Ladel C H, Szalay G, Riedel D, Kaufmann S H
Department of Immunology, University of Ulm, Germany.
Infect Immun. 1997 May;65(5):1936-8. doi: 10.1128/iai.65.5.1936-1938.1997.
Infection with Mycobacterium tuberculosis or phagocytosis of large latex beads induced interleukin-12 (IL-12) production in macrophages. In contrast, tumor necrosis factor (TNF) was produced only in response to M. tuberculosis infection, not after phagocytosis of latex beads. Comparable results were obtained with cells from immunocompetent C57BL/6 and gamma interferon receptor-deficient mutant mice. Thus, phagocytosis by mechanisms not specific for M. tuberculosis was a sufficient trigger for IL-12 secretion, emphasizing the central role of this cytokine in the initiation of anti-infective immunity.
结核分枝杆菌感染或巨噬细胞吞噬大乳胶珠可诱导白细胞介素-12(IL-12)产生。相比之下,肿瘤坏死因子(TNF)仅在结核分枝杆菌感染时产生,而在吞噬乳胶珠后不产生。免疫功能正常的C57BL/6小鼠和γ干扰素受体缺陷型突变小鼠的细胞也得到了类似结果。因此,通过非特异性针对结核分枝杆菌的机制进行吞噬是IL-12分泌的充分触发因素,这强调了这种细胞因子在抗感染免疫启动中的核心作用。