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Gu X, Zhang L, Sun M, Zhou Y, Ji J, Xu Y, You J, Deng Z. Dexamethasone promotes renal fibrosis by upregulating ILT4 expression in myeloid-derived suppressor cells. J Cell Mol Med 2024; 28:e18310. [PMID: 38676361 PMCID: PMC11053352 DOI: 10.1111/jcmm.18310] [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: 11/02/2023] [Revised: 03/09/2024] [Accepted: 03/26/2024] [Indexed: 04/28/2024] Open
Abstract
Studies have shown that adoptive transfer of myeloid-derived suppressor cells (MDSCs) can alleviate various inflammatory diseases, including glomerulonephritis, but the long-term effects of the transferred MDSCs are still unclear. In addition, although glucocorticoids exert immunosuppressive effects on inflammatory diseases by inducing the expansion of MDSCs, the impact of glucocorticoids on the immunosuppressive function of MDSCs and their molecular mechanisms are unclear. In this study, we found that adoptive transfer of MDSCs to doxorubicin-induced focal segmental glomerulosclerosis (FSGS) mice for eight consecutive weeks led to an increase in serum creatinine and proteinuria and aggravation of renal interstitial fibrosis. Similarly, 8 weeks of high-dose dexamethasone administration exacerbated renal interstitial injury and interstitial fibrosis in doxorubicin-induced mice, manifested as an increase in serum creatinine and proteinuria, collagen deposition and α-SMA expression. On this basis, we found that dexamethasone could enhance MDSC expression and secretion of the fibrosis-related cytokines TGF-β and IL-10. Mechanistically, we revealed that dexamethasone promotes the expression of immunoglobulin-like transcription factor 4 (ILT4), which enhances the T-cell inhibitory function of MDSCs and promotes the activation of STAT6, thereby strengthening the expression and secretion of TGF-β and IL-10. Knocking down ILT4 alleviated renal fibrosis caused by adoptive transfer of MDSCs. Therefore, our findings demonstrate that the role and mechanism of dexamethasone mediate the expression and secretion of TGF-β and IL-10 in MDSCs by promoting the expression of ILT4, thereby leading to renal fibrosis.
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Affiliation(s)
- Xiaowen Gu
- Department of Blood TransfusionThe Affiliated Huaian No.1 People's Hospital of Nanjing Medical UniversityHuai'anChina
| | - Lianmei Zhang
- Department of Blood TransfusionThe Affiliated Huaian No.1 People's Hospital of Nanjing Medical UniversityHuai'anChina
| | - Min Sun
- Department of Science and EducationHuai'an Municipal Center for Disease Control and PreventionHuai'anChina
| | - Ying Zhou
- Department of Blood TransfusionThe Affiliated Huaian No.1 People's Hospital of Nanjing Medical UniversityHuai'anChina
| | - Jinling Ji
- Department of Blood TransfusionThe Affiliated Huaian No.1 People's Hospital of Nanjing Medical UniversityHuai'anChina
| | - YunFang Xu
- Clinical LaboratoryHuai'an No 4 People's HospitalHuai'anChina
| | - Jianguo You
- Department of Blood TransfusionThe Affiliated Huaian No.1 People's Hospital of Nanjing Medical UniversityHuai'anChina
| | - Zhikui Deng
- Department of Blood TransfusionThe Affiliated Huaian No.1 People's Hospital of Nanjing Medical UniversityHuai'anChina
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Quan W, Qin Y, Li J, Wang L, Song J, Xu J, Chen J. Causal role of myeloid cells in Parkinson's disease: Mendelian randomization study. Inflamm Res 2024; 73:809-818. [PMID: 38538756 DOI: 10.1007/s00011-024-01867-8] [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: 11/13/2023] [Revised: 02/20/2024] [Accepted: 02/23/2024] [Indexed: 04/30/2024] Open
Abstract
BACKGROUND Previous studies have observed elevated myeloid cells in the peripheral blood of patients with Parkinson's disease (PD), but the causal relationship between them remains to be elucidated. We investigated whether there is a causal relationship between different subtypes of peripheral blood myeloid cells and PD using Mendelian randomization (MR) combined with bioinformatics analysis. Exploring the etiology of PD from the perspective of genetics can remove confounding factors and provide a more reliable theoretical basis for elucidating the pathogenesis of PD. METHODS Comprehensive two-sample MR analysis and sensitivity analyses were conducted to explore the causal associations between 64 myeloid cell signatures and PD risk. The Venn diagram and protein-protein interaction network analysis of instrumental variables (IV) corresponding genes were used to further investigate the potential mechanism of myeloid cells influencing the pathogenesis of PD. RESULTS We investigated the impact of four immunophenotypes on the risk of PD, including Im MDSC% CD33dim HLA DR- CD66b- (relative count), CD33dim HLA DR+ CD11b+% CD33dim HLA DR+ (relative count), and CD11b on Mo MDSC (MFI) and CD11b on CD33br HLA DR+ CD14dim (MFI), while an immunophenotype's protective effect on PD was observed CD45 on Im MDSC (MFI). The results of bioinformatics analysis showed that CD33, NTRK2, PLD2, GRIK2 and RELN had protein interactions with the risk genes of PD. CONCLUSIONS Our study has demonstrated a close genetic correlation between different subtypes of myeloid cells and PD, providing guidance for early identification and immunotherapeutic development in patients with PD.
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Affiliation(s)
- Wei Quan
- Department of Neurology, China-Japan Union Hospital of Jilin University, No. 126, Xian Tai Road, Changchun, 130021, Jilin, China
| | - Yidan Qin
- Department of Neurology, China-Japan Union Hospital of Jilin University, No. 126, Xian Tai Road, Changchun, 130021, Jilin, China
| | - Jia Li
- Department of Neurology, China-Japan Union Hospital of Jilin University, No. 126, Xian Tai Road, Changchun, 130021, Jilin, China
| | - Lin Wang
- Department of Neurology, China-Japan Union Hospital of Jilin University, No. 126, Xian Tai Road, Changchun, 130021, Jilin, China
| | - Jia Song
- Department of Neurology, China-Japan Union Hospital of Jilin University, No. 126, Xian Tai Road, Changchun, 130021, Jilin, China
| | - Jing Xu
- Department of Neurology, China-Japan Union Hospital of Jilin University, No. 126, Xian Tai Road, Changchun, 130021, Jilin, China
| | - Jiajun Chen
- Department of Neurology, China-Japan Union Hospital of Jilin University, No. 126, Xian Tai Road, Changchun, 130021, Jilin, China.
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Lee JY, Kim S, Sohn HJ, Kim CH, Kim TG, Lee HS. Local Myeloid-Derived Suppressor Cells Impair Progression of Experimental Autoimmune Uveitis by Alleviating Oxidative Stress and Inflammation. Invest Ophthalmol Vis Sci 2023; 64:39. [PMID: 37878302 PMCID: PMC10615146 DOI: 10.1167/iovs.64.13.39] [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: 05/03/2023] [Accepted: 10/06/2023] [Indexed: 10/26/2023] Open
Abstract
Purpose To evaluate the immune regulatory effect of human cord blood myeloid-derived suppressor cells (MDSCs) in experimental autoimmune uveitis (EAU) models. Methods MDSCs (1 × 106) or PBS were injected into established C57BL/6 EAU mice via the subconjunctival route on days 0 and 7. The severity of intraocular inflammation was evaluated for up to 3 weeks. Tissue injury and inflammation were analyzed using immunolabelled staining, real-time PCR, and ELISA. In addition, immune cells in draining lymph nodes (LNs) were quantified using flow cytometry. Results After 21 days, the clinical scores and histopathological grades of EAU were lower in the MDSCs group compared with the PBS group. Local administration of MDSCs suppressed the oxidative stress and the expression of TNF-α and IL-1β in the retinal tissues. In addition, it inhibited the activation of pathogenic T helper 1 (Th1) and Th17 cells in draining LNs. MDSCs increased the frequency of CD25+ Foxp3+ regulatory T cells and the mRNA expression of IL-10, as an immune modulator. Conclusions MDSCs suppressed inflammation and oxidative stress in the retina and inhibited pathogenic T cells in the LNs in EAU. Therefore, ocular administration of MDSCs has therapeutic potential for uveitis.
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Affiliation(s)
- Jae-Young Lee
- Department of Ophthalmology, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sueon Kim
- ViGenCell Inc., Seoul, Republic of Korea
| | | | | | - Tai-Gyu Kim
- ViGenCell Inc., Seoul, Republic of Korea
- Catholic Hematopoietic Stem Cell Bank, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hyun Soo Lee
- Department of Ophthalmology, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California, United States
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Local and Systemic Injections of Human Cord Blood Myeloid-Derived Suppressor Cells to Prevent Graft Rejection in Corneal Transplantation. Biomedicines 2022; 10:biomedicines10123223. [PMID: 36551981 PMCID: PMC9776015 DOI: 10.3390/biomedicines10123223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/06/2022] [Accepted: 12/09/2022] [Indexed: 12/14/2022] Open
Abstract
Myeloid-derived suppressor cells (MDSCs) are therapeutic agents to prevent graft rejection in organ transplants by modulating inflammation. Herein, the immunosuppressive effect of human cord blood MDSCs on corneal allograft models was confirmed. CB-MDSCs were locally (subconjuctival, 5 × 105) or systemically (intravenous, 1 × 106) injected twice on days 0 and 7. A corneal transplantation model was established using C57BL/6 and BALB/c mice, and corneal graft opacity was measured to evaluate graft rejection up to 6 weeks. Results showed that graft survival in the MDSCs groups increased compared to vehicle groups after 42 days. Systemic and local MDSC administration inhibited the maturation (MHC-IIhi CD11c+) of dendritic cells (DCs) and the differentiation of interferon γ+ CD4+ Th1 in draining lymph nodes (LNs). However, vehicle groups increased the infiltration of CD3+ T cells and F4/80+ macrophages and produced prominent neovascular and lymphatic vessels into the graft site with increased mRNA expression of VEGF-A/C and VEGFR-1/R-3. Local MDSCs administration showed prominent anti-angiogenic/anti-lymphangiogenic effects even at lower MDSCs doses. Thus, CB-MDSCs could relatively suppress the infiltration of pathological T cells/macrophages into the corneas and the migration of mature DCs into draining LNs Therefore, ocular and systemic MDSCs administration showed therapeutic potential for preventing corneal allograft rejection.
