PMID- 29088831 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20191120 IS - 1949-2553 (Electronic) IS - 1949-2553 (Linking) VI - 8 IP - 43 DP - 2017 Sep 26 TI - 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. PG - 74880-74896 LID - 10.18632/oncotarget.20425 [doi] AB - 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)-gamma and tumor necrosis factor (TNF)-alpha. 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 impaired suppressive ability of donor Tregs. Expression of sphingosine-1-phosphate receptor 1 (S1PR1), phosphorylated Akt, mammalian target of rapamycin (mTOR) and Raptor increased, while the phosphorylation level of SMAD3 was decreased in the skin, intestine, lung and liver from obese donor splenocytes-treated aGVHD mice. Furthermore, at mRNA and protein levels, we defined several molecules that may account for the enhanced ability of obese donor splenocytes to migrate into target organs, such as IL-2, IL-17, IFN-gamma, TNF-alpha, CXCR3, CXCL9, CXCL10, CXCL11 and CCL3. Therefore, these results imply that obese donor cells may be related to the risk of aGVHD and helping obese donor individuals lose weight represent a compulsory clinical strategy before implementing transplantation to control aGVHD of recipients. FAU - Li, Zengyao AU - Li Z AD - Liver Transplantation Center, First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China. FAU - Gu, Jian AU - Gu J AD - Liver Transplantation Center, First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China. FAU - Zhu, Qin AU - Zhu Q AD - Liver Transplantation Center, First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China. FAU - Liu, Jing AU - Liu J AD - Department of Radiotherapy, First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China. FAU - Lu, Hao AU - Lu H AD - Liver Transplantation Center, First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China. FAU - Lu, Yunjie AU - Lu Y AD - Liver Transplantation Center, First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China. FAU - Wang, Xuehao AU - Wang X AD - Liver Transplantation Center, First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China. LA - eng PT - Journal Article DEP - 20170824 PL - United States TA - Oncotarget JT - Oncotarget JID - 101532965 PMC - PMC5650386 OTO - NOTNLM OT - aGVHD OT - obesity OT - transplantation COIS- CONFLICTS OF INTEREST None declared. EDAT- 2017/11/02 06:00 MHDA- 2017/11/02 06:01 PMCR- 2017/09/26 CRDT- 2017/11/02 06:00 PHST- 2017/04/21 00:00 [received] PHST- 2017/06/04 00:00 [accepted] PHST- 2017/11/02 06:00 [entrez] PHST- 2017/11/02 06:00 [pubmed] PHST- 2017/11/02 06:01 [medline] PHST- 2017/09/26 00:00 [pmc-release] AID - 20425 [pii] AID - 10.18632/oncotarget.20425 [doi] PST - epublish SO - Oncotarget. 2017 Aug 24;8(43):74880-74896. doi: 10.18632/oncotarget.20425. eCollection 2017 Sep 26.