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1,25-Dihydroxyvitamin D3 modulates the phenotype and function of Monocyte derived dendritic cells in cattle. BMC Vet Res 2017; 13:390. [PMID: 29237505 PMCID: PMC5729451 DOI: 10.1186/s12917-017-1309-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 11/28/2017] [Indexed: 02/08/2023] Open
Abstract
Background The active form of the vitamin D3, 1,25-Dihydroxyvitamin D3 (1,25-(OH)2D3) has been shown to have major effects not only on physiological processes but also on the regulation of the immune system of vertebrates. Dendritic cells are specialised antigen presenting cells which are in charge of the initiation of T-cell dependant immune responses and as such are key regulators of responses towards pathogens. In this study we set out to evaluate the effects of 1,25-(OH)2D3 on the phenotype of cattle monocyte-derived dendritic cells (MoDCs) and how the conditioning with this vitamin affects the function of these myeloid cells. Results MoDCs were generated from CD14+ monocytes with bovine IL-4 and GM-CSF with or without 1,25-(OH)2D3 supplementation for 10 days. Vitamin D conditioned MoDCs showed a reduced expression of co-stimulatory and antigen presenting molecules, as well as a reduced capability of endocytose ovalbumin. Furthermore, the capacity of MoDCs to induce proliferation in an allogeneic mixed leukocyte reaction was abolished when MoDCs were generated in presence of 1,25-(OH)2D3. LPS induced maturation of 1,25-(OH)2D3conditioned MoDCs resulted in lower secretion of IL-12 and higher IL-10 than that observed in MoDCs. Conclusions The typical immunotolerant phenotype observed in cattle DCs after exposure to 1,25-(OH)2D3 has a significant effect on the functionality of these immune cells, inhibiting the T-cell stimulatory capacity of MoDCs. This could have profound implications on how the bovine immune system deals with pathogens, particularly in diseases such as tuberculosis or paratuberculosis.
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Jiang K, Guo Y, Xiao L, Pan W, Ma J. Dendritic cells should not be overlooked when studying the effect of IL-38 administration in arthritis. Ann Rheum Dis 2017; 77:e12. [PMID: 28606968 DOI: 10.1136/annrheumdis-2017-211780] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 05/12/2017] [Indexed: 11/04/2022]
Affiliation(s)
- Kuo Jiang
- Department of Orthopaedic Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Yunshan Guo
- Department of Orthopaedic Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Lin Xiao
- Department of Orthopaedic Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Wenjie Pan
- Department of Orthopaedic Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Jianbing Ma
- Department of Orthopaedic Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, China
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Ikić Matijašević M, Flegar D, Kovačić N, Katavić V, Kelava T, Šućur A, Ivčević S, Cvija H, Lazić Mosler E, Kalajzić I, Marušić A, Grčević D. Increased chemotaxis and activity of circulatory myeloid progenitor cells may contribute to enhanced osteoclastogenesis and bone loss in the C57BL/6 mouse model of collagen-induced arthritis. Clin Exp Immunol 2016; 186:321-335. [PMID: 27612450 DOI: 10.1111/cei.12862] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/03/2016] [Indexed: 01/01/2023] Open
Abstract
Our study aimed to determine the functional activity of different osteoclast progenitor (OCP) subpopulations and signals important for their migration to bone lesions, causing local and systemic bone resorption during the course of collagen-induced arthritis in C57BL/6 mice. Arthritis was induced with chicken type II collagen (CII), and assessed by clinical scoring and detection of anti-CII antibodies. We observed decreased trabecular bone volume of axial and appendicular skeleton by histomorphometry and micro-computed tomography as well as decreased bone formation and increased bone resorption rate in arthritic mice in vivo. In the affected joints, bone loss was accompanied with severe osteitis and bone marrow hypercellularity, coinciding with the areas of active osteoclasts and bone erosions. Flow cytometry analysis showed increased frequency of putative OCP cells (CD3- B220- NK1.1- CD11b-/lo CD117+ CD115+ for bone marrow and CD3- B220- NK1.1- CD11b+ CD115+ Gr-1+ for peripheral haematopoietic tissues), which exhibited enhanced differentiation potential in vitro. Moreover, the total CD11b+ population was expanded in arthritic mice as well as CD11b+ F4/80+ macrophage, CD11b+ NK1.1+ natural killer cell and CD11b+ CD11c+ myeloid dendritic cell populations in both bone marrow and peripheral blood. In addition, arthritic mice had increased expression of tumour necrosis factor-α, interleukin-6, CC chemokine ligand-2 (Ccl2) and Ccl5, with increased migration and differentiation of circulatory OCPs in response to CCL2 and, particularly, CCL5 signals. Our study characterized the frequency and functional properties of OCPs under inflammatory conditions associated with arthritis, which may help to clarify crucial molecular signals provided by immune cells to mediate systemically enhanced osteoresorption.
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Affiliation(s)
- M Ikić Matijašević
- Department of Physiology and Immunology, University of Zagreb School of Medicine, Zagreb, Croatia.,Laboratory for Molecular Immunology, Croatian Institute for Brain Research, University of Zagreb School of Medicine, Zagreb, Croatia
| | - D Flegar
- Department of Physiology and Immunology, University of Zagreb School of Medicine, Zagreb, Croatia.,Laboratory for Molecular Immunology, Croatian Institute for Brain Research, University of Zagreb School of Medicine, Zagreb, Croatia
| | - N Kovačić
- Laboratory for Molecular Immunology, Croatian Institute for Brain Research, University of Zagreb School of Medicine, Zagreb, Croatia.,Department of Anatomy, University of Zagreb School of Medicine, Zagreb, Croatia
| | - V Katavić
- Laboratory for Molecular Immunology, Croatian Institute for Brain Research, University of Zagreb School of Medicine, Zagreb, Croatia.,Department of Anatomy, University of Zagreb School of Medicine, Zagreb, Croatia
| | - T Kelava
- Department of Physiology and Immunology, University of Zagreb School of Medicine, Zagreb, Croatia.,Laboratory for Molecular Immunology, Croatian Institute for Brain Research, University of Zagreb School of Medicine, Zagreb, Croatia
| | - A Šućur
- Department of Physiology and Immunology, University of Zagreb School of Medicine, Zagreb, Croatia.,Laboratory for Molecular Immunology, Croatian Institute for Brain Research, University of Zagreb School of Medicine, Zagreb, Croatia
| | - S Ivčević
- Department of Physiology and Immunology, University of Zagreb School of Medicine, Zagreb, Croatia.,Laboratory for Molecular Immunology, Croatian Institute for Brain Research, University of Zagreb School of Medicine, Zagreb, Croatia
| | - H Cvija
- Department of Physiology and Immunology, University of Zagreb School of Medicine, Zagreb, Croatia.,Laboratory for Molecular Immunology, Croatian Institute for Brain Research, University of Zagreb School of Medicine, Zagreb, Croatia
| | - E Lazić Mosler
- Laboratory for Molecular Immunology, Croatian Institute for Brain Research, University of Zagreb School of Medicine, Zagreb, Croatia.,Department of Anatomy, University of Zagreb School of Medicine, Zagreb, Croatia
| | - I Kalajzić
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, CT, USA
| | - A Marušić
- Department of Research in Biomedicine and Health, University of Split School of Medicine, Split, Croatia
| | - D Grčević
- Department of Physiology and Immunology, University of Zagreb School of Medicine, Zagreb, Croatia.,Laboratory for Molecular Immunology, Croatian Institute for Brain Research, University of Zagreb School of Medicine, Zagreb, Croatia
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54
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Sniping the scout: Targeting the key molecules in dendritic cell functions for treatment of autoimmune diseases. Pharmacol Res 2016; 107:27-41. [DOI: 10.1016/j.phrs.2016.02.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 02/23/2016] [Accepted: 02/23/2016] [Indexed: 02/07/2023]
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55
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Myeloid deletion of SIRT1 suppresses collagen-induced arthritis in mice by modulating dendritic cell maturation. Exp Mol Med 2016; 48:e221. [PMID: 26987484 PMCID: PMC4892877 DOI: 10.1038/emm.2015.124] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Revised: 11/22/2015] [Accepted: 11/29/2015] [Indexed: 12/29/2022] Open
Abstract
The type III histone deacetylase silent information regulator 1 (SIRT1) is an enzyme that is critical for the modulation of immune and inflammatory responses. However, the data on its role in rheumatoid arthritis (RA) are limited and controversial. To better understand how SIRT1 regulates adaptive immune responses in RA, we evaluated collagen-induced arthritis (CIA) in myeloid cell-specific SIRT1 knockout (mSIRT1 KO) and wild-type (WT) mice. Arthritis severity was gauged on the basis of clinical, radiographic and pathologic scores. Compared with their WT counterparts, the mSIRT1 KO mice exhibited less severe arthritis, which was less destructive to the joints. The expression levels of inflammatory cytokines, matrix metalloproteinases and ROR-γT were also reduced in the mSIRT1 KO mice compared with the WT mice and were paralleled by reductions in the numbers of Th1 and Th17 cells and CD80- or CD86-positive dendritic cells (DCs). In addition, impaired DC maturation and decreases in the Th1/Th17 immune response were observed in the mSIRT1 KO mice. T-cell proliferation was also investigated in co-cultures with antigen-pulsed DCs. In the co-cultures, the DCs from the mSIRT1 KO mice showed decreases in T-cell proliferation and the Th1/Th17 immune response. In this study, myeloid cell-specific deletion of SIRT1 appeared to suppress CIA by modulating DC maturation. Thus, a careful investigation of DC-specific SIRT1 downregulation is needed to gauge the therapeutic utility of agents targeting SIRT1 in RA.
