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Chaudhuri SM, Weinberg SE, Wang D, Yalom LK, Montauti E, Iyer R, Tang AY, Torres Acosta MA, Shen J, Mani NL, Wang S, Liu K, Lu W, Bui TM, Manzanares LD, Dehghani Z, Wai CM, Gao B, Wei J, Yue F, Cui W, Singer BD, Sumagin R, Zhang Y, Fang D. Mediator complex subunit 1 architects a tumorigenic Treg cell program independent of inflammation. Cell Rep Med 2024; 5:101441. [PMID: 38428427 PMCID: PMC10983042 DOI: 10.1016/j.xcrm.2024.101441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 12/18/2023] [Accepted: 02/01/2024] [Indexed: 03/03/2024]
Abstract
While immunotherapy has revolutionized cancer treatment, its safety has been hampered by immunotherapy-related adverse events. Unexpectedly, we show that Mediator complex subunit 1 (MED1) is required for T regulatory (Treg) cell function specifically in the tumor microenvironment. Treg cell-specific MED1 deletion does not predispose mice to autoimmunity or excessive inflammation. In contrast, MED1 is required for Treg cell promotion of tumor growth because MED1 is required for the terminal differentiation of effector Treg cells in the tumor. Suppression of these terminally differentiated Treg cells is sufficient for eliciting antitumor immunity. Both human and murine Treg cells experience divergent paths of differentiation in tumors and matched tissues with non-malignant inflammation. Collectively, we identify a pathway promoting the differentiation of a Treg cell effector subset specific to tumors and demonstrate that suppression of a subset of Treg cells is sufficient for promoting antitumor immunity in the absence of autoimmune consequences.
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Affiliation(s)
- Shuvam M Chaudhuri
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Samuel E Weinberg
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Dongmei Wang
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Lenore K Yalom
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Elena Montauti
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Radhika Iyer
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Amy Y Tang
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Manuel A Torres Acosta
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; Medical Scientist Training Program, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Jian Shen
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Nikita L Mani
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Shengnan Wang
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Kun Liu
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Weiyuan Lu
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Triet M Bui
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Laura D Manzanares
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Zeinab Dehghani
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Ching Man Wai
- Center for Genetic Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; Department of Biochemistry and Molecular Genetics, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Beixue Gao
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Juncheng Wei
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Feng Yue
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; Department of Biochemistry and Molecular Genetics, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Weiguo Cui
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Benjamin D Singer
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; Department of Biochemistry and Molecular Genetics, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Ronen Sumagin
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Yana Zhang
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Deyu Fang
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.
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Huang TQ, Chen YX, Zeng SL, Lin Y, Li F, Jiang ZM, Liu EH. Bergenin Alleviates Ulcerative Colitis By Decreasing Gut Commensal Bacteroides vulgatus-Mediated Elevated Branched-Chain Amino Acids. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:3606-3621. [PMID: 38324392 DOI: 10.1021/acs.jafc.3c09448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Ulcerative colitis is closely associated with the dysregulation of gut microbiota. There is growing evidence that natural products may improve ulcerative colitis by regulating the gut microbiota. In this research, we demonstrated that bergenin, a naturally occurring isocoumarin, significantly ameliorates colitis symptoms in dextran sulfate sodium (DSS)-induced mice. Transcriptomic analysis and Caco-2 cell assays revealed that bergenin could ameliorate ulcerative colitis by inhibiting TLR4 and regulating NF-κB and mTOR phosphorylation. 16S rRNA sequencing and metabolomics analyses revealed that bergenin could improve gut microbiota dysbiosis by decreasing branched-chain amino acid (BCAA) levels. BCAA intervention mediated the mTOR/p70S6K signaling pathway to exacerbate the symptoms of ulcerative colitis in mice. Notably, bergenin greatly decreased the symbiotic bacteria Bacteroides vulgatus (B. vulgatus), and the gavage of B. vulgatus increased BCAA concentrations and aggravated the symptoms of ulcerative colitis in mice. Our findings suggest that gut microbiota-mediated BCAA metabolism plays a vital role in the protective effect of bergenin on ulcerative colitis, providing novel insights for ulcerative colitis prevention through manipulation of the gut microbiota.
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Affiliation(s)
- Tian-Qing Huang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjia Lane, Nanjing 210009, China
| | - Yu-Xin Chen
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjia Lane, Nanjing 210009, China
| | - Su-Ling Zeng
- Institute of Health and Medicine, Hefei Comprehensive National Science Center, Hefei 230601, China
| | - Yang Lin
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjia Lane, Nanjing 210009, China
| | - Fei Li
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjia Lane, Nanjing 210009, China
| | - Zheng-Meng Jiang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjia Lane, Nanjing 210009, China
- College of Pharmacy, Nanjing University of Chinese Medicine, No. 138 Xianlin Road, Nanjing 210023, China
| | - E-Hu Liu
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjia Lane, Nanjing 210009, China
- College of Pharmacy, Nanjing University of Chinese Medicine, No. 138 Xianlin Road, Nanjing 210023, China
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3
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Yu L, Zhou B, Zhu Y, Li L, Zhong Y, Zhu L, Wang H, Chen H, Xu J, Guo T, Feng L, Wang X, Cai Z, Wang J, Jin H. HSF1 promotes CD69 + Treg differentiation to inhibit colitis progression. Theranostics 2023; 13:1892-1905. [PMID: 37064870 PMCID: PMC10091886 DOI: 10.7150/thno.78078] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 02/22/2023] [Indexed: 04/18/2023] Open
Abstract
Regulatory T cells (Tregs) are critical for generating and maintaining peripheral tolerance. Treg-based immunotherapy is valuable for the clinical management of diseases resulting from dysregulation of immune tolerance. However, the lack of potency is a potential limitation of Treg therapy. In addition, CD69 positive-Treg (CD69+ Treg) represent a newly identified subset of Tregs with potent immune suppressive capability. Methods: Foxp3 YFP-Cre CD69 fl/fl and CD4 Cre CD69 fl/fl mice were generated to determine the relevance of CD69 to Treg. Chromatin Immunoprecipitation Assay (ChIP) and luciferase Assay were performed to detect the regulation of CD69 transcription by heat shock transcription factor 1(HSF1). Gene expression was measured by western blotting and qRT-PCR. The differentiation of naive T cells to CD69+Foxp3+ iTregs was determined by flow cytometry. The immunosuppressive ability of Tregs was analyzed by ELISA and flow cytometry. Colon inflammation in mice was reflected by changes in body weight and colon length, the disease activity index (DAI), and H&E staining of colon tissues. Results: Induced Tregs (iTregs) from CD4 Cre CD69 fl/fl mice failed to alleviate colitis. The transcription factor HSF1 interacted with the promoter of the CD69 gene to prompt its transcription during Treg differentiation. Genetic and chemical inhibition of HSF1 impaired CD69+ Treg differentiation and promoted the pathogenesis of colitis in mice. In contrast, HSF1 protein stabilized by inhibiting its proteasomal degradation promoted CD69+ Treg differentiation and alleviated colitis in mice. Moreover, adoptive transfer of iTregs with HSF1 stabilization by proteasome inhibitor (PSI) dramatically prevented the development of colitis in mice and was accompanied by decreased production of pro-inflammatory cytokines and reduced accumulation of pro-inflammatory lymphocytes in colitis tissue, whereas Tregs induced in the absence of PSI were less stable and ineffective in suppressing colitis. Conclusions: HSF1 promotes CD69+ Tregs differentiation by activating the CD69 transcription, which is critical for the immunosuppressive function of Tregs. Stabilization of HSF1 by PSIs results in the efficient generation of Tregs with high potency to treat colitis and probably other autoimmune diseases involving Tregs deficiency.
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Affiliation(s)
- Lei Yu
- Laboratory of Cancer Biology, Key Lab of Biotherapy in Zhejiang Province, Cancer Center of Zhejiang University, Sir Run Run Shaw hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Bingluo Zhou
- Laboratory of Cancer Biology, Key Lab of Biotherapy in Zhejiang Province, Cancer Center of Zhejiang University, Sir Run Run Shaw hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yiran Zhu
- Laboratory of Cancer Biology, Key Lab of Biotherapy in Zhejiang Province, Cancer Center of Zhejiang University, Sir Run Run Shaw hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
- Department of Medical Oncology, Sir Run Run Shaw hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Ling Li
- Laboratory of Cancer Biology, Key Lab of Biotherapy in Zhejiang Province, Cancer Center of Zhejiang University, Sir Run Run Shaw hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yiming Zhong
- Department of Medical Oncology, Sir Run Run Shaw hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Liyuan Zhu
- Laboratory of Cancer Biology, Key Lab of Biotherapy in Zhejiang Province, Cancer Center of Zhejiang University, Sir Run Run Shaw hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Hanying Wang
- Department of Medical Oncology, Sir Run Run Shaw hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Hui Chen
- Department of Pathology, Sir Run Run Shaw hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Jinye Xu
- Laboratory of Cancer Biology, Key Lab of Biotherapy in Zhejiang Province, Cancer Center of Zhejiang University, Sir Run Run Shaw hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Tianxin Guo
- Department of respiratory medicine, The First People's Hospital of Xiaoshan District, Xiaoshan First Affiliated Hospital of Wenzhou Medical University, Hangzhou, 311200, Zhejiang, China
| | - Lifeng Feng
- Laboratory of Cancer Biology, Key Lab of Biotherapy in Zhejiang Province, Cancer Center of Zhejiang University, Sir Run Run Shaw hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Xian Wang
- Department of Medical Oncology, Sir Run Run Shaw hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Zhijian Cai
- Institute of Immunology, and Department of Orthopedics of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- ✉ Corresponding authors: Prof. Dr. Hongchuan Jin, . Prof. Dr. Zhijian Cai, . Prof. Dr. Jianli Wang,
| | - Jianli Wang
- Institute of Immunology, and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, China
- ✉ Corresponding authors: Prof. Dr. Hongchuan Jin, . Prof. Dr. Zhijian Cai, . Prof. Dr. Jianli Wang,
| | - Hongchuan Jin
- Laboratory of Cancer Biology, Key Lab of Biotherapy in Zhejiang Province, Cancer Center of Zhejiang University, Sir Run Run Shaw hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
- ✉ Corresponding authors: Prof. Dr. Hongchuan Jin, . Prof. Dr. Zhijian Cai, . Prof. Dr. Jianli Wang,
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4
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Liu Y, Li X, Wu X, Luo X, Yan B, Mo C, Guo H, Yang S, Wang Y, Lai Y, Puno P, Li L. Sis-25, a meroditerpenoid derivative with a cyclobutane scaffold, inhibits activated T cell proliferation by targeting GSK3β in vitro and in vivo. Eur J Pharmacol 2022; 929:175151. [PMID: 35841942 DOI: 10.1016/j.ejphar.2022.175151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 07/03/2022] [Accepted: 07/07/2022] [Indexed: 11/03/2022]
Abstract
A series of novel scopariusicide derivatives were designed and synthesized starting from the main diterpenoid from the aerial parts of Isodon scoparius. Sis-25 was the most effective compound among them. The potential mechanism(s) of its immunosuppressive activity in vitro, as well as its effects on delayed type hypersensitivity (DTH) reaction and imiquimod-induced dermatitis in vivo were investigated in this study. Sis-25 inhibited anti-CD3/anti-CD28 mAbs, PHA or alloantigen-induced T cell proliferation without obvious cytotoxicity. Sis-25 was a highly selective inhibitor of GSK3-β and inhibited the mTOR/p70S6K pathway but not the PI3K/Akt, p38 MAPK/ERK 1/2 and JAK3/STAT5 pathways. Furthermore, Sis-25 significantly inhibited IFN-γ, IL-6 and IL-17 expression but not IL-10 expression in activated T cells. Finally, Sis-25 treatment mitigated the DNFB-induced DTH reaction and ameliorated imiquimod-induced dermatitis. In summary, Sis-25 exerted significant immunosuppressive activity by targeting GSK3β in vitro and in vivo. Sis-25 may guide the design of new drugs for more effective and safer treatments of autoimmune diseases and provide new insight into developing utilizations of Isodon scoparius.
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Affiliation(s)
- Yang Liu
- Department of Gastroenterology, The First Affiliated Hospital of Chengdu Medical College, Chengdu, 610500, Sichuan, PR China; Research Center, Chengdu Medical College, Chengdu, 610500, Sichuan, PR China
| | - Xingren Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, Yunnan, PR China
| | - Xiuyin Wu
- Research Center, Chengdu Medical College, Chengdu, 610500, Sichuan, PR China
| | - Xingyan Luo
- Research Center, Chengdu Medical College, Chengdu, 610500, Sichuan, PR China
| | - Bingchao Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, Yunnan, PR China
| | - Chunfen Mo
- Research Center, Chengdu Medical College, Chengdu, 610500, Sichuan, PR China
| | - Huijie Guo
- Research Center, Chengdu Medical College, Chengdu, 610500, Sichuan, PR China
| | - Shuxia Yang
- Research Center, Chengdu Medical College, Chengdu, 610500, Sichuan, PR China
| | - Yantang Wang
- Research Center, Chengdu Medical College, Chengdu, 610500, Sichuan, PR China
| | - Yi Lai
- Research Center, Chengdu Medical College, Chengdu, 610500, Sichuan, PR China
| | - Pematenzin Puno
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, Yunnan, PR China.
| | - Limei Li
- College of Pharmacy, Southwest Minzu University, Chengdu, 610225, Sichuan, PR China.
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5
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Feng J, Wu Y. Interleukin-35 ameliorates cardiovascular disease by suppressing inflammatory responses and regulating immune homeostasis. Int Immunopharmacol 2022; 110:108938. [PMID: 35759811 DOI: 10.1016/j.intimp.2022.108938] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/05/2022] [Accepted: 06/07/2022] [Indexed: 12/14/2022]
Abstract
The immune response is of great significance in the initiation and progression of a diversity of cardiovascular diseases involving pro-and anti-inflammatory cytokines. Interleukin-35 (IL-35), a cytokine of the interleukin-12 family, is a novel anti-inflammation and immunosuppressive cytokine, maintaining inflammatory suppression and regulating immune homeostasis. The role of IL-35 in cardiovascular diseases (CVDs) has aroused enthusiastic attention, a diversity of experimental or clinical evidence has indicated that IL-35 potentially has a pivot role in protecting against cardiovascular diseases, especially atherosclerosis and myocarditis. In this review, we initiate an overview of the relationship between Interleukin-35 and cardiovascular diseases, including atherosclerosis, acute coronary syndrome, pulmonary hypertension, abdominal aortic aneurysm, heart failure, myocardial ischemia-reperfusion, aortic dissection and myocarditis. Although the specific molecular mechanisms entailing the protective effects of IL-35 remain an unsolved issue, targeted therapies with IL-35 might provide a promising and effective solution to prevent and cure cardiovascular diseases.