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Sultan M, Adawi M, Kol N, McCourt B, Adawi I, Baram L, Tal N, Werner L, Lev A, Snapper SB, Barel O, Konnikova L, Somech R, Shouval DS. RIPK1 mutations causing infantile-onset IBD with inflammatory and fistulizing features. Front Immunol 2022; 13:1041315. [PMID: 36466854 PMCID: PMC9716469 DOI: 10.3389/fimmu.2022.1041315] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Accepted: 10/04/2022] [Indexed: 08/13/2023] Open
Abstract
PURPOSE Receptor-interacting serine/threonine-protein kinase 1 (RIPK1) is an important regulator of necroptosis and inflammatory responses. We present the clinical features, genetic analysis and immune work-up of two patients with infantile-onset inflammatory bowel disease (IBD) resulting from RIPK1 mutations. METHODS Whole exome and Sanger sequencing was performed in two IBD patients. Mass cytometry time of flight (CyTOF) was conducted for in-depth immunophenotyping on one of the patient's peripheral blood mononuclear cells, and compared to control subjects and patients with Crohn's disease. RESULTS The patients presented with severe colitis and perianal fistulas in the first months of life, without severe/atypical infections. Genetic studies identified pathogenic genetic variants in RIPK1 (Patient 1, A c.1934C>T missense mutation in Exon 11; Patient 2, c.580G>A missense mutation residing in Exon 4). Protein modeling demonstrated that the mutation in Patient 1 displaces a water molecule, potentially disrupting the local environment, and the mutation in Patient 2 may lead to disruption of the packing and conformation of the kinase domain. Immunofluorescence RIPK1 staining in rectal biopsies demonstrated no expression for Patient 1 and minimal expression for Patient 2, compared to controls and patients with active Crohn's disease. Using CyTOF unbiased clustering analysis, we identified peripheral immune dysregulation in one of these patients, characterized by an increase in IFNγ CD8+ T cells along with a decrease in monocytes, dendritic cells and B cells. Moreover, RIPK1-deficient patient's immune cells exhibited decreased IL-6 production in response to lipopolysaccharide (LPS) across multiple cell types including T cells, B cells and innate immune cells. CONCLUSIONS Mutations in RIPK1 should be considered in very young patients presenting with colitis and perianal fistulas. Given RIPK1's role in inflammasome activation, but also in epithelial cells, it is unclear whether IL1 blockade or allogeneic hematopoietic stem cell transplantation can suppress or cure the hyper-inflammatory response in these patients. Additional studies in humans are required to better define the role of RIPK1 in regulating intestinal immune responses, and how treatment can be optimized for patients with RIPK1 deficiency.
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Affiliation(s)
- Mutaz Sultan
- Department of Pediatrics, Faculty of Medicine, Makassed Hospital, Al-Quds University, Jerusalem, Palestine
| | - Mohammad Adawi
- Department of Pediatrics, Faculty of Medicine, Makassed Hospital, Al-Quds University, Jerusalem, Palestine
| | - Nitzan Kol
- The Genomic Unit, Sheba Cancer Research Center, Sheba Medical Center, Ramat Gan, Israel
- Wohl Institute of Translational Medicine, Sheba Medical Center, Ramat Gan, Israel
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Blake McCourt
- Department of Pediatrics, Yale Medical School, New Haven, CT, United States
- Department of Obstetrics, Gynecology and Reproductive Sciences, Human and Translational Immunology, Yale Medical School, New Haven, CT, United States
| | - Ihda Adawi
- Department of Pediatrics, Faculty of Medicine, Makassed Hospital, Al-Quds University, Jerusalem, Palestine
| | - Liran Baram
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
- Institute of Gastroenterology, Nutrition and Liver Diseases, Schneider Children’s Medical Center of Israel, Petah Tiqwa, Israel
| | - Noa Tal
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
- Institute of Gastroenterology, Nutrition and Liver Diseases, Schneider Children’s Medical Center of Israel, Petah Tiqwa, Israel
| | - Lael Werner
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
- Institute of Gastroenterology, Nutrition and Liver Diseases, Schneider Children’s Medical Center of Israel, Petah Tiqwa, Israel
| | - Atar Lev
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
- Pediatric Immunology Service, Edmond and Lily Safra Children’s Hospital, Sheba Medical Center, Ramat Gan, Israel
- Pediatric Department Ward A, Edmond and Lily Safra Children’s Hospital, Sheba Medical Center, Ramat Gan, Israel
- Jeffrey Modell Foundation Center, Edmond and Lily Safra Children’s Hospital, Sheba Medical Center, Ramat Gan, Israel
| | - Scott B. Snapper
- Division of Gastroenterology, Hepatology and Nutrition, Boston Children’s Hospital, Boston, MA, United States
- Department of Medicine, Harvard Medical School, Boston, MA, United States
| | - Ortal Barel
- The Genomic Unit, Sheba Cancer Research Center, Sheba Medical Center, Ramat Gan, Israel
- Wohl Institute of Translational Medicine, Sheba Medical Center, Ramat Gan, Israel
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Liza Konnikova
- Department of Pediatrics, Yale Medical School, New Haven, CT, United States
- Department of Obstetrics, Gynecology and Reproductive Sciences, Human and Translational Immunology, Yale Medical School, New Haven, CT, United States
| | - Raz Somech
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
- Pediatric Immunology Service, Edmond and Lily Safra Children’s Hospital, Sheba Medical Center, Ramat Gan, Israel
- Pediatric Department Ward A, Edmond and Lily Safra Children’s Hospital, Sheba Medical Center, Ramat Gan, Israel
- Jeffrey Modell Foundation Center, Edmond and Lily Safra Children’s Hospital, Sheba Medical Center, Ramat Gan, Israel
| | - Dror S. Shouval
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
- Institute of Gastroenterology, Nutrition and Liver Diseases, Schneider Children’s Medical Center of Israel, Petah Tiqwa, Israel
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Chen L, Wang Y, Huang J, Hu B, Huang W. Identification of Immune-Related Hub Genes in Parkinson’s Disease. Front Genet 2022; 13:914645. [PMID: 35938039 PMCID: PMC9353688 DOI: 10.3389/fgene.2022.914645] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 06/02/2022] [Indexed: 11/13/2022] Open
Abstract
Background: Parkinson’s disease (PD) is a common, age-related, and progressive neurodegenerative disease. Growing evidence indicates that immune dysfunction plays an essential role in the pathogenic process of PD. The objective of this study was to explore potential immune-related hub genes and immune infiltration patterns of PD. Method: The microarray expression data of human postmortem substantia nigra samples were downloaded from GSE7621, GSE20141, and GSE49036. Key module genes were screened via weighted gene coexpression network analysis, and immune-related genes were intersected to obtain immune-key genes. Functional enrichment analysis was performed on immune-key genes of PD. In addition to, immune infiltration analysis was applied by a single-sample gene set enrichment analysis algorithm to detect differential immune cell types in the substantia nigra between PD samples and control samples. Least absolute shrinkage and selection operator analysis was performed to further identify immune-related hub genes for PD. Receiver operating characteristic curve analysis of the immune-related hub genes was used to differentiate PD patients from healthy controls. Correlations between immune-related hub genes and differential immune cell types were assessed. Result: Our findings identified four hub genes (SLC18A2, L1CAM, S100A12, and CXCR4) and seven immune cell types (neutrophils, T follicular helper cells, myeloid-derived suppressor cells, type 1 helper cells, immature B cells, immature dendritic cells, and CD56 bright natural killer cells). The area under the curve (AUC) value of the four-gene-combined model was 0.92. The AUC values of each immune-related hub gene (SLC18A2, L1CAM, S100A12, and CXCR4) were 0.81, 0.78, 0.78, and 0.76, respectively. Conclusion: In conclusion, SLC18A2, L1CAM, S100A12, and CXCR4 were identified as being associated with the pathogenesis of PD and should be further researched.
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Affiliation(s)
- Lin Chen
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yong Wang
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Juan Huang
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Binbin Hu
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Wei Huang
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
- *Correspondence: Wei Huang,
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Braun C, Weichhart T. mTOR-dependent immunometabolism as Achilles' heel of anticancer therapy. Eur J Immunol 2021; 51:3161-3175. [PMID: 34648202 DOI: 10.1002/eji.202149270] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 07/07/2021] [Accepted: 10/06/2021] [Indexed: 12/14/2022]
Abstract
Immune cells are important constituents of the tumor microenvironment and essential in eradicating tumor cells during conventional therapies or novel immunotherapies. The mechanistic target of rapamycin (mTOR) signaling pathway senses the intra- and extracellular nutrient status, growth factor supply, and cell stress-related changes to coordinate cellular metabolism and activation dictating effector and memory functions in mainly all hematopoietic immune cells. In addition, the mTOR complex 1 (mTORC1) and mTORC2 are frequently deregulated and become activated in cancer cells to drive cell transformation, survival, neovascularization, and invasion. In this review, we provide an overview of the influence of mTOR complexes on immune and cancer cell function and metabolism. We discuss how mTOR inhibitors aiming to target cancer cells will influence immunometabolic cell functions participating either in antitumor responses or favoring tumor cell progression in individual immune cells. We suggest immunometabolism as the weak spot of anticancer therapy and propose to evaluate patients according to their predominant immune cell subtype in the cancer tissue. Advances in metabolic drug development that hold promise for more effective treatments in different types of cancer will have to consider their effects on the immune system.
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Affiliation(s)
- Clarissa Braun
- Center of Pathobiochemistry and Genetics, Institute of Medical Genetics, Medical University of Vienna, Vienna, Austria.,Clinical Division of Endocrinology and Metabolism, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | - Thomas Weichhart
- Center of Pathobiochemistry and Genetics, Institute of Medical Genetics, Medical University of Vienna, Vienna, Austria
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Shahnazari M, Samadi P, Pourjafar M, Jalali A. Cell-based immunotherapy approaches for colorectal cancer: main achievements and challenges. Future Oncol 2021; 17:3253-3270. [PMID: 34156258 DOI: 10.2217/fon-2020-1218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Immunotherapy is becoming as a major treatment modality for multiple types of solid tumors, including subsets of colorectal cancers (CRCs). The successes with immunotherapy alone has largely been achieved in patients with advanced-stage mismatch-repair-deficient and microsatellite instability-high (dMMR-MSI-H) CRCs. However, the benefits of immunotherapy have not been demonstrated to be effective in patients with proficient mismatch repair (pMMR) CRC, who are microsatellite-stable (MSS) or have low levels of microsatellite instability (MSI-L). Here, we provide a comprehensive review on the immune microenvironment of CRC tumors and describe the rapid pace of scientific changes. We discuss the tremendous promise of cell-based immunotherapy strategies that are under preclinical studies/clinical trials or being used in therapeutic paradigms.
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Affiliation(s)
- Mina Shahnazari
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Shahid fahmideh boulevard, 6517838687, Hamadan, Iran
| | - Pouria Samadi
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Shahid fahmideh boulevard, 6517838687, Hamadan, Iran
| | - Mona Pourjafar
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Shahid fahmideh boulevard, 6517838687, Hamadan, Iran.,Department of Biological & Chemical Engineering Immunological Biotechnology, Aarhus University, Inge Lehmanns Gade 10, 8000 Aarhus C, Aarhus, Denmark
| | - Akram Jalali
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Shahid fahmideh boulevard, 6517838687, Hamadan, Iran
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Comments on the ambiguity of selected surface markers, signaling pathways and omics profiles hampering the identification of myeloid-derived suppressor cells. Cell Immunol 2021; 364:104347. [PMID: 33838447 DOI: 10.1016/j.cellimm.2021.104347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 03/23/2021] [Accepted: 03/24/2021] [Indexed: 12/12/2022]
Abstract
Myeloid-derived suppressor cells (MDSC) are important immune-regulatory cells but their identification remains difficult. Here, we provide a critical view on selected surface markers, transcriptional and translational pathways commonly used to identify MDSC by specific, their developmental origin and new possibilities by transcriptional or proteomic profiling. Discrimination of MDSC from their non-suppressive counterparts is a prerequisite for the development of successful therapies. Understanding the switch mechanisms that direct granulocytic and monocytic development into a pro-inflammatory or anti-inflammatory direction will be crucial for therapeutic strategies. Manipulation of these myeloid checkpoints are exploited by tumors and pathogens, such as M. tuberculosis (Mtb), HIV or SARS-CoV-2, that induce MDSC for immune evasion. Thus, specific markers for MDSC identification may reveal also novel molecular candidates for therapeutic intervention at the level of MDSC.