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Li X, Han Y, Zhou Q, Jie H, He Y, Han J, He J, Jiang Y, Sun E. Apigenin, a potent suppressor of dendritic cell maturation and migration, protects against collagen-induced arthritis. J Cell Mol Med 2016; 20:170-80. [PMID: 26515512 PMCID: PMC4717846 DOI: 10.1111/jcmm.12717] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Accepted: 09/15/2015] [Indexed: 12/20/2022] Open
Abstract
This study aimed to investigate whether apigenin (API) suppresses arthritis development through the modulation of dendritic cell functions. Bone marrow-derived dendritic cells (BMDCs) were stimulated in vitro with lipopolysaccharide (LPS) and treated with API for 24 hrs; DC functions, including phenotype expressions, cytokine secretion, phagocytosis and chemotaxis, were then investigated. The effects of API on collagen-induced arthritis (CIA) were examined in vivo, and purified DCs from the lymph nodes (LNs) of API-treated CIA mice were analysed for phenotypes and subsets. In in vitro, API efficiently restrained the phenotypic and functional maturation of LPS-stimulated BMDCs while maintaining phagocytotic capabilities. Moreover, API inhibited the chemotactic responses of LPS-stimulated BMDCs, which may be related to the depressive effect on chemokine receptor 4 (CXCR4). In in vivo, API treatment delayed the onset and reduced the severity of arthritis in CIA mice, and diminished secretion of pro-inflammatory cytokines in the serum and supernatants from the LN cells of the CIA mice. Similar to the in vitro findings, the API-treated mice exhibited reduced expression of co-stimulatory molecules and major histocompatibility complex II on DCs. Furthermore, API treatment strongly down-regulated the number of Langerhans cells, but not plasmacytoid DCs (pDCs) in LNs, which may be related to the depressive effect of API on the expression of CXCR4 on DCs of peripheral blood. These data provide new insight into the mechanism of action of API on arthritis and indicate that the inhibition of maturation and migration of DCs by API may contribute to its immunosuppressive effects.
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MESH Headings
- Animals
- Apigenin/pharmacology
- Apigenin/therapeutic use
- Arthritis, Experimental/blood
- Arthritis, Experimental/immunology
- Arthritis, Experimental/prevention & control
- Arthritis, Rheumatoid/blood
- Arthritis, Rheumatoid/immunology
- Arthritis, Rheumatoid/prevention & control
- Cell Movement/drug effects
- Cells, Cultured
- Collagen Type II/immunology
- Cytokines/blood
- Dendritic Cells/drug effects
- Dendritic Cells/physiology
- Immunosuppressive Agents/pharmacology
- Immunosuppressive Agents/therapeutic use
- Lipopolysaccharides/pharmacology
- Lymph Nodes/drug effects
- Lymph Nodes/immunology
- Male
- Mice, Inbred C57BL
- Mice, Inbred DBA
- Receptors, CXCR4/blood
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Affiliation(s)
- Xing Li
- Department of Rheumatology and ImmunologyThe Third Affiliated Hospital of Southern Medical UniversityGuangzhouChina
- Institute of Clinical ImmunologyAcademy of Orthopedics, Guangdong ProvinceChina
| | - Yanping Han
- Department of Rheumatology and ImmunologyThe Third Affiliated Hospital of Southern Medical UniversityGuangzhouChina
- Institute of Clinical ImmunologyAcademy of Orthopedics, Guangdong ProvinceChina
- Hospital of South China Normal UniversityGuangzhouChina
| | - Qingyou Zhou
- Department of Rheumatology and ImmunologyThe Third Affiliated Hospital of Southern Medical UniversityGuangzhouChina
- Institute of Clinical ImmunologyAcademy of Orthopedics, Guangdong ProvinceChina
| | - Hongyu Jie
- Department of Rheumatology and ImmunologyThe Third Affiliated Hospital of Southern Medical UniversityGuangzhouChina
- Institute of Clinical ImmunologyAcademy of Orthopedics, Guangdong ProvinceChina
| | - Yi He
- Department of Rheumatology and ImmunologyThe Third Affiliated Hospital of Southern Medical UniversityGuangzhouChina
- Institute of Clinical ImmunologyAcademy of Orthopedics, Guangdong ProvinceChina
| | - Jiaochan Han
- Department of Rheumatology and ImmunologyThe Third Affiliated Hospital of Southern Medical UniversityGuangzhouChina
- Institute of Clinical ImmunologyAcademy of Orthopedics, Guangdong ProvinceChina
| | - Juan He
- Department of Rheumatology and ImmunologyThe Third Affiliated Hospital of Southern Medical UniversityGuangzhouChina
- Institute of Clinical ImmunologyAcademy of Orthopedics, Guangdong ProvinceChina
| | - Yong Jiang
- Key Laboratory of Proteomics of Guangdong ProvinceDepartment of PathophysiologySouthern Medical UniversityGuangzhouChina
- State Key Laboratory of Organ Failure ResearchNanfang HospitalSouthern Medical UniversityGuangzhouChina
| | - Erwei Sun
- Department of Rheumatology and ImmunologyThe Third Affiliated Hospital of Southern Medical UniversityGuangzhouChina
- Institute of Clinical ImmunologyAcademy of Orthopedics, Guangdong ProvinceChina
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Han Y, Li X, Zhou Q, Jie H, Lao X, Han J, He J, Liu X, Gu D, He Y, Sun E. FTY720 Abrogates Collagen-Induced Arthritis by Hindering Dendritic Cell Migration to Local Lymph Nodes. THE JOURNAL OF IMMUNOLOGY 2015; 195:4126-35. [PMID: 26416269 DOI: 10.4049/jimmunol.1401842] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 08/24/2015] [Indexed: 11/19/2022]
Abstract
Because dendritic cells (DCs) play critical roles in the pathogenesis of rheumatoid arthritis, modulation of their functions could serve as a novel therapy. In this study, we demonstrated that FTY720 treatment significantly suppressed the incidence and severity of collagen-induced arthritis (CIA) in DBA/1J mice via the modulation of DC functions. In FTY720-treated CIA mice, a decrease in the number of DCs in local draining lymph nodes (LNs) was observed. In vitro, FTY720 inhibited the trafficking of LPS-stimulated bone marrow-derived DCs (BMDCs). Decreased secretion of CCL19 and downregulation of CCR7 on DCs may explain the mechanisms underlying the impairment of DC migration induced by FTY720. In a DC-induced mouse arthritis model, FTY720 treatment also suppressed the incidence and severity of arthritis, which was correlated with a decrease in the migration of injected BMDCs to draining LNs. Although lower levels of costimulatory molecules (CD40, CD80, and CD86) and I-A(q) expressed on LN DCs were observed in FTY720-treated mice, in vitro analysis showed no effect of FTY720 on LPS-stimulated BMDC maturation. Furthermore, LN cells from FTY720-treated CIA mice displayed diminished production of proinflammatory cytokines in response to collagen II and Con A stimulation. In addition, the ratio of Th1/Th2 in the draining LNs of mice with DC-induced arthritis was decreased upon FTY720 treatment. This finding was consistent with the fact that FTY720 suppressed IL-12p70 production in cultured BMDCs. Taken together, these results indicate that inhibition of DC migration by FTY720 may provide a novel approach in treating autoimmune diseases such as rheumatoid arthritis.
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Affiliation(s)
- Yanping Han
- Department of Rheumatology and Immunology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China 510630; Institute of Clinical Immunology, Academy of Orthopedics, Guangdong Province, China 510630; Hospital of South China Normal University, Guangzhou, Guangdong, China 510631; and
| | - Xing Li
- Department of Rheumatology and Immunology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China 510630; Institute of Clinical Immunology, Academy of Orthopedics, Guangdong Province, China 510630
| | - Qingyou Zhou
- Department of Rheumatology and Immunology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China 510630; Institute of Clinical Immunology, Academy of Orthopedics, Guangdong Province, China 510630
| | - Hongyu Jie
- Department of Rheumatology and Immunology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China 510630; Institute of Clinical Immunology, Academy of Orthopedics, Guangdong Province, China 510630
| | - Xiaobin Lao
- Department of Rheumatology and Immunology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China 510630; Institute of Clinical Immunology, Academy of Orthopedics, Guangdong Province, China 510630
| | - Jiaochan Han
- Department of Rheumatology and Immunology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China 510630; Institute of Clinical Immunology, Academy of Orthopedics, Guangdong Province, China 510630
| | - Juan He
- Department of Rheumatology and Immunology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China 510630; Institute of Clinical Immunology, Academy of Orthopedics, Guangdong Province, China 510630
| | - Xinxia Liu
- Hospital of South China Normal University, Guangzhou, Guangdong, China 510631; and
| | - Dongsheng Gu
- Department of Rheumatology and Immunology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China 510630; Institute of Clinical Immunology, Academy of Orthopedics, Guangdong Province, China 510630; Department of Urology, No. 421 Hospital of PLA, Guangzhou, Guangdong, China 510010
| | - Yi He
- Department of Rheumatology and Immunology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China 510630; Institute of Clinical Immunology, Academy of Orthopedics, Guangdong Province, China 510630
| | - Erwei Sun
- Department of Rheumatology and Immunology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China 510630; Institute of Clinical Immunology, Academy of Orthopedics, Guangdong Province, China 510630;
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58
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DC-Based Immunotherapy Combined with Low-Dose Methotrexate Effective in the Treatment of Advanced CIA in Mice. J Immunol Res 2015. [PMID: 26221616 PMCID: PMC4499408 DOI: 10.1155/2015/834085] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
We have previously demonstrated that semimature dendritic cell- (smDC-) based immunotherapy is effective for the treatment of collagen-induced arthritis (CIA) prior to disease onset. In the present study, we examined the efficacy of combination therapy with smDCs and methotrexate (MTX) in advanced CIA with a score of 2-3. Combination therapy with low-dose MTX and type II collagen- (CII-) pulsed smDCs (CII-smDCs) was more effective in inhibiting disease progression than high or low-dose MTX alone or a combination of high dose MTX and CII-smDCs. The effect of CII-smDCs alone was also comparable to the combination therapy. CD4+Foxp3+ Treg populations and IL-10 secretion markedly increased, and CII-specific autoreactive T cells decreased in mice treated with CII-smDCs alone or in combination with MTX. Combination therapy reduced the secretion of interferon-γ (IFN-γ) and IL-17 with little influence on the IL-4 secretion in the mixed leukocyte reaction. These results imply that the combination therapy with low-dose MTX and smDCs is effective in controlling advanced CIA by enhancing Treg population and suppresses antigen-specific Th1/Th17 immunity, rather than initiating Th1 to Th2 immune deviation. Our findings provide a better understanding of the DC therapy in combination with MTX for the treatment of patients with rheumatoid arthritis (RA).
