1
|
Cheng W, Tang X, Feng S, Zhang Z, Liu W. Influence of immunodeficiency on spring-assisted cranioplasty: A study in mice. Curr Probl Surg 2024; 61:101508. [PMID: 39098332 DOI: 10.1016/j.cpsurg.2024.101508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 04/16/2024] [Accepted: 04/18/2024] [Indexed: 08/06/2024]
Affiliation(s)
- Wenjie Cheng
- Department of Craniomaxillofacial Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China 100043
| | - Xiaojun Tang
- Department of Craniomaxillofacial Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China 100043
| | - Shi Feng
- Department of Craniomaxillofacial Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China 100043
| | - Zhiyong Zhang
- Department of Craniomaxillofacial Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China 100043
| | - Wei Liu
- Department of Craniomaxillofacial Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China 100043.
| |
Collapse
|
2
|
Liu S, Yu X, Guo Q, Zhao S, Yan K, Hou M, Bai F, Li S. Periodontal ligament-associated protein-1 promotes osteoclastogenesis in mice by modulating TGF-β1/Smad1 pathway. J Periodontol 2024; 95:146-158. [PMID: 37436700 DOI: 10.1002/jper.23-0112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 06/25/2023] [Accepted: 07/04/2023] [Indexed: 07/13/2023]
Abstract
BACKGROUND Periodontal ligament-associated protein-1 (PLAP-1), an important target molecule of osteoarthritis research, may affect alveolar bone resorption. The aim of our study was to comprehensively and systematically detect the effect of PLAP-1 on alveolar bone resorption and the underlying mechanism in PLAP-1 knockout mouse models. METHODS We used a PLAP-1 knockout (C57BL/6N-Plap-1-/- ) mouse model to investigate the effect of PLAP-1 on osteoclast differentiation and the underlying mechanism by adding Porphyromonas gingivalis lipopolysaccharide to stimulate bone marrow-derived macrophages. The effect of PLAP-1 on alveolar bone resorption and the underlying mechanism were studied using a ligature periodontitis model, with microcomputed tomography imaging, immunochemistry, and immunofluorescence. RESULTS The in vitro analysis results demonstrated that PLAP-1 knockout significantly inhibited osteoclast differentiation under both normal and inflammatory conditions. Bioinformatic analysis, immunofluorescence, and co-immunoprecipitation showed colocalization and interaction between PLAP-1 and transforming growth factor beta 1 (TGF-β1). The phosphorylation of Smad1 was reduced in the PLAP-1 knockout cells compared with that in the cells from wild-type mice. The in vivo analysis results demonstrated that PLAP-1 knockout decreased bone resorption and the levels of osteoclast differentiation markers in experimental periodontitis compared with those in wild-type mice. Immunofluorescence staining confirmed colocalization of PLAP-1 and TGF-β1 in the experimental periodontitis model. The phosphorylation level of Smad1 was significantly reduced in PLAP-1 knockout mice compared with that in wild-type mice. CONCLUSIONS This study revealed that the knockout of PLAP-1 inhibits osteoclast differentiation and decreases alveolar bone resorption through the TGF-β1/Smad1 signaling pathway, which could serve as an innovative target for the prevention and treatment of periodontitis.
Collapse
Affiliation(s)
- Shuang Liu
- Department of Periodontology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan, Shandong, China
| | - Xijiao Yu
- Department of Endodontics, Central Laboratory, Jinan Stomatological Hospital, Jinan Key Laboratory of Oral Tissue Regeneration, Shandong Provincial Health Commission Key Laboratory of Oral Diseases and Tissue Regeneration, Jinan, Shandong, China
| | - Qiushuang Guo
- Department of Periodontology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan, Shandong, China
| | - Shuaiqi Zhao
- Department of Periodontology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan, Shandong, China
| | - Kaixian Yan
- Institute of Medical Technology, Peking University Health Science Center, Beijing, China
| | - Meng Hou
- Department of Periodontology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan, Shandong, China
| | - Fuxiang Bai
- Department of Periodontology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan, Shandong, China
| | - Shu Li
- Department of Periodontology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan, Shandong, China
| |
Collapse
|
3
|
Araida J, Ohka S, Soeda M, Nishizawa D, Hasegawa J, Nakayama K, Ebata Y, Ogai Y, Fukuda KI, Ikeda K. rs12411980 single-nucleotide polymorphism related to PRTFDC1 expression is significantly associated with phantom tooth pain. Mol Pain 2024; 20:17448069241272215. [PMID: 39093623 PMCID: PMC11348367 DOI: 10.1177/17448069241272215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 06/21/2024] [Accepted: 06/26/2024] [Indexed: 08/04/2024] Open
Abstract
