Biology of Reproduction, Vol 40, 453-457, Copyright © 1989 by Society for the Study of Reproduction

ARTICLES

Interferon-gamma induction of major histocompatibility complex antigens on cultured bovine luteal cells

DL Fairchild and JL Pate
Department of Dairy Science, Ohio State University, Columbus 43210-1094.

To investigate immunological mechanisms that may be involved in luteal function, the presence of Class I and Class II major histocompatibility complex (MHC) antigens on cultured bovine luteal cells was examined. After 72 h in serum-free culture, Class I antigens were markedly expressed on luteal cells, as determined by indirect immunofluorescence, whereas expression of Class II antigens was limited. The expression of MHC antigens on luteal cells was increased by treatment with the T-lymphocyte factor, interferon-gamma (IFN- gamma). Class I and II antigens were elevated 25% and 370% above controls, respectively, after IFN-gamma exposure. Since the corpus luteum is regulated by luteinizing hormone (LH), luteal cells were treated with either hormone alone or hormone in addition to IFN-gamma, and antigen expression was determined. LH treatment attenuated IFN- gamma-induction of Class II antigens on bovine luteal cells. These observations are the first to demonstrate the presence of MHC antigens on bovine luteal cells and the modulation of antigen expression by the lymphokine IFN-gamma and by LH.

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