First Author | Voll RE | Year | 2000 |
Journal | Immunity | Volume | 13 |
Issue | 5 | Pages | 677-89 |
PubMed ID | 11114380 | Mgi Jnum | J:106461 |
Mgi Id | MGI:3618586 | Doi | 10.1016/s1074-7613(00)00067-4 |
Citation | Voll RE, et al. (2000) NF-kappa B activation by the pre-T cell receptor serves as a selective survival signal in T lymphocyte development. Immunity 13(5):677-89 |
abstractText | Activation of the transcription factor NF-kappa B and pre-T cell receptor (pre-TCR) expression is tightly correlated during thymocyte development. Inhibition of NF-kappa B in isolated thymocytes in vitro results in spontaneous apoptosis of cells expressing the pre-TCR, whereas inhibition of NF-kappa B in transgenic mice through expression of a mutated, superrepressor form of I kappa B alpha leads to a loss of beta-selected thymocytes. In contrast, the forced activation of NF-kappa B through expression of a dominant-active I kappa B kinase allows differentiation to proceed to the CD4(+)CD8(+) stage in a Rag1(-/-) mouse that cannot assemble the pre-TCR. Therefore, signals emanating from the pre-TCR are mediated at least in part by NF-kappa B, which provides a selective survival signal for developing thymocytes with productive beta chain rearrangements. |