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hUCMSC-extracellular vesicles downregulated hepatic stellate cell activation and reduced liver injury in S. japonicum-infected mice.
Stem Cell Research & Therapy ( IF 7.5 ) Pub Date : 2020-01-09 , DOI: 10.1186/s13287-019-1539-8
Liyang Dong 1, 2 , Yanan Pu 1 , Xiaojun Chen 1 , Xin Qi 1 , Lina Zhang 1 , Lei Xu 1 , Wei Li 1 , Yongbin Ma 1 , Sha Zhou 1 , Jifeng Zhu 1 , Yalin Li 1 , Xuefeng Wang 3 , Chuan Su 1
Affiliation  

BACKGROUND Accumulating evidence shows that mesenchymal stem cells (MSCs) have the potential as a cellular therapy avenue for schistosome-induced liver injury. Extracellular vesicles (EVs) are membranous vesicles released by almost all cell types, and EVs produced by MSCs (MSC-EVs) exert therapeutic effects in several disease models. However, the potential of MSC-EVs in schistosomiasis treatment remains unclear. METHODS Using survival analysis, HE and Masson's trichrome staining, immunohistochemical, western blot analysis, real-time PCR, and EdU proliferation, we investigated the effects of human umbilical cord MSC-derived EVs (hUCMSC-EVs) on the survival and liver injury in the S. japonicum-infected mice and explored the underlying mechanism. RESULTS Here, we found that like hUCMSCs, hUCMSC-EVs significantly ameliorated liver injury and improved the survival of schistosome-infected mice. Indeed, the hUCMSC-EV-mediated alleviation of liver injury is associated with decreased expression of α-smooth muscle actin (α-SMA), collagen 1, and collagen 3. More importantly, we showed that hUCMSC-EVs directly suppressed the proliferation of LX2 (human hepatic stellate cell) in vitro. In addition, hUCMSC-EVs significantly downregulated the activation of LX2 after transforming growth factor-β1 (TGF-β1) treatment. CONCLUSION Our results provided the first evidence that hUCMSC-EVs reduced liver injury in S. japonicum-infected mice, potentially creating new avenues for the treatment of liver damage in schistosomiasis.

中文翻译:

hUCMSC胞外小泡下调了日本血吸虫感染小鼠的肝星状细胞激活并减少了肝损伤。

背景技术越来越多的证据表明,间充质干细胞(MSC)具有作为血吸虫诱导的肝损伤的细胞治疗途径的潜力。细胞外囊泡(EVs)是几乎所有细胞类型释放的膜状囊泡,而MSCs(MSC-EVs)产生的EVs在几种疾病模型中发挥治疗作用。然而,尚不清楚MSC-EVs在血吸虫病治疗中的潜力。方法使用生存分析,HE和Masson的三色染色,免疫组织化学,蛋白质印迹分析,实时PCR和EdU增殖,我们研究了人脐带MSC衍生的电动车(hUCMSC-EV)对存活和肝损伤的影响。日本血吸虫感染的小鼠并探索其潜在机制。结果在这里,我们发现像hUCMSC一样,hUCMSC-EVs可以显着改善肝脏损伤并改善血吸虫感染小鼠的存活率。确实,hUCMSC-EV介导的肝损伤缓解与α平滑肌肌动蛋白(α-SMA),胶原1和胶原3的表达降低有关。更重要的是,我们证明了hUCMSC-EV直接抑制了HUCMSC-EV的增殖。 LX2(人肝星状细胞)在体外。此外,在转化生长因子-β1(TGF-β1)处理后,hUCMSC-EVs显着下调了LX2的激活。结论我们的结果提供了第一个证据,证明hUCMSC-EVs可以减少日本血吸虫感染小鼠的肝损伤,从而可能为治疗血吸虫病的肝损伤开辟新途径。hUCMSC-EV介导的肝损伤缓解与α-平滑肌肌动蛋白(α-SMA),胶原1和胶原3的表达降低有关。更重要的是,我们证明了hUCMSC-EV直接抑制LX2的增殖(人肝星状细胞)。此外,在转化生长因子-β1(TGF-β1)处理后,hUCMSC-EVs显着下调了LX2的激活。结论我们的结果提供了第一个证据,证明hUCMSC-EVs可以减少日本血吸虫感染小鼠的肝损伤,从而可能为治疗血吸虫病的肝损伤开辟新途径。hUCMSC-EV介导的肝损伤缓解与α-平滑肌肌动蛋白(α-SMA),胶原1和胶原3的表达降低有关。更重要的是,我们证明了hUCMSC-EV直接抑制LX2的增殖(人肝星状细胞)。此外,在转化生长因子-β1(TGF-β1)处理后,hUCMSC-EV显着下调了LX2的激活。结论我们的结果提供了第一个证据,证明hUCMSC-EVs可以减少日本血吸虫感染小鼠的肝损伤,从而可能为治疗血吸虫病的肝损伤开辟新途径。转化生长因子-β1(TGF-β1)处理后,hUCMSC-EV显着下调了LX2的激活。结论我们的结果提供了第一个证据,证明hUCMSC-EVs可以减少日本血吸虫感染小鼠的肝损伤,从而可能为治疗血吸虫病的肝损伤开辟新途径。转化生长因子-β1(TGF-β1)处理后,hUCMSC-EV显着下调了LX2的激活。结论我们的结果提供了第一个证据,证明hUCMSC-EVs可以减少日本血吸虫感染小鼠的肝损伤,从而可能为治疗血吸虫病的肝损伤创造新的途径。
更新日期:2020-01-09
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