Production and characterization of a polyclonal antibody against rabies virus phosphoprotein

Nadia Yadira Castañeda, Jacqueline Chaparro-Olaya, Jaime E. Castellanos, .

Keywords: rabies virus, immunochemistry, phosphoproteins, recombinant proteins, Escherichia coli

Abstract

Introduction. The expression of recombinant viral proteins has been a useful tool to study molecular biology and pathogenesis of virus infections. Because commercial specific antibodies to rabies virus phosphoprotein (P) are currently unavailable, these antibodies must be generated de novo in order to study the role of P protein during the infectious process.
Objective. A polyclonal antibody was produced and characterized for use against the phosphoprotein (P) of rabies virus. The antibody was raised in rabbits with a recombinant viral phosphoprotein (P) produced in Escherichia coli.
Materials and methods. Gene P coding for the viral phosphoprotein (P) was amplified by RTPCR and cloned into the expression vector PinPointTM Xa-1 T. The recombinant protein P was expressed in Escherichia coli, purified by affinity chromatography and used to produce a polyclonal antibody anti-P. The antibody anti-P was purified and characterized by immunocytochemistry, immunofluorescence, fluorometric CELL-ELISA and Western blotting.
Results. The recombinant viral phosphoprotein was successfully expressed as a 50 kd biotinylated fusion protein which corresponds to the whole protein P of rabies virus. The polyclonal antibody raised against this recombinant protein P was able to detect with high specificity, protein P in cultures of sensorial neurons infected with rabies virus.
Conclusions. The P protein obtained from heterologous expression in Escherichia coli became a specific antigen that was used to produce a polyclonal antibody capable of detecting native P protein in rabies virus infected cells.

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  • Nadia Yadira Castañeda Instituto de Virología, Universidad El Bosque, Bogotá, D. C., Colombia Laboratorio de Neurociencias, Instituto Nacional de Salud, Bogotá, D. C., Colombia
  • Jacqueline Chaparro-Olaya Laboratorio de Parasitología Molecular, Universidad El Bosque, Bogotá, D. C., Colombia Laboratorio de Bioquímica, Instituto Nacional de Salud, Bogotá, D. C., Colombia
  • Jaime E. Castellanos Instituto de Virología, Universidad El Bosque, Bogotá, D. C., Colombia Laboratorio de Neurociencias, Instituto Nacional de Salud, Bogotá, D. C., Colombia

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How to Cite
1.
Castañeda NY, Chaparro-Olaya J, Castellanos JE. Production and characterization of a polyclonal antibody against rabies virus phosphoprotein. biomedica [Internet]. 2007 Jun. 1 [cited 2024 May 17];27(2):257-67. Available from: https://revistabiomedica.org/index.php/biomedica/article/view/221

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