合理整合精确的ER向和氧补偿光动力学免疫刺激剂,用于免疫性增强瘤治疗
Yanrong Qian1, Man Wang1, Yulin Xie1
1Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, 266237, P. R. China.
Advanced healthcare materials
|August 21, 2023
概括
这项研究设计了一种新型免疫刺激剂,以克服瘤免疫抑制. 该纳米粒子激活免疫细胞死亡,并通过向内质网膜和补偿缺氧,增强抗瘤免疫疗法.
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:
- 免疫疗法在激活抗瘤免疫力和克服免疫抑制性瘤微环境 (ITME) 方面面临着挑战.
- 现有的策略很难有效地引起对瘤的强有力的免疫反应.
研究的目的:
- 设计一种新型免疫刺激剂来减弱ITME并增强抗瘤免疫反应.
- 开发一种以纳米粒子为基础的系统,用于精确的内细胞网膜 (ER) 向光动力学疗法 (PDT) 与低氧缓解相结合.
主要方法:
- 用e6 (Ce6) 和复星 (RES) 装载的双层上转化纳米粒子 (UCNPs) 的制造,用于ER向 (UCSMR^ER) 的功能化.
- 使用980nm激光照射用于针对ER的PDT,产生活性氧物种 (ROS) 并诱导免疫细胞死亡 (ICD).
- 集成的RES可按需释放,通过抑制线粒体电子运输链 (ETC) 来抵消瘤缺氧.
主要成果:
- 在激光照射后,UCSMR^ER纳米粒子实现了精确的ER准和有效的ROS生成.
- 通过RES释放,PDT诱导了显著的ICD,并减轻了通过RES释放的瘤缺氧.
- 综合战略成功地减弱了ITME,激活了瘤免疫性,并放大了抗瘤效应.
结论:
- 开发的针对ER,减轻缺氧的纳米载体代表了一种创新的方法,以加强PDT相关免疫疗法.
- 这一策略有望克服瘤免疫抑制并提高临床应用中的抗瘤疗效.
更多相关视频
11:04An In-House-Built and Light-Emitting-Diode-Based Photodynamic Therapy Device for Enhancing Verteporfin Cytotoxicity in a 2D Cell Culture Model
Published on: January 13, 2023
3.1K
09:44Pretargeted Radioimmunotherapy Based on the Inverse Electron Demand Diels-Alder Reaction
Published on: January 29, 2019
10.1K
相关概念视频
Tumor Immunotherapy
556
Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
556
Targeted Cancer Therapies
7.7K
The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
There are several types of targeted therapies against...
7.7K
