阿尔法-2巨球蛋白调节器通过高葡萄糖在淋巴细胞介质细胞中的上调
Jackie Trink1, Renzhong Li1, Bo Gao1
1Division of Nephrology, McMaster University, Hamilton, ON L8N 1Y3, Canada.
Biomolecules
|November 27, 2024
概括
糖尿病病涉及增加的α2-宏球蛋白 (A2M). 激活T细胞5 (NFAT5) 和叉头盒P1 (FOXP1) 的核因子调节高葡萄糖中的A2M,而Smad3则控制基底A2M水平.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學.
- 分子生物学分子生物学
- 内分泌学 在内分泌学.
背景情况:
- 糖尿病病 (DKD) 影响高达40%的糖尿病患者,导致功能丧失.
- 阿尔法2-宏球蛋白 (A2M) 在DKD中升高,并促进中细胞 (MC) 的纤维化.
- 在DKD中,通过高葡萄糖 (HG) 调节A2M仍然不清楚.
研究的目的:
- 阐明调节α2-宏球蛋白 (A2M) 表达在糖尿病病 (DKD) 中高葡萄糖 (HG) 反应中的分子机制.
- 确定关键的转录因子和信号通路,涉及到A2M高调在质介质细胞 (MC).
主要方法:
- 在MC中使用序列删除和位点定向突变发生的A2M促进体活性分析.
- 使用siRNA和ChIP试验研究了转录因子NFAT5,FOXP1和Smad3的作用.
- 在与分离的球粒细胞进行的ex vivo研究中得到验证的结果.
主要成果:
- 在MC中,A2M促进体的A-405bp区域被确定为对HCG有反应.
- 发现NFAT5及其辅因子FOXP1在对HG的反应中协同调节A2M转录.
- 独立于HG,Smad3调节了A2M促进剂活性和蛋白质的产生.
结论:
- 对于基底和HG诱导的A2M表达,Smad3是必不可少的.
- NFAT5和FOXP1协同调解HG诱导的A2M转录的增加.
- 准NFAT5/FOXP1是一个潜在的治疗策略,可以减少DKD中的A2M和纤维化信号.
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