Production of recombinant NS1 protein and its possible use in encephalitic flavivirus differential diagnosis
Autor: | María Soledad Collado, Matías Sebastián Lorch, R. P. Rota, Mario Enrique Lozano, Lorena Spinsanti, Sandra Elizabeth Goñi, Marcelo Horacio Argüelles |
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Rok vydání: | 2018 |
Předmět: |
0106 biological sciences
viruses NS1 Encephalitis Virus St. Louis Gene Expression Viral Nonstructural Proteins Antibodies Viral 01 natural sciences Chromatography Affinity law.invention Serology Mice law Antibody Specificity Cloning Molecular Antigens Viral Inclusion Bodies 0303 health sciences biology medicine.diagnostic_test virus diseases SEROLOGICAL DIAGNOSIS Recombinant Proteins Flavivirus Saint Louis encephalitis Recombinant DNA Antibody West Nile virus CIENCIAS NATURALES Y EXACTAS Biotechnology Blotting Western Genetic Vectors Argentina Cross Reactions Virus Ciencias Biológicas Diagnosis Differential 03 medical and health sciences Western blot 010608 biotechnology medicine Escherichia coli Animals Humans 030304 developmental biology Encephalitis St. Louis SAINT LOUIS ENCEPHALITIS VIRUS biochemical phenomena metabolism and nutrition biology.organism_classification medicine.disease Virology WEST NILE VIRUS Solubility Polyclonal antibodies biology.protein RECOMBINANT PROTEIN Virología West Nile Fever |
Zdroj: | Protein expression and purification. 153 |
ISSN: | 1096-0279 |
Popis: | Saint Louis encephalitis virus (SLEV) and West Nile virus (WNV) are two of the major causes of arboviral encephalitis in the Americas. The co-circulation of related flaviviruses in the Americas and prior vaccination against flaviviruses pose problems to the diagnostic specificity of serological assays due to the development of cross-reactive antibodies. An accurate diagnosis method capable of differentiating these related viruses is needed. NS1 is a glycosylated, nonstructural protein, of about 46 kDa which has a highly conserved structure. Anti-NS1 antibodies can be detected within 4?8 days after the initial exposure and NS1 is the least cross-reactive of the flaviviral antigens. This study was aimed to generate SLEV and WNV NS1 recombinants proteins for the development of a flavivirus diagnostic test. Local Argentinian isolates were used as the source of NS1 gene cloning, expression, and purification. The protein was expressed in Escherichia coli as inclusion bodies and further purified by metal-chelating affinity chromatography (IMAC) under denaturing conditions. Human sera from SLEV and WNV positive cases showed reactivity to the recombinant NS1 proteins by western blot. The unfolded NS1 proteins were also used as immunogens. The polyclonal antibodies elicited in immunized mice recognized the two recombinant proteins with differential reactivity. Fil: Lorch, Matías Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Ingeniería Genética y Biología Molecular y Celular; Argentina Fil: Collado, Maria Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Inmunología, Genética y Metabolismo. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Inmunología, Genética y Metabolismo; Argentina. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Ingeniería Genética y Biología Molecular y Celular; Argentina Fil: Argüelles, Marcelo Horacio. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Rota, Rosana Paola. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Ingeniería Genética y Biología Molecular y Celular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Spinsanti, Lorena Ivana. Universidad Nacional de Córdoba. Facultad de Medicina. Instituto de Virología Dr. J. M. Vanella; Argentina Fil: Lozano, Mario Enrique. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Ingeniería Genética y Biología Molecular y Celular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Goñi, Sandra Elizabeth. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Ingeniería Genética y Biología Molecular y Celular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina |
Databáze: | OpenAIRE |
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