title: [Gene regulatory mechanism of hairy and enhancer of split related-1 for angiogenesis factors].
abstract: OBJECTIVE
  To study the roles of hairy and enhancer of split related-1 (HESR-1) in maintenance of the mature, quiescent vessel and angiogenesis.
  
  
  METHODS
  Human umbilical vein endothelial cells (HUVEC) were cultured. The full-length coding sequence of HESR-1 was cloned into PcDNA3.1 + using standard protocols. HESR-1 specific siRNA was synthesized and cloned into the RNAi-Ready pSIREN-RetroQ ZsGreen Vector. The constructed PcDNA3.1 + HESR-1 plasmid were transfected into HUVEC for the overexpression of HESR-1, and HESR-1-RNAi plasmid were transfected into HUVEC to silence the HESR-1 gene, the expression of KDR, ALK-1 and Ang-1 in HUVEC were analyzed by RT-PCR and Western blot.
  
  
  RESULTS
  The expression of KDR was down-regulated and ALK-1 and Ang-1 were up-regulated in HUVEC with the overexpression of HESR-1; The expression of KDR was up-regulated and ALK-1 and Ang-1 were down-regulated the HESR-1 in HUVEC by RNAi.
  
  
  CONCLUSIONS
  HESR-1 may play an important role in maintenance of vessel in quiescent and control angiogenesis by the regulation of the expression of KDR, ALK-1 and Ang-1.
authors.affiliation: Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China.
authors.forename: Bin
authors.initials: B
authors.lastname: Li
authors.forename: Shi-bo
authors.initials: SB
authors.lastname: Tang
authors.forename: Shao-fen
authors.initials: SF
authors.lastname: Lin
authors.forename: Jing
authors.initials: J
authors.lastname: Meng
mesh_terms: D030301:Activin Receptors, Type II / Q000096:biosynthesis* / Q000235:genetics; D042683:Angiopoietin-1 / Q000096:biosynthesis* / Q000235:genetics; D051792:Basic Helix-Loop-Helix Proteins / Q000235:genetics / Q000494:pharmacology*; D002478:Cells, Cultured; D042783:Endothelial Cells / Q000187:drug effects* / Q000378:metabolism; D004730:Endothelium, Vascular / Q000166:cytology; D005786:Gene Expression Regulation / Q000187:drug effects; D018398:Homeodomain Proteins / Q000235:genetics / Q000494:pharmacology*; D006801:Humans; D018919:Neovascularization, Physiologic / Q000187:drug effects; D000072056:Transcription Factor HES-1; D014471:Umbilical Veins; D040301:Vascular Endothelial Growth Factor Receptor-2 / Q000096:biosynthesis* / Q000235:genetics
chemical_list: D030301:Activin Receptors, Type II; D042683:Angiopoietin-1; D051792:Basic Helix-Loop-Helix Proteins; D018398:Homeodomain Proteins; D000072056:Transcription Factor HES-1; D040301:Vascular Endothelial Growth Factor Receptor-2; C078493:HES1 protein, human; C425364:ACVRL1 protein, human