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Title: Graft-Versus-Host Disease Amelioration by Human Bone Marrow Mesenchymal Stromal/Stem Cell-Derived Extracellular Vesicles Is Associated with Peripheral Preservation of Naive T Cell Populations
Authors: Fujii, Sumie
Miura, Yasuo  kyouindb  KAKEN_id
Fujishiro, Aya
Shindo, Takero  kyouindb  KAKEN_id  orcid (unconfirmed)
Shimazu, Yutaka
Hirai, Hideyo  kyouindb  KAKEN_id
Tahara, Hidetoshi
Takaori-Kondo, Akifumi
Ichinohe, Tatsuo
Maekawa, Taira
Author's alias: 三浦, 康生
進藤, 岳郎
平位, 秀世
髙折, 晃史
前川, 平
Keywords: Mesenchymal stem cells
Graft-versus-host disease
Extracellular vesicles
Regulatory T cells
Naive T cells
Hematopoietic stem cell transplantation
Issue Date: 22-Feb-2018
Publisher: Wiley-Blackwell
Journal title: Stem Cells
Volume: 36
Issue: 3
Start page: 434
End page: 445
Abstract: A substantial proportion of patients with acute graft‐versus‐host disease (aGVHD) respond to cell therapy with culture‐expanded human bone marrow mesenchymal stromal/stem cells (BM‐MSCs). However, the mechanisms by which these cells can ameliorate aGVHD‐associated complications remain to be clarified. We show here that BM‐MSC‐derived extracellular vesicles (EVs) recapitulated the therapeutic effects of BM‐MSCs against aGVHD. Systemic infusion of human BM‐MSC‐derived EVs prolonged the survival of mice with aGVHD and reduced the pathologic damage in multiple GVHD‐targeted organs. In EV‐treated GVHD mice, CD4+ and CD8+ T cells were suppressed. Importantly, the ratio of CD62L‐CD44+ to CD62L + CD44‐ T cells was decreased, suggesting that BM‐MSC‐derived EVs suppressed the functional differentiation of T cells from a naive to an effector phenotype. BM‐MSC‐derived EVs also preserved CD4 + CD25 + Foxp3+ regulatory T cell populations. In a culture of CD3/CD28‐stimulated human peripheral blood mononuclear cells with BM‐MSC‐derived EVs, CD3+ T cell activation was suppressed. However, these cells were not suppressed in cultures with EVs derived from normal human dermal fibroblasts (NHDFs). NHDF‐derived EVs did not ameliorate the clinical or pathological characteristics of aGVHD in mice, suggesting an immunoregulatory function unique to BM‐MSC‐derived EVs. Microarray analysis of microRNAs in BM‐MSC‐derived EVs versus NHDF‐derived EVs showed upregulation of miR‐125a‐3p and downregulation of cell proliferative processes, as identified by Gene Ontology enrichment analysis. Collectively, our findings provide the first evidence that amelioration of aGVHD by therapeutic infusion of BM‐MSC‐derived EVs is associated with the preservation of circulating naive T cells, possibly due to the unique microRNA profiles of BM‐MSC‐derived EVs.
Rights: © 2017 The Authors Stem Cells published by Wiley Periodicals, Inc. on behalf of AlphaMed Press. This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.
DOI(Published Version): 10.1002/stem.2759
PubMed ID: 29239062
Appears in Collections:Journal Articles

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