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核向的化学酸纳米棒通过局部DNA损伤和STING激活来增强先天的抗瘤免疫力

Yeyang Wu¹, Yanmei Li¹, Ni Yan¹

¹School of Biomedical Engineering & Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Southern Medical University, Guangzhou 510515, PR China.

Journal of controlled release : official journal of the Controlled Release Society

|April 5, 2024

概括

核向纳米棒 (PFPD) 通过引起DNA损伤和STING通路激活来激活天生的免疫力. 这种策略通过增强自然杀手和T细胞反应,有效地根除瘤.

科学领域:

生物医学工程生物医学工程
免疫学免疫学免疫学
纳米医学是一种纳米医学.

背景情况:

干扰素基因刺激器 (STING) 途径是增强抗瘤免疫力的有希望的目标.
加强用于癌症治疗的STING通路存在重大挑战.

研究的目的:

开发核向的化学纳米棒 (PFPD),用于局部DNA损伤和STING激活.
增强先天的抗瘤免疫力,以有效的全身瘤治疗.

主要方法:

PFPD纳米棒是使用光敏感剂和向核的质制造的,装有刺痛激动剂DMXAA.
光照射诱导反应性氧物种 (ROS) 导致核DNA损伤,释放细胞质DNA碎片.
释放的DNA片段,以及STING激动剂,激活了先天的抗瘤免疫力.

主要成果:

PFPD表现出均的纳米尺寸分布和针对药物输送的良好稳定性.
当光照射时,可以实现局部DNA损伤和STING激活.
PFPD显著增强了自然杀手和T细胞的反应.
在体内观察到肺转移性瘤的有效根除,没有任何不良影响.

结论:

PFPD为局部天生的免疫激活提供了一个复杂的策略.
这种方法显示了全身瘤治疗的潜力,并激发了精密疗法的纳米医学设计.

关键词:

免疫学细胞死亡这是天生的免疫力.核目标定位是核目标定位.光动力学疗法是一种光动力学疗法.在cGAS/STING路径中.

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