响应刺激的纳米辅助剂使强大的免疫反应复苏,使癌症免疫疗法更敏感
Ruijie Huang1, Peijie Zhou2, Bo Chen1
1Department of Chemistry, University of Science and Technology of China, Hefei 230026, China.
ACS nano
|October 28, 2023
概括
这项研究开发了一种新的纳米治疗平台,即用伊米达佐基诺林 (LN-IMQ) 治疗瘤的脂质体纳米纤维,有效向瘤. LN-IMQ增强了抗瘤免疫力,并显示出作为癌症免疫治疗的个性化纳米疫苗的前景.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 纳米技术纳米技术
- 药物运输 药物运输 药物运输
背景情况:
- 癌症免疫疗法,如免疫检查点阻断剂 (ICBs),在许多患者中有效性有限.
- 系统注射托尔类受体激活剂,可以逆转免疫抑制瘤微环境 (TME),导致副作用.
- 开发有针对性的药物输送系统对于提高癌症治疗效率和降低毒性至关重要.
研究的目的:
- 开发和评估一个TME响应的纳米治疗平台,用于瘤中特定部位的药物释放.
- 调查以imidazoquinoline衍生的脂质体纳米微粒 (LN-IMQ) 作为单一治疗和与ICB结合的潜力.
- 探索LN-IMQ作为个性化癌症疫苗的交付载体的实用性.
主要方法:
- 制造由伊米达佐基诺林衍生的脂质体纳米纤维 (LN-IMQ).
- 评估LN-IMQ对巨细胞激活,T细胞免疫和TME中细胞因子分泌的影响.
- 在4T1携带的小鼠模型中评估LN-IMQ单一治疗的疗效,包括瘤回归和对二次挑战的耐药性.
- 研究LN-IMQ对肺转移的作用.
- 将化疗药物诱导的新抗原和与损伤相关的分子模式封装到LN-IMQ中,以创建个性化的纳米疫苗.
主要成果:
- LN-IMQ显示出显著的抗瘤疗效,在4T1携带瘤的6/8小鼠中诱导了完整的瘤回归.
- 被治疗的小鼠表现出对二次瘤挑战的抵抗力,表明持久的免疫记忆.
- LN-IMQ有效地减少了肺转移,显示了对晚期转移性疾病的有效性.
- 当作为新抗原的载体使用时,LN-IMQ成功增强了抗原性和辅助性,从而创建了一个个性化的纳米疫苗.
结论:
- LN-IMQ是一个有前途的TME响应纳米治疗平台,具有强大的抗瘤活性和与ICB协同作用的能力.
- 单一的LN-IMQ疗法可以导致瘤完全回归,并长期防止瘤复发.
- 开发的LN-IMQ平台作为个性化纳米疫苗的有效输送载体,特别是化学疗法产生的新抗原.
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