增强抗瘤免疫力的共价植物天然产品
Misao Takemoto1, Sara Delghandi2, Masahiro Abo1
1Division of Biochemistry, Institute for Chemical Research (ICR), Kyoto University, Uji, Kyoto 611-0011, Japan.
Journal of the American Chemical Society
|January 10, 2025
概括
一种天然产品Arvenin I通过向MK3来重新激活耗尽的T细胞,从而提高癌症免疫疗法的有效性. 这种共价激酶激活剂有望增强抗瘤免疫力.
科学领域:
- 免疫学
- 药理学
- 自然产品化学
背景情况:
- 免疫检查点抑制剂具有前景,但由于瘤微环境中的T细胞功能障碍而受到限制.
- 小分子组合疗法面临临临床挑战.
- 开发激活抗瘤免疫力的新方法对于癌症治疗至关重要.
研究的目的:
- 确定抗瘤免疫的新型激活剂.
- 开发一种基于细胞的系统,以选能够在癌症微环境中克服T细胞枯竭的化合物.
主要方法:
- 对232种具有电友功能组的天然产品进行细胞选.
- 化学蛋白质和机械分析以确定分子点和途径.
- 在小鼠体内进行研究,以评估与免疫治疗结合的治疗潜力.
主要成果:
- 鉴定出Arvenin I (库库比他素B2-O-β-d- 糖化物) 是一个T细胞激活剂.
- 在耗尽的T细胞中,Arvenin I对MK3进行共价激活,从而激活p38MAPK通路并改善线粒体适应性.
- 作为单一疗法和与免疫检查点抑制剂结合使用,Arvenin I提高了小鼠的癌症免疫疗效.
结论:
- 这是一种强有力的共价激酶激活剂,可恢复已耗尽的T细胞.
- 阿维宁I显著增强癌症免疫疗法和增强抗瘤免疫力.
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