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Jyotsna, Sarkar B, Yadav M, Deka A, Markandey M, Sanyal P, Nagarajan P, Gaikward N, Ahuja V, Mohanty D, Basak S, Gokhale RS. A hepatocyte-specific transcriptional program driven by Rela and Stat3 exacerbates experimental colitis in mice by modulating bile synthesis. eLife 2024; 12:RP93273. [PMID: 39137024 PMCID: PMC11321761 DOI: 10.7554/elife.93273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2024] Open
Abstract
Hepatic factors secreted by the liver promote homeostasis and are pivotal for maintaining the liver-gut axis. Bile acid metabolism is one such example wherein, bile acid synthesis occurs in the liver and its biotransformation happens in the intestine. Dysfunctional interactions between the liver and the intestine stimulate varied pathological outcomes through its bidirectional portal communication. Indeed, aberrant bile acid metabolism has been reported in inflammatory bowel disease (IBD). However, the molecular mechanisms underlying these crosstalks that perpetuate intestinal permeability and inflammation remain obscure. Here, we identify a novel hepatic gene program regulated by Rela and Stat3 that accentuates the inflammation in an acute experimental colitis model. Hepatocyte-specific ablation of Rela and Stat3 reduces the levels of primary bile acids in both the liver and the gut and shows a restricted colitogenic phenotype. On supplementation of chenodeoxycholic acid (CDCA), knock-out mice exhibit enhanced colitis-induced alterations. This study provides persuasive evidence for the development of multi-organ strategies for treating IBD and identifies a hepatocyte-specific Rela-Stat3 network as a promising therapeutic target.
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Affiliation(s)
- Jyotsna
- Immunometabolism Laboratory, National Institute of ImmunologyNew DelhiIndia
| | - Binayak Sarkar
- Immunometabolism Laboratory, National Institute of ImmunologyNew DelhiIndia
| | - Mohit Yadav
- Immunometabolism Laboratory, National Institute of ImmunologyNew DelhiIndia
| | - Alvina Deka
- System Immunology Laboratory, National Institute of ImmunologyNew DelhiIndia
| | - Manasvini Markandey
- Department of GastroEnterology, All India Institute of Medical SciencesNew DelhiIndia
| | | | - Perumal Nagarajan
- Immunometabolism Laboratory, National Institute of ImmunologyNew DelhiIndia
| | | | - Vineet Ahuja
- Department of GastroEnterology, All India Institute of Medical SciencesNew DelhiIndia
| | - Debasisa Mohanty
- Immunometabolism Laboratory, National Institute of ImmunologyNew DelhiIndia
| | - Soumen Basak
- System Immunology Laboratory, National Institute of ImmunologyNew DelhiIndia
| | - Rajesh S Gokhale
- Immunometabolism Laboratory, National Institute of ImmunologyNew DelhiIndia
- Department of Biology, Indian Institute of Science Education and ResearchPashanIndia
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Abdelaziz I, Bounaama A, Djerdjouri B, Amir-Tidadini ZC. Low-dose dimethylfumarate attenuates colitis-associated cancer in mice through M2 macrophage polarization and blocking oxidative stress. Toxicol Appl Pharmacol 2024; 489:117018. [PMID: 38945373 DOI: 10.1016/j.taap.2024.117018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 06/13/2024] [Accepted: 06/26/2024] [Indexed: 07/02/2024]
Abstract
Colitis-associated cancer (CAC) is an aggressive subtype of colorectal cancer that can develop in ulcerative colitis patients and is driven by chronic inflammation and oxidative stress. Current chemotherapy for CAC, based on 5-fluorouracil and oxalipltin, is not fully effective and displays severe side effects, prompting the search for alternative therapies. Dimethylfumarate (DMF), an activator of the nuclear factor erythroid 2-related factor 2 (NRF2), is a potent antioxidant and immunomodelatrory drug used in the treatment of multiple sclerosis and showed a strong anti-inflammatory effect on experimental colitis. Here, we investigated the chemotherapeutic effect of DMF on an experimental model of CAC. Male NMRI mice were given two subcutaneous injections of 1,2 Dimethylhydrazine (DMH), followed by three cycles of dextran sulfate sodium (DSS). Low-dose (DMF30) and high-dose of DMF (DMF100) or oxaliplatin (OXA) were administered from the 8th to 12th week of the experiment, and then the colon tissues were analysed histologically and biochemically. DMH/DSS induced dysplastic aberrant crypt foci (ACF), oxidative stress, and severe colonic inflammation, with a predominance of pro-inflammatory M1 macrophages. As OXA, DMF30 reduced ACF multiplicity and crypt dysplasia, but further restored redox status, and reduced colitis severity by shifting macrophages towards the anti-inflammatory M2 phenotype. Surprisingly, DMF100 exacerbated ACF multiplicity, oxidative stress, and colon inflammation, likely through NRF2 and p53 overexpression in colonic inflammatory cells. DMF had a dual effect on CAC. At low dose, DMF is chemotherapeutic and acts as an antioxidant and immunomodulator, whereas at high dose, DMF is pro-oxidant and exacerbates colitis-associated cancer.
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Affiliation(s)
- Ismahane Abdelaziz
- Tamayouz_Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene (USTHB), Algiers, Algeria
| | - Abdelkader Bounaama
- Tamayouz_Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene (USTHB), Algiers, Algeria.
| | - Bahia Djerdjouri
- Tamayouz_Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene (USTHB), Algiers, Algeria
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3
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Zeng J, Lu QQ, Du XL, Yuan L, Yang XJ. Toll-like receptor 3 signaling drives enteric glial cells against dextran sulfate sodium-induced colitis in mice. J Mol Histol 2024; 55:201-210. [PMID: 38376631 DOI: 10.1007/s10735-024-10184-7] [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: 11/04/2023] [Accepted: 02/11/2024] [Indexed: 02/21/2024]
Abstract
The activation of toll-like receptor 3 (TLR3) has been reported to attenuate astrocytes injury in central nervous system, but its effect on enteric glial cells (EGCs) remains unknown. Here, we confirmed that the residence of EGCs was regulated by TLR3 agonist (polyinosinic-polycytidylic acid, PIC) or TLR3/dsRNA complex inhibitor in dextran sulfate sodium (DSS)-induced mice. In vitro, TLR3 signaling prevented apoptosis in EGCs and drove the secretion of EGCs-derived glial cell line-derived neurotrophic factor, 15-hydroxyeicosatetraenoic acid and S-nitrosoglutathione. PIC preconditioning enhanced the protective effects of EGCs against the dysfunction of intestinal epithelial barrier and the development of colitis in DSS-induced mice. Interestingly, PIC stimulation also promoted the effects of EGCs on converting macrophages to an M2-like phenotype and regulating the levels of inflammatory cytokines, including IL-1β, TNF-α and IL-10, in DSS-induced mice. These findings imply that TLR3 signaling in EGCs may provide a potential target for the prevention and treatment of colitis.
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Affiliation(s)
- Jian Zeng
- Department of Gastroenterology, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, China.
| | - Qiong-Qiong Lu
- Department of Gastroenterology, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, China
| | - Xiao-Long Du
- Department of Gastroenterology, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, China
| | - Ling Yuan
- Department of Gastroenterology, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, China
| | - Xiao-Jun Yang
- Department of Gastroenterology, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, China
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4
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Zheng X, Jiang Q, Han M, Ye F, Wang M, Qiu Y, Wang J, Gao M, Hou F, Wang H. FBXO38 regulates macrophage polarization to control the development of cancer and colitis. Cell Mol Immunol 2023; 20:1367-1378. [PMID: 37821621 PMCID: PMC10616184 DOI: 10.1038/s41423-023-01081-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 08/27/2023] [Indexed: 10/13/2023] Open
Abstract
Macrophages are highly plastic cells that differentially regulate multiple pathological conditions, including cancer and autoimmune diseases. In response to various stimuli, macrophages activate different intrinsic signaling pathways and polarize into distinct macrophage subsets. We aimed to identify key new effectors that could control macrophage polarization and impact the development of cancer or colitis. Following treatment with the supernatants of tumor cells, macrophages showed an upregulation in Fbxo38 expression. Subsequently, we further identified that FBXO38 promotes macrophage immunosuppressive function by upregulating the expression of M2-like genes via MAPK and IRF4 signaling without affecting M1-like macrophage polarization. Deletion of Fbxo38 in macrophages was found to block tumor development and protect against DSS-induced colitis. Considering the distinct regulation of tumor development by FBXO38 in T cells and macrophages, we suggest that a comprehensive understanding of FBXO38 function in different cell types is critical for its further translational usage.
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Affiliation(s)
- Xin Zheng
- School of Life Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Qi Jiang
- School of Life Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
| | - Mingshun Han
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Fenfen Ye
- School of Life Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
| | - Mingchang Wang
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Ying Qiu
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Jialu Wang
- School of Life Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
| | - Minxia Gao
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Fajian Hou
- School of Life Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Hongyan Wang
- School of Life Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China.
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China.
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Duan H, Wang L, Huangfu M, Li H. The impact of microbiota-derived short-chain fatty acids on macrophage activities in disease: Mechanisms and therapeutic potentials. Biomed Pharmacother 2023; 165:115276. [PMID: 37542852 DOI: 10.1016/j.biopha.2023.115276] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 07/28/2023] [Accepted: 07/31/2023] [Indexed: 08/07/2023] Open
Abstract
Short-chain fatty acids (SCFAs) derived from the fermentation of carbohydrates by gut microbiota play a crucial role in regulating host physiology. Among them, acetate, propionate, and butyrate are key players in various biological processes. Recent research has revealed their significant functions in immune and inflammatory responses. For instance, butyrate reduces the development of interferon-gamma (IFN-γ) generating cells while promoting the development of regulatory T (Treg) cells. Propionate inhibits the initiation of a Th2 immune response by dendritic cells (DCs). Notably, SCFAs have an inhibitory impact on the polarization of M2 macrophages, emphasizing their immunomodulatory properties and potential for therapeutics. In animal models of asthma, both butyrate and propionate suppress the M2 polarization pathway, thus reducing allergic airway inflammation. Moreover, dysbiosis of gut microbiota leading to altered SCFA production has been implicated in prostate cancer progression. SCFAs trigger autophagy in cancer cells and promote M2 polarization in macrophages, accelerating tumor advancement. Manipulating microbiota- producing SCFAs holds promise for cancer treatment. Additionally, SCFAs enhance the expression of hypoxia-inducible factor 1 (HIF-1) by blocking histone deacetylase, resulting in increased production of antibacterial effectors and improved macrophage-mediated elimination of microorganisms. This highlights the antimicrobial potential of SCFAs and their role in host defense mechanisms. This comprehensive review provides an in-depth analysis of the latest research on the functional aspects and underlying mechanisms of SCFAs in relation to macrophage activities in a wide range of diseases, including infectious diseases and cancers. By elucidating the intricate interplay between SCFAs and macrophage functions, this review aims to contribute to the understanding of their therapeutic potential and pave the way for future interventions targeting SCFAs in disease management.
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Affiliation(s)
- Hongliang Duan
- Department of Thyroid Surgery, the Second Hospital of Jilin University, Changchun 130000, China
| | - LiJuan Wang
- Department of Endocrinology, the Second Hospital of Jilin University, Changchun 130000, China.
| | - Mingmei Huangfu
- Department of Thyroid Surgery, the Second Hospital of Jilin University, Changchun 130000, China
| | - Hanyang Li
- Department of Endocrinology, the Second Hospital of Jilin University, Changchun 130000, China
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Ge X, Xue G, Ding Y, Li R, Hu K, Xu T, Sun M, Liao W, Zhao B, Wen C, Du J. The Loss of YTHDC1 in Gut Macrophages Exacerbates Inflammatory Bowel Disease. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2205620. [PMID: 36922750 PMCID: PMC10190588 DOI: 10.1002/advs.202205620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 02/16/2023] [Indexed: 05/18/2023]
Abstract
The nuclear N6 -methyladenosine (m6 A) reader YT521-B homology-domain-containing protein 1 (YTHDC1) is required to maintain embryonic stem cell identity. However, little is known about its biological functions in intestinal-resident macrophages and inflammatory bowel disease (IBD). Herein, it is demonstrated that macrophage-specific depletion or insufficiency of YTHDC1 accelerates IBD development in animal models. On the molecular basis, YTHDC1 reduction in IBD-derived macrophages is attributed to Zinc finger protein 36 (ZFP36)-induced mRNA degradation. Importantly, transcriptome profiling and mechanistic assays unveil that YTHDC1 in macrophages regulates Ras homolog family member H (RHOH) to suppress inflammatory responses and fine-tunes NME nucleoside diphosphate kinase 1 (NME1) to enhance the integrity of colonic epithelial barrier, respectively. Collectively, this study identifies YTHDC1 as an important factor for the resolution of inflammatory responses and restoration of colonic epithelial barrier in the setting of IBD.
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Affiliation(s)
- Xuejun Ge
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New MaterialsShanxi Medical University School and Hospital of StomatologyTaiyuanShanxi030001China
| | - Gang Xue
- Department of GastroenterologySecond Hospital of Shanxi Medical UniversityTaiyuanShanxi030001China
| | - Yan Ding
- Department of DermatologyHainan Provincial Hospital of Skin DiseaseHaikouHainan570000China
- Department of DermatologyHainan Medical University Affiliated Dermatology Hospital of Hainan Medical CollegeHaikouHainan570000China
| | - Ran Li
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New MaterialsShanxi Medical University School and Hospital of StomatologyTaiyuanShanxi030001China
| | - Kaining Hu
- Department of Human GeneticsThe University of ChicagoChicagoIL60637USA
| | - Tengjiao Xu
- Department of DermatologyHainan Medical University Affiliated Dermatology Hospital of Hainan Medical CollegeHaikouHainan570000China
| | - Ming Sun
- College of Life SciencesMudanjiang Medical UniversityMudanjiangHeilongjiang157011China
| | - Wang Liao
- Department of CardiologyHainan General Hospital and Hainan Affiliated Hospital of Hainan Medical UniversityHaikou570311China
| | - Bin Zhao
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New MaterialsShanxi Medical University School and Hospital of StomatologyTaiyuanShanxi030001China
| | - Chuangyu Wen
- Central LaboratoryAffiliated Dongguan HospitalSouthern Medical UniversityDongguanGuangdong523108China
| | - Jie Du
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New MaterialsShanxi Medical University School and Hospital of StomatologyTaiyuanShanxi030001China
- Institute of Biomedical ResearchShanxi Medical UniversityTaiyuanShanxi030001China
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Cayratia japonica Prevents Ulcerative Colitis by Promoting M2 Macrophage Polarization through Blocking the TLR4/MAPK/NF- κB Pathway. Mediators Inflamm 2022; 2022:1108569. [PMID: 36619207 PMCID: PMC9822765 DOI: 10.1155/2022/1108569] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 11/11/2022] [Accepted: 11/24/2022] [Indexed: 12/31/2022] Open
Abstract
Background and Aims Several components of Cayratia japonica (CJ) such as rutin and quercetin have shown anti-inflammatory effect, yet its function in ulcerative colitis (UC) remains to be clarified. This study focuses on the modulatory effect of CJ on UC as well as molecular mechanism by which CJ regulates macrophage polarization in UC. Methods The targets related to CJ components and UC were, respectively, obtained through in silico analysis, and their intersection targets were selected for pathway enrichment analysis. RAW264.7 cells were stimulated with lipopolysaccharide (LPS) to induce M1 macrophages. Expression of the macrophage polarization M1 marker CD11b and M2 marker CD206 was measured to determine the phenotype of macrophages. The mouse model was treated with dextran sodium sulfate (DSS) to induce UC to observe the effects of CJ on UC in vivo. Results The in silico analysis suggested the crucial significance of TLR4 and its downstream MAPK/NF-κB pathways in the modulatory effect of CJ on UC. Furthermore, experimental data revealed that CJ could promote M2 macrophage polarization but alleviate immune inflammation and reduce colon damage in DSS-evoked UC model. Additionally, CJ can inhibit the expression of TLR4/MAPK/NF-κB signaling pathway to enhance the M2-like polarization. Conclusion Hence, CJ may exert anti-inflammatory effects and an inhibitory role in UC by inhibiting the TLR4/MAPK/NF-κB pathway and subsequent M1-like macrophage polarization.
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Liu ZX, Chen WJ, Wang Y, Chen BQ, Liu YC, Cheng TC, Luo LL, Chen L, Ju LL, Liu Y, Li M, Feng N, Shao JG, Bian ZL. Interleukin-34 deficiency aggravates development of colitis and colitis-associated cancer in mice. World J Gastroenterol 2022; 28:6752-6768. [PMID: 36620338 PMCID: PMC9813936 DOI: 10.3748/wjg.v28.i47.6752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 11/02/2022] [Accepted: 11/23/2022] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Although expression of interleukin (IL)-34 is upregulated in active ulcerative colitis (UC), the molecular function and underlying mechanism are largely unclear.
