Endothelial Aquaporin-1 (AQP1) Expression Is Regulated by Transcription Factor Mef2c

  • Jiang, Yong (Medical Examination College, Jilin Medical University) ;
  • Liu, He (Medical Examination College, Jilin Medical University) ;
  • Liu, Wen-jing (Medical Examination College, Jilin Medical University) ;
  • Tong, Hai-bin (Life Science Research Center, Beihua University) ;
  • Chen, Chang-jun (Medical Examination College, Jilin Medical University) ;
  • Lin, Fu-gui (Medical Examination College, Jilin Medical University) ;
  • Zhuo, Yan-hang (Medical Examination College, Jilin Medical University) ;
  • Qian, Xiao-zhen (Medical Examination College, Jilin Medical University) ;
  • Wang, Zeng-bin (Medical Examination College, Jilin Medical University) ;
  • Wang, Yu (Medical Examination College, Jilin Medical University) ;
  • Zhang, Peng (Medical Examination College, Jilin Medical University) ;
  • Jia, Hong-liang (Medical Examination College, Jilin Medical University)
  • Received : 2015.08.20
  • Accepted : 2015.11.26
  • Published : 2016.04.30


Aquaporin 1 (AQP1) is expressed in most microvasculature endothelial cells and forms water channels that play major roles in a variety of physiologic processes. This study aimed to delineate the transcriptional regulation of AQP1 by Mef2c in endothelial cells. Mef2c cooperated with Sp1 to activate human AQP1 transcription by binding to its proximal promoter in human umbilical cord vein endothelial cells (HUVEC). Over-expression of Mef2c, Sp1, or Mef2c/Sp1 increased HUVEC migration and tube-forming ability, which can be abolished AQP1 knockdown. These data indicate that AQP1 is a direct target of Mef2c in regulating angiogenesis and vasculogenesis of endothelial cells.


angiogenesis;AQP1;Mef2c;migration;vascular tube formation


Supported by : Science and Technology Department of Jilin Province, National Natural Science Foundation of China, Jilin Provincial Health Department


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