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Ning B, Wei J, Zhang A, Gong W, Fu J, Jia T, Yang SY. Antigen-specific tolerogenic dendritic cells ameliorate the severity of murine collagen-induced arthritis. PLoS One 2015; 10:e0131152. [PMID: 26107250 PMCID: PMC4479586 DOI: 10.1371/journal.pone.0131152] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2015] [Accepted: 05/31/2015] [Indexed: 11/19/2022] Open
Abstract
Dendritic cells (DCs) play important roles in initiation of the pathogenic processes of autoimmune disorders, such as rheumatoid arthritis (RA). Tolerogenic dendritic cells (tolDCs) are generated from naïve DCs and induce T cell tolerance; thus, they represent a promising strategy for specific cellular therapy for autoimmune diseases. In this study, we generated green fluorescent protein (GFP)-labeled tolDCs and confirmed their phenotypes and biological functions. We found that tolDCs suppressed the memory lymphocyte response and exhibited strong tolerogenic potential; thus, these cells show promise for the treatment of autoimmune diseases. Additionally, a collagen-induced arthritis (CIA) mouse model was used to test the role of tolDCs in vivo. The results of a further mechanistic experiment revealed that tolDCs suppressed inflammatory arthritis at least partially by up-regulating regulatory T (Treg) cells. Collectively, our data suggest that tolDCs may be used as a promising alternative therapy for inflammatory arthritis.
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Affiliation(s)
- Bin Ning
- Department of Orthopedic Surgery, Jinan Central Hospital affiliated with Shandong University, Jinan, Shandong, China
- Department of Biological Sciences, Wichita State University, Wichita, KS, United States of America
| | - Jianlu Wei
- Department of Orthopedic Surgery, Jinan Central Hospital affiliated with Shandong University, Jinan, Shandong, China
| | - Aijun Zhang
- Department of Pediatrics, Qilu Hospital, Shandong University, Jinan, Shandong, China
| | - Weiming Gong
- Department of Orthopedic Surgery, Jinan Central Hospital affiliated with Shandong University, Jinan, Shandong, China
| | - Jinqiu Fu
- Department of Pediatrics, Qilu Hospital, Shandong University, Jinan, Shandong, China
| | - Tanghong Jia
- Department of Orthopedic Surgery, Jinan Central Hospital affiliated with Shandong University, Jinan, Shandong, China
- * E-mail: (SYY); (TJ)
| | - Shang-You Yang
- Department of Orthopedic Surgery, Jinan Central Hospital affiliated with Shandong University, Jinan, Shandong, China
- Department of Biological Sciences, Wichita State University, Wichita, KS, United States of America
- * E-mail: (SYY); (TJ)
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60
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Amoah BP, Yang H, Zhang P, Su Z, Xu H. Immunopathogenesis of Myocarditis: The Interplay Between Cardiac Fibroblast Cells, Dendritic Cells, Macrophages and CD4+T Cells. Scand J Immunol 2015; 82:1-9. [DOI: 10.1111/sji.12298] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2014] [Revised: 02/21/2015] [Accepted: 03/14/2015] [Indexed: 02/06/2023]
Affiliation(s)
- B. Prince Amoah
- Department of Immunology; School of Medical Science and Laboratory Medicine; Jiangsu University; Zhenjiang China
- Department of Biomedical and Forensic Sciences; School of Biological Sciences; University of Cape Coast; Cape Coast Ghana
| | - H. Yang
- Department of Immunology; School of Medical Science and Laboratory Medicine; Jiangsu University; Zhenjiang China
| | - P. Zhang
- Department of Immunology; School of Medical Science and Laboratory Medicine; Jiangsu University; Zhenjiang China
| | - Z. Su
- Department of Immunology; School of Medical Science and Laboratory Medicine; Jiangsu University; Zhenjiang China
- The Central Laboratory; The Fourth Affiliated Hospital of Jiangsu University; Zhenjiang China
| | - H. Xu
- Department of Immunology; School of Medical Science and Laboratory Medicine; Jiangsu University; Zhenjiang China
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61
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Huang S, Mao J, Wei B, Pei G. The anti-spasticity drug baclofen alleviates collagen-induced arthritis and regulates dendritic cells. J Cell Physiol 2015; 230:1438-47. [PMID: 25556830 DOI: 10.1002/jcp.24884] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Accepted: 12/05/2014] [Indexed: 12/27/2022]
Abstract
Baclofen is used clinically as a drug that treats spasticity, which is a syndrome characterized by excessive contraction of the muscles and hyperflexia in the central nervous system (CNS), by activating GABA(B) receptors (GABA(B)Rs). Baclofen was recently reported to desensitize chemokine receptors and to suppress inflammation through the activation of GABA(B)Rs. GABA(B)Rs are expressed in various immune cells, but the functions of these receptors in autoimmune diseases remain largely unknown. In this study, we investigated the effects of baclofen in murine collagen-induced arthritis (CIA). Oral administration of baclofen alleviated the clinical development of CIA, with a reduced number of IL-17-producing T helper 17 (T(H)17) cells. In addition, baclofen treatment suppressed dendritic cell (DC)-primed T(H)17 cell differentiation by reducing the production of IL-6 by DCs in vitro. Furthermore, the pharmacological and genetic blockade of GABA(B)Rs in DCs weakened the effects of baclofen, indicating that GABA(B)Rs are the molecular targets of baclofen on DCs. Thus, our findings revealed a potential role for baclofen in the treatment of CIA, as well as a previously unknown signaling pathway that regulates DC function.
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Affiliation(s)
- Shichao Huang
- State Key Laboratory of Cell Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, P. R. China
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Deficiency of cathepsin K prevents inflammation and bone erosion in rheumatoid arthritis and periodontitis and reveals its shared osteoimmune role. FEBS Lett 2015; 589:1331-1339. [PMID: 25896020 DOI: 10.1016/j.febslet.2015.04.008] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 04/06/2015] [Accepted: 04/08/2015] [Indexed: 12/22/2022]
Abstract
Using rheumatoid arthritis (RA) and periodontitis mouse models, we demonstrate that RA and periodontitis share many pathological features, such as deregulated cytokine production, increased immune-cell infiltration, increased expression of Toll-like receptors (TLRs), and enhanced osteoclast activity and bone erosion. We reveal that genetic deletion of cathepsin K (Ctsk) caused a radical reduction in inflammation and bone erosion within RA joint capsules and periodontal lesions, a drastic decrease in immune-cell infiltration, and a significant reduction in osteoclasts, macrophages, dendritic and T-cells. Deficiency of Ctsk greatly decreased the expression of TLR-4, 5, and 9 and their downstream cytokines in periodontal gingival epithelial lesions and synovial RA lesions. Hence, Ctsk may be targeted to treat RA and periodontitis simultaneously due to its shared osteoimmune role.
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63
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Zhang L, Fu J, Sheng K, Li Y, Song S, Li P, Song S, Wang Q, Chen J, Yu J, Wei W. Bone marrow CD11b+F4/80+ dendritic cells ameliorate collagen-induced arthritis through modulating the balance between Treg and Th17. Int Immunopharmacol 2015; 25:96-105. [DOI: 10.1016/j.intimp.2015.01.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2014] [Revised: 12/30/2014] [Accepted: 01/14/2015] [Indexed: 10/24/2022]
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Jang B, Kim HW, Kim JS, Kim WS, Lee BR, Kim S, Kim H, Han SJ, Ha SJ, Shin SJ. Peptidylarginine deiminase inhibition impairs Toll-like receptor agonist-induced functional maturation of dendritic cells, resulting in the loss of T cell-proliferative capacity: a partial mechanism with therapeutic potential in inflammatory settings. J Leukoc Biol 2014; 97:351-62. [PMID: 25420918 DOI: 10.1189/jlb.3a0314-142rr] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Cl-amidine, which is a small-molecule inhibitor of PAD, has therapeutic potential for inflammation-mediated diseases. However, little is known regarding the manner by which PAD inhibition by Cl-amidine regulates inflammatory conditions. Here, we investigated the effects of PAD inhibition by Cl-amidine on the functioning of DCs, which are pivotal immune cells that mediate inflammatory diseases. When DC maturation was induced by TLR agonists, reduced cytokine levels (IL-6, IL-1β, and IL-12p70) were observed in Cl-amidine-treated DCs. Cl-amidine-treated, LPS-activated DCs exhibited alterations in their mature and functional statuses with up-regulated antigen uptake, down-regulated CD80, and MHC molecules. In addition, Cl-amidine-treated DCs dysregulated peptide-MHC class formations. Interestingly, the decreased cytokines were independent of MAPK/NF-κB signaling pathways and transcription levels, indicating that PAD inhibition by Cl-amidine may be involved in post-transcriptional steps of cytokine production. Transmission electron microscopy revealed morphotypical changes with reduced dendrites in the Cl-amidine-treated DCs, along with altered cellular compartments, including fragmented ERs and the formation of foamy vesicles. Furthermore, in vitro and in vivo Cl-amidine treatments impaired the proliferation of naïve CD4(+) and CD8(+) T cells. Overall, our findings suggest that Cl-amidine has therapeutic potential for treating inflammation-mediated diseases.
