《生命科学》 2009, 21(4): 513-516
摘 要:摘 要:白细胞介素21(IL-21)属于I类细胞因子,主要由活化的CD4+ T产生,作用于免疫系统中的大部分骨髓、淋巴细胞,具有广泛的生物学功能,是联系主动免疫与被动免疫的中间因子。IL-21能够调节体液和细胞介导的免疫应答,促进T细胞增殖分化,调节B细胞的增殖分化与调亡,增强NK细胞的细胞毒性作用与免疫监督功能。此外,IL-21还具有抗肿瘤作用,与其他细胞因子、疫苗等联合应用,可增强其抑制肿瘤细胞生长的功能。该文综述了IL-21的生物功能及其应用于抗肿瘤治疗的研究前景。
关键词:白细胞介素21;细胞因子;免疫调节;抗肿瘤作用
Abstract: Abstract: Interleukin-21(IL-21) is a type I cytokine and mainly produced by activated CD4+ T cells. IL-21 targets a broad range of lymphoid and myeloid cells of the immune system and therefore is able to regulate innate and acquired immune responses. IL-21 has effect on T-cell activation, B-cell Ig-production, NK-cell activation. Moreover, Many researchs demonstrated that IL-21 has antitumour activity in several preclinical models. When combining IL-21 with other cytokines or drugs, the antitumour activity can be enhanced. Here, we provide an overview about the biological function of IL-21 and its prospect in cancer therapy.
Key words: IL-21; cytokine; immunoregulation; antitumour