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Li W, Chen G, Peng H, Zhang Q, Nie D, Guo T, Zhu Y, Zhang Y, Lin M. Research Progress on Dendritic Cells in Hepatocellular Carcinoma Immune Microenvironments. Biomolecules 2024; 14:1161. [PMID: 39334927 PMCID: PMC11430656 DOI: 10.3390/biom14091161] [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: 07/17/2024] [Revised: 08/29/2024] [Accepted: 09/05/2024] [Indexed: 09/30/2024] Open
Abstract
Dendritic cells (DCs) are antigen-presenting cells that play a crucial role in initiating immune responses by cross-presenting relevant antigens to initial T cells. The activation of DCs is a crucial step in inducing anti-tumor immunity. Upon recognition and uptake of tumor antigens, activated DCs present these antigens to naive T cells, thereby stimulating T cell-mediated immune responses and enhancing their ability to attack tumors. It is particularly noted that DCs are able to cross-present foreign antigens to major histocompatibility complex class I (MHC-I) molecules, prompting CD8+ T cells to proliferate and differentiate into cytotoxic T cells. In the malignant progression of hepatocellular carcinoma (HCC), the inactivation of DCs plays an important role, and the activation of DCs is particularly important in anti-HCC immunotherapy. In this review, we summarize the mechanisms of DCs activation in HCC, the involved regulatory factors and strategies to activate DCs in HCC immunotherapy. It provides a basis for the study of HCC immunotherapy through DCs activation.
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Affiliation(s)
- Wenya Li
- The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou 225300, China
- Graduate School, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Guojie Chen
- The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou 225300, China
- Medical School, Nantong University, Nantong 226019, China
| | - Hailin Peng
- The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou 225300, China
| | - Qingfang Zhang
- The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou 225300, China
| | - Dengyun Nie
- The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou 225300, China
- Graduate School, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Ting Guo
- The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou 225300, China
- Graduate School, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Yinxing Zhu
- The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou 225300, China
| | - Yuhan Zhang
- The First School of Clinical Medicine Southern Medical University, Guangzhou 510515, China
| | - Mei Lin
- The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou 225300, China
- Graduate School, Nanjing University of Chinese Medicine, Nanjing 210023, China
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2
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Rodi M, de Lastic AL, Panagoulias I, Aggeletopoulou I, Kelaidonis K, Matsoukas J, Apostolopoulos V, Mouzaki A. Myelin Oligodendrocyte Glycoprotein (MOG)35-55 Mannan Conjugate Induces Human T-Cell Tolerance and Can Be Used as a Personalized Therapy for Multiple Sclerosis. Int J Mol Sci 2024; 25:6092. [PMID: 38892275 PMCID: PMC11172913 DOI: 10.3390/ijms25116092] [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: 04/24/2024] [Revised: 05/29/2024] [Accepted: 05/30/2024] [Indexed: 06/21/2024] Open
Abstract
We have previously performed preclinical studies with the oxidized mannan-conjugated peptide MOG35-55 (OM-MOG35-55) in vivo (EAE mouse model) and in vitro (human peripheral blood) and demonstrated that OM-MOG35-55 suppresses antigen-specific T cell responses associated with autoimmune demyelination. Based on these results, we developed different types of dendritic cells (DCs) from the peripheral blood monocytes of patients with multiple sclerosis (MS) or healthy controls presenting OM-MOG35-55 or MOG-35-55 to autologous T cells to investigate the tolerogenic potential of OM-MOG35-55 for its possible use in MS therapy. To this end, monocytes were differentiated into different DC types in the presence of IL-4+GM-CSF ± dexamethasone (DEXA) ± vitamin D3 (VITD3). At the end of their differentiation, the DCs were loaded with peptides and co-cultured with T cells +IL-2 for 4 antigen presentation cycles. The phenotypes of the DC and T cell populations were analyzed using flow cytometry and the secreted cytokines using flow cytometry or ELISA. On day 8, the monocytes had converted into DCs expressing the typical markers of mature or immature phenotypes. Co-culture of T cells with all DC types for 4 antigen presentation cycles resulted in an increase in memory CD4+ T cells compared to memory CD8+ T cells and a suppressive shift in secreted cytokines, mainly due to increased TGF-β1 levels. The best tolerogenic effect was obtained when patient CD4+ T cells were co-cultured with VITD3-DCs presenting OM-MOG35-55, resulting in the highest levels of CD4+PD-1+ T cells and CD4+CD25+Foxp3+ Τ cells. In conclusion, the tolerance induction protocols presented in this work demonstrate that OM-MOG35-55 could form the basis for the development of personalized therapeutic vaccines or immunomodulatory treatments for MS.
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Affiliation(s)
- Maria Rodi
- Laboratory of Immunohematology, Medical School, University of Patras, 26500 Patras, Greece; (M.R.); (A.-L.d.L.); (I.P.); (I.A.)
| | - Anne-Lise de Lastic
- Laboratory of Immunohematology, Medical School, University of Patras, 26500 Patras, Greece; (M.R.); (A.-L.d.L.); (I.P.); (I.A.)
| | - Ioannis Panagoulias
- Laboratory of Immunohematology, Medical School, University of Patras, 26500 Patras, Greece; (M.R.); (A.-L.d.L.); (I.P.); (I.A.)
| | - Ioanna Aggeletopoulou
- Laboratory of Immunohematology, Medical School, University of Patras, 26500 Patras, Greece; (M.R.); (A.-L.d.L.); (I.P.); (I.A.)
| | - Kostas Kelaidonis
- NewDrug P.C., Patras Science Park, 26504 Patras, Greece; (K.K.); (J.M.)
| | - John Matsoukas
- NewDrug P.C., Patras Science Park, 26504 Patras, Greece; (K.K.); (J.M.)
- Immunology and Translational Research, Institute for Health and Sport, Victoria University, Melbourne, VIC 3030, Australia;
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, AB T2N1N4, Canada
- Department of Chemistry, University of Patras, 26504 Patras, Greece
| | - Vasso Apostolopoulos
- Immunology and Translational Research, Institute for Health and Sport, Victoria University, Melbourne, VIC 3030, Australia;
- Immunology Program, Australian Institute for Musculoskeletal Science (AIMSS), Melbourne, VIC 3021, Australia
| | - Athanasia Mouzaki
- Laboratory of Immunohematology, Medical School, University of Patras, 26500 Patras, Greece; (M.R.); (A.-L.d.L.); (I.P.); (I.A.)
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3
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Zhang M, Xu W, Yang N, Li Z, Zhou S, Liu X, Wang J, Li H. PCV2 Induced Endothelial Derived IL-8 Affects MoDCs Maturation Mainly via NF-κB Signaling Pathway. Viruses 2024; 16:646. [PMID: 38675986 PMCID: PMC11053600 DOI: 10.3390/v16040646] [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: 02/05/2024] [Revised: 04/16/2024] [Accepted: 04/17/2024] [Indexed: 04/28/2024] Open
Abstract
Porcine circovirus type 2 (PCV2) infection can cause immunosuppressive diseases in pigs. Vascular endothelial cells (VECs), as the target cells for PCV2, play an important role in the immune response and inflammatory regulation. Endothelial IL-8, which is produced by porcine hip artery endothelial cells (PIECs) infected with PCV2, can inhibit the maturation of monocyte-derived dendritic cells (MoDCs). Here, we established a co-culture system of MoDCs and different groups of PIECs to further investigate the PCV2-induced endothelial IL-8 signaling pathway that drives the inhibition of MoDC maturation. The differentially expressed genes related to MoDC maturation were mainly enriched in the NF-κB and JAK2-STAT3 signaling pathways. Both the NF-κB related factor RELA and JAK2-STAT3 signaling pathway related factors (IL2RA, JAK, STAT2, STAT5, IL23A, IL7, etc.) decreased significantly in the IL-8 up-regulated group, and increased significantly in the down-regulated group. The expression of NF-κB p65 in the IL-8 up-regulated group was reduced significantly, and the expression of IκBα was increased significantly. Nuclear translocation of NF-κB p65 was inhibited, while the nuclear translocation of p-STAT3 was increased in MoDCs in the PCV2-induced endothelial IL-8 group. The results of treatment with NF-κB signaling pathway inhibitors showed that the maturation of MoDCs was inhibited and the expression of IL-12 and GM-CSF at mRNA level were lower. Inhibition of the JAK2-STAT3 signaling pathway had no significant effect on maturation, and the expression of IL-12 and GM-CSF at mRNA level produced no significant change. In summary, the NF-κB signaling pathway is the main signaling pathway of MoDC maturation, and is inhibited by the PCV2-induced up-regulation of endothelial-derived IL-8.
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Affiliation(s)
| | | | | | | | | | | | - Jianfang Wang
- College of Animal Science and Technology, Beijing University of Agriculture, No. 7 Beinong Road, Beijing 102206, China; (M.Z.); (W.X.); (N.Y.); (Z.L.); (S.Z.); (X.L.)
| | - Huanrong Li
- College of Animal Science and Technology, Beijing University of Agriculture, No. 7 Beinong Road, Beijing 102206, China; (M.Z.); (W.X.); (N.Y.); (Z.L.); (S.Z.); (X.L.)
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Challa NL, Sarkar A, Kapettu S, Phanithi PB, Chakrabarti P, Parsa KVL, Misra P. TGS1/PIMT regulates pro-inflammatory macrophage mediated paracrine insulin resistance: Crosstalk between macrophages and skeletal muscle cells. Biochim Biophys Acta Mol Basis Dis 2024; 1870:166878. [PMID: 37673359 DOI: 10.1016/j.bbadis.2023.166878] [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: 05/02/2023] [Revised: 08/30/2023] [Accepted: 09/01/2023] [Indexed: 09/08/2023]
Abstract
Macrophage-driven chronic low-grade inflammatory response is intimately associated with pathogenesis of insulin resistance and type 2 diabetes (T2D). However, the molecular basis for skewing of pro-inflammatory macrophage is still elusive. Here, we describe the mechanism and significance of TGS1/PIMT (PRIP-Interacting protein with Methyl Transferase domain) in regulating macrophage activation and polarization and its impact on the development of insulin resistance in skeletal muscle cells. We show altered expression of TGS1 in M1 polarized cultured macrophages, bone marrow-derived (BMDM) and adipose tissue macrophages. Moreover, in High Fat Diet (HFD)-fed mice enhanced TGS1 expression is predominantly localized to the nucleus of adipose tissue macrophages suggesting its potential functional role. Gain and loss of TGS1 expression in macrophage further established its role in the secretion of pro-inflammatory mediators. Mechanistically, TGS1 controls the transcription of numerous genes linked to inflammation by forming a complex with Histone Acetyl Transferase (HAT)-containing transcriptional co-activators CBP and p300. Functionally, TGS1 mediated macrophage inflammatory response induces the development of insulin resistance in skeletal muscle cells and adipocytes. Our findings thus demonstrate an unexpected contribution of TGS1 in the regulation of macrophage mediated inflammation and insulin resistance highlighting that TGS1 antagonism could be a promising therapeutic target for the management of inflammation and insulin resistance in T2D.
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Affiliation(s)
- Naga Lakshmi Challa
- Centre for Innovation in Molecular and Pharmaceutical Sciences (CIMPS), Dr. Reddy's Institute of Life sciences, University of Hyderabad Campus, Hyderabad 500046, Telangana, India; Department of Cell and Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education (MAHE), Manipal 576104, Karnataka, India; Registered as a PhD student with MAHE, Manipal, India
| | - Ankita Sarkar
- Division of Cell Biology and Physiology, CSIR-Indian Institute of Chemical Biology, Kolkata 700032, West Bengal, India
| | - Satyamoorthy Kapettu
- Department of Cell and Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education (MAHE), Manipal 576104, Karnataka, India
| | - Prakash Babu Phanithi
- Department of Biotechnology and Bioinformatics, University of Hyderabad, Hyderabad 500046, Telangana, India
| | - Partha Chakrabarti
- Division of Cell Biology and Physiology, CSIR-Indian Institute of Chemical Biology, Kolkata 700032, West Bengal, India.
| | - Kishore V L Parsa
- Centre for Innovation in Molecular and Pharmaceutical Sciences (CIMPS), Dr. Reddy's Institute of Life sciences, University of Hyderabad Campus, Hyderabad 500046, Telangana, India.
| | - Parimal Misra
- Centre for Innovation in Molecular and Pharmaceutical Sciences (CIMPS), Dr. Reddy's Institute of Life sciences, University of Hyderabad Campus, Hyderabad 500046, Telangana, India.
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Lee CT, Lin KD, Hsieh CF, Wang JY. SGLT2 Inhibitor Canagliflozin Alleviates High Glucose-Induced Inflammatory Toxicity in BV-2 Microglia. Biomedicines 2023; 12:36. [PMID: 38255143 PMCID: PMC10813070 DOI: 10.3390/biomedicines12010036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 12/15/2023] [Accepted: 12/19/2023] [Indexed: 01/24/2024] Open
Abstract
Patients with diabetes mellitus can experience hyperglycemia, which affects brain function and produces cognitive impairment or neurodegeneration. Neuroinflammation is an important cause of cognitive dysfunction. Sodium-glucose cotransporter 2 (SGLT2) inhibitors are antihyperglycemic agents that reportedly possess anti-inflammatory properties and may produce beneficial cognitive effects. We hypothesized that SGLT2 inhibitors alleviate hyperglycemia-related inflammation in brain immune cells. Cultured BV-2 microglia were exposed to high glucose (HG) in the absence or presence of SGLT2 inhibitors including canagliflozin (Cana), dapagliflozin (Dapa), empagliflozin (Empa), and ertugliflozin (Ertu). Afterward, we evaluated the cytotoxic and inflammatory responses by specific biochemical assays. Treatments with non-toxic Cana or Dapa, but not Empa or Ertu, inhibited proliferation without cell death. Only Cana rescued BV-2 microglia from HG-induced cytotoxicity, including apoptosis or autophagic degradation. None of SGLT2 inhibitors affected the HG-stimulated induction of stress proteins HO-1 and HSP70. Also, compared to the other three SGLT2 inhibitors, Cana was better at inhibiting HG-induced oxidative/inflammatory stress, as evidenced by its ability to repress proinflammatory factors (e.g., oxygen free radicals, iNOS, NLRP3, IL-1β, and TNF-α) other than COX-2. Cana's action to alleviate HG insults was mediated not by altering SGLT2 protein expression, but by reducing HG-stimulated signaling activities of NFκB, JNK, p38, and PI3K/Akt pathways. Particularly, Cana imitated the effects of NFκB inhibitor on HG-induced iNOS and COX-2. Of the four SGLT2 inhibitors, Cana provided BV-2 microglia with the best protection against HG-induced inflammatory toxicity. Thus, Cana may help to reduce innate neuroimmune damage caused by hyperglycemia.