AIM To investigate the function of IL-34 in acute colitis, in a wound healing model and in colitis-associated cancer in IL-34-deficient mice.
METHODS Colitis was induced by administration of dextran sodium sulfate (DSS), and carcinogenesis was induced by azoxymethane (AOM). Whether the impact of IL-34 on colitis was dependent on macrophages was validated by depletion of macrophages in a murine model. The association between IL-34 expression and epithelial proliferation was studied in patients with active UC.
RESULTS IL-34 deficiency aggravated murine colitis in acute colitis and in wound healing phase. The effect of IL-34 on experimental colitis was not dependent on macrophage differentiation and polarization. IL-34-deficient mice developed more tumors than wild-type mice following administration of AOM and DSS. No significant difference was shown in degree of cellular differentiation in tumors between wild-type and IL-34-deficient mice. IL-34 was dramatically increased in the active UC patients as previously reported. More importantly, expression of IL-34 was positively correlated with epithelial cell proliferation in patients with UC.
CONCLUSION IL-34 deficiency exacerbates colonic inflammation and accelerates colitis-associated carcinogenesis in mice. It might be served as a potential therapeutic target in UC.
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Affiliation(s)
- Zhao-Xiu Liu
- Department of Gastroenterology and Hepatology, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu Province, China
| | - Wei-Jie Chen
- Medical School, Nantong University, Nantong 226001, Jiangsu Province, China
| | - Yang Wang
- Medical School, Nantong University, Nantong 226001, Jiangsu Province, China
| | - Bing-Qian Chen
- Medical School, Nantong University, Nantong 226001, Jiangsu Province, China
| | - Yi-Cun Liu
- Medical School, Nantong University, Nantong 226001, Jiangsu Province, China
| | - Tiao-Chun Cheng
- Medical School, Nantong University, Nantong 226001, Jiangsu Province, China
| | - Lei-Lei Luo
- Department of Gastroenterology and Hepatology, Nantong Third People’s Hospital, Affiliated Nantong Hospital 3 of Nantong University, Nantong 226006, Jiangsu Province, China
| | - Lin Chen
- Nantong Institute of Liver Diseases, Nantong Third People’s Hospital, Affiliated Nantong Hospital 3 of Nantong University, Nantong 226006, Jiangsu Province, China
| | - Lin-Ling Ju
- Nantong Institute of Liver Diseases, Nantong Third People’s Hospital, Affiliated Nantong Hospital 3 of Nantong University, Nantong 226006, Jiangsu Province, China
| | - Yuan Liu
- Department of Gastroenterology and Hepatology, The Sixth People’s Hospital Affiliated to Shanghai Jiaotong University, Shanghai 200233, China
| | - Ming Li
- Department of Traditional Chinese Medicine, Nantong Third People’s Hospital, Affiliated Nantong Hospital 3 of Nantong University, Nantong 226006, Jiangsu Province, China
| | - Nan Feng
- Division of Emergency, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200120, China
| | - Jian-Guo Shao
- Department of Gastroenterology and Hepatology, Nantong Third People’s Hospital, Affiliated Nantong Hospital 3 of Nantong University, Nantong 226006, Jiangsu Province, China
| | - Zhao-Lian Bian
- Department of Gastroenterology and Hepatology, Nantong Third People’s Hospital, Affiliated Nantong Hospital 3 of Nantong University, Nantong 226006, Jiangsu Province, China
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Herrada AA, Olate-Briones A, Lazo-Amador R, Liu C, Hernández-Rojas B, Riadi G, Escobedo N. Lymph Leakage Promotes Immunosuppression by Enhancing Anti-Inflammatory Macrophage Polarization. Front Immunol 2022; 13:841641. [PMID: 35663931 PMCID: PMC9160822 DOI: 10.3389/fimmu.2022.841641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 04/25/2022] [Indexed: 11/16/2022] Open
Abstract
Lymphatic vasculature is a network of capillaries and vessels capable of draining extracellular fluid back to blood circulation and to facilitate immune cell migration. Although the role of the lymphatic vasculature as coordinator of fluid homeostasis has been extensively studied, the consequences of abnormal lymphatic vasculature function and impaired lymph drainage have been mostly unexplored. Here, by using the Prox1+/- mice with defective lymphatic vasculature and lymphatic leakage, we provide evidence showing that lymph leakage induces an immunosuppressive environment by promoting anti-inflammatory M2 macrophage polarization in different inflammatory conditions. In fact, by using a mouse model of tail lymphedema where lymphatic vessels are thermal ablated leading to lymph accumulation, an increasing number of anti-inflammatory M2 macrophages are found in the lymphedematous tissue. Moreover, RNA-seq analysis from different human tumors shows that reduced lymphatic signature, a hallmark of lymphatic dysfunction, is associated with increased M2 and reduced M1 macrophage signatures, impacting the survival of the patients. In summary, we show that lymphatic vascular leakage promotes an immunosuppressive environment by enhancing anti-inflammatory macrophage differentiation, with relevance in clinical conditions such as inflammatory bowel diseases or cancer.
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Affiliation(s)
- Andrés A. Herrada
- Lymphatic Vasculature and Inflammation Research Laboratory, Instituto de Ciencias Biomédicas, Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Talca, Chile
| | - Alexandra Olate-Briones
- Lymphatic Vasculature and Inflammation Research Laboratory, Instituto de Ciencias Biomédicas, Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Talca, Chile
| | - Rodrigo Lazo-Amador
- Lymphatic Vasculature and Inflammation Research Laboratory, Instituto de Ciencias Biomédicas, Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Talca, Chile
| | - Chaohong Liu
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Bairon Hernández-Rojas
- Ph.D Program in Sciences Mention in Modeling of Chemical and Biological Systems, Faculty of Engineering, University of Talca, Talca, Chile
| | - Gonzalo Riadi
- Agencia Nacional de Investigación y Desarrollo (ANID) – Millennium Science Initiative Program Millennium Nucleus of Ion Channels-Associated Diseases (MiNICAD), Center for Bioinformatics, Simulation and Modeling, CBSM, Department of Bioinformatics, Faculty of Engineering, University of Talca, Talca, Chile
| | - Noelia Escobedo
- Lymphatic Vasculature and Inflammation Research Laboratory, Instituto de Ciencias Biomédicas, Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Talca, Chile
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Liao L, Dang W, Lin T, Yu J, Liu T, Li W, Xiao S, Feng L, Huang J, Fu R, Li J, Liu L, Wang M, Tao H, Jiang H, Chen K, Diao X, Zhou B, Shen X, Luo C. A potent PGK1 antagonist reveals PGK1 regulates the production of IL-1β and IL-6. Acta Pharm Sin B 2022; 12:4180-4192. [PMID: 36386479 PMCID: PMC9643279 DOI: 10.1016/j.apsb.2022.05.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 04/28/2022] [Accepted: 05/03/2022] [Indexed: 12/02/2022] Open
Abstract
Glycolytic metabolism enzymes have been implicated in the immunometabolism field through changes in metabolic status. PGK1 is a catalytic enzyme in the glycolytic pathway. Here, we set up a high-throughput screen platform to identify PGK1 inhibitors. DC-PGKI is an ATP-competitive inhibitor of PGK1 with an affinity of Kd = 99.08 nmol/L. DC-PGKI stabilizes PGK1 in vitro and in vivo, and suppresses both glycolytic activity and the kinase function of PGK1. In addition, DC-PGKI unveils that PGK1 regulates production of IL-1β and IL-6 in LPS-stimulated macrophages. Mechanistically, inhibition of PGK1 with DC-PGKI results in NRF2 (nuclear factor-erythroid factor 2-related factor 2, NFE2L2) accumulation, then NRF2 translocates to the nucleus and binds to the proximity region of Il-1β and Il-6 genes, and inhibits LPS-induced expression of these genes. DC-PGKI ameliorates colitis in the dextran sulfate sodium (DSS)-induced colitis mouse model. These data support PGK1 as a regulator of macrophages and suggest potential utility of PGK1 inhibitors in the treatment of inflammatory bowel disease.
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Glial cell line-derived neurotrophic factor ameliorates dextran sulfate sodium-induced colitis in mice via a macrophage-mediated pathway. Int Immunopharmacol 2021; 100:108143. [PMID: 34543979 DOI: 10.1016/j.intimp.2021.108143] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 08/19/2021] [Accepted: 09/05/2021] [Indexed: 02/08/2023]
Abstract
Glial cell line-derived neurotrophic factor (GDNF) has been reported to protect mice from intestinal inflammation, but its anti-inflammatory mechanisms are poorly understood. Here we found that there was a downregulation in intestinal expression of GDNF accompanied by an increase of M1 macrophages in dextran sulfate sodium (DSS)-induced colitis in mice. GDNF treatment could facilitate the macrophages polarization towards the M2-like phenotype in DSS-treated mice and LPS-stimulated RAW264.7 cells, and reduce pro-inflammatory cytokines and increase anti-inflammatory cytokines. Mechanistically, the activation of PI3K/AKT pathway might contribute to the regulation of GDNF on macrophage phenotypes and inflammatory response. Moreover, the administration of GDNF significantly ameliorated colitis in DSS-treated mice, but this benefit of GDNF was diminished by macrophage depletion. Therefore, we propose a new mechanism whereby GDNF suppresses DSS-induced colitis in mice via a macrophage-mediated pathway.
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12
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Tang J, Liu J, Yan Q, Gu Z, August A, Huang W, Jiang Z. Konjac Glucomannan Oligosaccharides Prevent Intestinal Inflammation Through SIGNR1-Mediated Regulation of Alternatively Activated Macrophages. Mol Nutr Food Res 2021; 65:e2001010. [PMID: 34390195 DOI: 10.1002/mnfr.202001010] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 08/05/2021] [Indexed: 12/23/2022]
Abstract
SCOPE Konjac glucomannan oligosaccharides (KMOS) are prebiotics and may improve intestinal immunity through modulation of macrophage function. However, the underlying molecular mechanisms were unclear. METHODS AND RESULTS Using a mouse model of dextran sulfated sodium (DSS)-induced acute colitis, the study demonstrates here that KMOS (400 mg-1 kg-1 d-1 ) can ameliorate intestinal inflammation in a macrophage dependent manner. Oral exposure to KMOS prevents DSS-induced intestinal pathology, improves epithelial integrity, and decreases accumulation of colonic inflammatory leukocytes and cytokines. The therapeutic effects of KMOS are dependent on the function of macrophages, as depletion of macrophages abolished the effects. In colonic lamina propria of DSS-treated mice, as well as in vitro culture of bone marrow derived macrophages (BMDMs), KMOS skews reprogramming of classically activated macrophages (CAM/M1) into alternatively activated macrophages (AAM/M2). The study further determines that the activation of SIGNR1/phospho-c-Raf (S338)/phospho-p65 (S276)/acetyl-p65 (K310) pathway is responsible for KMOS-induced AAM/M2 polarization. Blockage of SIGNR1 abolishes KMOS-induced AAM/M2 polarization of activated macrophages, expression of phospho-p65 (S276) in colonic macrophages, and alleviation of DSS-induced colitis in mice, suggesting that SIGNR1 is critical for macrophage responses to KMOS. CONCLUSIONS This study reveals a SIGNR1-mediated macrophage-dependent pathway that supports regulatory function of KMOS in host immunity and intestinal homeostasis.
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Affiliation(s)
- Jiqing Tang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China
| | - Jun Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China
| | - Qiaojuan Yan
- Key Laboratory of Food Bioengineering (China National Light Industry), College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China
| | - Zhenglong Gu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China.,Division of Nutritional Sciences, Cornell University, Ithaca, NY, 14853, USA
| | - Avery August
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY, 13843, USA
| | - Weishan Huang
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY, 13843, USA.,Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Zhengqiang Jiang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China
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13
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Wang J, Lu S, Yang F, Guo Y, Chen Z, Yu N, Yao L, Huang J, Fan W, Xu Z, Gong Y. The role of macrophage polarization and associated mechanisms in regulating the anti-inflammatory action of acupuncture: a literature review and perspectives. Chin Med 2021; 16:56. [PMID: 34281592 PMCID: PMC8287695 DOI: 10.1186/s13020-021-00466-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Accepted: 07/09/2021] [Indexed: 12/23/2022] Open
Abstract
Acupuncture is used in the treatment of a variety of inflammatory conditions and diseases. However, the mechanisms of its anti-inflammatory action are complex and have not been systematically investigated. Macrophages are key components of the innate immune system, thus, balancing the M1/M2 macrophage ratio and modulating cytokine levels in the inflammatory environment may be desirable therapeutic goals. Evidence has shown that acupuncture has anti-inflammatory actions that affect multiple body systems, including the immune, locomotory, endocrine, nervous, digestive, and respiratory systems, by downregulating pro-inflammatory M1 and upregulating anti-inflammatory M2 macrophages, as well as by modulating associated cytokine secretion. Macrophage polarization is controlled by the interlocking pathways of extrinsic factors, the local tissue microenvironment, and the neural-endocrine-immune systems. It has been suggested that polarization of T lymphocytes and cytokine secretions resulting in modulation of the autonomic nervous system and the hypothalamic–pituitary–adrenal axis, may be upstream mechanisms of acupuncture-induced macrophage polarization. We further propose that macrophage polarization could be the principal pathway involved in acupuncture immune regulation and provide the scientific basis for the clinical application of acupuncture in inflammatory conditions.
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Affiliation(s)
- Jiaqi Wang
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, No.10 Poyang Lake Road, Tuanbo New Town, Jinghai District, Tianjin, 301617, People's Republic of China
| | - Shanshan Lu
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, No.10 Poyang Lake Road, Tuanbo New Town, Jinghai District, Tianjin, 301617, People's Republic of China
| | - Fuming Yang
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, No.10 Poyang Lake Road, Tuanbo New Town, Jinghai District, Tianjin, 301617, People's Republic of China
| | - Yi Guo
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, No.10 Poyang Lake Road, Tuanbo New Town, Jinghai District, Tianjin, 301617, People's Republic of China.,School of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, People's Republic of China.,National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, 300381, People's Republic of China
| | - Zelin Chen
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, No.10 Poyang Lake Road, Tuanbo New Town, Jinghai District, Tianjin, 301617, People's Republic of China.,School of Acupuncture & Moxibustion and Tuina, Tianjin University of Traditional Chinese Medicine, No.10 Poyang Lake Road, Tuanbo New Town, Jinghai District, Tianjin, 301617, People's Republic of China.,National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, 300381, People's Republic of China
| | - Nannan Yu
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, No.10 Poyang Lake Road, Tuanbo New Town, Jinghai District, Tianjin, 301617, People's Republic of China
| | - Lin Yao
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, No.10 Poyang Lake Road, Tuanbo New Town, Jinghai District, Tianjin, 301617, People's Republic of China
| | - Jin Huang
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, No.10 Poyang Lake Road, Tuanbo New Town, Jinghai District, Tianjin, 301617, People's Republic of China
| | - Wen Fan
- Suzuka University of Medical Science, Suzuka, 5100293, Japan
| | - Zhifang Xu
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, No.10 Poyang Lake Road, Tuanbo New Town, Jinghai District, Tianjin, 301617, People's Republic of China. .,School of Acupuncture & Moxibustion and Tuina, Tianjin University of Traditional Chinese Medicine, No.10 Poyang Lake Road, Tuanbo New Town, Jinghai District, Tianjin, 301617, People's Republic of China. .,National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, 300381, People's Republic of China.
| | - Yinan Gong
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, No.10 Poyang Lake Road, Tuanbo New Town, Jinghai District, Tianjin, 301617, People's Republic of China. .,School of Acupuncture & Moxibustion and Tuina, Tianjin University of Traditional Chinese Medicine, No.10 Poyang Lake Road, Tuanbo New Town, Jinghai District, Tianjin, 301617, People's Republic of China.
