Abstract：
:Five monoclonal antibodies (MoAbs) against Indian reference/vaccine strain of foot-and-mouth disease (FMD) virus subtype A22 (IND17/77) and a guinea pig antibody against a synthetic peptide representing amino acids (aa) 136-151 of VP1 polypeptide of A22 virus were used in the study. All the antibodies either failed to react or showed a reduced reactivity with trypsin-treated (TT)-146 S virus particles in enzyme-linked immunosorbent assay (ELISA), and could neutralize the infectivity of the reference virus. The antibodies were hence identified as specific to a trypsin-sensitive neutralizable antigenic site of the virus. Using the antibodies we isolated mutants which showed either no or reduced reactivity with the homologous as well as heterologous antibodies in ELISA. The mutants could not be neutralized with the respective antibodies but were efficiently neutralized with the serum from vaccinated cattle (BVS). These results indicated that the antibodies elicited in cattle following vaccination protected them adequately against the mutants selected and that the trypsin-sensitive neutralizable antigenic site of FMD A22 virus as identified by the MoAbs may not be dominant in eliciting a neutralizing antibody response in vaccinated cattle.
journal_name
Acta Viroljournal_title
Acta virologicaauthors
Das BR,Pattnaik B,Venkataramanan R,Rai DVsubject
Has Abstractpub_date
1997-06-01 00:00:00pages
131-8issue
3eissn
0001-723Xissn
1336-2305journal_volume
41pub_type
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