Department of Pathology, Singapore General Hospital, Singapore 169608;
J Immunol. 2013 Dec 1;191(11):5603-14. doi: 10.4049/jimmunol.1301175. Epub 2013 Nov 1.
Central memory T lymphocytes were reported to develop after acute but not chronic infection, which prompted this feasibility study on generating long-term CD8 T cells ex vivo, by applying a culture condition that simulates an acute infection. During 35 d of culture, naive T cells (CD45RA(+), CD127(+), CCR7(+), CD62L(+), CXCR3(+)) first developed into effector T cells (CD45RA(+/-), CD127(+/-), CCR7(+/-), CD62L(+), CXCR3(+)), followed by three intermediate stages: intermediate T cells 1 (CD45RO(+), CD127(+/-), CCR7(+), CD62L(+), CXCR3(+)), intermediate T cells 2 (CD45RO(+), CD127(-), CCR7(-), CD62L(+), CXCR3(+)), and intermediate T cells 3 (CD45RO(+/-), CD127(+), CCR7(+), CD62L(-), CXCR3(+)) before reverting to stable CD45RA(+) central memory T cells (CD45RA(+), CD127(+), CCR7(+), CD62L(+), CXCR3(+)). If both anti-CD3 and the inflammatory milieu persisted beyond day 10, intermediate T cells 2 gradually developed into effector memory T cells (CD45RO(+), CD127(-), CCR7(-), CD62L(-), CXCR3(+)). Furthermore, intermediate T cells 2 or effector memory T cells, when cultured in persistent inflammatory cytokines devoid of anti-CD3, were converted to central memory T cells (CD45RO(+), CCR7(+), CD62L(+)). Overall, these results support ex vivo memory-like T lymphocyte production and favor a developmental pathway including both divergent and linear relationships.
中央记忆 T 细胞被报道在急性感染后而不是慢性感染后发展,这促使我们进行了这项可行性研究,即在模拟急性感染的培养条件下,体外产生长期的 CD8 T 细胞。在 35 天的培养过程中,初始 T 细胞(CD45RA(+)、CD127(+)、CCR7(+)、CD62L(+)、CXCR3(+))首先发育为效应 T 细胞(CD45RA(+/-)、CD127(+/-)、CCR7(+/-)、CD62L(+)、CXCR3(+)),随后经历三个中间阶段:中间 T 细胞 1(CD45RO(+)、CD127(+/-)、CCR7(+)、CD62L(+)、CXCR3(+))、中间 T 细胞 2(CD45RO(+)、CD127(-)、CCR7(-)、CD62L(+)、CXCR3(+))和中间 T 细胞 3(CD45RO(+/-)、CD127(+)、CCR7(+)、CD62L(-)、CXCR3(+)),然后恢复为稳定的 CD45RA(+)中央记忆 T 细胞(CD45RA(+)、CD127(+)、CCR7(+)、CD62L(+)、CXCR3(+))。如果抗 CD3 和炎症环境持续存在超过第 10 天,中间 T 细胞 2 逐渐发育为效应记忆 T 细胞(CD45RO(+)、CD127(-)、CCR7(-)、CD62L(-)、CXCR3(+))。此外,当中间 T 细胞 2 或效应记忆 T 细胞在缺乏抗 CD3 的持续炎症细胞因子中培养时,它们被转化为中央记忆 T 细胞(CD45RO(+)、CCR7(+)、CD62L(+))。总的来说,这些结果支持体外记忆样 T 淋巴细胞的产生,并支持一个包括发散和线性关系的发育途径。