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Viruses ; 8(6)2016 06 07.
Article in English | MEDLINE | ID: mdl-27338444

ABSTRACT

The aim of this work was to evaluate the immunogenicity and neutralizing activity of sheep pox virus (SPPV; genus Capripoxvirus, family Poxviridae) structural proteins as candidate subunit vaccines to control sheep pox disease. SPPV structural proteins were identified by sequence homology with proteins of vaccinia virus (VACV) strain Copenhagen. Four SPPV proteins (SPPV-ORF 060, SPPV-ORF 095, SPPV-ORF 117, and SPPV-ORF 122), orthologs of immunodominant L1, A4, A27, and A33 VACV proteins, respectively, were produced in Escherichia coli. Western blot analysis revealed the antigenic and immunogenic properties of SPPV-060, SPPV-095, SPPV-117 and SPPV-122 proteins when injected with adjuvant into experimental rabbits. Virus-neutralizing activity against SPPV in lamb kidney cell culture was detected for polyclonal antisera raised to SPPV-060, SPPV-117, and SPPV-122 proteins. To our knowledge, this is the first report demonstrating the virus-neutralizing activities of antisera raised to SPPV-060, SPPV-117, and SPPV-122 proteins.


Subject(s)
Antibodies, Neutralizing/blood , Antibodies, Viral/blood , Capripoxvirus/immunology , Recombinant Proteins/immunology , Viral Structural Proteins/immunology , Viral Vaccines/immunology , Adjuvants, Immunologic/administration & dosage , Animals , Blotting, Western , Capripoxvirus/genetics , Cell Line , Escherichia coli/genetics , Escherichia coli/metabolism , Gene Expression , Neutralization Tests , Rabbits , Recombinant Proteins/genetics , Sheep , Vaccines, Subunit/administration & dosage , Vaccines, Subunit/immunology , Viral Plaque Assay , Viral Structural Proteins/genetics , Viral Vaccines/administration & dosage
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