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Affiliation(s)
- Byungki Jang
- *Department of Microbiology, Institute for Immunology and Immunological Diseases, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, South Korea; and Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, South Korea
| | - Ho Won Kim
- *Department of Microbiology, Institute for Immunology and Immunological Diseases, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, South Korea; and Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, South Korea
| | - Jong-Seok Kim
- *Department of Microbiology, Institute for Immunology and Immunological Diseases, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, South Korea; and Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, South Korea
| | - Woo Sik Kim
- *Department of Microbiology, Institute for Immunology and Immunological Diseases, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, South Korea; and Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, South Korea
| | - Bo Ryeong Lee
- *Department of Microbiology, Institute for Immunology and Immunological Diseases, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, South Korea; and Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, South Korea
| | - Sojeong Kim
- *Department of Microbiology, Institute for Immunology and Immunological Diseases, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, South Korea; and Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, South Korea
| | - Hongmin Kim
- *Department of Microbiology, Institute for Immunology and Immunological Diseases, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, South Korea; and Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, South Korea
| | - Seung Jung Han
- *Department of Microbiology, Institute for Immunology and Immunological Diseases, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, South Korea; and Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, South Korea
| | - Sang-Jun Ha
- *Department of Microbiology, Institute for Immunology and Immunological Diseases, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, South Korea; and Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, South Korea
| | - Sung Jae Shin
- *Department of Microbiology, Institute for Immunology and Immunological Diseases, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, South Korea; and Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, South Korea
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Ding Y, Liang Y, Deng B, Qiao A, Wu K, Xiao W, Gong W. Induction of TGF-β and IL-10 production in dendritic cells using astilbin to inhibit dextran sulfate sodium-induced colitis. Biochem Biophys Res Commun 2014; 446:529-34. [PMID: 24613838 DOI: 10.1016/j.bbrc.2014.02.136] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Accepted: 02/28/2014] [Indexed: 02/05/2023]
Abstract
Astilbin, a major bioactive compound from Rhizoma smilacis glabrae, has been reported to possess anti-inflammatory properties. Our study first evaluated astilbin on dextran sulfate sodium (DSS)-induced acute colitis in mice. By intraperitoneal injection of astilbin, the severity of colitis was attenuated, and the serum levels of IL-10 and TGF-β were increased. Using flow cytometry, a higher number of IL-10(+) dendritic cells (DCs) and TGF-β(+) DCs and a lower number of CD86(+) DCs, IL-12 p40(+) DCs, and IL-1β(+) DCs were detected in the spleen of mice with colitis after astilbin treatment. The administration of astilbin also resulted in the upregulation of CD103(+) expression in colonic DCs. In a coculture system, murine bone marrow-derived DCs pretreated with astilbin resulted in an enhanced production of CD4(+)CD25(+)Foxp3(+) T cells. The results of this study show that astilbin could be a candidate drug for inflammatory bowel disease by mediating the regulatory functions of DCs.
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Affiliation(s)
- Yanbing Ding
- Department of Gastroenterology, The Second Clinical College of Yangzhou University, 45 Taizhou Road, Yangzhou, Jiangsu 225001, China.
| | - Yu Liang
- Department of Gastroenterology, The Second Clinical College of Yangzhou University, 45 Taizhou Road, Yangzhou, Jiangsu 225001, China
| | - Bin Deng
- Department of Gastroenterology, The Second Clinical College of Yangzhou University, 45 Taizhou Road, Yangzhou, Jiangsu 225001, China
| | - Ahui Qiao
- Department of Gastroenterology, The Second Clinical College of Yangzhou University, 45 Taizhou Road, Yangzhou, Jiangsu 225001, China
| | - Keyan Wu
- Department of Gastroenterology, The Second Clinical College of Yangzhou University, 45 Taizhou Road, Yangzhou, Jiangsu 225001, China
| | - Weiming Xiao
- Department of Gastroenterology, The Second Clinical College of Yangzhou University, 45 Taizhou Road, Yangzhou, Jiangsu 225001, China
| | - Weijuan Gong
- Department of Immunology, School of Medicine, Yangzhou University, 11 Huaihai Road, Yangzhou, Jiangsu 225001, China
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Van Brussel I, Lee WP, Rombouts M, Nuyts AH, Heylen M, De Winter BY, Cools N, Schrijvers DM. Tolerogenic dendritic cell vaccines to treat autoimmune diseases: Can the unattainable dream turn into reality? Autoimmun Rev 2014; 13:138-50. [DOI: 10.1016/j.autrev.2013.09.008] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Accepted: 09/27/2013] [Indexed: 01/10/2023]
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Effect of bone marrow-derived CD11b(+)F4/80 (+) immature dendritic cells on the balance between pro-inflammatory and anti-inflammatory cytokines in DBA/1 mice with collagen-induced arthritis. Inflamm Res 2014; 63:357-67. [PMID: 24458308 DOI: 10.1007/s00011-014-0707-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Revised: 12/28/2013] [Accepted: 01/05/2014] [Indexed: 12/25/2022] Open
Abstract
OBJECTIVE To explore the effect of bone marrow-derived CD11b(+)F4/80(+) immature dendritic cells (BM CD11b(+)F4/80(+)iDC) on the balance between pro-inflammatory and anti-inflammatory cytokines in DBA/1 mice with collagen-induced arthritis (CIA). METHODS BM CD11b(+)F4/80(+)iDC were induced with rmGM-CSF and rmIL-4, and were identified by the expressions of toll-like receptor 2 (TLR-2), indoleamine 2,3-deoxygenase (IDO), interleukin (IL)-10, transforming growth factor (TGF)-β1 and mixed leukocyte reaction (MLR). CIA was established in DBA/1 mice by immunization with type II collagen. CIA mice were injected intravenously with BM CD11b(+)F4/80(+)iDC three times after immunization. The effect of BM CD11b(+)F4/80(+)iDC on CIA was evaluated by the arthritis index, joint histopathology, body weight, thymus index, thymocytes proliferation, IL-1β, tumor necrosis factor (TNF)-α, IL-17, IL-10 and TGF-β1 levels. RESULTS BM CD11b(+)F4/80(+)iDC induced with rmGM-CSF and rmIL-4 expressed high levels of TLR-2, IDO, IL-10 and TGF-β1. Infusion of BM CD11b(+)F4/80(+)iDC in CIA mice significantly reduced the arthritis index and pathological scores of joints, recovered the weight, decreased the thymus index and inhibited thymocyte proliferation. Levels of IL-1β, TNF-α and IL-17 were decreased in BM CD11b(+)F4/80(+)iDC-treated mice. CONCLUSIONS BM CD11b(+)F4/80(+)iDC can be induced successfully with rmGM-CSF and rmIL-4. BM CD11b(+)F4/80(+)iDC treatment can ameliorate the development and severity of CIA by regulating the balance between pro-inflammatory cytokines and anti-inflammatory cytokines.
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A mouse model of adoptive immunotherapeutic targeting of autoimmune arthritis using allo-tolerogenic dendritic cells. PLoS One 2013; 8:e77729. [PMID: 24204938 PMCID: PMC3812020 DOI: 10.1371/journal.pone.0077729] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Accepted: 09/04/2013] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVE Tolerogenic dendritic cells (tDCs) are immunosuppressive cells with potent tolerogenic ability and are promising immunotherapeutic tools for treating rheumatoid arthritis (RA). However, it is currently unknown whether allogeneic tDCs (allo-tDCs) induce tolerance in RA, and whether the numbers of adoptively transferred allo-tDCs, or the requirement for pulsing with relevant auto-antigens are important. METHODS tDCs were derived from bone marrow precursors of C57BL/B6 mice, which were induced in vitro by GM-CSF, IL-10 and TGF-β1. Collagen-induced arthritis (CIA) was modeled in D1 mice by immunization with type II collagen (CII) to test the therapeutic ability of allo-tDCs against CIA. Clinical and histopathologic scores, arthritic incidence, cytokine and anti-CII antibody secretion, and CD4(+)Th subsets were analyzed. RESULTS tDCs were characterized in vitro by a stable immature phonotype and a potent immunosuppressive ability. Following adoptive transfer of low doses (5×10(5)) of CII-loaded allo-tDCs, a remarkable anti-arthritic activity, improved clinical scores and histological end-points were found. Serological levels of inflammatory cytokines and anti-CII antibodies were also significantly lower in CIA mice treated with CII-pulsed allo-tDCs as compared with allo-tDCs. Moreover, treatment with allo-tDCs altered the proportion of Treg/Th17 cells. CONCLUSION These findings suggested that allo-tDCs, especially following antigen loading, reduced the severity of CIA in a dose-dependent manner. The dampening of CIA was associated with modulated cytokine secretion, Treg/Th17 polarization and inhibition of anti-CII secretion. This study highlights the potential therapeutic utility of allo-tDCs in autoimmune arthritis and should facilitate the future design of allo-tDC immunotherapeutic strategies against RA.
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Kiss M, Czimmerer Z, Nagy L. The role of lipid-activated nuclear receptors in shaping macrophage and dendritic cell function: From physiology to pathology. J Allergy Clin Immunol 2013; 132:264-86. [PMID: 23905916 DOI: 10.1016/j.jaci.2013.05.044] [Citation(s) in RCA: 113] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 05/16/2013] [Accepted: 05/30/2013] [Indexed: 02/06/2023]
Abstract
Nuclear receptors are ligand-activated transcription factors linking lipid signaling to the expression of the genome. There is increasing appreciation of the involvement of this receptor network in the metabolic programming of macrophages and dendritic cells (DCs), essential members of the innate immune system. In this review we focus on the role of retinoid X receptor, retinoic acid receptor, peroxisome proliferator-associated receptor γ, liver X receptor, and vitamin D receptor in shaping the immune and metabolic functions of macrophages and DCs. We also provide an overview of the contribution of macrophage- and DC-expressed nuclear receptors to various immunopathologic conditions, such as rheumatoid arthritis, inflammatory bowel disease, systemic lupus erythematosus, asthma, and some others. We suggest that systematic analyses of the roles of these receptors and their activating lipid ligands in immunopathologies combined with complementary and focused translational and clinical research will be crucial for the development of new therapies using the many molecules available to target nuclear receptors.
