工程NK外基因组捕获了in situ抗原,用于增强瘤免疫疗法
Dan Peng1, Lili Cheng1, Junjie Tang1
1School of Biomedical Engineering, Shenzhen Campus of Sun Yat-Sen University, No. 66, Gongchang Road, Guangming District, Shenzhen, Guangdong 518107, China.
ACS applied materials & interfaces
|April 9, 2025
概括
由自然杀手细胞衍生的外体,装有Raddeanin a并修饰有maleimide和mannose,通过激活先天性和适应性免疫来增强瘤免疫疗法. 这种方法克服了免疫抑制性瘤微环境,提高了治疗效率.
科学领域:
- 免疫学 免疫学 免疫学
- 纳米技术 纳米技术
- 癌症治疗 癌症治疗
背景情况:
- 自然杀手 (NK) 细胞对于瘤免疫疗法至关重要,但面临来自免疫抑制瘤微环境 (TME) 的挑战.
- 来自NK细胞的外体体 (Neo) 显示出作为抗瘤纳米载体和免疫调节剂的潜力.
- 现有的NK细胞疗法需要策略来克服TME的局限性并提高疗效.
研究的目的:
- 设计NK细胞衍生的外体体 (Neo) 封装Raddeanin a (RA) 并用maleimide (Mal) 和mannose (Man) 修饰以加强瘤免疫疗法.
- 研究工程Neo (R@Neo-MN) 诱导免疫细胞死亡并激活cGAS/STING通路的能力.
- 评估R@Neo-MN促进树突细胞 (DC) 成熟和T细胞介导的适应性免疫的能力.
主要方法:
- 设计和合成R@Neo-MN,一个工程外体封装RA和修改Mal和Man.
- 评估R@Neo-MN的NK细胞类抗瘤功能和诱导免疫细胞死亡.
- 分析R@Neo-MN对cGAS/STING通路的激活,I型干扰素 (IFN) 释放以及随后的免疫细胞反应.
主要成果:
- R@Neo-MN表现出NK细胞类抗瘤活性,并诱导瘤细胞死亡,释放瘤相关抗原 (TAA).
- 工程外体激活了cGAS/STING通路,导致I型IFN释放.
- R@Neo-MN 通过 Mal 促进了 TAA 捕获,通过 Man 准了 DC,促进了 DC 成熟,并增强了细胞毒性 T 细胞 (CTL) 反应.
结论:
- 工程NK细胞衍生外体 (R@Neo-MN) 通过结合先天性和适应性免疫激活,为瘤免疫疗法提供了一种新的策略.
- 这种方法克服了TME的局限性,并通过有针对性的输送和免疫刺激增强了抗瘤免疫力.
- R@Neo-MN有望通过利用基于外体的药物输送和免疫调节来开发更有效的癌症免疫疗法.
相关概念视频
01:27Tumor Immunotherapy
411
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.
411
01:27Cytotoxic T Cells-mediated Immune Response
740
Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
740
01:28Cells of the Innate Immune Response
1.1K
The innate immune response is an immediate and non-specific response against pathogens, acting swiftly to prevent the spread of infections. The primary cells involved in this response are phagocytes and natural killer (NK) cells.
Phagocytes
Phagocytes police the peripheral tissues by removing cellular debris and responding to the invasion of foreign substances or pathogens. Many phagocytes attack and remove microorganisms even before lymphocytes detect them. The human body has two general...
Phagocytes
Phagocytes police the peripheral tissues by removing cellular debris and responding to the invasion of foreign substances or pathogens. Many phagocytes attack and remove microorganisms even before lymphocytes detect them. The human body has two general...
1.1K