索尔比托在位凝改善大鼠缺血性心脏:支持介质干细胞存活并增强膜效应
Hue Thi Le1, Atsushi Mahara2, Takeshi Nagasaki3
1National Cerebral and Cardiovascular Center Research Institute, 6-1 Kishibe Shim-machi, Suita, Osaka 564-8565, Japan; Department of Physiology, Hanoi Medical University, Hanoi 10000, Viet Nam.
概括
通过改善细胞存活率和膜功能,增强了对索尔比托尔反应的干细胞疗法,从而改善了心脏的修复. 这种新型的MSC加载水凝 (MSC/SRG) 具有显著的治疗潜力.
科学领域:
- 生物材料科学
- 复原医学
- 心血管研究
背景情况:
- 介质干细胞 (MSCs) 显示出通过心肌信号修复的前景,但其临床疗效有限.
- 现有的MSC疗法需要外部刺激或在治疗心肌缺血方面表现适度.
- 开发了一种对醇有反应的现场凝材料 (SRG),以增强MSC的传递和功能.
研究的目的:
- 在急性心肌缺血的小鼠模型中评估MSC载入SRG (MSC/SRG) 内心注射的疗效.
- 阐明SRG增强MSC治疗潜力的机制.
- 优化SRG配方以改善MSC的生存和功能.
主要方法:
- 开发和优化由含酸聚合物,聚乙烯醇和醇组成的对醇有反应的水凝 (SRG).
- 在急性心肌缺血的小鼠模型中,单独注射MSC/ SRG或单独注射MSC.
- 在体外和体内测试以评估MSC存活率,增殖,细胞因子分泌,血管生成,心脏功能和纤维重塑.
主要成果:
- 与单独注射MSC或SRG相比,MSC/SRG注射显著改善了心脏功能,并减少了纤维重塑.
- 优化的SRG配方 (25 mg/ mL聚合物,10 mg/ mLPVA,5 mg/ mL sorbitol) 延长了MSC的存活时间和增强了膜功能.
- 在试验室中,补充索比促进了MSC增殖,调节了细胞因子分泌,并刺激了血管生成.
结论:
- 对醇反应的水凝 (SRG) 有效地支持MSC的存活,并增强其对心肌修复的近活性.
- MSC/SRG是一种有前途的细胞治疗心肌缺血,改善心脏功能和组织再生.
- 这项研究强调了基于水凝的干预措施在心血管疾病中促进MSC的治疗效果的潜力.
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