癌症的扩散和攻击性.
科学领域:
- 在瘤学瘤学.
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
背景情况:
- 瘤微环境,特别是缺氧,驱动前列腺癌 (PCa) 的攻击性和治疗耐药性.
- 缺氧诱导的细胞外囊泡 (EVs) 可以转移生物活性分子,改变受体细胞的行为.
- 前列腺癌的进展涉及细胞信号通路的变化,如Wnt和上皮-介质细胞过渡 (EMT).
研究的目的:
- 调查缺氧条件前列腺癌细胞的EV是否增强其他前列腺细胞系的恶性特征.
- 确定Wnt信号和EMT在缺氧衍生的EV介导重编程中的作用.
- 评估这些EV对细胞移动性,侵入性和基因表达的影响.
主要方法:
- 在低氧 (1% O2) 或正常氧条件下培养PC3前列腺癌细胞.
- 从这些条件化的细胞中分离出细胞外囊泡 (EVs).
- 为了分析,EVs被应用于LNCaP (低转移潜力) 和PNT2 (非瘤源) 前列腺细胞系.
- 进行了基因表达 (HIF-1α,Vimentin,N-cadherin,Wnt3A,Wnt5A,Fzd7,E-cadherin) 和功能测试 (运动性,侵入性).
主要成果:
- 缺氧衍生的EV增加了HIF-1α的表达和调高了间酶体标记物 (维门丁,N-cadherin) 和与Wnt相关的基因 (Wnt3A,Wnt5A,Fzd7).
- 这些EV抑制了表皮标记物E-cadherin.
- 用缺氧衍生的EVs治疗的LNCaP细胞显示运动性和侵入性增加.
- 在暴露于缺氧衍生的EVs后,PNT2细胞表现出转录组重编程.
结论:
- 转移性前列腺癌细胞的低氧驱动的EV可以传播转移性前列腺癌信号.
- 这些EV重编程了不那么攻击性和正常的前列腺细胞,可能导致瘤的进展.
- 细胞外囊泡代表了管理前列腺癌进展的有前途的治疗标.
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