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Affiliation(s)
- Mate Kiss
- Department of Biochemistry and Molecular Biology, Research Center for Molecular Medicine, University of Debrecen, Medical and Health Science Center, Debrecen, Hungary
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70
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Borges TJ, Lopes RL, Pinho NG, Machado FD, Souza APD, Bonorino C. Extracellular Hsp70 inhibits pro-inflammatory cytokine production by IL-10 driven down-regulation of C/EBPβ and C/EBPδ. Int J Hyperthermia 2013; 29:455-63. [PMID: 23808579 DOI: 10.3109/02656736.2013.798037] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
PURPOSE Extracellular Hsp70 has anti-inflammatory potential, demonstrated in different models of inflammatory diseases. We investigated probable mechanisms used by Hsp70 to down-regulate pro-inflammatory cytokines. MATERIALS AND METHODS We analysed cytokine mRNA levels in bone marrow-derived murine dendritic cells treated with Hsp70, lipopolysaccharide (LPS) and peptidoglycan (PGN) or OVA (an irrelevant protein control), hypothesising that this was mediated by C/EBPβ and C/EBPδ transcription factors. We also tested the involvement of TLR2, IL-10, ERK and STAT3, using genetically deficient mice and pharmacological inhibitors. RESULTS C/EBPβ and C/EBPδ levels were inhibited in bone marrow derived dendritic cells (BMDCs) treated with Hsp70, and that correlated with inhibition of TNF-α, IFN-γ and MCP-1. Such inhibition was not observed in TLR2 or IL-10 knockout mice, and was also abrogated upon pretreatment of cells with ERK and JAK2/STAT3 inhibitors. CONCLUSIONS C/EBPβ and C/EBPδ transcription factors are inhibited by Hsp70 treatment, and their inhibition occurs via the TLR2-ERK-STAT3-IL-10 pathway in BMDCs, mediating the anti-inflammatory effects of Hsp70.
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Affiliation(s)
- Thiago J Borges
- School of Biosciences and Biomedical Research Institute, Pontifícia Universidade Católica do Rio Grande do Sul , Av. Ipiranga, 6690, Porto Alegre, Rio Grande do Sul , Brazil
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Targeting BCL2 family in human myeloid dendritic cells: a challenge to cure diseases with chronic inflammations associated with bone loss. Clin Dev Immunol 2013; 2013:701305. [PMID: 23762095 PMCID: PMC3674653 DOI: 10.1155/2013/701305] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Revised: 04/08/2013] [Accepted: 04/22/2013] [Indexed: 11/25/2022]
Abstract
Rheumatoid arthritis (RA) and Langerhans cell histiocytosis (LCH) are common and rare diseases, respectively. They associate myeloid cell recruitment and survival in inflammatory conditions with tissue destruction and bone resorption. Manipulating dendritic cell (DC), and, especially, regulating their half-life and fusion, is a challenge. Indeed, these myeloid cells display pathogenic roles in both diseases and may be an important source of precursors for differentiation of osteoclasts, the bone-resorbing multinucleated giant cells. We have recently documented that the proinflammatory cytokine IL-17A regulates long-term survival of DC by inducing BCL2A1 expression, in addition to the constitutive MCL1 expression. We summarize bibliography of the BCL2 family members and their therapeutic targeting, with a special emphasis on MCL1 and BCL2A1, discussing their potential impact on RA and LCH. Our recent knowledge in the survival pathway, which is activated to perform DC fusion in the presence of IL-17A, suggests that targeting MCL1 and BCL2A1 in infiltrating DC may affect the clinical outcomes in RA and LCH. The development of new therapies, interfering with MCL1 and BCL2A1 expression, to target long-term surviving inflammatory DC should be translated into preclinical studies with the aim to increase the well-being of patients with RA and LCH.
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Tu HJ, Lin TH, Chiu YC, Tang CH, Yang RS, Fu WM. Enhancement of placenta growth factor expression by oncostatin M in human rheumatoid arthritis synovial fibroblasts. J Cell Physiol 2013; 228:983-90. [PMID: 23042533 DOI: 10.1002/jcp.24244] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Accepted: 09/26/2012] [Indexed: 01/18/2023]
Abstract
Oncostatin M (OSM) belongs to IL-6 subfamily and is mostly produced by T lymphocytes. High levels of OSM are detected in the pannus of rheumatoid arthritis (RA) patients and it may arouse the inflammation responses in joints and eventually leads to bone erosion. Placenta growth factor (PLGF) is an angiogenic factor and highly homologous with vascular endothelial growth factor (VEGF). It has been recently reported that PLGF is highly expressed in synovial tissue and enhances the production of proinflammatory cytokines including TNF-α and IL-6. Here, we demonstrated that OSM increased mRNA and protein levels of PLGF in a time- and concentration-dependent manner in RA synovial fibroblasts. Inhibitors of JAK3 and PI3K antagonized OSM-induced production of PLGF. OSM enhanced the phosphorylation of Tyr705-STAT3, Ser727-STAT3, Ser473-Akt, and increased the nuclear translocation of phosphorylated STAT3 time-dependently. Transfection of dominant negative Akt or application of PI3K inhibitorLY294002 significantly inhibited p-Tyr705-STAT3, p-Ser727-STAT3, and PLGF expression, indicating that Akt is involved in JAK3/STAT3/PLGF signaling cascade. To further examine whether STAT3 binds to the promoter region of PLGF, Chip assay was used and it was found that OSM could bind with PLGF promoter, which was inhibited by JAK3 and PI3K inhibitors. Accumulation of PLGF in the pannus may contribute to the inflammation, angiogenesis and joints destruction in RA patients. These findings demonstrated the important role of OSM in the pathology network of RA and provided novel therapeutic drug targets for RA treatment.
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Affiliation(s)
- Huang-Ju Tu
- Department of Pharmacology, College of Medicine, National Taiwan University, Taipei, Taiwan
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Gárate D, Rojas-Colonelli N, Peña C, Salazar L, Abello P, Pesce B, Aravena O, García-González P, Ribeiro CH, Molina MC, Catalán D, Aguillón JC. Blocking of p38 and transforming growth factor β receptor pathways impairs the ability of tolerogenic dendritic cells to suppress murine arthritis. ACTA ACUST UNITED AC 2013; 65:120-9. [PMID: 22972370 DOI: 10.1002/art.37702] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2012] [Accepted: 09/04/2012] [Indexed: 12/21/2022]
Abstract
OBJECTIVE Dendritic cells (DCs) modulated with lipopolysaccharide (LPS) are able to reduce inflammation when therapeutically administered into mice with collagen-induced arthritis (CIA). The aim of this study was to uncover the mechanisms that define the tolerogenic effect of short-term LPS-modulated DCs on CIA. METHODS Bone marrow-derived DCs were stimulated for 4 hours with LPS and characterized for their expression of maturation markers and their cytokine secretion profiles. Stimulated cells were treated with SB203580 or SB431542 to inhibit the p38 or transforming growth factor β (TGFβ) receptor pathway, respectively, or were left unmodified and, on day 35 after CIA induction, were used to inoculate mice. Disease severity was evaluated clinically. CD4+ T cell populations were counted in the spleen and lymph nodes from inoculated or untreated mice with CIA. CD4+ splenic T cells were transferred from mice with CIA treated with LPS-stimulated DCs or from untreated mice with CIA into other mice with CIA on day 35 of arthritis. RESULTS Treatment with LPS-stimulated DCs increased the numbers of interleukin-10 (IL-10)-secreting and TGFβ-secreting CD4+ T cells, but decreased the numbers of Th17 cells. Adoptive transfer of CD4+ T cells from treated mice with CIA reproduced the inhibition of active CIA accomplished with LPS-stimulated DCs. The therapeutic effect of LPS-stimulated DCs and their influence on T cell populations were abolished when the p38 and the TGFβ receptor pathways were inhibited. CONCLUSION DCs modulated short-term (4 hours) with LPS are able to confer a sustained cure in mice with established arthritis by re-educating the CD4+ T cell populations. This effect is dependent on the p38 and the TGFβ receptor signaling pathways, which suggests the participation of IL-10 and TGFβ in the recovery of tolerance.
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Affiliation(s)
- David Gárate
- University of Chile and Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
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Xie J, Wang Y, Bao J, Ma Y, Zou Z, Tang Z, Dong R, Wen H. Immune tolerance induced by RelB short-hairpin RNA interference dendritic cells in liver transplantation. J Surg Res 2013. [DOI: 10.1016/j.jss.2012.10.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Inflammatory immune cell responses and Toll-like receptor expression in synovial tissues in rheumatoid arthritis patients treated with biologics or DMARDs. Clin Rheumatol 2013; 32:853-61. [PMID: 23397147 DOI: 10.1007/s10067-013-2209-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2011] [Revised: 05/31/2012] [Accepted: 01/30/2013] [Indexed: 01/20/2023]
Abstract
Biologic antirheumatic drugs (BIO) have been reported to be potent therapeutic agents in the prevention of inflammatory joint destruction in rheumatoid arthritis (RA). The aim of this study was to investigate the immune-inflammatory cells, including Toll-like receptor (TLR)-equipped cells, in synovial tissue samples from RA patients on BIO compared to patients, who are only on conventional disease-modifying antirheumatic drug (DMARD). We analyzed immune-inflammatory cells in RA synovitis in patients of BIO group (n = 20) or DMARD group (n = 20). The grading scores of synovitis was 1.7 and 1.8 in each BIO and DMARD group and correlated best with the CD3(+) T (r = 0.71/0.70, p < 0.05) and CD20(+) B (r = 0.80/0.84, p < 0.05) cells in the both groups, but less well with the CD68(+) macrophages and S-100(+) dendritic cells (DCs). Interestingly, both T (116 vs. 242, p < 0.05) and B (80 vs. 142, p < 0.05) cell counts were lower in the BIO than in the DMARD group, whereas macrophage and DC counts did not differ. In contrast, the C-reactive protein (CRP) and disease activity score DAS28-CRP did not show clear-cut correlations with the inflammatory grade of the synovitis (r range, 0-0.35). Similar numbers of cells immunoreactive for TLR-1 to TLR-6 and TLR-9 were found in synovitis in both groups. Patients clinically responding to biologics might still have the potential of moderate/severe local joint inflammation, composed in particular of and possibly driven by the autoinflammatory TLR(+) cells.