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Affiliation(s)
- Ching-Tien Lee
- Department of Medical and Healthcare Business, Hsin-Sheng College of Medical Care and Management, Taoyuan 32544, Taiwan;
| | | | - Cheng-Fang Hsieh
- Division of Geriatrics and Gerontology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan;
| | - Jiz-Yuh Wang
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Neuroscience Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Research Center for Precision Environmental Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan
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Long H, Wu Z. Immunoregulatory effects of Huaier (Trametes robiniophila Murr) and relevant clinical applications. Front Immunol 2023; 14:1147098. [PMID: 37449208 PMCID: PMC10337589 DOI: 10.3389/fimmu.2023.1147098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 06/12/2023] [Indexed: 07/18/2023] Open
Abstract
Huaier (Trametes robiniophila Murr) is a medicinal fungus of traditional Chinese medicine with more than 1000 years of history of clinical application. Its remarkable anticancer activities has led to its application in treating diverse malignancies. In recent years, the immunomodulatory effects of Huaier have been uncovered and proved to be beneficial in a plethora of immune-related diseases including cancer, nephropathy, asthma, etc. In this review, we comprehensively summarized the active components of Huaier, its regulatory activities on multifaceted aspects of the immune system, its application in various clinical settings as well as toxicologic evidence. Based on currently available literature, Huaier possesses broad-spectrum regulatory activities on various components of the innate and adaptive immune system, including macrophages, dendritic cells, natural killer cells, T and B lymphocytes, etc. Versatile immunologic reactions are under the regulation of Huaier from expression of damage-associated molecular patterns, immune cell activation and maturation to cell proliferation, differentiation, antibody production, expression of cytokines and chemokines and terminal intracellular signal transduction. Moreover, some modulatory activities of Huaier might be context-dependent, typically promoting the restoration toward normal physiological status. With excellent efficacy and minimal side effects, we foresee more extensive application of Huaier for treating immune-related disorders.
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Affiliation(s)
- Hongrong Long
- Department of cardiac function, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Zhongcai Wu
- Division of Nephrology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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Zang H, Siddiqui M, Gummuluru S, Wong WW, Reinhard BM. Ganglioside-Functionalized Nanoparticles for Chimeric Antigen Receptor T-Cell Activation at the Immunological Synapse. ACS NANO 2022; 16:18408-18420. [PMID: 36282488 PMCID: PMC9815837 DOI: 10.1021/acsnano.2c06516] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Chimeric Antigen Receptor (CAR) T cell therapy has proven to be an effective strategy against hematological malignancies but persistence and activity against solid tumors must be further improved. One emerging strategy for enhancing efficacy is based on directing CAR T cells to antigen presenting cells (APCs). Activation of CAR T cells at the immunological synapse (IS) formed between APC and T cell is thought to promote strong, persistent antigen-specific T cell-mediated immune responses but requires integration of CAR ligands into the APC/T-cell interface. Here, we demonstrate that CAR ligand functionalized, lipid-coated, biodegradable polymer nanoparticles (NPs) that contain the ganglioside GM3 (GM3-NPs) bind to CD169 (Siglec-1)-expressing APCs and localize to the cell contact site between APCs and CAR T cells upon initiation of cell conjugates. The CD169+ APC/CAR T-cell interface is characterized by a strong optical colocalization of GM3-NPs and CARs, enrichment of F-actin, and recruitment of ZAP-70, indicative of integration of GM3-NPs into a functional IS. Ligands associated with GM3-NPs localized to the APC/T-cell contact site remain accessible to CARs and result in robust T-cell activation. Overall, this work identifies GM3-NPs as a potential antigen delivery platform for active targeting of CD169 expressing APCs and enhancement of CAR T-cell activation at the NP-containing IS.
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Affiliation(s)
- Han Zang
- Departments of Chemistry and The Photonics Center, Boston University, Boston, MA, 02215, United States
| | - Menna Siddiqui
- Department of Biomedical Engineering and Biological Design Center, Boston University, Boston, MA, 02215, USA
| | - Suryaram Gummuluru
- Department of Microbiology, Boston University School of Medicine, Boston, MA, 02118, United States
| | - Wilson W. Wong
- Department of Biomedical Engineering and Biological Design Center, Boston University, Boston, MA, 02215, USA
| | - Björn M. Reinhard
- Departments of Chemistry and The Photonics Center, Boston University, Boston, MA, 02215, United States
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Chen M, Liu Y, Yang Y, Qiu Y, Wang Z, Li X, Zhang W. Emerging roles of activating transcription factor (ATF) family members in tumourigenesis and immunity: Implications in cancer immunotherapy. Genes Dis 2022; 9:981-999. [PMID: 35685455 PMCID: PMC9170601 DOI: 10.1016/j.gendis.2021.04.008] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 04/20/2021] [Accepted: 04/26/2021] [Indexed: 12/12/2022] Open
Abstract
Activating transcription factors, ATFs, are a group of bZIP transcription factors that act as homodimers or heterodimers with a range of other bZIP factors. In general, ATFs respond to extracellular signals, indicating their important roles in maintaining homeostasis. The ATF family includes ATF1, ATF2, ATF3, ATF4, ATF5, ATF6, and ATF7. Consistent with the diversity of cellular processes reported to be regulated by ATFs, the functions of ATFs are also diverse. ATFs play an important role in cell proliferation, apoptosis, differentiation and inflammation-related pathological processes. The expression and phosphorylation status of ATFs are also related to neurodegenerative diseases and polycystic kidney disease. Various miRNAs target ATFs to regulate cancer proliferation, apoptosis, autophagy, sensitivity and resistance to radiotherapy and chemotherapy. Moreover, ATFs are necessary to maintain cell redox homeostasis. Therefore, deepening our understanding of the regulation and function of ATFs will provide insights into the basic regulatory mechanisms that influence how cells integrate extracellular and intracellular signals into genomic responses through transcription factors. Under pathological conditions, especially in cancer biology and response to treatment, the characterization of ATF dysfunction is important for understanding how to therapeutically utilize ATF2 or other pathways controlled by transcription factors. In this review, we will demonstrate how ATF1, ATF2, ATF3, ATF4, ATF5, ATF6, and ATF7 function in promoting or suppressing cancer development and identify their roles in tumour immunotherapy.
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Affiliation(s)
| | | | | | | | | | | | - Wenling Zhang
- Corresponding author. Department of Medical Laboratory Science, the Third Xiangya Hospital, Central South University, Tongzipo Road 172, Yuelu District, Changsha, Hunan 410013, PR China.
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Sipka A, Weichhart T, Mann S. Pharmacological inhibition of the mTOR pathway alters phenotype and cytokine expression in bovine monocyte-derived dendritic cells. Vet Immunol Immunopathol 2022; 249:110441. [PMID: 35597229 DOI: 10.1016/j.vetimm.2022.110441] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 05/05/2022] [Accepted: 05/13/2022] [Indexed: 01/20/2023]
Abstract
Epidemiological studies have long demonstrated the association of nutrient status and immune dysfunction in dairy cows. Postpartum dairy cows experiencing a nutrient deficit show a propensity for increased inflammatory response, decreased pathogen clearance, and increased incidence of infectious disease. Studies in cows and other species show that the nutrient sensing mechanistic target of rapamycin (mTOR) signaling pathway could be one potential causal pathway connecting the deficit in nutrient availability and the heightened inflammatory response. Our objective was to investigate the effects of pharmacological mTOR pathway inhibition on phenotype and cytokine expression of bovine monocyte derived dendritic cells (moDC). We differentiated CD14+ monocytes from dairy cows (n = 14) into moDC in the presence or absence of first- or second-generation mTOR inhibitor rapamycin and PP242 (both 100 nM), respectively. On day seven cells were matured with E. coli lipopolysaccharide (LPS, 100 ng/mL) or left unstimulated to represent naïve moDC. Surface expression of CD14, CD40, CD80, and MHCII was measured via flow cytometry. We measured mRNA expression of IL10, IL12A, IL12B, and TNFα by rt-qPCR, and protein concentrations of IL-10 and TFN-α in cell culture supernatants with a bead-based multiplex assay. Cultures from ten cows successfully developed the moDC phenotype in culture without inhibitors, defined as increased surface expression of CD40, CD80, and MHCII compared with naïve moDC. Only data from these cows were considered for the results on effects of mTOR inhibitors. In naïve and mature moDC mTOR inhibition increased MHCII expression compared to controls. In mature moDC, in addition to MHCII, CD80 expression was increased compared with untreated LPS-stimulated controls. Expression of IL12A mRNA was upregulated in mature, mTOR inhibited moDC compared with untreated controls. In cell culture supernatants mTOR inhibition reduced IL-10 and increased TNF-α concentrations in naïve and mature moDCs compared with untreated controls. Overall rapamycin had a more consistent effect on altering phenotype and cytokine expression of moDC than PP242. In summary we observed an increased expression of co-stimulatory molecules and antigen presentation potential in mature moDC differentiated under mTOR inhibition, and a cytokine pattern that would potentially favor a Th1 type response. This study provides novel data indicating a role for mTOR signaling in bovine moDC phenotype and mediator profile. This proof-of-concept study demonstrates the role of the mTOR pathway in shaping the bovine immune response and may help to provide mechanistic insight and opportunities for modulation of the immune response during the nutrient deficit of early lactation.
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Affiliation(s)
- Anja Sipka
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA.
| | - Thomas Weichhart
- Center for Pathobiochemistry and Genetics, Medical University of Vienna, Währinger Straße 10, 1090 Vienna, Austria
| | - Sabine Mann
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
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Zhong YB, Kang ZP, Wang MX, Long J, Wang HY, Huang JQ, Wei SY, Zhou W, Zhao HM, Liu DY. Curcumin ameliorated dextran sulfate sodium-induced colitis via regulating the homeostasis of DCs and Treg and improving the composition of the gut microbiota. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104716] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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11
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Martínez Leo EE, Peñafiel AM, Hernández Escalante VM, Cabrera Araujo ZM. Ultra-processed diet, systemic oxidative stress, and breach of immunologic tolerance. Nutrition 2021; 91-92:111419. [PMID: 34399404 DOI: 10.1016/j.nut.2021.111419] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 06/24/2021] [Accepted: 07/13/2021] [Indexed: 12/28/2022]
Abstract
In recent years, consumption of ultra-processed food around the world has been increasing. The nutritional profile of an ultra-processed diet is associated with the development of cellular alterations that lead to oxidative stress. The chronic prooxidative state leads to an environment that influences the proliferation, apoptosis, and signaling pathways of immune cells. Likewise, the decrease in the transcription factor NRF2, owing to exacerbated production of reactive oxygen species, leads to changes in immune function and response to infections. This review aims to analyze the connection between an ultra-processed diet, systemic oxidative stress, and immune tolerance, as a contribution to the scientific evidence on the impact of oxidative stress on health and the possible risk of infections-an important consideration in the association of eating pattern and the immune response.
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Affiliation(s)
- Edwin E Martínez Leo
- Research Department, University Latino, Merida, Mexico; School of Medicine, Autonomous University of Yucatan, Merida, Mexico.
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12
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Jin X, Zhang W, Wang Y, Liu J, Hao F, Li Y, Tian M, Shu H, Dong J, Feng Y, Wei M. Pyruvate Kinase M2 Promotes the Activation of Dendritic Cells by Enhancing IL-12p35 Expression. Cell Rep 2021; 31:107690. [PMID: 32460017 DOI: 10.1016/j.celrep.2020.107690] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 03/06/2020] [Accepted: 05/01/2020] [Indexed: 12/30/2022] Open
Abstract
Dendritic cells (DCs) play a central role in both innate and adaptive immunity. Emerging evidence has demonstrated metabolic reprogramming during DC activation. However, how DC activation is linked with metabolic reprogramming remains unclear. Here we show that pyruvate kinase M2 (PKM2), the rate-limiting enzyme in the last step of glycolysis, is critical for LPS-induced DC activation. Upon DC activation, JNK signaling stimulated p300 association with PKM2 for the acetylation of lysine 433, a classic posttranslational modification critical for PKM2 destabilization and nuclear re-localization. Subsequently, nuclear PKM2 partnered with c-Rel to enhance Il12p35 expression, which is important for Th1 cell differentiation. Meanwhile, decreased enzymatic activity of PKM2 due to detetramerization facilitated glycolysis and fatty acid synthesis, helping DCs meet their need for biomacromolecules. Together, we provide evidence for metabolic control of DC activation and offer insights into aberrant immune responses due to dysregulated Th1 functions.
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Affiliation(s)
- Xin Jin
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, 5268 Renmin Street, Changchun, Jilin, 130024, People's Republic of China
| | - Wenxia Zhang
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, 5268 Renmin Street, Changchun, Jilin, 130024, People's Republic of China
| | - Yang Wang
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, 5268 Renmin Street, Changchun, Jilin, 130024, People's Republic of China
| | - Jia Liu
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, 5268 Renmin Street, Changchun, Jilin, 130024, People's Republic of China
| | - Fengqi Hao
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, 5268 Renmin Street, Changchun, Jilin, 130024, People's Republic of China
| | - Yunlong Li
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, 5268 Renmin Street, Changchun, Jilin, 130024, People's Republic of China
| | - Miaomiao Tian
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, 5268 Renmin Street, Changchun, Jilin, 130024, People's Republic of China
| | - Hengyao Shu
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, 5268 Renmin Street, Changchun, Jilin, 130024, People's Republic of China
| | - Jiaxin Dong
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, 5268 Renmin Street, Changchun, Jilin, 130024, People's Republic of China
| | - Yunpeng Feng
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, 5268 Renmin Street, Changchun, Jilin, 130024, People's Republic of China.
| | - Min Wei
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, 5268 Renmin Street, Changchun, Jilin, 130024, People's Republic of China.