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10
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Acetylcholine ameliorates colitis by promoting IL-10 secretion of monocytic myeloid-derived suppressor cells through the nAChR/ERK pathway. Proc Natl Acad Sci U S A 2021; 118:2017762118. [PMID: 33836585 DOI: 10.1073/pnas.2017762118] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The alteration of the enteric nervous system (ENS) and its role in neuroimmune modulation remain obscure in the pathogenesis of inflammatory bowel diseases (IBDs). Here, by using the xCell tool and the latest immunolabeling-enabled three-dimensional (3D) imaging of solvent-cleared organs technique, we found severe pathological damage of the entire ENS and decreased expression of choline acetyltransferase (ChAT) in IBD patients. As a result, acetylcholine (ACh), a major neurotransmitter of the nervous system synthesized by ChAT, was greatly reduced in colon tissues of both IBD patients and colitis mice. Importantly, administration of ACh via enema remarkably ameliorated colitis, which was proved to be directly dependent on monocytic myeloid-derived suppressor cells (M-MDSCs). Furthermore, ACh was demonstrated to promote interleukin-10 secretion of M-MDSCs and suppress the inflammation through activating the nAChR/ERK pathway. The present data reveal that the cholinergic signaling pathway in the ENS is impaired during colitis and uncover an ACh-MDSCs neuroimmune regulatory pathway, which may offer promising therapeutic strategies for IBDs.
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11
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Wang Y, Ding Y, Deng Y, Zheng Y, Wang S. Role of myeloid-derived suppressor cells in the promotion and immunotherapy of colitis-associated cancer. J Immunother Cancer 2020; 8:jitc-2020-000609. [PMID: 33051339 PMCID: PMC7555106 DOI: 10.1136/jitc-2020-000609] [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] [Accepted: 08/26/2020] [Indexed: 12/11/2022] Open
Abstract
Colitis-associated cancer (CAC) is a specific type of colorectal cancer that develops from inflammatory bowel disease (IBD). Myeloid-derived suppressor cells (MDSCs) are a heterogeneous population of immature myeloid cells that are essential for the pathological processes of inflammation and cancer. Accumulating evidence indicates that MDSCs play different but vital roles during IBD and CAC development and impede CAC immunotherapy. New insights into the regulatory network of MDSCs in the CAC pathogenesis are opening new avenues for developing strategies to enhance the effectiveness of CAC treatment. In this review, we explore the role of MDSCs in chronic inflammation, dysplasia and CAC and summarize the potential CAC therapeutic strategies based on MDSC blockade.
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Affiliation(s)
- Yungang Wang
- Department of Laboratory Medicine, The First People's Hospital of Yancheng, Nanjing University Medical School, Yancheng, China
| | - Yanxia Ding
- Department of Dermatology, The First People's Hospital of Yancheng, Nanjing University Medical School, Yancheng, China
| | - Yijun Deng
- Department of Critical Care Medicine, The First People's Hospital of Yancheng, Nanjing University Medical School, Yancheng, China
| | - Yu Zheng
- Department of Laboratory Medicine, The First People's Hospital of Yancheng, Nanjing University Medical School, Yancheng, China
| | - Shengjun Wang
- Department of Laboratory Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, China
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12
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Moulari B, Shetab Boushehri MA, Pais de Barros JP, Faber T, Béduneau A, Lagrost L, Pellequer Y, Lamprecht A. Nanosphere-shaped ammonio methacrylate copolymers: converting a pharmaceutical inactive ingredient to efficient therapeutics for experimental colitis. NANOSCALE 2020; 12:9590-9602. [PMID: 32314992 DOI: 10.1039/d0nr00465k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Inflammatory bowel disease (IBD) refers to progressive inflammatory disorders that impair the gastrointestinal tract's structure and function. Given their selective accumulation in inflamed tissues, nanoparticles are promising drug delivery systems for IBD treatment. The hypothesis here was that drug-free nanoscaled cationic ammonio methacrylate copolymers (AMCNP) may have a beneficial therapeutic effect in murine TNBS-induced colitis. Type A and B AMCNP (RLNP and RSNP, respectively) were prepared and characterized in vitro, and were rectally administered in two concentrations (5 and 25 mg ml-1) for the treatment of two grades of murine experimental colitis. The impact of the nanoparticles upon the inflammatory markers, circulating LPS, intestinal permeability and colonic leukocyte populations was examined. Both RLNP and RSNP led to a significant mitigation of mild to moderate experimental colitis, as evident from the substantial reduction of myeloperoxidase (MPO) and alkaline phosphatase (AP) activities (more than two-fold, P < 0.05) and various pro-inflammatory cytokine concentrations (TNF-α, IL-1β, IL-6, IL-12). The best therapeutic efficiency was observed when the particles were used at 5 mg ml-1, while the more cationic RLNP performed superior. When used against a severe grade of colitis, RLNP (5 mg ml-1) resulted in a significant decrease of tissue MPO and TNF-α. It was found that treatment with AMCNP resulted in significant intestinal immune cell depletion, intestinal barrier function improvement, and 1.5-2.5 times reduction of the systemic endotoxin concentration. These findings highlighted the fact that nanoscaling endows the cationic amphiphilic AMCs unique therapeutic properties, which help mitigate murine experimental colitis in the absence of any drug load. The results also provided a glimpse of possible underlying mechanisms through which nanoscaled AMCs might have exerted their therapeutic effect within this context.
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Affiliation(s)
- Brice Moulari
- PEPITE EA4267, Univ. Bourgogne Franche-Comte, Besançon, France.
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13
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Sendo S, Saegusa J, Morinobu A. Myeloid-derived suppressor cells in non-neoplastic inflamed organs. Inflamm Regen 2018; 38:19. [PMID: 30237829 PMCID: PMC6139938 DOI: 10.1186/s41232-018-0076-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 06/26/2018] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Myeloid-derived suppressor cells (MDSCs) are a highly heterogeneous population of immature myeloid cells with immunosuppressive function. Although their function in tumor-bearing conditions is well studied, less is known about the role of MDSCs in various organs under non-neoplastic inflammatory conditions. MAIN BODY MDSCs are divided into two subpopulations, G-MDSCs and M-MDSCs, and their distribution varies between organs. MDSCs negatively control inflammation in inflamed organs such as the lungs, joints, liver, kidneys, intestines, central nervous system (CNS), and eyes by suppressing T cells and myeloid cells. MDSCs also regulate fibrosis in the lungs, liver, and kidneys and help repair CNS injuries. MDSCs in organs are plastic and can differentiate into osteoclasts and tolerogenic dendritic cells according to the microenvironment under non-neoplastic inflammatory conditions. CONCLUSION This article summarizes recent findings about MDSCs under inflammatory conditions, especially with respect to their function and differentiation in specific organs.
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Affiliation(s)
- Sho Sendo
- Division of Rheumatology and Clinical Immunology, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, 650-0017 Japan
| | - Jun Saegusa
- Division of Rheumatology and Clinical Immunology, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, 650-0017 Japan
- Division of Laboratory Medicine, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, 650-0017 Japan
| | - Akio Morinobu
- Division of Rheumatology and Clinical Immunology, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, 650-0017 Japan
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14
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Shi G, Li D, Ren J, Li X, Wang T, Dou H, Hou Y. mTOR inhibitor INK128 attenuates dextran sodium sulfate-induced colitis by promotion of MDSCs on Treg cell expansion. J Cell Physiol 2018; 234:1618-1629. [PMID: 30132862 DOI: 10.1002/jcp.27032] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Accepted: 06/25/2018] [Indexed: 12/24/2022]
Abstract
Accumulating evidence has shown that mammalian target of rapamycin (mTOR) pathway and myeloid-derived suppressor cells (MDSCs) are involved in pathogenesis of inflammatory bowel diseases (IBDs). INK128 is a novel mTOR kinase inhibitor in clinical development. However, the exact roles of MDSCs and INK128 in IBD are unclear. Here, we showed that the INK128 treatment enhanced the resistance of mice to dextran sodium sulfate (DSS)-induced colitis and inhibited the differentiation of MDSCs into macrophages. Moreover, interferon (IFN)-α level was elevated in INK128-treated colitis mice. When stimulated with IFN-α in vitro, MDSCs showed a superior immunosuppression activity. Of note, the regulatory T cells (Tregs) increased but Th1 cells decreased in INK128-treated colitis mice. These results indicate that mTOR inhibitor INK128 attenuates DSS-induced colitis via Treg expansion promoted by MDSCs. Our work provides a new evidence that INK128 is potential to be a therapeutic drug on DSS-induced colitis via regulating MDSCs as well as maintaining Treg expansion.
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Affiliation(s)
- Guoping Shi
- The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, China
| | - Dan Li
- The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, China
| | - Jing Ren
- The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, China
| | - Xiaojing Li
- The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, China
| | - Tingting Wang
- The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, China.,Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Nanjing University, Nanjing, China
| | - Huan Dou
- The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, China.,Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Nanjing University, Nanjing, China
| | - Yayi Hou
- The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, China.,Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Nanjing University, Nanjing, China
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15
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van der Touw W, Kang K, Luan Y, Ma G, Mai S, Qin L, Bian G, Zhang R, Mungamuri SK, Hu HM, Zhang CC, Aaronson SA, Feldmann M, Yang WC, Chen SH, Pan PY. Glatiramer Acetate Enhances Myeloid-Derived Suppressor Cell Function via Recognition of Paired Ig-like Receptor B. THE JOURNAL OF IMMUNOLOGY 2018; 201:1727-1734. [PMID: 30068593 DOI: 10.4049/jimmunol.1701450] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 06/25/2018] [Indexed: 01/26/2023]
Abstract
Glatiramer acetate (GA; Copaxone) is a copolymer therapeutic that is approved by the Food and Drug Administration for the relapsing-remitting form of multiple sclerosis. Despite an unclear mechanism of action, studies have shown that GA promotes protective Th2 immunity and stimulates release of cytokines that suppress autoimmunity. In this study, we demonstrate that GA interacts with murine paired Ig-like receptor B (PIR-B) on myeloid-derived suppressor cells and suppresses the STAT1/NF-κB pathways while promoting IL-10/TGF-β cytokine release. In inflammatory bowel disease models, GA enhanced myeloid-derived suppressor cell-dependent CD4+ regulatory T cell generation while reducing proinflammatory cytokine secretion. Human monocyte-derived macrophages responded to GA by reducing TNF-α production and promoting CD163 expression typical of alternative maturation despite the presence of GM-CSF. Furthermore, GA competitively interacts with leukocyte Ig-like receptors B (LILRBs), the human orthologs of PIR-B. Because GA limited proinflammatory activation of myeloid cells, therapeutics that target LILRBs represent novel treatment modalities for autoimmune indications.
