TRAF3/STAT6轴调节巨细胞两极分化和瘤进展
Jian-Hong Shi1,2,3,4, Li-Na Liu5,6, Dan-Dan Song5,6
1Central Laboratory, Affiliated Hospital of Hebei University, Baoding, 071000, Hebei, China. shijianhong@hbu.edu.cn.
Cell death and differentiation
|July 20, 2023
概括
与瘤相关的巨细胞 (TAM) 重编程是癌症治疗的关键. 由于TRAF3缺乏,它通过调节STAT6无化,抑制瘤生长和转移来促进M1巨的两极分化.
科学领域:
- 免疫学 免疫学 免疫学
- 癌症生物学 癌症生物学
- 分子生物学分子生物学
背景情况:
- 瘤相关巨细胞 (TAMs) 经常表现出M2表型,阻碍了抗瘤免疫力.
- 将TAM重编程为M1表型是一种有前途的癌症治疗策略.
- TRAF3 (TNF受体关联因子3) 在TAM两极分化中的确切作用尚不清楚.
研究的目的:
- 研究TRAF3在巨细胞极化中的作用.
- 阐明TRAF3影响TAM表型的分子机制.
- 评估向TRAF3在癌症中的治疗潜力.
主要方法:
- 巨细胞极化试验 (M1/M2标记物).
- 量化无处不在学和西方涂抹来分析蛋白质无处不在.
- 路西法酶和位点定向突变发生的测试用于研究STAT6激活.
- 在体内B16黑色素瘤小鼠模型评估瘤生长和转移.
主要成果:
- 移除TRAF3可以增强M1标记物 (iNOS,FGR,SLC4A7) 和减少M2标记物 (CD206,CD36,ABCC3).
- 缺陷TRAF3促进了LPS诱导的M1两极化,并抑制了IL-4诱导的M2两极化.
- 发现TRAF3促进了STAT6的泛化和转录活性,特别是在K450残留物中.
- 在小鼠模型中,骨髓细胞特异性TRAF3缺乏抑制了瘤生长和肺转移.
结论:
- 在促进M2巨细胞两极分化方面,TRAF3起着至关重要的作用.
- TRAF3通过在K450部位增强STAT6的无化来调节M2的极化.
- 向TRAF3可能是抑制瘤进展和转移的新疗法策略.
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