类似病毒的纳米粒子通过Filopodia-Mediated Internalization向胰腺癌细胞输送小干扰RNA
Li Yi1,2, Ting Wang3, Benli Song2
1CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing 100190, China.
ACS nano
|June 2, 2025
概括
一种新的基于的病毒样纳米粒子 (pVLP) 系统通过诱导filopodia,改善细胞吸收和用于癌症治疗的STAT3基因沉默来增强小干扰RNA (siRNA) 向固体瘤的传递.
科学领域:
- 生物技术是生物技术.
- 纳米医学是一种纳米医学.
- 癌症治疗方法 癌症治疗方法
背景情况:
- 将小干扰RNA (siRNA) 有效地输送到固体瘤是RNA干扰 (RNAi) 疗法的重要障碍.
- 目前的方法面临的挑战是,细胞吸收效率低,毒性超标.
研究的目的:
- 开发一种以病毒为灵感的基病毒样纳米粒子 (pVLP) 系统,以增强siRNA向固体瘤的传递.
- 为了提高瘤细胞特定向和细胞内传染效率.
主要方法:
- 用瘤向酸 (EphA2,CD13),一种自我组装和一种用于siRNA封装的氨酸丰富来设计的pVLP.
- 研究了pVLP诱导的filopodia形成及其对细胞吸收的影响.
- 在体外对信号转换器和转录3激活器 (STAT3) 的基因沉默和在体内对 орто托普胰腺癌模型的疗效进行了评估.
主要成果:
- 通过filopodia诱导,pVLP系统显著增强了细胞吸收 (10.9倍增加).
- 在试验室中实现了>90%的STAT3基因沉默,具有高瘤细胞选择性 (选择性比4.5).
- 在体内,pVLP减少了STAT3 mRNA表达的3.7倍,比MC3 LNP更多,导致91.6%的mRNA降解. 联合治疗显示出协同作用的瘤生长抑制 (高达87%).
结论:
- 基于的病毒样纳米粒子 (pVLP) 系统有效地克服了固体瘤中的siRNA传递挑战.
- 这种以病毒为灵感的策略表明了基于RNAi的癌症治疗中临床翻译的巨大潜力.
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