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Affiliation(s)
- Jie Feng
- Department of Cardiology, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Yanqing Wu
- Department of Cardiology, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China.
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Chen W, Huang W, Xue Y, Chen Y, Qian W, Ma J, August A, Wang J, Zheng SG, Lin J. Neuropilin-1 Identifies a New Subpopulation of TGF-β-Induced Foxp3 + Regulatory T Cells With Potent Suppressive Function and Enhanced Stability During Inflammation. Front Immunol 2022; 13:900139. [PMID: 35603221 PMCID: PMC9114772 DOI: 10.3389/fimmu.2022.900139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Accepted: 04/11/2022] [Indexed: 11/13/2022] Open
Abstract
CD4+Foxp3+ regulatory T cells (Tregs) play a crucial role in preventing autoimmunity and inflammation. There are naturally-derived in the thymus (tTreg), generated extrathymically in the periphery (pTreg), and induced in vitro culture (iTreg) with different characteristics of suppressiveness, stability, and plasticity. There is an abundance of published data on neuropilin-1 (Nrp-1) as a tTreg marker, but little data exist on iTreg. The fidelity of Nrp-1 as a tTreg marker and its role in iTreg remains to be explored. This study found that Nrp-1 was expressed by a subset of Foxp3+CD4+T cells in the central and peripheral lymphoid organs in intact mice, as well as in iTreg. Nrp-1+iTreg and Nrp-1-iTreg were adoptively transferred into a T cell-mediated colitis model to determine their ability to suppress inflammation. Differences in gene expression between Nrp-1+ and Nrp-1-iTreg were analyzed by RNA sequencing. We demonstrated that the Nrp-1+ subset of the iTreg exhibited enhanced suppressive function and stability compared to the Nrp-1- counterpart both in vivo and in vitro, partly depending on IL-10. We found that Nrp-1 is not an exclusive marker of tTreg, however, it is a biomarker identifying a new subset of iTreg with enhanced suppressive function, implicating a potential for Nrp-1+iTreg cell therapy for autoimmune and inflammatory diseases.
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Affiliation(s)
- Weiqian Chen
- Division of Rheumatology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Division of Rheumatology, Department of Medicine, Pennsylvania State University Hershey College of Medicine, Hershey, PA, United States
| | - Weishan Huang
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States.,Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, LA, United States
| | - Youqiu Xue
- Division of Rheumatology, Department of Medicine, Pennsylvania State University Hershey College of Medicine, Hershey, PA, United States.,Department of Clinical Immunology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Ye Chen
- Department of Clinical Immunology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Wenbin Qian
- Division of Hematology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jilin Ma
- Division of Rheumatology, Department of Medicine, Pennsylvania State University Hershey College of Medicine, Hershey, PA, United States
| | - Avery August
- Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, LA, United States
| | - Julie Wang
- Division of Rheumatology, Department of Medicine, Pennsylvania State University Hershey College of Medicine, Hershey, PA, United States.,Department of Clinical Immunology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Song Guo Zheng
- Division of Rheumatology, Department of Medicine, Pennsylvania State University Hershey College of Medicine, Hershey, PA, United States.,Department of Clinical Immunology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Jin Lin
- Division of Rheumatology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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Bolivar-Wagers S, Larson JH, Jin S, Blazar BR. Cytolytic CD4 + and CD8 + Regulatory T-Cells and Implications for Developing Immunotherapies to Combat Graft-Versus-Host Disease. Front Immunol 2022; 13:864748. [PMID: 35493508 PMCID: PMC9040077 DOI: 10.3389/fimmu.2022.864748] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 03/16/2022] [Indexed: 02/03/2023] Open
Abstract
Regulatory T-cells (Treg) are critical for the maintenance of immune homeostasis and tolerance induction. While the immunosuppressive mechanisms of Treg have been extensively investigated for decades, the mechanisms responsible for Treg cytotoxicity and their therapeutic potential in regulating immune responses have been incompletely explored and exploited. Conventional cytotoxic T effector cells (Teffs) are known to be important for adaptive immune responses, particularly in the settings of viral infections and cancer. CD4+ and CD8+ Treg subsets may also share similar cytotoxic properties with conventional Teffs. Cytotoxic effector Treg (cyTreg) are a heterogeneous population in the periphery that retain the capacity to suppress T-cell proliferation and activation, induce cellular apoptosis, and migrate to tissues to ensure immune homeostasis. The latter can occur through several cytolytic mechanisms, including the Granzyme/Perforin and Fas/FasL signaling pathways. This review focuses on the current knowledge and recent advances in our understanding of cyTreg and their potential application in the treatment of human disease, particularly Graft-versus-Host Disease (GVHD).
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Affiliation(s)
| | | | | | - Bruce R. Blazar
- Department of Pediatrics, Division of Blood & Marrow Transplant & Cellular Therapy, University of Minnesota, Minneapolis, MN, United States
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8
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Intramuscular Boosting with hIFN-Alpha 2b Enhances BCGphipps-Induced Protection in a Murine Model of Leprosy. MICROBIOLOGY RESEARCH 2021. [DOI: 10.3390/microbiolres12030051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Host immunity to Mycobacterium leprae encompasses a spectrum of mechanisms that range from cellular immunity-driven protection to damage associated with humoral immunity as in type-2 leprosy reactions. Although type I interferons (IFNs) participate in eliminating intracellular pathogens, their contribution to the production of antibodies and CD3+ FOXP3+ regulatory T cells (Tregs) in BCG vaccine-mediated protection in leprosy is unknown. BCGphipps (BCGph) priming followed by intramuscular hIFN-α 2b boost significantly reduced lesion size and Mycobacterium lepraemurium growth in the skin. T follicular regulatory cells (TFR), a subset of Tregs induced by immunization or infection, reside in the germinal centers (GCs) and modulate antibody production. We found impaired Treg induction and improved GCs in draining lymph nodes of BCGph primed and hIFN-α 2b boosted mice. Moreover, these mice elicited significant amounts of IL-4 and IL-10 in serum. Thus, our results support the adjuvant properties of hIFN-α 2b in the context of BCGph priming to enhance protective immunity against skin leprosy.
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9
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Leite CA, Mota JM, de Lima KA, Wanderley CW, Nascimento LA, Ferreira MD, Silva CMS, Colon DF, Sakita JY, Kannen V, Viacava PR, Begnami MD, Lima-Junior RCP, Cordeiro de Lima VC, Alves-Filho JC, Cunha FQ, Ribeiro RA. Paradoxical interaction between cancer and long-term postsepsis disorder: impairment of de novo carcinogenesis versus favoring the growth of established tumors. J Immunother Cancer 2021; 8:jitc-2019-000129. [PMID: 32376720 PMCID: PMC7223471 DOI: 10.1136/jitc-2019-000129] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/14/2020] [Indexed: 02/06/2023] Open
Abstract
Background Previous data have reported that the growth of established tumors may be facilitated by postsepsis disorder through changes in the microenvironment and immune dysfunction. However, the influence of postsepsis disorder in initial carcinogenesis remains elusive. Methods In the present work, the effect of postsepsis on inflammation-induced early carcinogenesis was evaluated in an experimental model of colitis-associated colorectal cancer (CAC). We also analyzed the frequency and role of intestinal T regulatory cells (Treg) in CAC carcinogenesis. Results The colitis grade and the tumor development rate were evaluated postmortem or in vivo through serial colonoscopies. Sepsis-surviving mice (SSM) presented with a lower colonic DNA damage, polyp incidence, reduced tumor load, and milder colitis than their sham-operated counterparts. Ablating Treg led to restoration of the ability to develop colitis and tumor polyps in the SSM, in a similar fashion to that in the sham-operated mice. On the other hand, the growth of subcutaneously inoculated MC38luc colorectal cancer cells or previously established chemical CAC tumors was increased in SSM. Conclusion Our results provide evidence that postsepsis disorder has a dual effect in cancer development, inhibiting inflammation-induced early carcinogenesis in a Treg-dependent manner, while increasing the growth of previously established tumors.
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Affiliation(s)
- Caio Abner Leite
- A.C. Camargo Cancer Center, Sao Paulo, Brazil.,Center for Research in Inflammatory Diseases (CRID), University of Sao Paulo, Ribeirao Preto, Brazil.,Cancer Institute of Ceara, Fortaleza, Brazil
| | - Jose Mauricio Mota
- Instituto do Cancer do Estado de Sao Paulo, University of Sao Paulo, Sao Paulo, Brazil
| | - Kalil Alves de Lima
- Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | | | | | | | | | | | - Juliana Yumi Sakita
- Department of Toxicology, Bromatology, and Clinical Analysis, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Vinicius Kannen
- Department of Toxicology, Bromatology, and Clinical Analysis, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Paula Ramos Viacava
- Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | | | | | | | | | - Fernando Queiroz Cunha
- Center for Research in Inflammatory Diseases (CRID), University of Sao Paulo, Ribeirao Preto, Brazil .,Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Ronaldo Albuquerque Ribeiro
- Cancer Institute of Ceara, Fortaleza, Brazil.,Federal University of Ceara, Faculty of Medicine, Fortaleza, Brazil
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10
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Wang X, Rojas-Quintero J, Zhang D, Nakajima T, Walker KH, Peh HY, Li Y, Fucci QA, Tesfaigzi Y, Owen CA. A disintegrin and metalloproteinase domain-15 deficiency leads to exaggerated cigarette smoke-induced chronic obstructive pulmonary disease (COPD)-like disease in mice. Mucosal Immunol 2021; 14:342-356. [PMID: 32690871 PMCID: PMC8422911 DOI: 10.1038/s41385-020-0325-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 06/21/2020] [Accepted: 07/06/2020] [Indexed: 02/04/2023]
Abstract
A disintegrin and metalloproteinase domain-15 (ADAM15) is expressed by cells implicated in the pathogenesis of chronic obstructive pulmonary disease (COPD), but its contributions to COPD are unknown. To address this gap, ADAM15 levels were measured in samples from cigarette smoke (CS)-versus air-exposed wild-type (WT) mice. CS-induced COPD-like disease was compared in CS-exposed WT, Adam15-/-, and Adam15 bone marrow chimeric mice. CS exposure increased Adam15 expression in lung macrophages and CD8+ T cells and to a lesser extent in airway epithelial cells in WT mice. CS-exposed Adam15-/- mice had greater emphysema, small airway fibrosis, and lung inflammation (macrophages and CD8+ T cells) than WT mice. Adam15 bone marrow chimera studies revealed that Adam15 deficiency in leukocytes led to exaggerated pulmonary inflammation and COPD-like disease in mice. Adam15 deficiency in CD8+ T cells was required for the exaggerated pulmonary inflammation and COPD-like disease in CS-exposed Adam15-/- mice (as assessed by genetically deleting CD8+ T cells in Adam15-/- mice). Adam15 deficiency increased pulmonary inflammation by rendering CD8+ T cells and macrophages resistant to CS-induced activation of the mitochondrial apoptosis pathway by preserving mTOR signaling and intracellular Mcl-1 levels in these cells. These results strongly link ADAM15 deficiency to the pathogenesis of COPD.
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Affiliation(s)
- Xiaoyun Wang
- Division of Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, 02115, USA,Center for Vaccines and Immunology, University of Georgia, Athens, GA 30602, USA
| | - Joselyn Rojas-Quintero
- Division of Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Duo Zhang
- Program in Clinical and Experimental Therapeutics, Department of Clinical and Administrative Pharmacy, College of Pharmacy, University of Georgia, Augusta, GA, 30901, USA,Vascular Biology Center, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA
| | - Takahiro Nakajima
- Division of Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Katherine H. Walker
- Division of Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Hong Yong Peh
- Division of Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, 02115, USA,Department of Pharmacology, Yong Loo Lin School of Medicine, National University Health System, Singapore
| | - Yuhong Li
- Division of Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Quynh-Anh Fucci
- Division of Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Yohannes Tesfaigzi
- Division of Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Caroline A. Owen
- Division of Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, 02115, USA
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11
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Del Zotto G, Principi E, Antonini F, Baratto S, Panicucci C, Bruno C, Raffaghello L. Comprehensive Phenotyping of Peripheral Blood T Lymphocytes in Healthy Mice. Cytometry A 2020; 99:243-250. [PMID: 33098601 DOI: 10.1002/cyto.a.24246] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 10/20/2020] [Accepted: 10/21/2020] [Indexed: 01/06/2023]
Abstract
T lymphocytes play a central role in antigen-specific immune responses. They modulate the function of different immune cells both through a direct contact (receptor binding) and through the secretion of cytokines. At the same time, they are deeply involved in the direct killing of aberrant target cells. T lymphocytes derive from a bone marrow precursor that migrates in the thymus where the main differentiation steps take place. Mature CD4 and CD8 single-positive cells, then, leave the thymus to reach the secondary lymphoid organs. T-cell subsets and their maturation steps can be identified mainly based on the expression of extracellular markers, intracellular transcription factors and cytokine production profiles. In this review, we report, from a cytometric point of view, an overview of the most important T-cell subpopulations and their differentiation state. © 2020 International Society for Advancement of Cytometry.
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Affiliation(s)
- Genny Del Zotto
- Core Facilities, Area Aggregazione Servizi e Laboratori Diagnostici, IRCCS Istituto G. Gaslini, Genoa, Italy
| | - Elisa Principi
- Center of Translational and Experimental Myology, IRCCS Istituto G. Gaslini, Genoa, Italy
| | - Francesca Antonini
- Core Facilities, Area Aggregazione Servizi e Laboratori Diagnostici, IRCCS Istituto G. Gaslini, Genoa, Italy
| | - Serena Baratto
- Center of Translational and Experimental Myology, IRCCS Istituto G. Gaslini, Genoa, Italy
| | - Chiara Panicucci
- Center of Translational and Experimental Myology, IRCCS Istituto G. Gaslini, Genoa, Italy
| | - Claudio Bruno
- Center of Translational and Experimental Myology, IRCCS Istituto G. Gaslini, Genoa, Italy
| | - Lizzia Raffaghello
- Center of Translational and Experimental Myology, IRCCS Istituto G. Gaslini, Genoa, Italy
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12
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Tryptophan Metabolism, Regulatory T Cells, and Inflammatory Bowel Disease: A Mini Review. Mediators Inflamm 2020; 2020:9706140. [PMID: 32617076 PMCID: PMC7306093 DOI: 10.1155/2020/9706140] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 05/26/2020] [Indexed: 02/06/2023] Open
Abstract
Inflammatory bowel disease (IBD) is a chronic inflammatory disorder of the gastrointestinal tract resulting from the homeostasis imbalance of intestinal microenvironment, immune dysfunction, environmental and genetic factors, and so on. This disease is associated with multiple immune cells including regulatory T cells (Tregs). Tregs are a subset of T cells regulating the function of various immune cells to induce immune tolerance and maintain intestinal immune homeostasis. Tregs are correlated with the initiation and progression of IBD; therefore, strategies that affect the differentiation and function of Tregs may be promising for the prevention of IBD-associated pathology. It is worth noting that tryptophan (Trp) metabolism is effective in inducing the differentiation of Tregs through microbiota-mediated degradation and kynurenine pathway (KP), which is important for maintaining the function of Tregs. Interestingly, patients with IBD show Trp metabolism disorder in the pathological process, including changes in the concentrations of Trp and its metabolites and alteration in the activities of related catalytic enzymes. Thus, manipulation of Treg differentiation through Trp metabolism may provide a potential target for prevention of IBD. The purpose of this review is to highlight the relationship between Trp metabolism and Treg differentiation and the role of this interaction in the pathogenesis of IBD.
