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Erschienen in: International Journal of Hematology 5/2021

01.01.2021 | Original Article

Impact of 2 Gy γ-irradiation on the hallmark characteristics of human bone marrow-derived MSCs

verfasst von: Masaki Iwasa, Sumie Fujii, Aya Fujishiro, Taira Maekawa, Akira Andoh, Akifumi Takaori-Kondo, Tatsuo Ichinohe, Yasuo Miura

Erschienen in: International Journal of Hematology | Ausgabe 5/2021

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Abstract

Two gray γ-irradiation is a widely employed basic module for total body irradiation (TBI) in allogeneic hematopoietic cell transplantation (HCT). The effects of γ-irradiation on hematopoietic and immune cells have been well investigated, but its effects on the bone marrow microenvironment (BMM) are unknown. Given the crucial contribution of mesenchymal/stromal stem cells (MSCs) in the BMM to hematopoiesis and osteogenesis, we investigated whether γ-irradiation affects the hallmark characteristics of human bone marrow-derived MSCs (BM-MSCs). Expansion of 2 Gy γ-irradiated BM-MSCs was delayed but eventually recovered. Colony formation and osteogenic, adipogenic, and chondrogenic differentiation capabilities of these cells were extensively suppressed. Irradiation of BM-MSCs did not affect the expansion of CD34 + hematopoietic stem and progenitor cells or production of CD11b + mature myeloid cells in co-cultures. However, it reduced production of CD19 + B-cells, as well as expression of CXCL12 and interleukin-7, which are essential for B-cell lymphopoiesis, in 2 Gy γ-irradiated BM-MSCs. Collectively, colony formation, osteogenic differentiation, and B-cell lymphopoiesis-supportive capabilities of γ-irradiated BM-MSCs were reduced. These effects may predispose survivors receiving HCT with TBI to defective bone formation and a perturbed humoral immune response.
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Metadaten
Titel
Impact of 2 Gy γ-irradiation on the hallmark characteristics of human bone marrow-derived MSCs
verfasst von
Masaki Iwasa
Sumie Fujii
Aya Fujishiro
Taira Maekawa
Akira Andoh
Akifumi Takaori-Kondo
Tatsuo Ichinohe
Yasuo Miura
Publikationsdatum
01.01.2021
Verlag
Springer Singapore
Erschienen in
International Journal of Hematology / Ausgabe 5/2021
Print ISSN: 0925-5710
Elektronische ISSN: 1865-3774
DOI
https://doi.org/10.1007/s12185-020-03072-9

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