Tissue Eng Part A:预处理或IL4-分泌间充质干细胞在不同阶段增强成骨作用

2019-01-26 MedSci MedSci原创

慢性炎症相关骨病涉及持续破坏和骨再生受损。基于间充质干细胞(MSC)的疗法具有调节炎症反应和增强组织再生的巨大潜力。我们以前表明脂多糖[LPS]加TNFα预处理的MSCs或基因修饰的炎症感应(由NFB激活驱动)分泌IL4的MSCs增强了巨噬细胞对更理想的组织修复M2型的免疫调节作用。在目前的研究中,使用体外transwell系统检查治疗性MSC的旁分泌调节对促炎反应和巨噬细胞-MSC共培养物(代

慢性炎症相关骨病涉及持续破坏和骨再生受损。基于间充质干细胞(MSC)的疗法具有调节炎症反应和增强组织再生的巨大潜力。我们以前表明脂多糖[LPS]加TNFα预处理的MSCs或基因修饰的炎症感应(由NFB激活驱动)分泌IL4的MSCs增强了巨噬细胞对更理想的组织修复M2型的免疫调节作用。在目前的研究中,使用体外transwell系统检查治疗性MSC的旁分泌调节对促炎反应和巨噬细胞-MSC共培养物(代表内源细胞)的成骨作用。

在共培养物中,分泌IL4的MSC降低TNFα和iNOS表达,并且在LPS污染的聚乙烯颗粒存在下增加精氨酸酶1和CD206表达。在污染颗粒存在下,预处理的MSC降低底部MSC-巨噬细胞共培养物中的TNFα和CD206表达。在成骨测定中,分泌IL4的MSC降低ALP表达,但在污染颗粒存在下增加茜素红染色。预处理的MSCs增加ALP和骨钙素的表达,对茜素红染色无明显影响。

这些结果表明,在较早阶段使用预处理的MSC或在晚期使用分泌IL4的MSC的潜在治疗可以增强炎性病症(包括假体周围骨溶解)中的骨再生。

原始出处:

Lin TH, Kohno Y, et al., Preconditioned or IL4-Secreting Mesenchymal Stem Cells Enhanced Osteogenesis at Different Stages. Tissue Eng Part A. 2019 Jan 17. doi: 10.1089/ten.TEA.2018.0292.

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    2019-02-10 xuyu
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    2019-06-01 gwc392
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    2019-02-28 spoonycyy
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    2019-01-27 zhaojie88
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