CUEDC2 ablation enhances the efficacy of mesenchymal stem cells in ameliorating cerebral ischemia/reperfusion insult.

CUEDC2 ablation enhances the efficacy of mesenchymal stem cells in ameliorating cerebral ischemia/reperfusion insult.
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DOI:
10.18632/aging.202394
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发表时间:
2021-01-20
期刊:
Aging
影响因子:
--
通讯作者:
Tan F
Tan F
中科院分区:
其他
文献类型:
--
作者:
Huang Y;Xiao X;Xiao H;Hu Z;Tan F

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间充质干细胞(MSC)治疗已被报道是一个有前途的治疗选择脑缺血/再灌注(I/R)损伤。然而,移植的MSC在不利的脑I/R诱导的微环境下的存活率差,抑制了其在临床应用中的效率。CUECD 2通过介导抗氧化能力对心肌细胞发挥保护作用。我们的研究探讨了CUEDC 2在脑I/R攻击中的功能作用,并确定CUEDC 2修饰的MSC是否可以提高受损伤神经元的治疗效果。我们还探讨了脑I/R状态的可能机制。脑I/R刺激抑制脑组织和神经元中的CUEDC 2水平。体外实验中,siRNA-CUEDC 2能显著抑制脑缺血再灌注诱导的细胞凋亡和氧化应激水平。此外,与非遗传MSC治疗组相比,MSC组中siRNA-CUEDC 2显著增强了脑I/R诱导的神经元损伤和脑组织损伤的治疗效果。在分子水平上,MSC中的siRNA-CUEDC 2通过上调谷胱甘肽过氧化物酶1(GPX 1)表达水平同时抑制NF-κ B活化,显著增强其在共培养神经元中的抗氧化和抗炎作用。这些发现为利用MSC促进脑缺血性卒中的结局提供了一种新的策略。
Mesenchymal stem cell (MSC) therapy has been reported to be a promising therapeutic option for cerebral ischemia/reperfusion (I/R) insult. However, the poor survival rate of engrafted MSCs under unfavorable cerebral I/R-induced microenvironment inhibits their efficiency during clinical application. CUE domain-containing 2(CUECD2) exhibits its protective role on cardiomyocytes by mediating the antioxidant capacity. Our study explored the functional role of CUEDC2 in cerebral I/R challenge and determined whether CUECD2-modified MSCs could improve the efficacy of treatment of the insulted neurons. We also evaluated the possible mechanisms involved in cerebral I/R condition. Cerebral I/R stimulation suppressed CUEDC2 levels in brain tissues and neurons. siRNA-CUEDC2 in neurons significantly inhibited cerebral I/R-induced apoptosis and oxidative stress levels in vitro. Moreover, siRNA-CUEDC2 in the MSCs group remarkably enhanced the therapeutic efficacies in cerebral I/R-induced neuron injury and brain tissue impairment when compared to the non-genetic MSCs treatment group. At the molecular level, siRNA-CUEDC2 in MSCs markedly enhanced its antioxidant and anti-inflammatory effect in co-cultured neurons by upregulating glutathione peroxidase 1 (GPX1) expression levels while suppressing NF-kB activation. These findings provide a novel strategy for the utilization of MSCs to promote cerebral ischemic stroke outcomes.
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