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13
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Maza PAMA, Lee JH, Kim YS, Sun GM, Sung YJ, Ponomarenko LP, Stonik VA, Ryu M, Kwak JY. Inotodiol From Inonotus obliquus Chaga Mushroom Induces Atypical Maturation in Dendritic Cells. Front Immunol 2021; 12:650841. [PMID: 33777049 PMCID: PMC7994266 DOI: 10.3389/fimmu.2021.650841] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 02/25/2021] [Indexed: 12/29/2022] Open
Abstract
Dendritic cells (DCs) have the ability to stimulate naïve T cells that coordinate subsequent adaptive response toward an inflammatory response or tolerance depending on the DC differentiation level. Inotodiol, a lanostane triterpenoid found in Inonotus obliquus (wild Chaga mushroom), is a natural compound with a wide range of biological activities. In this study, we investigated whether inotodiol promotes the maturation of bone marrow-derived DCs (BMDCs) and inotodiol-treated BMDCs induce T cell activation. Inotodiol increased the expression of surface maturation markers, including MHC-I, MHC-II, CD86, and CD40, on BMDCs without affecting the production of various cytokines, including TNF-α and IL-12p40 in these cells. T cells primed with inotodiol-treated BMDCs proliferated and produced IL-2, without producing other cytokines, including IL-12p40 and IFN-γ. Injection of inotodiol into mice induced maturation of splenic DCs and IL-2 production, and the administration of inotodiol and inotodiol-treated BMDCs induced the proliferation of adoptively transferred CD8+ T cells in vivo. The phosphatidylinositol-3-kinase inhibitor wortmannin abrogated the upregulation of Akt phosphorylation and CD86 and MHC-II expression induced by inotodiol. However, inotodiol failed to induce phosphorylation of the IκB kinase and degradation of IκB-α, and increased expression of CD86 induced by inotodiol was not blocked by an IκB kinase inhibitor. These results suggest that inotodiol induces a characteristic type of maturation in DCs through phosphatidylinositol-3-kinase activation independent of NF-κB, and inotodiol-treated DCs enhance T cell proliferation and IL-2 secretion.
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Affiliation(s)
- Perry Ayn Mayson A Maza
- Department of Pharmacology, School of Medicine, Ajou University, Suwon, South Korea.,Department of Biomedical Sciences, The Graduate School, Ajou University, Suwon, South Korea
| | - Ji-Hyun Lee
- Department of Pharmacology, School of Medicine, Ajou University, Suwon, South Korea.,Department of Biomedical Sciences, The Graduate School, Ajou University, Suwon, South Korea
| | - Yong-Su Kim
- Department of Pharmacology, School of Medicine, Ajou University, Suwon, South Korea.,Department of Biomedical Sciences, The Graduate School, Ajou University, Suwon, South Korea
| | - Gyu-Min Sun
- Department of Pharmacology, School of Medicine, Ajou University, Suwon, South Korea.,Department of Biomedical Sciences, The Graduate School, Ajou University, Suwon, South Korea
| | - Youn-Joo Sung
- Department of Pharmacology, School of Medicine, Ajou University, Suwon, South Korea.,Department of Biomedical Sciences, The Graduate School, Ajou University, Suwon, South Korea
| | - Ludmila P Ponomarenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia
| | - Valentine A Stonik
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia
| | - Minsook Ryu
- Department of Allergy, School of Medicine, Ajou University, Suwon, South Korea
| | - Jong-Young Kwak
- Department of Pharmacology, School of Medicine, Ajou University, Suwon, South Korea.,Immune Network Pioneer Research Center, Ajou University, Suwon, South Korea.,3D Immune System Imaging Core Center, Ajou University, Suwon, South Korea
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14
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Hernandez-Franco JF, Mosley YYC, Franco J, Ragland D, Yao Y, HogenEsch H. Effective and Safe Stimulation of Humoral and Cell-Mediated Immunity by Intradermal Immunization with a Cyclic Dinucleotide/Nanoparticle Combination Adjuvant. THE JOURNAL OF IMMUNOLOGY 2020; 206:700-711. [PMID: 33380496 DOI: 10.4049/jimmunol.2000703] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 12/03/2020] [Indexed: 01/01/2023]
Abstract
Intradermal (ID) immunization is an attractive route of vaccination because it targets tissue rich in dendritic cells, has dose-sparing potential, and allows needle-free delivery. However, few adjuvants are effective, nonreactogenic, and compatible with needle-free delivery devices. In this study, we demonstrate that a combination adjuvant composed of cyclic-di-AMP (cdAMP) and the plant-derived nanoparticle adjuvant Nano-11 significantly enhanced the immune response to ID-injected vaccines in mice and pigs with minimal local reaction at the injection site. The cdAMP/Nano-11 combination adjuvant increased Ag uptake by lymph node-resident and migratory skin dendritic cell subpopulations, including Langerhans cells. ID immunization with cdAMP/Nano-11 expanded the population of germinal center B cells and follicular helper T cells in the draining lymph node and Ag-specific Th1 and Th17 cells in the spleen. It elicited an enhanced immune response with a significant increase of IgG1 and IgG2a responses in mice at a reduced dose compared with i.m. immunization. An increased IgG response was observed following needle-free ID immunization of pigs. Nano-11 and cdAMP demonstrated a strong synergistic interaction, as shown in the activation of mouse, human, and porcine APC, with increased expression of costimulatory molecules and secretion of TNF and IL-1β. The combination adjuvant induced robust activation of both NF-κB and IFN regulatory factor signaling pathways and the NLRP3 inflammasome. We conclude that the combination of Nano-11 and cdAMP is a promising adjuvant for ID delivery of vaccines that supports a balanced immune response.
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Affiliation(s)
| | - Yung-Yi C Mosley
- Department of Comparative Pathobiology, Purdue University, West Lafayette, IN 47907
| | - Jackeline Franco
- Department of Comparative Pathobiology, Purdue University, West Lafayette, IN 47907
| | - Darryl Ragland
- Department of Veterinary Clinical Sciences, Purdue University, West Lafayette, IN 47907
| | - Yuan Yao
- Department of Food Science, Purdue University, West Lafayette, IN 47907; and
| | - Harm HogenEsch
- Department of Comparative Pathobiology, Purdue University, West Lafayette, IN 47907; .,Purdue Institute for Immunology, Inflammation and Infectious Diseases (PI4D), West Lafayette, IN 47907
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15
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Jebali J, Zakraoui O, Aissaoui D, Abdelkafi-Koubaa Z, Srairi-Abid N, Marrakchi N, Essafi-Benkhadir K. Lebecetin, a snake venom C-type lectin protein, modulates LPS-induced inflammatory cytokine production in human THP-1-derived macrophages. Toxicon 2020; 187:144-150. [PMID: 32918926 DOI: 10.1016/j.toxicon.2020.09.001] [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: 07/10/2020] [Revised: 08/11/2020] [Accepted: 09/07/2020] [Indexed: 10/25/2022]
Abstract
The excessive production of inflammatory mediators results in an overactive immune response leading to the worsening of various human diseases. Thus, there is a still need to identify molecules able to regulate the inflammatory response. Lebecetin, a C-type lectin protein isolated from Macrovipera lebetina snake venom, was previously characterized as a platelet aggregation inhibitor and antitumor active biomolecule. In the present work, we investigated its effect on the production of some cytokines linked to inflammatory response and the underlying mechanisms in lipopolysaccharide (LPS)-induced THP1 macrophages. Interestingly, we found that lebecetin reduced the levels of the pro-inflammatory cytokines TNF-α, IL-6, and IL-8 while it partially increased LPS-induced secretion of the immunomodulatory cytokine IL-10. Furthermore, this modulatory effect was accompanied by decreased activation of ERK1/2, p38, AKT kinases and NF-κB along with reduced expression of αvβ3 integrin. Thus, this study highlights the promising role of lebecetin as a natural biomolecule that could manage the inflammatory response involved in the development and progression of inflammatory diseases.
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Affiliation(s)
- Jed Jebali
- Institut Pasteur de Tunis, LR11IPT08/LR16IPT08 Laboratoire des Venins et Molécules Thérapeutiques, 1002, Tunis, Tunisia; Université de Tunis El Manar, 1068, Tunis, Tunisia.
| | - Ons Zakraoui
- Institut Pasteur de Tunis, LR11IPT04/LR16IPT04 Laboratoire d'Epidémiologie Moléculaire et de Pathologie Expérimentale Appliquée Aux Maladies Infectieuses, 1002, Tunis, Tunisia; Université de Tunis El Manar, 1068, Tunis, Tunisia
| | - Dorra Aissaoui
- Institut Pasteur de Tunis, LR11IPT08/LR16IPT08 Laboratoire des Venins et Molécules Thérapeutiques, 1002, Tunis, Tunisia; Université de Tunis El Manar, 1068, Tunis, Tunisia
| | - Zaineb Abdelkafi-Koubaa
- Institut Pasteur de Tunis, LR11IPT08/LR16IPT08 Laboratoire des Venins et Molécules Thérapeutiques, 1002, Tunis, Tunisia; Université de Tunis El Manar, 1068, Tunis, Tunisia
| | - Najet Srairi-Abid
- Institut Pasteur de Tunis, LR11IPT08/LR16IPT08 Laboratoire des Venins et Molécules Thérapeutiques, 1002, Tunis, Tunisia; Université de Tunis El Manar, 1068, Tunis, Tunisia
| | - Naziha Marrakchi
- Institut Pasteur de Tunis, LR11IPT08/LR16IPT08 Laboratoire des Venins et Molécules Thérapeutiques, 1002, Tunis, Tunisia; Université de Tunis El Manar, 1068, Tunis, Tunisia; Faculté de Médecine de Tunis, Tunis, Tunisia
| | - Khadija Essafi-Benkhadir
- Institut Pasteur de Tunis, LR11IPT04/LR16IPT04 Laboratoire d'Epidémiologie Moléculaire et de Pathologie Expérimentale Appliquée Aux Maladies Infectieuses, 1002, Tunis, Tunisia; Université de Tunis El Manar, 1068, Tunis, Tunisia.
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16
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Pan J, Jiang Z, Wu D, Yang C, Wang Z, Huang J. Huaier Extractum Promotes Dendritic Cells Maturation and Favors them to Induce Th1 Immune Response: One of the Mechanisms Underlying Its Anti-Tumor Activity. Integr Cancer Ther 2020; 19:1534735420946830. [PMID: 33054422 PMCID: PMC7570295 DOI: 10.1177/1534735420946830] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Huaier, a sandy beige mushroom with anti-tumor effects, has been applied into Traditional Chinese Medicine for more than 1600 years. Previous studies showed that Huaier exerted its anti-tumor effects not only by direct action on tumor cells, but also indirectly by modulation of immune function. In the present study, we found that Huaier treatment significantly repressed tumor growth in mice with 4T1 breast cancer and resulted in significant accumulation of CD4+ T cells and mature dendritic cells (DCs) in the tumor microenvironment. In vitro experiments demonstrated that Huaier treatment promoted both DC2.4 and bone marrow derived DCs (BMDCs) to express costimulatory molecules, enhance production of IL-1β and IL-12p70, while it inhibited their phagocytic activities, suggesting that Huaier treatment promotes maturation of DCs. Furthermore, we found Huaier-treated DCs profoundly stimulated proliferation of alloreactive CD4+ T cells and drove them to differentiate into Th1 subset. Expression of PI3K, Akt, p-Akt, JNK, and p-JNK was up-regulated, while p-p38 MAPK was down-regulated in Huaier-treated BMDCs, suggesting that Huaier promotes maturation of DCs with potent ability to activate Th1 immune response via modulation of MAPK and PI3K/Akt signaling pathways. Our findings provide further evidence for the mechanisms underlying the anti-tumor activity of Huaier.
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Affiliation(s)
- Jun Pan
- Key Laboratory of Tumor Microenvironment and Immune Therapy of Zhejiang Province, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P. R. China.,Cancer Institute (Key Laboratory of Cancer Prevention & Intervention, National Ministry of Education), Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P. R. China.,Department of Breast Surgery, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P. R. China
| | - Zhou Jiang
- Key Laboratory of Tumor Microenvironment and Immune Therapy of Zhejiang Province, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P. R. China.,Cancer Institute (Key Laboratory of Cancer Prevention & Intervention, National Ministry of Education), Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P. R. China.,Department of Breast Surgery, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P. R. China
| | - Dang Wu
- Key Laboratory of Tumor Microenvironment and Immune Therapy of Zhejiang Province, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P. R. China.,Department of Radiation Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P. R. China
| | - Chenghui Yang
- Key Laboratory of Tumor Microenvironment and Immune Therapy of Zhejiang Province, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P. R. China.,Cancer Institute (Key Laboratory of Cancer Prevention & Intervention, National Ministry of Education), Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P. R. China.,Department of Breast Surgery, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P. R. China
| | - Zhen Wang
- Key Laboratory of Tumor Microenvironment and Immune Therapy of Zhejiang Province, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P. R. China.,Cancer Institute (Key Laboratory of Cancer Prevention & Intervention, National Ministry of Education), Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P. R. China.,Department of Breast Surgery, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P. R. China
| | - Jian Huang
- Key Laboratory of Tumor Microenvironment and Immune Therapy of Zhejiang Province, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P. R. China.,Cancer Institute (Key Laboratory of Cancer Prevention & Intervention, National Ministry of Education), Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P. R. China.,Department of Breast Surgery, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P. R. China
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17
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Sears JD, Waldron KJ, Wei J, Chang CH. Targeting metabolism to reverse T-cell exhaustion in chronic viral infections. Immunology 2020; 162:135-144. [PMID: 32681647 DOI: 10.1111/imm.13238] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 06/24/2020] [Accepted: 06/28/2020] [Indexed: 12/28/2022] Open
Abstract
CD8 T-cells are an essential component of the adaptive immune response accountable for the clearance of virus-infected cells via cytotoxic effector functions. Maintaining a specific metabolic profile is necessary for these T-cells to sustain their effector functions and clear pathogens. When CD8 T-cells are activated via T-cell receptor recognition of viral antigen, they transition from a naïve to an effector state and eventually to a memory phenotype, and their metabolic profiles shift as the cells differentiate to accomidate different metabolic demands. However, in the context of particular chronic viral infections (CVIs), CD8 T-cells can become metabolically dysfunctional in a state known as T-cell exhaustion. In this state, CD8 T-cells exhibit reduced effector functions and are unable to properly control pathogens. Clearing these chronic infections becomes progressively difficult as increasing numbers of the effector T-cells become exhausted. Hence, reversal of this dysfunctional metabolic phenotype is vital when considering potential treatments of these infections and offers the opportunity for novel strategies for the development of therapies against CVIs. In this review we explore research implicating alteration of the metabolic state as a means to reverse CD8 T-cell exhaustion in CVIs. These findings indicate that strategies targeting dysfunctional CD8 T-cell metabolism could prove to be a promising option for successfully treating CVIs.
