A novel gene associated with Retinoid-IFN-induced Mortality (GRIM) GRIM-19 gene was identified. Antisense expression of GRIM-19 confers a strong resistance against IFN/RA-induced death by reducing the intracellular levels of GRIM-19 protein. Overexpression of GRIM-19 enhances cell death in response to IFN/RA. GRIM-19 is primarily a nuclear protein whose expression is induced by the IFN/RA combination. These data indicate that GRIM-19 is a novel cell death-regulatory molecule.
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