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Feng Z, Xiao H, Wang X, Niu Y, Zhao D, Tian C, Wang S, Peng B, Yang F, Geng B, Guo M, Sheng X, Xia Y. Unraveling Key m 6A Modification Regulators Signatures in Postmenopausal Osteoporosis through Bioinformatics and Experimental Verification. Orthop Surg 2024; 16:1418-1433. [PMID: 38658320 PMCID: PMC11144519 DOI: 10.1111/os.14064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 03/21/2024] [Accepted: 03/26/2024] [Indexed: 04/26/2024] Open
Abstract
OBJECTIVE Bone marrow mesenchymal stem cells (BMSCs) show significant potential for osteogenic differentiation. However, the underlying mechanisms of osteogenic capability in osteoporosis-derived BMSCs (OP-BMSCs) remain unclear. This study aims to explore the impact of YTHDF3 (YTH N6-methyladenosine RNA binding protein 3) on the osteogenic traits of OP-BMSCs and identify potential therapeutic targets to boost their bone formation ability. METHODS We examined microarray datasets (GSE35956 and GSE35958) from the Gene Expression Omnibus (GEO) to identify potential m6A regulators in osteoporosis (OP). Employing differential, protein interaction, and machine learning analyses, we pinpointed critical hub genes linked to OP. We further probed the relationship between these genes and OP using single-cell analysis, immune infiltration assessment, and Mendelian randomization. Our in vivo and in vitro experiments validated the expression and functionality of the key hub gene. RESULTS Differential analysis revealed seven key hub genes related to OP, with YTHDF3 as a central player, supported by protein interaction analysis and machine learning methodologies. Subsequent single-cell, immune infiltration, and Mendelian randomization studies consistently validated YTHDF3's significant link to osteoporosis. YTHDF3 levels are significantly reduced in femoral head tissue from postmenopausal osteoporosis (PMOP) patients and femoral bone tissue from PMOP mice. Additionally, silencing YTHDF3 in OP-BMSCs substantially impedes their proliferation and differentiation. CONCLUSION YTHDF3 may be implicated in the pathogenesis of OP by regulating the proliferation and osteogenic differentiation of OP-BMSCs.
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Affiliation(s)
- Zhi‐wei Feng
- Department of OrthopaedicsLanzhou University Second HospitalLanzhouChina
- Department of OrthopaedicsNanchong Central Hospital, The Second Clinical Institute of North Sichuan Medical CollegeNanchongChina
- Gansu Province Intelligent Orthopedics Industry Technology CenterLanzhouChina
- Gansu Province Orthopaedic Clinical Medicine Research CenterLanzhouChina
| | - He‐fang Xiao
- Department of OrthopaedicsLanzhou University Second HospitalLanzhouChina
- Gansu Province Intelligent Orthopedics Industry Technology CenterLanzhouChina
- Gansu Province Orthopaedic Clinical Medicine Research CenterLanzhouChina
| | - Xing‐wen Wang
- Department of OrthopaedicsLanzhou University Second HospitalLanzhouChina
- Gansu Province Intelligent Orthopedics Industry Technology CenterLanzhouChina
- Gansu Province Orthopaedic Clinical Medicine Research CenterLanzhouChina
| | - Yong‐kang Niu
- Department of OrthopaedicsLanzhou University Second HospitalLanzhouChina
- Gansu Province Intelligent Orthopedics Industry Technology CenterLanzhouChina
- Gansu Province Orthopaedic Clinical Medicine Research CenterLanzhouChina
| | - Da‐cheng Zhao
- Department of OrthopaedicsLanzhou University Second HospitalLanzhouChina
- Gansu Province Intelligent Orthopedics Industry Technology CenterLanzhouChina
- Gansu Province Orthopaedic Clinical Medicine Research CenterLanzhouChina
| | - Cong Tian
- Department of OrthopaedicsLanzhou University Second HospitalLanzhouChina
- Gansu Province Intelligent Orthopedics Industry Technology CenterLanzhouChina
- Gansu Province Orthopaedic Clinical Medicine Research CenterLanzhouChina
| | - Sheng‐hong Wang
- Department of OrthopaedicsLanzhou University Second HospitalLanzhouChina
- Gansu Province Intelligent Orthopedics Industry Technology CenterLanzhouChina
- Gansu Province Orthopaedic Clinical Medicine Research CenterLanzhouChina
| | - Bo Peng
- Department of OrthopaedicsLanzhou University Second HospitalLanzhouChina
- Gansu Province Intelligent Orthopedics Industry Technology CenterLanzhouChina
- Gansu Province Orthopaedic Clinical Medicine Research CenterLanzhouChina
| | - Fei Yang
- Department of OrthopaedicsLanzhou University Second HospitalLanzhouChina
- Department of OrthopaedicsNanchong Central Hospital, The Second Clinical Institute of North Sichuan Medical CollegeNanchongChina
- Gansu Province Intelligent Orthopedics Industry Technology CenterLanzhouChina
- Gansu Province Orthopaedic Clinical Medicine Research CenterLanzhouChina
| | - Bin Geng
- Department of OrthopaedicsLanzhou University Second HospitalLanzhouChina
- Gansu Province Intelligent Orthopedics Industry Technology CenterLanzhouChina
- Gansu Province Orthopaedic Clinical Medicine Research CenterLanzhouChina
| | - Ming‐gang Guo
- Department of OrthopaedicsNanchong Central Hospital, The Second Clinical Institute of North Sichuan Medical CollegeNanchongChina
| | - Xiao‐yun Sheng
- Department of OrthopaedicsLanzhou University Second HospitalLanzhouChina
- Gansu Province Intelligent Orthopedics Industry Technology CenterLanzhouChina
- Gansu Province Orthopaedic Clinical Medicine Research CenterLanzhouChina
| | - Ya‐yi Xia
- Department of OrthopaedicsLanzhou University Second HospitalLanzhouChina
- Gansu Province Intelligent Orthopedics Industry Technology CenterLanzhouChina
- Gansu Province Orthopaedic Clinical Medicine Research CenterLanzhouChina
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Guzik TJ, Nosalski R, Maffia P, Drummond GR. Immune and inflammatory mechanisms in hypertension. Nat Rev Cardiol 2024; 21:396-416. [PMID: 38172242 DOI: 10.1038/s41569-023-00964-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/20/2023] [Indexed: 01/05/2024]
Abstract
Hypertension is a global health problem, with >1.3 billion individuals with high blood pressure worldwide. In this Review, we present an inflammatory paradigm for hypertension, emphasizing the crucial roles of immune cells, cytokines and chemokines in disease initiation and progression. T cells, monocytes, macrophages, dendritic cells, B cells and natural killer cells are all implicated in hypertension. Neoantigens, the NLRP3 inflammasome and increased sympathetic outflow, as well as cytokines (including IL-6, IL-7, IL-15, IL-18 and IL-21) and a high-salt environment, can contribute to immune activation in hypertension. The activated immune cells migrate to target organs such as arteries (especially the perivascular fat and adventitia), kidneys, the heart and the brain, where they release effector cytokines that elevate blood pressure and cause vascular remodelling, renal damage, cardiac hypertrophy, cognitive impairment and dementia. IL-17 secreted by CD4+ T helper 17 cells and γδ T cells, and interferon-γ and tumour necrosis factor secreted by immunosenescent CD8+ T cells, exert crucial effector roles in hypertension, whereas IL-10 and regulatory T cells are protective. Effector mediators impair nitric oxide bioavailability, leading to endothelial dysfunction and increased vascular contractility. Inflammatory effector mediators also alter renal sodium and water balance and promote renal fibrosis. These mechanisms link hypertension with obesity, autoimmunity, periodontitis and COVID-19. A comprehensive understanding of the immune and inflammatory mechanisms of hypertension is crucial for safely and effectively translating the findings to clinical practice.
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Affiliation(s)
- Tomasz J Guzik
- Centre for Cardiovascular Sciences, University of Edinburgh, Edinburgh, UK.
- Department of Medicine and Omicron Medical Genomics Laboratory, Jagiellonian University, Collegium Medicum, Kraków, Poland.
- Africa-Europe Cluster of Research Excellence (CoRE) in Non-Communicable Diseases & Multimorbidity, African Research Universities Alliance ARUA & The Guild, Glasgow, UK.
| | - Ryszard Nosalski
- Centre for Cardiovascular Sciences, University of Edinburgh, Edinburgh, UK
| | - Pasquale Maffia
- Africa-Europe Cluster of Research Excellence (CoRE) in Non-Communicable Diseases & Multimorbidity, African Research Universities Alliance ARUA & The Guild, Glasgow, UK
- School of Infection & Immunity, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Grant R Drummond
- Department of Microbiology, Anatomy, Physiology and Pharmacology, La Trobe University, Melbourne, Victoria, Australia
- Centre for Cardiovascular Biology and Disease Research, La Trobe University, Melbourne, Victoria, Australia
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Soleimani Damaneh M, Aryaeian N, Khajoenia S, Azadbakht L, Hosseini-Baharanchi FS. The association between dietary intake of branched-chain amino acids and odds and severity of rheumatoid arthritis. Sci Rep 2024; 14:6309. [PMID: 38491066 PMCID: PMC10943023 DOI: 10.1038/s41598-024-56610-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 03/08/2024] [Indexed: 03/18/2024] Open
Abstract
This case-control study investigated the link between dietary branched-chain amino acids (BCAAs) and the risk and severity of rheumatoid arthritis (RA). We assessed dietary BCAA intake in 95 RA patients and 190 matched controls using a food frequency questionnaire. We also assessed the disease severity using the disease activity score 28 (DAS-28), ESR, VAS, morning stiffness, and tender and swollen joints. Higher BCAA intake, expressed as a percentage of total protein, was significantly associated with increased risk of RA for total BCAAs (OR 2.14, 95% CI 1.53-3.00, P < 0.001), leucine (OR 2.40, 95% CI 1.70-3.38, P < 0.001), isoleucine (OR 2.04, 95% CI 1.46-2.85, P < 0.001), and valine (OR 1.87, 95% CI 1.35-2.59, P < 0.001). These associations remained significant even after adjusting for potential confounders (P < 0.001). However, BCAA intake did not show any significant association with RA severity in either crude or multivariate models (P > 0.05). Our findings suggest that higher dietary BCAA intake may contribute to the development of RA, but further research is needed to confirm these observations and explore the underlying mechanisms.