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Affiliation(s)
| | | | - Jian Wei
- The Jackson Laboratory, Bar Harbor, ME, USA
| | - Chih-Hao Chang
- The Jackson Laboratory, Bar Harbor, ME, USA.,Graduate School of Biomedical Sciences and Engineering, University of Maine, Orono, ME, USA.,Graduate School of Biomedical Sciences, Tufts University School of Medicine, Boston, MA, USA
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18
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TonEBP in dendritic cells mediates pro-inflammatory maturation and Th1/Th17 responses. Cell Death Dis 2020; 11:421. [PMID: 32499518 PMCID: PMC7272407 DOI: 10.1038/s41419-020-2632-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 05/19/2020] [Accepted: 05/21/2020] [Indexed: 12/29/2022]
Abstract
Dendritic cells (DCs) are potent antigen-presenting cells that link the innate and adaptive immune responses; as such they play pivotal roles in initiation and progression of rheumatoid arthritis (RA). Here, we report that the tonicity-responsive enhancer-binding protein (TonEBP or NFAT5), a Rel family protein involved in the pathogenesis of autoimmune disease and inflammation, is required for maturation and function of DCs. Myeloid cell-specific TonEBP deletion reduces disease severity in a murine model of collagen-induced arthritis; it also inhibits maturation of DCs and differentiation of pathogenic Th1 and Th17 cells in vivo. Upon stimulation by TLR4, TonEBP promotes surface expression of major histocompatibility complex class II and co-stimulatory molecules via p38 mitogen-activated protein kinase. This is followed by DC-mediated differentiation of pro-inflammatory Th1 and Th17 cells. Taken together, these findings provide mechanistic basis for the pathogenic role of TonEBP in RA and possibly other autoimmune diseases.
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19
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Yu B, Bai J, Shi J, Shen J, Guo X, Liu Y, Ge G, Lin J, Tao Y, Yang H, Xu Y, Qu Q, Geng D. MiR-106b inhibition suppresses inflammatory bone destruction of wear debris-induced periprosthetic osteolysis in rats. J Cell Mol Med 2020; 24:7490-7503. [PMID: 32485091 PMCID: PMC7339204 DOI: 10.1111/jcmm.15376] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 04/10/2020] [Accepted: 04/22/2020] [Indexed: 12/14/2022] Open
Abstract
Aseptic loosening caused by periprosthetic osteolysis (PPO) is the main reason for the primary artificial joint replacement. Inhibition of inflammatory osteolysis has become the main target of drug therapy for prosthesis loosening. MiR‐106b is a newly discovered miRNA that plays an important role in tumour biology, inflammation and the regulation of bone mass. In this study, we analysed the in vivo effect of miR‐106b on wear debris‐induced PPO. A rat implant loosening model was established. The rats were then administrated a lentivirus‐mediated miR‐106b inhibitor, miR‐106b mimics or an equivalent volume of PBS by tail vein injection. The expression levels of miR‐106b were analysed by real‐time PCR. Morphological changes in the distal femurs were assessed via micro‐CT and histopathological analysis, and cytokine expression levels were examined via immunohistochemical staining and ELISA. The results showed that treatment with the miR‐106b inhibitor markedly suppressed the expression of miR‐106b in distal femur and alleviated titanium particle‐induced osteolysis and bone loss. Moreover, the miR‐106b inhibitor decreased TRAP‐positive cell numbers and suppressed osteoclast formation, in addition to promoting the activity of osteoblasts and increasing bone formation. MiR‐106b inhibition also significantly regulated macrophage polarization and decreased the inflammatory response as compared to the control group. Furthermore, miR‐106b inhibition blocked the activation of the PTEN/PI3K/AKT and NF‐κB signalling pathways. Our findings indicated that miR‐106b inhibition suppresses wear particles‐induced osteolysis and bone destruction and thus may serve as a potential therapy for PPO and aseptic loosening.
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Affiliation(s)
- Binqing Yu
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Jiaxiang Bai
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Jian Shi
- Department of Pharmacy, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Jining Shen
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Xiaobin Guo
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Yu Liu
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Gaoran Ge
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Jiayi Lin
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Yunxia Tao
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Huilin Yang
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Yaozeng Xu
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Qiuxia Qu
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Dechun Geng
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, China
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20
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Rodríguez-Fernández JL, Criado-García O. The Chemokine Receptor CCR7 Uses Distinct Signaling Modules With Biased Functionality to Regulate Dendritic Cells. Front Immunol 2020; 11:528. [PMID: 32351499 PMCID: PMC7174648 DOI: 10.3389/fimmu.2020.00528] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 03/09/2020] [Indexed: 12/22/2022] Open
Abstract
Chemotaxis is a molecular mechanism that confers leukocytes the ability to detect gradients of chemoattractants. Chemokine receptors are well-known regulators of chemotaxis in leukocytes; however, they can regulate several other activities in these cells. This information has been often neglected, probably due to the paramount role of chemotaxis in the immune system and in biology. Therefore, the experimental data available on the mechanisms used by chemokine receptors to regulate other functions of leukocytes is sparse. The results obtained in the study of the chemokine receptor CCR7 in dendritic cells (DCs) provide interesting information on this issue. CCR7 guides the DCs from the peripheral tissues to the lymph nodes, where these cells control T cell activation. CCR7 can regulate DC chemotaxis, survival, migratory speed, cytoarchitecture, and endocytosis. Biochemical and functional analyses show: first, that CCR7 uses in DCs the PI3K/Akt pathway to control survival, the MAPK pathway to control chemotaxis, and the RhoA pathways to regulate actin dynamics, which in turn controls migratory speed, cytoarchitecture, and endocytosis; second, that these three signaling pathways behave as modules with a high degree of independence; and third, that although each one of these routes can regulate several functions in different settings, CCR7 promotes in DCs a functional bias in each pathway. The data uncover an interesting mechanism used by CCR7 to regulate the DCs, entailing multifunctional signaling pathways organized in modules with biased functionality. A similar mechanism could be used by other chemoattractant receptors to regulate the functions of leukocytes.
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Affiliation(s)
- José Luis Rodríguez-Fernández
- Centro de Investigaciones Biológicas Margarita Salas, Consejo Superior de Investigaciones Científicas, Madrid, Spain
| | - Olga Criado-García
- Centro de Investigaciones Biológicas Margarita Salas, Consejo Superior de Investigaciones Científicas, Madrid, Spain
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21
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Baldin AV, Savvateeva LV, Bazhin AV, Zamyatnin AA. Dendritic Cells in Anticancer Vaccination: Rationale for Ex Vivo Loading or In Vivo Targeting. Cancers (Basel) 2020; 12:cancers12030590. [PMID: 32150821 PMCID: PMC7139354 DOI: 10.3390/cancers12030590] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 02/29/2020] [Accepted: 03/02/2020] [Indexed: 12/16/2022] Open
Abstract
Dendritic cells (DCs) have shown great potential as a component or target in the landscape of cancer immunotherapy. Different in vivo and ex vivo strategies of DC vaccine generation with different outcomes have been proposed. Numerous clinical trials have demonstrated their efficacy and safety in cancer patients. However, there is no consensus regarding which DC-based vaccine generation method is preferable. A problem of result comparison between trials in which different DC-loading or -targeting approaches have been applied remains. The employment of different DC generation and maturation methods, antigens and administration routes from trial to trial also limits the objective comparison of DC vaccines. In the present review, we discuss different methods of DC vaccine generation. We conclude that standardized trial designs, treatment settings and outcome assessment criteria will help to determine which DC vaccine generation approach should be applied in certain cancer cases. This will result in a reduction in alternatives in the selection of preferable DC-based vaccine tactics in patient. Moreover, it has become clear that the application of a DC vaccine alone is not sufficient and combination immunotherapy with recent advances, such as immune checkpoint inhibitors, should be employed to achieve a better clinical response and outcome.
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Affiliation(s)
- Alexey V. Baldin
- Institute of Molecular Medicine, Sechenov First Moscow State Medical University, 119991 Moscow, Russia; (A.V.B.); (L.V.S.)
| | - Lyudmila V. Savvateeva
- Institute of Molecular Medicine, Sechenov First Moscow State Medical University, 119991 Moscow, Russia; (A.V.B.); (L.V.S.)
| | - Alexandr V. Bazhin
- Department of General, Visceral and Transplant Surgery, Ludwig-Maximilians University of Munich, 81377 Munich, Germany;
- German Cancer Consortium (DKTK), Partner Site Munich, 80336 Munich, Germany
| | - Andrey A. Zamyatnin
- Institute of Molecular Medicine, Sechenov First Moscow State Medical University, 119991 Moscow, Russia; (A.V.B.); (L.V.S.)
- Belozersky Institute of Physico-Chemical Biology, Department of Cell Signaling, Lomonosov Moscow State University, 119991 Moscow, Russia
- Correspondence: ; Tel.: +74-956-229-843
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Shao S, Cui D, Ma C, Chen P, Zhou B, Tao R, Wang J. Transcriptome profiling of tolerogenic dendritic cells conditioned with dual mTOR kinase inhibitor, AZD8055. Int Immunopharmacol 2020; 81:106241. [PMID: 32058927 DOI: 10.1016/j.intimp.2020.106241] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 01/07/2020] [Accepted: 01/21/2020] [Indexed: 01/16/2023]
Abstract
Dendritic cells (DCs) can initiate and regulate adaptive immunity depending on their maturation status. Many pharmacological and genetic means have been used in the generation of immature/tolerogenic DCs. However, the key factors controlling DCs tolerogenicity remain obscure. In this work, we demonstrated that AZD8055, an ATP-competitive inhibitor of mammalian target of rapamycin (mTOR), could also lead to a tolerogenic DC phenotype from several lines of evidence, such as suppression of T cell proliferation, promoting the generation of Tregs, and inducing allogeneic T cell apoptosis. Further studies using RNA-seq method identified 430, 1172 and 1436 differentially expressed genes (DEGs) between AZD-DCs vs. Control-DCs, LPS-DCs vs. Control-DCs, and AZD-DCs vs. LPS-DCs, respectively. The 5 most differentially expressed transcripts identified by RNA-seq expression profiles were validated by quantitative RT-PCR assays. NF-κB, p38MAPK, the ribosome and PPAR signaling pathways may be involved in the induction of tolerogenic DCs by AZD8055. Functional annotation showed some genes like MGL2, Cadherin-1, 4-1BB, RhoB and Pdpn, were quite different between AZD-DCs and Control-DCs/LPS-DCs, which might be related to the tolerogenic properties of AZD-DCs. Our work provided the potential underlying molecular mechanisms involved in the generation of tolerogenic DCs. Further functional characterization of individual target gene in DC tolerogenicity will help to develop novel therapeutic modalities in circumstances like transplant tolerance induction and autoimmunity.
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Affiliation(s)
- Su Shao
- Department of General Surgery, Chunan 1st People's Hospital, Hangzhou, China
| | - Di Cui
- Center for Clinical Medical Research, Affiliated Zhejiang Provincial People's Hospital, Hangzhou Medical School, Hangzhou, China
| | - Chenyang Ma
- Center for Clinical Medical Research, Affiliated Zhejiang Provincial People's Hospital, Hangzhou Medical School, Hangzhou, China
| | - Ping Chen
- Center for Clinical Medical Research, Affiliated Zhejiang Provincial People's Hospital, Hangzhou Medical School, Hangzhou, China; Department of Gynecology, Shaoxing 2nd People's Hospital, Shaoxing, China
| | - Bing Zhou
- Center for Clinical Medical Research, Affiliated Zhejiang Provincial People's Hospital, Hangzhou Medical School, Hangzhou, China; Department of Cardiothoracic Surgery, Affiliated Zhejiang Provincial People's Hospital, Hangzhou Medical School, Hangzhou, China
| | - Ran Tao
- Center for Clinical Medical Research, Affiliated Zhejiang Provincial People's Hospital, Hangzhou Medical School, Hangzhou, China; Department of Hepatobiliary-Pancreatic Surgery, Affiliated Zhejiang Provincial People's Hospital, Hangzhou Medical School, Hangzhou, China.
| | - Jianjun Wang
- Department of General Surgery, Chunan 1st People's Hospital, Hangzhou, China.
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Liu J, Zhong X, He Z, Zhang J, Bai J, Liu G, Liang Y, Ya L, Qin X. Erythromycin Suppresses the Cigarette Smoke Extract-Exposed Dendritic Cell-Mediated Polarization of CD4 + T Cells into Th17 Cells. J Immunol Res 2020; 2020:1387952. [PMID: 32411785 PMCID: PMC7201779 DOI: 10.1155/2020/1387952] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Revised: 12/24/2019] [Accepted: 01/03/2020] [Indexed: 11/18/2022] Open
Abstract
Cigarette smoke is a major effector of chronic obstructive pulmonary disease (COPD), and Th17 cells and dendritic cells (DCs) involve in the pathogenesis of COPD. Previous studies have demonstrated the anti-inflammatory effects of macrolides. However, the effects of macrolides on the cigarette smoke extract- (CSE-) induced immune response are unclear. Accordingly, in this study, we evaluated the effects of erythromycin (EM) on CSE-exposed DCs polarizing naïve CD4+ T cells into Th17 cells. DCs were generated from bone marrow-derived mononuclear cells isolated from male BALB/c mice and divided into five groups: control DC group, CSE-exposed DC group, CD40-antibody-blocked CSE-exposed DC group, and EM-treated CSE-exposed DC group. The function of polarizing CD4+ T cells into Th17 cells induced by all four groups of DCs was assayed based on the mixed lymphocyte reaction (MLR) of naïve CD4+ T cells. CD40 expression in DCs in the CSE-exposed group increased significantly compared with that in the control group (P < 0.05). The Th17 cells in the CSE-exposed DC/MLR group increased significantly compared with those in the control DC/MLR group (P < 0.05). Moreover, Th17 cells in the CD40-blocked CSE-exposed DC/MLR group and EM-treated CSE-exposed DC/MLR group were reduced compared with those in the CSE-exposed DC/MLR group (P < 0.05). Thus, these findings suggested that EM suppressed the CSE-exposed DC-mediated polarization of CD4+ T cells into Th17 cells and that this effect may be mediated through inhibition of the CD40/CD40L pathway.
