以线粒体DNA增强的树突细胞为基础的纳米接种引发了肺癌和胰腺癌的抗瘤免疫力
Lihuan Shang1, Xue Jiang1, Xinbao Zhao2
1Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Sun Yat-sen Memorial Hospital, State Key Laboratory of Oncology in South China, Sun Yat-sen University, Guangzhou 510120, China; Medical Research Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China.
Cell reports. Medicine
|July 10, 2024
概括
低迁移性树突细胞 (DC) 水平与免疫感冒瘤有关. 一种新的纳米疫苗策略有效地将这些瘤转化为免疫热状态,增强抗瘤免疫力,并在临床前模型中改善生存率.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 纳米技术 纳米技术
背景情况:
- 低迁移性树突细胞 (DC) 水平与癌症免疫监测受损和免疫治疗结果不佳有关.
- 降低DC水平对瘤免疫微环境和治疗反应的确切影响需要进一步阐明.
研究的目的:
- 为了研究降低迁移性DC水平和免疫感冒瘤之间的联系.
- 开发和评估一种新的纳米疫苗策略,用于增强免疫感冒瘤的抗瘤免疫力.
主要方法:
- 开发了一种基于DC的自主纳米疫苗接种策略,使用患者衍生器官或癌细胞溶解酸脉冲的阴离子纳米粒子 (cNP) 来加载DC衍生微粒 (cNP癌细胞@MVDC).
- 通过体内成像和免疫学测试,评估了纳米疫苗在 ортотоп性胰腺和肺癌模型中的疗效.
- 研究了涉及cGAS-STING通路激活的潜在机制.
主要成果:
- 临床证据将降低的迁移性DC水平与免疫感冒瘤和患者的不良结果联系在一起.
- 在临床前模型中,cNP癌细胞@MVDC纳米疫苗成功将免疫冷瘤转化为热状态.
- 治疗增加了迁移性DCs,激活了T细胞和NK细胞,减少了瘤生长,并提高了生存率.
- 在体内成像显示了纳米疫苗的优异瘤和淋巴结积累,促进免疫细胞透.
- 在机械上,cNP丰富了线粒体DNA,增强了cGAS-STING介导的DC激活和迁移.
结论:
- 开发的纳米疫苗战略有效地逆转了免疫冷瘤表型.
- 这种方法通过增加DC迁移和激活细胞毒性免疫细胞来增强抗瘤免疫力.
- 该战略通过改变瘤的免疫微环境,为个性化癌症治疗提供了希望.
相关概念视频
Tumor Immunotherapy
509
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.
509
Cancer Vaccines
350
Cancer treatment vaccines are a rapidly evolving field that offers a promising approach to immunotherapy. Unlike traditional vaccines that prevent diseases, cancer treatment vaccines are designed to treat existing cancers by stimulating the immune system to recognize and attack cancer cells.
Cancer vaccines come in two categories: preventive (prophylactic) and treatment (active). Preventive vaccines, such as the Human Papillomavirus (HPV) vaccine, protect against viruses that cause certain...
Cancer vaccines come in two categories: preventive (prophylactic) and treatment (active). Preventive vaccines, such as the Human Papillomavirus (HPV) vaccine, protect against viruses that cause certain...
350