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Affiliation(s)
| | - Naheed Aryaeian
- Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran.
| | - Shole Khajoenia
- Department of Clinical Science, Faculty of Medicine, Medical Science University of Jiroft, Jiroft, Iran
| | - Leila Azadbakht
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
- Diabetes Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
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Kamińska J, Maciejczyk M, Ćwiklińska A, Matowicka-Karna J, Koper-Lenkiewicz OM. Pro-Inflammatory and Anti-Inflammatory Cytokines Levels are Significantly Altered in Cerebrospinal Fluid of Unruptured Intracranial Aneurysm (UIA) Patients. J Inflamm Res 2022; 15:6245-6261. [PMID: 36386592 PMCID: PMC9664915 DOI: 10.2147/jir.s380524] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 10/25/2022] [Indexed: 11/12/2022] Open
Abstract
Introduction Identifying all the relevant “players” in the formation and development of brain aneurysms may help understand the mechanisms responsible for the formation of an aneurysm, as well as in the search for non-invasive targets for aneurysm pharmacotherapy. Aim The evaluation of the concentration of pro-inflammatory and anti-inflammatory cytokines in cerebrospinal fluid (CSF) and serum of patients with unruptured intracranial aneurysms (UIA) in comparison to individuals without vascular lesions in the brain. Methods The concentration of 27 proteins in the CSF and serum of UIA patients (N = 40) and individuals without vascular lesions in the brain (N = 15) was evaluated using a multiplex ELISA kit (Bio-Plex Pro Human Cytokine 27-Plex Panel). Results In the CSF 13 out of 27 proteins evaluated presented a concentration 1.36-fold or greater in UIA patients in comparison to the control group. Significantly higher were IL-1β, IL-1ra, IL-2, IL-4, IL-5, IL-7, IL-8, IL-12, IL-13, TNF-α, INF-γ, MCP-1, and VEGF. In the serum none of the proteins evaluated significantly differ between UIA patients and the control group. The correlation coefficient analysis showed that CSF IL-1β, IL-8, and TNF-α positively, while IL-13 negatively correlated with the size of aneurysms. CSF IL-6 and MCP-1 concentrations positively correlated with the number of aneurysms. Conclusion In patients with UIA, pro-inflammatory and anti-inflammatory mechanisms are activated simultaneously, because the concentration of promoting and suppressing inflammatory response proteins was significantly higher in CSF of UIA patients compared to the control group. The preventive therapy of brain aneurysm development should be focused on IL-1β, IL-6, IL-8, MCP-1, and TNF-α, the concentration of which in CSF positively correlated with the size and number of aneurysms.
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Affiliation(s)
- Joanna Kamińska
- Department of Clinical Laboratory Diagnostics, Medical University of Białystok, Białystok, Poland
- Correspondence: Joanna Kamińska, Department of Clinical Laboratory Diagnostics, Medical University of Białystok, 15A Jerzego Waszyngtona St, Białystok, 15-269S, Poland, Tel/Fax + 48 85 7468584, Email
| | - Mateusz Maciejczyk
- Department of Hygiene, Epidemiology, and Ergonomics, Medical University of Białystok, Białystok, Poland
| | | | - Joanna Matowicka-Karna
- Department of Clinical Laboratory Diagnostics, Medical University of Białystok, Białystok, Poland
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Meyer A, Parmar PJ, Shahrara S. Significance of IL-7 and IL-7R in RA and autoimmunity. Autoimmun Rev 2022; 21:103120. [PMID: 35595051 PMCID: PMC9987213 DOI: 10.1016/j.autrev.2022.103120] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 05/15/2022] [Indexed: 11/02/2022]
Abstract
While physiological levels of IL-7 are essential for T cell proliferation, survival and co-stimulation, its escalated concentration has been associated with autoimmune diseases such as Rheumatoid arthritis (RA). Expression of IL-7 and IL-7R in RA monocytes is linked to disease activity score and TNF transcription. TNF stimulation can modulate IL-7 secretion and IL-7R frequency in myeloid cells, however, only IL-7R transcription levels are downregulated in anti-TNF responsive patients. Elevated levels of IL-7 in RA synovial tissue and fluid are involved in attracting RA monocytes into the inflammatory joints and remodeling them into proinflammatory macrophages and mature osteoclasts. Further, IL-7 amplification of RA Th1 cell differentiation and IFNγ secretion, can directly prime myeloid IL-7R expression and thereby exacerbate IL-7-mediated joint inflammatory and erosive imprints. In parallel, IL-7 accentuates joint angiogenesis by expanding the production of proangiogenic factors from RA macrophages and endothelial cells. In preclinical models, blockade of IL-7 or IL-7R can effectively impair joint inflammation, osteoclast formation, and neovascularization primarily by impeding monocyte and endothelial cell infiltration as well as inhibition of pro-inflammatory macrophage and Th1/Th17 cell differentiation. In conclusion, disruption of IL-7/IL-7R signaling can uniquely intercept the crosstalk between RA myeloid and lymphoid cells in their ability to trigger neovascularization.
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Affiliation(s)
- Anja Meyer
- Jesse Brown VA Medical Center, Chicago, IL, USA; Department of Medicine, Division of Rheumatology, the University of Illinois at Chicago, IL, USA
| | - Prashant J Parmar
- Department of Medicine, Division of Rheumatology, the University of Illinois at Chicago, IL, USA
| | - Shiva Shahrara
- Jesse Brown VA Medical Center, Chicago, IL, USA; Department of Medicine, Division of Rheumatology, the University of Illinois at Chicago, IL, USA.
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Estrogen-mediated downregulation of HIF-1α signaling in B lymphocytes influences postmenopausal bone loss. Bone Res 2022; 10:15. [PMID: 35177582 PMCID: PMC8854586 DOI: 10.1038/s41413-022-00189-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 10/18/2021] [Accepted: 12/07/2021] [Indexed: 12/13/2022] Open
Abstract
In the bone marrow, B cells and bone-resorbing osteoclasts colocalize and form a specific microenvironment. How B cells functionally influence osteoclasts and bone architecture is poorly understood. Using genetically modified mice and high-throughput analyses, we demonstrate that prolonged HIF-1α signaling in B cells leads to enhanced RANKL production and osteoclast formation. In addition, deletion of HIF-1α in B cells prevents estrogen deficiency-induced bone loss in mice. Mechanistically, estrogen controls HIF-1α protein stabilization through HSP70-mediated degradation in bone marrow B cells. The stabilization of HIF-1α protein in HSP70-deficient bone marrow B cells promotes RANKL production and osteoclastogenesis. Induction of HSP70 expression by geranylgeranylacetone (GGA) administration alleviates ovariectomy-induced osteoporosis. Moreover, RANKL gene expression has a positive correlation with HIF1A expression in human B cells. In conclusion, HIF-1α signaling in B cells is crucial for the control of osteoclastogenesis, and the HSP70/HIF-1α axis may serve as a new therapeutic target for osteoporosis.
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Makuch S, Więcek K, Woźniak M. The Immunomodulatory and Anti-Inflammatory Effect of Curcumin on Immune Cell Populations, Cytokines, and In Vivo Models of Rheumatoid Arthritis. Pharmaceuticals (Basel) 2021; 14:ph14040309. [PMID: 33915757 PMCID: PMC8065689 DOI: 10.3390/ph14040309] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 03/26/2021] [Accepted: 03/29/2021] [Indexed: 02/07/2023] Open
Abstract
Rheumatoid arthritis (RA) is a widespread chronic autoimmune disorder affecting the joints, causing irreversible cartilage, synovium, and bone degradation. During the course of the disease, many immune and joint cells are activated, causing inflammation. Immune cells including macrophages, lymphocytes, neutrophils, mast cells, natural killer cells, innate lymphoid cells, as well as synovial tissue cells, like fibroblast-like synoviocytes, chondrocytes, and osteoclasts secrete different proinflammatory factors, including many cytokines, angiogenesis-stimulating molecules and others. Recent studies reveal that curcumin, a natural dietary anti-inflammatory compound, can modulate the response of the cells engaging in RA course. This review comprises detailed data about the pathogenesis and inflammation process in rheumatoid arthritis and demonstrates scientific investigations about the molecular interactions between curcumin and immune cells responsible for rheumatoid arthritis development to discuss this herbal drug’s immunoregulatory role in RA treatment.