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Affiliation(s)
- Jifeng Liu
- Department of Respiratory Disease, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Xiaoning Zhong
- Department of Respiratory Disease, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Zhiyi He
- Department of Respiratory Disease, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Jianquan Zhang
- Department of Respiratory Disease, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Jing Bai
- Department of Respiratory Disease, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Guangnan Liu
- Department of Respiratory Disease, Second Affiliated Hospital of Guangxi Medical University, Nanning 530007, China
| | - Yi Liang
- Department of Respiratory Disease, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Leilei Ya
- Department of Respiratory Disease, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Xianglin Qin
- Department of Respiratory Disease, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
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24
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Yang M, Zhang Z, Chen J, Xu M, Huang J, Wang M, Li W, Wan X, Yuen MF, Luo X, Xi D, Ning Q. Soluble fibrinogen-like protein 2 promotes the growth of hepatocellular carcinoma via attenuating dendritic cell-mediated cytotoxic T cell activity. J Exp Clin Cancer Res 2019; 38:351. [PMID: 31409352 PMCID: PMC6693134 DOI: 10.1186/s13046-019-1326-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 07/15/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Soluble fibrinogen-like protein 2 (sFGL2), a secretory protein expressed by regulatory T cells (Tregs) with immunosuppressive activity, is highly expressed in both the peripheral blood and tumor tissue of patients with hepatocellular carcinoma (HCC); however, sFGL2 function in HCC remains largely unknown. Here, we elucidated the potential role of sFGL2 in HCC progression. METHODS T cells, dendritic cells (DCs), and related cytokines in the tumor microenvironment were comparatively analyzed in BALB/c and C57BL/6 mice bearing transplanted hepatomas harboring Fgl2-knockout or receiving sFGL2-antibody treatment. Additionally, the effects of sFGL2 on DCs and T cells were evaluated in vivo and ex vivo. RESULTS The growth of both subcutaneously and orthotopically transplanted hepatomas was inhibited in Fgl2-knockout mice and those treated with the sFGL2 antibody, respectively, as compared with controls. Moreover, sFGL2 depletion enhanced the proportion and cytotoxicity of cytotoxic T cells, promoted DC maturation, and improved DC activity to proliferate T cells in the tumor microenvironment. Furthermore, we detected lower levels of interleukin (IL)-35 in both types of transplanted hepatomas and higher level of IL-6 in orthotopically transplanted hepatomas following sFGL2 depletion. Mechanistically, we found that sFGL2 impaired bone-marrow-derived DC (BMDCs) function by inhibiting phosphorylation of Akt, nuclear factor-kappaB, cAMP response element binding protein, and p38 and downregulating the expression of major histocompatibility complex II, CD40, CD80, CD86, and CD83 on BMDCs in vitro. CONCLUSIONS Our data suggest that sFGL2 promotes hepatoma growth by attenuating DC activity and subsequent CD8+ T cell cytotoxicity, suggesting sFGL2 as a novel potential therapeutic target for HCC treatment.
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MESH Headings
- Animals
- Antibodies, Monoclonal/pharmacology
- Biomarkers
- Carcinoma, Hepatocellular/genetics
- Carcinoma, Hepatocellular/immunology
- Carcinoma, Hepatocellular/mortality
- Carcinoma, Hepatocellular/pathology
- Cell Line, Tumor
- Cytokines/metabolism
- Cytotoxicity, Immunologic/drug effects
- Dendritic Cells/immunology
- Dendritic Cells/metabolism
- Disease Models, Animal
- Female
- Fibrinogen/antagonists & inhibitors
- Fibrinogen/genetics
- Fibrinogen/metabolism
- Fibrinogen/pharmacology
- Heterografts
- Humans
- Immunophenotyping
- Liver Neoplasms/genetics
- Liver Neoplasms/immunology
- Liver Neoplasms/mortality
- Liver Neoplasms/pathology
- Mice
- Mice, Knockout
- Phosphorylation
- Proto-Oncogene Proteins c-akt/metabolism
- Signal Transduction/drug effects
- T-Lymphocytes, Cytotoxic/immunology
- T-Lymphocytes, Cytotoxic/metabolism
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Affiliation(s)
- Muyang Yang
- Institute of Infectious Disease, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
| | - Zhongwei Zhang
- Institute of Infectious Disease, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
| | - Jiajia Chen
- Institute of Infectious Disease, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
| | - Mengying Xu
- Institute of Infectious Disease, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
| | - Jiaquan Huang
- Institute of Infectious Disease, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
- Department of Infectious Disease, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
| | - Ming Wang
- Institute of Infectious Disease, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
- Department of Infectious Disease, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
| | - Weina Li
- Institute of Infectious Disease, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
- Department of Infectious Disease, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
| | - Xiaoyang Wan
- Institute of Infectious Disease, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
| | - Man-Fung Yuen
- Department of Medicine, the University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Xiaoping Luo
- Department of Pediatrics, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dong Xi
- Institute of Infectious Disease, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
| | - Qin Ning
- Institute of Infectious Disease, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
- Department of Infectious Disease, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
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25
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Zhang F, Zhang Y, Yang T, Ye ZQ, Tian J, Fang HR, Han JJ, Wang ZZ, Li X. Scopoletin Suppresses Activation of Dendritic Cells and Pathogenesis of Experimental Autoimmune Encephalomyelitis by Inhibiting NF-κB Signaling. Front Pharmacol 2019; 10:863. [PMID: 31427972 PMCID: PMC6688631 DOI: 10.3389/fphar.2019.00863] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 07/08/2019] [Indexed: 12/20/2022] Open
Abstract
Scopoletin, a phenolic coumarin derived from many medical or edible plants, is involved in various pharmacological functions. In the present study, we showed that Scopoletin effectively ameliorated experimental autoimmune encephalomyelitis (EAE), an animal model of multiple sclerosis (MS), through novel regulatory mechanisms involving inhibition of NF-κB activity in dendritic cells (DCs). Scopoletin treatment significantly improved the severity of the disease and prominently decreased inflammation and demyelination of central nervous system (CNS) in EAE mice. Disease alleviation correlated with the downregulation of major histocompatibility complex (MHC) class II, CD80 and CD86, expressed on DCs of CNS or spleens, and the infiltration and polarization of encephalitogenic Th1/Th17 cells. Consistent with the in vivo data, Scopoletin-treated, bone marrow-derived dendritic cells (BM-DCs) exhibited reduced expression of MHC class II and costimulatory molecules (e.g., CD80 and CD86) and reduced NF-κB phosphorylation. These findings, for the first time, demonstrated the ability of Scopoletin to impair DC activation, downregulating pathogenic Th1/Th17 inflammatory cell responses and, eventually, reducing EAE severity. Our study demonstrates new evidence that natural products derived from medical or edible plants, such as Scopoletin, will be valuable in developing a novel therapeutic agent for MS in the future.
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Affiliation(s)
- Fei Zhang
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Yuan Zhang
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Ting Yang
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Ze-Qing Ye
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Jing Tian
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Hai-Rong Fang
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Juan-Juan Han
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Zhe-Zhi Wang
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Xing Li
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, China
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26
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Yu C, Liu X, Yang J, Zhang M, Jin H, Ma X, Shi H. Combination of Immunotherapy With Targeted Therapy: Theory and Practice in Metastatic Melanoma. Front Immunol 2019; 10:990. [PMID: 31134073 PMCID: PMC6513976 DOI: 10.3389/fimmu.2019.00990] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 04/16/2019] [Indexed: 02/05/2023] Open
Abstract
Metastatic melanoma is the most aggressive and obstinate skin cancer with poor prognosis. Variant novel applicable regimens have emerged during the past decades intensively, while the most profound approaches are oncogene-targeted therapy and T-lymphocyte mediated immunotherapy. Although targeted therapies generated remarkable and rapid clinical responses in the majority of patients, acquired resistance was developed promptly within months leading to tumor relapse. By contrast, immunotherapies elicited long-term tumor regression. However, the overall response rate was limited. In view of the above, either targeted therapy or immunotherapy cannot elicit durable clinical responses in large range of patients. Interestingly, the advantages and limitations of these regimens happened to be complementary. An increasing number of preclinical studies and clinical trials proved a synergistic antitumor effect with the combination of targeted therapy and immunotherapy, implying a promising prospect for the treatment of metastatic melanoma. In order to achieve a better therapeutic effectiveness and reduce toxicity in patients, great efforts need to be made to illuminate multifaceted interplay between targeted therapy and immunotherapy.
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Affiliation(s)
- Chune Yu
- Laboratory of Tumor Targeted and Immune Therapy, Clinical Research Center for Breast, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Xiaowei Liu
- Laboratory of Tumor Targeted and Immune Therapy, Clinical Research Center for Breast, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Jiqiao Yang
- Laboratory of Tumor Targeted and Immune Therapy, Clinical Research Center for Breast, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Min Zhang
- Laboratory of Tumor Targeted and Immune Therapy, Clinical Research Center for Breast, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Hongyu Jin
- Department of Liver Surgery, Liver Transplantation Center, West China Hospital, Sichuan University, Chengdu, China
| | - Xuelei Ma
- Laboratory of Tumor Targeted and Immune Therapy, Clinical Research Center for Breast, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China.,Department of Biotherapy, Cancer Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Hubing Shi
- Laboratory of Tumor Targeted and Immune Therapy, Clinical Research Center for Breast, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
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27
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Orlova EG, Shirshev SV, Loginova OA. Mechanisms of Leptin and Ghrelin Action on Maturation and Functions of Dendritic Cells. BIOCHEMISTRY (MOSCOW) 2019; 84:1-10. [PMID: 30927520 DOI: 10.1134/s0006297919010012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Molecular mechanisms of the immunomodulatory effects of leptin and ghrelin in concentrations typical for pregnancy on the maturation and functional activity of dendritic cells (DCs) generated from the peripheral blood monocytes of women are investigated. The presence of leptin during DC maturation did not affect the levels of CD83+CD1c+, CD86+CD1c+, and HLA-DR+CD1c+ DCs, but increased the amount and the activity of the enzyme indoleamine 2,3-dioxygenase (IDO). Cell culturing in the presence of ghrelin or combination of leptin and ghrelin reduced the percentage of CD86+CD1c+ DCs but did not affect the levels of CD83+CD1c+ and HLA-DR+CD1c+ DCs. In addition, ghrelin reduced the number of IDO molecules without affecting its activity. Simultaneous presence of leptin and ghrelin increased induced IDO activity without affecting the amount of the enzyme in DCs. The effects of leptin and ghrelin on the investigated functions of DCs in some cases correlated with high levels of cAMP. New mechanisms for leptin and ghrelin regulation of tolerogenic functions of DCs in pregnancy are proposed.
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Affiliation(s)
- E G Orlova
- Perm Federal Research Center, Institute of Ecology and Genetics of Microorganisms, Ural Branch of the Russian Academy of Sciences, Perm, 614081, Russia.
| | - S V Shirshev
- Perm Federal Research Center, Institute of Ecology and Genetics of Microorganisms, Ural Branch of the Russian Academy of Sciences, Perm, 614081, Russia
| | - O A Loginova
- Perm Federal Research Center, Institute of Ecology and Genetics of Microorganisms, Ural Branch of the Russian Academy of Sciences, Perm, 614081, Russia
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28
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Wang Q, Wu L, Hasan MW, Lu M, Wang W, Yan R, Xu L, Song X, Li X. Hepatocellular carcinoma-associated antigen 59 of Haemonchus contortus modulates the functions of PBMCs and the differentiation and maturation of monocyte-derived dendritic cells of goats in vitro. Parasit Vectors 2019; 12:105. [PMID: 30871600 PMCID: PMC6416944 DOI: 10.1186/s13071-019-3375-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 03/05/2019] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Hepatocellular carcinoma-associated antigen 59 (HCA59), which is one of the most important excretory/secretory products of Haemonchus contortus (HcESPs), is known to have antigenic functions. However, its immunomodulatory effects on host cells are poorly understood. METHODS Here, we cloned the HCA59 gene and expressed the recombinant protein of HCA59 (rHCA59). Binding activities of rHCA59 to goat peripheral blood mononuclear cells (PBMCs) and dendritic cells (DCs) were checked by immunofluorescence assay (IFA) and the immunoregulatory effects of rHCA59 on cytokine secretions, cell migration, cell proliferation, nitric oxide production, and changes in expression of genes in related pathways were observed by co-incubation of rHCA59 with goat PBMCs and DCs. Monocyte phagocytosis and characterization of goat blood DC subsets were detected by flow cytometry. RESULTS The IFA results revealed that rHCA59 could bind to PBMCs and DCs. Treatment of PBMCs with rHCA59 significantly increased cellular proliferation and NO production in a dose-dependent manner, while cell migration was vigorously blocked. Treatment with rHCA59 significantly suppressed monocytes phagocytosis. The quantity of surface marker CD80 on DCs increased significantly after rHCA59 treatment. In addition, the expression of genes included in the WNT pathway was related to the differentiation and maturation of DCs, and the production of IL-10 and IL-17 produced by PBMCs was altered. CONCLUSIONS Our findings illustrated that rHCA59 could enhance host immune responses by regulating the functions of goat PBMCs and DCs, which would benefit our understanding of HCA59 from parasitic nematodes contributing to the mechanism of parasitic immune evasion.
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Affiliation(s)
- QiangQiang Wang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, PR China
| | - LingYan Wu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, PR China
| | - Muhammad Waqqas Hasan
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, PR China
| | - MingMin Lu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, PR China
| | - WenJuan Wang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, PR China
| | - RuoFeng Yan
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, PR China
| | - LiXin Xu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, PR China
| | - XiaoKai Song
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, PR China
| | - XiangRui Li
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, PR China.
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29
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D-2-Hydroxyglutarate and L-2-Hydroxyglutarate Inhibit IL-12 Secretion by Human Monocyte-Derived Dendritic Cells. Int J Mol Sci 2019; 20:ijms20030742. [PMID: 30744183 PMCID: PMC6387367 DOI: 10.3390/ijms20030742] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 02/01/2019] [Accepted: 02/05/2019] [Indexed: 12/22/2022] Open
Abstract
Mutations in isocitrate dehydrogenase (IDH) or a reduced expression of L-2-hydroxyglutarate (HG)-dehydrogenase result in accumulation of D-2-HG or L-2-HG, respectively, in tumor tissues. D-2-HG and L-2-HG have been shown to affect T-cell differentiation and activation; however, effects on human myeloid cells have not been investigated so far. In this study we analyzed the impact of D-2-HG and L-2-HG on activation and maturation of human monocyte-derived dendritic cells (DCs). 2-HG was taken up by DCs and had no impact on cell viability but diminished CD83 expression after Lipopolysaccharides (LPS) stimulation. Furthermore, D-2-HG and L-2-HG significantly reduced IL-12 secretion but had no impact on other cytokines such as IL-6, IL-10 or TNF. Gene expression analyses of the IL-12 subunits p35/IL-12A and p40/IL-12B in DCs revealed decreased expression of both subunits. Signaling pathways involved in LPS-induced cytokine expression (NFkB, Akt, p38) were not altered by D-2-HG. However, 2-HG reprogrammed LPS-induced metabolic changes in DCs and increased oxygen consumption. Addition of the ATP synthase inhibitor oligomycin to DC cultures increased IL-12 secretion and was able to partially revert the effect of 2-HG. Our data show that both enantiomers of 2-HG can limit activation of DCs in the tumor environment.
