title: Expression of Claudin-1, Claudin-3 and Claudin-5 in human blood-brain barrier mimicking cell line ECV304 is inducible by glioma-conditioned media.
abstract: Up to now no standard cell culture model of the blood-brain barrier is available. However, several models based on primary cells or continuous cell lines have been characterized and described in respect of different applications. One of the most important characteristics of the blood-brain barrier is the restriction of paracellular transport, respectively its tightness. Human cell line ECV304 is one of the promising continuous cell lines for blood-brain barrier modelling due to two reasons: on the one hand the cells are able to form significant tighter layers than most of the other cell lines used and on the other hand several properties of the blood-brain barrier are inducible by using glioma-conditioned medium. Claudins are transmembranal proteins which form the backbone of the tight junctions at the blood-brain barrier. We have investigated the presence and inducibility of the expression of Claudin-1, Claudin-3 and Claudin-5 using immunofluorescence microscopy. For the first time this study proves the presence of Claudin-1, Claudin-3 and Claudin-5 in ECV304 (obtained from ECACC) cell layers and the inducibility of their expression by glioma-conditioned media.
authors.affiliation: Department of Medicinal Chemistry, University of Vienna, Pharmacy Center, Althanstrasse 14, A- 1090 Vienna, Austria.
authors.forename: Winfried
authors.initials: W
authors.lastname: Neuhaus
authors.forename: Michael
authors.initials: M
authors.lastname: Wirth
authors.forename: Verena E
authors.initials: VE
authors.lastname: Plattner
authors.forename: Bettina
authors.initials: B
authors.lastname: Germann
authors.forename: Franz
authors.initials: F
authors.lastname: Gabor
authors.forename: Christian R
authors.initials: CR
authors.lastname: Noe
mesh_terms: D000818:Animals; D001812:Blood-Brain Barrier / Q000166:cytology* / Q000187:drug effects / Q000378:metabolism*; D001932:Brain Neoplasms / Q000378:metabolism; D002460:Cell Line; D062445:Claudin-1; D062465:Claudin-3; D062507:Claudin-5; D017077:Culture Media, Conditioned / Q000494:pharmacology; D004353:Drug Evaluation, Preclinical / Q000379:methods; D042783:Endothelial Cells / Q000187:drug effects / Q000378:metabolism*; D005455:Fluorescent Antibody Technique; D005910:Glioma / Q000378:metabolism; D006801:Humans; D008565:Membrane Proteins / Q000378:metabolism*; D021381:Protein Transport / Q000502:physiology; D051381:Rats; D019108:Tight Junctions / Q000378:metabolism
chemical_list: C568108:CLDN1 protein, human; C568122:CLDN3 protein, human; C107466:CLDN5 protein, human; D062445:Claudin-1; D062465:Claudin-3; D062507:Claudin-5; C568114:Cldn1 protein, rat; C568124:Cldn3 protein, rat; D017077:Culture Media, Conditioned; D008565:Membrane Proteins