The Journal of Immunology, Vol 144, Issue 12 4670-4674, Copyright © 1990 by American Association of Immunologists

ARTICLES

IL-4 and granulocyte-macrophage colony-stimulating factor selectively increase HLA-DR and HLA-DP antigens but not HLA-DQ antigens on human monocytes

TL Gerrard, DR Dyer and HS Mostowski
Division of Cytokine Biology, Center for Biologics Evaluation and Research, Food and Drug Administration, Bethesda, MD 20892.

A number of cytokines were tested for their ability to modulate HLA-DR Ag expression on normal human monocytes. IL-4, granulocyte-macrophage (GM)-CSF as well as IFN-gamma were able to increase HLA-DR Ag expression on monocytes. IFN-alpha was also able to augment HLA-DR Ag expression, but to a lesser degree. Macrophage-CSF, granulocyte-CSF, TNF-alpha, TNF-beta, and IL-6 were not able to augment HLA-DR Ag expression. There were distinct patterns in the ability of different cytokines to augment class II histocompatibility Ag expression. IL-4 and GM-CSF selectively increased only HLA-DR and HLA-DP, but did not increase HLA-DQ antigens on monocytes. IFN-gamma, however, was able to augment the expression of HLA-DR, HLA-DP, and HLA-DQ Ag. Combinations of IFN-gamma with either IL-4 or GM-CSF did not show any synergy for the augmentation of any of the class II antigens on monocytes.

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