利用梅特福林对免疫细胞的免疫调节作用,对抗乳腺癌
Andjela Petrovic1, Ivan Jovanovic1, Bojan Stojanovic1,2
1Center for Molecular Medicine and Stem Cell Research, Faculty of Medical Sciences, University of Kragujevac, Svetozara Markovica 69, 34000 Kragujevac, Serbia.
International journal of molecular sciences
|June 19, 2024
概括
在乳腺癌模型中,甲胺通过激活自然杀手T (NKT) 细胞和T细胞来增强免疫反应,同时抑制调节性T细胞 (Tregs) 和髓质衍生抑制细胞 (MDSCs).
科学领域:
- 免疫学 免疫学 免疫学
- 癌症生物学 癌症生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 甲福明是一种抗血糖药物,具有免疫调节作用.
- 自然杀手T (NKT) 细胞在癌症免疫力中起着复杂的作用.
- 甲胺对乳腺癌NKT细胞功能的影响还未得到充分研究.
研究的目的:
- 在4T1乳腺癌小鼠模型中研究甲福明对免疫细胞表型的影响.
- 具体分析甲福明对自然杀手T (NKT) 细胞功能和激活的影响.
- 评估甲福明对T细胞,调控性T细胞 (Tregs),髓质衍生抑制细胞 (MDSCs) 和树突细胞 (DCs) 的调节.
主要方法:
- 在BALB/C WT小鼠中使用了4T1乳腺癌模型.
- 给药甲胺和分析了脏和瘤组织中的免疫细胞群.
- 采用流细胞计量来评估免疫细胞标记物,包括IFN-γ,CD107a,PD-1,FoxP3,IL-10,NKp46,FasL,KLRG1,Gr-1,NF-κB,iNOS和DC数量.
- 测量了细胞因子和信号分子的表达 (MIP1a,STAT4,NFAT).
主要成果:
- 梅特福林的使用延迟了瘤的生长和出现.
- 增加IFN-γ+和NKp46+NKT细胞的百分比,增强CD107a和FasL的表达.
- 减少PD-1+,FoxP3+和IL-10+NKT细胞的百分比,KLRG1的表达.
- 在脏和瘤组织中减少Tregs和MDSCs.
- 增加树突细胞数量和T细胞激活标记物的表达.
- 脊髓细胞表达MIP1a,STAT4和NFAT的升高.
结论:
- 甲福明广泛调节免疫系统,激活NKT和T细胞.
- 甲胺抑制了像Tregs和MDSCs这样的免疫抑制细胞.
- 这些免疫调节作用表明,通过改变瘤微环境,甲胺在癌症免疫治疗中的潜力.
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