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Saikosaponin-d ameliorates dextran sulfate sodium-induced colitis by suppressing NF-κB activation and modulating the gut microbiota in mice. Int Immunopharmacol 2020; 81:106288. [PMID: 32062075 DOI: 10.1016/j.intimp.2020.106288] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 01/05/2020] [Accepted: 02/02/2020] [Indexed: 12/12/2022]
Abstract
Saikosaponin-d (SSd), extracts from Bupleurum falcatum L, exhibits anti-inflammatory and anti-infectious activities. However, the effect of SSd on intestinal inflammation has not been investigated. The aim of this study was to evaluate the effect of SSd on dextran sulfate sodium (DSS)-induced ulcerative colitis (UC) mice, and to elucidate the underlying mechanisms. UC was induced in mice by administrating 3% DSS in drinking water for 7 days. SSd (4 mg/kg and 8 mg/kg) was administered by gavage every day during the experimental process. The results showed that SSd treatment (8 mg/kg) significantly ameliorated UC mice by decreasing disease activity index (DAI), increasing colon length and improving pathological characteristics. SSd treatment (8 mg/kg) significantly suppressed the mRNA levels of pro-inflammatory cytokines including TNF-α, IL-6 and IL-1β, increased that of anti-inflammatory cytokine IL-10. Furthermore, SSd (8 mg/kg) suppressed the activation of NF-κB by decreasing the degradation and phosphorylation of IκB. SSd (8 mg/kg) also protected the intestinal barrier by increasing the mRNA levels of mucin (Muc1 and Muc2) and the protein levels of zonula occludens-1 (ZO-1) and Claudin-1. The 16S rDNA gene high-throughput sequencing revealed that SSd treatment (8 mg/kg) increased the alpha diversity and regulated the structure of gut microbiota in UC mice. Taken together, our findings demonstrated that SSd (8 mg/kg) improved DSS-induced intestinal inflammation by inhibiting NF-κB activation and regulated the gut microbiota.
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15
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Fang Z, Li L, Zhao J, Zhang H, Lee YK, Lu W, Chen W. Bifidobacteria adolescentis regulated immune responses and gut microbial composition to alleviate DNFB-induced atopic dermatitis in mice. Eur J Nutr 2019; 59:3069-3081. [PMID: 31786642 DOI: 10.1007/s00394-019-02145-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 11/11/2019] [Indexed: 12/23/2022]
Abstract
PURPOSE Emerging studies have reported gut microbial composition plays a key role in alleviating AD clinical symptoms during the probiotic intervention, but the correlation among clinical symptoms, immune responses and gut microbial alteration needs to be explored. Therefore, the objective was to investigate the correlation during Bifidobacterium adolescentis intervention in DNFB-induced AD mice. METHODS The mice were randomly divided into nine groups and fed B. adolescentis for 3 weeks. At the end of the experiment, clinical and immune indicators were assessed. Flow cytometry was performed to explore the effect of B. adolescentis on regulatory T cells in the spleen. V3-V4 region of the 16S ribosomal RNA (rRNA) gene was sequenced to evaluate changes in the gut microbiota. RESULTS Bifidobacteria adolescentis treatments reduced ear and skin thickness and suppressed eosinophils and mast cells infiltration. Th1- and Th2-type responses were regulated and the Tregs population was promoted in the spleen by B. adolescentis treatments. Bifidobacteria adolescentis increased the relative abundance of Lactobacillus but decrease Dorea and Pediococcus. Propionic and butyric acids were increased but isovaleric acid was decreased by B. adolescentis treatment. Besides, the functional modules, such as fatty acid biosynthesis, antigen processing and presentation were upregulated by B. adolescentis Ad1 treatment compared to the DNFB group. CONCLUSION Collectively, these results imply that B. adolescentis with the role of immunomodulation promotes Treg differentiation and suppresses Th2 responses, and increases the proportion of Lactobacillus that is positively correlated to increase in propionic acid production, and thus has the potential for AD amelioration.
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Affiliation(s)
- Zhifeng Fang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China.,School of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China
| | - Lingzhi Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China.,School of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China
| | - Jianxian Zhao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China.,School of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China.,(Yangzhou) Institute of Food Biotechnology, Jiangnan University, Yangzhou, 225004, China
| | - Hao Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China.,School of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China.,National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, 214122, Jiangsu, China.,Wuxi Translational Medicine Research Center and Jiangsu Translational Medicine Research Institut Wuxi Branch, Wuxi, 214122, Jiangsu, China.,(Yangzhou) Institute of Food Biotechnology, Jiangnan University, Yangzhou, 225004, China
| | - Yuan-Kun Lee
- Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Wenwei Lu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China. .,School of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China. .,National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, 214122, Jiangsu, China. .,(Yangzhou) Institute of Food Biotechnology, Jiangnan University, Yangzhou, 225004, China.
| | - Wei Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China.,School of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China.,National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, 214122, Jiangsu, China.,Beijing Innovation Centre of Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing, 100048, China
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16
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Phloretin ameliorates dextran sulfate sodium-induced ulcerative colitis in mice by regulating the gut microbiota. Pharmacol Res 2019; 150:104489. [PMID: 31689519 DOI: 10.1016/j.phrs.2019.104489] [Citation(s) in RCA: 160] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Revised: 10/04/2019] [Accepted: 10/10/2019] [Indexed: 02/06/2023]
Abstract
Phloretin, extracted from the pericarp and velamen of apples or pears, is a dihydrochalcone flavonoid with anti-bacterial and anti-inflammatory activities. It has been reported that phloretin has anti-inflammatory effects in ulcerative colitis (UC) mice. However, the role of the gut microbiota in the phloretin anti-UC process remains unclear. In this study, we observed that the anti-UC effect of phloretin was affected by co-housing, probably because of the transmissible nature of the gut micobiota. Through fecal micobiota transplantation (FMT), the effects of the gut microbiota on the anti-UC of phloretin were further confirmed. UC was induced in mice by administrating 3% dextran sulfate sodium (DSS) in drinking water for 7 days. Phloretin (60 mg/kg) was administered by gavage every day during the experiment. Fecal microbes (109 CFU/mL) from phloretin-treated UC mice were administered by gavage to non-phloretin-treated UC mice for 7 days. The results showed that FMT, like phloretin, ameliorated UC by improving disease symptoms and colon inflammation, balancing inflammatory cytokines, maintaining intestinal barrier integrity, restoring systemic immune function, inhibiting NF-κB and NLRP3 inflammasome activation and ameliorating the oxidant stress. Both FMT and phloretin treatment increased the levels of Bacteroidetes, Alistipes and Lactobacillus and decreased those of Firmicutes, Oscillibacter and Ruminiclostridium_6. Correlation analysis between gut microbes and micro-environmental factors revealed that Alistipes abundance was negatively correlated with DAI, pathological score, and TNF-α, IL-6 and IL-1β levels, and Alistipes was more abundant in phloretin or FMT treated UC mice. Oscillibacter abundance was significantly positively correlated with IL-6 and IL-1β levels and pathological score, and Oscillibacter was increased in UC mice. Furthermore, network analysis of the dominant genera revealed that Alistipes abundance was negatively related to Oscillibacter abundance. In conclusion, this study suggests that the anti-UC effects of phloretin are achieved through regulation of the gut microbiota and phloretin has the potential to be developed as a promising agent for the treatment of UC.
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Functional reprogramming of regulatory T cells in the absence of Foxp3. Nat Immunol 2019; 20:1208-1219. [PMID: 31384057 PMCID: PMC6707855 DOI: 10.1038/s41590-019-0442-x] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 06/06/2019] [Indexed: 01/25/2023]
Abstract
Regulatory T cells (Treg cells) deficient in the transcription factor Foxp3 lack suppressor function and manifest an effector T (Teff) cell-like phenotype. We demonstrate that Foxp3 deficiency dysregulates metabolic checkpoint kinase mammalian target of rapamycin (mTOR) complex 2 (mTORC2) signaling and gives rise to augmented aerobic glycolysis and oxidative phosphorylation. Specific deletion of the mTORC2 adaptor gene Rictor in Foxp3-deficient Treg cells ameliorated disease in a Foxo1 transcription factor-dependent manner. Rictor deficiency re-established a subset of Treg cell genetic circuits and suppressed the Teff cell-like glycolytic and respiratory programs, which contributed to immune dysregulation. Treatment of Treg cells from patients with FOXP3 deficiency with mTOR inhibitors similarly antagonized their Teff cell-like program and restored suppressive function. Thus, regulatory function can be re-established in Foxp3-deficient Treg cells by targeting their metabolic pathways, providing opportunities to restore tolerance in Treg cell disorders.
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18
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Luo XY, Zhou H, Wang SY, Xiong J, Mo CF, Guo HJ, Wang YT, Yang SX, Li LM, Zou Q, Liu Y. A benzoxazole derivative PO-296 inhibits T lymphocyte proliferation by the JAK3/STAT5 signal pathway. J Cell Biochem 2018; 120:9193-9202. [PMID: 30506723 DOI: 10.1002/jcb.28195] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 11/12/2018] [Indexed: 01/01/2023]
Abstract
Immunosuppressants have shown striking achievements in treating autoimmune diseases in recent years. It is urgent to develop more immunosuppressants to provide more options for patients. PO-296 [2-(6-chlorobenzo[d]oxazol-2-yl)-4,5,6,7-tetrahydro-2H-indazol-3-ol] was identified as a novel benzoxazole derivative. We observed that it exhibits an obvious immunosuppressive activity to T lymphocytes. PO-296 significantly inhibited the proliferation of activated human T lymphocyte without cytotoxicity. Moreover, PO-296 did not affect the expression of cluster of differentiation (CD)-25 or CD69 but induced T lymphocyte cycle arrest in the G0/G1 phase. Furthermore, PO-296 inhibited interleukin (IL)-6, IL-17, and interferon gamma expression but had no effect on IL-2, IL-4, or IL-10. Yet, importantly, PO-296 inhibited the phosphorylation of signal transducer and activator of transcription 5 (STAT5), increased the phosphorylation of p70S6K, but did not affect the phosphoinositide 3-kinase (PI3K)/protein kinase B (Akt)/mitogen-activated protein kinase pathway. In conclusion, these findings indicate that PO-296 inhibits human activated T-lymphocyte proliferation by affecting the janus kinase 3 (JAK3)/STAT5 pathway. PO-296 possesses a potential lead compound for the design and development of new immunosuppressants for the treatment of autoimmune diseases.
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Affiliation(s)
- Xing-Yan Luo
- Basic Medical College, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China.,Center of Science and Research, Chengdu Medical College, Chengdu, Sichuan, China
| | - Hong Zhou
- Center of Science and Research, Chengdu Medical College, Chengdu, Sichuan, China.,Development of Radiology, The Second People's Hospital of Shanwei City, Guangzhou, Shanwei, China
| | - Si-Yu Wang
- Center of Science and Research, Chengdu Medical College, Chengdu, Sichuan, China
| | - Jing Xiong
- Center of Science and Research, Chengdu Medical College, Chengdu, Sichuan, China
| | - Chun-Fen Mo
- Center of Science and Research, Chengdu Medical College, Chengdu, Sichuan, China
| | - Hui-Jie Guo
- Center of Science and Research, Chengdu Medical College, Chengdu, Sichuan, China
| | - Yan-Tang Wang
- Center of Science and Research, Chengdu Medical College, Chengdu, Sichuan, China
| | - Shu-Xia Yang
- Center of Science and Research, Chengdu Medical College, Chengdu, Sichuan, China
| | - Li-Mei Li
- Center of Science and Research, Chengdu Medical College, Chengdu, Sichuan, China
| | - Qiang Zou
- Basic Medical College, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China.,Center of Science and Research, Chengdu Medical College, Chengdu, Sichuan, China
| | - Yang Liu
- Center of Science and Research, Chengdu Medical College, Chengdu, Sichuan, China.,Development and Regeneration Key Laboratory of Sichuan Province, Chengdu Medical College, Chengdu, Sichuan, China
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19
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Jeschke JC, Mayne CG, Ziegelbauer J, DeCiantis CL, Singh S, Kumar SN, Suchi M, Iwakura Y, Drobyski WR, Salzman NH, Williams CB. A model of TH17-associated ileal hyperplasia that requires both IL-17A and IFNγ to generate self-tolerance and prevent colitis. Mucosal Immunol 2018; 11:1127-1137. [PMID: 29728642 PMCID: PMC6571016 DOI: 10.1038/s41385-018-0023-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 03/03/2018] [Accepted: 03/09/2018] [Indexed: 02/04/2023]
Abstract
Homeostasis in the ileum, which is commonly disrupted in patients with Crohn's disease, involves ongoing immune responses. To study how homeostatic processes of the ileum impact CD4+T cell responses, we used TCR transgenic tools to breed mice that spontaneously produced CD4+T cells reactive to an antigen expressed in the ileum. At an early age, the ilea of these mice exhibit crypt hyperplasia and accumulate increased numbers of TH17 cells bearing non-transgenic clonotypes. Half of these mice subsequently developed colitis linked to broad mucosal infiltration by TH17 and TH1 cells expressing non-transgenic clonotypes, chronic wasting disease and loss of ileal crypt hyperplasia. By contrast, adult mice with normal growth continued to exhibit TH17-associated ileal crypt hyperplasia and additionally accumulated ileal-reactive Treg cells. Both IL-17A and IFNγ were protective, as their deficiency precluded ileal-reactive Treg accumulation and exacerbated colitic disease. IL-23R blockade prevented progression to colitis, whereas nTreg cell transfers prevented colitic disease, ileal crypt hyperplasia and ileal-reactive Treg accumulation. Thus, our studies identify an IL-17A and IFNγ-dependent homeostatic process that mobilizes ileal-reactive Treg cells and is disrupted by IL-23.
