PMID- 30268079 OWN - NLM STAT- MEDLINE DCOM- 20190501 LR - 20190501 IS - 1872-9142 (Electronic) IS - 0161-5890 (Linking) VI - 103 DP - 2018 Nov TI - CD8+iTregs attenuate glomerular endothelial cell injury in lupus-prone mice through blocking the activation of p38 MAPK and NF-kappaB. PG - 133-143 LID - S0161-5890(18)30769-7 [pii] LID - 10.1016/j.molimm.2018.09.006 [doi] AB - Systemic lupus erythematosus (SLE) is a chronic inflammatory disease. Endothelial cell injury plays an important role in the inflammatory processes associated with SLE. CD4+Foxp3+regulatory T cells (Tregs) reduce the injury to endothelial cells induced by inflammatory factors. As a newly identified regulatory T cell, we previously reported that CD8+CD103+iTregs had similar effects to those of CD4+iTregs in the process of immunoregulation. In this paper, we further explored the effect and mechanism of CD8+iTregs on endothelial cell injury. The expressions of vascular cellular adhesion molecule-1 (VCAM-1), intracellular adhesion molecule-1 (ICAM-1), interferon-gamma (IFN-gamma), tumor necrosis factor-alpha (TNF-alpha), interleukin-6 (IL-6) and monocyte chemoattractant protein-1 (MCP-1) in MRL/lpr mouse glomerular endothelial cells (lupus-MGECs) were estimated by quantitative real-time polymerase chain reaction, enzyme-linked immunosorbent assay and Western blotting. The lupus-MGEC apoptosis rate was detected by flow cytometry and the adhesion of monocyte-like cells to lupus-MGECs exposed to lipopolysaccharide (LPS) was determined by the adhesion assay. Additionally, the expressions of P-p38, P-NF-kappaB and P-IkappaBalpha were detected by Western blotting. The results showed that LPS increased the expressions of VCAM-1, ICAM-1, IFN-gamma, TNF-alpha, IL-6 and MCP-1 in lupus-MGECs, while CD8+iTregs significantly decreased the levels of these adhesion molecules and inflammatory mediators. Furthermore, CD8+iTregs alleviated lupus-MGEC apoptosis and inhibited the adhesion of monocyte-like cells to lupus-MGECs. Both nuclear factor-kappaB (NF-kappaB) and p38 mitogen-activated protein kinase (MAPK), activated by LPS, were suppressed by CD8+iTregs. These findings suggest that CD8+iTregs attenuate LPS-induced glomerular endothelial cell injury through blocking the activation of p38 MAPK and NF-kappaB in lupus-MGECs. The protective effect of CD8+iTregs indicates their possible therapeutic application in Lupus nephritis. CI - Copyright (c) 2018 Elsevier Ltd. All rights reserved. FAU - Liu, Ya AU - Liu Y AD - Department of Nephrology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China. FAU - Deng, Weijuan AU - Deng W AD - Department of Nephrology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China. FAU - Meng, Qiaoyun AU - Meng Q AD - Department of Nephrology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China. FAU - Qiu, Xiaonan AU - Qiu X AD - Department of Nephrology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China. FAU - Sun, Dong AU - Sun D AD - Department of Nephrology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China. Electronic address: 767946775@qq.com. FAU - Dai, Chun AU - Dai C AD - Department of Nephrology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China. Electronic address: 13615133736@163.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180927 PL - England TA - Mol Immunol JT - Molecular immunology JID - 7905289 RN - 0 (Cell Adhesion Molecules) RN - 0 (Inflammation Mediators) RN - 0 (Lipopolysaccharides) RN - 0 (NF-kappa B) RN - EC 2.7.11.24 (p38 Mitogen-Activated Protein Kinases) SB - IM EIN - Mol Immunol. 2019 Jul;111:220. PMID: 31174855 MH - Animals MH - CD8-Positive T-Lymphocytes/immunology/metabolism MH - Cell Adhesion Molecules/genetics/metabolism MH - Cells, Cultured MH - Endothelial Cells/drug effects/*immunology/metabolism MH - Gene Expression/drug effects MH - Humans MH - Inflammation Mediators/immunology/metabolism MH - Kidney Glomerulus/cytology MH - Lipopolysaccharides/pharmacology MH - Lupus Erythematosus, Systemic/genetics/*immunology/metabolism MH - Mice, Inbred MRL lpr MH - NF-kappa B/*immunology/metabolism MH - Signal Transduction/drug effects MH - T-Lymphocytes, Regulatory/*immunology/metabolism MH - U937 Cells MH - p38 Mitogen-Activated Protein Kinases/*immunology/metabolism OTO - NOTNLM OT - CD8+iTregs OT - Glomerular endothelial cell OT - Inflammatory mediators OT - Lupus nephritis OT - Monocyte adhesion EDAT- 2018/09/30 06:00 MHDA- 2019/05/02 06:00 CRDT- 2018/09/30 06:00 PHST- 2018/04/26 00:00 [received] PHST- 2018/09/01 00:00 [revised] PHST- 2018/09/09 00:00 [accepted] PHST- 2018/09/30 06:00 [pubmed] PHST- 2019/05/02 06:00 [medline] PHST- 2018/09/30 06:00 [entrez] AID - S0161-5890(18)30769-7 [pii] AID - 10.1016/j.molimm.2018.09.006 [doi] PST - ppublish SO - Mol Immunol. 2018 Nov;103:133-143. doi: 10.1016/j.molimm.2018.09.006. Epub 2018 Sep 27.