具有ATP反应的基细菌材料协同激活瘤免疫疗法的cGAS-STING通路
Huang Yang1,2, Sisi Yang3, Quanshi Guo2
1Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China.
Advanced materials (Deerfield Beach, Fla.)
|February 28, 2024
概括
工程细菌在瘤中释放离子,促进cGAS-STING通路,用于增强抗癌细菌免疫疗法. 这种新的方法在抑制黑色素瘤和肝癌生长方面表现有前途.
科学领域:
- 生物技术是生物技术.
- 免疫学 免疫学 免疫学
- 材料科学 材料科学 材料科学
背景情况:
- 循环氨酸单酸 (GMP) - 氨酸单酸 (AMP) 合成酶 (cGAS) - 刺激干扰素基因 (STING) 途径是细菌激活抗瘤免疫力的关键.
- 目前的细菌免疫疗法由于途径刺激不足而面临局限性.
研究的目的:
- 设计一种对腺5'-三酸盐 (ATP) 敏感的细菌材料,用于协同激活cGAS-STING通路.
- 通过克服刺激局限性来提高细菌免疫疗法的疗效.
主要方法:
- 开发了一种对ATP敏感的基于 (Mn) 的细菌材料 (E. coli@PDMC-PEG).
- 研究了该材料在瘤微环境中的降解,释放Mn离子并暴露细菌.
- 评估了Mn离子和细菌细胞外DNA (eDNA) 对cGAS-STING通路的协同激活.
主要成果:
- 设计的生物混合材料协同激活了cGAS-STING通路.
- 离子 (Mn2+) 增强cGAS对细菌eDNA的敏感性.
- 大肠杆菌@PDMC-PEG和VNP20009@PDMC-PEG显著抑制了小鼠的皮下黑色素瘤和子的肝癌.
结论:
- 开发的基于Mn的细菌材料为增强细菌免疫治疗提供了一个有前途的战略.
- 这种方法有效地利用瘤微环境的ATP来激活cGAS-STING通路.
- 为推进基于细菌的癌症治疗提供了宝贵的见解.
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