MiR-140-3p通过抑制肺腺癌中PD-L1/ABCG2/MVP表达来提高对多西素的敏感性
Minji Kwon1, Dayeon Lim1, Jayeon Park1
1Department of Medical Sciences, Graduate School, Soonchunhyang University, Asan, Republic of Korea.
Anticancer research
|September 30, 2024
概括
微RNA-140-3p (miR-140-3p) 可能改善肺腺癌 (LUAD) 治疗结果. 低的miR-140-3p预测生存率和多塞素耐药性较差,但其恢复增强了药物敏感性并抑制了瘤生长.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 非小细胞肺癌 (NSCLC),包括肺腺癌 (LUAD) 和肺平细胞癌 (LUSC),经常过度表达编程死亡连接体1 (PD-L1),导致免疫逃避和耐药性.
- 特定微RNAs (miRNAs) 在调节PD-L1表达和影响NSCLC药物耐药性的作用需要进一步研究.
研究的目的:
- 研究miRNAs,特别是miRNA-140-3p (miR-140-3p) 在克服非小细胞肺癌 (NSCLC) 耐药性的潜力.
- 确定miR-140-3p表达水平,患者预后和在LUAD和LUSC中对化疗的反应之间的相关性.
主要方法:
- 利用Kaplan-Meier绘图器和接收器操作特征绘图器来分析miRNA表达,患者存活率和NSCLC中的化疗反应.
- 进行了体外测试,包括细胞活力,殖民地形成和入侵测试,以及定量实时PCR (qPCR) 测试,以评估miR-140-3p在LUAD细胞中的功能.
- 在体内评估了miR-140-3p模拟剂和多赛对LUAD细胞活力,耐药性基因表达 (ABCG2,MVP) 和瘤生长的联合作用.
主要成果:
- 在LUAD患者中观察到较低的miR-140-3p表达,与生存率差相关,但在LUSC中不显著.
- miR-140-3p模仿抑制的LUAD细胞增殖,殖民地形成和入侵.
- 在没有对多塞素反应的LUAD患者中发现显著较低的miR-140-3p表达.
- 联合治疗miR-140-3p和dcetaxel比单独治疗更有效地降低了LUAD细胞活力和药物耐药基因 (ABCG2,MVP) 的表达.
- 与单独使用多塞塞尔相比,同时使用miR-140-3p模仿剂和多塞塞尔显著抑制了瘤生长.
结论:
- 在LUAD中升高的miR-140-3p表达与良好的预后有关.
- miR-140-3p对LUAD治疗具有治疗潜力,特别是在提高患者对多塞素化疗的反应方面.
相关概念视频
MicroRNAs
MicroRNA (miRNA) are short, regulatory RNA transcribed from introns—non-coding regions of a gene—or intergenic regions—stretches of DNA present between genes. Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA ends...
MicroRNAs
MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...


