在肺癌中,MiR-29和MiR-140调节了TRAIL诱导的药物耐受性
Suyeon Kim1, Ki Wook Lee1, Yongjin Yoo2
1Department of Integrative Biotechnology, Sungkyunkwan University, Suwon, Republic of Korea.
Animal cells and systems
|May 2, 2024
概括
肺癌中与瘤亡因子相关的诱导亡联体 (TRAIL) 耐药性与miR-29和miR-140表观遗传变化有关. 恢复这些microRNA可能会使瘤对TRAIL治疗重新敏感.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 与瘤亡因子相关的诱导亡的配体 (TRAIL) 具有抗癌潜力,但由于药物耐药性而面临限制.
- 对 TRAIL 的获得性耐药性是一个重要的障碍,可能通过中间药物耐受性进行调解.
- 微RNA (miRNA) 依赖的表观遗传修饰与 TRAIL 诱导的耐药性 (TDT) 有关.
研究的目的:
- 为了研究miRNA依赖的表观遗传修饰在TRAIL耐药性中的作用.
- 为了确定特定的miRNA及其点,参与肺癌中TRAIL耐受性状态.
- 探索治疗策略,以克服肺癌中TRAIL抗性的治疗方法.
主要方法:
- 对TRAIL耐受性细胞进行转录组分析,以确定差异表达的miRNA及其标.
- 验证miRNA-目标相互作用及其与肺癌细胞系和患者样本中TRAIL敏感性的相关性.
- 在 TRAIL 敏感性,RSK2 mRNA 表达和NF-κB 激活之间进行相关性分析.
主要成果:
- 在TDT细胞中观察到miR-29向基因的激活,这表明肺癌中的瘤特征.
- 恢复的TRAIL敏感性与miR-29ac和miR-140-5p的表达相关,这些表达抑制了致癌的RSK2 (p90核糖体S6激酶).
- 增加RSK2mRNA表达与NF-κB激活有关,这是TRAIL耐药性的已知因素.
结论:
- 在TRAIL治疗的肺癌中,依赖于MiRNA的表观遗传修饰驱动药物耐受性.
- miR-29ac和miR-140-5p通过抑制RSK2并保持TRAIL灵敏度来发挥瘤抑制作用.
- 抑制miR-29ac和miR-140-5p可能是提高肺癌治疗中TRAIL疗效和耐久性的策略.
相关概念视频
MicroRNAs
3.0K
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...
3.0K
Drugs that Stabilize Microtubules
2.0K
Microtubules are dynamic structures that undergo cycles of catastrophe and rescue. The microtubules play a central role in cell division by forming the spindle apparatus for segregating the chromosomes. This makes them ideal targets for regulating dividing cells in tumors and malignant cancer cells. Microtubule stabilizing drugs help stabilize the microtubule formation and promote its polymerization. Paclitaxel was the first microtubule stabilizing agent used as anticancer drug in chemotherapy...
2.0K


