Obese donor mice splenocytes aggravated the pathogenesis of acute graft-versus-host disease via regulating differentiation of Tregs and CD4(+) T cell induced-type I inflammation

Oncotarget
Zengyao LiXuehao Wang

Abstract

Acute graft-versus-host disease (aGVHD) remains one of the most severe complications in organ and bone marrow transplantation, leading to much morbidity and mortality. Obesity has been associated with increased risk of development of various inflammatory diseases. Here, we investigated the in vitro and in vivo effects of obese donor splenocytes on the development of acute graft-versus-host disease (aGVHD). In this study, mixed lymphocyte reactions (MLR) in vitro showed that obese donor mouse CD4(+) T cell promoted the production of interleukin-2 (IL-2), interferon (IFN)-γ and tumor necrosis factor (TNF)-α. Meanwhile, the inducible Tregs population decreased greatly in obese donor mouse CD4(+) T cells' induction group, compared with normal group. Then in the murine aGVHD model, we found that obese donor splenocytes dramatically increased the severity of aGVHD through down-regulating immune tolerance while enhancing systemic and local immunity. Moreover, we showed that aGVHD induced by obese donors resulted in massive expansion of donor CD3(+) T cells, release of Th1-related cytokines, interleukin-17 (IL-17) and chemokines, significant increase of Th17 cells and inhibition of CD4(+)CD25(+)Foxp3(+) regulatory T cells (Tregs) and i...Continue Reading

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Citations

Apr 3, 2020·Archivum Immunologiae Et Therapiae Experimentalis·Chenchen QinHanyun Ren

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Methods Mentioned

BETA
ELISA
flow cytometry
PCR
PMA
protein assay
electrophoresis

Software Mentioned

ImageJ

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