间充质干细胞及其衍生物对供肝修复的潜在价值

近年来，我国器官移植工作发展迅速，器官供需比例严重失衡。为解决供肝短缺问题，修复扩大标准供肝、改善供肝质量是当前的重要研究方向。间充质干细胞是一类具有自我更新、分化潜能的干细胞，具有免疫调节和组织修复等功能，其衍生物具有低免疫原性和良好的生物相容性等优点，因而广泛应用于各种疾病的治疗。本文通过综述间充质干细胞及其外泌体和细胞外囊泡在改善肝脏脂肪变性、修复缺血-再灌注损伤、促进小体积供肝再生方面的相关研究进展，总结间充质干细胞及其衍生物在供肝修复应用中的可行性及安全性，为修复边缘供肝、改善供肝质量提供新思路。

Potential value of mesenchymal stem cells and their derivatives in repairing donor liver

In recent years, organ transplantation has developed rapidly in China, whereas the proportion of supply and demand of organs for donation is severely unbalanced. To resolve the shortage of donor livers, repairing extended criteria donor liver and improving the quality of donor liver are critical research directions. Mesenchymal stem cell (MSC) is a category of stem cells with self-renewal and differentiation potential, which possess the functions of immunomodulation and tissue repair. The derivatives of MSC have the advantages of low immunogenicity and high biocompatibility, which have been widely applied in the treatment of multiple diseases. In this article, research progress on the role of MSC, exosomes and extracellular vesicles in alleviating liver steatosis, repairing ischemia-reperfusion injury and promoting the regeneration of small-for-size liver allograft was reviewed, and the feasibility and safety of MSC and the derivatives in repairing donor liver were summarized, aiming provide novel ideas for repairing marginal donor liver and enhancing the quality of liver allograft.