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Affiliation(s)
- William van der Touw
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Kyeongah Kang
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029.,Immunotherapy Research Center, Houston Methodist Research Institute, Houston, TX 77030
| | - Yi Luan
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Ge Ma
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Sunny Mai
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029.,Immunotherapy Research Center, Houston Methodist Research Institute, Houston, TX 77030
| | - Lihui Qin
- Department of Pathology, Weill Cornell Medical College, New York, NY 10065
| | - Guanglin Bian
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Ruihua Zhang
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Sathish Kumar Mungamuri
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Hong-Ming Hu
- Laboratory of Cancer Immunobiology, Earle A. Chiles Research Institute, Providence Portland Medical Center, Portland, OR 97213
| | - Cheng Cheng Zhang
- Department of Physiology, University of Texas Southwestern Medical Center, Dallas, TX 75390.,Department of Developmental Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Stuart A Aaronson
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Marc Feldmann
- Kennedy Institute of Rheumatology, Nuffield Department of Orthopedics, Rheumatology, and Musculoskeletal Science, University of Oxford, Oxford OX3 7FZ, United Kingdom
| | - Wen-Chin Yang
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei 115, Taiwan
| | - Shu-Hsia Chen
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029; .,Immunotherapy Research Center, Houston Methodist Research Institute, Houston, TX 77030.,Center for Infectious Diseases and Cancer Research, Kaohsiung Medical University, Kaohsiung 807, Taiwan; and.,Cancer Center, Houston Methodist Research Institute, Houston, TX 77030
| | - Ping-Ying Pan
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029; .,Immunotherapy Research Center, Houston Methodist Research Institute, Houston, TX 77030.,Cancer Center, Houston Methodist Research Institute, Houston, TX 77030
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16
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Zöller M, Zhao K, Kutlu N, Bauer N, Provaznik J, Hackert T, Schnölzer M. Immunoregulatory Effects of Myeloid-Derived Suppressor Cell Exosomes in Mouse Model of Autoimmune Alopecia Areata. Front Immunol 2018; 9:1279. [PMID: 29951053 PMCID: PMC6008552 DOI: 10.3389/fimmu.2018.01279] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Accepted: 05/22/2018] [Indexed: 01/28/2023] Open
Abstract
The treatment of autoimmune diseases still poses a major challenge, frequently relying on non-specific immunosuppressive drugs. Current efforts aim at reestablishing self tolerance using immune cells with suppressive activity like the regulatory T cells (Treg) or the myeloid-derived suppressor cells (MDSC). We have demonstrated therapeutic efficacy of MDSC in mouse Alopecia Areata (AA). In the same AA model, we now asked whether MDSC exosomes (MDSC-Exo) can replace MDSC. MDSC-Exo from bone marrow cells (BMC) cultures of healthy donors could substantially facilitate treatment. With knowledge on MDSC-Exo being limited, their suitability needs to be verified in advance. Protein marker profiles suggest comparability of BMC- to ex vivo collected inflammatory MDSC/MDSC-Exo in mice with a chronic contact dermatitis, which is a therapeutic option in AA. Proteome analyses substantiated a large overlap of function-relevant molecules in MDSC and MDSC-Exo. Furthermore, MDSC-Exo are taken up by T cells, macrophages, NK, and most avidly by Treg and MDSC-Exo uptake exceeds binding of MDSC themselves. In AA mice, MDSC-Exo preferentially target skin-draining lymph nodes and cells in the vicinity of remnant hair follicles. MDSC-Exo uptake is accompanied by a strong increase in Treg, reduced T helper proliferation, mitigated cytotoxic activity, and a slight increase in lymphocyte apoptosis. Repeated MDSC-Exo application in florid AA prevented progression and sufficed for partial hair regrowth. Deep sequencing of lymphocyte mRNA from these mice revealed a significant increase in immunoregulatory mRNA, including FoxP3 and arginase 1. Downregulated mRNA was preferentially engaged in prohibiting T cell hyperreactivity. Taken together, proteome analysis provided important insights into potential MDSC-Exo activities, these Exo preferentially homing into AA-affected organs. Most importantly, changes in leukocyte mRNA seen after treatment of AA mice with MDSC-Exo sustainably supports the strong impact on the adaptive and the non-adaptive immune system, with Treg expansion being a dominant feature. Thus, MDSC-Exo could potentially serve as therapeutic agents in treating AA and other autoimmune diseases.
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Affiliation(s)
- Margot Zöller
- Tumor Cell Biology, Department of Surgery, University Hospital of Heidelberg, Heidelberg, Germany
| | - Kun Zhao
- Tumor Cell Biology, Department of Surgery, University Hospital of Heidelberg, Heidelberg, Germany
| | - Natalia Kutlu
- Tumor Cell Biology, Department of Surgery, University Hospital of Heidelberg, Heidelberg, Germany
| | - Nathalie Bauer
- Tumor Cell Biology, Department of Surgery, University Hospital of Heidelberg, Heidelberg, Germany
| | - Jan Provaznik
- Gene Core Unit, EMBL Heidelberg, Heidelberg, Germany
| | - Thilo Hackert
- Pancreas Section, Department of Surgery, University Hospital of Heidelberg, Heidelberg, Germany
| | - Martina Schnölzer
- Functional Proteome Analysis, German Cancer Research Center, Heidelberg, Germany
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17
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De Cicco P, Sanders T, Cirino G, Maloy KJ, Ianaro A. Hydrogen Sulfide Reduces Myeloid-Derived Suppressor Cell-Mediated Inflammatory Response in a Model of Helicobacter hepaticus-Induced Colitis. Front Immunol 2018; 9:499. [PMID: 29636751 PMCID: PMC5880908 DOI: 10.3389/fimmu.2018.00499] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 02/26/2018] [Indexed: 12/15/2022] Open
Abstract
Chronic inflammation contributes to tumor initiation in colitis-associated colorectal cancer (CRC). Indeed, inflammatory bowel disease (IBD) patients show an increased risk of developing CRC. Cancer immune evasion is a major issue in CRC and preclinical and clinical evidence has defined a critical role for myeloid-derived suppressor cells (MDSCs) that contribute to tumor growth and progression by suppressing T-cells and modulating innate immune responses. MDSCs comprise a heterogeneous population of immature myeloid cells that can be distinct in two subtypes: CD11b+Ly6G+Ly6Clow with granulocytic phenotype (G-MDSCs) and CD11b+Ly6G−Ly6Chigh with monocytic phenotype (M-MDSCs). Hydrogen sulfide (H2S) is an endogenous gaseous signaling molecule that regulates various physiological and pathophysiological functions. In particular, several studies support its anti-inflammatory activity in experimental colitis and ulcer. However, the role of the H2S pathway in innate immune-mediated IBD has not yet been elucidated. To better define a possible link between MDSCs and H2S pathway in colitis-associated CRC development, we used an innate immune-mediated IBD model induced by infection with the bacterium Helicobacter hepaticus (Hh), closely resembling human IBD. Here, we demonstrated an involvement of MDSCs in colitis development. A significant time-dependent increase of both G-MDSCs and M-MDSCs was observed in the colon and in the spleen of Hh-infected mice. Following, we observed that chronic oral administration of the H2S donor DATS reduced colon inflammation by limiting the recruitment of G-MDSCs in the colon of Hh-infected mice. Thus, we identify the metabolic pathway l-cysteine/H2S as a possible new player in the immunosuppressive mechanism responsible for the MDSCs-promoted colitis-associated cancer development.
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Affiliation(s)
- Paola De Cicco
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Theodore Sanders
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - Giuseppe Cirino
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Kevin J Maloy
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - Angela Ianaro
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
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18
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Negorev D, Beier UH, Zhang T, Quatromoni JG, Bhojnagarwala P, Albelda SM, Singhal S, Eruslanov E, Lohoff FW, Levine MH, Diamond JM, Christie JD, Hancock WW, Akimova T. Human neutrophils can mimic myeloid-derived suppressor cells (PMN-MDSC) and suppress microbead or lectin-induced T cell proliferation through artefactual mechanisms. Sci Rep 2018; 8:3135. [PMID: 29453429 PMCID: PMC5816646 DOI: 10.1038/s41598-018-21450-6] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 01/31/2018] [Indexed: 01/01/2023] Open
Abstract
We report that human conventional CD15+ neutrophils can be isolated in the peripheral blood mononuclear cell (PBMC) layer during Ficoll gradient separation, and that they can impair T cell proliferation in vitro without concomitant neutrophil activation and killing. This effect was observed in a total of 92 patients with organ transplants, lung cancer or anxiety/depression, and in 18 healthy donors. Although such features are typically associated in the literature with the presence of certain myeloid-derived suppressor cell (PMN-MDSC) populations, we found that commercial centrifuge tubes that contained membranes or gels for PBMC isolation led to up to 70% PBMC contamination by CD15+ neutrophils, with subsequent suppressive effects in certain cellular assays. In particular, the suppressive activity of human MDSC should not be evaluated using lectin or microbead stimulation, whereas assays involving soluble or plate-bound antibodies or MLR are unaffected. We conclude that CD15+ neutrophil contamination, and associated effects on suppressor assays, can lead to significant artefacts in studies of human PMN-MDSC.
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Affiliation(s)
- Dmitri Negorev
- The Pathology Bioresource, Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Ulf H Beier
- Division of Nephrology, Department of Pediatrics, Children's Hospital of Philadelphia and University of Pennsylvania, PA, 19104, Philadelphia, USA
| | - Tianyi Zhang
- Division of Transplant Immunology, Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA, USA
| | - Jon G Quatromoni
- Division of Thoracic Surgery, Department of Surgery, University of Pennsylvania, 19104, Philadelphia, PA, USA
| | - Pratik Bhojnagarwala
- Division of Thoracic Surgery, Department of Surgery, University of Pennsylvania, 19104, Philadelphia, PA, USA
| | - Steven M Albelda
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Sunil Singhal
- Division of Thoracic Surgery, Department of Surgery, University of Pennsylvania, 19104, Philadelphia, PA, USA
| | - Evgeniy Eruslanov
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Falk W Lohoff
- Section on Clinical Genomics and Experimental Therapeutics, National Institute on Alcohol Abuse and Alcoholism (NIAAA), National Institutes of Health (NIH), Bethesda, MD, 20892-154, USA
| | - Matthew H Levine
- Department of Surgery, Penn Transplant Institute, Hospital of the University of Pennsylvania and University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Joshua M Diamond
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Jason D Christie
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA.,Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Wayne W Hancock
- Division of Transplant Immunology, Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA, USA
| | - Tatiana Akimova
- Division of Transplant Immunology, Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA, USA.
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19
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Zöller M. Janus-Faced Myeloid-Derived Suppressor Cell Exosomes for the Good and the Bad in Cancer and Autoimmune Disease. Front Immunol 2018; 9:137. [PMID: 29456536 PMCID: PMC5801414 DOI: 10.3389/fimmu.2018.00137] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Accepted: 01/16/2018] [Indexed: 12/22/2022] Open
Abstract
Myeloid-derived suppressor cells (MDSCs) are a heterogeneous population of immature myeloid cells originally described to hamper immune responses in chronic infections. Meanwhile, they are known to be a major obstacle in cancer immunotherapy. On the other hand, MDSC can interfere with allogeneic transplant rejection and may dampen autoreactive T cell activity. Whether MDSC-Exosomes (Exo) can cope with the dangerous and potentially therapeutic activities of MDSC is not yet fully explored. After introducing MDSC and Exo, it will be discussed, whether a blockade of MDSC-Exo could foster the efficacy of immunotherapy in cancer and mitigate tumor progression supporting activities of MDSC. It also will be outlined, whether application of native or tailored MDSC-Exo might prohibit autoimmune disease progression. These considerations are based on the steadily increasing knowledge on Exo composition, their capacity to distribute throughout the organism combined with selectivity of targeting, and the ease to tailor Exo and includes open questions that answers will facilitate optimizing protocols for a MDSC-Exo blockade in cancer as well as for strengthening their therapeutic efficacy in autoimmune disease.
