Expression of an antiviral protein from Lonomia obliqua hemolymph in baculovirus/insect cell system

Autor(es)

Carmo, A. C. V. ^{[1, 2, 3]} ; Giovanni, D. N. S. ^{[1, 2]} ; Correa, T. P. ^[3] ; Martins, L. M. ^[2] ; Stocco, R. C. ^[1] ; Suazo, C. A. T. ^[3] ; Moraes, R. H. P. ^[2] ; Veiga, A. B. G. ^[4] ; Mendonca, R. Z. ^[2]

Afiliação do(s) autor(es)

^[1] Inst Butantan, Genet Lab, BR-05503900 Sao Paulo - Brazil

^[2] Inst Butantan, Parasitol Lab, BR-05503900 Sao Paulo - Brazil

^[3] Univ Fed Sao Carlos, Dept Engn Quim, Lab Tecnol Cult Celular, Sao Carlos, SP - Brazil

^[4] UFCSPA, Dept Ciencias Basicas Saude, Porto Alegre, RS - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Antiviral Research; v. 94, n. 2, p. 126-130, MAY 2012.
• Citações Web of Science: 9

Resumo

The control of viral infections, mainly those caused by influenza viruses, is of great interest in Public Health. Several studies have shown the presence of active properties in the hemolymph of arthropods, some of which are of interest for the development of new pharmacological drugs. Recently, we have demonstrated the existence of a potent antiviral property in the hemolymph of Lonomia obliqua caterpillars. The aim of this study was to produce an antiviral protein in a baculovirus/Sf9 cell system. The resulting bacmid contains the sequence coding for the antiviral protein previously described by our group. Total RNA from L. obliqua caterpillars was extracted with Trizol and used in the reverse transcription assay with oligo(d)T primer followed by polymerase chain reactions (RT-PCR) with specific primers for the cDNA coding for the antiviral protein, based on the sequence deposited in the GenBank database. Restriction sites were inserted in the cDNA for ligation in the donor plasmid pFastBac1 (TM). The recombinant plasmid was selected in Escherichia coli DH5 alpha and subsequently used in the transformation of E. coli DH10Bac for the construction of the recombinant bacmid. This bacmid was used for the expression of the antiviral protein in the baculovirus/Sf9 cell system. After identifying the protein by western blot, activity tests were performed, showing that the purified recombinant protein was able to significantly reduce viral replication (about 4 logs). Studies on the optimization of the expression system for the production of this antiviral protein in insect cells are in progress. (C) 2011 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 08/57263-5 - Expressão de proteínas de interesse comercial obtida da hemolinfa de Lonomia obliqua em sistema de células de inseto/Baculovirus
• Beneficiário: Ronaldo Zucatelli Mendonca
• Modalidade de apoio: Auxílio à Pesquisa - Regular