title: Endothelin-2/vasoactive intestinal contractor via ROCK regulates transglutaminase 1 on differentiation of mouse keratinocytes.
abstract: We previously found that endothelin-2/vasoactive intestinal contractor (ET-2/VIC) greatly increased in mouse epidermis after birth. In the present study, we evaluated whether ET-2/VIC expression was associated with the calcium-induced differentiation of cultured mouse keratinocytes. The differentiation induction was revealed by morphological change, cornified envelope (CE) formation, and involucrin and transglutaminase 1 (TG 1) expressions. ET-2/VIC gene expression and peptide production subsequently increased in the induction of the differentiation. We also found that Y-27632, a Rho-associated coiled-coil forming protein serine/threonine kinase (ROCK) inhibitor, suppressed up-regulation of ET-2/VIC gene expression, the induction of morphological change, the CE formation, and TG 1 expression, but not involucrin expression. These results indicate new three findings, (1) ET-2/VIC expression increases and has potential as a differentiation marker, (2) ET-2/VIC expression is mediated by ROCK, and (3) the ROCK regulated TG 1 expression, on the calcium-induced differentiation of mouse keratinocytes.
authors.affiliation: Institute for Biological Resources and Functions, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 6, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan. COX05272@nifty.com
authors.forename: Eiichi
authors.initials: E
authors.lastname: Kotake-Nara
authors.forename: Satoshi
authors.initials: S
authors.lastname: Takizawa
authors.forename: Kaname
authors.initials: K
authors.lastname: Saida
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D002454:Cell Differentiation / Q000502:physiology; D019333:Endothelin-2 / Q000378:metabolism*; D036341:Intercellular Signaling Peptides and Proteins; D047908:Intracellular Signaling Peptides and Proteins / Q000378:metabolism*; D015603:Keratinocytes / Q000166:cytology* / Q000378:metabolism*; D008544:Melanocytes / Q000166:cytology / Q000378:metabolism; D051379:Mice; D010455:Peptides / Q000378:metabolism*; D017346:Protein Serine-Threonine Kinases / Q000378:metabolism*; D015398:Signal Transduction / Q000502:physiology; D011503:Transglutaminases / Q000378:metabolism*; D054460:rho-Associated Kinases
chemical_list: D019333:Endothelin-2; D036341:Intercellular Signaling Peptides and Proteins; D047908:Intracellular Signaling Peptides and Proteins; D010455:Peptides; C059568:vasoactive intestinal constrictor; D011503:Transglutaminases; C105804:transglutaminase 1; D017346:Protein Serine-Threonine Kinases; D054460:rho-Associated Kinases