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14
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Cao XY, Ni JH, Wang X, Feng GZ, Li HD, Bao WL, Wang YR, You KY, Weng HB, Shen XY. Total glucosides of Paeony restores intestinal barrier function through inhibiting Lyn/Snail signaling pathway in colitis mice. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2021; 87:153590. [PMID: 34033998 DOI: 10.1016/j.phymed.2021.153590] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 04/12/2021] [Accepted: 04/29/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Inflammatory bowel disease (IBD) is an autoimmune disease. The pathogenesis of IBD is complicated and intestinal mucosal barrier damage is considered as the trigger factor for the initiation and recurrence of IBD. Total Glucosides of Paeony (TGP) has shown good inhibitory effects on immune-inflammation in clinic studies. However, its effect and mechanism on IBD are largely unknown. PURPOSE The purpose of this study is to evaluate the effect and mechanism of TGP on IBD. STUDY DESIGN DSS-induced colitis mouse model was used. TGP was given by gavage. Caco-2 cells were stimulated by outer membrane vesicles (OMV) to establish an in vitro model. METHODS C57BL/6 mice were divided into normal control group, model group, mesalazine group, paeoniflorin (PA) group, high-dose group of TGP, and low-dose group of TGP. The model was induced with 2.5% DSS for 7 days, and TGP was intragastrically administered for 10 days. The therapeutic effect of TGP was evaluated by symptoms, histochemical analysis, RT-qPCR and ELISA. The mechanism was explored by intestinal permeability, Western blot and immunofluorescence in vivo and in vitro. RESULTS Our results showed that TGP could significantly improve the symptoms and pathological changes, with reduced levels of TNF-α, IL-17A, IL-23 and IFN-γ in the colon tissues and serum under a dose-dependent manner. TGP also reduced the intestinal permeability and restored the protein expression of tight junction and adherens junction proteins of intestinal epithelial cells in vivo and in vitro. Furthermore, TGP could inhibit the expression of p-Lyn and Snail and prevent Snail nuclear localization, thereby maintaining tight and adherens junctions. CONCLUSION TGP effectively improves the symptoms of DSS-induced colitis in mice, protects the intestinal epithelial barrier by inhibiting the Lyn/Snail signaling pathway, and maybe a promise therapeutic agent for IBD treatment.
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Affiliation(s)
- Xin-Yue Cao
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China
| | - Jia-Hui Ni
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China
| | - Xu Wang
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China
| | - Gui-Ze Feng
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China
| | - Hai-Dong Li
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China
| | - Wei-Lian Bao
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China
| | - Yi-Rui Wang
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China
| | - Ke-Yuan You
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China
| | - Hong-Bo Weng
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China.
| | - Xiao-Yan Shen
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China.
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15
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Wang Z, Hao C, Zhuang Q, Zhan B, Sun X, Huang J, Cheng Y, Zhu X. Excretory/Secretory Products From Trichinella spiralis Adult Worms Attenuated DSS-Induced Colitis in Mice by Driving PD-1-Mediated M2 Macrophage Polarization. Front Immunol 2020; 11:563784. [PMID: 33117347 PMCID: PMC7575908 DOI: 10.3389/fimmu.2020.563784] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 08/12/2020] [Indexed: 12/14/2022] Open
Abstract
Helminth-modulated macrophages contribute to attenuating inflammation in inflammatory bowel diseases. The programmed death 1 (PD-1) plays an important role in macrophage polarization and is essential in the maintenance of immune system homeostasis. Here, we investigate the role of PD-1-mediated polarization of M2 macrophages and the protective effects of excretory/secretory products from Trichinella spiralis adult worms (AES) on DSS-induced colitis in mice. Colitis in mice was induced by oral administration of dextran sodium sulfate (DSS) daily. Mice with DSS-induced colitis were treated with T. spiralis AES intraperitoneally, and pathological manifestations were evaluated. Macrophages in mice were depleted with liposomal clodronate. Markers for M1-type (iNOS, TNF-α) and M2-type (CD206, Arg-1) macrophages were detected by qRT-PCR and flow cytometry. Macrophage expression of PD-1 was quantified by flow cytometry; RAW 264.7 cells and peritoneal macrophages were used for in vitro tests, and PD-1 gene knockout mice were used for in vivo investigation of the role of PD-1 in AES-induced M2 macrophage polarization. Macrophage depletion was found to reduce DSS-induced colitis in mice. Treatment with T. spiralis AES significantly increased macrophage expression of CD206 and Arg-1 and simultaneously attenuated colitis severity. We found T. spiralis AES to enhance M2 macrophage polarization; these findings were confirmed studying in vitro cultures of RAW264.7 cells and peritoneal macrophages from mice. Further experimentation revealed that AES upregulated PD-1 expression, primarily on M2 macrophages expressing CD206. The AES-induced M2 polarization was found to be decreased in PD-1 deficient macrophages, and the therapeutic effects of AES on colitis was reduced in PD-1 knockout mice. In conclusion, the protective effects of T. spiralis AES on DSS-induced colitis were found to associate with PD-1 upregulation and M2 macrophage polarization. Thus, PD-1-mediated M2 macrophage polarization is a key mechanism of helminth-induced modulation of the host immune system.
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Affiliation(s)
- Zixia Wang
- Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Capital Medical University, Beijing, China.,Department of Clinical Laboratory Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Chunyue Hao
- Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Qinghui Zhuang
- Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Bin Zhan
- Department of Pediatrics, National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, United States
| | - Ximeng Sun
- Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Jingjing Huang
- Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Yuli Cheng
- Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Xinping Zhu
- Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
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16
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Ruder B, Becker C. At the Forefront of the Mucosal Barrier: The Role of Macrophages in the Intestine. Cells 2020; 9:E2162. [PMID: 32987848 PMCID: PMC7601053 DOI: 10.3390/cells9102162] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 09/17/2020] [Accepted: 09/22/2020] [Indexed: 12/14/2022] Open
Abstract
Macrophages are part of the innate immunity and are key players for the maintenance of intestinal homeostasis. They belong to the group of mononuclear phagocytes, which exert bactericidal functions and help to clear apoptotic cells. Moreover, they play essential roles for the maintenance of epithelial integrity and tissue remodeling during wound healing processes and might be implicated in intestinal tumor development. Macrophages are antigen-presenting cells and secrete immune-modulatory factors, like chemokines and cytokines, which are necessary to activate other intestinal immune cells and therefore to shape immune responses in the gut. However, overwhelming activation or increased secretion of pro-inflammatory cytokines might also contribute to the pathogenesis of inflammatory bowel disease. Presently, intestinal macrophages are in the center of intense studies, which might help to develop new therapeutic strategies to counteract the development or treat already existing inflammatory diseases in the gut. In this review, we focus on the origin of intestinal macrophages and, based on current knowledge, discuss their role in the gut during homeostasis and inflammation, as well as during intestinal wound healing and tumor development.
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Affiliation(s)
| | - Christoph Becker
- Department of Medicine 1, Friedrich-Alexander-University Erlangen-Nürnberg, Hartmannstr. 14, 91052 Erlangen, Germany;
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17
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Moreira Lopes TC, Mosser DM, Gonçalves R. Macrophage polarization in intestinal inflammation and gut homeostasis. Inflamm Res 2020; 69:1163-1172. [PMID: 32886145 DOI: 10.1007/s00011-020-01398-y] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 07/21/2020] [Accepted: 08/30/2020] [Indexed: 12/19/2022] Open
Abstract
Gut homeostasis is a process that requires a prudent balance of host responses to the beneficial enteric microbial community and the pathogenic stimuli that can arise. The lack of this balance in the intestine can result in inflammatory bowel diseases, where the immune system dysfunctions leading to exacerbated inflammatory responses. In this process, macrophages are considered to play a pivotal role. In this review, we describe the important role of macrophages in maintaining intestinal homeostasis and we discuss how altered macrophage function may lead to inflammatory bowel diseases. The plasticity of macrophages during the gut inflammatory response shows the broad role of these cells in orchestrating not only the onset of inflammation but also its termination as well as healing and repair. Indeed, the state of macrophage polarization can be the key factor in defining the resolution or the progression of inflammation and disease. Here, we discuss the different populations of macrophages and their implication in development, propagation, control and resolution of inflammatory bowel diseases.
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Affiliation(s)
- Tamara Cristina Moreira Lopes
- Laboratório de Biologia de Macrófagos e Monócitos, Departamento de Patologia Geral, Instituto de Ciências Biológicas-Universidade Federal de Minas Gerais (UFMG), Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, MG, 31270-901, Brazil
| | - David M Mosser
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD, USA
| | - Ricardo Gonçalves
- Laboratório de Biologia de Macrófagos e Monócitos, Departamento de Patologia Geral, Instituto de Ciências Biológicas-Universidade Federal de Minas Gerais (UFMG), Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, MG, 31270-901, Brazil.
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18
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Cell death in the gut epithelium and implications for chronic inflammation. Nat Rev Gastroenterol Hepatol 2020; 17:543-556. [PMID: 32651553 DOI: 10.1038/s41575-020-0326-4] [Citation(s) in RCA: 189] [Impact Index Per Article: 47.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/26/2020] [Indexed: 02/06/2023]
Abstract
The intestinal epithelium has one of the highest rates of cellular turnover in a process that is tightly regulated. As the transit-amplifying progenitors of the intestinal epithelium generate ~300 cells per crypt every day, regulated cell death and sloughing at the apical surface keeps the overall cell number in check. An aberrant increase in the rate of intestinal epithelial cell (IEC) death underlies instances of extensive epithelial erosion, which is characteristic of several intestinal diseases such as inflammatory bowel disease and infectious colitis. Emerging evidence points to a crucial role of necroptosis, autophagy and pyroptosis as important modes of programmed cell death in the intestine in addition to apoptosis. The mode of cell death affects tissue restitution responses and ultimately the long-term risks of intestinal fibrosis and colorectal cancer. A vicious cycle of intestinal barrier breach, misregulated cell death and subsequent inflammation is at the heart of chronic inflammatory and infectious gastrointestinal diseases. This Review discusses the underlying molecular and cellular underpinnings that control programmed cell death in IECs, which emerge during intestinal diseases. Translational aspects of cell death modulation for the development of novel therapeutic alternatives for inflammatory bowel diseases and colorectal cancer are also discussed.
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19
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YAP Aggravates Inflammatory Bowel Disease by Regulating M1/M2 Macrophage Polarization and Gut Microbial Homeostasis. Cell Rep 2020; 27:1176-1189.e5. [PMID: 31018132 DOI: 10.1016/j.celrep.2019.03.028] [Citation(s) in RCA: 231] [Impact Index Per Article: 57.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 12/17/2018] [Accepted: 03/07/2019] [Indexed: 12/30/2022] Open
Abstract
Inflammation, epithelial cell regeneration, macrophage polarization, and gut microbial homeostasis are critical for the pathological processes associated with inflammatory bowel disease (IBD). YAP (Yes-associated protein) is a key component of the Hippo pathway and was recently suggested to promote epithelial cell regeneration for IBD recovery. However, it is unclear how YAP regulates macrophage polarization, inflammation, and gut microbial homeostasis. Although YAP has been shown to promote epithelial regeneration and alleviate IBD, here we show that YAP in macrophages aggravates IBD, accompanied by the production of antimicrobial peptides and changes in gut microbiota. YAP impairs interleukin-4 (IL-4)/IL-13-induced M2 macrophage polarization while promoting lipopolysaccharide (LPS)/interferon γ (IFN-γ)-triggered M1 macrophage activation for IL-6 production. In addition, YAP expression is differently regulated during the induction of M2 versus M1 macrophages. This study suggests that fully understanding the multiple functions of YAP in different cell types is crucial for IBD therapy.
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20
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Liu S, Shen H, Li J, Gong Y, Bao H, Zhang J, Hu L, Wang Z, Gong J. Loganin inhibits macrophage M1 polarization and modulates sirt1/NF-κB signaling pathway to attenuate ulcerative colitis. Bioengineered 2020; 11:628-639. [PMID: 33034242 PMCID: PMC8291865 DOI: 10.1080/21655979.2020.1774992] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Loganin, a major bioactive iridoid glycoside derived from Cornus officinalis, exerts different beneficial biological properties. Recently, loganin has been reported to exhibit potential anti-inflammatory effects in the intestinal tissues, while the detailed mechanisms remain elusive. This study aimed to investigate whether loganin could inhibit the inflammatory response in dextran sulfate sodium (DSS)-induced ulcerative colitis (UC) and to explore possible molecular mechanisms involved in this process. Results showed that oral administration of loganin significantly decreased body weight loss, disease activity index, colon shortening, myeloperoxidase (MPO) activity and pathologic abnormalities in UC mice. Loganin obviously inhibited the mRNA and protein levels of IL-6, TNF-α and IL-1β in colon tissues from UC mice. Furthermore, loganin remarkably reduced macrophage M1 polarization in UC mice evidenced by reduced the number of F4/80 and iNOS dual-stained M1 macrophages, and the expression of M1 macrophage-related pro-inflammatory chemokines/cytokines including MCP-1, CXCL10 as well as COX-2. Further investigation showed that loganin upregulated the mRNA and protein levels of Sirt1, with the inhibition of NF-κB-p65 acetylation in colon tissues from UC mice. Moreover, Sirt1-specific inhibitor Ex527 administration abolished the anti-inflammatory and anti-macrophage M1 polarization effects of loganin in UC. Thus, loganin could inhibit M1 macrophage-mediated inflammation and modulate Sirt1/NF-κB signaling pathway to attenuate DSS-induced UC. Loganin was considered as a viable natural strategy in the treatment of UC.[Figure: see text].
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Affiliation(s)
- Shi Liu
- Department of Gastroenterology, The First Affiliated Hospital of Dalian Medical University , Dalian, People's Republic of China
| | - Hui Shen
- Department of Chinese Medicine, The First Affiliated Hospital of Dalian Medical University , Dalian, People's Republic of China
| | - Jiyan Li
- Department of Chinese Medicine, Dalian Hospital of Traditional Chinese Medicine , Dalian, People's Republic of China
| | - Ying Gong
- Department of Nursing, The First Affiliated Hospital of Dalian Medical University , Dalian, People's Republic of China
| | - Haidong Bao
- Department of Gastroenterology, The First Affiliated Hospital of Dalian Medical University , Dalian, People's Republic of China
| | - Jingyuan Zhang
- Institute (College) of Integrative Medicine, Dalian Medical University , Dalian, People's Republic of China
| | - Lanqing Hu
- Institute (College) of Integrative Medicine, Dalian Medical University , Dalian, People's Republic of China
| | - Zhengpeng Wang
- Institute (College) of Integrative Medicine, Dalian Medical University , Dalian, People's Republic of China
| | - Jian Gong
- Department of Gastroenterology, The First Affiliated Hospital of Dalian Medical University , Dalian, People's Republic of China
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21
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PAM3 protects against DSS-induced colitis by altering the M2:M1 ratio. Sci Rep 2020; 10:6078. [PMID: 32269253 PMCID: PMC7142137 DOI: 10.1038/s41598-020-63143-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 03/16/2020] [Indexed: 12/26/2022] Open
Abstract
Inflammation of the gastrointestinal tract contributes to the development of inflammatory bowel disease (IBD). Human IBD is modeled by administering dextran sulfate sodium (DSS) to mice. In humans and mice, inflammatory M1 macrophages contribute to the progression of IBD whereas immunosuppressive M2 macrophages protect against colitis. The TLR2/1 agonist PAM3CSK4 (PAM3) induces human and murine monocytes to differentiate into immunosuppressive M2 macrophages, suggesting that PAM3 might be of benefit in the prevention/treatment of colitis. PAM3 was therefore administered to mice treated with DSS. As hypothesized, the number of M2 macrophages rose and disease severity decreased. The critical role of M2 macrophages in this process was established by transferring purified M2 macrophages from PAM3 treated control donors into DSS recipients and reducing colitis. These findings suggest that PAM3 may represent a novel approach to the treatment of human IBD.
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22
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Kono Y, Gogatsubo S, Ohba T, Fujita T. Enhanced macrophage delivery to the colon using magnetic lipoplexes with a magnetic field. Drug Deliv 2020; 26:935-943. [PMID: 31530198 PMCID: PMC6758636 DOI: 10.1080/10717544.2019.1662515] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Magnetically guided cell delivery systems would be valuable to achieve effective macrophage-based cell therapy for colonic inflammatory diseases. In the current study, we developed a method for the efficient and simultaneous introduction of superparamagnetic iron oxide nanoparticles (SPIONs) and plasmid DNA (pDNA) into RAW264 murine macrophage-like cells using SPION-incorporated cationic liposome/pDNA complexes (magnetic lipoplexes). SPIONs and pDNA were introduced for magnetization and functionalization of the macrophages, respectively. We also evaluated the adhesive properties of magnetized RAW264 cells using magnetic lipoplexes in the murine colon under a magnetic field. Significant cellular association and gene expression without cytotoxicity were observed when magnetic cationic liposomes and pDNA were mixed at a weight ratio of 10:1, and SPION concentration and magnetic field exposure time was 0.1 mg/mL and 10 min, respectively. We also observed that cytokine production in magnetized RAW264 cells was similar to that in non-treated RAW264 cells, whereas nitric oxide production was significantly increased in magnetized RAW264 cells. Furthermore, magnetized RAW264 cells highly adhered to a Caco-2 cell monolayer and colon in mice, under a magnetic field. These results suggest that this magnetic cell delivery system can improve the colonic delivery of macrophages and its therapeutic efficacy against colonic inflammatory diseases.
