Swain Susan, Clise-Dwyer Karen, Haynes Laura
Trudeau Institute, 154 Algonquin Ave., Saranac Lake, NY 12983, USA.
Semin Immunol. 2005 Oct;17(5):370-7. doi: 10.1016/j.smim.2005.05.007.
Survival and homeostatic division of naive CD4 T cells is regulated by the cellular and non-cellular milieu and together these processes ensure that a population of naive CD4 T cells persists into old age. However, the naive CD4 T cells from aged animals show reduced IL-2 production, proliferation, helper function and effector generation and memory function. We explore here whether the age-related defects in naive CD4 T cells are due to the aged environment from which they come or to intrinsic defects that are caused by homeostasis and their long lifespan.
初始CD4 T细胞的存活和稳态分裂受细胞和非细胞环境调节,这些过程共同确保初始CD4 T细胞群体持续存在至老年。然而,老年动物的初始CD4 T细胞表现出白细胞介素-2产生减少、增殖能力下降、辅助功能及效应细胞生成和记忆功能受损。我们在此探讨初始CD4 T细胞中与年龄相关的缺陷是由于其所处的衰老环境,还是由于稳态及它们较长的寿命所导致的内在缺陷。