长非编码RNA UCA1通过激活PPARα介导的脂质代谢来抑制epirubicin诱导的亡
Shuaijie Sun1, Huijin Li2, Shanshan Liu3
1Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University and the Key Clinical Laboratory of Henan Province, Zhengzhou, China.
Experimental cell research
|October 2, 2024
概括
长非编码RNA UCA1促进脂质积累,阻碍了在膀癌中化疗的有效性. 抑制UCA1可能会增强细胞亡并改善膀癌患者的epirubicin治疗结果.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 代谢重编程,特别是脂质代谢异常,是癌症的关键特征,与膀癌的药物耐药性有关.
- 长非编码RNA (lncRNA) UCA1在膀癌中经常过度表达,但其在脂质代谢和药物耐药性中的作用尚不清楚.
研究的目的:
- 调查lncRNA UCA1在调节脂质代谢中的功能作用及其对膀癌细胞中epirubicin诱导的亡的影响.
- 阐明 lncRNA UCA1 影响脂质代谢和化学抵抗的分子机制.
主要方法:
- 在体外和体内实验中进行了实验,以评估脂质积累和亡.
- 量化实时PCR,西式涂抹和miRNA分析被用于研究基因和蛋白质表达.
- 用于验证的是小鼠异种移植模型和对人类膀癌患者数据的分析.
主要成果:
- lncRNA UCA1的过度表达促进了脂质的积累,并减少了膀癌细胞中的epirubicin诱导的亡.
- UCA1通过抑制miR-30a-3p上调 PPARα表达,导致下游信号发生变化 (p-AKT/p-GSK-3β/β-catenin).
- 自由脂肪酸通过将RXRα招募到其促进体上来增加IncRNA UCA1的表达,这种机制在患者样本和小鼠模型中得到证实.
结论:
- lncRNA UCA1在促进脂质代谢和在膀癌中赋予对epirubicin的耐药性方面发挥着关键作用.
- 针对 lncRNA UCA1 呈现出一种潜在的治疗策略,以克服化学抵抗并提高膀癌的治疗疗效.
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