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Abstract
B cells have been implicated both with pathogenic as well as protective capabilities in induction and regulation of autoimmune diseases. Rheumatoid arthritis (RA) is an autoimmune disease that occurs more often in women than men. A significant role of B cells as antibody producing and antigen-presenting cells has been demonstrated in RA. Predisposition to RA is associated with the presence of certain HLA class II alleles that share sequences with DRB1*0401. To determine the role of HLA genes and B cells in vivo, we have generated transgenic mice carrying HLA genes, DRB1*0401 and DQ8, known to be associated with susceptibility to RA. Humanized mice can be induced to develop arthritis that mimics human disease in clinical, histopathological and sex bias. Effect of hormones on immune cells and their function has been described in humans and mice and has been suggested to be the major reason for female bias of autoimmune diseases. An immune response to an antigen requires presentation by HLA molecules thus suggesting a critical role of MHC in combination with sex hormones in susceptibility to develop rheumatoid arthritis. Based on our observations, we hypothesize that modulation of B cells by estrogen, presentation of modified antigens by DR4 and production of antigen-specific B cell modulating cytokines leads to autoreactivity in females. These data suggest that considering patient's sex may be crucial in selecting the optimal treatment strategy. Humanized mice expressing RA susceptible and resistant haplotype provide a means to investigate mechanism sex-bias of arthritis and future strategies for therapy.
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Affiliation(s)
- David Luckey
- Department of Immunology, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA
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Ruhmann M, Piccinini AM, Kong PL, Midwood KS. Endogenous activation of adaptive immunity: tenascin-C drives interleukin-17 synthesis in murine arthritic joint disease. ACTA ACUST UNITED AC 2012; 64:2179-90. [PMID: 22275298 DOI: 10.1002/art.34401] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVE Rheumatoid arthritis is characterized by persistent synovial inflammation and progressive joint destruction, which are mediated by innate and adaptive immune responses. Cytokine blockade successfully treats some patient subsets; however, ∼50% do not respond to this approach. Targeting of pathogenic T lymphocytes is emerging as an effective alternative/complementary therapeutic strategy, yet the factors that control T cell activation in joint disease are not well understood. Tenascin-C is an arthritogenic extracellular matrix glycoprotein that is not expressed in healthy synovium but is elevated in the rheumatoid joint, where high levels are produced by myeloid cells. Among these cells, tenascin-C expression is most highly induced in activated dendritic cells (DCs). The aim of this study was to examine the role of tenascin-C in this cell type. METHODS We systematically compared the phenotype of DCs isolated from wild-type mice or mice with a targeted deletion of tenascin-C by assessing cell maturation, cytokine synthesis, and T cell polarization. RESULTS Dendritic cells derived from tenascin-C-null mice exhibited no defects in maturation; induction of the class II major histocompatibility complex and the costimulatory molecules CD40 and CD86 was unimpaired. Dendritic cells that did not express tenascin-C, however, produced lower levels of inflammatory cytokines than did cells from wild-type mice and exhibited specific defects in Th17 cell polarization. Moreover, tenascin-C-null mice displayed ablated levels of interleukin-17 in the joint during experimental arthritis. CONCLUSION These data demonstrate that tenascin-C is important in DC-mediated polarization of Th17 lymphocytes during inflammation and suggest a key role for this endogenous danger signal in driving adaptive immunity in erosive joint disease.
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Affiliation(s)
- Michaela Ruhmann
- Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology, and Musculoskeletal Sciences, University of Oxford, Oxford, UK
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Madan B, Goh KC, Hart S, William AD, Jayaraman R, Ethirajulu K, Dymock BW, Wood JM. SB1578, a novel inhibitor of JAK2, FLT3, and c-Fms for the treatment of rheumatoid arthritis. THE JOURNAL OF IMMUNOLOGY 2012; 189:4123-34. [PMID: 22962687 DOI: 10.4049/jimmunol.1200675] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
SB1578 is a novel, orally bioavailable JAK2 inhibitor with specificity for JAK2 within the JAK family and also potent activity against FLT3 and c-Fms. These three tyrosine kinases play a pivotal role in activation of pathways that underlie the pathogenesis of rheumatoid arthritis. SB1578 blocks the activation of these kinases and their downstream signaling in pertinent cells, leading to inhibition of pathological cellular responses. The biochemical and cellular activities of SB1578 translate into its high efficacy in two rodent models of arthritis. SB1578 not only prevents the onset of arthritis but is also potent in treating established disease in collagen-induced arthritis mice with beneficial effects on histopathological parameters of bone resorption and cartilage damage. SB1578 abrogates the inflammatory response and prevents the infiltration of macrophages and neutrophils into affected joints. It also leads to inhibition of Ag-presenting dendritic cells and inhibits the autoimmune component of the disease. In summary, SB1578 has a unique kinase spectrum, and its pharmacological profile provides a strong rationale for the ongoing clinical development in autoimmune diseases.
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Prevosto C, Goodall JC, Hill Gaston JS. Cytokine secretion by pathogen recognition receptor-stimulated dendritic cells in rheumatoid arthritis and ankylosing spondylitis. J Rheumatol 2012; 39:1918-28. [PMID: 22896020 DOI: 10.3899/jrheum.120208] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVE Interleukin 23 (IL-23) plays a major role in differentiation and survival of IL-17-secreting CD4+ Th17 cells. Having noted a higher frequency of Th17 cells in ankylosing spondylitis (AS) and rheumatoid arthritis (RA) than in healthy donors (HD), we investigated whether IL-23 secretion is increased in these conditions. METHODS Monocyte-derived dendritic cells (moDC) were obtained from peripheral blood of 17 HD, 16 patients with RA, and 30 patients with AS, and stimulated with ligands for several pathogen recognition receptors. Messenger RNA (mRNA) expression and cytokine secretion were analyzed by real-time polymerase chain reaction and ELISA, respectively. RESULTS The combination of ligands for Toll-like receptors (TLR) 7/8 and TLR3 led to synergistic secretion of both IL-23 and IL-12p70 from all subjects; similar synergy was seen with TLR2 ligands and curdlan. However, for both combinations, moDC from patients with RA produced significantly lower amounts of IL-23 than moDC from patients with AS; in contrast, IL-12p70 secretion did not differ. Similarly, tumor necrosis factor-α, IL-6, and IL-10 were secreted at comparable levels in all subjects, whereas CXCL8 and CCL3 production was actually enhanced in moDC of patients with RA. Equivalent levels of mRNA for both IL-23p19 and IL-12p35 subunits were found in moDC from all donors, suggesting posttranscriptional regulation of IL-23 production in RA. CONCLUSION Our observations show that IL-23 production is decreased in RA and maintained in AS. Because increased numbers of CD4+IL-17+ T cells are seen in both diseases, these observations imply that there are different mechanisms underlying chronic inflammation in these 2 forms of inflammatory arthritis.
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Affiliation(s)
- Claudia Prevosto
- Department of Medicine, University of Cambridge, and Addenbrooke's Hospital, Cambridge, UK
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80
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Carranza F, Falcón CR, Nuñez N, Knubel C, Correa SG, Bianco I, Maccioni M, Fretes R, Triquell MF, Motrán CC, Cervi L. Helminth antigens enable CpG-activated dendritic cells to inhibit the symptoms of collagen-induced arthritis through Foxp3+ regulatory T cells. PLoS One 2012; 7:e40356. [PMID: 22848374 PMCID: PMC3405066 DOI: 10.1371/journal.pone.0040356] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2011] [Accepted: 06/07/2012] [Indexed: 11/23/2022] Open
Abstract
Dendritic cells (DC) have the potential to control the outcome of autoimmunity by modulating the immune response. In this study, we tested the ability of Fasciola hepatica total extract (TE) to induce tolerogenic properties in CpG-ODN (CpG) maturated DC, to then evaluate the therapeutic potential of these cells to diminish the inflammatory response in collagen induced arthritis (CIA). DBA/1J mice were injected with TE plus CpG treated DC (T/C-DC) pulsed with bovine collagen II (CII) between two immunizations with CII and clinical scores CIA were determined. The levels of CII-specific IgG2 and IgG1 in sera, the histological analyses in the joints, the cytokine profile in the draining lymph node (DLN) cells and in the joints, and the number, and functionality of CD4+CD25+Foxp3+ T cells (Treg) were evaluated. Vaccination of mice with CII pulsed T/C-DC diminished the severity and incidence of CIA symptoms and the production of the inflammatory cytokine, while induced the production of anti-inflammatory cytokines. The therapeutic effect was mediated by Treg cells, since the adoptive transfer of CD4+CD25+ T cells, inhibited the inflammatory symptoms in CIA. The in vitro blockage of TGF-β in cultures of DLN cells plus CII pulsed T/C-DC inhibited the expansion of Treg cells. Vaccination with CII pulsed T/C-DC seems to be a very efficient approach to diminish exacerbated immune response in CIA, by inducing the development of Treg cells, and it is therefore an interesting candidate for a cell-based therapy for rheumatoid arthritis (RA).