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Affiliation(s)
- Margot Zöller
- Tumor Cell Biology, University Hospital of Surgery, University of Heidelberg, Heidelberg, Germany
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20
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Wang Y, Tian J, Tang X, Rui K, Tian X, Ma J, Ma B, Xu H, Lu L, Wang S. Exosomes released by granulocytic myeloid-derived suppressor cells attenuate DSS-induced colitis in mice. Oncotarget 2017; 7:15356-68. [PMID: 26885611 PMCID: PMC4941246 DOI: 10.18632/oncotarget.7324] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Accepted: 01/29/2016] [Indexed: 12/12/2022] Open
Abstract
Myeloid-derived suppressor cells (MDSC) have been described in inflammatory bowel disease (IBD), but their role in the disease remains controversial. We sought to define the effect of granulocytic MDSC-derived exosomes (G-MDSC exo) in dextran sulphate sodium (DSS)-induced murine colitis. G-MDSC exo-treated mice showed greater resistance to colitis, as reflected by lower disease activity index, decreased inflammatory cell infiltration damage. There was a decrease in the proportion of Th1 cells and an increase in the proportion of regulatory T cells (Tregs) in mesenteric lymph nodes (MLNs) from G-MDSC exo-treated colitis mice. Moreover, lower serum levels of interferon (IFN)-γ and tumor necrosis factor (TNF)-α were detected in G-MDSC exo-treated colitis mice. Interestingly, inhibition of arginase (Arg)-1 activity in G-MDSC exo partially abrogated the spontaneous improvement of colitis. In addition, G-MDSC exo could suppress CD4+ T cell proliferation and IFN-γ secretion in vitro and inhibit the delayed-type hypersensitivity (DTH) response, and these abilities were associated with Arg-1 activity. Moreover, G-MDSC exo promoted the expansion of Tregs in vitro. Taken together, these results suggest that G-MDSC exo attenuate DSS-induced colitis through inhibiting Th1 cells proliferation and promoting Tregs expansion.
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Affiliation(s)
- Yungang Wang
- Department of Laboratory Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, China.,Institute of Laboratory Medicine, Jiangsu Key Laboratory of Laboratory Medicine, Jiangsu University, Zhenjiang, China
| | - Jie Tian
- Institute of Laboratory Medicine, Jiangsu Key Laboratory of Laboratory Medicine, Jiangsu University, Zhenjiang, China
| | - Xinyi Tang
- Department of Laboratory Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, China
| | - Ke Rui
- Institute of Laboratory Medicine, Jiangsu Key Laboratory of Laboratory Medicine, Jiangsu University, Zhenjiang, China
| | - Xinyu Tian
- Institute of Laboratory Medicine, Jiangsu Key Laboratory of Laboratory Medicine, Jiangsu University, Zhenjiang, China
| | - Jie Ma
- Institute of Laboratory Medicine, Jiangsu Key Laboratory of Laboratory Medicine, Jiangsu University, Zhenjiang, China
| | - Bin Ma
- Institute of Laboratory Medicine, Jiangsu Key Laboratory of Laboratory Medicine, Jiangsu University, Zhenjiang, China
| | - Huaxi Xu
- Institute of Laboratory Medicine, Jiangsu Key Laboratory of Laboratory Medicine, Jiangsu University, Zhenjiang, China
| | - Liwei Lu
- Department of Pathology, The University of Hong Kong, Hong Kong, China
| | - Shengjun Wang
- Department of Laboratory Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, China.,Institute of Laboratory Medicine, Jiangsu Key Laboratory of Laboratory Medicine, Jiangsu University, Zhenjiang, China
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21
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The novel α-glucan YCP improves the survival rates and symptoms in septic mice by regulating myeloid-derived suppressor cells. Acta Pharmacol Sin 2017. [PMID: 28649127 DOI: 10.1038/aps.2017.27] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Sepsis is a life-threatening health condition that is initially characterized by uncontrolled inflammation, followed by the development of persistent immunosuppression. YCP is a novel α-glucan purified from the mycelium of the marine fungus Phoma herbarum YS4108, which has displayed strong antitumor activity via enhancing host immune responses. In this study, we investigated whether YCP could influence the development of sepsis in a mouse model. Caecal ligation and puncture (CLP)-induced sepsis was established in mice that were treated with YCP (20 mg/kg, ip or iv) 2 h before, 4 and 24 h after the CLP procedure, and then every other day. YCP administration greatly improved the survival rate (from 39% to 72% on d 10 post-CLP) and ameliorated disease symptoms in the septic mice. Furthermore, YCP administration significantly decreased the percentage of myeloid-derived suppressor cells (MDSCs) in the lungs and livers, which were dramatically elevated during sepsis. In cultured BM-derived cells, addition of YCP (30, 100 μg/mL) significantly decreased the expansion of MDSCs; YCP dose-dependently decreased the phosphorylation of STAT3 and increased the expression of interferon regulatory factor-8 (IRF-8). When BM-derived MDSCs were co-cultured with T cells, YCP dose-dependently increased the production of arginase-1 (Arg-1) and inducible nitric oxide synthase (iNOS), and activated the NF-κB pathway. In addition, the effects of YCP on MDSCs appeared to be dependent on toll-like receptor (TLR) 4. These results reveal that YCP inhibits the expansion of MDSCs via STAT3 while enhancing their immunosuppressive function, partially through NF-κB. Our findings suggest that YCP protects mice against sepsis by regulating MDSCs. Thus, YCP may be a potential therapeutic agent for sepsis.
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22
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Soler DC, McCormick TS. Expanding the List of Dysregulated Immunosuppressive Cells in Psoriasis. J Invest Dermatol 2017; 136:1749-1751. [PMID: 27542294 DOI: 10.1016/j.jid.2016.04.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Accepted: 04/25/2016] [Indexed: 01/29/2023]
Abstract
Traditionally, myeloid-derived suppressor cells (MDSC) have been studied in regard to their increased numbers of circulating cells in cancer patients. Recent research efforts have also increased awareness of MDSC in non-malignant inflammatory diseases, including asthma, inflammatory bowel disease, and arthritis. Psoriasis can now be added to the growing list of inflammatory disorders with an MDSC component. Cao et al. report increased numbers of monocytic myeloid-derived suppressor cells (Mo-MDSC) in psoriasis patients and examine the implication of dysregulated Mo-MDSC function. Cao et al. describe psoriatic Mo-MDSC that produce increased IL-23, IL-1b, and CCL4 cytokines compared to Mo-MDSC from healthy controls. These results complement previous research demonstrating psoriatic Mo-MDSC are unable to suppress autologous and heterologous CD8 T-cell proliferations, display decreased expression levels of PD-1 as well as PD-L1, and fail to produce effective immuno-competent regulatory T cells (Tregs). Cao et al. also identify the unique expression of the surface protein DC-HIL on psoriatic Mo-MDSC. The expanded population of DC-HIL(+) Mo-MDSC in psoriasis patients, however, display inferior suppressive capabilities compared to DC-HIL(+) Mo-MDSC found in melanoma patients, suggesting contextual signaling as a potential contributing factor to Mo-MDSC function.
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Affiliation(s)
- David C Soler
- Department of Dermatology, Case Western Reserve University, Cleveland, Ohio, USA; The Murdough Family Center for Psoriasis, University Hospitals Case Medical Center, Cleveland, Ohio, USA
| | - Thomas S McCormick
- Department of Dermatology, Case Western Reserve University, Cleveland, Ohio, USA; The Murdough Family Center for Psoriasis, University Hospitals Case Medical Center, Cleveland, Ohio, USA.
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Yang L, Guo C, Zhu J, Feng Y, Chen W, Feng Z, Wang D, Sun S, Lin W, Wang Y. Increased Levels of Pro-Inflammatory and Anti-Inflammatory Cellular Responses in Parkinson's Disease Patients: Search for a Disease Indicator. Med Sci Monit 2017. [PMID: 28624842 PMCID: PMC5484607 DOI: 10.12659/msm.904240] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Parkinson's disease (PD) is the second most prevalent neurodegenerative disorder and it arises when most of the dopaminergic neurons of substantia nigra region die. Several mechanisms have been postulated as the causative event in PD pathology, and neuroinflammation is most crucial among them. MATERIAL AND METHODS We analyzed T-helper 17 (Th17) cells and myeloid-derived suppressor cells (MDSCs) from 80 PD patients to assess inflammatory processes and to find a cost-effective means to evaluate PD prognosis. RESULTS We found significantly increased numbers of Th17 cells and MDSCs count in peripheral circulation in PD patients compared with controls (p<0.001). A positive correlation was found between Th17 cells and MDSCs in PD patients (r=0.421, p<0.05). CONCLUSIONS Our results show the effector role of Th17 cells and MDSCs in PD pathology and shows their utility as effective biomarkers for PD diagnosis.
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Affiliation(s)
- Likun Yang
- Department of Neurosurgery, No. 101 Hospital of Chinese PLA, Wuxi, Jiangsu, China (mainland)
| | - Changfeng Guo
- Department of Emergency Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China (mainland)
| | - Jie Zhu
- Department of Neurosurgery, No. 101 Hospital of Chinese PLA, Wuxi, Jiangsu, China (mainland)
| | - Yi Feng
- Department of Neurosurgery, No 101 Hospital of Chinese PLA, Wuxi, Jiangsu, China (mainland)
| | - Weiliang Chen
- Department of Neurosurgery, No 101 Hospital of Chinese PLA, Wuxi, Jiangsu, China (mainland)
| | - Zhizhong Feng
- Department of Neurosurgery, No 101 Hospital of Chinese PLA, Wuxi, Jiangsu, China (mainland)
| | - Dan Wang
- Department of Neurosurgery, No 101 Hospital of Chinese PLA, Wuxi, Jiangsu, China (mainland)
| | - Shibai Sun
- Department of Neurosurgery, No 101 Hospital of Chinese PLA, Wuxi, Jiangsu, China (mainland)
| | - Wei Lin
- Department of Neurosurgery, No 101 Hospital of Chinese PLA, Wuxi, Jiangsu, China (mainland)
| | - Yuhai Wang
- Department of Neurosurgery, No. 101 Hospital of Chinese PLA, Wuxi, Jiangsu, China (mainland)
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Expansion of monocytic myeloid-derived suppressor cells in endometriosis patients: A pilot study. Int Immunopharmacol 2017; 47:150-158. [DOI: 10.1016/j.intimp.2017.03.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 03/25/2017] [Accepted: 03/27/2017] [Indexed: 11/20/2022]
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MicroRNA-20b promotes the accumulation of CD11b+Ly6G+Ly6C low myeloid-derived suppressor cells in asthmatic mice. Cent Eur J Immunol 2017; 42:30-38. [PMID: 28680329 PMCID: PMC5470612 DOI: 10.5114/ceji.2017.67316] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 02/24/2016] [Indexed: 12/25/2022] Open
Abstract
miR-20b is a member of the miR-106a-363 gene cluster, which has been shown to play an important role in a variety of diseases, including cancer, inflammation, and autoimmune diseases. Our previous study indicated that miR-20b has an inhibitory effect on airway inflammation in asthmatic mice, but the exact mechanism is unclear. In this study, we report that the ratio of CD11b+Ly6G+Ly6Clow cells, but not the amount of CD11b+Ly6C+Ly6G– cells, was increased in the lung tissue of asthmatic mice after intranasal instillation with miR-20b mimics, while Th2-type cytokines (interleukin (IL)-4 and IL-13) were significantly decreased in the bronchoalveolar lavage fluid. In addition, the transcription factor CREB regulated the expression of miR-20b. Our findings suggest that miR-20b can induce the accumulation of myeloid-derived suppressor cells in the lungs of asthmatic mice, which may be a mechanism by which miR-20b inhibits airway inflammation in asthmatic mice. Thus, miR-20b may be used as a target for the effective treatment of asthma in the future.
