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Generation and Characterization of Monoclonal Antibodies Against the E6 and E7 Oncoproteins of HPV

A.P. Wlazlo, W. Giles-Davis, A. Clements, G. Struble, R. Marmorstein,
Published: 1 August 2001

Abstract: Generation of three monoclonal antibodies (MAbs) to the major oncoproteins of human papillomavirus (HPV) was accomplished by an intense prime/boost regimen. Mice were primed with expression vectors expressing either the E6 or E7 oncoproteins of HPV-16 followed by boosting with a vaccinia virus construct and a replication-defective E1-deleted adenoviral recombinant of the human strain 5, and last, with baculovirus-derived HPV-16 E6 and E7 proteins in incomplete Freunds' adjuvant. Splenocytes were then fused with a myeloma cell line. The vaccination protocol generated one anti-E7 MAb of the IgM isotype and two anti-E6 MAbs of the IgG1 subisotype. The MAbs were tested for functionality in standard laboratory assays and found to detect the E6 and E7 proteins, respectively. The E7 MAb cross-reacted with the HPV-1a E7 oncoprotein. The binding sites of the MAbs were mapped to defined regions of each viral protein.
Keywords: monoclonal antibody

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