IFN-γ是一种多效能的细胞因子 ,具有抗病毒、非病毒性病原体 ,抑制肿瘤细胞增殖和调节免疫反应等功能。IFN-γ可诱导细胞合成多种蛋白质和酶 ,其中某些产物被认为与其抗感染活性有关 ,如一氧化氮合酶 (NOS)、吲哚胺 2 ,3过氧化酶 (IDO)等。IDO是催化色氨酸降解的酶 ,而色氨酸 IFN-γ is a multi-functional cytokine that has antiviral, non-viral pathogens, inhibits tumor cell proliferation and modulates immune responses. IFN-γ induces cells to synthesize a variety of proteins and enzymes, some of which are believed to be involved in their anti-infective activity, such as nitric oxide synthase (NOS), indoleamine 2,3 peroxidase (IDO) and the like. IDO is an enzyme that catalyzes tryptophan degradation, while tryptophan