光敏和双的纳米粒子提供小干扰RNAYTHDF1用于肝癌分子向免疫治疗
Shang Chen1,2, Yan He1,3, Xin Huang1,4
1Department of Laboratory Medicine, Huazhong University of Science and Technology Union Shenzhen Hospital (Nanshan Hospital), Shenzhen University, Shenzhen, 518052, People's Republic of China.
Journal of nanobiotechnology
|June 19, 2024
概括
这项研究开发了双重向的纳米粒子,以提供癌症免疫治疗剂. 这些纳米粒子将与瘤相关的巨细胞 (TAMs) 重编为抗瘤状态,增强对抗癌症的免疫反应.
科学领域:
- 纳米技术 纳米技术
- 癌症免疫疗法癌症免疫疗法
- 分子生物学分子生物学
背景情况:
- 瘤相关巨细胞 (TAMs) 是瘤微环境 (TME) 的关键调节者,是癌症免疫治疗的有希望的标.
- 在TME内,有效地向TAM输送治疗剂仍然是一个重大挑战.
- 目前的策略往往缺乏具体性,并可能导致目标外的效应.
研究的目的:
- 开发一种光敏感的,双向的纳米粒子系统,以有针对性地向TAM和癌细胞输送治疗剂.
- 研究该系统在将TAM重编程为抗瘤表型并增强抗癌免疫力的有效性.
- 评估光热疗法 (PTT) 和RNA干扰 (RNAi) 在癌症治疗中的联合作用.
主要方法:
- 开发M.RGD@Cr-CTS-siYTHDF1纳米颗粒,具有双向配体 (RGD和曼) 和含有纳米颗粒 (Cr NPs) 和YTHDF1siRNA的核心.
- 利用CrNP在激光照射上的光热效应来破坏TME并促进药物输送.
- 在携带瘤的小鼠体内实验中评估纳米粒子生物分布,基因沉默,TAM重编程和抗瘤免疫反应.
主要成果:
- 双重准的纳米粒子有效地将siYTHDF1传递给TAMs,使YTHDF1基因沉默,并改变了STAT3-STAT1平衡.
- 光热疗法破坏了TME,导致TAMs从M2 (免疫抑制) 变为M1 (抗瘤) 现型.
- 这种重编程抑制了IL-10的产生,增加了IL-12和IFN-γ,增强了CD8+T细胞的透,并减少了调节性T细胞 (Tregs).
结论:
- 开发的双向纳米粒子系统集成了PTT和RNAi,用于有效的癌症免疫疗法.
- 这种方法显示出重编程TME并通过向TAM增强抗瘤免疫力的巨大潜力.
- M.RGD@Cr-CTS-siYTHDF1 NPs为分子向癌症免疫治疗提供了一个有前途的策略,具有潜在的临床应用.
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