输送miR-29a通过降低 I 原蛋白表达的调节,提高了 cisplatin 的透性
Zhongyu Qin1, Jin Ma2, Xu Chu3
1Department of Basic Medicine, Changzhi Medical College, Changzhi, 04600, Shanxi, China.
Biochemical and biophysical research communications
|April 10, 2024
概括
微RNA-29a在瘤微环境中准原I,增强化疗药物输送和肺癌疗效. 这种方法在临床前模型中改善了西斯普拉丁治疗结果.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 生物化学 生化学
背景情况:
- 化疗耐药性,通常是由于药物流入减少,限制了抗瘤治疗的有效性.
- 瘤微环境 (TME) 显著影响药物透和治疗结果.
- 在肺癌中观察到过度表达主要的细胞外矩阵蛋白质 - - 原I,并与患者的生存率低下有关.
研究的目的:
- 研究miR-29a在调节肺癌中的 I 原表达中的作用.
- 评估miR-29a对肺癌细胞行为和化疗敏感性的影响.
- 评估miR-29a配送与体内化疗结合的治疗潜力.
主要方法:
- 对肺癌组织中的原I表达的分析.
- 在体外研究涉及miR-29a转移到易斯肺癌 (LLC) 细胞.
- 3D瘤模型用于评估药物透和细胞死亡.
- 在体内研究使用自发性LLC瘤模型与基于脂质乳液的miR-29a输送.
主要成果:
- miR-29a转染抑制了LLC细胞中的 I原表达,抑制了细胞迁移,但不能抑制细胞增殖,细胞亡或细胞循环.
- 在3D瘤模型中,miR-29a显著增加了西斯丁 (CDDP) 透率和CDDP诱导的细胞死亡.
- 基于脂质乳液的miR-29a增强了cisplatin在体内治疗的疗效.
结论:
- 通过 miR-29a 准 I 原表达可以通过改善药物流入来克服化学抵抗.
- miR-29a作为治疗剂具有前途,可以提高肺癌化疗的有效性.
- 通过原I抑制调节TME是一种可行的策略,可以改善肺癌治疗结果.
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...