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30
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Guindi C, Cloutier A, Gaudreau S, Zerif E, McDonald PP, Tatsiy O, Asselin C, Dupuis G, Gris D, Amrani AA. Role of the p38 MAPK/C/EBPβ Pathway in the Regulation of Phenotype and IL-10 and IL-12 Production by Tolerogenic Bone Marrow-Derived Dendritic Cells. Cells 2018; 7:cells7120256. [PMID: 30544623 PMCID: PMC6316502 DOI: 10.3390/cells7120256] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Revised: 11/28/2018] [Accepted: 12/04/2018] [Indexed: 01/06/2023] Open
Abstract
Dendritic cells (DCs) play a major role in innate and adaptive immunity and self-immune tolerance. Immunogenic versus tolerogenic DC functions are dictated by their levels of costimulatory molecules and their cytokine expression profile. The transcription factor C/EBPβ regulates the expression of several inflammatory genes in many cell types including macrophages. However, little is known regarding the role of C/EBPβ in tolerogenic versus immunogenic DCs functions. We have previously reported that bone marrow-derived DCs generated with GM-CSF (GM/DCs) acquire the signature of semi-mature tolerogenic IL-10-producing DCs as opposed to immunogenic DCs generated with GM-CSF and IL-4 (IL-4/DCs). Here, we show that tolerogenic GM/DCs exhibit higher levels of phosphorylation and enhanced DNA binding activity of C/EBPβ and CREB than immunogenic IL-4/DCs. We also show that the p38 MAPK/CREB axis and GSK3 play an important role in regulating C/EBPβ phosphorylation and DNA binding activity. Inhibition of p38 MAPK in GM/DCs resulted in a drastic decrease of C/EBPβ and CREB DNA binding activities, a reduction of their IL-10 production and an increase of their IL-12p70 production, a characteristic of immunogenic IL-4/DCs. We also present evidence that GSK3 inhibition in GM/DCs reduced C/EBPβ DNA binding activity and increased expression of costimulatory molecules in GM/DCs and their production of IL-10. Analysis of GM/DCs of C/EBPβ-/- mice showed that C/EBPβ was essential to maintain the semimature phenotype and the production of IL-10 as well as low CD4⁺ T cell proliferation. Our results highlight the importance of the p38MAPK-C/EBPβ pathway in regulating phenotype and function of tolerogenic GM/DCs.
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Affiliation(s)
- Chantal Guindi
- Immunology Division, Faculty of Medicine and Health Sciences and Centre de Recherche du CHUS, 3001, 12th Avenue North, Université de Sherbrooke, Sherbrooke, QC J1H 5N4, Canada.
| | - Alexandre Cloutier
- Immunology Division, Faculty of Medicine and Health Sciences and Centre de Recherche du CHUS, 3001, 12th Avenue North, Université de Sherbrooke, Sherbrooke, QC J1H 5N4, Canada.
| | - Simon Gaudreau
- Immunology Division, Faculty of Medicine and Health Sciences and Centre de Recherche du CHUS, 3001, 12th Avenue North, Université de Sherbrooke, Sherbrooke, QC J1H 5N4, Canada.
| | - Echarki Zerif
- Immunology Division, Faculty of Medicine and Health Sciences and Centre de Recherche du CHUS, 3001, 12th Avenue North, Université de Sherbrooke, Sherbrooke, QC J1H 5N4, Canada.
| | - Patrick P McDonald
- Immunology Division, Faculty of Medicine and Health Sciences and Centre de Recherche du CHUS, 3001, 12th Avenue North, Université de Sherbrooke, Sherbrooke, QC J1H 5N4, Canada.
| | - Olga Tatsiy
- Immunology Division, Faculty of Medicine and Health Sciences and Centre de Recherche du CHUS, 3001, 12th Avenue North, Université de Sherbrooke, Sherbrooke, QC J1H 5N4, Canada.
| | - Claude Asselin
- Immunology Division, Faculty of Medicine and Health Sciences and Centre de Recherche du CHUS, 3001, 12th Avenue North, Université de Sherbrooke, Sherbrooke, QC J1H 5N4, Canada.
| | - Gilles Dupuis
- Immunology Division, Faculty of Medicine and Health Sciences and Centre de Recherche du CHUS, 3001, 12th Avenue North, Université de Sherbrooke, Sherbrooke, QC J1H 5N4, Canada.
| | - Denis Gris
- Immunology Division, Faculty of Medicine and Health Sciences and Centre de Recherche du CHUS, 3001, 12th Avenue North, Université de Sherbrooke, Sherbrooke, QC J1H 5N4, Canada.
| | - And Abdelaziz Amrani
- Immunology Division, Faculty of Medicine and Health Sciences and Centre de Recherche du CHUS, 3001, 12th Avenue North, Université de Sherbrooke, Sherbrooke, QC J1H 5N4, Canada.
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31
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Richardson JR, Armbruster NS, Günter M, Henes J, Autenrieth SE. Staphylococcus aureus PSM Peptides Modulate Human Monocyte-Derived Dendritic Cells to Prime Regulatory T Cells. Front Immunol 2018; 9:2603. [PMID: 30555457 PMCID: PMC6282063 DOI: 10.3389/fimmu.2018.02603] [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: 07/27/2018] [Accepted: 10/23/2018] [Indexed: 01/06/2023] Open
Abstract
Staphylococcus aureus (Sa), as one of the major human pathogens, has very effective strategies to subvert the human immune system. Virulence of the emerging community-associated methicillin-resistant Sa (CA-MRSA) depends on the secretion of phenol-soluble modulin (PSM) peptide toxins e.g., by binding to and modulation of innate immune cells. Previously, by using mouse bone marrow-derived dendritic cells we demonstrated that PSMs in combination with various Toll-like receptor (TLR) ligands induce a tolerogenic DC phenotype (tDC) characterized by the production of IL-10 and impaired secretion of pro-inflammatory cytokines. Consequently, PSM-induced tDCs favored priming of CD4+CD25+FoxP3+ Tregs with suppressor function while impairing the Th1 response. However, the relevance of these findings for the human system remained elusive. Here, we analyzed the impact of PSMα3 on the maturation, cytokine production, antigen uptake, and T cell stimulatory capacity of human monocyte-derived DCs (moDCs) treated simultaneously with either LPS (TLR4 ligand) or Sa cell lysate (TLR2 ligand). Herein, we demonstrate that PSMs indeed modulate human moDCs upon treatment with TLR2/4 ligands via multiple mechanisms, such as transient pore formation, impaired DC maturation, inhibited pro- and anti-inflammatory cytokine secretion, as well as reduced antigen uptake. As a result, the adaptive immune response was altered shown by an increased differentiation of naïve and even CD4+ T cells from patients with Th1/Th17-induced diseases (spondyloarthritis and rheumatoid arthritis) into CD4+CD127−CD25hiCD45RA−FoxP3hi regulatory T cells (Tregs) with suppressor function. This Treg induction was mediated most predominantly by direct DC-T-cell interaction. Thus, PSMs from highly virulent Sa strains affect DC functions not only in the mouse, but also in the human system, thereby modulating the adaptive immune response and probably increasing the tolerance toward the bacteria. Moreover, PSMα3 might be a novel peptide for tolerogenic DC induction that may be used for DC vaccination strategies.
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Affiliation(s)
| | - Nicole S Armbruster
- Department of Internal Medicine II, University of Tübingen, Tübingen, Germany
| | - Manina Günter
- Department of Internal Medicine II, University of Tübingen, Tübingen, Germany
| | - Jörg Henes
- Department of Internal Medicine II, University of Tübingen, Tübingen, Germany
| | - Stella E Autenrieth
- Department of Internal Medicine II, University of Tübingen, Tübingen, Germany
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Guo X, Liu Y, Bai J, Yu B, Xu M, Sun H, Shen J, Lin J, Zhang H, Wang D, Geng D, Pan G. Efficient Inhibition of Wear-Debris-Induced Osteolysis by Surface Biomimetic Engineering of Titanium Implant with a Mussel-Derived Integrin-Targeting Peptide. ACTA ACUST UNITED AC 2018; 3:e1800253. [PMID: 32627373 DOI: 10.1002/adbi.201800253] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 10/07/2018] [Indexed: 12/17/2022]
Affiliation(s)
- Xiaobin Guo
- Department of Orthopaedics; The First Affiliated Hospital of Soochow University; Suzhou Jiangsu 215006 China
| | - Yu Liu
- Department of Orthopaedics; The First Affiliated Hospital of Soochow University; Suzhou Jiangsu 215006 China
| | - Jiaxiang Bai
- Department of Orthopaedics; The First Affiliated Hospital of Soochow University; Suzhou Jiangsu 215006 China
| | - Binqing Yu
- Department of Orthopaedics; The First Affiliated Hospital of Soochow University; Suzhou Jiangsu 215006 China
| | - Menglei Xu
- Department of Orthopaedics; Suzhou Municipal Hospital Affiliated to Nanjing Medical University; Suzhou Jiangsu 215008 China
| | - Houyi Sun
- Department of Orthopaedics; The First Affiliated Hospital of Soochow University; Suzhou Jiangsu 215006 China
| | - Jining Shen
- Department of Orthopaedics; The First Affiliated Hospital of Soochow University; Suzhou Jiangsu 215006 China
| | - Jiayi Lin
- Department of Orthopaedics; The First Affiliated Hospital of Soochow University; Suzhou Jiangsu 215006 China
| | - Hongbo Zhang
- Department of Radiology; Affiliated Hospital of Jiangsu University; Zhenjiang Jiangsu 212001 China
| | - Dongqing Wang
- Department of Radiology; Affiliated Hospital of Jiangsu University; Zhenjiang Jiangsu 212001 China
| | - Dechun Geng
- Department of Orthopaedics; The First Affiliated Hospital of Soochow University; Suzhou Jiangsu 215006 China
| | - Guoqing Pan
- Department of Radiology; Affiliated Hospital of Jiangsu University; Zhenjiang Jiangsu 212001 China
- Institute for Advanced Materials; School of Materials Science and Engineering; Jiangsu University; Zhenjiang Jiangsu 212013 China
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Knockdown of LncRNA MALAT1 contributes to cell apoptosis via regulating NF-κB/CD80 axis in neonatal respiratory distress syndrome. Int J Biochem Cell Biol 2018; 104:138-148. [PMID: 30243953 DOI: 10.1016/j.biocel.2018.09.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 09/16/2018] [Accepted: 09/18/2018] [Indexed: 01/28/2023]
Abstract
Neonatal respiratory distress syndrome (NRDS) is a leading cause of morbidity in premature newborns and is a common reason for admission to the neonatal intensive care unit (NICU). Recent studies found that the pathogenesis of NRDS is not simply lung immaturity. Apoptosis is an essential process for the development and maturation of the lungs. In this study, we report a critical role of lncRNA MALAT1 in regulating CD80 transcription in the NRDS-associated apoptosis via binding with NF-κB. We first showed MALAT1 and CD80 were highly expressed in the peripheral blood mononuclear cells of NRDS with infection exposure. Then we found MALAT1 expressions were significantly increased by the treatment of LPS. We confirmed knockdown of MALAT1 promoted cell viability by CCK-8 assays, cell apoptosis by flow cytometric assays and cytoskeleton destruction by immunocytochemistry. We confirmed CD80 expression level was associated with cell apoptosis by affecting PARP and caspase-3. Then we demonstrated knockdown of MALAT1 promoted CD80 transcription in A549 cells. Furthermore, we confirmed that MALAT1 downregulated transcriptional expression of CD80 by interfering with NF-κB activation and disrupting its binding efficiency with the CD80 promoter in the cell nucleus. In conclusion, we first identified lncRNA MALAT1 as an important prognosis maker for NRDS patients. Most significantly, this study then demonstrated a novel regulatory function of knocked-down MALAT1 on the transcriptional level of CD80 by enhancing the binding of NF-κB to CD80 promoter. Since the interaction between MALAT1 and CD80 plays an essential role in the cell apoptosis of NRDS, our findings demonstrate the possibility of using MALAT1 as therapeutic target for treatment of NRDS, and extend existing knowledge about the molecular mechanism that underlies NRDS pathogensis.
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Juan C, Mao Y, Wang Q, Cao Q, Chen Y, Zhou G. The LncRNA MALAT1 regulates CD80 transcription via the NF-κB signaling pathway in the A549 cell line. Biochem Biophys Res Commun 2018; 503:1674-1681. [DOI: 10.1016/j.bbrc.2018.07.098] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 07/20/2018] [Indexed: 02/02/2023]
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35
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Xiao M, Feng Y, Cao G, Liu C, Zhang Z. A novel MtHSP70-FPR1 fusion protein enhances cytotoxic T lymphocyte responses to cervical cancer cells by activating human monocyte-derived dendritic cells via the p38 MAPK signaling pathway. Biochem Biophys Res Commun 2018; 503:2108-2116. [PMID: 30098789 DOI: 10.1016/j.bbrc.2018.07.167] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Accepted: 07/31/2018] [Indexed: 12/16/2022]
Abstract
OBJECTIVE To evaluate the potential effects of recombinant mycobacterium tuberculosis heat shock protein 70-formyl peptide receptor 1 (MtHSP70-FPR1) fusion protein on human monocyte-derived dendritic cell (moDC) maturation; cytotoxic T lymphocyte (CTL) responses to cervical cancer (CC) cells; and the roles of the p38 MAPK, ERK, and JNK pathways in its transition. METHODS Monocytes were positively selected with a MACS column with antiCD14 antibody-conjugated microbeads from umbilical cord blood. MoDCs were stimulated with MtHSP70-FPR1, MtHSP70, a mix of MtHSP70 and FPR1, FPR1, or phosphate buffer solution (PBS) as control. Flow cytometry was used to analyze the surface molecule expression of moDCs and IFN-γ-producing CD8+ T cells. T cell proliferation was assessed using [3][H]-thymidine assays. The cytotoxicity of moDC-activated T cells against CC cells was evaluated by MTT assays. Cytokine production was determined by enzyme-linked immunosorbent assay. Western blotting was used to investigate protein expression. RESULTS Compared with MtHSP70, MtHSP70 + FPR1, FPR1, or PBS-mediated moDCs, MtHSP70-FPR1-pulsed moDCs expressed higher levels of CD80, CD86, CD83, HLA-DR, and CCR7; secreted more IL-12p70, TNF-ɑ and IL-1β; and elicited stronger CTL priming and proliferation, resulting in an effective, HLA-I-dependent killing effect on CC cells. The p38 MAPK, ERK, and JNK pathways were all activated in MtHSP70-FPR1-mediated moDC maturation, but the p38 MAPK pathway played a vital role. CONCLUSIONS The excellent capability of MtHSP70-FPR1 fusion protein to induce phenotypical and functional maturation of moDCs and CC-specific CTL responses partly illustrates the potential clinical benefits of DC-based immunotherapy for CC.
