摘要肿瘤坏死因子α诱导蛋白8(TNFAIP8)家族是近年来发现的一组新蛋白,哺乳动物中该家族包括结构上具有高度同源性的4个成员,即TNFAIP8样分子(TIPE)、TIPE1、TIPE2和TIPE3.这些成员的结构、功能既有共性又有个性,涉及炎症、免疫、肿瘤、卒中、血管发生等多种疾病的病理生理过程.研究显示,TIPE2具有免疫负向调控功能,促进其表达可减轻脓毒性休克时过度炎症反应,维持巨噬细胞、中性粒细胞、树突细胞、T细胞、B细胞等免疫应答反应.本文通过对TIPE2分子的结构特点、功能意义及其免疫调节机制进行综述,旨在为相关疾病的免疫调理开辟新途径.

abstractsThe tumor necrosis factor-α-induced protein 8-like (TNFAIP8, TIPE) family is recently identified proteins consisting of four highly homologous mammalian proteins: TIPE, TIPE1, TIPE2, and TIPE3. Although the four members share similar molecular structure and function, involving effects in pathophysiological processes of inflammation, immunity, tumors, stroke, angiogenesis, and other diseases, they have individual characteristics. Many studies have shown that TIPE2 is an essential negative regulator of both innate and adaptive immunity. Up-regulation of TIPE2 expression can alleviate excessive inflammation during septic shock and maintain hemostasis of macrophages, neutrophils, dendritic cells, T cells, and B cells. In this review, we summarize the current literature for structure feature, immune function, and regulatory mechanism of TIPE2, together with its clinical significance in the pathogenesis of immune disorders of a wide array of human diseases. Understanding the basic biology of this new molecule might help us to seek novel strategies for the immunomodulation of human diseases.