Journal
VACCINE
Volume 19, Issue 32, Pages 4816-4823Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S0264-410X(01)00210-9
Keywords
Peste des petits ruminants; hemagglutinin-neuraminidase; immune responses
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Peste des petits ruminants virus (PPRV), a member of the genus Morbillivirus within the family Paramyxoviridae, causes a fatal disease 'peste des petits ruminants' in goats and sheep. This enveloped virus is antigenically closely related to rinderpest virus (RPV), which causes a similar but distinct disease in large ruminants. PPRV harbors two major surface glycoproteins, the hemagglutinin-neuraminidase (HN) and the fusion (F) proteins. The surface glycoproteins of morbilliviruses are highly immunogenic and confer protective immunity. In this study, we investigated the immune responses generated in goats immunized with low doses of purified recombinant extracellular baculovirus carrying a membrane bound form of the HN protein of PPRV without any adjuvant. We report that the immunized goats develop both humoral and cell-mediated immune responses. Antibodies generated in the immunized animals could neutralize both PPRV and RPV in vitro. Further, using a combination of Escherichia coli expressed deletion mutants of PPRV-HN and RPV-H proteins, and synthetic peptides corresponding to the highly conserved N-terminal sequences of MV-H protein, we have mapped an N-terminal T cell determinant (amino acids 123-137) and a C-terminal domain (amino acids 242-609) harboring potential T cell determinant(s) in goats. (C) 2001 Elsevier Science Ltd. All rights reserved.
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