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Affiliation(s)
- Jonathan C. Jeschke
- Section of Rheumatology, Department of Pediatrics, Medical College of Wisconsin, Milwaukee WI, 53226
| | - Christopher G. Mayne
- Section of Rheumatology, Department of Pediatrics, Medical College of Wisconsin, Milwaukee WI, 53226
| | - Jennifer Ziegelbauer
- Section of Rheumatology, Department of Pediatrics, Medical College of Wisconsin, Milwaukee WI, 53226
| | - Christopher L. DeCiantis
- Section of Rheumatology, Department of Pediatrics, Medical College of Wisconsin, Milwaukee WI, 53226
| | - Selina Singh
- Section of Rheumatology, Department of Pediatrics, Medical College of Wisconsin, Milwaukee WI, 53226
| | - Suresh N. Kumar
- Division of Pediatric Pathology, Department of Pathology, Medical College of Wisconsin, Milwaukee WI, 53226
| | - Mariko Suchi
- Division of Pediatric Pathology, Department of Pathology, Medical College of Wisconsin, Milwaukee WI, 53226
| | - Yoichiro Iwakura
- Research Institute for Biomedical Sciences, Tokyo University of Science, Chiba 278-0022, Japan; Core Research for Evolutionary Science and Technology, Japan Science and Technology Agency, Saitama 332-0012, Japan
| | - William R. Drobyski
- Bone Marrow Transplant Program, Department of Medicine, Medical College of Wisconsin, Milwaukee WI, 53226
| | - Nita H Salzman
- Section of Gastroenterology, Department of Pediatrics, Medical College of Wisconsin, Milwaukee WI, 53226
| | - Calvin B. Williams
- Section of Rheumatology, Department of Pediatrics, Medical College of Wisconsin, Milwaukee WI, 53226,Correspondence should be addressed to C.B.W. (), Calvin B. Williams, M.D., Ph.D., Department of Pediatrics, Medical College of Wisconsin, 8701 Watertown Plank Road, MFRC Room 5052, Milwaukee WI 53226, Phone: 414-456-4343, Fax: 414-266-6695
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20
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Li Y, Qiu Q, Fan Z, He P, Chen H, Jiao X. Th17 cytokine profiling of colorectal cancer patients with or without enterovirus 71 antigen expression. Cytokine 2018; 107:35-42. [PMID: 29175261 DOI: 10.1016/j.cyto.2017.11.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 11/05/2017] [Accepted: 11/17/2017] [Indexed: 02/07/2023]
Abstract
OBJECT Th17 cytokines have been identified in several types of human cancers. In this pilot study, the expression of Th17 cytokines profiling in enteroviruses 71 (EV71) associated colorectal cancer (CRC) were explored. METHODS 66 patients with CRC were enrolled in this study; immune- histochemical analyses were performed on cancerous tissues and adjacent non- cancerous tissues of the patients. Serum Th17 cytokines of CRC patients and healthy controls were measured using a Luminex 200 analyzer. RESULTS Cancerous tissues had more positive EV71 antigen expression than adjacent non- cancerous tissues. In TNM II-III CRC, 59.9% of cancerous tissues were observed to be EV71 positive; on the contrary, 65.2% of the adjacent non- cancerous epithelium was EV71 negative. In TNM I CRC, all adjacent non- cancerous epithelium was virus negative, but in TNM IV, half of adjacent non- cancerous tissues were virus positive. Serum IL-10 were significantly higher in CRC patients than in healthy controls, and IL-10 concentrations in the EV71 positive group were higher than those of the EV71 negative group, with the highest IL-10 levels being observed in CRC patients with strong positive group (P < 0.05). Similar results were found for IL-21 and IL-23. IL-17 levels were higher in CRC patients than in healthy controls, there was no significant difference in IL-17 between the viral positive and viral negative groups (P > 0.05). CONCLUSION Persistent existing EV71 viral antigens in intestinal tissues are positively associated with TNM III/IV CRC. EV71 latent infection recruits Th17 cells in the colorectal tumor site, stimulating Th17 cytokine production that closely associated with CRC carcinogenesis.
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Affiliation(s)
- Yazhen Li
- Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong, 515041, China.
| | - Qiancheng Qiu
- The first affiliated hospital of Shantou University Medical College, Shantou, Guangdong, 515041, China.
| | - Zhiqiang Fan
- Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong, 515041, China.
| | - Ping He
- Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong, 515041, China.
| | - Huanzhu Chen
- Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong, 515041, China.
| | - Xiaoyang Jiao
- Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong, 515041, China.
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21
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Do JS, Zhong F, Huang AY, Van't Hof WJ, Finney M, Laughlin MJ. Foxp3 expression in induced T regulatory cells derived from human umbilical cord blood vs. adult peripheral blood. Bone Marrow Transplant 2018; 53:1568-1577. [PMID: 29743573 DOI: 10.1038/s41409-018-0205-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 04/09/2018] [Accepted: 04/11/2018] [Indexed: 12/23/2022]
Abstract
Foxp3 is essential for T regulatory cell (Treg) function. Broad complex-Tramtrack-Bric-a-brac domain (BTB) and Cap'n'collar (CNC) homology 1, transcription factor 2 (BACH2) stabilizes Treg immune homeostasis in murine studies. However, little is known regarding what role, if any, BACH2 may have in Foxp3 regulation in human-induced Treg (iTreg). We examined Foxp3 expression and regulation comparing iTreg differentiated from umbilical cord blood (UCB) vs. adult blood (AB) naive CD4+ T-cells. Foxp3 expression was higher in UCB vs. AB-derived iTreg, and was sustained during 21-day expansion in vitro. The number of Foxp3+ iTreg generated from UCB vs. AB naive CD4+ T-cells was higher in iTreg differentiation conditions. In addition, UCB iTreg were more potent in suppressing T-cell proliferation compared to AB iTreg. Naive UCB CD4+ T-cells highly expressed BACH2 protein compared to AB. Putative transcriptional BACH2 binding sites were identified at the Foxp3 promoter, using BACH2 consensus sequence. Cross-linking chromatin immunoprecipitation (ChIP) showed that BACH2 binds to the Foxp3 proximal promoter in UCB iTreg, but not AB iTreg. BACH2 was transcriptionally active, as shRNA-mediated BACH2 knockdown resulted in reduction of Foxp3 gene transcription in UCB CD4+ T-cells. In summary, BACH2 serves to stabilize robust Foxp3 expression in UCB CD4+ T-cell-derived iTreg.
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Affiliation(s)
- Jeong-Su Do
- Cleveland Cord Blood Center, Cleveland, OH, USA. .,Case Western Reserve University, Cleveland, OH, USA.
| | - Fei Zhong
- Cleveland Cord Blood Center, Cleveland, OH, USA
| | - Alex Y Huang
- Case Western Reserve University, Cleveland, OH, USA
| | | | | | - Mary J Laughlin
- Cleveland Cord Blood Center, Cleveland, OH, USA.,Case Western Reserve University, Cleveland, OH, USA
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The Role, Involvement and Function(s) of Interleukin-35 and Interleukin-37 in Disease Pathogenesis. Int J Mol Sci 2018; 19:ijms19041149. [PMID: 29641433 PMCID: PMC5979316 DOI: 10.3390/ijms19041149] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 03/01/2018] [Accepted: 03/04/2018] [Indexed: 12/12/2022] Open
Abstract
The recently identified cytokines-interleukin (IL)-35 and interleukin (IL)-37-have been described for their anti-inflammatory and immune-modulating actions in numerous inflammatory diseases, auto-immune disorders, malignancies, infectious diseases and sepsis. Either cytokine has been reported to be reduced and in some cases elevated and consequently contributed towards disease pathogenesis. In view of the recent advances in utilizing cytokine profiles for the development of biological macromolecules, beneficial in the management of certain intractable immune-mediated disorders, these recently characterized cytokines (IL-35 and IL-37) offer potential as reasonable targets for the discovery of novel immune-modulating anti-inflammatory therapies. A detailed comprehension of their sophisticated regulatory mechanisms and patterns of expression may provide unique opportunities for clinical application as highly selective and target specific therapeutic agents. This review seeks to summarize the recent advancements in discerning the dynamics, mechanisms, immunoregulatory and anti-inflammatory actions of IL-35 and IL-37 as they relate to disease pathogenesis.
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23
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Egarnes B, Gosselin J. Contribution of Regulatory T Cells in Nucleotide-Binding Oligomerization Domain 2 Response to Influenza Virus Infection. Front Immunol 2018; 9:132. [PMID: 29445379 PMCID: PMC5797787 DOI: 10.3389/fimmu.2018.00132] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 01/16/2018] [Indexed: 01/26/2023] Open
Abstract
Influenza A virus (IAV) is recognized to cause severe pulmonary illnesses in humans, particularly in elderly and children. One of the features associated with IAV infection is an excessive lung inflammation due to an uncontrolled immune response. The nucleotide-binding oligomerization domain 2 (NOD2) receptor is known to recognize ssRNA viruses such as IAV, but its role in the inflammatory process during viral infections remains to be clarified. In a previous report, we have shown that activation of NOD2 with muramyl dipeptide (MDP) significantly reduces both viral loads and lung inflammation and also improves pulmonary function during IAV infection. These findings prompted us to further investigate whether NOD2 receptor may contribute to regulate inflammation during viral infection. In the present study, we show that administration of MDP to mice infected with IAV stimulates the migration of regulatory T (Treg) cells to the lungs. Such a presence of Treg cells was also accompanied with a reduction of neutrophils in the lungs during IAV infection, which correlated, with a significant decrease of Th17 cells. In our model, Treg cell recruitment is dependent of CXCL12 and CCL5 chemokines. Moreover, we show that the presence of Ly6Clow patrolling monocytes is required for Treg cells mobilization to the lung of mice treated with MDP. In fact, following monocyte depletion by administration of clodronate liposome, mobilization of Treg cells to the lungs of treated mice was found to occur when circulating Ly6Clow monocytes begin to reemerge. In addition, we also detected an increased production of TGF-β, a cytokine contributing to Treg activity when blood Ly6Clow monocytes are restored. Together, our results demonstrate that MDP treatment can promote an anti-inflammatory environment through the mobilization of Treg cells to the lung, a mechanism that requires the presence of Ly6Clow monocytes during IAV infection. Overall, our results suggest that activation of NOD2 receptor could be an appealing approach to control pulmonary inflammation in patients infected with IAV.
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Affiliation(s)
- Benoit Egarnes
- Laboratory of Innate Immunology, Centre de recherche du CHU de Québec-Université Laval, Université Laval, Quebec City, QC, Canada
| | - Jean Gosselin
- Laboratory of Innate Immunology, Centre de recherche du CHU de Québec-Université Laval, Université Laval, Quebec City, QC, Canada.,Department of Molecular Medicine, Université Laval, Quebec City, QC, Canada
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24
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Xu K, Yang WY, Nanayakkara GK, Shao Y, Yang F, Hu W, Choi ET, Wang H, Yang X. GATA3, HDAC6, and BCL6 Regulate FOXP3+ Treg Plasticity and Determine Treg Conversion into Either Novel Antigen-Presenting Cell-Like Treg or Th1-Treg. Front Immunol 2018; 9:45. [PMID: 29434588 PMCID: PMC5790774 DOI: 10.3389/fimmu.2018.00045] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Accepted: 01/08/2018] [Indexed: 12/17/2022] Open
Abstract
We conducted an experimental database analysis to determine the expression of 61 CD4+ Th subset regulators in human and murine tissues, cells, and in T-regulatory cells (Treg) in physiological and pathological conditions. We made the following significant findings: (1) adipose tissues of diabetic patients with insulin resistance upregulated various Th effector subset regulators; (2) in skin biopsy from patients with psoriasis, and in blood cells from patients with lupus, effector Th subset regulators were more upregulated than downregulated; (3) in rosiglitazone induced failing hearts in ApoE-deficient (KO) mice, various Th subset regulators were upregulated rather than downregulated; (4) aortic endothelial cells activated by proatherogenic stimuli secrete several Th subset-promoting cytokines; (5) in Treg from follicular Th (Tfh)-transcription factor (TF) Bcl6 KO mice, various Th subset regulators were upregulated; whereas in Treg from Th2-TF GATA3 KO mice and HDAC6 KO mice, various Th subset regulators were downregulated, suggesting that Bcl6 inhibits, GATA3 and HDAC6 promote, Treg plasticity; and (6) GATA3 KO, and Bcl6 KO Treg upregulated MHC II molecules and T cell co-stimulation receptors, suggesting that GATA3 and BCL6 inhibit Treg from becoming novel APC-Treg. Our data implies that while HDAC6 and Bcl6 are important regulators of Treg plasticity, GATA3 determine the fate of plastic Tregby controlling whether it will convert in to either Th1-Treg or APC-T-reg. Our results have provided novel insights on Treg plasticity into APC-Treg and Th1-Treg, and new therapeutic targets in metabolic diseases, autoimmune diseases, and inflammatory disorders.
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Affiliation(s)
- Keman Xu
- Center for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States.,Center for Cardiovascular Research & Thrombosis Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - William Y Yang
- Center for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States.,Center for Cardiovascular Research & Thrombosis Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Gayani Kanchana Nanayakkara
- Center for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States.,Center for Cardiovascular Research & Thrombosis Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Ying Shao
- Center for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States.,Center for Cardiovascular Research & Thrombosis Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Fan Yang
- Center for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Wenhui Hu
- Center for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States.,Department of Pathology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Eric T Choi
- Center for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States.,Department of Surgery, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Hong Wang
- Center for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States.,Department of Pharmacology, Microbiology and Immunology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Xiaofeng Yang
- Center for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States.,Center for Cardiovascular Research & Thrombosis Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States.,Department of Pharmacology, Microbiology and Immunology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
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25
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Forgiarini SGI, da Rosa DP, Forgiarini LF, Teixeira C, Andrade CF, Forgiarini LA, Felix EA, Friedman G. Evaluation of systemic inflammation in patients being weaned from mechanical ventilation. Clinics (Sao Paulo) 2018; 73:e256. [PMID: 29924185 PMCID: PMC5996438 DOI: 10.6061/clinics/2018/e256] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Accepted: 12/15/2017] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVES The aim of this study was to evaluate systemic inflammatory factors and their relation to success or failure in a spontaneous ventilation test. METHODS This cross-sectional study included a sample of 54 adult patients. Demographic data and clinical parameters were collected, and blood samples were collected in the first minute of the spontaneous ventilation test to evaluate interleukin (IL)-1β, IL-6, IL-8, and IL-10, tumour necrosis factor alpha (TNFα) and C-reactive protein. RESULTS Patients who experienced extubation failure presented a lower rapid shallow breathing index than those who passed, and these patients also showed a significant increase in C-reactive protein 48 hours after extubation. We observed, moreover, that each unit increase in inflammatory factors led to a higher risk of spontaneous ventilation test failure, with a risk of 2.27 (1.001 - 4.60, p=0.049) for TNFα, 2.23 (1.06 - 6.54, p=0.037) for IL-6, 2.66 (1.06 - 6.70, p=0.037) for IL-8 and 2.08 (1.01 - 4.31, p=0.04) for IL-10, and the rapid shallow breathing index was correlated with IL-1 (r=-0.51, p=0.04). CONCLUSIONS C-reactive protein is increased in patients who fail the spontaneous ventilation test, and increased ILs are associated with a greater prevalence of failure in this process; the rapid shallow breathing index may not be effective in patients who present systemic inflammation.
