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南京医科大学学报(自然科学版)                                  第41卷第6期
               ·810 ·                     Journal of Nanjing Medical University(Natural Sciences)   2021年6月


             ·基础医学·


              人羊膜间充质干细胞培养上清通过环状 RNA⁃0001649/miR⁃
              203a/VEGFA/MMP9信号通路促进血管生成



              胡丽萍    1,2,3 ,肖轶婧  1,2,3 ,唐子春  1,2,3 ,孙 典  1,2,3 ,沈  铭  1,2,3*

               南京医科大学附属口腔医院综合诊疗科,江苏省口腔疾病研究重点实验室,江苏省口腔转化医学工程研究中心,江苏                                           南
              1                                2                          3
              京 210029



             [摘    要] 目的:探究人羊膜间充质干细胞(human amnion-derived mesenchymal stem cell,hAMSC)条件培养上清(conditioned
              medium,CM)是否通过环状RNA⁃0001649(circ⁃0001649)促进人脐静脉内皮细胞(human umbilical vein endothelial cell,HUVEC)
              血管生成及其可能的机制。方法:将HUVEC分为对照组、CM刺激组、circ⁃0001649敲低后CM刺激组(si⁃circ⁃0001649+CM刺激

              组)、敲低对照加CM刺激组(si⁃NC+CM刺激组),检测各组HUVEC的血管生成能力和迁移能力,以及血管内皮生长因子A(vas⁃
              cular endothelial growth factor A,VEGFA)、基质金属蛋白酶 9(matrix metalloproteinase 9,MMP9)的水平。同时通过敲低 circ⁃
              0001649后转染miR⁃203a⁃inhibitor 进行拯救实验验证hAMSC⁃CM促进HUVEC血管生成的作用机制。结果:hAMSC培养上清
             (hAMSC⁃CM)明显提高 HUVEC 的血管生成和迁移能力,促进 VEGFA 和 MMP9 以及细胞内 circ⁃0001649 的表达。敲低 circ⁃
              0001649后降低了hAMSC⁃CM对HUVEC血管生成和迁移能力的影响。生物信息学分析以及拯救实验发现circ⁃0001649可以
              通过结合 miR⁃203a,减少 miR⁃203a 对 VEGFA 以及 MMP9 的抑制作用,促进 hAMSC⁃CM 对 HUVEC 的成血管和迁移能力。结
              论:hAMSC⁃CM可上调HUVEC细胞内circ⁃0001649表达,通过其竞争性结合miR⁃203a,促进VEGFA和MMP9表达进而发挥促
              血管生成作用。
             [关键词] 人羊膜间充质干细胞;人脐静脉内皮细胞;血管生成

             [中图分类号] R329.2                   [文献标志码] A                        [文章编号] 1007⁃4368(2021)06⁃810⁃07
              doi:10.7655/NYDXBNS20210604



              Conditioned medium from human amnion ⁃ derived mesenchymal stem cells promotes
              angiogenesis through circRNA ⁃ 0001649/miR ⁃ 203a/VEGFA and miR ⁃ 203a/MMP9
              signaling pathway

              HU Liping 1,2,3 ,XIAO Yijing 1,2,3 ,TANG Zichun 1,2,3 ,SUN Dian 1,2,3 ,SHEN Ming 1,2,3*
               Department of Generul Density,the Affiliated Stomatological Hospital of Nanjing Medical University,Jiangsu Key
              1                                                                                     2
                                                                    3
              Laboratory of Oral Diseases of Nanjing Medical University,Jiangsu Province Engineering Resarch Center of
              Stomatological Translational Medicine,Nanjing 210029,China


             [Abstract] Objective: This study aims to investigate whether conditioned medium from human amnion⁃derived mesenchymal stem
              cells(hAMSC⁃CM)promotes angiogenesis of human umbilical vein endothelial cells(HUVEC)via circRNA⁃0001649(circ⁃0001649).
              Methods: HUVECs were divided into control group,conditioned medium stimulation group(CM ⁃ group),conditioned medium
              stimulation after knockdown of circ⁃0001649 group(si⁃circ⁃0001649+ CM group)and knockdown control with conditioned medium
              stimulation group(si⁃NC+CM group). And the angiogenic and migratory abilities of HUVECs in each group were then detected,as well
              as the expression of VEGFA and MMP9. After that,inhibition of miR⁃203a followed by down⁃regulation of circ⁃0001649 in HUVECs
              treated with hAMSC ⁃ CM were functional performed to confirm the relative mechanism. Results: The hAMSC ⁃ CM significantly
              increased the angiogenic and migratory capacity of HUVECs,the protein levels of VEGFA and MMP9,and the expression of
              intracellular circ⁃0001649. Knockdown of circ⁃0001649 inhibited the effect of hAMSCs⁃CM on the angiogenesis and migratory of

             [基金项目] 江苏高校优势学科建设工程资助项目(2018⁃87)
              ∗
              通信作者(Corresponding author),E⁃mail: mingshen85@yahoo.com
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