PMID: 2493701Mar 1, 1989Paper

Relationship between inducible H-2 expression and the immunogenicity of murine skin neoplasms. I. Evidence that the immunogenicity of ultraviolet radiation-chemically induced tumors is associated with their susceptibility to gamma-interferon-mediated enhancement of H-2Kk expression

Transplantation
D K BurnhamR A Daynes

Abstract

Our objective was to determine the relationship between major histocompatibility complex class I molecule expression and the tumorigenic properties of cutaneous neoplasms induced by ultraviolet radiation or chemical carcinogens. All tumors tested were found to express low constitutive levels of MHC class I molecules in vitro as determined by indirect immunofluorescence and flow cytometry. Those tumors capable of growth in UVR-exposed but not in normal recipients (regressors) were found to express enhanced levels of H-2Kk following incubation in the presence of gamma-IFN. In contrast, only one of the tumors that were capable of growth in normal recipients (progressors) exhibited more than moderate enhancement of H-2Kk expression in response to gamma-IFN. Analysis of tumor variants obtained by conversion of a UVR-induced regressor tumor to the progressor phenotype by passage through sublethally gamma-irradiated hosts, or the generation of regressor tumors by mutagen exposure of a benz [A] pyrene (BAP) induced progressor tumor, further supported the direct relationship between tumor immunogenicity in vivo and the capacity to elevate H-2Kk expression in response to gamma-IFN. No correlation existed between H-2Dk expression by the t...Continue Reading

Citations

Mar 1, 1995·Photochemistry and Photobiology·R S ChapmanF Noonan
Sep 1, 1991·American Journal of Respiratory Cell and Molecular Biology·T I ChristmasM J Garlepp

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