title: Effect of VP12 and viperistatin on inhibition of collagen-receptor-dependent melanoma metastasis.
abstract: Viperistatin and VP12 isolated from Vipera paleastinae venom showed a potent inhibitory activity against collagen receptors, alpha1beta1 and alpha2beta1 integrins, respectively. Structurally, viperistatin belongs to the disintegrin family of proteins, whereas VP12 is composed of two subunits VP12A and VP12B displaying amino acid sequence homology with heterodimeric C-lectin type proteins. Viperistatin and VP12 used separately and simultaneously inhibited pro-metastatic activities of melanoma cells lines. The level of inhibition of MV3 and HS.939T human cell lines in cell adhesion and migration assays by both compounds was correlated with expression of alpha1beta1 and alpha2beta1 integrins on the cell surface. MV3 cells express collagen receptors to much higher extent than HS.939T and required the application of higher concentrations of inhibitors to block their adhesion to collagen types I and IV. A melanoma cell transmigration assay through a dHMVEC layer revealed that alpha1beta1 integrin plays a significant role in invasion of HS.939T cells, while alpha2beta1 integrin appears to be more important for MV3 cells. In an animal model of hematogenous metastasis of the mouse B16F10 cell line, the inhibitory effect of viperistatin and VP12 was only partial. These data suggest that collagen receptors may be an interesting target for development of new anti-metastatic therapies.
authors.affiliation: Department of Biology, Temple University, College of Science and Technology, Philadelphia, PA 19122, USA.
authors.forename: Izabela
authors.initials: I
authors.lastname: Staniszewska
authors.forename: Erin M
authors.initials: EM
authors.lastname: Walsh
authors.forename: Vicki L
authors.initials: VL
authors.lastname: Rothman
authors.forename: Ariel
authors.initials: A
authors.lastname: Gaathon
authors.forename: George P
authors.initials: GP
authors.lastname: Tuszynski
authors.forename: Juan J
authors.initials: JJ
authors.lastname: Calvete
authors.forename: Philip
authors.initials: P
authors.lastname: Lazarovici
authors.forename: Cezary
authors.initials: C
authors.lastname: Marcinkiewicz
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D000970:Antineoplastic Agents / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology / Q000627:therapeutic use*; D002448:Cell Adhesion / Q000187:drug effects; D045744:Cell Line, Tumor / Q000187:drug effects / Q000473:pathology; D002851:Chromatography, High Pressure Liquid; D002852:Chromatography, Ion Exchange; D003094:Collagen / Q000502:physiology; D017124:Conserved Sequence; D004354:Drug Screening Assays, Antitumor; D006801:Humans; D039222:Integrin alpha1beta1 / Q000037:antagonists & inhibitors* / Q000502:physiology; D038982:Integrin alpha2beta1 / Q000037:antagonists & inhibitors* / Q000502:physiology; D020014:K562 Cells / Q000187:drug effects; D008175:Lung Neoplasms / Q000188:drug therapy / Q000473:pathology / Q000517:prevention & control*; D008545:Melanoma / Q000188:drug therapy / Q000473:pathology / Q000556:secondary*; D008546:Melanoma, Experimental / Q000188:drug therapy / Q000556:secondary*; D051379:Mice; D008969:Molecular Sequence Data; D009363:Neoplasm Proteins / Q000037:antagonists & inhibitors* / Q000502:physiology; D016415:Sequence Alignment; D017386:Sequence Homology, Amino Acid; D014757:Viper Venoms / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology / Q000627:therapeutic use*; D017819:Viperidae / Q000378:metabolism*
chemical_list: D000970:Antineoplastic Agents; D039222:Integrin alpha1beta1; D038982:Integrin alpha2beta1; D009363:Neoplasm Proteins; C547551:VP121 protein, Vipera paleastinae; D014757:Viper Venoms; D003094:Collagen