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Differential modulation of leucocyte surface antigens by various inducers on the T-cell line MOLT-4
B Chorváth1, J Sedlák, P Dubovský
1Cancer Research Institute, Slovak Academy of Sciences, Bratislava.
Folia Biologica
|January 1, 1991
Abstract:
Pretreatment of MOLT-4 T-cell line with 12-0-tetradecanoylphorbol 13-acetate (TPA) potentiated the interferon alpha-induced cell surface expression of class I HLA. Simultaneous combined action of TPA and rIFN-alpha resulted in a synergistic effect upon the up-regulation of class I HLA. Neither TPA nor rIFN modulated the cell surface expression of HLA class II (DR and DP) antigens. Leucocyte common antigen (CD45) cell surface expression was quantitatively increased on MOLT-4 cells by TPA induction, unaltered by rIFN and up-regulated by combined action of TPA and rIFN. CD8 antigen was down-regulated by both TPA and rIFN.