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Affiliation(s)
- Sebastian Makuch
- Department of Pathology, Wroclaw Medical University, 50-367 Wroclaw, Poland;
| | - Kamil Więcek
- Department of Biotechnology, Wroclaw University, 50-383 Wroclaw, Poland;
| | - Marta Woźniak
- Department of Pathology, Wroclaw Medical University, 50-367 Wroclaw, Poland;
- Correspondence:
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Chen X, Liu G, Wang S, Zhang H, Xue P. Machine learning analysis of gene expression profile reveals a novel diagnostic signature for osteoporosis. J Orthop Surg Res 2021; 16:189. [PMID: 33722258 PMCID: PMC7958453 DOI: 10.1186/s13018-021-02329-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 03/01/2021] [Indexed: 01/25/2023] Open
Abstract
Background Osteoporosis (OP) is increasingly prevalent with the aging of the world population. It is urgent to identify efficient diagnostic signatures for the clinical application. Method We downloaded the mRNA profile of 90 peripheral blood samples with or without OP from GEO database (Number: GSE152073). Weighted gene co-expression network analysis (WGCNA) was used to reveal the correlation among genes in all samples. GO term and KEGG pathway enrichment analysis was performed via the clusterProfiler R package. STRING database was applied to screen the interaction pairs among proteins. Protein–protein interaction (PPI) network was visualized based on Cytoscape, and the key genes were screened using the cytoHubba plug-in. The diagnostic model based on these key genes was constructed, and 5-fold cross validation method was applied to evaluate its reliability. Results A gene module consisted of 176 genes predicted to be associated with the occurrence of OP was identified. A total of 16 significantly enriched GO terms and 1 significantly enriched KEGG pathway were obtained based on the 176 genes. The top 50 key genes in the PPI network were identified. Then 22 genes were screened based on stepwise regression analysis from the 50 key genes. Of which, 9 genes were further screened out by multivariate regression analysis with the significant threshold of P value < 0.01. The diagnostic model was established based on the optimal 9 key genes, which efficiently separated the normal samples and OP samples. Conclusion A diagnostic model established based on nine key genes could reliably separate OP patients from healthy subjects, which provided novel lightings on the diagnostic research of OP. Supplementary Information The online version contains supplementary material available at 10.1186/s13018-021-02329-1.
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Affiliation(s)
- Xinlei Chen
- Department of Orthopedics, Zibo Central Hospital, Zibo, 255000, Shandong, China
| | - Guangping Liu
- Department of Orthopedics, Zibo Central Hospital, Zibo, 255000, Shandong, China
| | - Shuxiang Wang
- Department of Orthopedics, Zibo Central Hospital, Zibo, 255000, Shandong, China
| | - Haiyang Zhang
- Department of Orthopedics, Zibo Central Hospital, Zibo, 255000, Shandong, China
| | - Peng Xue
- Department of Orthopedics, Zibo Central Hospital, Zibo, 255000, Shandong, China.
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Kim SJ, Chang HJ, Volin MV, Umar S, Van Raemdonck K, Chevalier A, Palasiewicz K, Christman JW, Volkov S, Arami S, Maz M, Mehta A, Zomorrodi RK, Fox DA, Sweiss N, Shahrara S. Macrophages are the primary effector cells in IL-7-induced arthritis. Cell Mol Immunol 2020; 17:728-740. [PMID: 31197255 PMCID: PMC7331600 DOI: 10.1038/s41423-019-0235-z] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 04/10/2019] [Indexed: 12/16/2022] Open
Abstract
Synovial macrophages are crucial in the development of joint inflammation and bone damage; however, the pathways that control macrophage remodeling in inflammatory M1 cells or bone-eroding osteoclasts are not fully understood. We determined that elevated IL-7R/CD127 expression is the hallmark of rheumatoid arthritis (RA) M1 macrophages and that these cells are highly responsive to interleukin-7 (IL-7)-driven osteoclastogenesis. We established that lipopolysaccharide (LPS), interferon-γ (IFNγ), and tumor necrosis factor-α (TNFα), the classic M1 macrophage mediators, enhance IL-7R expression in RA and murine macrophages. The local expression of IL-7 provokes arthritis, predominantly through escalating the number of F480+iNOS+ cells rather than CD3+ T cells. Ectopic LPS injection stabilizes IL-7-induced arthritis by increasing myeloid IL-7R expression, in part via IFNγ induction. Hence, in RAG-/- mice, IL-7-mediated arthritis is suppressed because of the reduction in myeloid IL-7R expression due to the lack of IFNγ. Moreover, the amelioration of IL-7-induced arthritis by anti-TNF therapy is due to a decrease in the number of cells in the unique F480+iNOS+IL-7R+CCL5+ subset, with no impact on the F480+Arginase+ cell or CD3+ T cell frequency. Consistent with the preclinical findings, the findings of a phase 4 study performed with RA patients following 6 months of anti-TNF therapy revealed that IL-7R expression was reduced without affecting the levels of IL-7. This study shifts the paradigm by discovering that IL-7-induced arthritis is dependent on F480+iNOS+IL-7R+CCL5+ cell function, which activates TH-1 cells to amplify myeloid IL-7R expression and disease severity.
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Affiliation(s)
- Seung-Jae Kim
- Division of Rheumatology, Jesse Brown VA, Medical Center, Chicago, IL, 60612, USA
- Department of Medicine, Division of Rheumatology, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Huan J Chang
- Division of Rheumatology, Jesse Brown VA, Medical Center, Chicago, IL, 60612, USA
- Department of Medicine, Division of Rheumatology, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Michael V Volin
- Department of Microbiology and Immunology, Chicago College of Osteopathic Medicine, Midwestern University, Downers Grove, IL, 60515, USA
| | - Sadiq Umar
- Division of Rheumatology, Jesse Brown VA, Medical Center, Chicago, IL, 60612, USA
- Department of Medicine, Division of Rheumatology, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Katrien Van Raemdonck
- Division of Rheumatology, Jesse Brown VA, Medical Center, Chicago, IL, 60612, USA
- Department of Medicine, Division of Rheumatology, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Aimee Chevalier
- Department of Medicine, Division of Rheumatology, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Karol Palasiewicz
- Division of Rheumatology, Jesse Brown VA, Medical Center, Chicago, IL, 60612, USA
- Department of Medicine, Division of Rheumatology, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - John W Christman
- Pulmonary, Critical Care and Sleep Medicine, Ohio State University Wexner Medical Center, Davis Heart and Lung Research Institute, Columbus, OH, 43210, USA
| | - Suncica Volkov
- Department of Medicine, Division of Rheumatology, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Shiva Arami
- Division of Rheumatology, Jesse Brown VA, Medical Center, Chicago, IL, 60612, USA
- Department of Medicine, Division of Rheumatology, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Mehrdad Maz
- Division of Allergy, Clinical Immunology and Rheumatology, The University of Kansas Medical Center, Kansas City, KS, 66160, USA
| | - Anjali Mehta
- Division of Rheumatology, Jesse Brown VA, Medical Center, Chicago, IL, 60612, USA
- Department of Medicine, Division of Rheumatology, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Ryan K Zomorrodi
- Department of Medicine, Division of Rheumatology, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - David A Fox
- Division of Rheumatology and Clinical Autoimmunity Center of Excellence, University of Michigan, Ann Arbor, MI, 481096, USA
| | - Nadera Sweiss
- Department of Medicine, Division of Rheumatology, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Shiva Shahrara
- Division of Rheumatology, Jesse Brown VA, Medical Center, Chicago, IL, 60612, USA.
- Department of Medicine, Division of Rheumatology, University of Illinois at Chicago, Chicago, IL, 60612, USA.
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Cancer Conditioned Medium Modulates Functional and Phenotypic Properties of Human Decidua Parietalis Mesenchymal Stem/Stromal Cells. Tissue Eng Regen Med 2019; 16:615-630. [PMID: 31824824 DOI: 10.1007/s13770-019-00207-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Revised: 06/17/2019] [Accepted: 07/16/2019] [Indexed: 12/12/2022] Open
Abstract
Background Mesenchymal Stem/Stromal Cells (MSCs) from the decidua parietalis (DPMSCs) of human term placenta express several molecules with important biological and immunological properties. DPMSCs induce natural killer cell expression of inflammatory receptors and their cytotoxic activity against cancer cells. These properties make DPMSCs promising therapeutical agent for cancer. The successful development of MSCs as an anti-cancer therapeutic cells rely on their ability to function in a hostile inflammatory and oxidative stress cancer environment. Here, we studied the effects of conditioned medium obtained from the culture of breast cancer cells (CMMDA-231) on the functional and phenotypic properties of DPMSCs. Methods DPMSCs were cultured with CMMDA-231 and important functions of DPMSCs were measured. The effect of CMMDA-231 on DPMSC expression of several genes with different functions was also evaluated. Results DPMSCs were able to function in response to CMMDA-231, but with reduced proliferative and adhesive potentials. Preconditioning of DPMSCs with CMMDA-231 enhanced their adhesion while reducing their invasion. In addition, CMMDA-231 modulated DPMSC expression of many genes with various functional (i.e., proliferation, adhesion, and invasion) properties. DPMSCs also showed increased expression of genes with anti-cancer property. Conclusion These data show the ability of DPMSCs to survive and function in cancer environment. In addition, preconditioning of DPMSCs with CMMDA-231 enhanced their anti-cancer properties and thus demonstrating their potential as an anti-cancer therapeutic agent. However, future studies are essential to reveal the mechanism underlying the effects of MDA-231 on DPMSC functional activities and also to confirm the anti-cancer therapeutic potential of DPMSCs.
