Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\28947612
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Exp+Med
2017 ; 214
(11
): 3361-3379
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Spatially restricted JAG1-Notch signaling in human thymus provides suitable DC
developmental niches
#MMPMID28947612
Martín-Gayo E
; González-García S
; García-León MJ
; Murcia-Ceballos A
; Alcain J
; García-Peydró M
; Allende L
; de Andrés B
; Gaspar ML
; Toribio ML
J Exp Med
2017[Nov]; 214
(11
): 3361-3379
PMID28947612
show ga
A key unsolved question regarding the developmental origin of conventional and
plasmacytoid dendritic cells (cDCs and pDCs, respectively) resident in the
steady-state thymus is whether early thymic progenitors (ETPs) could escape T
cell fate constraints imposed normally by a Notch-inductive microenvironment and
undergo DC development. By modeling DC generation in bulk and clonal cultures, we
show here that Jagged1 (JAG1)-mediated Notch signaling allows human ETPs to
undertake a myeloid transcriptional program, resulting in GATA2-dependent
generation of CD34(+) CD123(+) progenitors with restricted pDC, cDC, and monocyte
potential, whereas Delta-like1 signaling down-regulates GATA2 and impairs myeloid
development. Progressive commitment to the DC lineage also occurs
intrathymically, as myeloid-primed CD123(+) monocyte/DC and common DC
progenitors, equivalent to those previously identified in the bone marrow, are
resident in the normal human thymus. The identification of a discrete JAG1(+)
thymic medullary niche enriched for DC-lineage cells expressing Notch receptors
further validates the human thymus as a DC-poietic organ, which provides
selective microenvironments permissive for DC development.