De Libero G, Lanzavecchia A
Basel Institute for Immunology, Switzerland.
J Exp Med. 1989 Jul 1;170(1):303-8. doi: 10.1084/jem.170.1.303.
Human thymocytes were sorted according to the expression of CD4 and CD8 molecules and clones representing the four subpopulations (DP, DN, and single CD4 or CD8 positive) were established. DP clones can be maintained for long periods in tissue culture and give rise to a variable percentage of SP variants. These variants, when isolated and further expanded, do not revert to a DP phenotype. DP clones express a functional TCR-CD3 complex, suggesting that this molecule can interact with the thymic microenvironment during T cell differentiation.
根据CD4和CD8分子的表达对人胸腺细胞进行分选,并建立了代表四个亚群(双阳性、双阴性以及单一CD4或CD8阳性)的克隆。双阳性克隆可在组织培养中长时间维持,并产生不同比例的单阳性变体。这些变体分离并进一步扩增后,不会恢复为双阳性表型。双阳性克隆表达功能性TCR-CD3复合物,表明该分子在T细胞分化过程中可与胸腺微环境相互作用。