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Esfahani SA, Heidari P, Kucherlapati MH, Ferrer JM, Kucherlapati RS, Mahmood U. Optical imaging with a novel cathepsin-activatable probe for enhanced detection of colorectal cancer. AMERICAN JOURNAL OF NUCLEAR MEDICINE AND MOLECULAR IMAGING 2019; 9:230-242. [PMID: 31772821 PMCID: PMC6872479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 08/13/2019] [Indexed: 06/10/2023]
Abstract
We evaluated a cysteine cathepsin-activatable optical imaging probe (LUM015) with improved kinetics relative to larger macromolecules for detection and characterization of colorectal cancer (CRC), and thereby assessed its potential use in fluorescence-guided colonoscopy. We showed that LUM015 is stable in plasma. In-vitro studies demonstrated selectivity of LUM015 for targeting cathepsins; there was robust increase in emitted fluorescence signal from the cathepsin overexpressing HT-29 CRC cells within 1-5 minutes after incubation with LUM015 compared to the cells incubated with combination of LUM015 and a pan-protease inhibitor (as negative control). Biodistribution, differential accumulation of the probe in the tumor and tumor-to-background fluorescence signal ratio of LUM015 were compared to ProSense680, a commercially available protease-activatable optical imaging probe, over 24 hours after intravenous injection of the probes in nude mice with subcutaneously implanted HT-29 tumors. LUM015 showed distinct kinetics compared to ProSense680 with time to peak signal for subcutaneous tumor-to-colon ratio of 3.3±0.3 (mean ± SD) at 4-8 hours compared to 2.9±0.2 at 24 hours, respectively (n=8 for each group). Near-infrared fluorescence imaging and dual channel colonoscopy of the mice with orthotopic colon tumors showed tumor-to-colon ratio of 3.7±0.2 in HT-29 tumors (n=4), 2.8±0.1 in genetically engineered mice with APCKOKrasLSL-G12Dp53flox/flox mutation (n=4), and 4.1±0.1 in mice with APCLoxP/LoxPMsh2LoxP/LoxP mutation (n=4) at 6 hours after LUM015 administration. Immunohistochemistry and laser confocal microscopy of the extracted tumors confirmed high expression of cysteine cathepsins in all colon tumor types tested. Optical imaging with cathepsin-activatable LUM015 in multiple models of CRC highlights its potential for increasing the efficacy of CRC screening and therapeutic procedures.
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Affiliation(s)
- Shadi A Esfahani
- Athinoula A Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General HospitalCharlestown, MA, USA
| | - Pedram Heidari
- Athinoula A Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General HospitalCharlestown, MA, USA
| | - Melanie H Kucherlapati
- Department of Genetics, Harvard Medical SchoolBoston, MA, USA
- Department of Medicine, Division of Genetics, Brigham and Women’s HospitalBoston, MA, USA
| | | | - Raju S Kucherlapati
- Department of Genetics, Harvard Medical SchoolBoston, MA, USA
- Department of Medicine, Division of Genetics, Brigham and Women’s HospitalBoston, MA, USA
| | - Umar Mahmood
- Athinoula A Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General HospitalCharlestown, MA, USA
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Akkapeddi P, Fragoso R, Hixon JA, Ramalho AS, Oliveira ML, Carvalho T, Gloger A, Matasci M, Corzana F, Durum SK, Neri D, Bernardes GJL, Barata JT. A fully human anti-IL-7Rα antibody promotes antitumor activity against T-cell acute lymphoblastic leukemia. Leukemia 2019; 33:2155-2168. [PMID: 30850736 PMCID: PMC6733707 DOI: 10.1038/s41375-019-0434-8] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 01/17/2019] [Accepted: 02/08/2019] [Indexed: 12/28/2022]
Abstract
T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive hematological cancer for which treatment options often result in incomplete therapeutic efficacy and long-term side-effects. Interleukin 7 (IL-7) and its receptor IL-7Rα promote T-ALL development and mutational activation of IL-7Rα associates with very high risk in relapsed disease. Using combinatorial phage-display libraries and antibody reformatting, we generated a fully human IgG1 monoclonal antibody (named B12) against both wild-type and mutant human IL-7Rα, predicted to form a stable complex with IL-7Rα at a different site from IL-7. B12 impairs IL-7/IL-7R-mediated signaling, sensitizes T-ALL cells to treatment with dexamethasone and can induce cell death per se. The antibody also promotes antibody-dependent natural killer-mediated leukemia cytotoxicity in vitro and delays T-cell leukemia development in vivo, reducing tumor burden and promoting mouse survival. B12 is rapidly internalized and traffics to the lysosome, rendering it an attractive vehicle for targeted intracellular delivery of cytotoxic cargo. Consequently, we engineered a B12–MMAE antibody–drug conjugate and provide proof-of-concept evidence that it has increased leukemia cell killing abilities as compared with the naked antibody. Our studies serve as a stepping stone for the development of novel targeted therapies in T-ALL and other diseases where IL-7Rα has a pathological role.
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Affiliation(s)
- Padma Akkapeddi
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028, Lisboa, Portugal
| | - Rita Fragoso
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028, Lisboa, Portugal
| | - Julie A Hixon
- Cytokines and Immunity Section, Center for Cancer Research, National Cancer Institute, Frederick, MD, USA
| | - Ana Sofia Ramalho
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028, Lisboa, Portugal
| | - Mariana L Oliveira
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028, Lisboa, Portugal
| | - Tânia Carvalho
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028, Lisboa, Portugal
| | - Andreas Gloger
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006, Logroño, Spain
| | | | | | - Scott K Durum
- Cytokines and Immunity Section, Center for Cancer Research, National Cancer Institute, Frederick, MD, USA
| | - Dario Neri
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH Zürich), Vladimir-Prelog-Weg 4, Zürich, Switzerland
| | - Gonçalo J L Bernardes
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028, Lisboa, Portugal. .,Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK.
| | - João T Barata
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028, Lisboa, Portugal.
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13
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Kim JH, Sim JH, Lee S, Seol MA, Ye SK, Shin HM, Lee EB, Lee YJ, Choi YJ, Yoo WH, Kim JH, Kim WU, Lee DS, Kim JH, Kang I, Kang SW, Kim HR. Interleukin-7 Induces Osteoclast Formation via STAT5, Independent of Receptor Activator of NF-kappaB Ligand. Front Immunol 2017; 8:1376. [PMID: 29104576 PMCID: PMC5655015 DOI: 10.3389/fimmu.2017.01376] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 10/06/2017] [Indexed: 12/14/2022] Open
Abstract
Interleukin-7 (IL-7), which is required for the development and survival of T cells in the thymus and periphery, plays a role in joint destruction. However, it remains unclear how IL-7 affects osteoclast formation. Thus, we investigated the mechanism by which IL-7 induced osteoclast formation through IL-7 receptor α (IL-7Rα) in osteoclast precursors. We cultured peripheral blood mononuclear cells or synovial fluid mononuclear cells with IL-7 in the presence or absence of an appropriate inhibitor to analyze osteoclast formation. We also constructed IL-7Rα-expressing RAW264.7 cells to uncover the mechanism(s) by which IL-7 induced osteoclast formation differed from that of receptor activator of nuclear factor κB ligand (RANKL). We found that IL-7 induced osteoclast formation of human monocytes from peripheral blood or synovial fluid in a RANKL-independent and a signal transducer and activator of transcription 5 (STAT5)-dependent manner. IL-7-induced osteoclasts had unique characteristics, such as small, multinucleated tartrate-resistant acid phosphatase positive cells and no alterations even when RANKL was added after IL-7 pretreatment. RAW264.7 cells, if overexpressing IL-7Rα, also were able to differentiate into osteoclasts by IL-7 through a STAT5 signaling pathway. Furthermore, IL-7-induced osteoclast formation was repressed by inhibitors of the IL-7R signaling molecules Janus kinase and STAT5. Our findings demonstrate that IL-7 is a truly osteoclastogenic factor, which may induce osteoclast formation via activation of STAT5, independent of RANKL. We also suggest the possibility that an IL-7R pathway blocker could alleviate joint damage by inhibiting osteoclast formation, especially in inflammatory conditions.
