Warning: file_get_contents(https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=29563123
&cmd=llinks): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests
in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 215
Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 251.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 251.2 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\29563123
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Blood+Adv
2018 ; 2
(6
): 669-680
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Murine CMV induces type 1 IFN that impairs differentiation of MDSCs critical for
transplantation tolerance
#MMPMID29563123
Dangi A
; Zhang L
; Zhang X
; Luo X
Blood Adv
2018[Mar]; 2
(6
): 669-680
PMID29563123
show ga
Clinical tolerance without immunosuppression has now been achieved for organ
transplantation, and its scope will likely continue to expand. In this context, a
previously understudied and now increasingly relevant area is how microbial
infections might affect the efficacy of tolerance. A highly prevalent and
clinically relevant posttransplant pathogen is cytomegalovirus (CMV). Its impact
on transplantation tolerance and graft outcomes is not well defined. Employing a
mouse model of CMV (MCMV) infection and allogeneic pancreatic islet
transplantation in which donor-specific tolerance was induced by infusing donor
splenocytes rendered apoptotic by treatment with ethylenecarbodiimide, we
investigated the effect of CMV infection on transplantation tolerance induction.
We found that acute MCMV infection abrogated tolerance induction and that this
abrogation correlated with an alteration in the differentiation and function of
myeloid-derived suppressor cells (MDSCs). These effects on MDSCs were mediated in
part through MCMV induced type 1 interferon (IFN) production. During MCMV
infection, the highly immunosuppressive Gr1(HI)-granulocytic MDSCs were markedly
reduced in numbers, and the accumulating Ly6C(HI)-monocytic cells lost their
MDSC-like function but instead acquired an immunostimulatory phenotype to
cross-present alloantigens and prime alloreactive CD8 T cells. Consequently, the
islet allograft exhibited an altered effector to regulatory T-cell ratio that
correlated with the ultimate graft demise. Blocking type 1 IFN signaling during
MCMV infection rescued MDSC populations and partially restored transplantation
tolerance. Our mechanistic studies now provide a solid foundation for seeking
effective therapies for promoting transplantation tolerance in settings of CMV
infection.