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Chen S, Liu Y, Niu Y, Xu Y, Zhou Q, Xu X, Wang J, Yu M. Increased abundance of myeloid-derived suppressor cells and Th17 cells in peripheral blood of newly-diagnosed Parkinson's disease patients. Neurosci Lett 2017; 648:21-25. [PMID: 28359932 DOI: 10.1016/j.neulet.2017.03.045] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Revised: 03/21/2017] [Accepted: 03/26/2017] [Indexed: 01/10/2023]
Abstract
Parkinson's disease (PD) is a neurodegenerative disease that is often associated with corresponding neuroinflammation. In the present study, flow cytometry was used to detect T-helper 17 (Th17) cells and myeloid-derived suppressor cells (MDSCs) in 18 patients newly diagnosed with PD as well as 18 normal controls. Results showed that Th17 cells and MDSCs were significantly higher in peripheral blood of PD patients compared to controls (P<0.001). Furthermore, there was no correlation between Th17 cells and MDSCs in peripheral blood of PD patients. Our findings suggest that Th17 cells and MDSCs may be important factors related to the occurrence and progression of PD, as well as the development of PD-related neuroinflammation.
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Affiliation(s)
- Siyuan Chen
- Department of Neurology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212001, China
| | - Yueqin Liu
- The Central Laboratory, the Fourth Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212001, China
| | - Yuanyuan Niu
- Department of Neurology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212001, China
| | - Yuhao Xu
- Department of Neurology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212001, China
| | - Qianwen Zhou
- Department of Neurology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212001, China
| | - Xiujian Xu
- Department of Neurology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212001, China
| | - Jia Wang
- Department of Immunology, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu, 212013, China.
| | - Ming Yu
- Department of Neurology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212001, China.
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Mager LF, Wasmer MH, Rau TT, Krebs P. Cytokine-Induced Modulation of Colorectal Cancer. Front Oncol 2016; 6:96. [PMID: 27148488 DOI: 10.3389/fonc.2016.00096] [Citation(s) in RCA: 159] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 04/02/2016] [Indexed: 12/12/2022] Open
Abstract
The emergence of novel immunomodulatory cancer therapies over the last decade, above all immune checkpoint blockade, has significantly advanced tumor treatment. For colorectal cancer (CRC), a novel scoring system based on the immune cell infiltration in tumors has greatly improved disease prognostic evaluation and guidance to more specific therapy. These findings underline the relevance of tumor immunology in the future handling and therapeutic approach of malignant disease. Inflammation can either promote or suppress CRC pathogenesis and inflammatory mediators, mainly cytokines, critically determine the pro- or anti-tumorigenic signals within the tumor environment. Here, we review the current knowledge on the cytokines known to be critically involved in CRC development and illustrate their mechanisms of action. We also highlight similarities and differences between CRC patients and murine models of CRC and point out cytokines with an ambivalent role for intestinal cancer. We also identify some of the future challenges in the field that should be addressed for the development of more effective immunomodulatory therapies.
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Affiliation(s)
- Lukas F Mager
- Institute of Pathology, University of Bern , Bern , Switzerland
| | - Marie-Hélène Wasmer
- Institute of Pathology, University of Bern, Bern, Switzerland; Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - Tilman T Rau
- Institute of Pathology, University of Bern , Bern , Switzerland
| | - Philippe Krebs
- Institute of Pathology, University of Bern , Bern , Switzerland
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Ayala-Fontánez N, Soler DC, McCormick TS. Current knowledge on psoriasis and autoimmune diseases. PSORIASIS-TARGETS AND THERAPY 2016; 6:7-32. [PMID: 29387591 PMCID: PMC5683130 DOI: 10.2147/ptt.s64950] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Psoriasis is a prevalent, chronic inflammatory disease of the skin, mediated by crosstalk between epidermal keratinocytes, dermal vascular cells, and immunocytes such as antigen presenting cells (APCs) and T cells. Exclusive cellular “responsibility” for the induction and maintenance of psoriatic plaques has not been clearly defined. Increased proliferation of keratinocytes and endothelial cells in conjunction with APC/T cell/monocyte/macrophage inflammation leads to the distinct epidermal and vascular hyperplasia that is characteristic of lesional psoriatic skin. Despite the identification of numerous susceptibility loci, no single genetic determinant has been identified as responsible for the induction of psoriasis. Thus, numerous other triggers of disease, such as environmental, microbial and complex cellular interactions must also be considered as participants in the development of this multifactorial disease. Recent advances in therapeutics, especially systemic so-called “biologics” have provided new hope for identifying the critical cellular targets that drive psoriasis pathogenesis. Recent recognition of the numerous co-morbidities and other autoimmune disorders associated with psoriasis, including inflammatory bowel disease, multiple sclerosis, rheumatoid arthritis, and systemic lupus erythematosus suggest common signaling elements and cellular mediators may direct disease pathogenesis. In this review, we discuss common cellular pathways and participants that mediate psoriasis and other autoimmune disorders that share these cellular signaling pathways.
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Affiliation(s)
- Nilmarie Ayala-Fontánez
- Department of Dermatology, Case Western Reserve University, Cleveland, OH, USA.,The Murdough Family Center for Psoriasis, University Hospitals Case Medical Center, Cleveland, OH, USA
| | - David C Soler
- Department of Dermatology, Case Western Reserve University, Cleveland, OH, USA.,The Murdough Family Center for Psoriasis, University Hospitals Case Medical Center, Cleveland, OH, USA
| | - Thomas S McCormick
- Department of Dermatology, Case Western Reserve University, Cleveland, OH, USA.,The Murdough Family Center for Psoriasis, University Hospitals Case Medical Center, Cleveland, OH, USA
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Altered gp130 signalling ameliorates experimental colitis via myeloid cell-specific STAT3 activation and myeloid-derived suppressor cells. Sci Rep 2016; 6:20584. [PMID: 26848037 PMCID: PMC4742831 DOI: 10.1038/srep20584] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 01/07/2016] [Indexed: 02/06/2023] Open
Abstract
STAT3 regulates the expansion of myeloid-derived suppressor cells (MDSCs) during
inflammation, infection and cancer. Hyperactivation of STAT3 in
gp130757F/F mice is associated with protection from experimental
colitis. This study determined mechanisms for this protection and compared this to
mice with myeloid-specific STAT3-deficiency (LysMcre/STAT3flox;
gp130757F/F LysMcre/STAT3flox). Acute and chronic
colitis was induced and colons were removed for histological, mRNA and protein
analysis. Cell populations from spleen, mesenteric lymph node and colon were
analyzed for different myeloid cell populations using flow cytometry. Functions of
MDSCs and LPS-stimulated peritoneal macrophages were further characterized by in
vitro and in vivo assays. Here we show that the resistance to
experimental colitis in gp130757F/F mice is via myeloid-cell specific
STAT3 activation, MDSC expansion and increased production of suppressive and
protective cytokines.
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Wang Y, Tian J, Wang S. The potential therapeutic role of myeloid-derived suppressor cells in autoimmune arthritis. Semin Arthritis Rheum 2016; 45:490-5. [DOI: 10.1016/j.semarthrit.2015.07.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 05/22/2015] [Accepted: 07/08/2015] [Indexed: 12/22/2022]
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Abstract
As the frontiers of immunological research expand, new insights into the pathogenesis of long poorly understood diseases, such as inflammatory bowel disease (IBD), are opening up new possible avenues for treatment. Myeloid-derived cells (i.e., monocytes, macrophages, neutrophils, and dendritic cells), long believed to be effector cells driving the initiation of inflammation, have been increasingly shown to have immunoregulatory effects previously underappreciated. Dysfunction in the immunoregulatory roles of these cells may play a part in the pathogenesis of a subset of patients with IBD. The role of myeloid-derived suppressor cells, initially described in cancer, have been shown to play an important role in the balancing of effector and regulatory T cells in inflammation as well, and their role in IBD is also explored. The potential for future cell-based therapies for IBD is enhanced by the advances being made in the understanding of the innate immune system in the intestine.
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Däbritz J. GM-CSF and the role of myeloid regulatory cells in the pathogenesis and treatment of Crohn's disease. Mol Cell Pediatr 2015; 2:12. [PMID: 26626346 PMCID: PMC4666883 DOI: 10.1186/s40348-015-0024-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 11/20/2015] [Indexed: 12/19/2022] Open
Abstract
Background Intestinal monocytes/macrophages sustain the intestinal immune homeostasis and might be an attractive therapeutic target for the management of inflammatory bowel disease (IBD). Granulocyte macrophage colony-stimulating factor (GM-CSF) exerts beneficial effects on intestinal inflammation and promotes signal transducer and activator of transcription 3 (STAT3)-mediated expansion of myeloid-derived suppressor cells (MDSCs). However, the full action mechanism of GM-CSF, and especially whether monocytes mediate its therapeutic effects in vivo, had not been previously elucidated. Conclusions This review article summarizes recent developments in the immunology of mucosal diseases and describes new aspects of the role of myeloid regulatory cells in IBD and the function of GM-CSF in maintaining the intestinal immune homeostasis in Crohn’s disease (CD). This review article highlights the exploration of stimulating in addition to suppressive therapies for patients with IBD and underpins that myeloid regulatory cells might become a promising novel cell-based therapeutic option.
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Affiliation(s)
- Jan Däbritz
- Present address: Department of Pediatrics, University Hospital Rostock, Ernst-Heydemann-Str. 8, 18057, Rostock, Germany. .,Department of Pediatric Rheumatology and Immunology, University Hospital Münster, Albert-Schweitzer-Campus 1, 48149, Münster, Germany. .,Murdoch Children's Research Institute, The Royal Children's Hospital Melbourne, 50 Flemington Road, Parkville, VIC, 3052, Australia.
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Wei J, Zhang M, Zhou J. Myeloid-derived suppressor cells in major depression patients suppress T-cell responses through the production of reactive oxygen species. Psychiatry Res 2015; 228:695-701. [PMID: 26165964 DOI: 10.1016/j.psychres.2015.06.002] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Revised: 05/30/2015] [Accepted: 06/01/2015] [Indexed: 10/23/2022]
Abstract
Major depression is closely associated with immune dysregulation. Myeloid-derived suppressor cells (MDSCs) are an important suppressor of immune responses. The aim of this study was to evaluate the possible role of MDSCs in major depression patients. We collected peripheral blood mononuclear cells (PBMCs) from 25 major depression patients and 25 healthy donors, and the frequency of MDSCs was determined by flow cytometric analysis. The proportion of MDSCs was increased in the peripheral blood of major depression patients, when compared with healthy controls. Further functional studies revealed that MDSCs from depression patients suppressed T cell function potently. We examined the reactive oxygen species (ROS) content in MDSCs from 6 major depression patients and 6 healthy controls. The ROS content in depression derived MDSCs was significantly elevated, when compared with those from healthy controls. We also examined the arginase activity and NO content in 5 major depression patients and 5 healthy controls, respectively. But no significant changes were detected between two groups. Administration of a ROS inhibitor completely abrogated the suppressive effect of MDSCs on T cells. In conclusion, our study revealed that MDSCs from depression patients suppress T cell reponses in ROS-dependent manner.
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Affiliation(s)
- Jianyang Wei
- Institute of Human Virology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Ming Zhang
- Department of Neurology, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Jie Zhou
- Institute of Human Virology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong, China; Key Laboratory of Tropical Disease Control, Chinese Ministry of Education, Sun Yat-Sen University, Guangzhou, Guangdong, China.