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Affiliation(s)
- Jin-Hee Kim
- Department of Anatomy and Cell Biology, Seoul National University College of Medicine, Seoul, South Korea.,Department of Biomedical Laboratory Science, College of Health Science, Cheongju University, Cheongju, South Korea
| | - Ji Hyun Sim
- Department of Anatomy and Cell Biology, Seoul National University College of Medicine, Seoul, South Korea
| | - Sunkyung Lee
- Department of Anatomy and Cell Biology, Seoul National University College of Medicine, Seoul, South Korea
| | - Min A Seol
- Department of Anatomy and Cell Biology, Seoul National University College of Medicine, Seoul, South Korea.,Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea.,BK21Plus Biomedical Science Project, Seoul National University College of Medicine, Seoul, South Korea
| | - Sang-Kyu Ye
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea.,BK21Plus Biomedical Science Project, Seoul National University College of Medicine, Seoul, South Korea.,Department of Pharmacology, Seoul National University College of Medicine, Seoul, South Korea.,Medical Research Institute, Seoul National University College of Medicine, Seoul, South Korea
| | - Hyun Mu Shin
- Department of Anatomy and Cell Biology, Seoul National University College of Medicine, Seoul, South Korea.,Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea.,BK21Plus Biomedical Science Project, Seoul National University College of Medicine, Seoul, South Korea.,Medical Research Institute, Seoul National University College of Medicine, Seoul, South Korea
| | - Eun Bong Lee
- Medical Research Institute, Seoul National University College of Medicine, Seoul, South Korea.,Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea
| | - Yun Jong Lee
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea
| | - Yun Jung Choi
- Department of Internal Medicine, Chonbuk National University Medical School and Research Institute of Clinical Medicine of Chonbuk National University Hospital, Jeonju, South Korea
| | - Wan-Hee Yoo
- Department of Internal Medicine, Chonbuk National University Medical School and Research Institute of Clinical Medicine of Chonbuk National University Hospital, Jeonju, South Korea
| | - Jin Hyun Kim
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Wan-Uk Kim
- Department of Internal Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Dong-Sup Lee
- Department of Anatomy and Cell Biology, Seoul National University College of Medicine, Seoul, South Korea.,Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea.,BK21Plus Biomedical Science Project, Seoul National University College of Medicine, Seoul, South Korea.,Medical Research Institute, Seoul National University College of Medicine, Seoul, South Korea
| | - Jin-Hong Kim
- Department of Biological Sciences, College of Natural Sciences, Seoul National University, Seoul, South Korea
| | - Insoo Kang
- Department of Internal Medicine, Section of Rheumatology, Yale University School of Medicine, New Haven, CT, United States
| | - Seong Wook Kang
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Hang-Rae Kim
- Department of Anatomy and Cell Biology, Seoul National University College of Medicine, Seoul, South Korea.,Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea.,BK21Plus Biomedical Science Project, Seoul National University College of Medicine, Seoul, South Korea.,Medical Research Institute, Seoul National University College of Medicine, Seoul, South Korea
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14
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Effects of Long-Term Exercise on Age-Related Hearing Loss in Mice. J Neurosci 2017; 36:11308-11319. [PMID: 27807171 DOI: 10.1523/jneurosci.2493-16.2016] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 09/15/2016] [Indexed: 01/22/2023] Open
Abstract
Regular physical exercise reduces the risk for obesity, cardiovascular diseases, and disability and is associated with longer lifespan expectancy (Taylor et al., 2004; Pahor et al., 2014; Anton et al., 2015; Arem et al., 2015). In contrast, decreased physical function is associated with hearing loss among older adults (Li et al., 2013; Chen et al., 2015). Here, we investigated the effects of long-term voluntary wheel running (WR) on age-related hearing loss (AHL) in CBA/CaJ mice, a well established model of AHL (Zheng et al., 1999). WR activity peaked at 6 months of age (12,280 m/d) and gradually decreased over time. At 24 months of age, the average WR distance was 3987 m/d. Twenty-four-month-old runners had less cochlear hair cell and spiral ganglion neuron loss and better auditory brainstem response thresholds at the low and middle frequencies compared with age-matched, non-WR controls. Gene ontology (GO) enrichment analysis of inner ear tissues from 6-month-old controls and runners revealed that WR resulted in a marked enrichment for GO gene sets associated with immune response, inflammatory response, vascular function, and apoptosis. In agreement with these results, there was reduced stria vascularis (SV) atrophy and reduced loss of capillaries in the SV of old runners versus old controls. Given that SV holds numerous capillaries that are essential for transporting oxygen and nutrients into the cochlea, our findings suggest that long-term exercise delays the progression of AHL by reducing age-related loss of strial capillaries associated with inflammation. SIGNIFICANCE STATEMENT Nearly two-thirds of adults aged 70 years or older develop significant age-related hearing loss (AHL), a condition that can lead to social isolation and major communication difficulties. AHL is also associated with decreased physical function among older adults. In the current study, we show that regular exercise slowed AHL and cochlear degeneration significantly in a well established murine model. Our data suggest that regular exercise delays the progression of AHL by reducing age-related loss of strial capillaries associated with inflammation.
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Yamachika E, Matsui Y, Matsubara M, Matsumura T, Nakata N, Moritani N, Ikeda A, Tsujigiwa H, Ohara N, Iida S. The influence of zoledronate and teriparatide on gamma delta T cells in mice. J Dent Sci 2017; 12:333-339. [PMID: 30895072 PMCID: PMC6395360 DOI: 10.1016/j.jds.2017.03.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 02/23/2017] [Indexed: 11/06/2022] Open
Abstract
Background/purpose Few studies have investigated the possibility that bisphosphonate-related osteonecrosis of the jaw (BRONJ) might reflect an immune response; however, gamma delta T cells have been shown to significantly decline in the blood of BRONJ patients. Additionally, there have been some reports of teriparatide usage for the treatment of BRONJ. In this study, we compared the effects of zoledronate and teriparatide on lymphocyte populations and inflammatory cytokine production in mice. Materials and methods Thirty female ICR mice were divided into three groups (n = 10 each): a vehicle, a zoledronate, and a teriparatide group. Drugs were administered for 8 weeks in each group. Lymphocytes in the blood and thymus were analyzed and femurs were used for histological observation and lymphocytes analysis of bone marrow. Cytokines were measured in separated serum using Milliplex® multiplex immunoassay analysis. Results Zoledronate decreased the T cell number in the bone marrow. Additionally, serum levels of interleukin (IL)-2, IL-7, IL-12, IL-15 and RANTES, which are cytokines that affect T cell activation, differentiation and/or proliferation, were significantly lower in zoledronate treated mice. Conversely, teriparatide treatment induced an increase in gamma delta T cells in peripheral blood. Conclusion Gamma delta T cells in the bone marrow are expected to decrease with zoledronate treatment and increase with teriparatide treatment. If BRONJ involves a loss of gamma delta T cells in the circulation or bone marrow, then the increase in gamma delta T cells that is induced by teriparatide may account for its ability to resolve BRONJ.
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Affiliation(s)
- Eiki Yamachika
- Department of Oral and Maxillofacial Reconstructive Surgery, Okayama University Hospital, 2-5-1 Shikata-cho, Kitaku, Okayama 7008558, Japan
| | - Yuichi Matsui
- Department of Oral and Maxillofacial Reconstructive Surgery, Okayama University Hospital, 2-5-1 Shikata-cho, Kitaku, Okayama 7008558, Japan
| | - Masakazu Matsubara
- Department of Oral and Maxillofacial Reconstructive Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-Cho, Kitaku, Okayama 7008558, Japan
| | - Tatsushi Matsumura
- Department of Oral and Maxillofacial Reconstructive Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-Cho, Kitaku, Okayama 7008558, Japan
| | - Naoki Nakata
- Department of Oral and Maxillofacial Reconstructive Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-Cho, Kitaku, Okayama 7008558, Japan
| | - Norifumi Moritani
- Department of Oral and Maxillofacial Reconstructive Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-Cho, Kitaku, Okayama 7008558, Japan
| | - Atsushi Ikeda
- Department of Oral and Maxillofacial Reconstructive Surgery, Okayama University Hospital, 2-5-1 Shikata-cho, Kitaku, Okayama 7008558, Japan
| | - Hidetsugu Tsujigiwa
- Department of Life Science, Faculty of Science, Okayama University of Science, 1-1 Ridaicho, Kitaku, Okayama 7000005, Japan
| | - Naoya Ohara
- Department of Oral Microbiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-Cho, Kitaku, Okayama 7008558, Japan
| | - Seiji Iida
- Department of Oral and Maxillofacial Reconstructive Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-Cho, Kitaku, Okayama 7008558, Japan
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16
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Chen Y, Chauhan SK, Tan X, Dana R. Interleukin-7 and -15 maintain pathogenic memory Th17 cells in autoimmunity. J Autoimmun 2016; 77:96-103. [PMID: 27899224 DOI: 10.1016/j.jaut.2016.11.003] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 11/14/2016] [Accepted: 11/17/2016] [Indexed: 12/11/2022]
Abstract
Th17 cells are principal mediators of many autoimmune conditions. Recently, memory Th17 cells have been revealed as crucial in mediating the chronicity of various refractory autoimmune disorders; however, the underlying mechanisms maintaining memory Th17 cells have remained elusive. Here, using a preclinical model of ocular autoimmune disease we show that both IL-7 and IL-15 are critical for maintaining pathogenic memory Th17 cells. Neutralization of these cytokines leads to substantial reduction of memory Th17 cells; both IL-7 and IL-15 provide survival signals via activating STAT5, and IL-15 provides additional proliferation signals via activating both STAT5 and Akt. Topical neutralization of ocular IL-7 or IL-15 effectively reduces memory Th17 cells at the inflammatory site and draining lymphoid tissues, while topical neutralization of IL-17 alone, the major pathogenic cytokine secreted by Th17 cells, does not diminish memory Th17 cells at the draining lymphoid tissues. Our results suggest that the effective removal of pathogenic memory Th17 cells via abolishing environmental IL-7 or IL-15 is likely to be a novel strategy in the treatment of autoimmune diseases.
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Affiliation(s)
- Yihe Chen
- Schepens Eye Research Institute, Massachusetts Eye and Ear Infirmary, Department of Ophthalmology, Harvard Medical School, Boston, MA 02114, USA
| | - Sunil K Chauhan
- Schepens Eye Research Institute, Massachusetts Eye and Ear Infirmary, Department of Ophthalmology, Harvard Medical School, Boston, MA 02114, USA
| | - Xuhua Tan
- Schepens Eye Research Institute, Massachusetts Eye and Ear Infirmary, Department of Ophthalmology, Harvard Medical School, Boston, MA 02114, USA
| | - Reza Dana
- Schepens Eye Research Institute, Massachusetts Eye and Ear Infirmary, Department of Ophthalmology, Harvard Medical School, Boston, MA 02114, USA.
