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由UBAP2L驱动的压力颗粒形成与氧化抗性与胃癌相关
Chaorui Wu1,2, Yu Yan3, Qichen Chen4
1Department of General Surgery & Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China.
Communications biology
|August 13, 2025
概括
由UBAP2L驱动的压力颗粒 (SGs) 形成,通过抑制亡,导致胃癌 (GC) 中的氧化抗性. 准SG或HSF1可以克服这种阻力,提供新的治疗策略.
科学领域:
- 细胞生物学 细胞生物学
- 癌症研究 癌症研究
- 分子瘤学分子瘤学
背景情况:
- 压力颗粒 (SG) 是细胞对有害刺激的保护机制.
- SGs在抗氧化抗性的作用,特别是在胃癌 (GC) 中,仍然不清楚.
- 奥克萨利普拉丁是用于GC治疗的关键化疗剂.
研究的目的:
- 在GC中建立SG形成和oxaliplatin耐药性之间的因果关系.
- 为了确定参与SG介导的氧化抗性的关键因素.
- 探索针对SG的治疗策略,以克服氧沙抗药性.
主要方法:
- 使用GC模型研究了SG形成在抗氧化抗性中的作用.
- 鉴定出一种与乌比奎相关的蛋白质2类 (UBAP2L) 作为一种关键的SG核子.
- 研究了UBAP2L核化SG,RACK1,HSF1和AKT信号通路之间的相互作用.
- 在体内评估了抑制SG或HSF1在克服oxaliplatin耐药性的有效性.
主要成果:
- 在GC中建立了SG形成和oxaliplatin耐药性之间的直接联系.
- 通过SG核化确定UBAP2L作为氧沙抗性的关键媒介.
- 证明UBAP2L核化SG通过招募RACK1.1来抑制亡.
- 表明,氧沙胺诱导的HSF1激活通过AKT升高调节UBAP2L转录.
- 抑制SG或HSF1在体内有效地克服了oxaliplatin的耐药性.
结论:
- 具有UBAP2L核的SG在GC中介氧化抗性的过程中起着至关重要的作用.
- 升高的SG水平代表了克服抗氧化抗性的有希望的治疗标.
- 准UBAP2L-SG-HSF1轴为增强GC化疗疗效率提供了一种新的策略.
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