SDF-1/CXCR4轴参与脂肪衍生的干细胞迁移
Jiang Li1, Tibin Deng1, Shaojie Zhu1
1The Second Ward of Urology, Qujing Affiliated Hospital of Kunming Medical University, Qujing, China.
Neurourology and urodynamics
|August 16, 2024
概括
树皮细胞衍生因子-1 (SDF-1) /C-X-C化学因子受体4型 (CXCR4) 轴对于脂肪基干细胞 (ADSC) 迁移至关重要. 这一途径,特别是涉及Janus激酶 (JAK) 和蛋白激酶B (AKT) 信号传导,对于ADSC在压力尿失禁模型中的定位至关重要.
科学领域:
- 干细胞生物学 干细胞生物学
- 再生医学是一种再生医学.
- 泌尿器科 泌尿器科 泌尿器科 泌尿器科
背景情况:
- 静脉输入脂肪衍生干细胞 (ADSCs) 在治疗压力尿失禁 (SUI) 中具有潜力.
- 在尿道组织中发现了具有C-X-C化学因子受体4型 (CXCR4) 阳性的ADSCs,其连接体 - - 树皮细胞衍生因子-1 (SDF-1) - - 在SUI模型中被上调调.
研究的目的:
- 调查SDF-1/CXCR4轴在ADSCs定位和迁移中的作用.
- 阐明SDF-1-介导ADSC迁移中涉及的信号通路.
主要方法:
- 分离和表征ADSCs. 这些ADSCs被分离和表征.
- 在SDF-1刺激后,CXCR4和CXCR7表达通过西部斑点和免疫光分析.
- 对ADSC应用了低氧条件,以评估SDF-1,CXCR4和CXCR7中的变化.
- 基因沉默 (siRNAs) 被用于击倒CXCR4和CXCR7.
- 抑制了JAK,AKT和ERK信号通路,以研究它们在ADSC迁移中的作用.
主要成果:
- ADSCs表达CXCR4和CXCR7,表达在SDF-1刺激和缺氧时增加.
- 在ADSC迁移中,SDF-1/CXCR4轴是必不可少的.
- 刺激SDF-1激活了JAK和AKT信号通路.
- 抑制JAK和AKT信号,或沉默CXCR4,抑制ADSC迁移,而阻断ERK或沉默CXCR7没有显著的影响.
结论:
- SDF-1/CXCR4轴是ADSC迁移的一个关键调节器.
- 这个轴,特别是通过JAK和AKT信号,在ADSC指导潜在的SUI治疗中发挥着重要作用.
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