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Affiliation(s)
- Meizhu Xiao
- Department of Obstetrics and Gynecology, Beijing Chaoyang Hospital, Capital Medical University, China
| | - Ying Feng
- Department of Obstetrics and Gynecology, Beijing Chaoyang Hospital, Capital Medical University, China
| | - Guangming Cao
- Department of Obstetrics and Gynecology, Beijing Chaoyang Hospital, Capital Medical University, China
| | - Chongdong Liu
- Department of Obstetrics and Gynecology, Beijing Chaoyang Hospital, Capital Medical University, China
| | - Zhenyu Zhang
- Department of Obstetrics and Gynecology, Beijing Chaoyang Hospital, Capital Medical University, China.
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36
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NOD2 up-regulates TLR2-mediated IL-23p19 expression via NF-κB subunit c-Rel in Paneth cell-like cells. Oncotarget 2018; 7:63651-63660. [PMID: 27563808 PMCID: PMC5325392 DOI: 10.18632/oncotarget.11467] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 08/13/2016] [Indexed: 01/06/2023] Open
Abstract
IL-23p19 plays important roles in intestinal antimicrobial immunity, while its over-expression can lead to intestinal inflammation. However, the bacterial compounds and the type of pattern recognition receptor involved in the inducible expression of IL-23p19 in Paneth cells remain unclear. Here we show that the mRNA expression of IL-23p19 was increased in Paneth cell (PC)-like cells stimulated by Toll-like receptor 2 (TLR2) ligands, peptidoglycan (PGN) and Pam3CSK4, and was further increased in the presence of nucleotide-binding oligomerization domain 2 (NOD2)-ligand muramyl dipeptide (MDP). However, its mRNA expression was decreased in NOD2-knockdown PC-like cells. Additionally, the c-Rel activation was increased in Pam3CSK4- or PGN-stimulated PC-like cells, but the PGN-induced c-Rel activation was decreased in NOD2-knockdown PC-like cells and had no significant difference compared with Pam3CSK4-induced c-Rel activation. Our results suggest that NOD2 up-regulates TLR2-mediated IL-23p19 expression via increasing c-Rel activation in PC-like cells. This finding might provide us with a novel therapeutic target for inflammatory bowel disease to inhibit IL-23p19 over-expression via the NOD2-c-Rel pathway.
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37
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Bryant CE, Sutherland S, Kong B, Papadimitrious MS, Fromm PD, Hart DNJ. Dendritic cells as cancer therapeutics. Semin Cell Dev Biol 2018; 86:77-88. [PMID: 29454038 DOI: 10.1016/j.semcdb.2018.02.015] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 12/14/2017] [Accepted: 02/10/2018] [Indexed: 02/06/2023]
Abstract
The ability of immune therapies to control cancer has recently generated intense interest. This therapeutic outcome is reliant on T cell recognition of tumour cells. The natural function of dendritic cells (DC) is to generate adaptive responses, by presenting antigen to T cells, hence they are a logical target to generate specific anti-tumour immunity. Our understanding of the biology of DC is expanding, and they are now known to be a family of related subsets with variable features and function. Most clinical experience to date with DC vaccination has been using monocyte-derived DC vaccines. There is now growing experience with alternative blood-derived DC derived vaccines, as well as with multiple forms of tumour antigen and its loading, a wide range of adjuvants and different modes of vaccine delivery. Key insights from pre-clinical studies, and lessons learned from early clinical testing drive progress towards improved vaccines. The potential to fortify responses with other modalities of immunotherapy makes clinically effective "second generation" DC vaccination strategies a priority for cancer immune therapists.
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Affiliation(s)
- Christian E Bryant
- Institute of Haematology, Royal Prince Alfred Hospital, Camperdown, NSW Australia; Dendritic Cell Research, ANZAC Research Institute, Concord, NSW Australia.
| | - Sarah Sutherland
- Dendritic Cell Research, ANZAC Research Institute, Concord, NSW Australia; Sydney Medical School, The University of Sydney, Sydney, NSW Australia
| | - Benjamin Kong
- Dendritic Cell Research, ANZAC Research Institute, Concord, NSW Australia; Sydney Medical School, The University of Sydney, Sydney, NSW Australia
| | - Michael S Papadimitrious
- Dendritic Cell Research, ANZAC Research Institute, Concord, NSW Australia; Sydney Medical School, The University of Sydney, Sydney, NSW Australia
| | - Phillip D Fromm
- Dendritic Cell Research, ANZAC Research Institute, Concord, NSW Australia; Sydney Medical School, The University of Sydney, Sydney, NSW Australia
| | - Derek N J Hart
- Institute of Haematology, Royal Prince Alfred Hospital, Camperdown, NSW Australia; Dendritic Cell Research, ANZAC Research Institute, Concord, NSW Australia; Sydney Medical School, The University of Sydney, Sydney, NSW Australia.
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38
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Oyarce C, Cruz-Gomez S, Galvez-Cancino F, Vargas P, Moreau HD, Diaz-Valdivia N, Diaz J, Salazar-Onfray FA, Pacheco R, Lennon-Dumenil AM, Quest AFG, Lladser A. Caveolin-1 Expression Increases upon Maturation in Dendritic Cells and Promotes Their Migration to Lymph Nodes Thereby Favoring the Induction of CD8 + T Cell Responses. Front Immunol 2017; 8:1794. [PMID: 29326695 PMCID: PMC5733362 DOI: 10.3389/fimmu.2017.01794] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 11/30/2017] [Indexed: 12/14/2022] Open
Abstract
Dendritic cell (DC) trafficking from peripheral tissues to lymph nodes (LNs) is a key step required to initiate T cell responses against pathogens as well as tumors. In this context, cellular membrane protrusions and the actin cytoskeleton are essential to guide DC migration towards chemotactic signals. Caveolin-1 (CAV1) is a scaffolding protein that modulates signaling pathways leading to remodeling of the actin cytoskeleton and enhanced migration of cancer cells. However, whether CAV1 is relevant for DC function and specifically for DC migration to LNs is unknown. Here, we show that CAV1 expression is upregulated in DCs upon LPS- and TNF-α-induced maturation. CAV1 deficiency did not affect differentiation, maturation, or the ability of DCs to activate CD8+ T cells in vitro. However, CAV1-deficient (CAV1-/-) DCs displayed reduced in vivo trafficking to draining LNs in control and inflammatory conditions. In vitro, CAV1-/- DCs showed reduced directional migration in CCL21 gradients in transwell assays without affecting migration velocity in confined microchannels or three-dimensional collagen matrices. In addition, CAV1-/- DCs displayed reduced activation of the small GTPase Rac1, a regulator of actin cytoskeletal remodeling, and lower numbers of F-actin-forming protrusions. Furthermore, mice adoptively transferred with peptide-pulsed CAV1-/- DCs showed reduced CD8+ T cell responses and antitumor protection. Our results suggest that CAV1 promotes the activation of Rac1 and the formation of membrane protrusions that favor DC chemotactic trafficking toward LNs where they can initiate cytotoxic T cell responses.
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Affiliation(s)
- Cesar Oyarce
- Laboratory of Gene Immunotherapy, Fundación Ciencia & Vida, Santiago, Chile.,Laboratory of Cellular Communication, Advanced Center for Chronic Diseases (ACCDiS) and Center for Molecular Studies of the Cell (CEMC), Program in Cell and Molecular Biology, Faculty of Medicine, Biomedical Sciences Institute (ICBM), University of Chile, Santiago, Chile
| | - Sebastián Cruz-Gomez
- Laboratory of Gene Immunotherapy, Fundación Ciencia & Vida, Santiago, Chile.,Laboratory of Cellular Communication, Advanced Center for Chronic Diseases (ACCDiS) and Center for Molecular Studies of the Cell (CEMC), Program in Cell and Molecular Biology, Faculty of Medicine, Biomedical Sciences Institute (ICBM), University of Chile, Santiago, Chile
| | | | - Pablo Vargas
- Institut National de la Santé et de la Recherche Médicale Unité 144, Institut Curie/CNRS, Paris, France
| | - Hélène D Moreau
- Institut National de la Santé et de la Recherche Médicale Unité 932, Institut Curie/CNRS, Paris, France
| | - Natalia Diaz-Valdivia
- Laboratory of Cellular Communication, Advanced Center for Chronic Diseases (ACCDiS) and Center for Molecular Studies of the Cell (CEMC), Program in Cell and Molecular Biology, Faculty of Medicine, Biomedical Sciences Institute (ICBM), University of Chile, Santiago, Chile
| | - Jorge Diaz
- Laboratory of Cellular Communication, Advanced Center for Chronic Diseases (ACCDiS) and Center for Molecular Studies of the Cell (CEMC), Program in Cell and Molecular Biology, Faculty of Medicine, Biomedical Sciences Institute (ICBM), University of Chile, Santiago, Chile
| | - Flavio Andres Salazar-Onfray
- Program in Immunology, Faculty of Medicine, Biomedical Sciences Institute (ICBM), University of Chile, Santiago, Chile
| | - Rodrigo Pacheco
- Laboratory of Neuroimmunology, Fundación Ciencia & Vida, Santiago, Chile.,Departamento de Ciencias Biológicas, Facultad de Ciencias Biológicas, Universidad Andres Bello, Santiago, Chile
| | - Ana Maria Lennon-Dumenil
- Institut National de la Santé et de la Recherche Médicale Unité 932, Institut Curie/CNRS, Paris, France
| | - Andrew F G Quest
- Laboratory of Cellular Communication, Advanced Center for Chronic Diseases (ACCDiS) and Center for Molecular Studies of the Cell (CEMC), Program in Cell and Molecular Biology, Faculty of Medicine, Biomedical Sciences Institute (ICBM), University of Chile, Santiago, Chile
| | - Alvaro Lladser
- Laboratory of Gene Immunotherapy, Fundación Ciencia & Vida, Santiago, Chile
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Luo L, Qin T, Huang Y, Zheng S, Bo R, Liu Z, Xing J, Hu Y, Liu J, Wang D. Exploring the immunopotentiation of Chinese yam polysaccharide poly(lactic-co-glycolic acid) nanoparticles in an ovalbumin vaccine formulation in vivo. Drug Deliv 2017; 24:1099-1111. [PMID: 28776443 PMCID: PMC8241064 DOI: 10.1080/10717544.2017.1359861] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 07/21/2017] [Accepted: 07/22/2017] [Indexed: 01/12/2023] Open
Abstract
Biocompatible and biodegradable poly(lactic-co-glycolic acid) (PLGA) has been approved by the US Food and Drug Administration and has frequently been used to develop potential vaccine delivery systems. The immunoregulation and immunopotentiation of Chinese yam polysaccharide (CYP) have been widely demonstrated. In the current study, cell uptake mechanisms in dendritic cells (DCs) were monitored in vitro using confocal laser scanning microscopy, transmission electron microscopy, and flow cytometry. To study a CYP-PLGA nanoparticle-adjuvanted delivery system, CYP and ovalbumin (OVA) were encapsulated in PLGA nanoparticles (CYPPs) to act as a vaccine, and the formulation was tested in immunized mice. The CYPPs more easily underwent uptake by DCs in vitro, and CYPP/OVA could stimulate more effective antigen-specific immune responses than any of the single-component formulations in vivo. Mice immunized using CYPP/OVA exhibited more secretion of OVA-specific IgG antibodies, better proliferation, and higher cytokine secretion by splenocytes and significant activation of CD3+CD4+ and CD3+CD8+ T cells. Overall, the CYPP/OVA formulation produced a stronger humoral and cellular immune response and a mixed Th1/Th2 immune response with a greater Th1 bias in comparison with the other formulations. In conclusion, the data demonstrate that the CYPP-adjuvanted delivery system has the potential to strengthen immune responses and lay the foundation for novel adjuvant design.
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Affiliation(s)
- Li Luo
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Tao Qin
- Fujian Key Laboratory of Traditional Chinese Veterinary Medicine and Animal, Fujian Agriculture and Forestry University, Fuzhou, PR China
| | - Yifan Huang
- Fujian Key Laboratory of Traditional Chinese Veterinary Medicine and Animal, Fujian Agriculture and Forestry University, Fuzhou, PR China
| | - Sisi Zheng
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Ruonan Bo
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Zhenguang Liu
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Jie Xing
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Yuanliang Hu
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Jiaguo Liu
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Deyun Wang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
- Fujian Key Laboratory of Traditional Chinese Veterinary Medicine and Animal, Fujian Agriculture and Forestry University, Fuzhou, PR China
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40
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Wang H, Yu Q, Nie SP, Xiang QD, Zhao MM, Liu SY, Xie MY, Wang SQ. Polysaccharide purified from Ganoderma atrum induced activation and maturation of murine myeloid-derived dendritic cells. Food Chem Toxicol 2017; 108:478-485. [DOI: 10.1016/j.fct.2017.02.026] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Revised: 02/12/2017] [Accepted: 02/19/2017] [Indexed: 10/20/2022]
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Chung TW, Li YR, Huang WY, Su JH, Chan HL, Lin SH, Liu CS, Lin SC, Lin CC, Lin CH. Sinulariolide suppresses LPS‑induced phenotypic and functional maturation of dendritic cells. Mol Med Rep 2017; 16:6992-7000. [PMID: 28901434 DOI: 10.3892/mmr.2017.7480] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Accepted: 06/06/2017] [Indexed: 11/06/2022] Open
Abstract
The dendritic cell (DC) maturation process is essential for the development of T cell responses and immune tolerance. Accordingly, DCs are considered a major target in the development of immunomodulating agents. In the present study, the effect of sinulariolide, an active compound isolated from the cultured soft coral Sinularia flexibilis, on lipopolysaccharide (LPS)‑induced murine bone marrow‑derived DCs was evaluated. The different phenotypes, cytokine secretion and the mix‑lymphocyte reaction of DCs were detected using flow cytometry and ELISA. The experimental results revealed that the phenotypic and functional maturation of DCs stimulated by LPS were markedly reduced by sinulariolide in a concentration‑dependent manner, including the expression of co‑stimulatory molecules (CD40, CD80 and CD86). In addition, sinulariolide reduced the release of tumor necrosis factor‑α, interleukin (IL)‑6, IL‑12 and nitric oxide from the LPS‑activated DCs, decreased their abilities to stimulate allogeneic T cell proliferation, and inhibited LPS‑induced nuclear factor‑κB pathways. These findings offer novel insight into the immunopharmacological function of sinulariolide and its effects on DCs.
