重编程Postblation瘤免疫微环境与双功能纳米治疗免疫调节器,用于协同抗瘤免疫和抑制复发
Bing Wang1, Zhicheng Yan2,3, Yuhan Shen1
1Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Ultrasound, Peking University Cancer Hospital & Institute, Peking University, Beijing 100142, China.
ACS nano
|March 4, 2026
概括
对于肝脏瘤而言,射频除 (RFA) 可以导致免疫抑制. 一种新的纳米疗法可以逆转这种抑制并增强抗瘤免疫力,有效地减少瘤复发.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 纳米医学是一种纳米医学.
背景情况:
- 射频切除 (RFA) 是肝脏瘤的关键治疗方法,但切除后瘤复发是一个重要的临床问题.
- RFA可以诱导免疫抑制,主要是通过髓质衍生抑制细胞 (MDSC),阻碍宿主免疫系统对抗残留癌症的能力.
- 利用RFA的潜力来刺激抗瘤免疫力,需要克服这种免疫抑制环境.
研究的目的:
- 开发一种纳米治疗策略,同时逆转RFA诱导的免疫抑制并增强抗瘤免疫反应.
- 为了研究一种STING激动剂和一种MDSC分化剂的同时递送的疗效,以调节消去后的全身免疫景观.
主要方法:
- 工程制造的纳米粒子 (cA@NPs) 联合封装了2",3"循环瓜诺辛腺单酸 (cGAMP),一种STING激动剂,以及全转网红酸 (ATRA),一种MDSC分化剂.
- 在残留瘤模型中评估纳米治疗策略,以评估其对免疫抑制和抗瘤免疫力的影响.
- 进行了全面的临床前评估,以确定cA@NPs抑制微转移,远程瘤和正管病变的能力.
主要成果:
- 在切除后逆转MDSC驱动的免疫抑制对于有效的抗瘤免疫是至关重要的.
- 设计的cA@NPs成功地逆转了RFA后的免疫抑制,并激活了用于免疫启动的STING通路.
- 临床前研究表明,cA@NPs通过重塑免疫微环境,显著抑制瘤生长,包括微转移和远程病变.
结论:
- 开发的纳米疗法免疫调节策略有效地将局部热移除与全身免疫强化相结合.
- 这种方法为临床转化提供了一个有前途的途径,通过将RFA与纳米疗法协同作用来打击肝脏瘤复发.
- 这些发现为使用纳米药物来增强RFA的抗瘤功效提供了机制基础,并解决了一个关键的临床挑战.
更多相关视频
09:23Inducing Targeted Mild Hyperthermia in Murine Tumor Models through Photothermal Conversion of Near-infrared Light by Intratumoral Gold Nanorods
Published on: October 10, 2025
1.6K
09:04Analysis of Human T Cell Activity in an Allogeneic Co-Culture Setting of Pre-Treated Tumor Cells
Published on: March 7, 2025
1.8K
相关概念视频
Tumor Immunotherapy
2.1K
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.
2.1K
Targeted Cancer Therapies
9.0K
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...
9.0K
