准TDP-43激活的GRP78/内质网膜应激轴抑制三阴性乳腺癌的进展
Jiao Wang1, Haotian Xu1, Li Tang1
1Department of Pathophysiology, Chongqing Medical University, Chongqing, China.
Biochemical pharmacology
|September 14, 2025
概括
TAR DNA结合蛋白-43 (TDP-43) 通过增加内质网膜 (ER) 压力,促进三阴性乳腺癌 (TNBC) 的生长. 抑制TDP-43可以减少癌细胞的增殖和迁移,为TNBC提供潜在的治疗点.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 神经科学是一个神经科学.
背景情况:
- 塔尔DNA结合蛋白-43 (TDP-43) 是一种与神经退行性疾病相关的DNA/RNA结合蛋白.
- 新出现的证据表明,TDP-43也在恶性瘤中发挥作用,包括乳腺癌.
- 三阴性乳腺癌 (TNBC) 是一种具有有限向治疗的侵袭性亚型.
研究的目的:
- 研究TDP-43在三阴性乳腺癌 (TNBC) 发病过程中的作用.
- 阐明TDP-43影响TNBC进展的分子机制.
- 探索针对TNBC治疗的TDP-43的潜力.
主要方法:
- 在乳腺癌组织中对TDP-43表达的生物信息学分析.
- 在体外研究评估TDP-43对TNBC细胞增殖和迁移的影响.
- 在体内实验中评估TDP-43对瘤进展的影响.
- 机理学研究涉及mRNA结合测试,西部抹杀和ER压力标志物.
主要成果:
- 在乳腺癌组织中,TDP-43的表达显著上调.
- 提升的TDP-43在体外增强了TNBC细胞的增殖和迁移,并在体内加速了瘤的生长.
- TDP-43直接与GRP78mRNA结合,对GRP78的表达进行上调.
- IRE1α通路的GRP78激活导致ER应激增加,促进TNBC细胞的增殖和迁移.
结论:
- 在TNBC中,TDP-43通过调节内质网膜 (ER) 应激作用来促进瘤生长.
- TDP-43/GRP78/ER压力轴是推动TNBC进展的关键途径.
- 准TDP-43可能是TNBC精密治疗的有前途的治疗策略.
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