[HTML][HTML] Instruction of distinct CD4 T helper cell fates by different notch ligands on antigen-presenting cells

D Amsen, JM Blander, GR Lee, K Tanigaki, T Honjo… - Cell, 2004 - cell.com
D Amsen, JM Blander, GR Lee, K Tanigaki, T Honjo, RA Flavell
Cell, 2004cell.com
Antigen-presenting cells (APC) tailor immune responses to microbial encounters by
stimulating differentiation of CD4 T cells into the Th1 and Th2 lineages. We demonstrate that
APC use the Notch pathway to instruct T cell differentiation. Strikingly, of the two Notch
ligand families, Delta induces Th1, while Jagged induces the alternate Th2 fate. Expression
of these different Notch ligands on APC is induced by Th1-or Th2-promoting stimuli. Th2
differentiation has been considered a default process as APC-derived instructive signals are …
Abstract
Antigen-presenting cells (APC) tailor immune responses to microbial encounters by stimulating differentiation of CD4 T cells into the Th1 and Th2 lineages. We demonstrate that APC use the Notch pathway to instruct T cell differentiation. Strikingly, of the two Notch ligand families, Delta induces Th1, while Jagged induces the alternate Th2 fate. Expression of these different Notch ligands on APC is induced by Th1- or Th2-promoting stimuli. Th2 differentiation has been considered a default process as APC-derived instructive signals are unknown. We demonstrate that Jagged constitutes an instructive signal for Th2 differentiation, which is independent of IL4/STAT6. Th2 differentiation induced by APC is abrogated in T cells lacking the Notch effector RBPJκ. Notch directs Th2 differentiation by inducing GATA3 and by directly regulating il4 gene transcription through RBPJκ sites in a 3′ enhancer.
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