| First Author | Huang W | Year | 2014 |
| Journal | J Leukoc Biol | Volume | 96 |
| Issue | 1 | Pages | 55-63 |
| PubMed ID | 24620029 | Mgi Jnum | J:212002 |
| Mgi Id | MGI:5577196 | Doi | 10.1189/jlb.1AB0913-484RR |
| Citation | Huang W, et al. (2014) ITK tunes IL-4-induced development of innate memory CD8+ T cells in a gammadelta T and invariant NKT cell-independent manner. J Leukoc Biol 96(1):55-63 |
| abstractText | True memory CD8(+) T cells develop post antigenic exposure and can provide life-long immune protection. More recently, other types of memory CD8(+) T cells have been described, such as the memory-like CD8(+) T cells (IMP; CD44(hi)CD122(+)) that arise spontaneously in Itk(-/-) mice, which are suggested to develop as a result of IL-4 secreted by NKT-like gammadelta T or PLZF(+) NKT cells found in Itk(-/-) mice. However, we report here that whereas IMP CD8(+) T cell development in Itk(-/-) mice is dependent on IL-4/STAT6 signaling, it is not dependent on any gammadelta T or iNKT cells. Our experiments suggest that the IMP develops as a result of tuning of the CD8(+) T cell response to exogenous IL-4 and TCR triggering by ITK and challenge the current model of IMP CD8(+) T cell development as a result of NKT-like gammadelta T or iNKT cells. These findings suggest that some naive CD8(+) T cells may be preprogrammed by weak homeostatic TCR signals in the presence of IL-4 to become memory phenotype cells with the ability to elaborate effector function rapidly. The role of ITK in this process suggests a mechanism by which IMP CD8(+) T cells can be generated rapidly in response to infection. |
