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Gut microbiome in allogeneic hematopoietic stem cell transplantation and specific changes associated with acute graft vs host disease

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World Journal of Gastroenterology 2021年第45期27卷 7792-7800页

作者： Quentin Le Bastard Patrice Chevallier Emmanuel Montassier Department of Emergency Medicine Nantes University HospitalNantes 44093France Department of Hematology Nantes University HospitalNantes 44093France

Allogeneic hematopoietic stem cell transplantation(aHSCT)is a standard validated therapy for patients suffering from malignant and nonmalignant hematological ***,aHSCT procedures are limited by potentially life-threatening complications,and one of the most serious complications is acute graft-versus-host disease(GVHD).During the last decades,DNA sequencing technologies were used to investigate relationship between composition or function of the gut microbiome and disease *** if it remains unclear whether these microbiome alterations are causative or secondary to the presence of the disease,they may be useful for diagnosis,prevention and therapy in aHSCT ***,we summarized the most recent findings of the association between human gut microbiome changes and acute GVHD in patients receiving aHSCT.

关键词： Gut microbiome DNA sequencing technologies Allogeneic hematopoietic stem cell transplantation Transplants acute graft vs host disease Biomarkers Composition Function

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Immunophenotypic characteristics of multipotent mesenchymal stromal cells that affect the efficacy of their use in the prevention of acute graft vs host disease

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World Journal of Stem Cells 2020年第11期12卷 1377-1395页

作者： Nataliya Petinati Nikolay Kapranov Yulia Davydova Alexey Bigildeev Olesya Pshenichnikova Dmitriy Karpenko Nina Drize Larisa Kuzmina Elena Parovichnikova Valeriy Savchenko Laboratory for Physiology of Hematopoiesis National Research Center for HematologyMoscow 125167Russia Laboratory for Immunophenotyping of Blood and Bone Marrow Cells National Research Center for HematologyMoscow 125167Russia Laboratory for Genetic Engineering National Research Center for HematologyMoscow 125167Russia Hematopoiesis Depression and Bone Marrow Transplantation Department National Research Center for HematologyMoscow 125167Russia

BACKGROUND Multipotent mesenchymal stromal cells(MSCs)are widely used in the clinic due to their unique properties,namely,their ability to differentiate in all mesenchymal directions and their immunomodulatory *** donor MSCs were used to prevent the development of acute graft vs host disease(GVHD)after allogeneic bone marrow transplantation(allo-BMT).The administration of MSCs to patients was not always *** MSCs obtained from different donors have individual *** differences between MSC samples may affect their clinical *** To study the differences between effective and ineffective *** MSCs derived from the bone marrow of a hematopoietic stem cells donor were injected intravenously into allo-BMT recipients for GVHD prophylaxis at the moment of blood cell *** of 52 MSC samples that were administered to patients were examined,and the same cells were cultured in the presence of peripheral blood mononuclear cells(PBMCs)from a third-party donor or treated with the pro-inflammatory cytokines IL-1β,IFN and *** cytometry revealed the immunophenotype of the nontreated MSCs,the MSCs cocultured with PBMCs for 4 d and the MSCs exposed to *** proportions of CD25-,CD146-,CD69-,HLA-DR-and PD-1-positive CD4+and CD8+cells and the distribution of various effector and memory cell subpopulations in the PBMCs cocultured with the MSCs were also *** Differences in the immunophenotypes of effective and ineffective MSCs were *** the effective samples,the mean fluorescence intensity(MFI)of HLAABC,HLA-DR,CD105,and CD146 was significantly *** MSCs were treated with IFN or cocultured with PBMCs,the HLA-ABC,HLA-DR,CD90 and CD54 MFI showed a stronger increase in the effective MSCs,which indicated an increase in the immunomodulatory activity of these *** PBMCs were cocultured with effective MSCs,the proportions of CD4+and CD8+central memory cells significantly decreased

关键词： Multipotent mesenchymal stromal cells acute graft vs host disease Immunophenotype Lymphocytes Immunomodulation Pro-inflammatory cytokines

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