Malek T R, Ashwell J D
J Exp Med. 1985 Jun 1;161(6):1575-80. doi: 10.1084/jem.161.6.1575.
Stimulation of a class II-restricted, antigen-specific T cell clone with interleukin 2 (IL-2) resulted in substantial increases in both cell surface IL-2 receptor (IL-2-R) and cytoplasmic IL-2-R messenger RNA (mRNA), whereas no increase was observed for cell-surface expression of Thy-1 and L3T4 antigens, and only a modest increase in Thy-1 mRNA was observed. These experiments demonstrate that, after initial acquisition of the IL-2-R, IL-2 as well as antigen is able to directly upregulate both the level of IL-2-R mRNA and cell surface IL-2-R molecules.
用白细胞介素2(IL-2)刺激一个受II类分子限制的、抗原特异性T细胞克隆,导致细胞表面IL-2受体(IL-2-R)和细胞质IL-2-R信使核糖核酸(mRNA)都大幅增加,而Thy-1和L3T4抗原的细胞表面表达未增加,仅观察到Thy-1 mRNA有适度增加。这些实验表明,在最初获得IL-2-R后,IL-2以及抗原能够直接上调IL-2-R mRNA水平和细胞表面IL-2-R分子。