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Affiliation(s)
- Franco Carranza
- Departamento de Bioquímica Clínica, CIBICI-CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Cristian Roberto Falcón
- Departamento de Bioquímica Clínica, CIBICI-CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Nicolás Nuñez
- Departamento de Bioquímica Clínica, CIBICI-CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Carolina Knubel
- Departamento de Bioquímica Clínica, CIBICI-CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Silvia Graciela Correa
- Departamento de Bioquímica Clínica, CIBICI-CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Ismael Bianco
- Centro de Excelencia en Productos y Procesos de la Provincia de Córdoba (CEPROCOR), Agencia Córdoba Ciencia, CONICET, Córdoba, Argentina
| | - Mariana Maccioni
- Departamento de Bioquímica Clínica, CIBICI-CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Ricardo Fretes
- Biología Celular, Histología y Embriología, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - María Fernanda Triquell
- Biología Celular, Histología y Embriología, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Claudia Cristina Motrán
- Departamento de Bioquímica Clínica, CIBICI-CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Laura Cervi
- Departamento de Bioquímica Clínica, CIBICI-CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- * E-mail:
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Lehner M, Kellert B, Proff J, Schmid MA, Diessenbacher P, Ensser A, Dörrie J, Schaft N, Leverkus M, Kämpgen E, Holter W. Autocrine TNF Is Critical for the Survival of Human Dendritic Cells by Regulating BAK, BCL-2, and FLIPL. THE JOURNAL OF IMMUNOLOGY 2012; 188:4810-8. [DOI: 10.4049/jimmunol.1101610] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Analysis of sirtuin 1 expression reveals a molecular explanation of IL-2-mediated reversal of T-cell tolerance. Proc Natl Acad Sci U S A 2012; 109:899-904. [PMID: 22219356 DOI: 10.1073/pnas.1118462109] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The type III histone deacetylase sirtuin 1 (Sirt1) is a suppressor of both innate and adoptive immune responses. We have recently found that Sirt1 expression is highly induced in anergic T cells. However, the transcriptional program to regulate Sirt1 expression in T cells remains uncharacterized. Here we report that the early responsive genes 2 and 3, which can be up-regulated by T-cell receptor-mediated activation of nuclear factor of activated T-cell transcription factors and are involved in peripheral T-cell tolerance, bind to the sirt1 promoter to transcript sirt1 mRNA. In addition, the forkhead transcription factor, FoxO3a, interacts with early responsive genes 2/3 on the sirt1 promoter to synergistically regulate Sirt1 expression. Interestingly, IL-2, a cytokine that can reverse T-cell anergy, suppresses sirt1 transcription by sequestering FoxO3a to the cytoplasm through activating the PI3K-AKT pathway. Expression of the constitutively active form of FoxO3a blocks IL-2-mediated reversal of T-cell tolerance by retaining sirt1 expression. Our findings here provide a molecular explanation of IL-2-mediated reversion of T-cell anergy.
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83
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Carregaro V, Sá-Nunes A, Cunha TM, Grespan R, Oliveira CJF, Lima-Junior DS, Costa DL, Verri WA, Milanezi CM, Pham VM, Brand DD, Valenzuela JG, Silva JS, Ribeiro JMC, Cunha FQ. Nucleosides from Phlebotomus papatasi salivary gland ameliorate murine collagen-induced arthritis by impairing dendritic cell functions. THE JOURNAL OF IMMUNOLOGY 2011; 187:4347-59. [PMID: 21930966 DOI: 10.4049/jimmunol.1003404] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Among several pharmacological compounds, Phlebotomine saliva contains substances with anti-inflammatory properties. In this article, we demonstrated the therapeutic activity of salivary gland extract (SGE) of Phlebotomus papatasi in an experimental model of arthritis (collagen-induced arthritis [CIA]) and identified the constituents responsible for such activity. Daily administration of SGE, initiated at disease onset, attenuated the severity of CIA, reducing the joint lesion and proinflammatory cytokine release. In vitro incubation of dendritic cells (DCs) with SGE limited specific CD4(+) Th17 cell response. We identified adenosine (ADO) and 5'AMP as the major salivary molecules responsible for anti-inflammatory activities. Pharmacologic inhibition of ADO A2(A) receptor or enzymatic catabolism of salivary nucleosides reversed the SGE-induced immunosuppressive effect. Importantly, CD73 (ecto-5'-nucleotidase enzyme) is expressed on DC surface during stage of activation, suggesting that ADO is also generated by 5'AMP metabolism. Moreover, both nucleosides mimicked SGE-induced anti-inflammatory activity upon DC function in vitro and attenuated establishment of CIA in vivo. We reveal that ADO and 5'AMP are present in pharmacological amounts in P. papatasi saliva and act preferentially on DC function, consequently reducing Th17 subset activation and suppressing the autoimmune response. Thus, it is plausible that these constituents might be promising therapeutic molecules to target immune inflammatory diseases.
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Affiliation(s)
- Vanessa Carregaro
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, 14049-900 São Paulo, Brazil
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84
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Zhao Y, Zhang A, Du H, Guo S, Ning B, Yang S. Tolerogenic dendritic cells and rheumatoid arthritis: current status and perspectives. Rheumatol Int 2011; 32:837-44. [PMID: 21904923 DOI: 10.1007/s00296-011-2133-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2011] [Accepted: 08/22/2011] [Indexed: 12/28/2022]
Abstract
Rheumatoid arthritis (RA) is a chronic autoimmune disease characterized by the influxation of synovia and synovial compartments with immune cells including dendritic cells (DCs). DCs that induce autoimmune tolerance are called tolerogenic DCs (tolDCs). As a promising immunotherapeutic strategy for RA, tolDCs have received increasing attention. In this review, we first introduce the significant role of tolDCs in autoimmune regulation and then describe the manipulation strategies to generate tolDCs; next, we summarize recent progress in the experimental application of tolDCs for RA therapy, and finally we discuss the perspectives of tolerogenic vaccination for the treatment for RA in clinic.
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85
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Ibarra JM, Quinones MP, Estrada CA, Jimenez F, Martinez HG, Ahuja SS. CD8α⁺ dendritic cells improve collagen-induced arthritis in CC chemokine receptor (CCR)-2 deficient mice. Immunobiology 2011; 216:971-8. [PMID: 21531476 PMCID: PMC3426926 DOI: 10.1016/j.imbio.2011.03.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2010] [Revised: 02/23/2011] [Accepted: 03/30/2011] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Dendritic cells (DCs) have long been recognized as potential therapeutic targets of rheumatoid arthritis (RA). Increasing evidence has showed that DCs are capable of suppressing autoimmunity by expanding FoxP3⁺ regulatory T cells (T(reg)), which in turn exert immunosuppression by increasing TGFβ-1. In the SKG mice, activated DC prime autoreactive T cells causing autoantibody production and an inflammatory arthritic response. Recently, we reported that CC-chemokine receptor-2 deficient (Ccr2⁻/⁻) mice had impaired DCs migration and reduced CD8α⁺ DCs in the C57Bl/6J mice strain and that these mice were more susceptible to collagen antibody-induced arthritis (CAIA), compared to wild type mice. To examine the mechanism by which DCs contribute to the increased susceptibility of arthritis in Ccr2⁻/⁻ mice, we tested the hypothesis that CD8α⁺ DCs are protective (tolerogenic) against autoimmune arthritis by examining the role of CD8α⁺ DCs in Ccr2⁻/⁻ and SKG mice. METHODS To examine the mechanism by which DCs defects lead to the development of arthritis, we used two murine models of experimental arthritis: collagen-induced arthritis (CIA) in DBA1/J mice and zymosan-induced arthritis in SKG mice. DBA1/J mice received recombinant fms-like tyrosine kinase 3 ligand (Flt3L) injections to expand endogenous DCs populations or adoptive transfers of CD8α⁺ DCs. RESULTS Flt3L-mediated expansion of endogenous CD8α⁺ DCs resulted in heightened susceptibility of CIA. In contrast, supplementation with exogenous CD8α⁺ DCs ameliorated arthritis in Ccr2⁻/⁻ mice and enhanced TGFβ1 production by T cells. Furthermore, SKG mice with genetic inactivation of CCR2 did not affect the numbers of DCs nor improve the arthritis phenotype. CONCLUSION CD8α⁺ DCs were tolerogenic to the development of arthritis. CD8α⁺ DCs deficiency heightened the sensitivity to arthritis in Ccr2⁻/⁻ mice. Ccr2 deficiency did not alter the arthritic phenotype in SKG mice suggesting the arthritis in Ccr2⁻/⁻ mice was T cell-independent.