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Affiliation(s)
- Yusuke Kono
- Ritsumeikan-Global Innovation Research Organization, Ritsumeikan University , Kusatsu , Japan.,Laboratory of Molecular Pharmacokinetics, College of Pharmaceutical Sciences, Ritsumeikan University , Kusatsu , Japan
| | - Serika Gogatsubo
- Laboratory of Molecular Pharmacokinetics, College of Pharmaceutical Sciences, Ritsumeikan University , Kusatsu , Japan
| | - Takeshi Ohba
- Laboratory of Molecular Pharmacokinetics, College of Pharmaceutical Sciences, Ritsumeikan University , Kusatsu , Japan
| | - Takuya Fujita
- Ritsumeikan-Global Innovation Research Organization, Ritsumeikan University , Kusatsu , Japan.,Laboratory of Molecular Pharmacokinetics, College of Pharmaceutical Sciences, Ritsumeikan University , Kusatsu , Japan.,Research Center for Drug Discovery and Development, Ritsumeikan University , Kusatsu , Japan
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23
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Nackiewicz D, Dan M, Speck M, Chow SZ, Chen YC, Pospisilik JA, Verchere CB, Ehses JA. Islet Macrophages Shift to a Reparative State following Pancreatic Beta-Cell Death and Are a Major Source of Islet Insulin-like Growth Factor-1. iScience 2019; 23:100775. [PMID: 31962237 PMCID: PMC6971395 DOI: 10.1016/j.isci.2019.100775] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 09/24/2019] [Accepted: 12/10/2019] [Indexed: 12/21/2022] Open
Abstract
Macrophages play a dynamic role in tissue repair following injury. Here we found that following streptozotocin (STZ)-induced beta-cell death, mouse islet macrophages had increased Igf1 expression, decreased proinflammatory cytokine expression, and transcriptome changes consistent with macrophages undergoing efferocytosis and having an enhanced state of metabolism. Macrophages were the major, if not sole, contributors to islet insulin-like growth factor-1 (IGF-1) production. Adoptive transfer experiments showed that macrophages can maintain insulin secretion in vivo following beta-cell death with no effects on islet cell turnover. IGF-1 neutralization during STZ treatment decreased insulin secretion without affecting islet cell apoptosis or proliferation. Interestingly, high-fat diet (HFD) combined with STZ further skewed islet macrophages to a reparative state. Finally, islet macrophages from db/db mice also expressed decreased proinflammatory cytokines and increased Igf1 mRNA. These data have important implications for islet biology and pathology and show that islet macrophages preserve their reparative state following beta-cell death even during HFD feeding and severe hyperglycemia. Macrophages are a major source of IGF-1 protein within mouse pancreatic islets Post-beta-cell death islet macrophages shift to a reparative state Beta-cell death causes macrophage transcriptome changes consistent with efferocytosis This change can occur even in the presence of HFD feeding or severe hyperglycemia
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Affiliation(s)
- Dominika Nackiewicz
- Department of Surgery, Faculty of Medicine, University of British Columbia, BC Children's Hospital Research Institute, 950 W 28 Avenue, Vancouver V5Z 4H4, Canada
| | - Meixia Dan
- Department of Surgery, Faculty of Medicine, University of British Columbia, BC Children's Hospital Research Institute, 950 W 28 Avenue, Vancouver V5Z 4H4, Canada
| | - Madeleine Speck
- Department of Surgery, Faculty of Medicine, University of British Columbia, BC Children's Hospital Research Institute, 950 W 28 Avenue, Vancouver V5Z 4H4, Canada
| | - Samuel Z Chow
- Department of Surgery, Faculty of Medicine, University of British Columbia, BC Children's Hospital Research Institute, 950 W 28 Avenue, Vancouver V5Z 4H4, Canada
| | - Yi-Chun Chen
- Department of Surgery, Faculty of Medicine, University of British Columbia, BC Children's Hospital Research Institute, 950 W 28 Avenue, Vancouver V5Z 4H4, Canada
| | - J Andrew Pospisilik
- Van Andel Research Institute, 333 Bostwick Avenue NE, Grand Rapids, MI 49503, USA
| | - C Bruce Verchere
- Department of Surgery, Faculty of Medicine, University of British Columbia, BC Children's Hospital Research Institute, 950 W 28 Avenue, Vancouver V5Z 4H4, Canada; Department of Pathology and Laboratory Medicine, BC Children's Hospital Research Institute, 950 W 28 Avenue, Vancouver V5Z 4H4, Canada.
| | - Jan A Ehses
- Department of Surgery, Faculty of Medicine, University of British Columbia, BC Children's Hospital Research Institute, 950 W 28 Avenue, Vancouver V5Z 4H4, Canada; Department of Health Sciences and Technology, Institute of Food, Nutrition, and Health, Swiss Federal Institute of Technology, ETH Zürich, Schwerzenbach CH-8603, Switzerland.
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24
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Stimulator of interferon genes (STING) activation exacerbates experimental colitis in mice. Sci Rep 2019; 9:14281. [PMID: 31582793 PMCID: PMC6776661 DOI: 10.1038/s41598-019-50656-5] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 09/16/2019] [Indexed: 02/06/2023] Open
Abstract
Detection of cytoplasmic DNA by the host’s innate immune system is essential for microbial and endogenous pathogen recognition. In mammalian cells, an important sensor is the stimulator of interferon genes (STING) protein, which upon activation by bacterially-derived cyclic dinucleotides (cDNs) or cytosolic dsDNA (dsDNA), triggers type I interferons and pro-inflammatory cytokine production. Given the abundance of bacterially-derived cDNs in the gut, we determined whether STING deletion, or stimulation, acts to modulate the severity of intestinal inflammation in the dextran sodium sulphate (DSS) model of colitis. DSS was administered to Tmem173gt (STING-mutant) mice and to wild-type mice co-treated with DSS and a STING agonist. Colitis severity was markedly reduced in the DSS-treated Tmem173gt mice and greatly exacerbated in wild-type mice co-treated with the STING agonist. STING expression levels were also assessed in colonic tissues, murine bone marrow derived macrophages (BMDMs), and human THP-1 cells. M1 and M2 polarized THP-1 and murine BMDMs were also stimulated with STING agonists and ligands to assess their responses. STING expression was increased in both murine and human M1 polarized macrophages and a STING agonist repolarized M2 macrophages towards an M1-like subtype. Our results suggest that STING is involved in the host’s response to acutely-induced colitis.
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25
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Lo Y, Sauve JP, Menzies SC, Steiner TS, Sly LM. Phosphatidylinositol 3-kinase p110δ drives intestinal fibrosis in SHIP deficiency. Mucosal Immunol 2019; 12:1187-1200. [PMID: 31358861 DOI: 10.1038/s41385-019-0191-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 06/23/2019] [Accepted: 07/15/2019] [Indexed: 02/04/2023]
Abstract
Crohn's disease is an immune-mediated disease characterized by inflammation along the gastrointestinal tract. Fibrosis requiring surgery occurs in one-third of people with Crohn's disease but there are no treatments for intestinal fibrosis. Mice deficient in the SH2 domain-containing inositolpolyphosphate 5'-phosphatase (SHIP), a negative regulator of phosphatidylinositol 3-kinase (PI3K) develop spontaneous Crohn's disease-like intestinal inflammation and arginase I (argI)-dependent fibrosis. ArgI is up-regulated in SHIP deficiency by PI3Kp110δ activity. Thus, we hypothesized that SHIP-deficient mice develop fibrosis due to increased PI3Kp110δ activity. In SHIP-deficient mice, genetic ablation or pharmacological inhibition of PI3Kp110δ activity reduced intestinal fibrosis, including muscle thickening, accumulation of vimentin+ mesenchymal cells, and collagen deposition. PI3Kp110δ deficiency or inhibition also reduced ileal inflammation in SHIP-deficient mice suggesting that PI3Kp110δ may contribute to inflammation. Targeting PI3Kp110δ activity may be an effective strategy to reduce intestinal fibrosis, and may be particularly effective in the subset of people with Crohn's disease, who have low SHIP activity.
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Affiliation(s)
- Young Lo
- Division of Gastroenterology, Department of Pediatrics, BC Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada
| | - Jean Philippe Sauve
- Division of Gastroenterology, Department of Pediatrics, BC Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada
| | - Susan C Menzies
- Division of Gastroenterology, Department of Pediatrics, BC Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada
| | - Theodore S Steiner
- Division of Infectious Diseases, Department of Medicine, BC Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada
| | - Laura M Sly
- Division of Gastroenterology, Department of Pediatrics, BC Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada.
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26
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Kozicky LK, Menzies SC, Hotte N, Madsen KL, Sly LM. Intravenous immunoglobulin (IVIg) or IVIg-treated macrophages reduce DSS-induced colitis by inducing macrophage IL-10 production. Eur J Immunol 2019; 49:1251-1268. [PMID: 31054259 DOI: 10.1002/eji.201848014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 03/24/2019] [Accepted: 05/02/2019] [Indexed: 12/19/2022]
Abstract
Intravenous immunoglobulin (IVIg) is used to treat immune-mediated diseases but its mechanism of action is poorly understood. We have reported that co-treatment with IVIg and lipopolysaccharide activates macrophages to produce large amounts of anti-inflammatory IL-10 in vitro. Thus, we asked whether IVIg-treated macrophages or IVIg could reduce intestinal inflammation in mice during dextran sulfate sodium (DSS)-induced colitis by inducing macrophage IL-10 production in vivo. Adoptive transfer of IVIg-treated macrophages reduces intestinal inflammation in mice and collagen accumulation post-DSS. IVIg treatment also reduces DSS-induced intestinal inflammation and its activity is dependent on the Fc portion of the antibody. Ex vivo, IVIg induces IL-10 production and reduces IL-12/23p40 and IL-1β production in colon explant cultures. Co-staining tissues for mRNA, we demonstrate that macrophages are the source of IL-10 in IVIg-treated mice; and using IL-10-GFP reporter mice, we demonstrate that IVIg induces IL-10 production by intestinal macrophages. Finally, IVIg-mediated protection is lost in mice deficient in macrophage IL-10 production (LysMcre+/- IL-10fl/fl mice). Together, our data demonstrate a novel, in vivo mechanism of action for IVIg. IVIg-treated macrophages or IVIg could be used to treat people with intestinal inflammation and may be particularly useful for people with inflammatory bowel disease, who are refractory to therapy.
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Affiliation(s)
- Lisa K Kozicky
- Department of Pediatrics, Division of Gastroenterology, BC Children's Hospital and the University of British Columbia, Vancouver, British Columbia, Canada
| | - Susan C Menzies
- Department of Pediatrics, Division of Gastroenterology, BC Children's Hospital and the University of British Columbia, Vancouver, British Columbia, Canada
| | - Naomi Hotte
- Department of Medicine, Division of Gastroenterology, University of Alberta, Edmonton, Alberta, Canada
| | - Karen L Madsen
- Department of Medicine, Division of Gastroenterology, University of Alberta, Edmonton, Alberta, Canada
| | - Laura M Sly
- Department of Pediatrics, Division of Gastroenterology, BC Children's Hospital and the University of British Columbia, Vancouver, British Columbia, Canada
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27
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Kang SA, Park MK, Park SK, Choi JH, Lee DI, Song SM, Yu HS. Adoptive transfer of Trichinella spiralis-activated macrophages can ameliorate both Th1- and Th2-activated inflammation in murine models. Sci Rep 2019; 9:6547. [PMID: 31024043 PMCID: PMC6484028 DOI: 10.1038/s41598-019-43057-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 04/15/2019] [Indexed: 02/06/2023] Open
Abstract
Trichinella spiralis is a zoonotic nematode and food borne parasite and infection with T. spiralis leads to suppression of the host immune response and other immunopathologies. Alternative activated macrophages (M2) as well as Treg cells, a target for immunomodulation by the helminth parasite, play a critical role in initiating and modulating the host immune response to parasite. The precise mechanism by which helminths modulate host immune response is not fully understood. To determine the functions of parasite-induced M2 macrophages, we compared the effects of M1 and M2 macrophages obtained from Trichinella spiralis-infected mice with those of T. spiralis excretory/secretory (ES) protein-treated macrophages on experimental intestinal inflammation and allergic airway inflammation. T. spiralis infection induced M2 macrophage polarization by increasing the expression of CD206, ARG1, and Fizz2. In a single application, we introduced macrophages obtained from T. spiralis-infected mice and T. spiralis ES protein-treated macrophages into mice tail veins before the induction of dextran sulfate sodium (DSS)-induced colitis, ovalbumin (OVA)-alum sensitization, and OVA challenge. Colitis severity was assessed by determining the severity of colitis symptoms, colon length, histopathologic parameters, and Th1-related inflammatory cytokine levels. Compared with the DSS-colitis group, T. spiralis-infected mice and T. spiralis ES protein-treated macrophages showed significantly lower disease activity index (DAI) at sacrifice and smaller reductions of body weight and proinflammatory cytokine level. The severity of allergic airway inflammation was assessed by determining the severity of symptoms of inflammation, airway hyperresponsiveness (AHR), differential cell counts, histopathologic parameters, and levels of Th2-related inflammatory cytokines. Severe allergic airway inflammation was induced after OVA-alum sensitization and OVA challenge, which significantly increased Th2-related cytokine levels, eosinophil infiltration, and goblet cell hyperplasia in the lung. However, these severe allergic symptoms were significantly decreased in T. spiralis-infected mice and T. spiralis ES protein-treated macrophages. Helminth infection and helminth ES proteins induce M2 macrophages. Adoptive transfer of macrophages obtained from helminth-infected mice and helminth ES protein-activated macrophages is an effective treatment for preventing and treating airway allergy in mice and is promising as a therapeutic for treating inflammatory diseases.
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Affiliation(s)
- Shin Ae Kang
- Department of Parasitology and Tropical Medicine, School of Medicine, Pusan National University, Yangsan, Gyeongsangnam-do, Republic of Korea
| | - Mi-Kyung Park
- Department of Parasitology and Tropical Medicine, School of Medicine, Pusan National University, Yangsan, Gyeongsangnam-do, Republic of Korea
| | - Sang Kyun Park
- Department of Parasitology and Tropical Medicine, School of Medicine, Pusan National University, Yangsan, Gyeongsangnam-do, Republic of Korea
| | - Jun Ho Choi
- Department of Parasitology and Tropical Medicine, School of Medicine, Pusan National University, Yangsan, Gyeongsangnam-do, Republic of Korea
| | - Da In Lee
- Department of Parasitology and Tropical Medicine, School of Medicine, Pusan National University, Yangsan, Gyeongsangnam-do, Republic of Korea
| | - So Myong Song
- Department of Parasitology and Tropical Medicine, School of Medicine, Pusan National University, Yangsan, Gyeongsangnam-do, Republic of Korea
| | - Hak Sun Yu
- Department of Parasitology and Tropical Medicine, School of Medicine, Pusan National University, Yangsan, Gyeongsangnam-do, Republic of Korea.
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28
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Abstract
Macrophages are innate immune cells, which have important roles in the inflammatory response to infections or tissue injury, and have an equally important role in the resolution of inflammation. Macrophages play a key part in directing the innate immune response and subsequent adaptive immune response. They can acquire a variety of distinct but also overlapping activation states, depending on the local microenvironment, in order to perform these functions. Stimuli, such as IFNγ and LPS, can promote an inflammatory activation state, which is associated with the production of reactive oxygen species, and pro-inflammatory cytokines and chemokines. Immune complexes and LPS can promote an anti-inflammatory activation state to prevent damage to the host, which is associated with the production of high levels of the anti-inflammatory cytokine IL-10 and low levels of pro-inflammatory cytokines. Wound-healing macrophages can be activated by IL-4 or IL-13 and have roles in tissue remodeling and the resolution of inflammation. Macrophages are present in nearly every tissue of the body and are important for maintaining homeostasis, but their dysfunction can also lead to diseases, such as inflammatory bowel disease. To study the role macrophages play in a complex in vivo environment, depletion and reconstitution experiments can be utilized. Clodronate liposomes are an effective and versatile way to deplete macrophages in vivo; they can allow selective depletion from tissues of interest and can be used on transgenic mice. However, clodronate liposomes deplete all types of macrophages as well as dendritic cells, so other strategies are required in parallel to determine whether macrophages or macrophages of a particular activation state are required. Reconstitution of macrophages by adoptive transfer can be performed, with or without prior depletion, to further suggest that the observed effect is macrophage dependent. Macrophages activated ex vivo or macrophages from transgenic mice can be adoptively transferred during disease models to determine whether a specific protein or activation state affects disease outcome. Macrophage contribution to health and disease can be effectively studied using depletion with clodronate liposomes and by macrophage reconstitution, as demonstrated in this chapter.
