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在乳腺癌中,CLDN6通过招募DLG1/PBK复合体来触发NRF2介导的铁亡

Da Qi¹, Yan Lu², Huinan Qu³

¹The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, 130021, China.

Cell death & disease

|February 21, 2025

概括

克劳丁6 (CLDN6) 通过调节NRF2通路,触发乳腺癌中的铁. 这一发现为预后和潜在的铁灭向治疗提供了一个新的生物标志物.

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:

克劳丁6 (CLDN6) 被确定为乳腺癌中的瘤抑制剂.
过度表达CLDN6会诱导类似于铁的超结构变化,但机制尚不清楚.
在乳腺癌患者中,CLDN6的表达与铁死相关,这表明它在疾病进展中的作用.

研究的目的:

阐明CLDN6在乳腺癌中触发铁亡的机制.
调查整合CLDN6和铁死标记物的预后价值.
确定针对乳腺癌中的铁亡的治疗策略.

主要方法:

在体外和体内实验中研究CLDN6介导的铁死.
在患者数据中分析CLDN6与ferroptosis的相关性.
研究NRF2通路,PBK,AKT/GSK3β/FYN轴和DLG1/PBK复合体在CLDN6功能中的作用.

主要成果:

在乳腺癌患者中,CLDN6表达与铁症有关.
在体外和体内,CLDN6会触发NRF2介导的铁.
通过依赖于PBK的AKT/GSK3β/FYN轴,CLDN6增强了NRF2的核出口.
CLDN6通过内体通路和无素-蛋白酶体系统 (UPS) 将DLG1/PBK复合物招募到细胞膜,促进PBK降解.

结论:

通过一种涉及DLG1/PBK复合体的新型机制,CLDN6触发NRF2介导的铁亡.
在乳腺癌中,CLDN6作为可靠的预后生物标志物.
这种机制为开发针对乳腺癌的化疗法提供了基础.

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