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Affiliation(s)
| | | | | | | | | | | | | | - Gilberto Friedman
- Programa de Pos-Graduacao em Ciencias Pneumologicas, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, BR
- *Corresponding Author. E-mail:
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26
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Abstract
Curcumin is a polyphenol natural product isolated from turmeric, interacting with different cellular and molecular targets and, consequently, showing a wide range of pharmacological effects. Recent preclinical and clinical trials have revealed immunomodulatory properties of curcumin that arise from its effects on immune cells and mediators involved in the immune response, such as various T-lymphocyte subsets and dendritic cells, as well as different inflammatory cytokines. Systemic lupus erythematosus (SLE) is an inflammatory, chronic autoimmune-mediated disease characterized by the presence of autoantibodies, deposition of immune complexes in various organs, recruitment of autoreactive and inflammatory T cells, and excessive levels of plasma proinflammatory cytokines. The function and numbers of dendritic cells and T cell subsets, such as T helper 1 (Th1), Th17, and regulatory T cells have been found to be significantly altered in SLE. In the present report, we reviewed the results of in vitro, experimental (pre-clinical), and clinical studies pertaining to the modulatory effects that curcumin produces on the function and numbers of dendritic cells and T cell subsets, as well as relevant cytokines that participate in SLE.
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27
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Sun X, He S, Lv C, Sun X, Wang J, Zheng W, Wang D. Analysis of murine and human Treg subsets in inflammatory bowel disease. Mol Med Rep 2017; 16:2893-2898. [PMID: 28677759 DOI: 10.3892/mmr.2017.6912] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2016] [Accepted: 04/25/2017] [Indexed: 11/06/2022] Open
Abstract
Previous studies have indicated that regulatory T cells serve essential roles in maintaining intestinal homeostasis, however, the role of different Treg subsets in modulating inflammatory bowel disease has still not been addressed clearly. In the present study, the authors measured the percentage of Foxp3+ IL‑10+ TGF‑β+ natural Tregs, Foxp3‑ IL‑10+ TGF‑β‑ induced Tregs, CD127‑ induced Tregs and CD8+ Tregs at different time points in DSS‑induced experimental colitis model in murine lamina propria lymphocytes, mesenteric lymph node and peripheral blood. In addition, the authors compared the frequency of four Treg subsets in patients diagnosed of ulcerative colitis at different stages with enrolled healthy controls. The percentage of Foxp3+ IL‑10+ TGF‑β+ natural Tregs decreased in acute stage of both human and mice was observed, but proliferated significantly during remittent stage. Foxp3‑ IL‑10+ TGF‑β‑ inducible (i) Treg and CD127‑ iTreg was observed as being significantly decreased percentage in LPL at 4 and 7 days, the frequency of Foxp3‑ IL‑10+ TGF‑β‑ iTreg cells became decreased and CD127‑ iTreg only slightly increased at the chronic stage following DSS induction. However, the proportion of both Foxp3‑ IL‑10+ TGF‑β‑ iTreg and CD127‑ iTreg was nearly unchanged in human IBD. Although intestinal inflammation decreased the percentage of CD8+ Tregs, it remained lower in the remittent stage of human IBD. Only enhanced proliferation of lamina propria lymphocytes‑derived CD8+ Treg was reported at 7 days in dextran sodium sulfate‑induced murine colitis. The results demonstrated that Foxp3+ IL‑10+ TGF‑β+ natural Tregs may serve an essential role in exhibiting suppressive and protecting from immune‑related mucosal injury during chronic stage in inflammatory bowel disease.
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Affiliation(s)
- Xiaoyun Sun
- Department of Immunology, School of Basic Medical Science, China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Shaoheng He
- Allergy and Clinical Immunology Research Centre, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning 121001, P.R. China
| | - Changlong Lv
- Department of Immunology, School of Basic Medical Science, China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Xun Sun
- Department of Immunology, School of Basic Medical Science, China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Junling Wang
- Allergy and Clinical Immunology Research Centre, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning 121001, P.R. China
| | - Wenjiao Zheng
- Allergy and Clinical Immunology Research Centre, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning 121001, P.R. China
| | - Danan Wang
- Department of Immunology, School of Basic Medical Science, China Medical University, Shenyang, Liaoning 110001, P.R. China
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28
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Aziz M, Holodick NE, Rothstein TL, Wang P. B-1a Cells Protect Mice from Sepsis: Critical Role of CREB. THE JOURNAL OF IMMUNOLOGY 2017. [PMID: 28630091 DOI: 10.4049/jimmunol.1602056] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Bacterial sepsis is a serious life-threatening condition caused by an excessive immune response to infection. B-1 cells differ from conventional B-2 cells by their distinct phenotype and function. A subset of B-1 cells expressing CD5, known as B-1a cells, exhibits innate immune activity. Here we report that B-1a cells play a beneficial role in sepsis by mitigating exaggerated inflammation through a novel mechanism. Using a mouse model of bacterial sepsis, we found that the numbers of B-1a cells in various anatomical locations were significantly decreased. Adoptive transfer of B-1a cells into septic mice significantly attenuated systemic inflammation and improved survival, whereas B-1a cell-deficient CD19-/- mice were more susceptible to infectious inflammation and mortality. We also demonstrated B-1a cells produced ample amounts of IL-10 which controlled excessive inflammation and the mice treated with IL-10-deficient B-1a cells were not protected against sepsis. Moreover, we identified a novel intracellular signaling molecule, cAMP-response element binding protein (CREB), which serves as a pivotal transcription factor for upregulating IL-10 production by B-1a cells in sepsis through its nuclear translocation and binding to putative responsive elements on IL-10 promoter. Thus, the benefit of B-1a cells in bacterial sepsis is mediated by CREB and the identification of CREB in B-1a cells reveals a potential avenue for treatment in bacterial sepsis.
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Affiliation(s)
- Monowar Aziz
- Center for Immunology and Inflammation, Feinstein Institute for Medical Research, Manhasset, NY 11030; and
| | - Nichol E Holodick
- Karches Center for Oncology Research, Feinstein Institute for Medical Research, Manhasset, NY 11030
| | - Thomas L Rothstein
- Karches Center for Oncology Research, Feinstein Institute for Medical Research, Manhasset, NY 11030
| | - Ping Wang
- Center for Immunology and Inflammation, Feinstein Institute for Medical Research, Manhasset, NY 11030; and
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29
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van Bilsen JHM, Sienkiewicz-Szłapka E, Lozano-Ojalvo D, Willemsen LEM, Antunes CM, Molina E, Smit JJ, Wróblewska B, Wichers HJ, Knol EF, Ladics GS, Pieters RHH, Denery-Papini S, Vissers YM, Bavaro SL, Larré C, Verhoeckx KCM, Roggen EL. Application of the adverse outcome pathway (AOP) concept to structure the available in vivo and in vitro mechanistic data for allergic sensitization to food proteins. Clin Transl Allergy 2017; 7:13. [PMID: 28507730 PMCID: PMC5429547 DOI: 10.1186/s13601-017-0152-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 05/03/2017] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND The introduction of whole new foods in a population may lead to sensitization and food allergy. This constitutes a potential public health problem and a challenge to risk assessors and managers as the existing understanding of the pathophysiological processes and the currently available biological tools for prediction of the risk for food allergy development and the severity of the reaction are not sufficient. There is a substantial body of in vivo and in vitro data describing molecular and cellular events potentially involved in food sensitization. However, these events have not been organized in a sequence of related events that is plausible to result in sensitization, and useful to challenge current hypotheses. The aim of this manuscript was to collect and structure the current mechanistic understanding of sensitization induction to food proteins by applying the concept of adverse outcome pathway (AOP). MAIN BODY The proposed AOP for food sensitization is based on information on molecular and cellular mechanisms and pathways evidenced to be involved in sensitization by food and food proteins and uses the AOPs for chemical skin sensitization and respiratory sensitization induction as templates. Available mechanistic data on protein respiratory sensitization were included to fill out gaps in the understanding of how proteins may affect cells, cell-cell interactions and tissue homeostasis. Analysis revealed several key events (KE) and biomarkers that may have potential use in testing and assessment of proteins for their sensitizing potential. CONCLUSION The application of the AOP concept to structure mechanistic in vivo and in vitro knowledge has made it possible to identify a number of methods, each addressing a specific KE, that provide information about the food allergenic potential of new proteins. When applied in the context of an integrated strategy these methods may reduce, if not replace, current animal testing approaches. The proposed AOP will be shared at the www.aopwiki.org platform to expand the mechanistic data, improve the confidence in each of the proposed KE and key event relations (KERs), and allow for the identification of new, or refinement of established KE and KERs.
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Affiliation(s)
| | | | | | | | | | - Elena Molina
- Instituto de Investigación en Ciencias de la Alimentación, Madrid, Spain
| | | | - Barbara Wróblewska
- Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, Olsztyn, Poland
| | - Harry J Wichers
- Wageningen University and Research, Wageningen, The Netherlands
| | - Edward F Knol
- University Medical Center Utrecht, Utrecht, The Netherlands
| | | | | | | | | | - Simona L Bavaro
- Institute of Sciences of Food Production, National Research Council, Bari, Italy
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30
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Zwang NA, Leventhal JR. Cell Therapy in Kidney Transplantation: Focus on Regulatory T Cells. J Am Soc Nephrol 2017; 28:1960-1972. [PMID: 28465379 DOI: 10.1681/asn.2016111206] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Renal transplantation is the renal replacement modality of choice for suitable candidates with advanced CKD or ESRD. Prevention of rejection, however, requires treatment with nonspecific pharmacologic immunosuppressants that carry both systemic and nephrologic toxicities. Use of a patient's own suppressive regulatory T cells (Tregs) is an attractive biologic approach to reduce this burden. Here, we review the immunologic underpinnings of Treg therapy and technical challenges to developing successful cell therapy. These issues include the selection of appropriate Treg subsets, ex vivo Treg expansion approaches, how many Tregs to administer and when, and how to care for patients after Treg administration.
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Affiliation(s)
| | - Joseph R Leventhal
- Comprehensive Transplant Center, Northwestern Memorial Hospital, Chicago, Illinois
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31
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Elliott DE, Weinstock JV. Nematodes and human therapeutic trials for inflammatory disease. Parasite Immunol 2017; 39. [PMID: 27977856 DOI: 10.1111/pim.12407] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 12/01/2016] [Indexed: 12/12/2022]
Abstract
Helminth infections likely provide a protective influence against some immune-mediated and metabolic diseases because helminth infection dramatically decreased in developed countries shortly before the explosive rise in the prevalence of these diseases. The capacity of helminths to activate immune-regulatory circuits in their hosts and to modulate the composition of intestinal flora appears to be the mechanisms of protective action. Animal models of disease show that various helminth species prevent and/or block inflammation in various organs in a diverse range of diseases. Clinical trials have demonstrated that medicinal exposure to Trichuris suis or small numbers of Necator americanus is safe with minor, if any, reported adverse effects. This includes exposure of inflamed intestine to T. suis, asthmathic lung to N. americanus and in patients with atopy. Efficacy has been suggested in some small studies, but is absent in others. Factors that may have led to inconclusive results in some trials are discussed. To date, there have been no registered clinical trials using helminths to treat metabolic syndrome or its component conditions. However, the excellent safety profile of T. suis or N. americanus suggests that such studies should be possible.
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Affiliation(s)
- D E Elliott
- Division of Gastroenterology, University of Iowa, Iowa City, IA, USA
| | - J V Weinstock
- Division of Gastroenterology, Tufts Medical Center, Boston, MA, USA
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Li CH, Zhang J, Baylink DJ, Wang X, Goparaju NB, Xu Y, Wasnik S, Cheng Y, Berumen EC, Qin X, Lau KHW, Tang X. Dendritic cells, engineered to overexpress 25-hydroxyvitamin D 1α-hydroxylase and pulsed with a myelin antigen, provide myelin-specific suppression of ongoing experimental allergic encephalomyelitis. FASEB J 2017; 31:2996-3006. [PMID: 28363955 PMCID: PMC5471518 DOI: 10.1096/fj.201601243r] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 03/13/2017] [Indexed: 12/18/2022]
Abstract
Multiple sclerosis (MS) is caused by immune-mediated damage of myelin sheath. Current therapies aim to block such immune responses. However, this blocking is not sufficiently specific and hence compromises immunity, leading to severe side effects. In addition, blocking medications usually provide transient effects and require frequent administration, which further increases the chance to compromise immunity. In this regard, myelin-specific therapy may provide the desired specificity and a long-lasting therapeutic effect by inducing myelin-specific regulatory T (Treg) cells. Tolerogenic dendritic cells (TolDCs) are one such therapy. However, ex vivo generated TolDCs may be converted into immunogenic DCs in a proinflammatory environment. In this study, we identified a potential novel myelin-specific therapy that works with immunogenic DCs, hence without the in vivo conversion concern. We showed that immunization with DCs, engineered to overexpress 25-hydroxyvitamin D 1α-hydroxylase for de novo synthesis of a focally high 1,25-dihydroxyvitamin D concentration in the peripheral lymphoid tissues, induced Treg cells. In addition, such engineered DCs, when pulsed with a myelin antigen, led to myelin-specific suppression of ongoing experimental allergic encephalomyelitis (an MS animal model), and the disease suppression depended on forkhead-box-protein-P3(foxp3)+ Treg cells. Our data support a novel concept that immunogenic DCs can be engineered for myelin-specific therapy for MS.—Li, C.-H., Zhang, J., Baylink, D. J., Wang, X., Goparaju, N. B., Xu, Y., Wasnik, S., Cheng, Y., Berumen, E. C., Qin, X., Lau, K.-H. W., Tang, X. Dendritic cells, engineered to overexpress 25-hydroxyvitamin D 1α-hydroxylase and pulsed with a myelin antigen, provide myelin-specific suppression of ongoing experimental allergic encephalomyelitis.
