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2014 ; 15
(10
): 947-56
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English Wikipedia
A ThPOK-LRF transcriptional node maintains the integrity and effector potential
of post-thymic CD4+ T cells
#MMPMID25129370
Vacchio MS
; Wang L
; Bouladoux N
; Carpenter AC
; Xiong Y
; Williams LC
; Wohlfert E
; Song KD
; Belkaid Y
; Love PE
; Bosselut R
Nat Immunol
2014[Oct]; 15
(10
): 947-56
PMID25129370
show ga
The transcription factor ThPOK promotes CD4(+) T cell differentiation in the
thymus. Here, using a mouse strain that allows post-thymic gene deletion, we show
that ThPOK maintains CD4(+) T lineage integrity and couples effector
differentiation to environmental cues after antigenic stimulation. ThPOK
preserved the integrity and amplitude of effector responses and was required for
proper differentiation of types 1 and 2 helper T cells in vivo by restraining the
expression and function of Runx3, a nuclear factor crucial for cytotoxic T cell
differentiation. The transcription factor LRF acts redundantly with ThPOK to
prevent the transdifferentiation of mature CD4(+) T cells into CD8(+) T cells. As
such, the ThPOK-LRF transcriptional module was essential for CD4(+) T cell
integrity and responses.