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Shah KH, Shi P, Giani JF, Janjulia T, Bernstein EA, Li Y, Zhao T, Harrison DG, Bernstein KE, Shen XZ. Myeloid Suppressor Cells Accumulate and Regulate Blood Pressure in Hypertension. Circ Res 2015; 117:858-69. [PMID: 26294657 DOI: 10.1161/circresaha.115.306539] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Accepted: 08/20/2015] [Indexed: 01/03/2023]
Abstract
RATIONALE Chronic inflammation is a major contributor to the progressive pathology of hypertension, and T-cell activation is required for the genesis of hypertension. However, the precise role of myeloid cells in this process is unclear. OBJECTIVE To characterize and understand the role of peripheral myeloid cells in the development of hypertension. METHODS AND RESULTS We examined myeloid cells in the periphery of hypertensive mice and found that increased numbers of CD11b(+)Gr1(+) myeloid cells in blood and the spleen are a characteristic of 3 murine models of experimental hypertension (angiotensin II, L-NG-nitroarginine methyl ester, and high salt). These cells express surface markers and transcription factors associated with immaturity and immunosuppression. Also, they produce hydrogen peroxide to suppress T-cell activation. These are characteristics of myeloid-derived suppressor cells (MDSCs). Depletion of hypertensive MDSCs increased blood pressure and renal inflammation. In contrast, adoptive transfer of wild-type MDSCs to hypertensive mice reduced blood pressure, whereas the transfer of nicotinamide adenine dinucleotide phosphate oxidase 2-deficient MDSCs did not. CONCLUSION The accumulation of MDSCs is a characteristic of experimental models of hypertension. MDSCs limit inflammation and the increase of blood pressure through the production of hydrogen peroxide.
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Affiliation(s)
- Kandarp H Shah
- From the Departments of Biomedical Sciences (K.H.S., J.F.G., T.J., E.A.B., T.Z., K.E.B., X.Z.S.), Pathology (K.E.B., X.Z.S.), and Neurology (P.S., Y.L.), Cedars-Sinai Medical Center, Los Angeles, CA; and Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (D.G.H)
| | - Peng Shi
- From the Departments of Biomedical Sciences (K.H.S., J.F.G., T.J., E.A.B., T.Z., K.E.B., X.Z.S.), Pathology (K.E.B., X.Z.S.), and Neurology (P.S., Y.L.), Cedars-Sinai Medical Center, Los Angeles, CA; and Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (D.G.H)
| | - Jorge F Giani
- From the Departments of Biomedical Sciences (K.H.S., J.F.G., T.J., E.A.B., T.Z., K.E.B., X.Z.S.), Pathology (K.E.B., X.Z.S.), and Neurology (P.S., Y.L.), Cedars-Sinai Medical Center, Los Angeles, CA; and Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (D.G.H)
| | - Tea Janjulia
- From the Departments of Biomedical Sciences (K.H.S., J.F.G., T.J., E.A.B., T.Z., K.E.B., X.Z.S.), Pathology (K.E.B., X.Z.S.), and Neurology (P.S., Y.L.), Cedars-Sinai Medical Center, Los Angeles, CA; and Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (D.G.H)
| | - Ellen A Bernstein
- From the Departments of Biomedical Sciences (K.H.S., J.F.G., T.J., E.A.B., T.Z., K.E.B., X.Z.S.), Pathology (K.E.B., X.Z.S.), and Neurology (P.S., Y.L.), Cedars-Sinai Medical Center, Los Angeles, CA; and Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (D.G.H)
| | - You Li
- From the Departments of Biomedical Sciences (K.H.S., J.F.G., T.J., E.A.B., T.Z., K.E.B., X.Z.S.), Pathology (K.E.B., X.Z.S.), and Neurology (P.S., Y.L.), Cedars-Sinai Medical Center, Los Angeles, CA; and Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (D.G.H)
| | - Tuantuan Zhao
- From the Departments of Biomedical Sciences (K.H.S., J.F.G., T.J., E.A.B., T.Z., K.E.B., X.Z.S.), Pathology (K.E.B., X.Z.S.), and Neurology (P.S., Y.L.), Cedars-Sinai Medical Center, Los Angeles, CA; and Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (D.G.H)
| | - David G Harrison
- From the Departments of Biomedical Sciences (K.H.S., J.F.G., T.J., E.A.B., T.Z., K.E.B., X.Z.S.), Pathology (K.E.B., X.Z.S.), and Neurology (P.S., Y.L.), Cedars-Sinai Medical Center, Los Angeles, CA; and Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (D.G.H)
| | - Kenneth E Bernstein
- From the Departments of Biomedical Sciences (K.H.S., J.F.G., T.J., E.A.B., T.Z., K.E.B., X.Z.S.), Pathology (K.E.B., X.Z.S.), and Neurology (P.S., Y.L.), Cedars-Sinai Medical Center, Los Angeles, CA; and Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (D.G.H)
| | - Xiao Z Shen
- From the Departments of Biomedical Sciences (K.H.S., J.F.G., T.J., E.A.B., T.Z., K.E.B., X.Z.S.), Pathology (K.E.B., X.Z.S.), and Neurology (P.S., Y.L.), Cedars-Sinai Medical Center, Los Angeles, CA; and Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (D.G.H).
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Fecal Microbial Transplant After Ileocolic Resection Reduces Ileitis but Restores Colitis in IL-10-/- Mice. Inflamm Bowel Dis 2015; 21:1479-90. [PMID: 26070001 DOI: 10.1097/mib.0000000000000383] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND Ileocolic resection (ICR) is frequently performed for Crohn's disease; however, disease commonly recurs early in the neoterminal ileum. The aim of this study was to use the IL-10(-/-) mouse to determine the effects of ICR on gut microbiome and immune function and if postoperative fecal microbial transplant (FMT) would improve disease. METHODS ICR was performed in 129S1/SvlmJ IL10(-/-) mice followed by FMT using stool from wild-type mice. Sham-transplant mice received their own stool. Stool samples were collected on day 0, day 13 (after ICR), and day 27 (after FMT) for whole metagenome shot-gun sequencing. Mucosal-associated bacteria were quantified with quantitative PCR and visualized by fluorescent in situ hybridization. Tissue cytokines were measured with multiplex arrays and mononuclear phagocyte populations by flow cytometry. RESULTS Surgery induced microbial functional and taxonomic shifts, decreased diversity, and depleted Bacteroidia and Clostridia. ICR mice had reduced colitis but worse ileitis with bacterial overgrowth, increased translocation, and reduction in tissue macrophages. FMT prevented ileitis but restored colitis and allowed for a bloom of γ-proteobacteria. In the colon, ICR and sham transplant were associated with recruitment of tolerogenic dendritic cells, whereas FMT shifted these immune cell subsets to control profiles along with increasing cytokine levels. CONCLUSIONS This study suggests that surgical-induced immune dysfunction and microbial dysbiosis with impaired clearance may be the underlying cause of the early ulcerations found in the ileum of patients with Crohn's disease after ICR. FMT has an immunostimulatory effect on the postoperative intestine, which was beneficial in preventing ileitis, but detrimental in restoring colonic injury after surgery.
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Sido JM, Nagarkatti PS, Nagarkatti M. Δ⁹-Tetrahydrocannabinol attenuates allogeneic host-versus-graft response and delays skin graft rejection through activation of cannabinoid receptor 1 and induction of myeloid-derived suppressor cells. J Leukoc Biol 2015; 98:435-47. [PMID: 26034207 DOI: 10.1189/jlb.3a0115-030rr] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2015] [Accepted: 05/06/2015] [Indexed: 12/18/2022] Open
Abstract
Immune cells have been shown to express cannabinoid receptors and to produce endogenous ligands. Moreover, activation of cannabinoid receptors on immune cells has been shown to trigger potent immunosuppression. Despite such studies, the role of cannabinoids in transplantation, specifically to prevent allograft rejection, has not, to our knowledge, been investigated previously. In the current study, we tested the effect of THC on the suppression of HvGD as well as rejection of skin allografts. To this end, we studied HvGD by injecting H-2(k) splenocytes into H-2(b) mice and analyzing the immune response in the draining ingLNs. THC treatment significantly reduced T cell proliferation and activation in draining LNs of the recipient mice and decreased early stage rejection-indicator cytokines, including IL-2 and IFN-γ. THC treatment also increased the allogeneic skin graft survival. THC treatment in HvGD mice led to induction of MDSCs. Using MDSC depletion studies as well as adoptive transfer experiments, we found that THC-induced MDSCs were necessary for attenuation of HvGD. Additionally, using pharmacological inhibitors of CB1 and CB2 receptors and CB1 and CB2 knockout mice, we found that THC was working preferentially through CB1. Together, our research shows, for the first time to our knowledge, that targeting cannabinoid receptors may provide a novel treatment modality to attenuate HvGD and prevent allograft rejection.
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Affiliation(s)
- Jessica M Sido
- *Department of Pathology, Microbiology, and Immunology, University of South Carolina School of Medicine, Columbia, South Carolina, USA; and William Jennings Bryan Dorn Veterans Affairs Medical Center, Columbia, South Carolina, USA
| | - Prakash S Nagarkatti
- *Department of Pathology, Microbiology, and Immunology, University of South Carolina School of Medicine, Columbia, South Carolina, USA; and William Jennings Bryan Dorn Veterans Affairs Medical Center, Columbia, South Carolina, USA
| | - Mitzi Nagarkatti
- *Department of Pathology, Microbiology, and Immunology, University of South Carolina School of Medicine, Columbia, South Carolina, USA; and William Jennings Bryan Dorn Veterans Affairs Medical Center, Columbia, South Carolina, USA
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Kwak Y, Kim HE, Park SG. Insights into Myeloid-Derived Suppressor Cells in Inflammatory Diseases. Arch Immunol Ther Exp (Warsz) 2015; 63:269-85. [PMID: 25990434 DOI: 10.1007/s00005-015-0342-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Accepted: 05/14/2015] [Indexed: 02/06/2023]
Abstract
Myeloid-derived suppressor cells (MDSCs) are a heterogeneous population of cells involved in immune regulation. This population subdivides into granulocytic MDSCs and monocytic MDSCs, which regulate immune responses via the production of various molecules including reactive oxygen species, nitric oxide, arginase-1, interleukin-10, and transforming growth factor-β. Most studies of MDSCs focused on their role in tumors. MDSCs protect tumor cells from immune responses, and thus the frequency of MDSCs associates with poor prognosis. Many recent studies reported an important role for MDSCs in inflammatory diseases via the regulation of immune cells. In addition, the utilization of MDSCs by infectious pathogens suggests an immune evasion mechanism. Thus, MDSCs are important immune regulators in inflammatory diseases, as well as in tumors. This review focuses on the role of MDSCs in the regulation of inflammation in non-tumor settings.
