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阻断MSI2通过抑制上皮层-介质细胞过渡来缓解辐射诱导的肺纤维化

Shanlin Cai^1,2, Tingting Liu¹, Jianpeng Zhao¹

¹Department of Radiation Medicine, Faculty of Naval Medicine, Naval Medical University, Shanghai, China.

International journal of radiation biology

|April 14, 2025

概括

电离辐射诱导肺细胞的表皮细胞-介质细胞过渡,由musashi2 (MSI2) 驱动. 这项研究揭示了MSI2

科学领域:

细胞生物学细胞生物学
分子生物学分子生物学
辐射瘤学辐射瘤学

背景情况:

已知电离辐射 (IR) 在膜上皮细胞 (AECs) 中诱导上皮-介质细胞过渡 (EMT).
这种IR诱导的EMT是辐射诱导肺纤维化 (RIPF) 发展的关键因素.
了解IR诱导的EMT背后的分子机制对于开发RIPF的预防疗法至关重要.

研究的目的:

调查musashi2 (MSI2) 在AECs的IR诱导EMT中的作用.
阐明MSI2影响IR诱导EMT的分子机制.
探索MSI2作为预防RIPF的潜在治疗点.

主要方法:

西部斑点 (WB) 用于检测MSI2和EMT标记物的蛋白质表达水平 (E-cadherin,N-cadherin,Vimentin).
使用免疫光 (IF) 和形态分析来评估MSI2对AEC中IR诱导的EMT的影响.
用RNA测序 (RNA-Seq),WB和RT-qPCR来识别MSI2的目标.

主要成果:

在AEC中,IR显著增加了MSI2蛋白表达,伴随着E-cadherin的减少和N-cadherin和Vimentin的增加.
发现MSI2可以调节放射后AEC的形态变化和EMT标志物表达.
该研究确定ZEB1为MSI2的下游目标,调解其在IR诱导的EMT中的作用.

结论:

在AEC的IR诱导的EMT中,MSI2起着至关重要的作用.
该分子机制涉及MSI2调节转录因子ZEB1.1.的表达.
这些发现为RIPF病原体提供了新的见解,并建议MSI2作为潜在的治疗点.

关键词:

电离辐射辐射的电离辐射.膜上皮细胞是膜上皮细胞.皮质-介质细胞过渡 (EMT;),Musashi2 (MSI2),辐射诱导的肺纤维化 (RIPF).

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