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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 PLoS+One
2015 ; 10
(11
): e0141785
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
MHC Class I Expression by Donor Hematopoietic Stem Cells Is Required to Prevent
NK Cell Attack in Allogeneic, but Not Syngeneic Recipient Mice
#MMPMID26544200
Hirata Y
; Li HW
; Takahashi K
; Ishii H
; Sykes M
; Fujisaki J
PLoS One
2015[]; 10
(11
): e0141785
PMID26544200
show ga
NK cells resist engraftment of syngeneic and allogeneic bone marrow (BM) cells
lacking major histocompatibility (MHC) class I molecules, suggesting a critical
role for donor MHC class I molecules in preventing NK cell attack against donor
hematopoietic stem and progenitor cells (HSPCs), and their derivatives. However,
using high-resolution in vivo imaging, we demonstrated here that syngeneic MHC
class I knockout (KO) donor HSPCs persist with the same survival frequencies as
wild-type donor HSPCs. In contrast, syngeneic MHC class I KO differentiated
hematopoietic cells and allogeneic MHC class I KO HSPCs were rejected in a manner
that was significantly inhibited by NK cell depletion. In vivo time-lapse imaging
demonstrated that mice receiving allogeneic MHC class I KO HSPCs showed a
significant increase in NK cell motility and proliferation as well as frequencies
of NK cell contact with and killing of HSPCs as compared to mice receiving
wild-type HSPCs. The data indicate that donor MHC class I molecules are required
to prevent NK cell-mediated rejection of syngeneic differentiated cells and
allogeneic HSPCs, but not of syngeneic HSPCs.
|*Gene Expression Regulation
[MESH]
|Animals
[MESH]
|Cell Differentiation
[MESH]
|Gene Knockout Techniques
[MESH]
|Graft Rejection/immunology/prevention & control
[MESH]