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17
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Screening for peptides targeted to IL-7Rα for molecular imaging of rheumatoid arthritis synovium. Arthritis Res Ther 2016; 18:230. [PMID: 27729062 PMCID: PMC5059943 DOI: 10.1186/s13075-016-1133-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 09/20/2016] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Interleukin-7 receptor alpha (IL-7Rα) represents a biomarker with potential applications in rheumatoid arthritis (RA) diagnosis and therapy. We have therefore searched by phage display potential IL-7Rα specific peptides with the primary goal being to develop in vivo molecular imaging tools. METHODS IL-7Rα-targeted peptides were searched within a disulfide-constrained combinatorial phage displayed library of random linear heptapeptides. The apparent dissociation constant (Kd) and half maximal inhibition constant (IC50) were estimated for phage clones and synthesized peptides by ELISA. We used 5-Aza-2'-deoxycytidine (ADC)-stimulated Jurkat cells and human synovial tissue from patients with RA for in vitro characterization of peptides. For molecular imaging studies performed by magnetic resonance imaging (MRI), experimental arthritis was induced in DBA/1 male mice by immunization with an emulsion of complete Freund's adjuvant and type II collagen from chicken sternal cartilage. RESULTS After several steps of phage display and peptide screening, two IL-7Rα-specific heptapeptides (P258 and P725) were selected from the initial library, based on their affinity for the target (extracellular domain of IL-7Rα, which contains a fibronectin type III repeat-like sequence). P258 (a linear peptide obtained by removing the Cys-constraint) had the lowest affinity for fibronectin itself and was therefore proposed for molecular imaging. After grafting to ultra-small superparamagnetic particles of iron oxide (USPIO), P258 produced a strong negative contrast on MRI in mice with collagen-induced arthritis (CIA), even at 2 hours post injection. The co-localization of USPIO-P258 with IL-7Rα-expressing cells in the synovial tissue from CIA mice and its ability to discriminate the level of IL-7R expression and the disease severity confirmed its efficacy as an in vivo IL-7Rα imaging agent. Interestingly, the cyclic peptide (P725), which was less adequate for molecular imaging because of higher affinity for fibronectin, had a strong ability to compete with IL-7 for the IL-7Rα binding sites, making it a potential candidate for blocking applications. Accordingly, P725 prevented the signal transducer and activator of transcription 5 (STAT5) activation induced by IL-7 in ADC-stimulated Jurkat cells. CONCLUSIONS The two peptides identified in this work demonstrate that IL-7Rα targeting in RA presents potential applications for in vivo molecular imaging and putative blocking purposes.
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Abstract
Osteoporosis develops when the rate of osteoclastic bone breakdown (resorption) exceeds that of osteoblastic bone formation, which leads to loss of BMD and deterioration of bone structure and strength. Osteoporosis increases the risk of fragility fractures, a cause of substantial morbidity and mortality, especially in elderly patients. This imbalance between bone formation and bone resorption is brought about by natural ageing processes, but is frequently exacerbated by a number of pathological conditions. Of importance to the aetiology of osteoporosis are findings over the past two decades attesting to a deep integration of the skeletal system with the immune system (the immuno-skeletal interface (ISI)). Although protective of the skeleton under physiological conditions, the ISI might contribute to bone destruction in a growing number of pathophysiological states. Although numerous research groups have investigated how the immune system affects basal and pathological osteoclastic bone resorption, recent findings suggest that the reach of the adaptive immune response extends to the regulation of osteoblastic bone formation. This Review examines the evolution of the field of osteoimmunology and how advances in our understanding of the ISI might lead to novel approaches to prevent and treat bone loss, and avert fractures.
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Affiliation(s)
- M Neale Weitzmann
- The Atlanta Department of Veterans Affairs Medical Center, 1670 Clairmont Road, Decatur, Georgia, 30033, USA
- Department of Medicine, Division of Endocrinology and Metabolism and Lipids, Emory University School of Medicine, 101 Woodruff Circle, 1305 WMB, Atlanta, Georgia 30322, USA
| | - Ighovwerha Ofotokun
- Department of Medicine, Division of Infectious Diseases, Emory University School of Medicine, 49 Jesse Hill Jr Drive, Atlanta, Georgia 30303, USA
- Grady Healthcare System, 80 Jesse Hill Jr Drive SE, Atlanta, Georgia, 30303, USA
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19
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von Wnuck Lipinski K, Sattler K, Peters S, Weske S, Keul P, Klump H, Heusch G, Göthert JR, Levkau B. Hepatocyte Nuclear Factor 1A Is a Cell-Intrinsic Transcription Factor Required for B Cell Differentiation and Development in Mice. THE JOURNAL OF IMMUNOLOGY 2016; 196:1655-65. [PMID: 26800876 DOI: 10.4049/jimmunol.1500897] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 12/07/2015] [Indexed: 12/22/2022]
Abstract
The hepatocyte NF (HNF) family of transcription factors regulates the complex gene networks involved in lipid, carbohydrate, and protein metabolism. In humans, HNF1A mutations cause maturity onset of diabetes in the young type 3, whereas murine HNF6 participates in fetal liver B lymphopoiesis. In this study, we have identified a crucial role for the prototypical member of the family HNF1A in adult bone marrow B lymphopoiesis. HNF1A(-/-) mice exhibited a clear reduction in total blood and splenic B cells and a further pronounced one in transitional B cells. In HNF1A(-/-) bone marrow, all B cell progenitors-from pre-pro-/early pro-B cells to immature B cells-were dramatically reduced and their proliferation rate suppressed. IL-7 administration in vivo failed to boost B cell development in HNF1A(-/-) mice, whereas IL-7 stimulation of HNF1A(-/-) B cell progenitors in vitro revealed a marked impairment in STAT5 phosphorylation. The B cell differentiation potential of HNF1A(-/-) common lymphoid progenitors was severely impaired in vitro, and the expression of the B lymphopoiesis-promoting transcription factors E2A, EBF1, Pax5, and Bach2 was reduced in B cell progenitors in vivo. HNF1A(-/-) bone marrow chimera featured a dramatic defect in B lymphopoiesis recapitulating that of global HNF1A deficiency. The HNF1A(-/-) lymphopoiesis defect was confined to B cells as T lymphopoiesis was unaffected, and bone marrow common lymphoid progenitors and hematopoietic stem cells were even increased. Our data demonstrate that HNF1A is an important cell-intrinsic transcription factor in adult B lymphopoiesis and suggest the IL-7R/STAT5 module to be causally involved in mediating its function.
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Affiliation(s)
- Karin von Wnuck Lipinski
- Institute for Pathophysiology, West German Heart and Vascular Center, University Hospital Essen, 45122 Essen, Germany
| | - Katherine Sattler
- Institute for Pathophysiology, West German Heart and Vascular Center, University Hospital Essen, 45122 Essen, Germany
| | - Susann Peters
- Institute for Pathophysiology, West German Heart and Vascular Center, University Hospital Essen, 45122 Essen, Germany
| | - Sarah Weske
- Institute for Pathophysiology, West German Heart and Vascular Center, University Hospital Essen, 45122 Essen, Germany
| | - Petra Keul
- Institute for Pathophysiology, West German Heart and Vascular Center, University Hospital Essen, 45122 Essen, Germany
| | - Hannes Klump
- Institute for Transfusion Medicine, University Hospital Essen, University of Duisburg-Essen, 45122 Essen, Germany; and
| | - Gerd Heusch
- Institute for Pathophysiology, West German Heart and Vascular Center, University Hospital Essen, 45122 Essen, Germany
| | - Joachim R Göthert
- Department of Hematology, University Hospital Essen, University of Duisburg-Essen, 45122 Essen, Germany
| | - Bodo Levkau
- Institute for Pathophysiology, West German Heart and Vascular Center, University Hospital Essen, 45122 Essen, Germany;
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Wang S, Hottz P, Schechter M, Rong L. Modeling the Slow CD4+ T Cell Decline in HIV-Infected Individuals. PLoS Comput Biol 2015; 11:e1004665. [PMID: 26709961 PMCID: PMC4692447 DOI: 10.1371/journal.pcbi.1004665] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Accepted: 11/17/2015] [Indexed: 02/07/2023] Open
Abstract
The progressive loss of CD4+ T cell population is the hallmark of HIV-1 infection but the mechanism underlying the slow T cell decline remains unclear. Some recent studies suggested that pyroptosis, a form of programmed cell death triggered during abortive HIV infection, is associated with the release of inflammatory cytokines, which can attract more CD4+ T cells to be infected. In this paper, we developed mathematical models to study whether this mechanism can explain the time scale of CD4+ T cell decline during HIV infection. Simulations of the models showed that cytokine induced T cell movement can explain the very slow decline of CD4+ T cells within untreated patients. The long-term CD4+ T cell dynamics predicted by the models were shown to be consistent with available data from patients in Rio de Janeiro, Brazil. Highly active antiretroviral therapy has the potential to restore the CD4+ T cell population but CD4+ response depends on the effectiveness of the therapy, when the therapy is initiated, and whether there are drug sanctuary sites. The model also showed that chronic inflammation induced by pyroptosis may facilitate persistence of the HIV latent reservoir by promoting homeostatic proliferation of memory CD4+ cells. These results improve our understanding of the long-term T cell dynamics in HIV-1 infection, and support that new treatment strategies, such as the use of caspase-1 inhibitors that inhibit pyroptosis, may maintain the CD4+ T cell population and reduce the latent reservoir size. The CD4+ T cell population within HIV-infected individuals declines slowly as disease progresses. When CD4+ cells drop to below 200 cells/ul, the infection is usually considered to enter the late stage, i.e., acquired immune deficiency syndrome (AIDS). CD4+ T cell depletion can take many years but the biological events underlying such slow decline are not well understood. Some studies showed that the majority of infected T cells in lymph nodes die by pyroptosis, a form of programmed cell death, which can release inflammatory signals attracting more CD4+ T cells to be infected. We developed mathematical models to describe this process and explored whether they can generate the long-term CD4+ T cell decline. We showed that pyroptosis induced cell movement can explain the slow time scale of CD4+ T cell depletion and that pyroptosis may also contribute to the persistence of latently infected cells, which represent a major obstacle to HIV eradication. The modeling prediction agrees with patient data in Rio de Janeiro, Brazil. These results suggest that a combination of current treatment regimens and caspase-1 inhibitor that can inhibit pyroptosis might provide a new way to maintain the CD4+ T cell population and eradicate the HIV latent reservoir.
