Despite the economic impact of the infectious myonecrosis virus (IMNV) on shrimp farms in several countries, no method for immunological detection is currently available. With the aim of developing immunodiagnostic methods for IMNV detection in infected shrimps, a recombinant fragment of the IMNV major capsid protein gene encoding amino acids 105–297 (rIMNV 105–297 ) was heterologously expressed in Escherichia coli and used to immunize Balb/c mice, generating monoclonal antibodies (MAbs). Six hybridomas were obtained, and four of these recognized the presence of IMNV in tissue homogenates from naturally infected shrimps by immunodot blot assay. Among these MAbs, three were able to detect a ~100-kDa protein, which corresponds to the predicted mass of the IMNV major capsid protein, as well as viral inclusion bodies in muscle fibroses by western blot and immunohistochemistry. Two MAbs showed high specificity and sensitivity, showing no cross-reaction with healthy shrimp tissues in any assays, indicating their usefulness for IMNV detection.
Archives of Virology – Springer Journals
Published: Jan 1, 2011
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