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29
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Hibbs ML, Raftery AL, Tsantikos E. Regulation of hematopoietic cell signaling by SHIP-1 inositol phosphatase: growth factors and beyond. Growth Factors 2018; 36:213-231. [PMID: 30764683 DOI: 10.1080/08977194.2019.1569649] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
SHIP-1 is a hematopoietic-specific inositol phosphatase activated downstream of a multitude of receptors including those for growth factors, cytokines, antigen, immunoglobulin and toll-like receptor agonists where it exerts inhibitory control. While it is constitutively expressed in all immune cells, SHIP-1 expression is negatively regulated by the inflammatory and oncogenic micro-RNA miR-155. Knockout mouse studies have shown the importance of SHIP-1 in various immune cell subsets and have revealed a range of immune-mediated pathologies that are engendered due to loss of SHIP-1's regulatory activity, impelling investigations into the role of SHIP-1 in human disease. In this review, we provide an overview of the literature relating to the role of SHIP-1 in hematopoietic cell signaling and function, we summarize recent reports that highlight the dysregulation of the SHIP-1 pathway in cancers, autoimmune disorders and inflammatory diseases, and lastly we discuss the importance of SHIP-1 in restraining myeloid growth factor signaling.
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Affiliation(s)
- Margaret L Hibbs
- a Department of Immunology and Pathology , Alfred Medical Research and Education Precinct Monash University , Melbourne , Victoria , Australia
| | - April L Raftery
- a Department of Immunology and Pathology , Alfred Medical Research and Education Precinct Monash University , Melbourne , Victoria , Australia
| | - Evelyn Tsantikos
- a Department of Immunology and Pathology , Alfred Medical Research and Education Precinct Monash University , Melbourne , Victoria , Australia
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30
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Abron JD, Singh NP, Price RL, Nagarkatti M, Nagarkatti PS, Singh UP. Genistein induces macrophage polarization and systemic cytokine to ameliorate experimental colitis. PLoS One 2018; 13:e0199631. [PMID: 30024891 PMCID: PMC6053137 DOI: 10.1371/journal.pone.0199631] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 06/11/2018] [Indexed: 12/11/2022] Open
Abstract
Mucosal changes in Crohn’s disease (CD) and ulcerative colitis (UC), two major forms of inflammatory bowel disease (IBD), are characterized by a prominent infiltration of inflammatory cells including lymphocytes, macrophages, T cells and neutrophils. The precise etiology of IBD is unknown but it involves a complex interplay of factors associated with the immune system, environment, host genotype and enteric commensal bacteria. As there is no known safe cure for IBD, natural alternative therapeutic options without side effects are urgently needed. To this end, Soy-based foods, which have been eaten for centuries in Asian countries, have potential benefits, including lowering the incidence of coronary heart disease, atherosclerosis, type-2 diabetes, allergic response, and autoimmune diseases. This study describes the effect of Soy isoflavons 4', 5, 7 Trihydroxyisoflavone (genistein) on dextran sodium sulphate (DSS) induced experimental colitis. The extent and severity of disease was analyzed through body weight, histopathological analysis, cellular immune response, systemic cytokine levels, and inflammation score using a disease activity index. Genistein treatment significantly attenuated DSS-induced colitis severity and resulted in increase in body weight, colon length and reduction in inflammation score. Genistein also skews M1 macrophages towards the M2 phenotype. Further, gen also reduced the systemic cytokine levels as compared to vehicle control. This serves as the first detailed study towards natural soya based product that shows the polarization of M1 towards M2 macrophages, and reduction of systemic cytokine in part to attenuate the colitis symptoms. Thus, our work demonstrates that genistein, a soya compound, may be useful for the treatment of IBD.
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Affiliation(s)
- Jessicca D. Abron
- Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina, Columbia, SC
| | - Narendra P. Singh
- Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina, Columbia, SC
| | - Robert L. Price
- Cell Biology and Anatomy, School of Medicine, University of South Carolina, Columbia, SC, United States of America
| | - Mitzi Nagarkatti
- Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina, Columbia, SC
| | - Prakash S. Nagarkatti
- Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina, Columbia, SC
| | - Udai P. Singh
- Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina, Columbia, SC
- * E-mail:
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31
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Monajemi M, Pang YCF, Bjornson S, Menzies SC, van Rooijen N, Sly LM. Malt1 blocks IL-1β production by macrophages in vitro and limits dextran sodium sulfate-induced intestinal inflammation in vivo. J Leukoc Biol 2018; 104:557-572. [PMID: 29901822 DOI: 10.1002/jlb.3vma0118-019r] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 05/03/2018] [Accepted: 05/15/2018] [Indexed: 01/02/2023] Open
Abstract
This study tested the hypothesis that Malt1 deficiency in macrophages contributes to dextran sodium sulfate (DSS)-induced intestinal inflammation in Malt1-deficient mice. In people, combined immunodeficiency caused by a homozygous mutation in the MALT1 gene is associated with increased susceptibility to bacterial infections and chronic inflammation, including severe inflammation along the gastrointestinal tract. The consequences of Malt1 deficiency have largely been attributed to its role in lymphocytes, but Malt1 is also expressed in macrophages, where it is activated downstream of TLR4 and dectin-1. The effect of Malt1 deficiency in murine macrophages and its contribution to DSS-induced colitis have not been investigated. Our objectives were to compare the susceptibility of Malt1+/+ and Malt1-/- mice to DSS-induced colitis, to determine the contribution of macrophages to DSS-induced colitis in Malt1-/- mice, and to assess the effect of innate immune stimuli on Malt1-/- macrophage inflammatory responses. We found that Malt1 deficiency exacerbates DSS-induced colitis in mice, accompanied by higher levels of IL-1β, and that macrophages and IL-1 signaling contribute to pathology in Malt1-/- mice. Malt1-/- macrophages produce more IL-1β in response to either TLR4 or dectin-1 ligation, whereas inhibition of Malt1 proteolytic (paracaspase) activity blocked IL-1β production. TLR4 or dectin-1 stimulation induced Malt1 protein levels but decreased its paracaspase activity. Taken together, these data support the hypothesis that Malt1-/- macrophages contribute to increased susceptibility of Malt1-/- mice to DSS-induced colitis, which is dependent on IL-1 signaling. Increased IL-1β production by MALT1-deficient macrophages may also contribute to chronic inflammation in people deficient in MALT1.
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Affiliation(s)
- Mahdis Monajemi
- Department of Pediatrics, Division of Gastroenterology, BC Children's Hospital Research Institute, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Yvonne C F Pang
- Department of Pediatrics, Division of Gastroenterology, BC Children's Hospital Research Institute, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Saelin Bjornson
- Department of Pediatrics, Division of Gastroenterology, BC Children's Hospital Research Institute, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Susan C Menzies
- Department of Pediatrics, Division of Gastroenterology, BC Children's Hospital Research Institute, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Nico van Rooijen
- Department of Molecular Cell Biology, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Laura M Sly
- Department of Pediatrics, Division of Gastroenterology, BC Children's Hospital Research Institute, The University of British Columbia, Vancouver, British Columbia, Canada
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32
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Li J, Zhang J, Guo H, Yang S, Fan W, Ye N, Tian Z, Yu T, Ai G, Shen Z, He H, Yan P, Lin H, Luo X, Li H, Wu Y. Critical Role of Alternative M2 Skewing in miR-155 Deletion-Mediated Protection of Colitis. Front Immunol 2018; 9:904. [PMID: 29774026 PMCID: PMC5943557 DOI: 10.3389/fimmu.2018.00904] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 04/11/2018] [Indexed: 01/15/2023] Open
Abstract
Inflammatory bowel disease (IBD) is associated with dysregulation of both innate and adaptive immune response in the intestine. MicroRNA (miR)-155 is frequently expressed and functions in many immune cell types. Besides its function in adaptive immunity, miR-155 is a key regulator of the innate immune response in macrophages, dendritic cells, and even in epithelia cells. Although the roles of miR-155 within T and B lymphocytes in colitis have been reported, its function in innate immune cells has not been thoroughly examined. In this study, the dextran sulfate sodium (DSS)-induced colitis model was established in wild-type (WT) and miR-155−/− mice. Our results showed that miR-155 deficiency in macrophages recapitulated the alleviated colitis feature of miR-155−/− mice and appeared to skew toward the alterative M2 phenotype. Notably, the predominance of M2 in colon can result in dampened intestinal immune cell proliferation and inhibit CD4 T cell polarization toward Th1 and Th17. Moreover, C/EBPβ and SOCS1 were demonstrated as two key functional targets in this process. We also provided evidence for use of miR-155 inhibitor to treat colitis. Collectively, the findings highlight the central role of alternative M2 skewing for miR-155 function in colitis and reveal that macrophages might be a main target for therapeutics.
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Affiliation(s)
- Jintao Li
- Institute of Tropical Medicine, Army Medical University, Chongqing, China.,Department of Microbiology, College of Basic Medicine, Army Medical University, Chongqing, China
| | - Ji Zhang
- Institute of Immunology, PLA, Army Medical University, Chongqing, China
| | - Hongxia Guo
- Institute of Tropical Medicine, Army Medical University, Chongqing, China.,Department of Microbiology, College of Basic Medicine, Army Medical University, Chongqing, China
| | - Shimin Yang
- Department of Gastroenterology, Xinqiao Hospital, Army Medical University, Chongqing, China
| | - Weiping Fan
- Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan, China
| | - Nan Ye
- Institute of Tropical Medicine, Army Medical University, Chongqing, China
| | - Zhiqiang Tian
- Institute of Immunology, PLA, Army Medical University, Chongqing, China
| | - Tiantian Yu
- Institute of Tropical Medicine, Army Medical University, Chongqing, China
| | - Guoping Ai
- Institute of Tropical Medicine, Army Medical University, Chongqing, China
| | - Zigang Shen
- Institute of Immunology, PLA, Army Medical University, Chongqing, China
| | - Haiyang He
- Institute of Immunology, PLA, Army Medical University, Chongqing, China
| | - Ping Yan
- Department of Obstetrics and Gynecology, Southwest Hospital, Army Medical University, Chongqing, China
| | - Hui Lin
- Institute of Tropical Medicine, Army Medical University, Chongqing, China
| | - Xue Luo
- Institute of Tropical Medicine, Army Medical University, Chongqing, China
| | - Hongli Li
- Department of Histology and Embryology, College of Basic Medicine, Army Medical University, Chongqing, China
| | - Yuzhang Wu
- Institute of Immunology, PLA, Army Medical University, Chongqing, China
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33
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Zhu Y, Zhou J, Feng Y, Chen L, Zhang L, Yang F, Zha H, Wang X, Han X, Shu C, Wan YY, Li QJ, Guo B, Zhu B. Control of Intestinal Inflammation, Colitis-Associated Tumorigenesis, and Macrophage Polarization by Fibrinogen-Like Protein 2. Front Immunol 2018; 9:87. [PMID: 29441068 PMCID: PMC5797584 DOI: 10.3389/fimmu.2018.00087] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 01/11/2018] [Indexed: 12/12/2022] Open
Abstract
Fibrinogen-like protein 2 (Fgl2) is critical for immune regulation in the inflammatory state. Elevated Fgl2 levels are observed in patients with inflammatory bowel disease (IBD), but little is known about its functional significance. In this study, we sought to investigate the role of Fgl2 in the development of intestinal inflammation and colitis-associated colorectal cancer (CAC). Here, we report that Fgl2 deficiency increased susceptibility to dextran sodium sulfate-induced colitis and CAC in a mouse model. During colitis development, the expression of the membrane-bound and secreted forms of Fgl2 (mFgl2 and sFgl2, respectively) in the colon were increased and predominantly expressed by colonic macrophages. In addition, using bone marrow chimeric mice, we determined that Fgl2 function in colitis is strictly related to its expression in the hematopoietic cells. Loss of Fgl2 induced the polarization of M1, but suppressed that of M2 both in vivo and in vitro, independent of intestinal inflammation. Thus, Fgl2 suppresses intestinal inflammation and CAC development through its role in macrophage polarization and may serve as a therapeutic target in inflammatory diseases, including IBD.
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Affiliation(s)
- Ying Zhu
- Institute of Cancer, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Jie Zhou
- Institute of Cancer, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Yi Feng
- Institute of Cancer, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Liying Chen
- Institute of Cancer, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Longhui Zhang
- Institute of Cancer, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Fei Yang
- Department of Pathogenic Biology, Third Military Medical University, Chongqing, China
| | - Haoran Zha
- Institute of Cancer, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Xinxin Wang
- Institute of Cancer, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Xiao Han
- Institute of Cancer, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Chi Shu
- Institute of Cancer, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Yisong Y Wan
- Department of Microbiology and Immunology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Qi-Jing Li
- Department of Immunology, Duke University Medical Center, Durham, NC, United States
| | - Bo Guo
- Department of Pathogenic Biology, Third Military Medical University, Chongqing, China
| | - Bo Zhu
- Institute of Cancer, Xinqiao Hospital, Third Military Medical University, Chongqing, China
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34
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Dobranowski P, Sly LM. SHIP negatively regulates type II immune responses in mast cells and macrophages. J Leukoc Biol 2018; 103:1053-1064. [PMID: 29345374 DOI: 10.1002/jlb.3mir0817-340r] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 12/11/2017] [Accepted: 12/14/2017] [Indexed: 12/13/2022] Open
Abstract
SHIP is a hematopoietic-specific lipid phosphatase that dephosphorylates PI3K-generated PI(3,4,5)-trisphosphate. SHIP removes this second messenger from the cell membrane blunting PI3K activity in immune cells. Thus, SHIP negatively regulates mast cell activation downstream of multiple receptors. SHIP has been referred to as the "gatekeeper" of mast cell degranulation as loss of SHIP dramatically increases degranulation or permits degranulation in response to normally inert stimuli. SHIP also negatively regulates Mϕ activation, including both pro-inflammatory cytokine production downstream of pattern recognition receptors, and alternative Mϕ activation by the type II cytokines, IL-4, and IL-13. In the SHIP-deficient (SHIP-/- ) mouse, increased mast cell and Mϕ activation leads to spontaneous inflammatory pathology at mucosal sites, which is characterized by high levels of type II inflammatory cytokines. SHIP-/- mast cells and Mϕs have both been implicated in driving inflammation in the SHIP-/- mouse lung. SHIP-/- Mϕs drive Crohn's disease-like intestinal inflammation and fibrosis, which is dependent on heightened responses to innate immune stimuli generating IL-1, and IL-4 inducing abundant arginase I. Both lung and gut pathology translate to human disease as low SHIP levels and activity have been associated with allergy and with Crohn's disease in people. In this review, we summarize seminal literature and recent advances that provide insight into SHIP's role in mast cells and Mϕs, the contribution of these cell types to pathology in the SHIP-/- mouse, and describe how these findings translate to human disease and potential therapies.
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Affiliation(s)
- Peter Dobranowski
- Division of Gastroenterology, Department of Pediatrics, BC Children's Hospital Research Institute, Vancouver, British Columbia, Canada
- Department of Pediatrics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Laura M Sly
- Division of Gastroenterology, Department of Pediatrics, BC Children's Hospital Research Institute, Vancouver, British Columbia, Canada
- Department of Pediatrics, University of British Columbia, Vancouver, British Columbia, Canada
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35
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Ju S, Ge Y, Li P, Tian X, Wang H, Zheng X, Ju S. Dietary quercetin ameliorates experimental colitis in mouse by remodeling the function of colonic macrophages via a heme oxygenase-1-dependent pathway. Cell Cycle 2018; 17:53-63. [PMID: 28976231 DOI: 10.1080/15384101.2017.1387701] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Inflammatory bowel disease (IBD) results from a chronic intestinal inflammation and tissue destruction via an aberrant immune-driven inflammatory response towards an altered gut microbiota. Dietary intervention is becoming an attractive avenue for the therapy of colitis because diet is a key determinant of the mucosal immune response. Quercetin (QCN) is the most common in nature and the major representative of dietary antioxidant flavonoids, which has been demonstrated to influence the progression of colitis. However, the underlying mechanism of QCN on intestinal immunomodulation remains unclear. Here, our study demonstrated dietary QCN could ameliorate experimental colitis in part by modulating the anti-inflammatory effects and bactericidal capacity of macrophages via Heme oxygenase-1 (Hmox1, HO-1) dependent pathway. It suggested that QCN might restore the proper intestinal host-microbe relationship to ameliorate the colitis via rebalancing the pro-inflammatory, anti-inflammatory and bactericidal function of enteric macrophages. Hence, modulating the function of intestinal macrophages with dietary administration of QCN to restore the immunological hemostasis and rebalance the enteric commensal flora is a potential and promising strategy for IBD therapy.
