一个用于表观遗传调节和增强癌症免疫治疗的药物递送仓库
Junzhong Lai1, Jiadi Liang2, Yong Zhang2
1The Cancer Center, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, PR China.
Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie
|October 14, 2023
概括
这项研究开发了用于癌症治疗的新型奇托-泽布拉林纳米粒子 (CS-Zeb NPs). 这些纳米颗粒有效地减少了瘤负担并增强了免疫反应,与独立泽布拉林相比,所需剂量显著降低.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
- 癌症免疫疗法癌症免疫疗法
背景情况:
- DNA甲基转移酶抑制剂 (DNMTis) 在癌症管理中至关重要.
- 泽布拉林 (Zeb) 在瘤免疫治疗中表现有前途,但由于缺乏向性,需要高剂量.
- 开发有针对性的药物输送系统可以提高治疗效率并减少副作用.
研究的目的:
- 创建和评估一种新的纳米药物配方Zebularine (Zeb) 使用pH响应的奇托 (CS).
- 评估CS-Zeb纳米颗粒 (NP) 的向药物释放,抗瘤疗效和免疫调节作用.
- 在临床前癌症模型中,将CS-Zeb NP与独立的Zeb的治疗性能进行比较.
主要方法:
- 对pH反应的奇托桑-泽布拉林纳米颗粒 (CS-Zeb NPs) 的配方.
- 在不同pH值下 (酸性与中性) 药物释放的体外评估.
- 在B16F10瘤携带的小鼠模型中对抗瘤活性,存活率和免疫细胞群 (CD8+ T细胞,TILs) 的体内评估.
主要成果:
- 与中性条件 (pH 7.4) 相比,CS-Zeb NPs在酸性环境 (pH 5.5) 中表现出药物释放的增强.
- 在体内研究表明,与单独使用Zeb相比,CS-Zeb NPs显著降低了小鼠的瘤负担和延长了小鼠的存活时间.
- CS-Zeb NPs治疗导致CD8+ T细胞和瘤透淋巴细胞 (TILs) 的增加.
结论:
- CS-Zeb NPs代表了癌症治疗的有希望的向药物递送系统.
- 这种纳米药物配方显著提高了治疗效果,并减少了所需的泽布拉林剂量.
- 这种创新方法为癌症治疗提供了潜在的替代化疗策略.
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