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Affiliation(s)
- Chih-Huang Li
- Division of Regenerative Medicine, Department of Medicine, Loma Linda University, Loma Linda, California, USA.,Department of Emergency Medicine, Chang-Gung Memorial Hospital, Linkou Medical Center, Taoyuan, Taiwan.,Graduate Institute of Clinical Medical Sciences, School of Medicine, Chang-Gung University, Taoyuan, Taiwan
| | - Jintao Zhang
- Division of Regenerative Medicine, Department of Medicine, Loma Linda University, Loma Linda, California, USA.,Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Henan, China
| | - David J Baylink
- Division of Regenerative Medicine, Department of Medicine, Loma Linda University, Loma Linda, California, USA
| | - Xiaohua Wang
- Division of Regenerative Medicine, Department of Medicine, Loma Linda University, Loma Linda, California, USA.,Division of Infectious Disease, Jinan Infectious Disease Hospital, Shandong University, Jinan, China
| | - Naga Bharani Goparaju
- Division of Regenerative Medicine, Department of Medicine, Loma Linda University, Loma Linda, California, USA
| | - Yi Xu
- Division of Regenerative Medicine, Department of Medicine, Loma Linda University, Loma Linda, California, USA
| | - Samiksha Wasnik
- Division of Regenerative Medicine, Department of Medicine, Loma Linda University, Loma Linda, California, USA
| | - Yanmei Cheng
- Division of Regenerative Medicine, Department of Medicine, Loma Linda University, Loma Linda, California, USA.,Yue Yang Hospital of Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Edmundo Carreon Berumen
- Division of Regenerative Medicine, Department of Medicine, Loma Linda University, Loma Linda, California, USA
| | - Xuezhong Qin
- Division of Regenerative Medicine, Department of Medicine, Loma Linda University, Loma Linda, California, USA.,Musculoskeletal Disease Center, Jerry L. Pettis Memorial Veterans Affairs Medical Center, Loma Linda, California, USA
| | - Kin-Hing William Lau
- Division of Regenerative Medicine, Department of Medicine, Loma Linda University, Loma Linda, California, USA.,Musculoskeletal Disease Center, Jerry L. Pettis Memorial Veterans Affairs Medical Center, Loma Linda, California, USA
| | - Xiaolei Tang
- Division of Regenerative Medicine, Department of Medicine, Loma Linda University, Loma Linda, California, USA;
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TGF-β1 along with other platelet contents augments Treg cells to suppress anti-FVIII immune responses in hemophilia A mice. Blood Adv 2016; 1:139-151. [PMID: 28164173 DOI: 10.1182/bloodadvances.2016001453] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Platelets are a rich source of many cytokines and chemokines including transforming growth factor β 1 (TGF-β1). TGF-β1 is required to convert conventional CD4+ T (Tconv) cells into induced regulatory T (iTreg) cells that express the transcription factor Foxp3. Whether platelet contents will affect Treg cell properties has not been explored. In this study, we show that unfractionated platelet lysates (pltLys) containing TGF-β1 efficiently induced Foxp3 expression in Tconv cells. The common Treg cell surface phenotype and in vitro suppressive activity of unfractionated pltLys-iTreg cells were similar to those of iTreg cells generated using purified TGF-β1 (purTGFβ-iTreg) cells. However, there were substantial differences in gene expression between pltLys-iTreg and purTGFβ-iTreg cells, especially in granzyme B, interferon γ, and interleukin-2 (a 30.99-, 29.18-, and 17.94-fold difference, respectively) as determined by gene microarray analysis. In line with these gene signatures, we found that pltLys-iTreg cells improved cell recovery after transfer and immune suppressive function compared with purTGFβ-iTreg cells in factor VIII (FVIII)-deficient (F8null, hemophilia A model) mice after recombinant human FVIII (rhF8) infusion. Acute antibody-mediated platelet destruction in F8null mice followed by rhF8 infusion increased the number of Treg cells and suppressed the antibody response to rhF8. Consistent with these data, ex vivo proliferation of F8-specific Treg cells from platelet-depleted animals increased when restimulated with rhF8. Together, our data suggest that pltLys-iTreg cells may have advantages in emerging clinical applications and that platelet contents impact the properties of iTreg cells induced by TGF-β1.
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Wang X, Zhang J, Baylink DJ, Li CH, Watts DM, Xu Y, Qin X, Walter MH, Tang X. Targeting Non-classical Myelin Epitopes to Treat Experimental Autoimmune Encephalomyelitis. Sci Rep 2016; 6:36064. [PMID: 27796368 PMCID: PMC5086895 DOI: 10.1038/srep36064] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 10/10/2016] [Indexed: 12/21/2022] Open
Abstract
Qa-1 epitopes, the peptides that bind to non-classical major histocompatibility complex Ib Qa-1 molecules and are recognized by Qa-1-restricted CD8+ regulatory T (Treg) cells, have been identified in pathogenic autoimmune cells that attack myelin sheath in experimental autoimmune encephalomyelitis (EAE, an animal model for multiple sclerosis [MS]). Additionally, immunization with such epitopes ameliorates the EAE. However, identification of such epitopes requires knowledge of the pathogenic autoimmune cells which are largely unknown in MS patients. Hence, we asked whether the CD8+ Treg cells could directly target the myelin sheath to ameliorate EAE. To address this question, we analyzed Qa-1 epitopes in myelin oligodendrocyte glycoprotein (MOG that is a protein in myelin sheath). Here, we report identification of a MOG-specific Qa-1 epitope. Immunization with this epitope suppressed ongoing EAE, which was abrogated by CD8+ T cell depletion. Additionally, the epitope immunization activated the epitope-specific CD8+ T cells which specifically accumulated in the CNS-draining cervical lymph nodes. Finally, CD8+ T cells primed by the epitope immunization transferred EAE suppression. Hence, this study reveals a novel regulatory mechanism mediated by the CD8+ Treg cells. We propose that immunization with myelin-specific HLA-E epitopes (human homologues of Qa-1 epitopes) is a promising therapy for MS.
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MESH Headings
- Amino Acid Sequence
- Animals
- CD8-Positive T-Lymphocytes/immunology
- CD8-Positive T-Lymphocytes/metabolism
- Cell Line
- Dendritic Cells/cytology
- Dendritic Cells/immunology
- Disease Models, Animal
- Encephalomyelitis, Autoimmune, Experimental/immunology
- Encephalomyelitis, Autoimmune, Experimental/pathology
- Encephalomyelitis, Autoimmune, Experimental/therapy
- Epitopes/chemistry
- Epitopes/immunology
- Epitopes/therapeutic use
- Female
- Histocompatibility Antigens Class I/chemistry
- Histocompatibility Antigens Class I/immunology
- Histocompatibility Antigens Class I/metabolism
- Humans
- Lymph Nodes/cytology
- Mice
- Mice, Inbred C57BL
- Myelin-Oligodendrocyte Glycoprotein/chemistry
- Myelin-Oligodendrocyte Glycoprotein/metabolism
- Protein Binding
- T-Lymphocytes, Regulatory/immunology
- T-Lymphocytes, Regulatory/metabolism
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Affiliation(s)
- Xiaohua Wang
- Department of Medicine, Division of Regenerative Medicine, Loma Linda University, Loma Linda, California, USA
- Division of Infectious Disease, Jinan Infectious Disease Hospital, Shandong University, 22029 Jing-Shi Road, Jinan, 250021, P.R. China
| | - Jintao Zhang
- Department of Medicine, Division of Regenerative Medicine, Loma Linda University, Loma Linda, California, USA
- Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Henan, China
| | - David J. Baylink
- Department of Medicine, Division of Regenerative Medicine, Loma Linda University, Loma Linda, California, USA
| | - Chih-Huang Li
- Department of Medicine, Division of Regenerative Medicine, Loma Linda University, Loma Linda, California, USA
- Department of Emergency Medicine, Chang-Gung Memorial Hospital, Linkou Medical Center, Taoyuan, Taiwan
- Graduate Institute of Clinical Medical Sciences, School of Medicine, Chang-Gung university, Taoyuan, Taiwan
| | - Douglas M. Watts
- Department of Biological Sciences, University of Texas at El Paso, El Paso, TX, USA
| | - Yi Xu
- Department of Medicine, Division of Regenerative Medicine, Loma Linda University, Loma Linda, California, USA
| | - Xuezhong Qin
- Department of Medicine, Division of Regenerative Medicine, Loma Linda University, Loma Linda, California, USA
- Musculoskeletal Disease Center, Jerry L. Pettis Memorial Veterans Affairs Medical Center, Loma Linda, California, USA
| | - Michael H. Walter
- Department of Medicine, Division of Regenerative Medicine, Loma Linda University, Loma Linda, California, USA
| | - Xiaolei Tang
- Department of Medicine, Division of Regenerative Medicine, Loma Linda University, Loma Linda, California, USA
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Singh Y, Zhou Y, Shi X, Zhang S, Umbach AT, Salker MS, Lang KS, Lang F. Alkaline Cytosolic pH and High Sodium Hydrogen Exchanger 1 (NHE1) Activity in Th9 Cells. J Biol Chem 2016; 291:23662-23671. [PMID: 27629415 DOI: 10.1074/jbc.m116.730259] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Indexed: 01/05/2023] Open
Abstract
CD4+ T helper 9 (Th9) cells are a newly discovered Th cell subset that produce the pleiotropic cytokine IL-9. Th9 cells can protect against tumors and provide resistance against helminth infections. Given their pivotal role in the adaptive immune system, understanding Th9 cell development and the regulation of IL-9 production could open novel immunotherapeutic opportunities. The Na+/H+ exchanger 1 (NHE1; gene name Slc9α1)) is critically important for regulating intracellular pH (pHi), cell volume, migration, and cell survival. The pHi influences cytokine secretion, activities of membrane-associated enzymes, ion transport, and other effector signaling molecules such as ATP and Ca2+ levels. However, whether NHE1 regulates Th9 cell development or IL-9 secretion has not yet been defined. The present study explored the role of NHE1 in Th9 cell development and function. Th cell subsets were characterized by flow cytometry and pHi was measured using 2',7'-bis-(2-carboxyethyl)-5-(and-6)-carboxyfluorescein-acetoxymethyl ester (BCECF-AM) dye. NHE1 functional activity was estimated from the rate of realkalinization following an ammonium pulse. Surprisingly, in Th9 cells pHi and NHE1 activity were significantly higher than in all other Th cell subsets (Th1/Th2/Th17 and induced regulatory T cells (iTregs)). NHE1 transcript levels and protein abundance were significantly higher in Th9 cells than in other Th cell subsets. Inhibition of NHE1 by siRNA-NHE1 or with cariporide in Th9 cells down-regulated IL-9 and ATP production. NHE1 activity, Th9 cell development, and IL-9 production were further blunted by pharmacological inhibition of protein kinase Akt1/Akt2. Our findings reveal that Akt1/Akt2 control of NHE1 could be an important physiological regulator of Th9 cell differentiation, IL-9 secretion, and ATP production.
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Affiliation(s)
- Yogesh Singh
- From the Departments of Cardiology, Cardiovascular Medicine and Physiology, Eberhard-Karls-Tübingen University, Tübingen, Gmelinstraße5, D-72076 Tübingen, Germany,
| | - Yuetao Zhou
- From the Departments of Cardiology, Cardiovascular Medicine and Physiology, Eberhard-Karls-Tübingen University, Tübingen, Gmelinstraße5, D-72076 Tübingen, Germany
| | - Xiaolong Shi
- From the Departments of Cardiology, Cardiovascular Medicine and Physiology, Eberhard-Karls-Tübingen University, Tübingen, Gmelinstraße5, D-72076 Tübingen, Germany
| | - Shaqiu Zhang
- From the Departments of Cardiology, Cardiovascular Medicine and Physiology, Eberhard-Karls-Tübingen University, Tübingen, Gmelinstraße5, D-72076 Tübingen, Germany.,the Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan 611130, China, and
| | - Anja T Umbach
- From the Departments of Cardiology, Cardiovascular Medicine and Physiology, Eberhard-Karls-Tübingen University, Tübingen, Gmelinstraße5, D-72076 Tübingen, Germany
| | - Madhuri S Salker
- From the Departments of Cardiology, Cardiovascular Medicine and Physiology, Eberhard-Karls-Tübingen University, Tübingen, Gmelinstraße5, D-72076 Tübingen, Germany
| | - Karl S Lang
- the Institute of Immunology, Medical Faculty, University of Duisburg-Essen, Hufelandstraße 55, 45147 Essen, Germany
| | - Florian Lang
- From the Departments of Cardiology, Cardiovascular Medicine and Physiology, Eberhard-Karls-Tübingen University, Tübingen, Gmelinstraße5, D-72076 Tübingen, Germany,
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Schmidt A, Zhang XM, Joshi RN, Iqbal S, Wahlund C, Gabrielsson S, Harris RA, Tegnér J. Human macrophages induce CD4(+)Foxp3(+) regulatory T cells via binding and re-release of TGF-β. Immunol Cell Biol 2016; 94:747-62. [PMID: 27075967 DOI: 10.1038/icb.2016.34] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2015] [Revised: 04/08/2016] [Accepted: 04/09/2016] [Indexed: 12/12/2022]
Abstract
While pro-inflammatory immune responses are a requirement to combat microbes, uncontrolled self-directed inflammatory immune responses are the hallmark of autoimmune diseases. Restoration of immunological tolerance involves both suppression of ongoing tissue-destructive immune responses and re-education of the host immune system. Both functionally immunosuppressive macrophages (M2) and regulatory T cells (Tregs) are implicated in these processes. Their mutual interaction is synergistic in this context and adoptive transfer of each cell type has been functioning as immunotherapy in experimental models, being particularly effective when using M2 macrophages generated with an optimized interleukin-4 (IL-4)/interleukin-10 (IL-10)/transforming growth factor-β (TGF-β) combination. As a prerequisite for eventual translation of M2 therapy into clinical settings we herein studied the induction, stability and mechanism of generation of human induced Tregs (iTregs) by M2 macrophages generated with IL-4/IL-10/TGF-β. The supernatants of monocyte-derived human M2 macrophages robustly induced FOXP3 and other Treg signature molecules such as CTLA-4 and IKZF4 in human naïve CD4 T cells. M2-induced iTregs displayed enhanced FOXP3 stability and low expression of pro-inflammatory cytokines interferon-γ and IL-17, as well as functional immunosuppressive activity compared with control T cells. The FOXP3-inducing activity was dependent on TGF-β, which was both expressed and captured with re-release by M2 macrophages into the soluble supernatant fraction, in which the TGF-β was not confined to extracellular vesicles such as exosomes. We propose that adoptive transfer of human M2 macrophages may be exploited in the future to induce Tregs in situ by delivering TGF-β, which could be developed as a therapeutic strategy to target autoimmune and other inflammatory diseases.
