骨髓细胞中的LC3相关细胞增强瘤免疫耐受性
Larissa D Cunha1, Mao Yang1, Robert Carter2
1Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.
Cell
|September 25, 2018
概括
在骨髓细胞中损害LC3相关的细胞 (LAP),而不是正规的自,增强了抗瘤免疫力. 这种缺陷会触发瘤相关巨细胞的炎症反应,控制瘤的生长.
科学领域:
- 免疫学
- 细胞生物学
- 癌症研究
背景情况:
- 针对自是癌症治疗的目标, 但它的组成部分有不同的作用.
- 与LC3相关的细胞分裂 (LAP) 是自蛋白在细胞成熟和信号传递中的替代功能.
研究的目的:
- 研究LAP在瘤微环境中的作用.
- 确定骨髓细胞中的LAP受损是否影响抗瘤免疫力.
主要方法:
- 使用单细胞RNA测序 (RNA-seq) 来分析骨髓细胞中的基因表达.
- 研究LAP损伤对瘤相关巨细胞 (TAM) 和抗瘤反应的影响.
主要成果:
- 骨髓细胞中的LAP受损,而不是正规的自,导致TAM控制瘤生长.
- 在LAP中的缺陷诱导了TAM中的促炎基因表达和STING介导的I型干扰素反应.
- 抗瘤作用的LAP损伤取决于T细胞,STING和I型干扰素信号.
结论:
- 骨髓细胞中的自蛋白通过LAP促进免疫抑制.
- 通过调节TAM和T细胞反应来增强抗瘤免疫力.
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