在瘤微环境中巨细胞的极化利用高通量单细胞代谢学
Xuesen Hu1,2,3, Xinlin Liu4, Disheng Feng1,2,3
1CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
Analytical chemistry
|September 2, 2024
概括
谷氨酸对于瘤微环境中的M1巨细胞两极分化至关重要. 这项研究使用单细胞代谢学来显示谷氨酸可用性影响M1与M2巨细胞平衡,提供新的癌症治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 代谢学 代谢学 代谢学
- 癌症生物学 癌症生物学
背景情况:
- 巨细胞是具有塑性表型 (M1/M2) 影响疾病的关键免疫细胞.
- 细胞内代谢显著影响巨细胞的两极分化和功能.
- 与瘤相关的巨细胞通常采用M2表型,促进瘤的进展.
研究的目的:
- 研究细胞内代谢物在瘤微环境中的巨细胞两极分化中的作用.
- 通过单细胞分析确定影响M1和M2巨细胞表型的关键代谢因素.
- 探索谷氨酸在巨细胞两极分化中的特定作用及其在癌症中的治疗潜力.
主要方法:
- 使用惯性微流体芯片质谱法 (IMC-MS) 进行单细胞代谢分析.
- 在极化M1和M2巨细胞中识别和量化213种代谢物.
- 统计分析包括火山图片和二进制物流回归来识别差异化代谢物.
主要成果:
- 谷氨胺被确定为一种关键代谢物,可以区分M1和M2巨细胞表型.
- 与M2极化相比,M1巨细胞极化表现出对谷氨酸的依赖程度更高.
- 谷氨酸缺乏会损害M1极化,而谷氨酸补充会增强M1极化,并抑制瘤细胞在培模型中的生长.
结论:
- 谷氨酸是瘤微环境中巨细胞两极分化的关键代谢调节剂.
- 向谷氨胺代谢是一种有前途的治疗策略,用于调节抗瘤免疫力.
- 单细胞代谢学为癌症免疫细胞功能的代谢基础提供了新的见解.
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