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Affiliation(s)
- Sunpeng Wang
- Department of Biology, New York University, New York, New York, United States of America
| | - Patricia Hottz
- Departamento de Medicina Preventiva, Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Mauro Schechter
- Departamento de Medicina Preventiva, Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Projeto Praça Onze, Hospital Escola São Francisco de Assis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Libin Rong
- Department of Mathematics and Statistics, and Center for Biomedical Research, Oakland University, Rochester, Michigan, United States of America
- * E-mail:
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Lee M, Song SJ, Choi MS, Yu R, Park T. IL-7 receptor deletion ameliorates diet-induced obesity and insulin resistance in mice. Diabetologia 2015; 58:2361-70. [PMID: 26152662 DOI: 10.1007/s00125-015-3684-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Accepted: 06/17/2015] [Indexed: 01/07/2023]
Abstract
AIM/HYPOTHESIS Obesity-induced inflammation plays an important role in the development of insulin resistance and type 2 diabetes. Recent studies have demonstrated that adiposity can be improved by ablating certain inflammatory signalling pathways. Although the IL-7 receptor (IL-7R) is mostly known as a key regulator of T lymphocyte development and homeostasis, its role in obesity and metabolic diseases is unknown. Because IL-7 is markedly increased in the serum of obese individuals and IL-7R (also known as IL7R) is overexpressed in white adipose tissue (WAT) in obesity, we studied the metabolic consequences of genetic Il-7r ablation in mice. METHODS Age-matched Il-7r-deficient (Il-7r KO) and wild-type (WT) littermates were fed a standard chow or high-fat diet (HFD) for 14 weeks. Their serum metabolic variables were measured. The expression of genes and proteins related to insulin resistance and inflammation was evaluated in WAT. RESULTS We demonstrated that Il-7r KO mice exhibited significantly reduced body weight gain and visceral adiposity compared with WT controls on both chow and HFD. The expression of signalling molecules involved in adipogenesis was reduced in the WAT of Il-7r KO mice. We also found that Il-7r KO mice had significantly enhanced glucose homeostasis and insulin sensitivity. Consistent with an improved metabolic phenotype, proinflammatory cytokine production and macrophage infiltration was attenuated in the WAT of Il-7r KO mice. CONCLUSIONS/INTERPRETATION The IL-7R plays an important role in the induction of HFD-induced adipogenesis and insulin resistance in mice.
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Affiliation(s)
- Miyoung Lee
- Department of Food and Nutrition, Brain Korea 21 Plus Project, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-749, Republic of Korea
| | - Su Jin Song
- Department of Food and Nutrition, Brain Korea 21 Plus Project, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-749, Republic of Korea
| | - Myung-Sook Choi
- Department of Food Science and Nutrition, Kyungpook National University, Daegu, Republic of Korea
| | - Rina Yu
- Department of Food Science and Nutrition, University of Ulsan, Mugeo-dong, Nam-ku, Ulsan, Republic of Korea
| | - Taesun Park
- Department of Food and Nutrition, Brain Korea 21 Plus Project, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-749, Republic of Korea.
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El Azreq MA, Arseneault C, Boisvert M, Pagé N, Allaeys I, Poubelle PE, Tessier PA, Aoudjit F. Cooperation between IL-7 Receptor and Integrin α2β1 (CD49b) Drives Th17-Mediated Bone Loss. THE JOURNAL OF IMMUNOLOGY 2015; 195:4198-209. [DOI: 10.4049/jimmunol.1500437] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 08/20/2015] [Indexed: 01/15/2023]
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Plasma Interleukin-37 Is Elevated in Patients with Rheumatoid Arthritis: Its Correlation with Disease Activity and Th1/Th2/Th17-Related Cytokines. DISEASE MARKERS 2015; 2015:795043. [PMID: 26435567 PMCID: PMC4578832 DOI: 10.1155/2015/795043] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2015] [Revised: 08/09/2015] [Accepted: 08/11/2015] [Indexed: 01/18/2023]
Abstract
Interleukin- (IL-) 37 is a novel anti-inflammatory cytokine that suppresses immune response and inflammation. This study was performed to determine whether IL-37 was elevated in patients with rheumatoid arthritis (RA) and investigate the correlation between IL-37 level and disease activity and the concentration of Th1/Th2/Th17-related cytokines. Clinical parameters of disease activity, including the 28-joint disease activity score (DAS28) and C-reactive protein (CRP), were collected in 34 RA patients and 34 age- and sex-matched healthy controls. Plasma IL-37 was measured by ELISA. Plasma levels of TNF-α, IL-1β, IL-2, IL-4, IL-5, IL-6, IL-7, IL-8, IL-10, IL-12, IL-13, IL-17, G-CSF, GM-CSF, IFN-γ, MCP-1, and MIP-1β were analyzed using the Bio-Plex suspension array system. It was found that IL-37 levels were elevated markedly in RA patients and almost undetectable in healthy controls. In addition, IL-37 levels in patients with active RA were significantly enhanced as compared with those in patients of remission. More importantly, IL-37 showed a significant correlation with disease activity (DAS28) and IL-4, IL-7, IL-10, IL-12, and IL-13 concentrations in RA patients. These findings suggest that IL-37 plays an important role in the pathogenesis of RA and may prove to be a potential biomarker of active RA.
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Hillen MR, Hartgring SAY, Willis CR, Radstake TRDJ, Hack CE, Lafeber FPJG, van Roon JAG. The Additive Inflammatory In Vivo and In Vitro Effects of IL-7 and TSLP in Arthritis Underscore the Therapeutic Rationale for Dual Blockade. PLoS One 2015; 10:e0130830. [PMID: 26110994 PMCID: PMC4482403 DOI: 10.1371/journal.pone.0130830] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Accepted: 05/26/2015] [Indexed: 01/16/2023] Open
Abstract
INTRODUCTION The cytokines interleukin (IL)-7 and thymic stromal lymphopoietin (TSLP) signal through the IL-7R subunit and play proinflammatory roles in experimental arthritis and rheumatoid arthritis (RA). We evaluated the effect of inhibition of IL-7R- and TSLPR-signalling as well as simultaneous inhibition of IL-7R- and TSLPR-signalling in murine experimental arthritis. In addition, the effects of IL-7 and TSLP in human RA dendritic cell (DC)/T-cell co-cultures were studied. METHODS Arthritis was induced with proteoglycan in wildtype mice (WT) and in mice deficient for the TSLP receptor subunit (TSLPR-/-). Both mice genotypes were treated with anti-IL-7R or phosphate buffered saline. Arthritis severity was assessed and local and circulating cytokines were measured. Autologous CD1c-positive DCs and CD4 T-cells were isolated from peripheral blood of RA patients and were co-cultured in the presence of IL-7, TSLP or both and proliferation and cytokine production were assessed. RESULTS Arthritis severity and immunopathology were decreased in WT mice treated with anti-IL-7R, in TSLPR-/- mice, and the most robustly in TSLPR-/- mice treated with anti-IL-7R. This was associated with strongly decreased levels of IL-17, IL-6 and CD40L. In human DC/T-cell co-cultures, TSLP and IL-7 additively increased T-cell proliferation and production of Th17-associated cytokines, chemokines and tissue destruction factors. CONCLUSION TSLP and IL-7 have an additive effect on the production of Th17-cytokines in a human in vitro model, and enhance arthritis in mice linked with enhanced inflammation and immunopathology. As both cytokines signal via the IL-7R, these data urge for IL-7R-targeting to prevent the activity of both cytokines in RA.
