Monoclonal antibodies 2F6/8 and 2A10/8 recognize a porcine antigen (SWC7) expressed on B cells and activated T cells

This report describes the production and characterization of two monoclonal antibodies (mAbs), 2F6/8 and 2A10/8, that recognize a porcine antigen (SWC7) expressed on B cells in lymphoid tissues. The antigen was not detectable on resting PBMC but its expression could be induced after treatment with phorbol esters (PMA) but not by ConA, PWM, LPS or Ca ionophore. Kinetic studies showed that the antigen was expressed 24 h after PMA treatment, peaked at day 2 or 3 and slightly declined by day 6. Interestingly, the antigen was also found on a subset of CD3 + T cells, with levels of expression similar to those of B cells. By immunohistochemistry, the antigen was detected on follicular dendritic cells of germinal centers in tonsils, spleen, lymph nodes and Peyer's patches. MAb 2F6/8 precipitates a molecule of approximately 40 kDa under non-reducing conditions, and 24 kDa under reducing conditions. The restricted and tightly regulated expression of this antigen may reflect an important role in B cell differentiation within the germinal center. These mAbs will be useful reagents for phenotypic analysis of porcine lymphoid cell populations by flow cytometry and immunohistochemistry.

Bibliographic Details

Main Authors:	Bullido, R., Doménech, N., Gómez del Moral, M., Alonso, F., Ezquerra, A., Domínguez, J.
Format:	journal article biblioteca
Language:	eng
Published:	1999
Online Access:	http://hdl.handle.net/20.500.12792/4896
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