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紫素增加了CD8+效应T细胞的功能和免疫疗法的有效性
Freya Q Zhang1, Jiacheng Li1, Rukang Zhang1
1Department of Medicine, The University of Chicago, Chicago, IL 60637, USA.
Cell reports. Medicine
|September 2, 2025
概括
来自水果和蔬菜的营养素紫素 (ZEA) 增强了CD8+ T细胞的抗瘤免疫力. 它增强了T细胞受体信号传递,提高了对抗癌症的免疫疗法的有效性.
科学领域:
- 免疫学
- 营养科学
- 癌症学
背景情况:
- 对抗瘤免疫的饮食成分的机制尚未完全理解.
- 紫素 (ZEA) 是一种已知对眼睛健康有好处的胡卜素.
- 在癌症治疗中,从饮食来源中识别新型免疫调节剂至关重要.
研究的目的:
- 确定调节抗瘤免疫力的饮食化合物.
- 调查芝丁 (ZEA) 对CD8+T细胞的免疫调节作用.
- 阐明ZEA增强抗瘤反应的机制.
主要方法:
- 使用血液营养化合物库进行基于共培养的查.
- 用ZEA和黄蛋白 (LUT) 进行体内口服补充的研究.
- 综合多组分析研究细胞内信号通路.
主要成果:
- 紫素 (ZEA) 增强了对瘤细胞的CD8+ T细胞毒性.
- 口服ZEA,但不是LUT,可以改善体内抗瘤免疫力.
- 它促进T细胞受体 (TCR) 刺激和细胞内信号传递.
- 增加了抗PD1免疫检查点抑制剂和TCR基因工程T细胞的疗效.
结论:
- 紫素 (ZEA) 具有以前未知的免疫调节功能.
- 通过改善CD8+T细胞功能,ZEA可以增强抗瘤免疫力.
- 作为一种增强癌症免疫疗法的食补充剂,ZEA具有转化潜力.
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