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MESH Headings
- Adoptive Transfer
- Animals
- Arthritis, Experimental/genetics
- Arthritis, Experimental/immunology
- Arthritis, Experimental/metabolism
- Arthritis, Experimental/pathology
- Arthritis, Experimental/therapy
- Arthritis, Rheumatoid/genetics
- Arthritis, Rheumatoid/immunology
- Arthritis, Rheumatoid/metabolism
- Arthritis, Rheumatoid/pathology
- Arthritis, Rheumatoid/therapy
- CD8 Antigens/immunology
- Collagen Type II/administration & dosage
- Collagen Type II/adverse effects
- Collagen Type II/immunology
- Dendritic Cells/cytology
- Dendritic Cells/immunology
- Dendritic Cells/transplantation
- Disease Models, Animal
- Immune Tolerance/drug effects
- Immunoglobulins/analysis
- Immunoglobulins/biosynthesis
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Inbred DBA
- Mice, Knockout
- Receptors, CCR2/deficiency
- Receptors, CCR2/genetics
- Signal Transduction
- T-Lymphocytes, Regulatory/cytology
- T-Lymphocytes, Regulatory/drug effects
- T-Lymphocytes, Regulatory/immunology
- fms-Like Tyrosine Kinase 3/administration & dosage
- fms-Like Tyrosine Kinase 3/immunology
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Affiliation(s)
- Jessica M. Ibarra
- Department of Medicine, University of Texas Health Science Center at San Antonio; San Antonio, TX, 78229-3900, USA
| | - Marlon P. Quinones
- Department of Medicine, University of Texas Health Science Center at San Antonio; San Antonio, TX, 78229-3900, USA
- South Texas Veterans Health Care System, Audie L. Murphy Division, Veterans Administration Center for Research on AIDS and HIV-1 Infection San Antonio,TX
| | - Carlos A. Estrada
- Department of Medicine, University of Texas Health Science Center at San Antonio; San Antonio, TX, 78229-3900, USA
- South Texas Veterans Health Care System, Audie L. Murphy Division, Veterans Administration Center for Research on AIDS and HIV-1 Infection San Antonio,TX
| | - Fabio Jimenez
- Department of Medicine, University of Texas Health Science Center at San Antonio; San Antonio, TX, 78229-3900, USA
- South Texas Veterans Health Care System, Audie L. Murphy Division, Veterans Administration Center for Research on AIDS and HIV-1 Infection San Antonio,TX
| | - Hernan G. Martinez
- Department of Medicine, University of Texas Health Science Center at San Antonio; San Antonio, TX, 78229-3900, USA
- South Texas Veterans Health Care System, Audie L. Murphy Division, Veterans Administration Center for Research on AIDS and HIV-1 Infection San Antonio,TX
| | - Seema S. Ahuja
- Department of Medicine, University of Texas Health Science Center at San Antonio; San Antonio, TX, 78229-3900, USA
- South Texas Veterans Health Care System, Audie L. Murphy Division, Veterans Administration Center for Research on AIDS and HIV-1 Infection San Antonio,TX
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Yang Q, Xu S, Li X, Wang B, Wang X, Ma D, Yang L, Peng J, Hou M. Pathway of Toll-like receptor 7/B cell activating factor/B cell activating factor receptor plays a role in immune thrombocytopenia in vivo. PLoS One 2011; 6:e22708. [PMID: 21818370 PMCID: PMC3144916 DOI: 10.1371/journal.pone.0022708] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2011] [Accepted: 06/28/2011] [Indexed: 11/18/2022] Open
Abstract
Immune thrombocytopenia (ITP) is an autoimmune disorder characterized by anti-platelet autoantibody-mediated platelet destruction. Antigen-presenting cell (APC) dysfunction is considered to play crucial roles in ITP. However, how APC affects autoreactive B cells in ITP is still unknown. Using a mouse model of immune thrombocytopenia, we demonstrated an increase in levels of TLR7 in splenic mononuclear cells (SMCs). Using both TLR7 agonist and TLR7 silencing lentivirus, we found stimulation of TLR7 decreased platelet counts and increased levels of platelet-associated IgG (PAIgG) in ITP mice, which correlates TLR7 with platelet destruction by autoantibodies. Levels of serum BAFF increased significantly in ITP mice and stimulation of TLR7 promoted secretion of BAFF. Among the three BAFF receptors, only BAFF receptor (BAFF-R) increased in ITP mice. However, activation of TLR7 showed no effect on the expression of BAFF receptors. These findings indicate that upregulation of TLR7 may augment BAFF secretion by APC and through ligation of BAFF-R promote autoreactive B cell survival and thus anti-platelet autoantibody production. The pathway of TLR7/BAFF/BAFF-R provides us with an explanation of how activation of APC affects autoantibody production by B cells in ITP and thus might provide a reasonable therapeutic strategy for ITP.
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Affiliation(s)
- Qing Yang
- Department of Parasitology, Shandong University School of Medicine, Jinan, China
- Haematology Oncology Centre, Qilu Hospital, Shandong University, Jinan, China
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Public Health, Qilu Hospital, Shandong University, Jinan, China
| | - Shuqian Xu
- Haematology Oncology Centre, Qilu Hospital, Shandong University, Jinan, China
| | - Xiaofang Li
- Hematology Department, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Bo Wang
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Public Health, Qilu Hospital, Shandong University, Jinan, China
- Department of Traditional Chinese Medicine, Qilu Hospital, Shandong University, Jinan, China
| | - Xuping Wang
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Public Health, Qilu Hospital, Shandong University, Jinan, China
| | - Daoxin Ma
- Haematology Oncology Centre, Qilu Hospital, Shandong University, Jinan, China
| | - Lei Yang
- Haematology Oncology Centre, Qilu Hospital, Shandong University, Jinan, China
| | - Jun Peng
- Haematology Oncology Centre, Qilu Hospital, Shandong University, Jinan, China
| | - Ming Hou
- Haematology Oncology Centre, Qilu Hospital, Shandong University, Jinan, China
- * E-mail:
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87
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Mascanfroni ID, Cerliani JP, Dergan-Dylon S, Croci DO, Ilarregui JM, Rabinovich GA. Endogenous lectins shape the function of dendritic cells and tailor adaptive immunity: Mechanisms and biomedical applications. Int Immunopharmacol 2011; 11:833-41. [DOI: 10.1016/j.intimp.2011.01.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2011] [Accepted: 01/14/2011] [Indexed: 11/27/2022]
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88
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Peeva E. Reproductive immunology: a focus on the role of female sex hormones and other gender-related factors. Clin Rev Allergy Immunol 2011; 40:1-7. [PMID: 20697838 DOI: 10.1007/s12016-010-8209-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Reproductive immunology has attracted the attention of researchers interested in fertility and pregnancy as well as those interested in immunity and autoimmunity. Over the past couple of decades, a wealth of data on the immune-reproductive interactions has been generated. This issue of the Journal will examine several topics including the role of immune factors in the induction of anti-Ro antibody-mediated autoimmunity in neonates and the immunological effects of gender and sex hormones. The possible implications of the research reviewed here for the development of novel therapeutic approaches are also addressed.
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Affiliation(s)
- Elena Peeva
- Department of Medicine, Division of Rheumatology, Albert Einstein College of Medicine, Bronx, NY, USA.
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89
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Dexamethasone inhibits immunoreactivity of dendritic cells in patients with chronic idiopathic thrombocytopenic purpura. Blood Coagul Fibrinolysis 2011; 21:564-7. [PMID: 20581660 DOI: 10.1097/mbc.0b013e32833c2b8c] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The objective of this study was to investigate the possible effects of dexamethasone treatment on the immunoreactivity of dendritic cells in patients with chronic idiopathic thrombocytopenic purpura (ITP). Thirty-six newly diagnosed patients with chronic ITP received an oral high dose of dexamethasone (HD-DXM) at single daily doses of 40 mg for 4 consecutive days. The CD14 leukocytes isolated from the 21 remission patients and 10 normal controls were stimulated by recombinant human granulocyte-macrophage colony-stimulating factor and rhIL-4. The surface antigens of the dendritic cells were analyzed by flow cytometry and the level of IL-12p70 in the supernatant was detected by enzyme-linked immunosorbent assay. In ITP patients, the expression of both CD80 and CD86 in dendritic cells were significantly increased compared with those of the normal controls (51.60 +/- 13.47 vs. 36.03 +/- 15.43%, 61.50 +/- 15.93 vs. 40.28 +/- 11.49%, respectively; P < 0.05). After HD-DXM treatment, both CD80 and CD86 were decreased to levels comparable to normal controls (P > 0.05). The level of IL-12p70 in ITP patients was significantly higher (67.52 +/- 14.43 pg/ml) than the controls (39.78 +/- 10.03 pg/ml, P < 0.05). After treatment, IL-12p70 was reduced to 43.90 +/- 8.49 pg/ml with no significant differences between ITP group and control (P > 0.05). Dendritic cells and their cytokine secretion play important roles in ITP, and DXM may achieve its therapeutic effect on ITP by inhibiting immune responses through suppressing the function of dendritic cells.
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90
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Zhang Y, Zhang C. Role of dendritic cells in cardiovascular diseases. World J Cardiol 2010; 2:357-64. [PMID: 21179302 PMCID: PMC3006471 DOI: 10.4330/wjc.v2.i11.357] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2010] [Revised: 10/24/2010] [Accepted: 10/31/2010] [Indexed: 02/06/2023] Open
Abstract
Dendritic cells (DCs) are potent antigen-presenting cells that bridge innate and adaptive immune responses. Recent work has elucidated the DC life cycle, including several important stages such as maturation, migration and homeostasis, as well as DC classification and subsets/locations, which provided etiological insights on the role of DCs in disease processes. DCs have a close relationship to endothelial cells and they interact with each other to maintain immunity. DCs are deposited in the atherosclerotic plaque and contribute to the pathogenesis of atherosclerosis. In addition, the necrotic cardiac cells induced by ischemia activate DCs by Toll-like receptors, which initiate innate and adaptive immune responses to renal, hepatic and cardiac ischemia reperfusion injury (IRI). Furthermore, DCs are involved in the acute/chronic rejection of solid organ transplantation and mediate transplant tolerance as well. Advancing our knowledge of the biology of DCs will aid development of new approaches to treat many cardiovascular diseases, including atherosclerosis, cardiac IRI and transplantation.
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Affiliation(s)
- Yi Zhang
- Yi Zhang, Cuihua Zhang, Department of Internal Medicine, Medical Pharmacology and Physiology and Nutritional Sciences, Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO 65211, United States
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Abstract
Few, if any, areas of medical therapeutics have witnessed such dramatic changes as those that have occurred in the therapy of rheumatoid arthritis (RA) during the past two decades. Improvements in clinical trials methodologies, the introduction of no fewer than nine biologic agents with distinct mechanisms of action, and the development of better strategies for the use of such agents have all contributed to the new age in RA therapeutics. Here, we review these developments and attempt to describe the current landscape of RA therapy in terms of available treatments, agreed-upon principles of RA management, as well as some important controversies in this field. Despite the great pace at which developments are moving, a treatment-free remission for patients with RA remains an elusive goal and unmet medical needs remain. The quest for better therapies for this potentially devastating disease is still as important as ever; research in this exciting area is ongoing, and it is reasonable to hope that, during the next decade, developments will lead to improved, rationally designed, targeted therapies for RA.
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