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Immunochemical and biological characterization of monoclonal antibodies against BaP1, a metalloproteinase from Bothrops asper snake venom

artículo científico
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299_2010_Toxicon_Fernandes_BaP1_monoclonals.pdf (330.6Kb)
Date
2010-11
Author
Fernandes, Irene
Assumpção, G. G.
Silveira, C. R. F.
Faquim Mauro, E. L.
Tanjoni, Isabelle
Carmona, A. K.
Alves, M. F. M.
Takehara, Harumi Ando
Rucavado Romero, Alexandra
Ramos, O. H. P.
Moura Da Silva, Ana M.
Gutiérrez, José María
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Abstract
BaP1 is a P-I class of Snake Venom Metalloproteinase (SVMP) relevant in the local tissue damage associated with envenomations by Bothrops asper, a medically-important species in Central America and parts of South America. Six monoclonal antibodies (MoAb) against BaP1 (MABaP1) were produced and characterized regarding their isotype, dissociation constant (Kd), specificity and ability to neutralize BaP1-induced hemorrhagic and proteolytic activity. Two MABaP1 are IgM, three are IgG1 and one is IgG2b. The Kds of IgG MoAbs were in the nM range. All IgG MoAbs recognized conformational epitopes of BaP1 and B. asper venom components but failed to recognize venoms from 27 species of Viperidae, Colubridae and Elapidae families. Clone 7 cross-reacted with three P-I SVMPs tested (moojeni protease, insularinase and neuwiedase). BaP1-induced hemorrhage was totally neutralized by clones 3, 6 and 8 but not by clone 7. Inhibition of BaP1 enzymatic activity on a synthetic substrate by MABaP1 was totally achieved by clones 3 and 6, and partially by clone 8, but not by clone 7. In conclusion, these neutralizing MoAbs against BaP1 may become important tools to understand structure–function relationships of BaP1 and the role of P-I class SVMP in snakebite envenomation.
URI
https://hdl.handle.net/10669/29320
External link to the item
10.1016/j.toxicon.2010.07.014
http://www.sciencedirect.com/science/article/pii/S0041010110002953
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  • Repositorios universitarios

  • Repositorio del SIBDI-UCR
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  • Biblioteca Digital Carlos Melendez (CIHAC)
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Repositorio Institucional de la Universidad de Costa Rica. Algunos derechos reservados. Este repositorio funciona con DSpace.