Homeostatic division is not necessary for antigen-specific CD4+ memory T cell persistence.
Homeostatic division is not necessary for antigen-specific CD4+ memory T cell persistence.
复制标题
DOI:
10.4049/jimmunol.1201583
复制
发表时间:
2012-10-01
期刊:
影响因子:
--
通讯作者:
Maltzman JS
中科院分区:
文献类型:
--
作者:
Corbo-Rodgers E;Wiehagen KR;Staub ES;Maltzman JS
CD4+ memory T cells are generated in response to infection or vaccination, provide protection to the host against re-infection, and persist through a combination of enhanced survival and slow homeostatic turnover. We used timed deletion of the TCR-signaling adaptor molecule SH2-domain-containing phosphoprotein of 76 kDa (SLP-76) with MHC:peptide tetramers to study the requirements for tonic TCR signals in the maintenance of polyclonal antigen-specific CD4+ memory T cells. SLP-76 deficient I-Ab:GP61 cells are unable to rapidly generate effector cytokine or proliferate in response to secondary infection. In mice infected with lymphocytic choriomeningitis virus (LCMV) or Listeria monocytogenes expressing the LCMV GP61-80 peptide, SLP-76 deficient I-Ab:GP61+ cells exhibit reduced division, similar to that seen in in vitro generated CD44hi and endogenous CD4+CD44hi cells. Competitive bone marrow chimera experiments demonstrated that the decrease in homeostatic turnover in the absence of SLP-76 is a cell intrinsic process. Surprisingly, despite the reduction in turnover, I-Ab:GP61+ antigen-specific memory cells persist in normal numbers for more than 30 weeks post LCMV infection in the absence of SLP-76. These data suggest the independent maintenance of a population of antigen-specific CD4+ memory T cells in the absence of SLP-76 and normal levels of homeostatic division.
登录
查看更多内容
影响因子:
15.3
作者:
Kassiotis, G;Zamoyska, R;Stockinger, B
通讯作者:
Stockinger, B
影响因子:
15.3
作者:
Hendricks, J;Xiao, YL;Borst, J
通讯作者:
Borst, J
DOI:
10.1084/jem.20030735
发表时间:
2003-12-15
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Kondrack RM;Harbertson J;Tan JT;McBreen ME;Surh CD;Bradley LM
通讯作者:
Bradley LM
影响因子:
20.3
作者:
Martin, Bruno;Becourt, Chantal;Lucas, Bruno
通讯作者:
Lucas, Bruno
影响因子:
32.4
作者:
Moon, James J.;Chu, H. Hamlet;Jenkins, Marc K.
通讯作者:
Jenkins, Marc K.