Cyclosporine A regulates PMN-MDSCs viability and function through MPTP in acute GVHD: Old medication, new target.
Transplant Cell Ther
; 28(7): 411.e1-411.e9, 2022 07.
Article
in En
| MEDLINE
| ID: mdl-35430420
ABSTRACT
Myeloid-derived suppressor cells (MDSCs), a population of myeloid lineage cells with immunosuppressive capacity, can mitigate acute graft-versus-host disease (aGVHD) after allogeneic hematopoietic stem cell transplantation (allo-HSCT). We previously found that the immunosuppressive function of polymorphonuclear population (PMN-MDSCs) was impaired in aGVHD milieu. The aim of this study was to explore the intrinsic mechanism regulating the fate and function of donor-derived PMN-MDSCs during allo-HSCT. We firstly found that mitochondrial permeability transition pore (MPTP) opened in the PMN-MDSCs in response to the intense inflammatory environment of aGVHD, which induced mitochondrial damage, oxidative stress, and apoptosis of PMN-MDSCs. Inhibiting MPTP opening by a traditional immunosuppressant, cyclosporine A (CsA), could restore the immunosuppressive function and viability of PMN-MDSCs in vitro and in vivo, which reveals a new mechanism of CsA application.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Myeloid-Derived Suppressor Cells
/
Graft vs Host Disease
Limits:
Humans
Language:
En
Journal:
Transplant Cell Ther
Year:
2022
Document type:
Article