title: Interaction exists between matriptase inhibitors and intestinal epithelial cells.
abstract: The type II trypsin-like transmembrane serine protease matriptase, is mainly expressed in epithelial cells and one of the key regulators in the formation and maintenance of epithelial barrier integrity. Therefore, we have studied the inhibition of matriptase in a non-transformed porcine intestinal IPEC-J2 cell monolayer cultured on polyester membrane inserts by the non-selective 4-(2-aminoethyl)-benzosulphonylfluoride (AEBSF) and four more selective 3-amidinophenylalanine-derived matriptase inhibitors. It was found that suppression of matriptase activity by MI-432 and MI-460 led to decreased transepithelial electrical resistance (TER) of the cell monolayer and to an enhanced transport of fluorescently labelled dextran, a marker for paracellular transport between apical and basolateral compartments. To this date this is the first report in which the inhibition of matriptase activity by synthetic inhibitors has been correlated to a reduced barrier integrity of a non-cancerous IPEC-J2 epithelial cell monolayer in order to describe interaction between matriptase activity and intestinal epithelium in vitro.
authors.affiliation: a Faculty of Veterinary Science, Department of Pharmacology and Toxicology , Szent István University , Budapest , Hungary .
authors.forename: Erzsebet
authors.initials: E
authors.lastname: Pászti-Gere
authors.affiliation: a Faculty of Veterinary Science, Department of Pharmacology and Toxicology , Szent István University , Budapest , Hungary .
authors.forename: Réka Fanni
authors.initials: RF
authors.lastname: Barna
authors.affiliation: b Faculty of Pharmacy , Semmelweis University , Budapest , Hungary , and.
authors.forename: Gabriella
authors.initials: G
authors.lastname: Ujhelyi
authors.affiliation: c Institute of Pharmaceutical Chemistry, Philipps University , Marburg , Germany.
authors.forename: Torsten
authors.initials: T
authors.lastname: Steinmetzer
mesh_terms: D000818:Animals; D001693:Biological Transport, Active / Q000187:drug effects; D002460:Cell Line; D003911:Dextrans / Q000737:chemistry / Q000378:metabolism; D017097:Electric Impedance; D004789:Enzyme Activation / Q000187:drug effects; D005453:Fluorescence; D007413:Intestinal Mucosa / Q000187:drug effects* / Q000201:enzymology*; D015394:Molecular Structure; D012697:Serine Endopeptidases / Q000737:chemistry / Q000378:metabolism*; D015842:Serine Proteinase Inhibitors / Q000494:pharmacology*; D013450:Sulfones / Q000494:pharmacology; D013552:Swine
chemical_list: D003911:Dextrans; D015842:Serine Proteinase Inhibitors; D013450:Sulfones; C002010:4-(2-aminoethyl)benzenesulfonylfluoride; D012697:Serine Endopeptidases; C485595:matriptase
keywords: 3-Amidinophenylalanine; IPEC-J2 cells; intestinal barrier integrity; matriptase inhibitors; paracellular permeability