跨疫苗酸重编程CD8+T细胞和抗瘤免疫力
Hao Fan1,2,3, Siyuan Xia1,2,4, Junhong Xiang5
1Department of Hematology and Medical Oncology, Emory University, Atlanta, GA, USA.
Nature
|November 22, 2023
概括
通过促进CD8+T细胞功能,增强了抗瘤免疫力. 这种营养物质使GPR43受体失活,促进T细胞活性,并提供潜在的癌症治疗策略.
科学领域:
- 免疫学
- 营养科学
- 癌症研究
背景情况:
- 饮食营养对人类生理学至关重要,但它们影响身体过程的确切机制尚未完全理解.
- 循环营养物质,如跨酸 (TVA),发挥调节作用,但它们对免疫功能的具体影响需要进一步阐明.
研究的目的:
- 调查饮食营养素,特别是转酸 (TVA) 影响免疫细胞功能和抗瘤免疫力的机制.
- 确定TVA对CD8+T细胞的影响的分子点和途径.
主要方法:
- 使用基于血液营养化合物库的选方法来识别生物活性饮食化合物.
- 研究了饮食中的TVA对CD8+T细胞功能和抗瘤免疫力的体内影响.
- 研究了参与TVA免疫调节作用的分子机制,包括受体相互作用和信号通路 (cAMP- PKA- CREB轴).
主要成果:
- 在体内,饮食中的跨疫苗酸 (TVA) 被确定为直接促进 CD8+ T 细胞功能和抗瘤免疫力.
- 发现TVA通过对抗其短链脂肪酸连接体来禁用免疫调节受体GPR43.
- 这种失活导致cAMP-PKA-CREB信号轴的激活,从而增强CD8+T细胞的功能.
结论:
- 从饮食中获得的TVA代表了重新编程CD8+T细胞的宿主外部机制,与来自肠道微生物群的短链脂肪酸不同.
- 在开发新型癌症免疫疗法方面,TVA具有显著的转化潜力.
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