title: Platelet endothelial cell adhesion molecule-1 (PECAM1) plays a critical role in the maintenance of human vascular endothelial barrier function.
abstract: Cardiovascular endothelial barrier dysfunction is associated with a number of cardiovascular diseases. This study aims to investigate the role of platelet endothelial cell adhesion molecule-1 (PECAM1) in the maintenance of the vascular endothelial barrier integrate. Human umbilical vein endothelial cells (HUVECs) were cultured into monolayers using as an in vitro model to assess the endothelial barrier function. Knockdown of the gene of PECAM1 markedly reduced the transendothelial resistance and increased the permeability of the HUVEC monolayers. From the wild HUVECs, we detected a complex of PECAM1, claudin1, occluding and endothelial cell selective adhesion molecule (ESAM); such a complex was not detected in the PECAM1-deficient HUVECs. Knockdown of either claudin1, or occludin, or ESAM, did not affect the formation of the tight junction (TJ) complex. Exposure to recombinant interleukin (IL)-13 inhibited the expression of PECAM1 and down-regulated the HUVEC monolayer barrier function. PECAM1 plays an important role in the formation of TJ complex.
authors.affiliation: Department of Cardiology, Shandong Provincial Hospital Affiliated to Shandong University, Shandong, China.|Department of Cardiology, Jining No. 1 People's Hospital, Jining, 272011, Shandong, China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Ren
authors.affiliation: Department of Neurosurgery, Zoucheng People's Hospital, Jining, 273500, Shandong, China.
authors.forename: Limin
authors.initials: L
authors.lastname: Ren
authors.affiliation: Department of Cardiology, Jining No. 1 People's Hospital, Jining, 272011, Shandong, China.
authors.forename: Changjie
authors.initials: C
authors.lastname: Ren
authors.affiliation: Department of Cardiology, Shandong Provincial Hospital Affiliated to Shandong University, Shandong, China.
authors.forename: Xuefei
authors.initials: X
authors.lastname: Liu
authors.affiliation: Department of Cardiology, Jining No. 1 People's Hospital, Jining, 272011, Shandong, China.
authors.forename: Chun
authors.initials: C
authors.lastname: Dong
authors.affiliation: Department of Cardiology, Shandong Provincial Hospital Affiliated to Shandong University, Shandong, China.
authors.forename: Xinghua
authors.initials: X
authors.lastname: Zhang
mesh_terms: D015536:Down-Regulation; D004730:Endothelium, Vascular / Q000378:metabolism*; D055785:Gene Knockdown Techniques; D057809:HEK293 Cells; D061307:Human Umbilical Vein Endothelial Cells; D006801:Humans; D018836:Inflammation Mediators / Q000378:metabolism; D018793:Interleukin-13 / Q000378:metabolism; D019408:Platelet Endothelial Cell Adhesion Molecule-1 / Q000378:metabolism*; D018418:Th2 Cells / Q000378:metabolism; D019108:Tight Junctions / Q000378:metabolism
chemical_list: D018836:Inflammation Mediators; D018793:Interleukin-13; D019408:Platelet Endothelial Cell Adhesion Molecule-1
keywords: barrier function; endothelium; platelet endothelial cell adhesion molecule-1; tight junction; tight junction associated protein