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Affiliation(s)
- Angelika Schmidt
- Unit of Computational Medicine, Center for Molecular Medicine, Department of Medicine Solna, Karolinska Institutet, Karolinska University Hospital, & Science for Life Laboratory, Stockholm, Sweden
| | - Xing-Mei Zhang
- Applied Immunology & Immunotherapy, Center for Molecular Medicine, Karolinska University Hospital at Solna, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Rubin N Joshi
- Unit of Computational Medicine, Center for Molecular Medicine, Department of Medicine Solna, Karolinska Institutet, Karolinska University Hospital, & Science for Life Laboratory, Stockholm, Sweden
| | - Shasina Iqbal
- Unit of Computational Medicine, Center for Molecular Medicine, Department of Medicine Solna, Karolinska Institutet, Karolinska University Hospital, & Science for Life Laboratory, Stockholm, Sweden
| | - Casper Wahlund
- Translational Immunology Unit, Department of Medicine Solna, Karolinska Institutet & Karolinska University Hospital, Stockholm, Sweden
| | - Susanne Gabrielsson
- Translational Immunology Unit, Department of Medicine Solna, Karolinska Institutet & Karolinska University Hospital, Stockholm, Sweden
| | - Robert A Harris
- Applied Immunology & Immunotherapy, Center for Molecular Medicine, Karolinska University Hospital at Solna, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Jesper Tegnér
- Unit of Computational Medicine, Center for Molecular Medicine, Department of Medicine Solna, Karolinska Institutet, Karolinska University Hospital, & Science for Life Laboratory, Stockholm, Sweden
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Wolf KJ, Emerson RO, Pingel J, Buller RM, DiPaolo RJ. Conventional and Regulatory CD4+ T Cells That Share Identical TCRs Are Derived from Common Clones. PLoS One 2016; 11:e0153705. [PMID: 27100298 PMCID: PMC4839724 DOI: 10.1371/journal.pone.0153705] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 04/03/2016] [Indexed: 11/18/2022] Open
Abstract
Results from studies comparing the diversity and specificity of the TCR repertoires expressed by conventional (Tconv) and regulatory (Treg) CD4+ T cell have varied depending on the experimental system employed. We developed a new model in which T cells express a single fixed TCRα chain, randomly rearranged endogenous TCRβ chains, and a Foxp3-GFP reporter. We purified CD4+Foxp3- and CD4+Foxp3+ cells, then performed biased controlled multiplex PCR and high throughput sequencing of endogenous TCRβ chains. We identified >7,000 different TCRβ sequences in the periphery of 5 individual mice. On average, ~12% of TCR sequences were expressed by both conventional and regulatory populations within individual mice. The CD4+ T cells that expressed shared TCR sequences were present at higher frequencies compared to T cells expressing non-shared TCRs. Furthermore, nearly all (>90%) of the TCR sequences that were shared within mice were identical at the DNA sequence level, indicating that conventional and regulatory T cells that express shared TCRs are derived from common clones. Analysis of TCR repertoire overlap in the thymus reveals that a large proportion of Tconv and Treg sharing observed in the periphery is due to clonal expansion in the thymus. Together these data show that there are a limited number of TCR sequences shared between Tconv and Tregs. Also, Tconv and Tregs sharing identical TCRs are found at relatively high frequencies and are derived from common progenitors, of which a large portion are generated in the thymus.
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Affiliation(s)
- Kyle J. Wolf
- Department of Molecular Microbiology and Immunology, Saint Louis University, School of Medicine, Saint Louis, Missouri, United States of America
| | - Ryan O. Emerson
- Adaptive Biotechnologies Corporation, Seattle, Washington, United States of America
| | - Jeanette Pingel
- Department of Molecular Microbiology and Immunology, Saint Louis University, School of Medicine, Saint Louis, Missouri, United States of America
| | - R. Mark Buller
- Department of Molecular Microbiology and Immunology, Saint Louis University, School of Medicine, Saint Louis, Missouri, United States of America
| | - Richard J. DiPaolo
- Department of Molecular Microbiology and Immunology, Saint Louis University, School of Medicine, Saint Louis, Missouri, United States of America
- * E-mail:
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Expression patterns of sirtuin 1-AMPK-autophagy pathway in chronic colitis and inflammation-associated colon neoplasia in IL-10-deficient mice. Int Immunopharmacol 2016; 35:248-256. [PMID: 27085036 DOI: 10.1016/j.intimp.2016.03.046] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 03/19/2016] [Accepted: 03/30/2016] [Indexed: 12/13/2022]
Abstract
BACKGROUND Interleukin-10-deficient (IL-10 (-/-)) mice spontaneously develop chronic colitis and adenocarcinoma through the dysplasia sequence. Autophagy malfunction is associated to inflammatory bowel disease (IBD) and colorectal cancer (CRC) pathogenesis. Autophagy is regulated by silent information regulator-1 (SIRT1), a NAD+-dependent histone deacetylase. Our aim was to investigate the expression changes of SIRT1-AMPK-autophagy pathway in the progression from chronic colitis to CRC. METHODS We studied C57BL/6-IL-10-deficient mice between 6 and 18weeks of age. Macroscopic and histological analysis, and characterization of inflammatory and tumor biomarkers were performed. RESULTS IL-10-deficient mice developed colitis from the age of 6weeks onward. The severity of inflammation and dysplasia, and the proliferative activity increased gradually with age. IL-10 (-/-) mice were characterized by improved levels of TNF-α and decreased expression of SIRT1. Moreover, our findings show an increase in p-AMPK expression and an activation of the autophagy in IL-10 (-/-) mice from all stages, evidenced by the accumulation of LC3-II protein, the increase in Beclin 1 expression and the reduction in Bcl-2 levels. CONCLUSIONS SIRT1-AMPK-autophagy pathway may be involved in the maintenance of chronic inflammation and dysplasia development in the IL-10-deficient mice model. Modulation of this pathway could be a novel strategy for IBD and CRC treatment.
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Haribhai D, Ziegelbauer J, Jia S, Upchurch K, Yan K, Schmitt EG, Salzman NH, Simpson P, Hessner MJ, Chatila TA, Williams CB. Alternatively Activated Macrophages Boost Induced Regulatory T and Th17 Cell Responses during Immunotherapy for Colitis. THE JOURNAL OF IMMUNOLOGY 2016; 196:3305-17. [PMID: 26927797 DOI: 10.4049/jimmunol.1501956] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 02/05/2016] [Indexed: 12/12/2022]
Abstract
Induced regulatory T (iTreg) and Th17 cells promote mucosal homeostasis. We used a T cell transfer model of colitis to compare the capacity of iTreg and Th17 cells to develop in situ following the transfer of naive CD4(+)CD45RB(hi)T cells intoRag1(-/-)C57BL/6 or BALB/c mice, the prototypical Th1/M1- and Th2/M2-prone strains. We found that the frequency and number of Foxp3(+)iTreg cells and Th17 cells were significantly reduced in C57BL/6 mice compared with the BALB/c strain. C57BL/6 mice with colitis were also resistant to natural Treg cell immunotherapy. Pretreatment of C57BL/6Rag1(-/-)mice with IL-4 plus IL-13, or with M2a but not M1 macrophages, dramatically increased the generation of iTreg and Th17 cells. Importantly, M2a transfers, either as a pretreatment or in mice with established colitis, allowed successful immunotherapy with natural Treg cells. M2a macrophages also reduced the generation of pathogenic iTreg cells that lost Foxp3 expression, suggesting that they stabilize the expression of Foxp3. Thus, polarized M2a macrophages drive a directionally concordant expansion of the iTreg-Th17 cell axis and can be exploited as a therapeutic adjuvant in cell-transfer immunotherapy to re-establish mucosal tolerance.
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Affiliation(s)
- Dipica Haribhai
- Section of Rheumatology, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI 53226
| | - Jennifer Ziegelbauer
- Section of Rheumatology, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI 53226
| | - Shuang Jia
- Section of Endocrinology, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI 53226
| | - Kyle Upchurch
- Section of Rheumatology, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI 53226
| | - Ke Yan
- Section of Quantitative Health Sciences, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI 53226
| | - Erica G Schmitt
- Section of Rheumatology, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI 53226
| | - Nita H Salzman
- Section of Gastroenterology, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI 53226; and
| | - Pippa Simpson
- Section of Quantitative Health Sciences, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI 53226
| | - Martin J Hessner
- Section of Endocrinology, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI 53226
| | - Talal A Chatila
- Division of Immunology, Children's Hospital Boston, Boston, MA 02115
| | - Calvin B Williams
- Section of Rheumatology, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI 53226;
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Schmidt A, Eriksson M, Shang MM, Weyd H, Tegnér J. Comparative Analysis of Protocols to Induce Human CD4+Foxp3+ Regulatory T Cells by Combinations of IL-2, TGF-beta, Retinoic Acid, Rapamycin and Butyrate. PLoS One 2016; 11:e0148474. [PMID: 26886923 PMCID: PMC4757416 DOI: 10.1371/journal.pone.0148474] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Accepted: 01/19/2016] [Indexed: 01/02/2023] Open
Abstract
Regulatory T cells (Tregs) suppress other immune cells and are critical mediators of peripheral tolerance. Therapeutic manipulation of Tregs is subject to numerous clinical investigations including trials for adoptive Treg transfer. Since the number of naturally occurring Tregs (nTregs) is minute, it is highly desirable to develop a complementary approach of inducing Tregs (iTregs) from naïve T cells. Mouse studies exemplify the importance of peripherally induced Tregs as well as the applicability of iTreg transfer in different disease models. Yet, procedures to generate iTregs are currently controversial, particularly for human cells. Here we therefore comprehensively compare different established and define novel protocols of human iTreg generation using TGF-β in combination with other compounds. We found that human iTregs expressed several Treg signature molecules, such as Foxp3, CTLA-4 and EOS, while exhibiting low expression of the cytokines Interferon-γ, IL-10 and IL-17. Importantly, we identified a novel combination of TGF-β, retinoic acid and rapamycin as a robust protocol to induce human iTregs with superior suppressive activity in vitro compared to currently established induction protocols. However, iTregs generated by these protocols did not stably retain Foxp3 expression and did not suppress in vivo in a humanized graft-versus-host-disease mouse model, highlighting the need for further research to attain stable, suppressive iTregs. These results advance our understanding of the conditions enabling human iTreg generation and may have important implications for the development of adoptive transfer strategies targeting autoimmune and inflammatory diseases.
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Affiliation(s)
- Angelika Schmidt
- Unit of Computational Medicine, Center for Molecular Medicine, Department of Medicine, Karolinska Institutet & Karolinska University Hospital, Stockholm, Sweden
- * E-mail:
| | - Matilda Eriksson
- Unit of Computational Medicine, Center for Molecular Medicine, Department of Medicine, Karolinska Institutet & Karolinska University Hospital, Stockholm, Sweden
| | - Ming-Mei Shang
- Unit of Computational Medicine, Center for Molecular Medicine, Department of Medicine, Karolinska Institutet & Karolinska University Hospital, Stockholm, Sweden
| | - Heiko Weyd
- Division of Immunogenetics, Tumor Immunology Program, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Jesper Tegnér
- Unit of Computational Medicine, Center for Molecular Medicine, Department of Medicine, Karolinska Institutet & Karolinska University Hospital, Stockholm, Sweden
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Haribhai D, Chatila TA, Williams CB. Immunotherapy with iTreg and nTreg Cells in a Murine Model of Inflammatory Bowel Disease. Methods Mol Biol 2016; 1422:197-211. [PMID: 27246035 DOI: 10.1007/978-1-4939-3603-8_19] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Regulatory T (Treg) cells that express the transcription factor Foxp3 are essential for maintaining tolerance at mucosal interfaces, where they act by controlling inflammation and promoting epithelial cell homeostasis. There are two major regulatory T-cell subsets, "natural" CD4(+) Treg (nTreg) cells that develop in the thymus and "induced" Treg (iTreg) cells that develop from conventional CD4(+) T (Tconv) cells in the periphery. Dysregulated Treg cell responses are associated with autoimmune diseases, including inflammatory bowel disease (IBD) and arthritis. Adoptive transfer of Treg cells can modulate innate and adaptive immune responses and cure disease in animal models, which has generated considerable interest in using Treg cells to treat human autoimmune disease, prevent rejection of transplanted organs, and to control graft-versus-host disease following hematopoietic stem cell transplantation. Herein, we describe our modifications of a treatment model of T-cell transfer colitis designed to allow mechanistic investigation of the two major Treg cell subsets and to compare their specific roles in mucosal tolerance.
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Affiliation(s)
- Dipica Haribhai
- Section of Rheumatology, Department of Pediatrics, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI, 53226, USA
| | - Talal A Chatila
- Division of Immunology, Children's Hospital Boston, Boston, MA, 02115, USA
| | - Calvin B Williams
- Section of Rheumatology, Department of Pediatrics, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI, 53226, USA.
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Turner AJ, Aggarwal P, Miller HE, Waukau J, Routes JM, Broeckel U, Robinson RT. The introduction of RNA-DNA differences underlies interindividual variation in the human IL12RB1 mRNA repertoire. Proc Natl Acad Sci U S A 2015; 112:15414-9. [PMID: 26621740 PMCID: PMC4687591 DOI: 10.1073/pnas.1515978112] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Human interleukin 12 and interleukin 23 (IL12/23) influence susceptibility or resistance to multiple diseases. However, the reasons underlying individual differences in IL12/23 sensitivity remain poorly understood. Here we report that in human peripheral blood mononuclear cells (PBMCs) and inflamed lungs, the majority of interleukin-12 receptor β1 (IL12RB1) mRNAs contain a number of RNA-DNA differences (RDDs) that concentrate in sequences essential to IL12Rβ1's binding of IL12p40, the protein subunit common to both IL-12 and IL-23. IL12RB1 RDDs comprise multiple RDD types and are detectable by next-generation sequencing and classic Sanger sequencing. As a consequence of these RDDs, the resulting IL12Rβ1 proteins have an altered amino acid sequence that could not be predicted on the basis of genomic DNA sequencing alone. Importantly, the introduction of RDDs into IL12RB1 mRNAs negatively regulates IL12Rβ1's binding of IL12p40 and is sensitive to activation. Collectively, these results suggest that the introduction of RDDs into an individual's IL12RB1 mRNA repertoire is a novel determinant of IL12/23 sensitivity.
