circPDK1竞争性地结合miR-4731-5p以调节GIGYF1表达并增加非小细胞肺癌中帕克利塔塞尔敏感度
YunYin Feng1, TaoLong Zhang2, Hong Liu3
1Department of Respiratory, Kaihua County Traditional Chinese Medicine Hospital, No.10 Zhongshan Road, Qinyang Office, Quzhou City, 324000, Zhejiang Province, China. Fyyin1406B@hotmail.com.
Discover oncology
|May 11, 2024
概括
这项研究表明,减少circPDK1通过向miR-4731-5p/GIGYF1通路,提高了非小细胞肺癌 (NSCLC) 中的帕克利塔塞尔敏感性. 这一发现为克服NSCLC药物耐药性的潜在治疗策略提供了机会.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
背景情况:
- 帕克利塔克塞尔 (PTX) 耐药性是治疗非小细胞肺癌 (NSCLC) 的一个主要挑战.
- 循环RNAs (circRNAs) 在癌症进展和耐药性方面发挥着关键作用.
- 在NSCLC中,circPDK1对PTX耐药性的特定作用仍然在很大程度上未被探索.
研究的目的:
- 阐明circPDK1在非小细胞肺癌中帕克利塔塞尔耐药性发展中的作用.
- 为了研究 circPDK1-介导的PTX抗性背后的分子机制.
主要方法:
- 量化实时PCR和西部斑被用来测量circPDK1,miR-4731-5p和GIGYF1的表达.
- 进行了细胞增殖,细胞亡和入侵试验,以评估细胞反应.
- 双 luciferase 报告者和 RIP 测定证实了分子之间的向相互作用.
- 使用异种移植瘤模型来评估 circPDK1抑制的体内效应.
主要成果:
- 发现circPDK1在PTX抵抗性NSCLC细胞中被上调.
- Knockdown 的 circPDK1 抑制了扩散和入侵,诱导了细胞亡,并在耐药细胞中增加了 PTX 敏感性.
- circPDK1直接针对miR-4731-5p,而miR-4731-5p反过来又针对GIGYF1.1,而GIGYF1.3则针对GIGYF1.
- 抑制GIGYF1逆转了circPDK1对PTX敏感性的影响.
- 在体内研究证实,抑制circPDK1会抑制瘤生长并增强PTX的疗效.
结论:
- circPDK1通过海绵化miR-4731-5p和升级调节GIGYF1.1,促进NSCLC中帕克利塔塞尔耐药性.
- 针对circPDK1/miR-4731-5p/GIGYF1轴是一个有希望的治疗策略,以克服NSCLC中PTX耐药性.
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