通过SERCA介导的内质网膜应激促进了造血干细胞的动员
Lijun Li1, Danhua Xu1, Xinxin Huang2
1Shanghai Xuhui Central Hospital, Zhongshan-Xuhui Hospital, and The Shanghai Key Laboratory of Medical Epigenetics, The International Co-laboratory of Medical Epigenetics and Metabolism (Ministry of Science and Technology), Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China.
Stem cell research & therapy
|April 24, 2025
概括
用BHQ诱导轻度的内质网膜 (ER) 应激,BHQ是一种Sarco/内质网膜Ca2+-ATPase (SERCA) 抑制剂,增强了造血干细胞 (HSC) 的动员. 这一策略通过CaMKII-STAT3-CXCR4通路改善高细胞迁移,有利于干细胞疗法.
科学领域:
- 血液学 血液学 血液学
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
背景情况:
- 造血干细胞 (HSC) 移植是恶性疾病的关键治疗方法.
- 加强HSC动员可以改善移植结果和患者的存活率.
- 轻微的内质网膜 (ER) 压力可能会促进HSC的自我更新和生存.
研究的目的:
- 调查诱导轻度ER压力是否可以促进HSC动员.
- 探索SERCA-ER应激通路在高度细胞动员中的作用.
主要方法:
- 使用流式细胞计量对ER压力诱导剂和Sarco/内分泌网膜Ca2+-ATPase (SERCA) 抑制剂治疗后评估细胞表型变化.
- 在小鼠中使用殖民地形成单元 (CFU) 试验评估HSC调动疗效.
- 通过qPCR和西部抹杀分析了CaMKII-STAT3-CXCR4通路的分子和蛋白质表达水平.
主要成果:
- 作为SERCA抑制剂的BHQ在体内显著增强了HSC的动员.
- BHQ抑制了SERCA活动,调节了CaMKII-STAT3-CXCR4通路.
- 这导致HSCs上的CXCR4表达减少,促进它们从骨髓释放出来.
结论:
- 在HSC动员中,SERCA-ER应激通路起着至关重要的作用.
- 使用BHQ针对SERCA活动,通过调节CaMKII-STAT3-CXCR4通路来增强HSC动员.
- 轻微的ER压力为改善基于干细胞的疗法提供了潜在的策略,包括HSC移植.
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