[Research Progress of Mesenchymal Stem Cells and Their Exosomes on Tumors].

In China, malignant tumor is the main cause of death in both urban and rural areas. Mesenchymal stem cells (MSCs) have multidirectional differentiation potential, self-renewal ability and good immunomodulatory properties. Exosomes, as important paracrine substances of MSCs, mediate information exchange and transmission between cells in tumor microenvironment and influence the occurrence and development of tumors. Recently, conflicting findings have been reported on the effects of MSCs and their exosomes on tumors. On the one hand, MSCs and their exosomes are tumorigenic and can target specific sites to inhibit tumor growth; On the other hand, there is also evidence that MSCs could affect tumor growth and migration as part of the tumor microenvironment. In this paper, we will review the relationship between MSCs and exosomes and tumorgenesis and development, as well as how MSCs and exosomes play different roles in tumorgenesis and development, in order to provide beneficial help for tumor diagnosis, prognosis and precise treatment. .【中文题目：间充质干细胞及其外泌体对肿瘤影响的 研究进展】 【中文摘要：在我国，无论城市还是农村，恶性肿瘤都是我国居民死亡的主要原因。间充质干细胞（mesenchymal stem cells, MSCs）具有多向分化潜能、自我更新能力和良好的免疫调节特性。而外泌体作为MSCs旁分泌的重要物质，在肿瘤微环境中介导细胞间的信息交流与传递，影响肿瘤的发生发展。有研究报道了MSCs及其来源的外泌体对肿瘤的影响具有相互矛盾的发现，一方面MSCs及其外泌体具有肿瘤趋向性，能够靶向特定部位抑制肿瘤生长；另一方面也有证据表明MSCs具有致瘤性，作为肿瘤微环境的一部分影响肿瘤的生长和迁移。本文将综述MSCs及其外泌体与肿瘤发生发展的关系以及MSCs及其外泌体如何在肿瘤发生发展中扮演不同角色，以期为肿瘤的诊断、预后和精准治疗提供有益的帮助。 】 【中文关键词：间充质干细胞；外泌体；肿瘤；癌症】.