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Affiliation(s)
- Songwen Ju
- a Central Laboratory , Affiliated Suzhou Hospital of Nanjing Medical University , Suzhou Municipal Hospital , Suzhou , Jiangsu Province , China.,c Suzhou Digestive Diseases and Nutrition Research Center , Affiliated Suzhou Hospital of Nanjing Medical University , Suzhou Municipal Hospital , Suzhou , Jiangsu Province , China
| | - Yan Ge
- b Department of Immunology , School of Biology and Basic Medical Sciences , Medical College , Soochow University , Suzhou , Jiangsu Province , China
| | - Ping Li
- c Suzhou Digestive Diseases and Nutrition Research Center , Affiliated Suzhou Hospital of Nanjing Medical University , Suzhou Municipal Hospital , Suzhou , Jiangsu Province , China
| | - Xinxin Tian
- d Nanjing Municipal Government Hospital , Nanjing , Jiangsu Province , China
| | - Haiyan Wang
- b Department of Immunology , School of Biology and Basic Medical Sciences , Medical College , Soochow University , Suzhou , Jiangsu Province , China
| | - Xiaocui Zheng
- b Department of Immunology , School of Biology and Basic Medical Sciences , Medical College , Soochow University , Suzhou , Jiangsu Province , China
| | - Songguang Ju
- b Department of Immunology , School of Biology and Basic Medical Sciences , Medical College , Soochow University , Suzhou , Jiangsu Province , China
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36
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Yazeji T, Moulari B, Beduneau A, Stein V, Dietrich D, Pellequer Y, Lamprecht A. Nanoparticle-based delivery enhances anti-inflammatory effect of low molecular weight heparin in experimental ulcerative colitis. Drug Deliv 2017; 24:811-817. [PMID: 28509629 PMCID: PMC8240985 DOI: 10.1080/10717544.2017.1324530] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 04/25/2017] [Indexed: 01/07/2023] Open
Abstract
Epithelial administration of low molecular weight heparin (LMWH) has proven its therapeutic efficiency in ulcerative colitis (UC) but still lacks of a sufficiently selective drug delivery system. Polymeric nanoparticles were used here not only to protect LMWH from intestinal degradation but also to provide targeted delivery to inflamed tissue in experimental colitis mice. LMWH was associated with polymethacrylate nanoparticles (NP) type A (PEMT-A) or type B (PEMT-B) of a size: 150 nm resulting in a maximum drug loading: 0.1 mg/mg. In a lipopolysaccharide-stimulated macrophages both, free LMWH and LMWH-NP have significantly reduced the cytokines secretion independently from cellular uptake. The in-vivo therapeutic efficiency was dose dependent as at low doses (100 IU/kg) only minor differences between free LMWH and LMWH-NP were found and the superiority of LMWH-NP became prominent with dose increase (500 IU/kg). Administration of LMWH-NP at 500 IU/kg has markedly improved the clinical activity as compared to LMWH while similarly pathophysiological indicators revealed increased therapeutic outcome in presence of NP compared to LMWH alone: Myeloperoxidase (Colitis control: 10 480 ± 5335, LMWH-PEMT-A NP: 1507 ± 2165, LMWH-PEMT-B NP: 382 ± 143, LMWH: 8549 ± 5021 units/g) and tumor necrosis factor: (Colitis control: 1636 ± 544, LMWH-PEMT-A NP: 511 ± 506, LMWH-PEMT-B NP: 435 ± 473, LMWH: 1110 ± 309 pg/g). Associating LMWH with NP is improving the anti-inflammatory efficiency of LMWH in-vivo by its protection against degradation in luminal environment and selective drug delivery. Such a combination holds promise for a highly specific therapy by its double selectivity towards the inflamed intestinal tissue. LMWH-PEMT NP have significantly improved the clinical activity in-vivo in comparison to free LMWH.
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Affiliation(s)
- Tawfek Yazeji
- Department of Pharmaceutics, University of Bonn, Bonn, Germany
| | | | | | - Valentin Stein
- Institute of Physiology II, Medical Faculty, University of Bonn, Bonn, Germany, and
| | - Dirk Dietrich
- Department of Neurosurgery, University of Bonn, Bonn, Germany
| | | | - Alf Lamprecht
- Department of Pharmaceutics, University of Bonn, Bonn, Germany
- FDE EA4267University of Burgundy, Besançon, France
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Perry T, Laffin M, Fedorak RN, Thiesen A, Dicken B, Madsen KL. Ileocolic resection is associated with increased susceptibility to injury in a murine model of colitis. PLoS One 2017; 12:e0184660. [PMID: 28922370 PMCID: PMC5603159 DOI: 10.1371/journal.pone.0184660] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Accepted: 08/28/2017] [Indexed: 12/28/2022] Open
Abstract
Ileocolic resection (ICR) is the most common intestinal resection performed for Crohn's disease, with recurrences commonly occurring at the site of the anastomosis. This study used an animal model of ICR in wild-type mice to examine immunologic changes that developed around the surgical anastomosis and how these changes impacted gut responses to minor acute injury. ICR was performed in adult 129S1/SvlmJ mice and results compared with mice receiving sham or no surgery. Dextran sodium sulfate was given either on post-operative day 9 or day 24 to evaluate immune responses in the intestine both immediately following surgery and after a period of healing. Fecal occult blood measurements and animal weights were taken daily. Cytokine levels were measured in ileal and colonic tissue. Bacterial load in the neo-terminal ileum was measured using qPCR. Immune cell populations in the intestinal tissue, mesenteric lymph nodes, and spleen were assessed using flow cytometry. Cytokine secretion in response to microbial products was measured in isolated mesenteric lymph nodes and spleen cells. ICR resulted in an initial elevation of inflammatory markers in the terminal ileum and colon followed by enhanced levels of bacterial growth in the neo-terminal ileum. Intestinal surgical resection resulted in the recruitment of innate immune cells into the colon that exhibited a non-responsiveness to microbial stimuli. DSS colitis phenotype was more severe in the ileocolic resection groups and this was associated with local and systemic immunosuppression as evidenced by a reduced cytokine responses to microbial stimuli. This study reveals the development of an immune non-responsiveness to microbial products following ileocolic resection that is associated with enhanced levels of bacterial growth in the neo-terminal ileum. These surgical-induced altered immune-microbial interactions in the intestine may contribute to disease recurrence at the surgical anastomosis site following ileocolic resections in patients with Crohn's disease.
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Affiliation(s)
- Troy Perry
- Department of Surgery, University of Alberta, Edmonton, Alberta, Canada
| | - Michael Laffin
- Department of Surgery, University of Alberta, Edmonton, Alberta, Canada
| | - Richard N. Fedorak
- Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
- The Centre of Excellence for Gastrointestinal Inflammation and Immunity Research (CEGIIR), University of Alberta, Edmonton, Alberta, Canada
| | - Aducio Thiesen
- Department of Laboratory Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Bryan Dicken
- Department of Surgery, University of Alberta, Edmonton, Alberta, Canada
| | - Karen L. Madsen
- Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
- The Centre of Excellence for Gastrointestinal Inflammation and Immunity Research (CEGIIR), University of Alberta, Edmonton, Alberta, Canada
- * E-mail:
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38
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Park HJ, Lee SW, Kwon DJ, Heo SI, Park SH, Kim SY, Hong S. Oral administration of taheebo (Tabebuia avellanedae Lorentz ex Griseb.) water extract prevents DSS-induced colitis in mice by up-regulating type II T helper immune responses. Altern Ther Health Med 2017; 17:448. [PMID: 28877696 PMCID: PMC5585948 DOI: 10.1186/s12906-017-1952-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 08/30/2017] [Indexed: 02/07/2023]
Abstract
Background Inflammatory bowel diseases (IBDs) are chronic inflammatory disorders that are mediated by pathogenic Th1 and Th17 cells. Previous studies have demonstrated that taheebo water extract (TWE) derived from Tabebuia avellanedae Lorentz ex Griseb., as folk remedy, has been used to treat various inflammatory diseases. Although TWE has been previously shown to display anti-inflammatory activities, the in vivo effects of TWE on mucosal immune responses remain unclear. Methods We examined the anti-inflammatory effects of TWE on innate immune cells such as dendritic cells (DCs) and macrophages and also on the differentiation of T helper cells. Lastly, adopting a method for dextran sulfate sodium (DSS)-induced colitis, we investigated whether the oral administration of TWE can modulate mucosal inflammatory responses. Results We found that TWE could activate DCs to produce immunosuppressive IL10 and polarize macrophages toward an anti-inflammatory phenotype in the mesenteric lymph node (MLN). Such alterations in DCs and macrophages resulted in a significant increase in anti-inflammatory Th2 and Foxp3+ Treg cells and a dramatic decrease in pro-inflammatory Th1 and Th17 cells in the MLN. Upon induction of colitis with DSS treatment, TWE significantly reduced the clinical symptoms, including body weight loss and colonic tissue inflammation, by up-regulating type II T helper immune responses. Conclusions Taken together, these data suggest that TWE is an excellent natural product with therapeutic effects to help improve inflammatory disorders such as colitis.
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39
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Rabbi MF, Eissa N, Munyaka PM, Kermarrec L, Elgazzar O, Khafipour E, Bernstein CN, Ghia JE. Reactivation of Intestinal Inflammation Is Suppressed by Catestatin in a Murine Model of Colitis via M1 Macrophages and Not the Gut Microbiota. Front Immunol 2017; 8:985. [PMID: 28871257 PMCID: PMC5566981 DOI: 10.3389/fimmu.2017.00985] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Accepted: 08/02/2017] [Indexed: 12/22/2022] Open
Abstract
While there is growing awareness of a relationship between chromogranin-A (CHGA) and susceptibility to inflammatory conditions, the role of human catestatin [(hCTS); CHGA352–67] in the natural history of established inflammatory bowel disease is not known. Recently, using two different experimental models, we demonstrated that hCTS-treated mice develop less severe acute colitis. We have also shown the implication of the macrophages in this effect. The aims of this study were to determine (1) whether hCTS treatment could attenuate the reactivation of inflammation in adult mice with previously established chronic colitis; (2) whether this effect is mediated through macrophages or the gut microbiota. Quiescent colitis was induced in 7–8-week-old C57BL6 mice using four cycles (2–4%) of dextran sulfate sodium. hCTS (1.5 mg/kg/day) treatment or vehicle started 2 days before the last induction of colitis and continuing for 7 days. At sacrifice, macro- and microscopic scores were determined. Colonic pro-inflammatory cytokines [interleukin (IL)-6, IL-1β, and TNF- α], anti-inflammatory cytokines (IL-10, TGF- β), classically activated (M1) (iNOS, Mcp1), and alternatively activated (M2) (Ym1, Arg1) macrophages markers were studied using ELISA and/or RT-qPCR. In vitro, peritoneal macrophages isolated from naïve mice and treated with hCTS (10−5 M, 12 h) were exposed to either lipopolysaccharide (100 ng/ml, 12 h) to polarize M1 macrophages or to IL-4/IL-13 (20 ng/ml) to polarize M2 macrophages. M1/M2 macrophage markers along with cytokine gene expression were determined using RT-qPCR. Feces and mucosa-associated microbiota (MAM) samples were collected, and the V4 region of 16 s rRNA was sequenced. Micro- and macroscopic scores, colonic IL-6, IL-1β, TNF- α, and M1 macrophages markers were significantly decreased in the hCTS-treated group. Treatment did not have any effect on colonic IL-10, TGF-β, and M2 markers nor modified the bacterial richness, diversity, or the major phyla in colitic fecal and MAM samples. In vitro, pro-inflammatory cytokines levels, as well as their gene expression, were significantly reduced in hCTS-treated M1 macrophages. hCTS treatment did not affect M2 macrophage markers. These findings suggest that hCTS treatment attenuates the severity of inflammatory relapse through the modulation of the M1 macrophages and the release of pro-inflammatory cytokines.
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Affiliation(s)
- Mohammad F Rabbi
- Department of Immunology, University of Manitoba, Winnipeg, MB, Canada.,The Children Research Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, MB, Canada
| | - Nour Eissa
- Department of Immunology, University of Manitoba, Winnipeg, MB, Canada.,The Children Research Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, MB, Canada
| | - Peris M Munyaka
- Department of Animal Sciences, University of Manitoba, Winnipeg, MB, Canada
| | | | - Omar Elgazzar
- Department of Immunology, University of Manitoba, Winnipeg, MB, Canada
| | - Ehsan Khafipour
- Department of Animal Sciences, University of Manitoba, Winnipeg, MB, Canada.,Department of Medical Microbiology, University of Manitoba, Winnipeg, MB, Canada
| | - Charles N Bernstein
- Department of Internal Medicine, Section of Gastroenterology, University of Manitoba, Winnipeg, MB, Canada.,Inflammatory Bowel Disease Clinical and Research Centre, University of Manitoba, Winnipeg, MB, Canada
| | - Jean Eric Ghia
- Department of Immunology, University of Manitoba, Winnipeg, MB, Canada.,The Children Research Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, MB, Canada.,Department of Internal Medicine, Section of Gastroenterology, University of Manitoba, Winnipeg, MB, Canada.,Inflammatory Bowel Disease Clinical and Research Centre, University of Manitoba, Winnipeg, MB, Canada
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40
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Yang Y, Zhou Y, Hu J, Luo F, Xie Y, Shen Y, Bian W, Yin Z, Li H, Zhang X. Ficolin-A/2, acting as a new regulator of macrophage polarization, mediates the inflammatory response in experimental mouse colitis. Immunology 2017; 151:433-450. [PMID: 28380665 PMCID: PMC5506452 DOI: 10.1111/imm.12741] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 02/28/2017] [Accepted: 03/27/2017] [Indexed: 12/19/2022] Open
Abstract
Human ficolin-2 (FCN-2) and mouse ficolin-A (FCN-A, a ficolin-2-like molecule in mouse) are activators of the lectin complement pathway, present in normal plasma and usually associated with infectious diseases, but little is known about the role of FCN-A/2 in inflammatory bowel disease (IBD). In our present study, we found that patients with IBD exhibited much higher serum FCN-2 levels than healthy controls. In the dextran sulphate sodium-induced acute colitis mouse model, FCN-A knockout mice showed much milder disease symptoms with less histological damage, lower expression levels of pro-inflammatory cytokines [interleukin-6 (IL-6), IL-1β and tumour necrosis factor-α (TNF-α)], chemokines (CXCL1/2/10 and CCL4) and higher levels of the anti-inflammatory cytokine IL-10 compared with wild-type mice. We demonstrated that FCN-A/2 exacerbated the inflammatory pathogenesis of IBD by stimulating M1 polarization through the TLR4/MyD88/MAPK/NF-κB signalling pathway in macrophages. Hence, our data suggest that FCN-A/2 may be used as a novel therapeutic target for IBD.