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Affiliation(s)
- Ting-Wen Chung
- Institute of Bioinformatics and Structural Biology and Department of Medical Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan, R.O.C
| | - Yi-Rong Li
- Department of Medical Research, Changhua Christian Hospital, Changhua 50006, Taiwan, R.O.C
| | - Wei Yuan Huang
- Institute of Biomedical Science, National Chung‑Hsing University, Taichung 40227, Taiwan, R.O.C
| | - Jui-Hsin Su
- National Museum of Marine Biology and Aquarium, Pingtung 944, Taiwan, R.O.C
| | - Hong-Lin Chan
- Institute of Bioinformatics and Structural Biology and Department of Medical Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan, R.O.C
| | - Sheng-Hao Lin
- Department of Medical Research, Changhua Christian Hospital, Changhua 50006, Taiwan, R.O.C
| | - Chin-San Liu
- Department of Medical Research, Changhua Christian Hospital, Changhua 50006, Taiwan, R.O.C
| | - Shih-Chao Lin
- Institute of Genomics and Bioinformatics, National Chung‑Hsing University, Taichung 40227, Taiwan, R.O.C
| | - Chi-Chien Lin
- Institute of Biomedical Science, National Chung‑Hsing University, Taichung 40227, Taiwan, R.O.C
| | - Ching-Hsiung Lin
- Department of Medical Research, Changhua Christian Hospital, Changhua 50006, Taiwan, R.O.C
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42
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Brutkiewicz RR. Cell Signaling Pathways That Regulate Antigen Presentation. THE JOURNAL OF IMMUNOLOGY 2017; 197:2971-2979. [PMID: 27824592 DOI: 10.4049/jimmunol.1600460] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 07/08/2016] [Indexed: 12/11/2022]
Abstract
Cell signaling pathways regulate much in the life of a cell: from shuttling cargo through intracellular compartments and onto the cell surface, how it should respond to stress, protecting itself from harm (environmental insults or infections), to ultimately, death by apoptosis. These signaling pathways are important for various aspects of the immune response as well. However, not much is known in terms of the participation of cell signaling pathways in Ag presentation, a necessary first step in the activation of innate and adaptive T cells. In this brief review, I discuss the known signaling molecules (and pathways) that regulate how Ags are presented to T cells and the mechanism(s), if identified. Studies in this area have important implications in vaccine development and new treatment paradigms against infectious diseases, autoimmunity, and cancer.
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Affiliation(s)
- Randy R Brutkiewicz
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN 46202
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Overexpression of heme oxygenase-1 in bone marrow stromal cells promotes microenvironment-mediated imatinib resistance in chronic myeloid leukemia. Biomed Pharmacother 2017; 91:21-30. [DOI: 10.1016/j.biopha.2017.04.076] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 04/17/2017] [Accepted: 04/17/2017] [Indexed: 12/13/2022] Open
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Lin W, Wang W, Wang D, Ling W. Quercetin protects against atherosclerosis by inhibiting dendritic cell activation. Mol Nutr Food Res 2017; 61. [PMID: 28457022 DOI: 10.1002/mnfr.201700031] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 03/29/2017] [Accepted: 04/11/2017] [Indexed: 12/16/2022]
Abstract
SCOPE Quercetin is a typical flavonol with atheroprotective effects, but the effect of quercetin on dendritic cell (DC) maturation in relation to atherosclerosis has not yet been clearly defined. Thus, we investigated whether quercetin can inhibit DC maturation and evaluated its potential value in atherosclerosis progression in ApoE-/- mice. METHODS AND RESULTS Quercetin consumption inhibited DC activation, inflammatory response and suppressed the progression of atherosclerosis in ApoE-/- mice. Subsequently, quercetin treatment inhibited the phenotypic and functional maturation of DCs, as evidenced not only by downregulation of CD80, CD86, MHC-II, IL-6 and IL-12 but also by a reduction in the ability to stimulate T cell allogeneic proliferation. Finally, an in vitro study demonstrated that quercetin inhibited DC maturation via upregulation of Dabs, which then downregulated the Src/PI3K/Akt-NF-κB-inflammatory pathways. CONCLUSIONS Our data indicate that quercetin attenuates atherosclerosis progression by regulating DC activation via Dab2 protein expression.
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Affiliation(s)
- Weiqun Lin
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou, PR China
| | - Wenting Wang
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou, PR China
| | - Dongliang Wang
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou, PR China
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangzhou, PR China
| | - Wenhua Ling
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou, PR China
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangzhou, PR China
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Liu L, Xu M, Tu Y, Du H, Zhou Y, Zhu G. Immunomodulatory effect of protease hydrolysates from ovotransferrin. Food Funct 2017; 8:1452-1459. [PMID: 28275769 DOI: 10.1039/c6fo01669c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
Proteins and bioactive peptides in avian egg white exert diverse biological activities. This study is designed to investigate the effect of protease hydrolysates from ovotransferrin (OVT) on bone marrow-derived dendritic cells (BMDCs) maturation. The results show that OVT-derived pepsin hydrolysate effectively inhibits lipopolysaccharide (LPS)-induced BMDCs maturation by reducing the expression levels of MHC-II, CD83, CD86 and the production of TNF-α, IL-12p70, and RANTES, but increases the production of IL-10. In addition, OVT-derived pepsin hydrolysate impairs the ability of LPS-stimulated BMDCs to induce allogeneic T lymphocyte proliferation and decreases the production of IFN-γ by activated T cells. In contrast, OVT-derived trypsin hydrolysate induces DCs maturation in terms of increasing the expression levels of MHC-II and the costimulatory molecules CD83 and CD86 and the production of TNF-α, IL-12p70 and RANTES. Furthermore, OVT-derived trypsin hydrolysate improves the ability of LPS-stimulated DCs to induce allogeneic T lymphocyte activation. Blockage of LPS-induced p38 MAPK and JNK activation and inducing ERK activation contribute to the inhibitory effect of OVT-derived pepsin hydrolysate on DCs, whereas OVT-derived trypsin hydrolysate induces DCs maturation through JNK and ERK activation. These results indicate that OVT-derived protease hydrolysate have an immunomodulatory function and could be applied as a potential functional food ingredient to regulate body immunity by modulating DC maturation.
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Affiliation(s)
- Lin Liu
- Key Laboratory of Natural Product and Functional Food of Jiangxi, Nanchang 330045, China
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Qin T, Ren Z, Huang Y, Song Y, Lin D, Li J, Ma Y, Wu X, Qiu F, Xiao Q. Selenizing Hericium erinaceus polysaccharides induces dendritic cells maturation through MAPK and NF-κB signaling pathways. Int J Biol Macromol 2017; 97:287-298. [DOI: 10.1016/j.ijbiomac.2017.01.039] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 01/07/2017] [Accepted: 01/09/2017] [Indexed: 10/20/2022]
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Xu L, Kwak M, Zhang W, Lee PCW, Jin JO. Time-dependent effect of E. coli LPS in spleen DC activation in vivo: Alteration of numbers, expression of co-stimulatory molecules, production of pro-inflammatory cytokines, and presentation of antigens. Mol Immunol 2017; 85:205-213. [PMID: 28285188 DOI: 10.1016/j.molimm.2017.02.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 02/13/2017] [Accepted: 02/27/2017] [Indexed: 12/12/2022]
Abstract
Lipopolysaccharide (LPS) is a well-known stimuli of dendritic cells (DCs). However, in vivo spleen DC maturation by Escherichia coli (E.coli) LPS has not been fully investigated. In this study, we examined the effect of LPS on the activation of spleen DCs and its subsets in a time-dependent manner on mice in vivo. The frequency, number and migration of spleen conventional DCs (cDCs) were increased 6 and 12h after completion of LPS treatment. Those increased DC numbers in spleen were then gradually decreased with apoptosis of the DCs. The highest levels of co-stimulatory molecule expression in the spleen cDCs and their subsets occurred 18h after LPS treatment, while the pro-inflammatory cytokines reached their maximum in the intracellular levels of the spleen cDCs and their subsets 3h after LPS treatment. The antigen presentation of the spleen cDCs and their subsets increased gradually from 3 to 12h after LPS treatment, but those levels decreased rapidly after 18h post-LPS treatment. Thus, by highlighting the importance of time in the stimulation of spleen DCs by LPS in mice in vivo, our data provided a model that could be used by immunologists when considering the manipulation of DC functions in vivo for experimental and clinical applications.
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Affiliation(s)
- Li Xu
- Shanghai Public Health Clinical Center, Shanghai Medical College, Fudan University, Shanghai, China
| | - Minseok Kwak
- Department of Chemistry, Pukyong National University, Busan, South Korea
| | - Wei Zhang
- Shanghai Public Health Clinical Center, Shanghai Medical College, Fudan University, Shanghai, China
| | - Peter Chang-Whan Lee
- Department of Biomedical Sciences, University of Ulsan College of Medicine, ASAN Medical Center, Seoul, South Korea.
| | - Jun-O Jin
- Shanghai Public Health Clinical Center, Shanghai Medical College, Fudan University, Shanghai, China.
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Mavin E, Nicholson L, Rafez Ahmed S, Gao F, Dickinson A, Wang XN. Human Regulatory T Cells Mediate Transcriptional Modulation of Dendritic Cell Function. THE JOURNAL OF IMMUNOLOGY 2016; 198:138-146. [PMID: 27895173 DOI: 10.4049/jimmunol.1502487] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 10/21/2016] [Indexed: 12/21/2022]
Abstract
Regulatory T cells (Treg) attenuate dendritic cell (DC) maturation and stimulatory function. Current knowledge on the functional impact of semimature DC is limited to CD4+ T cell proliferation and cytokine production. Little is known about the molecular basis underpinning the functional effects of Treg-treated DC (Treg-DC). We present novel evidence that Treg-DC skewed CD4+ naive T cell polarization toward a regulatory phenotype and impaired CD8+ T cell allo-reactive responses, including their ability to induce target tissue damage in a unique in vitro human graft-versus-host disease skin explant model. Microarray analysis clustered Treg-DC as a discrete population from mature-DC and immature-DC, with 51 and 93 genes that were significantly over- or underexpressed, respectively, compared with mature-DC. Quantitative real-time PCR analysis revealed an intermediate expression level of CD38, CD83, CD80 and CD86 mRNA in Treg-DC, lower than mature-DC, higher than immature-DC. We also observed an attenuation of NF-κB pathway, an upstream regulator of the aforementioned genes, concomitant with reduced expression of two NF-κB-signaling related genes RELB and NFκBIZ, in the Treg-DC, together with an increased expression of Wnt5a, a negative regulator of DC differentiation. We further confirmed that the Treg-DC-mediated skewed CD4+ naive T cell polarization resulted from decreased IL-12 secretion by Treg-DC, which may be post-transcriptionally modulated by decreased expression of microRNA-155 in Treg-DC. To our knowledge, this is the first study demonstrating a transcriptional modulation of DC function by human Treg, partially via attenuation of the NF-κB signaling pathway and upregulation of Wnt5a, suggesting Treg may interfere with DC reprogramming during maturation, thereby modulating DC function.
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Affiliation(s)
- Emily Mavin
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, NE2 4HH, United Kingdom; and
| | - Lindsay Nicholson
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, NE2 4HH, United Kingdom; and
| | - Syed Rafez Ahmed
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, NE2 4HH, United Kingdom; and
| | - Fei Gao
- Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, NE7 1RU, United Kingdom
| | - Anne Dickinson
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, NE2 4HH, United Kingdom; and
| | - Xiao-Nong Wang
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, NE2 4HH, United Kingdom; and
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Yazdanbakhsh K, Shaz BH, Hillyer CD. Immune Regulation of sickle Cell Alloimmunization. ACTA ACUST UNITED AC 2016; 12:248-253. [PMID: 28261322 DOI: 10.1111/voxs.12296] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Red blood cell (RBC) transfusion remains an important treatment for patients with sickle cell disease (SCD) and the majority of patients receive transfusions by adulthood. However, SCD patients are at a high risk of alloimmunization, which can cause life-threatening complications. The high rate of alloimmunization can in part be explained by chronic inflammatory condition in SCD characterized by significant immune and inflammatory activation. Heightened immune effector cell responses and/or impaired regulatory networks are likely to drive alloantibody production in alloimmunized SCD patients. In support of this, altered T cell immunoregulation, known to control antibody responses, have been reported in alloimmunized SCD patients. In addition, stronger follicular help T cell responses that help antibody production by B cells were described in alloimmunized as compared to non-alloimmunized SCD patients. Furthermore, several innate immune abnormalities have been identified in alloimmunized SCD patients, including a compromised anti-inflammatory response against extracellular cell free heme. The data support a model in which alloimmunized SCD patients are unable to switch off their proinflammatory state in response to the ongoing hemolytic state characteristic of SCD, placing this patient subset at a higher risk to develop a strong immune response against allogeneic determinants on transfused RBCs, thus increasing the risk of further alloimmunization. A detailed mechanistic understanding of innate immune abnormalities that can contribute to pathogenic T cell responses in alloimmunized SCD patients will lay the foundation for identification of biomarkers of alloimmunization with the goal that this information will ultimately help guide therapy in these patients.
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PPAR-γ agonist pioglitazone regulates dendritic cells immunogenicity mediated by DC-SIGN via the MAPK and NF-κB pathways. Int Immunopharmacol 2016; 41:24-34. [PMID: 27792919 DOI: 10.1016/j.intimp.2016.09.028] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2016] [Revised: 09/07/2016] [Accepted: 09/27/2016] [Indexed: 12/20/2022]
Abstract
Dendritic cell-specific ICAM-3 grabbing non-integrin (DC-SIGN) is a dendritic cell-specific lectin which participates in dendritic cell (DC) trafficking, antigen uptake and DC-T cell interactions at the initiation of immune responses. This study investigated whether peroxisome proliferator-activated receptor-gamma (PPAR-γ) activation in human DCs regulates the immunogenicity of DCs mediated by DC-SIGN and exploited the possible molecular mechanisms, especially focused on the signaling pathways of mitogen-activated protein kinases (MAPK) and nuclear factor-κB (NF-κB). Here, we show that the PPAR-γ agonist pioglitazone decreased DC adhesion and transmigration, and DC stimulation of T cell proliferation mediated by DC-SIGN dependent on activation of PPAR-γ, although it increased DC endocytosis independent of PPAR-γ activation. Furthermore, PPAR-γ activation by pioglitazone in DCs down-regulated the expression of DC-SIGN, which was mediated by modulating the balance of the signaling pathways of extracellular signal-regulated kinase, c-Jun N-terminal kinase and NF-κB, but not p38 MAPK. Therefore, we conclude that PPAR-γ activation in human DCs regulates the immunogenicity of DCs mediated by DC-SIGN via the pathways of MAPK and NF-κB. These findings may support the important role of these mediators in the regulation of DC-mediated inflammatory and immunologic processes.
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