纳米颗粒 (NP) 介导的 lncMALAT1 沉默可逆转西斯普拉丁耐药性,用于有效的肝细胞癌治疗
Ting Wang1,2, Qianyao Li1,2,3, Rui Xu2,3
1The Second Affiliated Hospital, Department of Pharmacy, Hengyang Medical School, University of South China, Hengyang, China.
Frontiers in pharmacology
|August 14, 2024
概括
这项研究引入了一个新的纳米粒子平台,用于联合提供化疗药物和基因沉默剂,以对抗耐药性肝癌. 该纳米平台通过准核长非编码RNAs,有效地逆转青的耐药性.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术纳米技术
- 在瘤学瘤学.
背景情况:
- 基于的化疗是癌症治疗的基石,但由于获得的耐药性,它面临着重大挑战.
- 长非编码RNAs (lncRNAs) 在癌症进展和耐药性方面发挥着至关重要的作用,呈现出潜在的治疗点.
- 针对lncRNAs是具有挑战性的,因为它们的多样化的亚细胞局部,包括核,线粒体和内质网膜.
研究的目的:
- 开发一个内体pH响应的纳米粒子平台,用于小干扰RNA (siRNA) 和西斯原药的联合输送.
- 调查这个平台在治疗抗西斯普拉丁肝细胞癌 (HCC) 的疗效.
- 探索向核lncRNA转移相关的肺腺癌转录1 (lncMALAT1) 的潜力,以克服化学抵抗.
主要方法:
- 一个纳米粒子平台的制造与聚乙烯糖醇 (PEG) 和聚 (2- ((diisopropylamino) 乙烯甲基酸盐) (PDPA) 核心.
- 在纳米颗粒中封装一种西斯原药和向核的两性 (NTPA) /siRNA复合体.
- 利用由内体 pH 触发的"质子海绵"效应,增强内体逃逸和药物/siRNA 释放.
- 通过NTPA将siRNA特异性传递到细胞核,以静止lncMALAT1的表达.
主要成果:
- 纳米粒子平台证明了西斯原药和siRNA对瘤细胞的有效联合传递.
- 内体pH触发了纳米粒子解离,并增强了治疗有效载荷的释放.
- NTPA/siRNA复合体成功地将siRNA输送到核中,导致lncMALAT1.1的沉默.
- 治疗显著抑制了对西斯普拉丁耐药HCC瘤的生长,证明了药物耐药性的逆转.
结论:
- 开发的内体pH响应纳米粒子平台为癌症治疗的治疗剂提供了有前途的策略.
- 这种平台通过通过siRNA传递有效地克服HCC中西斯氨酸耐药性的目标,通过核IncMALAT1进行向.
- 该研究强调了纳米医药与基因沉默结合的潜力,以提高癌症治疗效率.
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