title: MON-150, a versatile monoclonal antibody against involucrin: characterization and applications.
abstract: A monoclonal antibody, designated MON-150, was found serendipitously to react strongly with the granular layer of normal human epidermis and with the upper spinous layers of psoriatic epidermis. From analysis by flow cytometry of cultured human keratinocytes, it appeared that the percentage of MON-150-positive cells strongly increased when the cells reached confluence and the growth fraction declined. To identify the antigen recognized by MON-150, a lysate of human keratinocytes was subjected to affinity chromatography using a MON-150 Sepharose column. This yielded a single protein of approximately 350 kDa as measured on Superose 6 FPLC gel permeation chromatography using non-denaturing conditions. In Western blot analysis under denaturing and reducing conditions, a 140-kDa protein was detected. The subcellular localization and the molecular weight of the antigen recognized by MON-150 suggested that the antigen involved might be involucrin. This was confirmed using a commercial polyclonal antiserum against involucrin. We conclude that MON-150 is a new, versatile antibody against human involucrin.
authors.affiliation: Department of Biochemistry, University of Nijmegen, The Netherlands.
authors.forename: J L
authors.initials: JL
authors.lastname: van Duijnhoven
authors.forename: J
authors.initials: J
authors.lastname: Schalkwijk
authors.forename: M H
authors.initials: MH
authors.lastname: Kranenborg
authors.forename: I M
authors.initials: IM
authors.lastname: van Vlijmen-Willems
authors.forename: A
authors.initials: A
authors.lastname: Groeneveld
authors.forename: P E
authors.initials: PE
authors.lastname: van Erp
authors.forename: E D
authors.initials: ED
authors.lastname: Timmer
authors.forename: G J
authors.initials: GJ
authors.lastname: de Jongh
authors.forename: W J
authors.initials: WJ
authors.lastname: van de Ven
mesh_terms: D000911:Antibodies, Monoclonal / Q000276:immunology*; D002478:Cells, Cultured; D006801:Humans; D015603:Keratinocytes / Q000276:immunology; D008970:Molecular Weight; D011498:Protein Precursors / Q000032:analysis / Q000276:immunology*; D012867:Skin / Q000276:immunology
chemical_list: D000911:Antibodies, Monoclonal; D011498:Protein Precursors; C032253:involucrin