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Affiliation(s)
- Yi‐Fei Yang
- State Key Laboratory of Virology and Medical Research InstituteHubei Province Key Laboratory of Allergy and Immunology and Department of ImmunologyWuhan University School of Basic Medical SciencesWuhanChina
| | - Yi‐Dan Zhou
- Department of MicrobiologySchool of Molecular and Cellular BiologyUniversity of Illinois at Urbana‐ChampaignChampaignILUSA
| | - Jia‐Chen Hu
- Department of Gastroenterology/HepatologyZhongnan HospitalWuhan University School of MedicineWuhanChina
| | - Feng‐Ling Luo
- State Key Laboratory of Virology and Medical Research InstituteHubei Province Key Laboratory of Allergy and Immunology and Department of ImmunologyWuhan University School of Basic Medical SciencesWuhanChina
| | - Yan Xie
- State Key Laboratory of Virology and Medical Research InstituteHubei Province Key Laboratory of Allergy and Immunology and Department of ImmunologyWuhan University School of Basic Medical SciencesWuhanChina
| | - Yan‐Ying Shen
- State Key Laboratory of Virology and Medical Research InstituteHubei Province Key Laboratory of Allergy and Immunology and Department of ImmunologyWuhan University School of Basic Medical SciencesWuhanChina
| | - Wen‐Xiu Bian
- State Key Laboratory of Virology and Medical Research InstituteHubei Province Key Laboratory of Allergy and Immunology and Department of ImmunologyWuhan University School of Basic Medical SciencesWuhanChina
| | - Zhi‐Nan Yin
- Biomedical Translational Research InstituteJinan UniversityGuangzhouGuangdongChina
| | - Hong‐Liang Li
- State Key Laboratory of Virology and Medical Research InstituteHubei Province Key Laboratory of Allergy and Immunology and Department of ImmunologyWuhan University School of Basic Medical SciencesWuhanChina
| | - Xiao‐Lian Zhang
- State Key Laboratory of Virology and Medical Research InstituteHubei Province Key Laboratory of Allergy and Immunology and Department of ImmunologyWuhan University School of Basic Medical SciencesWuhanChina
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41
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Van Welden S, De Vos M, Wielockx B, Tavernier SJ, Dullaers M, Neyt S, Descamps B, Devisscher L, Devriese S, Van den Bossche L, Holvoet T, Baeyens A, Correale C, D'Alessio S, Vanhove C, De Vos F, Verhasselt B, Breier G, Lambrecht BN, Janssens S, Carmeliet P, Danese S, Elewaut D, Laukens D, Hindryckx P. Haematopoietic prolyl hydroxylase-1 deficiency promotes M2 macrophage polarization and is both necessary and sufficient to protect against experimental colitis. J Pathol 2017; 241:547-558. [PMID: 27981571 DOI: 10.1002/path.4861] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2016] [Revised: 11/21/2016] [Accepted: 12/06/2016] [Indexed: 12/17/2022]
Abstract
Prolyl hydroxylase domain-containing proteins (PHDs) regulate the adaptation of cells to hypoxia. Pan-hydroxylase inhibition is protective in experimental colitis, in which PHD1 plays a prominent role. However, it is currently unknown how PHD1 targeting regulates this protection and which cell type(s) are involved. Here, we demonstrated that Phd1 deletion in endothelial and haematopoietic cells (Phd1f/f Tie2:cre) protected mice from dextran sulphate sodium (DSS)-induced colitis, with reduced epithelial erosions, immune cell infiltration, and colonic microvascular dysfunction, whereas the response of Phd2f/+ Tie2:cre and Phd3f/f Tie2:cre mice to DSS was similar to that of their littermate controls. Using bone marrow chimeras and cell-specific cre mice, we demonstrated that ablation of Phd1 in haematopoietic cells but not in endothelial cells was both necessary and sufficient to inhibit experimental colitis. This effect relied, at least in part, on skewing of Phd1-deficient bone marrow-derived macrophages towards an anti-inflammatory M2 phenotype. These cells showed an attenuated nuclear factor-κB-dependent response to lipopolysaccharide (LPS), which in turn diminished endothelial chemokine expression. In addition, Phd1 deficiency in dendritic cells significantly reduced interleukin-1β production in response to LPS. Taken together, our results further support the development of selective PHD1 inhibitors for ulcerative colitis, and identify haematopoietic cells as their primary target. Copyright © 2016 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
| | - Martine De Vos
- Department of Gastroenterology, Ghent University, Ghent, Belgium
| | - Ben Wielockx
- Heisenberg Research Group, Department of Clinical Pathobiochemistry, Institute for Clinical Chemistry and Laboratory Medicine, Technische Universität Dresden, Dresden, Germany
| | - Simon J Tavernier
- Department of Internal Medicine, Ghent University, Ghent, Belgium.,Inflammation Research Centre VIB, Zwijnaarde, Belgium
| | - Melissa Dullaers
- Inflammation Research Centre VIB, Zwijnaarde, Belgium.,Department of Pulmonary Medicine, Ghent University, Ghent, Belgium
| | - Sara Neyt
- Laboratory of Radiopharmacy, Ghent University, Ghent, Belgium
| | - Benedicte Descamps
- Infinity Imaging Laboratory (iMinds Medical IT-IBiTech-MEDISIP), Ghent University, Ghent, Belgium
| | | | - Sarah Devriese
- Department of Gastroenterology, Ghent University, Ghent, Belgium
| | | | - Tom Holvoet
- Department of Gastroenterology, Ghent University, Ghent, Belgium
| | - Ann Baeyens
- Department of Clinical Chemistry, Microbiology, and Immunology, Ghent University, Ghent, Belgium
| | - Carmen Correale
- IBD Centre, Department of Gastroenterology, Humanitas Clinical and Research Centre, Rozzano, Italy
| | - Silvia D'Alessio
- IBD Centre, Department of Gastroenterology, Humanitas Clinical and Research Centre, Rozzano, Italy
| | - Christian Vanhove
- Infinity Imaging Laboratory (iMinds Medical IT-IBiTech-MEDISIP), Ghent University, Ghent, Belgium
| | - Filip De Vos
- Laboratory of Radiopharmacy, Ghent University, Ghent, Belgium
| | - Bruno Verhasselt
- Department of Clinical Chemistry, Microbiology, and Immunology, Ghent University, Ghent, Belgium
| | - Georg Breier
- Division of Medical Biology, Department of Psychiatry, Technische Universität Dresden, Dresden, Germany
| | - Bart N Lambrecht
- Department of Internal Medicine, Ghent University, Ghent, Belgium.,Inflammation Research Centre VIB, Zwijnaarde, Belgium
| | - Sophie Janssens
- Department of Internal Medicine, Ghent University, Ghent, Belgium.,Inflammation Research Centre VIB, Zwijnaarde, Belgium
| | - Peter Carmeliet
- Laboratory of Angiogenesis and Vascular metabolism, Vesalius Research Centre, KU Leuven, VIB, Leuven, Belgium
| | - Silvio Danese
- IBD Centre, Department of Gastroenterology, Humanitas Clinical and Research Centre, Rozzano, Italy
| | - Dirk Elewaut
- Inflammation Research Centre VIB, Zwijnaarde, Belgium.,Department of Rheumatology, Ghent University, Ghent, Belgium
| | - Debby Laukens
- Department of Gastroenterology, Ghent University, Ghent, Belgium
| | - Pieter Hindryckx
- Department of Gastroenterology, Ghent University, Ghent, Belgium
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Guttman O, Freixo-Lima GS, Kaner Z, Lior Y, Rider P, Lewis EC. Context-Specific and Immune Cell-Dependent Antitumor Activities of α1-Antitrypsin. Front Immunol 2016; 7:559. [PMID: 28003813 PMCID: PMC5141363 DOI: 10.3389/fimmu.2016.00559] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 11/21/2016] [Indexed: 12/31/2022] Open
Abstract
α1-antitrypsin (AAT), a circulating glycoprotein that rises during acute phase responses and healthy pregnancies, exhibits immunomodulatory properties in several T-cell-dependent immune pathologies. However, AAT does not directly interfere with T-cell responses; instead, it facilitates polarization of macrophages and dendritic cells towards M2-like and tolerogenic cells, respectively. AAT also allows NK cell responses against tumor cells, while attenuating DC-dependent induction of autoimmune NK cell activities. Since AAT-treated macrophages bear resemblance to cancer-promoting tumor-associated macrophages (TAMs), it became imperative to examine the possible induction of tumor permissive conditions by AAT. Here, AAT treatment is examined for its effect on tumor development, metastatic spread, and tumor immunology. Systemic AAT treatment of mice inoculated with B16-F10 melanoma cells resulted in significant inhibition of tumor growth and metastatic spread. Using NK cell-resistant RMA cells, we show that AAT interferes with tumor development in a CD8+ T-cell-dependent manner. Unexpectedly, upon analysis of tumor cellular composition, we identified functional tumor-infiltrating CD8+ T-cells alongside M1-like TAMs in AAT-treated mice. Based on the ability of AAT to undergo chemical modifications, we emulated conditions of elevated reactive nitrogen and oxygen species. Indeed, macrophages were stimulated by treatment with nitrosylated AAT, and IFNγ transcripts were significantly elevated in tumors extracted soon after ischemia-reperfusion challenge. These context-specific changes may explain the differential effects of AAT on immune responses towards tumor cells versus benign antigenic targets. These data suggest that systemically elevated levels of AAT may accommodate its physiological function in inflammatory resolution, without compromising tumor-targeting immune responses.
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Affiliation(s)
- Ofer Guttman
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev , Beer-Sheva , Israel
| | - Gabriella S Freixo-Lima
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev , Beer-Sheva , Israel
| | - Ziv Kaner
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev , Beer-Sheva , Israel
| | - Yotam Lior
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev , Beer-Sheva , Israel
| | - Peleg Rider
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev , Beer-Sheva , Israel
| | - Eli C Lewis
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev , Beer-Sheva , Israel
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Jiang X, Zhou T, Xiao Y, Yu J, Dou S, Chen G, Wang R, Xiao H, Hou C, Wang W, Shi Q, Feng J, Ma Y, Shen B, Li Y, Han G. Tim-3 promotes tumor-promoting M2 macrophage polarization by binding to STAT1 and suppressing the STAT1-miR-155 signaling axis. Oncoimmunology 2016; 5:e1211219. [PMID: 27757304 DOI: 10.1080/2162402x.2016.1211219] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 06/23/2016] [Accepted: 07/04/2016] [Indexed: 12/13/2022] Open
Abstract
T cell Ig mucin-3 (Tim-3), an immune checkpoint inhibitor, shows therapeutic potential. However, the molecular mechanism by which Tim-3 regulates immune responses remains to be determined. In particular, very little is known about how Tim-3 works in innate immune cells. Here, we demonstrated that Tim-3 is involved in the development of tumor-promoting M2 macrophages in colon cancer. Manipulation of the Tim-3 pathway significantly affected the polarization status of intestinal macrophages and the progression of colon cancer. The Tim-3 signaling pathway in macrophages was explored using microarray, co-immunoprecipitation, gene mutation, and high-content analysis. For the first time, we demonstrated that Tim-3 polarizes macrophages by directly binding to STAT1 via residue Y256 and Y263 in its intracellular tail and inhibiting the STAT1-miR-155-SOCS1 signaling axis. We also identified a new signaling adaptor of Tim-3 in macrophages, and, by modulating the Tim-3 pathway, demonstrated the feasibility of altering macrophage polarization as a potential tool for treating this kind of disease.
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Affiliation(s)
- Xingwei Jiang
- Department of Immunology, Institute of Basic Medical Sciences, Beijing, China; Beijing Institute of Transfusion Medicine, Beijing, China
| | - Tingting Zhou
- Department of Immunology, Institute of Basic Medical Sciences , Beijing, China
| | - Yan Xiao
- Department of Respiratory Diseases, First Affiliated Hospital of the Chinese PLA General Hospital , Beijing, China
| | - Jiahui Yu
- The Population and Family Planning Cadres College of Henan Province , Zhengzhou, China
| | - Shuaijie Dou
- Department of Immunology, Institute of Basic Medical Sciences , Beijing, China
| | - Guojiang Chen
- Department of Immunology, Institute of Basic Medical Sciences , Beijing, China
| | - Renxi Wang
- Department of Immunology, Institute of Basic Medical Sciences , Beijing, China
| | - He Xiao
- Department of Immunology, Institute of Basic Medical Sciences , Beijing, China
| | - Chunmei Hou
- Department of Immunology, Institute of Basic Medical Sciences , Beijing, China
| | - Wei Wang
- Department of Immunology, Institute of Basic Medical Sciences, Beijing, China; The Population and Family Planning Cadres College of Henan Province, Zhengzhou, China
| | - Qingzhu Shi
- Department of Immunology, Institute of Basic Medical Sciences , Beijing, China
| | - Jiannan Feng
- Department of Immunology, Institute of Basic Medical Sciences , Beijing, China
| | - Yuanfang Ma
- Institute of Immunology, Medical School of Henan University , Kaifeng, China
| | - Beifen Shen
- Department of Immunology, Institute of Basic Medical Sciences , Beijing, China
| | - Yan Li
- Department of Immunology, Institute of Basic Medical Sciences , Beijing, China
| | - Gencheng Han
- Department of Immunology, Institute of Basic Medical Sciences , Beijing, China
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44
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Fernando MR, Saxena A, Reyes JL, McKay DM. Butyrate enhances antibacterial effects while suppressing other features of alternative activation in IL-4-induced macrophages. Am J Physiol Gastrointest Liver Physiol 2016; 310:G822-31. [PMID: 27012776 DOI: 10.1152/ajpgi.00440.2015] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 03/11/2016] [Indexed: 01/31/2023]
Abstract
The short-chain fatty acid butyrate is produced by fermentation of dietary fiber by the intestinal microbiota; butyrate is the primary energy source of colonocytes and has immunomodulatory effects. Having shown that macrophages differentiated with IL-4 [M(IL-4)s] can suppress colitis, we hypothesized that butyrate would reinforce an M(IL-4) phenotype. Here, we show that in the presence of butyrate M(IL-4)s display reduced expression of their hallmark markers Arg1 and Ym1 and significantly suppressed LPS-induced nitric oxide, IL-12p40, and IL-10 production. Butyrate treatment likely altered the M(IL-4) phenotype via inhibition of histone deacetylation. Functionally, M(IL-4)s treated with butyrate showed increased phagocytosis and killing of bacteria, compared with M(IL-4) and this was not accompanied by enhanced proinflammatory cytokine production. Culture of regulatory T cells with M(IL-4)s and M(IL-4 + butyrate)s revealed that both macrophage subsets suppressed expression of the regulatory T-cell marker Foxp3. However, Tregs cocultured with M(IL-4 + butyrate) produced less IL-17A than Tregs cocultured with M(IL-4). These data illustrate the importance of butyrate, a microbial-derived metabolite, in the regulation of gut immunity: the demonstration that butyrate promotes phagocytosis in M(IL-4)s that can limit T-cell production of IL-17A reveals novel aspects of bacterial-host interaction in the regulation of intestinal homeostasis.
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Affiliation(s)
- Maria R Fernando
- Gastrointestinal Research Group and Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Joan and Phoebe Snyder Institute for Chronic Disease, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Alpana Saxena
- Gastrointestinal Research Group and Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Joan and Phoebe Snyder Institute for Chronic Disease, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - José-Luis Reyes
- Gastrointestinal Research Group and Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Joan and Phoebe Snyder Institute for Chronic Disease, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Derek M McKay
- Gastrointestinal Research Group and Inflammation Research Network, Department of Physiology and Pharmacology, Calvin, Joan and Phoebe Snyder Institute for Chronic Disease, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
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45
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Steinfelder S, O’Regan NL, Hartmann S. Diplomatic Assistance: Can Helminth-Modulated Macrophages Act as Treatment for Inflammatory Disease? PLoS Pathog 2016; 12:e1005480. [PMID: 27101372 PMCID: PMC4839649 DOI: 10.1371/journal.ppat.1005480] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Helminths have evolved numerous pathways to prevent their expulsion or elimination from the host to ensure long-term survival. During infection, they target numerous host cells, including macrophages, to induce an alternatively activated phenotype, which aids elimination of infection, tissue repair, and wound healing. Multiple animal-based studies have demonstrated a significant reduction or complete reversal of disease by helminth infection, treatment with helminth products, or helminth-modulated macrophages in models of allergy, autoimmunity, and sepsis. Experimental studies of macrophage and helminth therapies are being translated into clinical benefits for patients undergoing transplantation and those with multiple sclerosis. Thus, helminths or helminth-modulated macrophages present great possibilities as therapeutic applications for inflammatory diseases in humans. Macrophage-based helminth therapies and the underlying mechanisms of their therapeutic or curative effects represent an under-researched area with the potential to open new avenues of treatment. This review explores the application of helminth-modulated macrophages as a new therapy for inflammatory diseases.
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Affiliation(s)
- Svenja Steinfelder
- Department of Veterinary Medicine, Institute of Immunology, Freie Universität Berlin, Berlin, Germany
| | - Noëlle Louise O’Regan
- Department of Veterinary Medicine, Institute of Immunology, Freie Universität Berlin, Berlin, Germany
| | - Susanne Hartmann
- Department of Veterinary Medicine, Institute of Immunology, Freie Universität Berlin, Berlin, Germany
- * E-mail:
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46
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Ji J, Shu D, Zheng M, Wang J, Luo C, Wang Y, Guo F, Zou X, Lv X, Li Y, Liu T, Qu H. Microbial metabolite butyrate facilitates M2 macrophage polarization and function. Sci Rep 2016; 6:24838. [PMID: 27094081 PMCID: PMC4837405 DOI: 10.1038/srep24838] [Citation(s) in RCA: 210] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 04/05/2016] [Indexed: 01/09/2023] Open
Abstract
Metabolites from intestinal microbes modulate the mucosal immune system by regulating the polarization and expansion of T cells. Whether the microbial metabolites influence macrophage polarization, however, is poorly understood. Here, we show that the large bowel microbial fermentation product, butyrate, facilitates M2 macrophage polarization, in vitro and in vivo. The supernatant from butyrate-treated M2 macrophage increased the migration and enhanced the wound closure rate of MLE-12 cells. Butyrate attenuated intestinal inflammation in mice with dextran sulfate sodium (DSS)-induced colitis, with a significant increase in colonic expression of the M2 macrophage-associated protein, Arg1. M2 macrophage treated with butyrate, had increased activation of the H3K9/STAT6 signaling pathway, suggesting a mechanism for butyrate facilitated M2 macrophage polarization. Collectively, our study indicated that commensal microbe-derived butyrate is a novel activator of STAT6-mediated transcription through H3K9 acetylation driving M2 macrophage polarization, and delineated new insights into the immune interplay underlying inflammatory bowel disease.
