可注射的热敏含水凝作为介质干细胞载体,以提高肢体缺血治疗效率
Xuan Tian1,2, Xin Yan3, Nan Zang1
1Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, China.
Materials today. Bio
|February 5, 2024
概括
载有的水凝增强介质干细胞 (MSC) 存活率和治疗肢体缺血的疗效. 这种可注射系统改善了MSC的保留,并促进了血管再生,提供了一个有前途的治疗策略.
科学领域:
- 生物材料科学 生物材料科学
- 再生医学是一种再生医学.
- 干细胞疗法是一种干细胞疗法.
背景情况:
- 肢体缺血是一种严重的疾病,治疗选择有限,通常涉及炎症和组织死亡.
- 介质干细胞 (MSC) 对肢体缺血有前途,但受植入率和生存率差.
- 提高MSC活力和保留对于有效的基于细胞的疗法至关重要.
研究的目的:
- 评估对MSCs的细胞保护作用.
- 开发一种含有的可注射,热敏的水凝,以改善MSC的输送.
- 在四肢缺血模型中评估改性MSCs的治疗潜力.
主要方法:
- 研究了对MSC的影响,重点是通过GPX4上调调节保护氧化应激.
- 一种可注射的热敏水凝 (PLGA-PEG-PLGA共聚物) 被合成并以生物相容性和生物降解性进行表征.
- MSC被封装在水凝中,其治疗疗效被评估在肢体缺血的细胞和动物模型中.
主要成果:
- 通过转录性上调GPX4.4保护MSC免受氧化损伤.
- 含的水凝显示出出色的生物相容性,生物降解性和抗氧化特性.
- 封装的MSCs促进了M2巨细胞的两极分化,增强了血管生成,并恢复了缺血四肢的血液 perfusion.
结论:
- 可注射热敏水凝是MSC治疗肢体缺血的有前途的输送系统.
- 这种方法克服了低MSC保留的挑战,改善治疗结果.
- 通过水凝进行增强的MSC输送,为肢体缺血再生提供了可行的策略.
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