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Application of a monoclonal antibody recognizing protein p30 to detect African swine fever virus-infected cells in peripheral blood



Application of a monoclonal antibody recognizing protein p30 to detect African swine fever virus-infected cells in peripheral blood



Journal of Virological Methods 55(3): 339-345



Monoclonal antibody (MAb) 174F11.8 recognizes an epitope of the African swine fever (ASF) virus-induced protein, p30, a protein expressed on the plasma membrane of infected cells. This MAb has been used to analyze infected cell populations in peripheral blood of experimentally inoculated pigs with a virulent or attenuated ASF virus. Flow cytometric analysis of peripheral blood at different days postinfection using this MAb, showed expression of p30 mainly in the monocyte/macrophage cell lineage. Additionally, a small percentage of granulocytes also expressed p30 during infection. This methodology allowed the quantification of fluctuations in the pool of infected monocyte/macrophage cells in the inoculated pigs, maximum percentages ranging between 6 and 31%. Significant differences in the percentages of cell populations expressing p30 were not found between virulent or attenuated virus infection. However, a 2- to 4-day delay in the maximum percentage of cells expressing p30 was observed during infection with the attenuated virus when compared to virulent virus infection. Percentages of infected cells detected by the expression of p30 and viral titres obtained in peripheral blood showed positive correlation. Consequently, MAb 174F11.8 constitutes a marker to follow evolution of ASF virus infection, allowing quantification of percentages of infected cells in peripheral blood.

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Accession: 045289492

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PMID: 8609199

DOI: 10.1016/0166-0934(95)00071-1


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