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Affiliation(s)
- Amy J Turner
- Department of Pediatrics, Section of Genomic Pediatrics and Children's Research Institute, The Medical College of Wisconsin, Milwaukee, WI 53226; Human and Molecular Genetics Center, The Medical College of Wisconsin, Milwaukee, WI 53226
| | - Praful Aggarwal
- Department of Pediatrics, Section of Genomic Pediatrics and Children's Research Institute, The Medical College of Wisconsin, Milwaukee, WI 53226; Human and Molecular Genetics Center, The Medical College of Wisconsin, Milwaukee, WI 53226
| | - Halli E Miller
- Department of Microbiology and Molecular Genetics, The Medical College of Wisconsin, Milwaukee, WI 53226
| | - Jill Waukau
- Department of Pediatrics, Section of Asthma, Allergy and Clinical Immunology, The Medical College of Wisconsin, Milwaukee, WI 53226
| | - John M Routes
- Department of Pediatrics, Section of Asthma, Allergy and Clinical Immunology, The Medical College of Wisconsin, Milwaukee, WI 53226
| | - Ulrich Broeckel
- Department of Pediatrics, Section of Genomic Pediatrics and Children's Research Institute, The Medical College of Wisconsin, Milwaukee, WI 53226; Human and Molecular Genetics Center, The Medical College of Wisconsin, Milwaukee, WI 53226;
| | - Richard T Robinson
- Department of Microbiology and Molecular Genetics, The Medical College of Wisconsin, Milwaukee, WI 53226;
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T regulatory cells and B cells cooperate to form a regulatory loop that maintains gut homeostasis and suppresses dextran sulfate sodium-induced colitis. Mucosal Immunol 2015; 8:1297-312. [PMID: 25807185 PMCID: PMC4583327 DOI: 10.1038/mi.2015.20] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Accepted: 02/17/2015] [Indexed: 02/07/2023]
Abstract
Regulatory T cells (Tregs) and B cells present in gut-associated lymphoid tissues (GALT) are both implicated in the resolution of colitis. However, how the functions of these cells are coordinated remains elusive. We used the dextran sulfate sodium (DSS)-induced colitis model combined with gene-modified mice to monitor the progression of colitis, and simultaneously examine the number of Tregs and B cells, and the production of IgA antibodies. We found that DSS-treated mice exhibited more severe colitis in the absence of B cells, and that the adoptive transfer of B cells attenuated the disease. Moreover, the transfer of IL-10(-/-) B cells also attenuated colitis, suggesting that B cells inhibited colitis through an interleukin-10 (IL-10)-independent pathway. Furthermore, antibody depletion of Tregs resulted in exacerbated colitis. Intriguingly, the number of GALT Tregs in B cell-deficient mice was significantly decreased during colitis and the adoptive transfer of B cells into these mice restored the Treg numbers, indicating that B cells contribute to Treg homeostasis. We also found that B cells induced the proliferation of Tregs that in turn promoted B-cell differentiation into IgA-producing plasma cells. These results demonstrate that B cells and Tregs interact and cooperate to prevent excessive immune responses that can lead to colitis.
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Ben Ya'acov A, Lichtenstein Y, Zolotarov L, Ilan Y. The gut microbiome as a target for regulatory T cell-based immunotherapy: induction of regulatory lymphocytes by oral administration of anti-LPS enriched colostrum alleviates immune mediated colitis. BMC Gastroenterol 2015; 15:154. [PMID: 26518263 PMCID: PMC4628342 DOI: 10.1186/s12876-015-0388-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Accepted: 10/25/2015] [Indexed: 02/07/2023] Open
Abstract
Background Gut-derived bacterial endotoxin is an important cofactor in the pathogenesis of IBD. Regulatory T cells (Tregs) are essential for maintenance of peripheral tolerance and can prevent and alleviate IBD. To determine the immune modulatory effect of anti-LPS enriched hyperimmune colostrum, its ability to induce Tregs and alleviate immune mediated colitis. Methods Immune-mediated colitis was induced in mice by intra-colonic instillation of Trinitrobenzene Sulfonate (TNBS). Four groups of mice were orally administered with two dosages of IgG-enriched colostrum fractions. The fractions were harvested from cows immunized against LPS derived from intestinal Escherichia coli bacteria (Imm124E). Control mice received non-immunized colostrum or vehicle (PBS). Treatment was administered one day following sensitization and four additional days following the administration of TNBS. The following parameters in the mice were tracked: body weight, bowel histology, serum cytokine levels and regulatory T cells. Results Oral administration of Imm124E hyperimmune colostrum ameliorated immune-mediated colitis. Significant amelioration of weight reduction was noted in treated mice. Oral administration of Imm124E improved bowel histology. Both the extent of the disease, inflammation score, and colitis damage and regeneration scores decreased in Imm-124E treated animals. These effects were associated with an increase in serum IL10 anti inflammatory cytokine levels, and an increase in CD4 + CD25+ and CD4 + Foxp3+ Tregs. Conclusions Oral administration of Imm124E promoted Tregs and alleviated bowel inflammation in immune mediated colitis. The present data suggests that the microbiome may serve as a target for Tregs-based immunotherapy. Electronic supplementary material The online version of this article (doi:10.1186/s12876-015-0388-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ami Ben Ya'acov
- Gastroenterology and liver Unit, Department of Medicine, Hadassah Hebrew University Medical Center, Jerusalem, Israel.
| | - Yoav Lichtenstein
- Gastroenterology and liver Unit, Department of Medicine, Hadassah Hebrew University Medical Center, Jerusalem, Israel.
| | - Lidya Zolotarov
- Gastroenterology and liver Unit, Department of Medicine, Hadassah Hebrew University Medical Center, Jerusalem, Israel.
| | - Yaron Ilan
- Gastroenterology and liver Unit, Department of Medicine, Hadassah Hebrew University Medical Center, Jerusalem, Israel.
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Charbonnier LM, Wang S, Georgiev P, Sefik E, Chatila TA. Control of peripheral tolerance by regulatory T cell-intrinsic Notch signaling. Nat Immunol 2015; 16:1162-73. [PMID: 26437242 PMCID: PMC4618075 DOI: 10.1038/ni.3288] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Accepted: 09/02/2015] [Indexed: 12/14/2022]
Abstract
Receptors of the Notch family direct the differentiation of helper T cell subsets, but their influence on regulatory T cell (T(reg) cell) responses is obscure. We found here that lineage-specific deletion of components of the Notch pathway enhanced T(reg) cell-mediated suppression of type 1 helper T cell (T(H)1 cell) responses and protected against their T(H)1 skewing and apoptosis. In contrast, expression in T(reg) cells of a gain-of-function transgene encoding the Notch1 intracellular domain resulted in lymphoproliferation, exacerbated T(H)1 responses and autoimmunity. Cell-intrinsic canonical Notch signaling impaired T(reg) cell fitness and promoted the acquisition by T(reg) cells of a T(H)1 cell-like phenotype, whereas non-canonical Notch signaling dependent on the adaptor Rictor activated the kinase AKT-transcription factor Foxo1 axis and impaired the epigenetic stability of Foxp3. Our findings establish a critical role for Notch signaling in controlling peripheral T(reg) cell function.
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Affiliation(s)
- Louis-Marie Charbonnier
- Division of Immunology, Boston Children's Hospital, Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
| | - Sen Wang
- Division of Immunology, Boston Children's Hospital, Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
| | - Peter Georgiev
- Division of Immunology, Boston Children's Hospital, Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
| | - Esen Sefik
- Division of Immunology, Department of Microbiology and Immunobiology, Harvard Medical School, Boston, Massachusetts, USA
| | - Talal A Chatila
- Division of Immunology, Boston Children's Hospital, Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
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O’Connor RA, Anderton SM. Inflammation-associated genes: risks and benefits to Foxp3+ regulatory T-cell function. Immunology 2015; 146:194-205. [PMID: 26190495 PMCID: PMC4582961 DOI: 10.1111/imm.12507] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 06/30/2015] [Accepted: 07/02/2015] [Indexed: 01/10/2023] Open
Abstract
Foxp3(+) regulatory T (Treg) cells prevent the development of autoimmunity and immunopathology, as well as maintaining homeostasis and tolerance to commensal microorganisms. The suppressive activity of Treg cells is their defining characteristic, generating great interest in their therapeutic potential. However, suppressive and effector functions are not entirely exclusive. Considerable evidence points to the ability of supposedly anti-inflammatory Foxp3-expressing Treg cells to also express transcription factors that have been characterized as cardinal drivers of T effector cell function. We will consider the mounting evidence that Treg cells can function in non-suppressive capacities and review the impetus for this functional change, its relevance to developing immune and autoimmune responses and its significance to the development of Treg-based therapies.
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Affiliation(s)
- Richard A O’Connor
- MRC Centre for Inflammation Research, Centre for Multiple Sclerosis Research and Centre for Immunity Infection and Evolution, University of EdinburghEdinburgh, UK
| | - Stephen M Anderton
- MRC Centre for Inflammation Research, Centre for Multiple Sclerosis Research and Centre for Immunity Infection and Evolution, University of EdinburghEdinburgh, UK
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Mirlekar B, Patil S, Bopanna R, Chattopadhyay S. MAR binding protein SMAR1 favors IL-10 mediated regulatory T cell function in acute colitis. Biochem Biophys Res Commun 2015; 464:647-53. [PMID: 26168735 DOI: 10.1016/j.bbrc.2015.07.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 07/06/2015] [Indexed: 10/23/2022]
Abstract
Treg cells are not only crucial for controlling immune responses to autoantigens but also prevent those directed towards commensal pathogens. Control of effector immune responses by Treg cells depend on their capacity to accumulate at inflammatory site and accordingly accommodate to inflammatory environment. Till date, the factors associated with maintaining these aspects of Treg phenotype is not understood properly. Here we have shown that a known nuclear matrix binding protein SMAR1 is selectively expressed more in colonic Treg cells and is required for their ability to accumulate at inflammatory site and to sustain high levels of Foxp3 and IL-10 expression during acute colitis. Elimination of anti-inflammatory subsets revealed a protective role for IL-10 producing Treg cells in SMAR1(-/-) mice. Moreover, a combined action of Foxp3 and SMAR1 restricts effector cytokine production and enhance the production of IL-10 by colonic Treg cells that controls acute colitis. This data highlights a critical role of SMAR1 in maintaining Treg physiology during inflammatory disorders.
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Affiliation(s)
- Bhalchandra Mirlekar
- Chromatin and Disease Biology Laboratory, National Centre for Cell Science, Ganeshkhind, Pune 411007, India
| | - Sachin Patil
- Chromatin and Disease Biology Laboratory, National Centre for Cell Science, Ganeshkhind, Pune 411007, India
| | - Ramanamurthy Bopanna
- Experimental Animal Facility, National Centre for Cell Science, Ganeshkhind, Pune 411007, India
| | - Samit Chattopadhyay
- Chromatin and Disease Biology Laboratory, National Centre for Cell Science, Ganeshkhind, Pune 411007, India.
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Verhagen J, Wegner A, Wraith DC. Extra-thymically induced T regulatory cell subsets: the optimal target for antigen-specific immunotherapy. Immunology 2015; 145:171-81. [PMID: 25716063 DOI: 10.1111/imm.12458] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 02/20/2015] [Accepted: 02/21/2015] [Indexed: 12/13/2022] Open
Abstract
Antigen-specific immunotherapy aims to selectively restore tolerance to innocuous antigens in cases of autoimmune or allergic disease, without the need for general immune suppression. Although the principle of antigen-specific immunotherapy was discovered more than a century ago, its clinical application to date is limited, particularly in the control of autoimmunity. This has resulted mainly from a lack of in-depth understanding of the underlying mechanism. More recently, the differentiation of extra-thymically induced T regulatory (Treg) cell subsets has been shown to be instrumental in peripheral tolerance induction. Two main types of inducible Treg cells, interleukin-10-secreting or Foxp3(+) , have now been described, each with distinct characteristics and methods of therapeutic induction. It is crucial, therefore, to identify the suitability of either subset in the control of specific immune disorders. This review explores their natural function, the known mechanisms of therapeutic differentiation of either subset as well as their in vivo functionality and discusses new developments that may aid their use in antigen-specific immunotherapy, with a focus on autoimmune disease.
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Affiliation(s)
- Johan Verhagen
- School of Cellular and Molecular Medicine, University of Bristol, Bristol, UK
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49
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Wang L, Jiang X, Liu X, Qian T, Chu Y. Local immune compartments are related to the severity of dextran sodium sulphate induced colitis. Biosci Trends 2015; 8:242-7. [PMID: 25382439 DOI: 10.5582/bst.2014.01088] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Dextran sodium sulphate (DSS) induced colitis is commonly used to simulate human ulcerative colitis (UC). However, the mucosal immune responses related to the severity of disease have not been comprehensively documented. We used different concentration of DSS, induced various severities of colitis, and simultaneously examined the frequency of immune cells, antibodies and cytokine production. We found that T regulatory cells (Tregs), B cells, and IgA secretion increased on the recovery phase of mild colitis, accompanied by CD11b(+) cells, interleukin (IL)-6 and tumor necrosis factor (TNF)-α accumulated mildly. While during severe and irreversible colitis, the CD11b(+) cells, IL-6, and TNF-α infiltrated severely with Tregs, B cells, and IgA increased inconspicuously. These results demonstrate that Tregs, B cells, and IgA may play a significant role in maintaining the homeostasis of gut, by suppressing CD11b(+) cells and the pro-inflammatory cytokines.
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Affiliation(s)
- Luman Wang
- Department of Immunology and Key Laboratory of Medical Molecular Virology of MOE/MOH, School of Basic Medical
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50
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Geem D, Harusato A, Flannigan K, Denning TL. Harnessing regulatory T cells for the treatment of inflammatory bowel disease. Inflamm Bowel Dis 2015; 21:1409-18. [PMID: 25793328 PMCID: PMC4437827 DOI: 10.1097/mib.0000000000000343] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Accepted: 01/09/2015] [Indexed: 12/12/2022]
Abstract
Regulatory CD4 T (Treg) cells are comprised of a heterogeneous population of cells that play a vital role in suppressing inflammation and maintaining immune tolerance. The immunoregulatory function of Treg cells is especially important in the intestine where the mucosa is exposed to a diverse array of foreign antigens-including those derived from food and commensal bacteria. Treg cells are enriched in the intestinal lamina propria and provide a crucial function in promoting tolerance to enteric antigens while modulating tissue inflammation. Correspondingly, Treg cell dysfunction is associated with a breakdown in intestinal tolerance and the induction of aberrant immune responses that may contribute to the pathogenesis of inflammatory bowel disease. This review will provide a brief overview of Treg cell biology with a focus on Foxp3 Treg and type 1 regulatory (Tr1) cells and summarize the evidence for defective Treg cells in experimental and human inflammatory bowel disease. The potential application of Treg cells as a treatment for inflammatory bowel disease will also be discussed in the context of Treg infusion therapy and the in vivo induction/expansion of intestinal Treg cells.
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Affiliation(s)
- Duke Geem
- Center for Inflammation, Immunity, and Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia; and
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, Georgia
| | - Akihito Harusato
- Center for Inflammation, Immunity, and Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia; and
| | - Kyle Flannigan
- Center for Inflammation, Immunity, and Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia; and
| | - Timothy L. Denning
- Center for Inflammation, Immunity, and Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia; and
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