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Affiliation(s)
- Yewon Kwak
- School of Life Sciences, Gwangju Institute of Science and Technology (GIST), Gwangju, 500-712, Republic of Korea
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Significance of IL-1RA Polymorphism in Iranian Patients with Inflammatory Bowel Disease. Dig Dis Sci 2015; 60:1389-95. [PMID: 25466956 DOI: 10.1007/s10620-014-3457-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2014] [Accepted: 11/20/2014] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND AIM Interleukin (IL)-1 family members play an important role in the pathogenesis of inflammatory bowel disease (IBD). There are conflicting results regarding the association of IL-1 gene cluster single nucleotide polymorphisms (SNPs) with IBD and its clinical features. The aim of this study was to examine IL-1α -889 C/T, IL-1β -511 C/T, IL-1β +3962 C/T, IL-1R Pst-I1970 C/T, and IL-1RA Mspa-I11100 C/T SNPs in Iranian patients. METHODS In this study, SNPs of IL-1 family members were investigated in 75 patients with IBD (40 CD and 35 UC), using polymerase chain reaction with sequence-specific primers method. RESULTS IL-1β -511 CC genotype was significantly less present in UC compared to controls, while IL-1RA Mspa-I11100 CC was significantly associated with both Crohn's disease (CD) and ulcerative colitis (UC). IL-1α -889 TT genotype was more frequently associated with extraintestinal manifestations. A significant association was observed between IL-1β +3962 TT genotype and the disease activity in IBD. IL-1RA Mspa-I11100 CC was significantly less frequent in CD patients who need immunosuppressive therapy. IL-1RA Mspa-I11100 CT was associated with earlier age of onset in IBD, while TT genotype was associated with higher age of onset in IBD. CONCLUSIONS IL-1 SNPs seem to be associated with IBD and could affect the disease severity as well.
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Kim YJ, Chang SY, Ko HJ. Myeloid-derived suppressor cells in inflammatory bowel disease. Intest Res 2015; 13:105-11. [PMID: 25931994 PMCID: PMC4414751 DOI: 10.5217/ir.2015.13.2.105] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Revised: 01/20/2015] [Accepted: 01/21/2015] [Indexed: 12/11/2022] Open
Abstract
Immature myeloid cells, also known as myeloid-derived suppressor cells (MDSCs), include neutrophilic and monocytic myeloid cells, and are found in inflammatory loci and secondary lymphoid organs in mice with intestinal inflammation, inflammatory bowel disease (IBD) patients, and tumor tissues. However, the roles of MDSCs in IBD are not yet well understood, and there are controversies regarding their immunosuppressive functions in IBD. In addition, recent studies have suggested that endoplasmic reticulum (ER) stress in intestinal epithelial cells, especially in Paneth cells, is closely associated with the induction of IBD. However, the ER stress in MDSCs accumulated in the inflamed tissues of IBD patients is not yet fully understood. In the current review, we discuss the presence of accumulated MDSCs in the intestines of IBD patients, and further speculate on their physiological roles in the inflammatory condition with interleukin 17-producing cells, including Th17 cells. In particular, we will discuss the divergent functions of MDSCs in ER stressed intestinal environments, including their pro-inflammatory or immunosuppressive roles, based on the consideration of unfolded protein responses initiated in intestinal epithelial cells by ER stress.
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Affiliation(s)
| | | | - Hyun-Jeong Ko
- College of Pharmacy, Kangwon National University, Chuncheon, Korea
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Lee HJ, Ko JH, Jeong HJ, Ko AY, Kim MK, Wee WR, Yoon SO, Oh JY. Mesenchymal stem/stromal cells protect against autoimmunity via CCL2-dependent recruitment of myeloid-derived suppressor cells. THE JOURNAL OF IMMUNOLOGY 2015; 194:3634-45. [PMID: 25769927 DOI: 10.4049/jimmunol.1402139] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Accepted: 02/13/2015] [Indexed: 02/06/2023]
Abstract
Exogenously administered mesenchymal stem/stromal cells (MSCs) suppress autoimmunity despite transient engraftment. However, the mechanism is unclear. In this study, we report a novel mechanism by which MSCs modulate the immune system by recruiting myeloid-derived suppressor cells in a mouse model of experimental autoimmune uveitis (EAU). Intravenous infusion of MSCs blocked EAU development and reduced Th1 and Th17 responses. Time course analysis revealed an increase of MHC class II(lo)Ly6G(-)Ly6C(hi)CD11b(+) cells in draining lymph nodes by MSCs. These Ly6C(hi)CD11b(+) cells suppressed CD4(+) cell proliferation and Th1/Th17 differentiation and induced CD4(+) cell apoptosis. Adoptive transfer of Ly6C(hi)CD11b(+) cells ameliorated EAU, whereas depletion of Ly6C(hi)CD11b(+) cells abrogated the effects of MSCs. 1.8% of MSCs were present in draining lymph nodes 1 d after infusion, and MSCs with CCL2 knockdown did not increase MHC class II(lo)Ly6G(-)Ly6C(hi)CD11b(+) cells and failed to attenuate EAU. Therefore, our findings demonstrate that MSCs suppress autoimmunity by recruiting myeloid-derived suppressor cells into sites of inflammation in a CCL2-dependent manner.
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Affiliation(s)
- Hyun Ju Lee
- Department of Ophthalmology, Seoul National University Hospital, Seoul 110-744, Korea; Laboratory of Ocular Regenerative Medicine and Immunology, Biomedical Research Institute, Seoul National University Hospital, Seoul 110-744, Korea; and
| | - Jung Hwa Ko
- Department of Ophthalmology, Seoul National University Hospital, Seoul 110-744, Korea; Laboratory of Ocular Regenerative Medicine and Immunology, Biomedical Research Institute, Seoul National University Hospital, Seoul 110-744, Korea; and
| | - Hyun Jeong Jeong
- Department of Ophthalmology, Seoul National University Hospital, Seoul 110-744, Korea; Laboratory of Ocular Regenerative Medicine and Immunology, Biomedical Research Institute, Seoul National University Hospital, Seoul 110-744, Korea; and
| | - Ah Young Ko
- Department of Ophthalmology, Seoul National University Hospital, Seoul 110-744, Korea; Laboratory of Ocular Regenerative Medicine and Immunology, Biomedical Research Institute, Seoul National University Hospital, Seoul 110-744, Korea; and
| | - Mee Kum Kim
- Department of Ophthalmology, Seoul National University Hospital, Seoul 110-744, Korea; Laboratory of Ocular Regenerative Medicine and Immunology, Biomedical Research Institute, Seoul National University Hospital, Seoul 110-744, Korea; and
| | - Won Ryang Wee
- Department of Ophthalmology, Seoul National University Hospital, Seoul 110-744, Korea; Laboratory of Ocular Regenerative Medicine and Immunology, Biomedical Research Institute, Seoul National University Hospital, Seoul 110-744, Korea; and
| | - Sun-Ok Yoon
- Transplantation Research Institute, Seoul National University College of Medicine, Seoul 110-744, Korea
| | - Joo Youn Oh
- Department of Ophthalmology, Seoul National University Hospital, Seoul 110-744, Korea; Laboratory of Ocular Regenerative Medicine and Immunology, Biomedical Research Institute, Seoul National University Hospital, Seoul 110-744, Korea; and
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Wang W, Jiao Z, Duan T, Liu M, Zhu B, Zhang Y, Xu Q, Wang R, Xiong Y, Xu H, Lu L. Functional characterization of myeloid-derived suppressor cell subpopulations during the development of experimental arthritis. Eur J Immunol 2014; 45:464-73. [PMID: 25352399 DOI: 10.1002/eji.201444799] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Revised: 10/05/2014] [Accepted: 10/21/2014] [Indexed: 12/22/2022]
Abstract
Recent evidence indicates the existence of subpopulations of myeloid-derived suppressor cells (MDSCs) with distinct phenotypes and functions. Here, we characterized the role of MDSC subpopulations in the pathogenesis of autoimmune arthritis in a collagen-induced arthritis (CIA) mouse model. The splenic CD11b(+) Gr-1(+) MDSC population expanded in CIA mice, and these cells could be subdivided into polymorphonuclear (PMN) and mononuclear (MO) MDSC subpopulations based on Ly6C and Ly6G expression. During CIA, the proportion of splenic MO-MDSCs was increased in association with the severity of joint inflammation, while PMN-MDSCs were decreased. MO-MDSCs expressed higher levels of surface CD40 and CD86 protein, but lower levels of Il10, Tgfb1, Ccr5, and Cxcr2 mRNA. PMN-MDSCs exhibited a more potent capacity to suppress polyclonal T-cell proliferation in vitro, compared with MO-MDSCs. Moreover, the adoptive transfer of PMN-MDSCs, but not MO-MDSCs, decreased joint inflammation, accompanied by reduced levels of serum cytokine secretion and the frequencies of Th1 and Th17 cells in draining lymph nodes. These results suggest that there could be a shift from potently suppressive PMN-MDSCs to poorly suppressive MO-MDSCs during the development of experimental arthritis, which might reflect the failure of expanded MDSCs to suppress autoimmune arthritis.
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Affiliation(s)
- Wenhong Wang
- Zhenjiang Key Laboratory of Medical Immunology, Department of Laboratory Medicine, Affiliated Hospital of Jiangsu University, Zhenjiang, China; Department of Pathogenic Biology, School of Medical Science and Laboratory Medicine, Jiangsu University, Zhenjiang, China
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Abstract
Chronic inflammation predisposes patients with inflammatory bowel disease to the risk of developing colitis-associated cancer (CAC). Growing evidence strongly suggests that CAC development is multifactorial and is attributed to concurrent, dynamic dysregulations in host immunity, enteric microbiota, and epithelial restitution during the course of chronic inflammation. This article discusses the recent advances in understanding the different forms of CAC that may develop in patients with inflammatory bowel disease and animal models, as well as molecular alterations and other processes that orchestrate the development of CAC.
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Yan C, Du H. Lysosomal acid lipase is critical for myeloid-derived suppressive cell differentiation, development, and homeostasis. World J Immunol 2014; 4:42-51. [DOI: 10.5411/wji.v4.i2.42] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 04/02/2014] [Accepted: 06/18/2014] [Indexed: 02/05/2023] Open
Abstract
Lysosomal acid lipase (LAL) cleaves cholesteryl esters (CE) and triglycerides (TG) to generate cholesterol and free fatty acid in lysosomes of cells. The downstream metabolic products of fatty acids are ligands for activation of peroxisome proliferator-activated receptor gamma (PPARγ). Accumulation of CEs and TGs is resulted from lack of functional LAL in lysosomes of cells, especially in myeloid cells. One characteristic phenotype in LAL knock-out (lal-/-) mice is systemic elevation of myeloid-derived suppressive cells (MDSCs). MDSCs infiltrate into multiple distal organs, alter T cell development, and suppress T cell proliferation and lymphokine production in lal-/- mice, which lead to severe pathogeneses in multiple organs. The gene transcriptional profile analysis in MDSCs from the bone marrow has identified multiple defects responsible for MDSCs malformation and malfunction in lal-/- mice, including G protein signaling, cell cycles, glycolysis metabolism, mitochondrial bioenergetics, mTOR pathway etc. In a separate gene transcriptional profile analysis in the lung of lal-/- mice, matrix metalloproteinase 12 (MMP12) and apoptosis inhibitor 6 (Api6) are highly overexpressed due to lack of ligand synthesis for PPARγ. PPARγ negatively regulates MMP12 and Api6. Blocking the PPAR signaling by overexpression of a dominant negative PPARγ (dnPPARγ) form, or overexpressing MMP12 or Api6 in myeloid or lung epithelial cells in inducible transgenic mouse models results in elevated MDSCs and inflammation-induced tumorigenesis. These studies demonstrate that LAL and its downstream effectors are critical for MDSCs development, differentiation and malfunction.
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Basso D, Zambon CF, Plebani M. Inflammatory bowel diseases: from pathogenesis to laboratory testing. Clin Chem Lab Med 2014; 52:471-81. [DOI: 10.1515/cclm-2013-0588] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Accepted: 09/10/2013] [Indexed: 02/07/2023]
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