CD28 Antibody [CD28.2] (APC)

The CD28.2 monoclonal antibody specifically binds with the human 44 kDa homodimeric trans-membrane glycoprotein CD28, expressed on the surface of most mature T lymphocytes, plasma cells, and thymocytes. CD28 is a ligand for B7-1 (CD80) and B7-2 (CD86), a co-stimulator of T lymphocytes, and enhances the interaction between T and B lymphocytes. It has been reported that the T lymphocytes stimulation to produce IL-2 depends on the monoclonal antibody involved, which suggests that the CD28 molecule presents some subregions with distinct functions. The CD28.2 antibody induces Ca2+ influx in Jurkat T lymphocytes. Other studies have shown that CD28 is involved in the signal transduction.

The CD28.2 monoclonal antibody specifically binds with the human 44 kDa homodimeric trans-membrane glycoprotein CD28, expressed on the surface of most mature T lymphocytes, plasma cells, and thymocytes.

Nandi, D., Gross, J. A., Allison, J. P. (1994) . CD28-mediated costimulation is necessary for optimal proliferation of murine NK cells.The Journal of Immunology,152 (7), 3361-3369.

Gross, J. A., Callas, E. L. E. N. I., Allison, J. P. (1992) . Identification and distribution of the costimulatory receptor CD28 in the mouse.The Journal of Immunology,149 (2), 380-388.

Grossi, J. A., Raulet, D. H., Allison, J. P. (1992) . CD28-mediated signalling co-stimulates murine T cells and prevents induction of anergy in T-cell clones.Nature,356, 607-9.

Nishio, M., Spielman, J., Lee, R. K., Nelson, D. L., Podack, E. R. (1996) . CD80 (B7. 1) and CD54 (intracellular adhesion molecule-1) induce target cell susceptibility to promiscuous cytotoxic T cell lysis.The Journal of Immunology,157 (10), 4347-4353.