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Affiliation(s)
- Jian Ji
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, 1 Dafeng 1st Street, Wushan, Tianhe District, Guangzhou 510640, China.,State Key Laboratory of Livestock and Poultry Breeding, Guangzhou 510640, China
| | - Dingming Shu
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, 1 Dafeng 1st Street, Wushan, Tianhe District, Guangzhou 510640, China.,State Key Laboratory of Livestock and Poultry Breeding, Guangzhou 510640, China
| | - Mingzhu Zheng
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou, China
| | - Jie Wang
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, 1 Dafeng 1st Street, Wushan, Tianhe District, Guangzhou 510640, China.,State Key Laboratory of Livestock and Poultry Breeding, Guangzhou 510640, China
| | - Chenglong Luo
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, 1 Dafeng 1st Street, Wushan, Tianhe District, Guangzhou 510640, China.,State Key Laboratory of Livestock and Poultry Breeding, Guangzhou 510640, China
| | - Yan Wang
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, 1 Dafeng 1st Street, Wushan, Tianhe District, Guangzhou 510640, China.,State Key Laboratory of Livestock and Poultry Breeding, Guangzhou 510640, China
| | - Fuyou Guo
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, 1 Dafeng 1st Street, Wushan, Tianhe District, Guangzhou 510640, China.,State Key Laboratory of Livestock and Poultry Breeding, Guangzhou 510640, China
| | - Xian Zou
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, 1 Dafeng 1st Street, Wushan, Tianhe District, Guangzhou 510640, China.,State Key Laboratory of Livestock and Poultry Breeding, Guangzhou 510640, China
| | - Xiaohui Lv
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, 1 Dafeng 1st Street, Wushan, Tianhe District, Guangzhou 510640, China.,State Key Laboratory of Livestock and Poultry Breeding, Guangzhou 510640, China
| | - Ying Li
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, 1 Dafeng 1st Street, Wushan, Tianhe District, Guangzhou 510640, China.,State Key Laboratory of Livestock and Poultry Breeding, Guangzhou 510640, China
| | - Tianfei Liu
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, 1 Dafeng 1st Street, Wushan, Tianhe District, Guangzhou 510640, China.,State Key Laboratory of Livestock and Poultry Breeding, Guangzhou 510640, China
| | - Hao Qu
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, 1 Dafeng 1st Street, Wushan, Tianhe District, Guangzhou 510640, China.,State Key Laboratory of Livestock and Poultry Breeding, Guangzhou 510640, China
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47
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Shinzaki S, Ishii M, Fujii H, Iijima H, Wakamatsu K, Kawai S, Shiraishi E, Hiyama S, Inoue T, Hayashi Y, Kuwahara R, Takamatsu S, Kamada Y, Morii E, Tsujii M, Takehara T, Miyoshi E. N-Acetylglucosaminyltransferase V exacerbates murine colitis with macrophage dysfunction and enhances colitic tumorigenesis. J Gastroenterol 2016; 51:357-69. [PMID: 26349931 DOI: 10.1007/s00535-015-1119-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Accepted: 08/20/2015] [Indexed: 02/04/2023]
Abstract
BACKGROUND Oligosaccharide structures and their alterations have important roles in modulating intestinal inflammation. N-Acetylglucosaminyltransferase V (GnT-V) is involved in the biosynthesis of N-acetylglucosamine (GlcNAc) by β1,6-branching on N-glycans and is induced in various pathologic processes, such as inflammation and regeneration. GnT-V alters host immune responses by inhibiting the functions of CD4(+) T cells and macrophages. The present study aimed to clarify the role of GnT-V in intestinal inflammation using GnT-V transgenic mice. METHODS Colitis severity was compared between GnT-V transgenic mice and wild-type mice. β1,6-GlcNAc levels were investigated by phytohemagglutinin-L4 lectin blotting and flow cytometry. We investigated phagocytosis of macrophages by measuring the number of peritoneal-macrophage-ingested fluorescent latex beads by flow cytometry. Cytokine production in the culture supernatant of mononuclear cells from the spleen, mesenteric lymph nodes, and bone-marrow-derived macrophages was determined by enzyme-linked immunosorbent assay. Clodronate liposomes were intravenously injected to deplete macrophages in vivo. Chronic-colitis-associated tumorigenesis was assessed after 9 months of repeated administration of dextran sodium sulfate (DSS). RESULTS DSS-induced colitis and colitis induced by trinitrobenzene sulfonic acid were markedly exacerbated in GnT-V transgenic mice compared with wild-type mice. Production of interleukin-10 and phagocytosis of macrophages were significantly impaired in GnT-V transgenic mice compared with wild-type mice. Clodronate liposome treatment to deplete macrophages blocked the exacerbation of DSS-induced colitis and impairment of interleukin-10 production in GnT-V transgenic mice. Chronic-colitis-associated tumorigenesis was significantly increased in GnT-V transgenic mice. CONCLUSIONS Overexpression of GnT-V exacerbated murine experimental colitis by inducing macrophage dysfunction, thereby enhancing colorectal tumorigenesis.
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Affiliation(s)
- Shinichiro Shinzaki
- Department of Gastroenterology and Hepatology, Osaka University Graduate School of Medicine, 2-2 K1, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Mayuko Ishii
- Department of Molecular Biochemistry and Clinical Investigation, Osaka University Graduate School of Medicine, 1-7, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Hironobu Fujii
- Department of Molecular Biochemistry and Clinical Investigation, Osaka University Graduate School of Medicine, 1-7, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Hideki Iijima
- Department of Gastroenterology and Hepatology, Osaka University Graduate School of Medicine, 2-2 K1, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Kana Wakamatsu
- Department of Molecular Biochemistry and Clinical Investigation, Osaka University Graduate School of Medicine, 1-7, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Shoichiro Kawai
- Department of Gastroenterology and Hepatology, Osaka University Graduate School of Medicine, 2-2 K1, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Eri Shiraishi
- Department of Gastroenterology and Hepatology, Osaka University Graduate School of Medicine, 2-2 K1, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Satoshi Hiyama
- Department of Gastroenterology and Hepatology, Osaka University Graduate School of Medicine, 2-2 K1, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Takahiro Inoue
- Department of Gastroenterology and Hepatology, Osaka University Graduate School of Medicine, 2-2 K1, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Yoshito Hayashi
- Department of Gastroenterology and Hepatology, Osaka University Graduate School of Medicine, 2-2 K1, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Ryusuke Kuwahara
- Research Center for Ultra-High Voltage Electron Microscopy, Osaka University, 7-1, Mihogaoka, Ibaraki, Osaka, 567-0047, Japan
| | - Shinji Takamatsu
- Department of Molecular Biochemistry and Clinical Investigation, Osaka University Graduate School of Medicine, 1-7, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Yoshihiro Kamada
- Department of Gastroenterology and Hepatology, Osaka University Graduate School of Medicine, 2-2 K1, Yamadaoka, Suita, Osaka, 565-0871, Japan.,Department of Molecular Biochemistry and Clinical Investigation, Osaka University Graduate School of Medicine, 1-7, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Eiichi Morii
- Department of Pathology, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Masahiko Tsujii
- Department of Gastroenterology and Hepatology, Osaka University Graduate School of Medicine, 2-2 K1, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Tetsuo Takehara
- Department of Gastroenterology and Hepatology, Osaka University Graduate School of Medicine, 2-2 K1, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Eiji Miyoshi
- Department of Molecular Biochemistry and Clinical Investigation, Osaka University Graduate School of Medicine, 1-7, Yamadaoka, Suita, Osaka, 565-0871, Japan.
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48
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Sorting nexin 10 acting as a novel regulator of macrophage polarization mediates inflammatory response in experimental mouse colitis. Sci Rep 2016; 6:20630. [PMID: 26856241 PMCID: PMC4746623 DOI: 10.1038/srep20630] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Accepted: 01/06/2016] [Indexed: 02/07/2023] Open
Abstract
In response to changes in microenvironment, macrophages polarize into functionally distinct phenotypes, playing a crucial role in the pathogenesis of inflammatory bowel disease (IBD). Here, we investigated the effects of sorting nexin 10 (SNX10), a protein involved in endosomal trafficking and osteoclast maturation, on regulation of macrophage polarization and progression of mouse colitis. Our results revealed that SNX10 deficiency increased the population of M2-type monocytes/macrophages, and protected against colonic inflammation and pathological damage induced by dextran sulfate sodium (DSS). By in vitro study, we showed that deficiency of SNX10 polarized macrophages derived from mouse bone marrow or human peripheral blood mononuclear cells (PBMCs) towards an anti-inflammatory M2 phenotype, which partially reversed by SNX10 plasmid transfection. Adoptive transfer of SNX10−/− macrophages ameliorated colitis in WT mice. However, transfer of WT macrophages exacerbated colitis in SNX10−/− mice. Our data disclose a crucial role and novel function for SNX10 in macrophage polarization. Loss of SNX10 function may be a potential promising therapeutic strategy for IBD.
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49
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Ngoh EN, Weisser SB, Lo Y, Kozicky LK, Jen R, Brugger HK, Menzies SC, McLarren KW, Nackiewicz D, van Rooijen N, Jacobson K, Ehses JA, Turvey SE, Sly LM. Activity of SHIP, Which Prevents Expression of Interleukin 1β, Is Reduced in Patients With Crohn's Disease. Gastroenterology 2016; 150:465-76. [PMID: 26481854 DOI: 10.1053/j.gastro.2015.09.049] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Revised: 09/08/2015] [Accepted: 09/29/2015] [Indexed: 12/16/2022]
Abstract
BACKGROUND & AIMS Crohn's disease (CD) is associated with a dysregulated immune response to commensal micro-organisms in the intestine. Mice deficient in inositol polyphosphate 5'-phosphatase D (INPP5D, also known as SHIP) develop intestinal inflammation resembling that of patients with CD. SHIP is a negative regulator of PI3Kp110α activity. We investigated mechanisms of intestinal inflammation in Inpp5d(-/-) mice (SHIP-null mice), and SHIP levels and activity in intestinal tissues of subjects with CD. METHODS We collected intestines from SHIP-null mice, as well as Inpp5d(+/+) mice (controls), and measured levels of cytokines of the interleukin 1 (IL1) family (IL1α, IL1β, IL1ra, and IL6) by enzyme-linked immunosorbent assay. Macrophages were isolated from lamina propria cells of mice, IL1β production was measured, and mechanisms of increased IL1β production were investigated. Macrophages were incubated with pan-phosphatidylinositol 3-kinase inhibitors or PI3Kp110α-specific inhibitors. Some mice were given an antagonist of the IL1 receptor; macrophages were depleted from ilea of mice using clodronate-containing liposomes. We obtained ileal biopsies from sites of inflammation and peripheral blood mononuclear cells (PBMCs) from treatment-naïve subjects with CD or without CD (controls), and measured SHIP levels and activity. PBMCs were incubated with lipopolysaccharide and adenosine triphosphate, and levels of IL1β production were measured. RESULTS Inflamed intestinal tissues and intestinal macrophages from SHIP-null mice produced higher levels of IL1B and IL18 than intestinal tissues from control mice. We found PI3Kp110α to be required for macrophage transcription of Il1b. Macrophage depletion or injection of an IL1 receptor antagonist reduced ileal inflammation in SHIP-null mice. Inflamed ileal tissues and PBMCs from patients with CD had lower levels of SHIP protein than controls (P < .0001 and P < .0002, respectively). There was an inverse correlation between levels of SHIP activity in PBMCs and induction of IL1β production by lipopolysaccharide and adenosine triphosphate (R(2) = .88). CONCLUSIONS Macrophages from SHIP-deficient mice have increased PI3Kp110α-mediated transcription of Il1b, which contributes to spontaneous ileal inflammation. SHIP levels and activity are lower in intestinal tissues and peripheral blood samples from patients with CD than controls. There is an inverse correlation between SHIP activity and induction of IL1β production by lipopolysaccharide and adenosine triphosphate in PBMCs. Strategies to reduce IL1B might be developed to treat patients with CD found to have low SHIP activity.
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Affiliation(s)
- Eyler N Ngoh
- Division of Gastroenterology, Department of Pediatrics, Child & Family Research Institute, BC Children's Hospital, University of British Columbia, Vancouver, British Columbia, Canada
| | - Shelley B Weisser
- Division of Gastroenterology, Department of Pediatrics, Child & Family Research Institute, BC Children's Hospital, University of British Columbia, Vancouver, British Columbia, Canada
| | - Young Lo
- Division of Gastroenterology, Department of Pediatrics, Child & Family Research Institute, BC Children's Hospital, University of British Columbia, Vancouver, British Columbia, Canada
| | - Lisa K Kozicky
- Division of Gastroenterology, Department of Pediatrics, Child & Family Research Institute, BC Children's Hospital, University of British Columbia, Vancouver, British Columbia, Canada
| | - Roger Jen
- Division of Gastroenterology, Department of Pediatrics, Child & Family Research Institute, BC Children's Hospital, University of British Columbia, Vancouver, British Columbia, Canada
| | - Hayley K Brugger
- Division of Gastroenterology, Department of Pediatrics, Child & Family Research Institute, BC Children's Hospital, University of British Columbia, Vancouver, British Columbia, Canada
| | - Susan C Menzies
- Division of Gastroenterology, Department of Pediatrics, Child & Family Research Institute, BC Children's Hospital, University of British Columbia, Vancouver, British Columbia, Canada
| | - Keith W McLarren
- Division of Gastroenterology, Department of Pediatrics, Child & Family Research Institute, BC Children's Hospital, University of British Columbia, Vancouver, British Columbia, Canada
| | - Dominika Nackiewicz
- Department of Surgery, Child & Family Research Institute, and University of British Columbia, Vancouver, British Columbia, Canada
| | - Nico van Rooijen
- Department of Molecular Cell Biology, Vrije Universiteit, Amsterdam, Netherlands
| | - Kevan Jacobson
- Division of Gastroenterology, Department of Pediatrics, Child & Family Research Institute, BC Children's Hospital, University of British Columbia, Vancouver, British Columbia, Canada
| | - Jan A Ehses
- Department of Surgery, Child & Family Research Institute, and University of British Columbia, Vancouver, British Columbia, Canada
| | - Stuart E Turvey
- Division of Allergy and Immunology, Department of Pediatrics, Child & Family Research Institute, BC Children's Hospital, and the University of British Columbia, Vancouver, British Columbia, Canada
| | - Laura M Sly
- Division of Gastroenterology, Department of Pediatrics, Child & Family Research Institute, BC Children's Hospital, University of British Columbia, Vancouver, British Columbia, Canada.
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50
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Leung G, Petri B, Reyes JL, Wang A, Iannuzzi J, McKay DM. Cryopreserved Interleukin-4-Treated Macrophages Attenuate Murine Colitis in an Integrin β7 - Dependent Manner. Mol Med 2015; 21:924-936. [PMID: 26701314 DOI: 10.2119/molmed.2015.00193] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Accepted: 12/08/2015] [Indexed: 01/15/2023] Open
Abstract
The adoptive transfer of alternatively activated macrophages (AAMs) has proven to attenuate inflammation in multiple mouse models of colitis; however, the effect of cryopreservation on AAMs, the ability of previously frozen AAMs to block dinitrobenzene sulfonic acid (DNBS) (Th1) and oxazolone (Th2) colitis and their migration postinjection remains unknown. Here we have found that while cryopreservation reduced mRNA expression of canonical markers of interleukin (IL)-4-treated macrophages [M(IL-4)], this step did not translate to reduced protein or activity, and the cells retained their capacity to drive the suppression of colitis. The anticolitic effect of M(IL-4) adoptive transfer required neither T or B cell nor peritoneal macrophages in the recipient. After injection into the peritoneal cavity, M(IL-4)s migrated to the spleen, mesenteric lymph nodes and colon of DNBS-treated mice. The chemokines CCL2, CCL4 and CX3CL1 were expressed in the colon during the course of DNBS-induced colitis. The expression of integrin β7 on transferred M(IL-4)s was required for their anticolitic effect, whereas the presence of the chemokine receptors CCR2 and CX3CR1 were dispensable in this model. Collectively, the data show that M(IL-4)s can be cryopreserved M(IL-4)s and subsequently used to suppress colitis in an integrin β7-dependent manner, and we suggest that these proof-of-concept studies may lead to new cellular therapies for human inflammatory bowel disease.
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Affiliation(s)
- Gabriella Leung
- Gastrointestinal Research Group, Department of Physiology and Pharmacology, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
| | - Björn Petri
- Mouse Phenomics Resource Laboratory, Department of Microbiology, Immunology and Infectious Diseases, Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - José Luis Reyes
- Gastrointestinal Research Group, Department of Physiology and Pharmacology, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
| | - Arthur Wang
- Gastrointestinal Research Group, Department of Physiology and Pharmacology, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
| | - Jordan Iannuzzi
- Gastrointestinal Research Group, Department of Physiology and Pharmacology, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
| | - Derek M McKay
- Gastrointestinal Research Group, Department of Physiology and Pharmacology, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
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