工程CpG装载的纳米机器人驱动自介导免疫力,用于TLR9阳性癌症治疗
Yi Wang1,2,3, Sheng-Lin Qiao1,4, Jie Wang1,2
1CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|October 28, 2023
概括
新的纳米机器人向瘤输送CpG有效载荷,触发癌症免疫治疗的细胞死亡. 这种智能药物递送系统对治疗Toll-like受体9阳性癌症具有前途.
科学领域:
- 纳米医学是一种纳米医学.
- 生物技术是生物技术.
- 癌症研究 癌症研究
背景情况:
- 纳米机器人在纳米医学中提供先进的药物输送,提高癌症治疗效率并减少副作用.
- 向瘤提供有针对性的治疗有效载荷对于有效的癌症免疫疗法至关重要.
- 瘤微环境对药物输送和免疫反应调节提出了挑战.
研究的目的:
- 开发智能,对瘤微环境有反应的纳米机器人,用于有针对性的CpG输送.
- 研究这些纳米机器人的潜力,诱导托尔类受体9 (TLR9) 阳性瘤的自介导细胞死亡.
- 评估基于纳米机器人的CpG免疫疗法在引起抗瘤免疫力和抑制瘤生长方面的疗效.
主要方法:
- 通过共自组装的两性triblock聚合物来制造纳米机器人.
- 纳入一个矩阵金属酶2 (MMP2) 切割的图案,用于控制纳米机器人打开和瘤向.
- 核酸有效载荷 (CpG) 的凝结,使用富含氨酸的序列进行静电相互作用.
- 使用携带瘤的小鼠模型进行体内研究,以评估有效载荷传递,免疫反应和抗瘤作用.
主要成果:
- 成功开发出适应瘤微环境的纳米机器人,能够提供CpG有效载荷.
- 已证明有效向TLR9阳性瘤,并诱导自介导细胞死亡.
- 在小鼠模型中观察到免疫抑制瘤微环境的重编程和瘤生长和复发的抑制.
- 通过TLR9信号传递和自,确实诱导了抗瘤免疫.
结论:
- 基于纳米机器人的CpG免疫疗法是诱导抗瘤免疫的可行方法.
- 开发的纳米机器人有效地将CpG有效载荷传递给TLR9阳性瘤,重编程瘤微环境.
- 这一策略显示出未来对TLR9阳性癌症的治疗具有显著的治疗潜力.
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