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Affiliation(s)
- Maarten R. Hillen
- Department of Rheumatology & Clinical Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
- Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Sarita A. Y. Hartgring
- Department of Rheumatology & Clinical Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
- Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Cynthia R. Willis
- Inflammation Lab, Amgen Inc., Seattle, Washington, United States of America
| | - Timothy R. D. J. Radstake
- Department of Rheumatology & Clinical Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
- Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Cornelis E. Hack
- Department of Rheumatology & Clinical Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
- Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Floris P. J. G. Lafeber
- Department of Rheumatology & Clinical Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Joel A. G van Roon
- Department of Rheumatology & Clinical Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
- Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
- * E-mail:
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Zhang Y, Guo M, Xin N, Shao Z, Zhang X, Zhang Y, Chen J, Zheng S, Fu L, Wang Y, Zhou D, Chen H, Huang Y, Dong R, Xiao C, Liu Y, Geng D. Decreased microRNA miR-181c expression in peripheral blood mononuclear cells correlates with elevated serum levels of IL-7 and IL-17 in patients with myasthenia gravis. Clin Exp Med 2015; 16:413-21. [PMID: 25962782 DOI: 10.1007/s10238-015-0358-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 05/05/2015] [Indexed: 11/30/2022]
Abstract
miR-181c is a newly identified negative regulator of immune cell activation. In this study, we aimed to investigate the expression and functional role of miR-181c in myasthenia gravis (MG). miR-181c showed significant downregulation in peripheral blood mononuclear cells (PBMCs) from MG patients compared with healthy controls, with lower expression in generalized patients than in ocular ones. MG patients also had increased serum IL-7 and IL-17 levels. Additionally, serum IL-7 level presents a positive correlation with the serum IL-17 level. miR-181c levels were negatively correlated with serum levels of IL-7 and IL-17 in either generalized patients or ocular patients. A luciferase reporter assay revealed that miR-181c could directly bind to the 3'-UTR of interleukin-7. Forced expression of miR-181c led to decreased IL-7 and IL-17 release in cultured PBMCs, while depletion of miR-181c increased the secretion of these two proinflammatory cytokines. The results from our study suggested for the first time that miR-181c was able to negatively regulate the production of proinflammatory cytokines IL-7 and IL-17 in MG patients, and it is a novel potential therapeutic target for MG.
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Affiliation(s)
- Yong Zhang
- Department of Neurology, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China.
| | - Mingfeng Guo
- Department of Emergency Medicine, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu, China
| | - Ning Xin
- Department of Neurology, The Second Affiliated Hospital of Soochow University, Soochow University, Suzhou, Jiangsu, China
| | - Zhen Shao
- Department of Neurology, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - Xiuying Zhang
- Department of Neurology, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - Yanyan Zhang
- Department of Neurology, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - Jing Chen
- Department of Neurology, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - Shuangshuang Zheng
- Department of Neurology, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - Linlin Fu
- Department of Pathogenic Biology and Lab of Infection and Immunology, Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - YuZhong Wang
- Department of Neurology, Affiliated Hospital of Jining Medical University, Jining, Shandong, China
| | - Dongmei Zhou
- Department of Pathogenic Biology and Lab of Infection and Immunology, Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - Hao Chen
- Department of Neurology, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - Yan Huang
- Department of Neurology, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - Ruiguo Dong
- Department of Neurology, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China.
| | - Chenghua Xiao
- Department of Neurology, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - Yonghai Liu
- Department of Neurology, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - Deqin Geng
- Department of Neurology, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
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Abstract
PURPOSE OF REVIEW Bone disease is a leading cause of fractures and continues to be a source of significant morbidity and mortality worldwide. As the underlying mechanisms of osteoporosis are elucidated, immune dysfunction continues to emerge as a key precipitating factor in multiple bone disease contexts. This review examines recent findings in the osteoimmunology field and their implications for bone disease and for novel future therapeutic approaches to rejuvenate the skeleton. RECENT FINDINGS T-cells and B-cells have long been recognized to play important roles in the etiology of inflammatory bone disease; however, new findings continue to challenge our understanding of the depth of the immuno-skeletal interface. In this review, we examine recent evidence for new roles of B-cells in oestrogen deficiency bone loss; central actions of interleukin-7 in the cause of T-cell mediated tissue destruction in rheumatoid arthritis; novel RANKL-independent alveolar bone loss in periodontal infection; and a putative role for γδ T-cells in bisphosphonate-associated osteonecrosis of the jaw. Finally, evidence for novel bone anabolic activities mediated through T-cells by the CD28 antagonist CTLA-4Ig and by intermittently administered parathyroid hormone are examined. SUMMARY As the field of osteoimmunology continues to mature, new interrelationships between immune cells and bone turnover continue to emerge.
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Affiliation(s)
- M. Neale Weitzmann
- Atlanta Department of Veterans Affairs Medical Center, Decatur, Emory University School of Medicine, Atlanta, Georgia, USA
- Department of Medicine, Division of Endocrinology and Metabolism and Lipids, Emory University School of Medicine, Atlanta, Georgia, USA
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Li HY, Zhang DL, Zhang X, Liu XF, Xue F, Yang RC. Interleukin-7 is decreased and maybe plays a pro-inflammatory function in primary immune thrombocytopenia. Platelets 2014; 26:243-9. [PMID: 24750122 DOI: 10.3109/09537104.2014.903392] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Primary immune thrombocytopenia (ITP) is an autoimmune disease with many immune dysfunctions, including over-proliferation and apoptosis resistance of auto-reactive lymphocytes. This study aimed to determine the effects of interleukin (IL)-7 on the cytokine production and survival of peripheral blood mononuclear cells and bone marrow mononuclear cells from ITP patients. We found that the plasma IL-7 levels in peripheral blood from ITP patients were lower than that of the normal controls, and it had positive correlation with platelet counts. However, the levels of IL-7 did not change in bone marrow serum of ITP patients compared with that of normal controls. The result of further stimulation experiments in vitro showed that IL-7 up-regulated the apoptosis of autologous platelets, promoted the proliferation and secretion of interferon-γ, tumor necrosis factor-α as well as IL-10 of lymphocyte both from peripheral blood and bone marrow. As the role of IL-7 in apoptosis-resistance and stimulation of pro-inflammatory cytokines, we speculated that decreased IL-7 in peripheral blood, maybe, is a consequence of the negative feedback of the pro-inflammatory function in ITP patients.
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Affiliation(s)
- Hui-Yuan Li
- State Key Laboratory of Experimental Hematology, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , People's Republic of China
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Identification of multiple risk variants for ankylosing spondylitis through high-density genotyping of immune-related loci. Nat Genet 2013; 45:730-8. [PMID: 23749187 DOI: 10.1038/ng.2667] [Citation(s) in RCA: 610] [Impact Index Per Article: 55.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Accepted: 05/15/2013] [Indexed: 02/07/2023]
Abstract
Ankylosing spondylitis is a common, highly heritable inflammatory arthritis affecting primarily the spine and pelvis. In addition to HLA-B*27 alleles, 12 loci have previously been identified that are associated with ankylosing spondylitis in populations of European ancestry, and 2 associated loci have been identified in Asians. In this study, we used the Illumina Immunochip microarray to perform a case-control association study involving 10,619 individuals with ankylosing spondylitis (cases) and 15,145 controls. We identified 13 new risk loci and 12 additional ankylosing spondylitis-associated haplotypes at 11 loci. Two ankylosing spondylitis-associated regions have now been identified encoding four aminopeptidases that are involved in peptide processing before major histocompatibility complex (MHC) class I presentation. Protective variants at two of these loci are associated both with reduced aminopeptidase function and with MHC class I cell surface expression.
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Pongratz G, Anthofer JM, Melzer M, Anders S, Grässel S, Straub RH. IL-7 receptor α expressing B cells act proinflammatory in collagen-induced arthritis and are inhibited by sympathetic neurotransmitters. Ann Rheum Dis 2013; 73:306-12. [PMID: 23505234 DOI: 10.1136/annrheumdis-2012-202944] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVES The sympathetic nervous system (SNS) as well as the interleukin (IL)-7/IL-7 receptor (IL-7R) system play a role in the pathogenesis of arthritis. However, the target cells and mechanisms involved are not fully resolved. The goal of this study was to determine if B cells are influenced by IL-7 and to investigate the possible interplay between the SNS and the IL-7/IL-7R system on B cells in arthritis. METHODS Collagen type II-induced arthritis (CIA) in DBA1 mice. ELISA to determine specific anti-CII antibodies. Fluorescence activated cell sorting (FACS) analysis to determine IL-7R+ cells and intracellular phosphorylated signal transducer and activator of transcription 5 (pSTAT5). Immunohistochemistry to show IL-7R+ B cells in rheumatoid arthritis (RA) and osteoarthritis (OA) synovial tissue. RESULTS IL-7 stimulated IL-7R+ mature B cells act proinflammatory (increased clinical score, increased anticollagen type II antibodies) after cell transfer in CIA. The sympathetic neurotransmitter norepinephrine abrogates this effect. Expression of IL-7Rα is increased when B cells are activated (anti-CD40 or lipopolysaccharide) in vitro and stimulating the IL-7R induces intracellular accumulation of pSTAT5. α- And β-adrenergic agonists show no influence on expression levels of IL-7R on activated B cells; however, intracellular IL-7R downstream signalling is abrogated via the β2-adreonceptor (β2AR) agonist terbutaline. IL-7R and β2AR are also expressed on B cells in synovial tissue from RA and OA patients. CONCLUSIONS These data indicate that IL7R+ B cells have a proinflammatory role in arthritis which can be inhibited by the sympathetic neurotransmitter norepinephrine via inhibition of IL-7R signalling.
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Affiliation(s)
- Georg Pongratz
- Laboratory of Experimental Rheumatology and Neuroendocrine Immunology, Department of Internal Medicine I, University Hospital Regensburg, , Regensburg, Germany
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