Phantom tooth pain (PTP) is one type of non-odontogenic neuropathic toothache, which rarely occurs after appropriate pulpectomy or tooth extraction. The cause of PTP is unknown. We investigated pain-related genetic factors that are associated with PTP. Four pain-associated genes, including G protein-coupled receptor 158 (GPR158) and phosphoribosyl transferase domain containing 1 (PRTFDC1), are adjacent to each other on the human genome. Some of these four genes or their genomic region may be related to PTP. We statistically analyzed associations between single-nucleotide polymorphisms (SNPs) in the genomic region and PTP in patients with PTP (PTP group), other orofacial pain (OFP group), and healthy control subjects. We then performed a database search of expression quantitative trait loci (eQTLs). For the seven SNPs that were significantly associated with PTP even after Bonferroni correction, we focused on the rs12411980 tag SNP (p = 9.42 × 10-4). Statistical analyses of the PTP group and healthy subject groups (group labels: NOC and TD) revealed that the rate of the GG genotype of the rs12411980 SNP was significantly higher in the PTP group than in the healthy subject groups (PTP group vs. NOC group: p = 2.92 × 10-4, PTP group vs. TD group: p = 5.46 × 10-4; percentage of GG: 30% in PTP group, 12% in NOC group, 11% in TD group). These results suggest that the GG genotype of the rs12411980 SNP is more susceptible to PTP. The rs2765697 SNP that is in strong linkage disequilibrium with the rs12411980 SNP is an eQTL that is associated with higher PRTFDC1 expression in the minor allele homozygotes in the healthy subject groups of the rs2765697 SNP. Thus, PRTFDC1 expression similarly increases in the minor allele homozygotes (GG genotype) in the healthy subject groups of the rs12411980 SNP, which would lead to greater susceptibility to PTP.
Collapse
Affiliation(s)
- Jun Araida
- Addictive Substance Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
- Department of Oral Health and Clinical Science, Tokyo Dental College, Tokyo, Japan
| | - Seii Ohka
- Addictive Substance Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Moe Soeda
- Department of Oral Health and Clinical Science, Tokyo Dental College, Tokyo, Japan
| | - Daisuke Nishizawa
- Addictive Substance Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Junko Hasegawa
- Addictive Substance Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Kyoko Nakayama
- Addictive Substance Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Yuko Ebata
- Addictive Substance Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Yasukazu Ogai
- Social Psychiatry and Mental Health, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Ken-ichi Fukuda
- Department of Oral Health and Clinical Science, Tokyo Dental College, Tokyo, Japan
| | - Kazutaka Ikeda
- Addictive Substance Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
- Department of Neuropsychopharmacology, National Institute of Mental Health, National Center of Neurology and Psychiatry, Kodaira, Japan
| |
Collapse
|
4
|
Mauvais-Jarvis F. Sex differences in energy metabolism: natural selection, mechanisms and consequences. Nat Rev Nephrol 2024; 20:56-69. [PMID: 37923858 DOI: 10.1038/s41581-023-00781-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/03/2023] [Indexed: 11/06/2023]
Abstract
Metabolic homeostasis operates differently in men and women. This sex asymmetry is the result of evolutionary adaptations that enable women to resist loss of energy stores and protein mass while remaining fertile in times of energy deficit. During starvation or prolonged exercise, women rely on oxidation of lipids, which are a more efficient energy source than carbohydrates, to preserve glucose for neuronal and placental function and spare proteins necessary for organ function. Carbohydrate reliance in men could be an evolutionary adaptation related to defence and hunting, as glucose, unlike lipids, can be used as a fuel for anaerobic high-exertion muscle activity. The larger subcutaneous adipose tissue depots in healthy women than in healthy men provide a mechanism for lipid storage. As female mitochondria have higher functional capacity and greater resistance to oxidative damage than male mitochondria, uniparental inheritance of female mitochondria may reduce the transmission of metabolic disorders. However, in women, starvation resistance and propensity to obesity have evolved in tandem, and the current prevalence of obesity is greater in women than in men. The combination of genetic sex, programming by developmental testosterone in males, and pubertal sex hormones defines sex-specific biological systems in adults that produce phenotypic sex differences in energy homeostasis, metabolic disease and drug responses.
Collapse
Affiliation(s)
- Franck Mauvais-Jarvis
- Section of Endocrinology and Metabolism, John W. Deming Department of Medicine, Tulane University School of Medicine and Tulane Center of Excellence in Sex-Based Biology & Medicine, New Orleans, LA, USA.
- Endocrine service, Southeast Louisiana Veterans Health Care System, New Orleans, LA, USA.
| |
Collapse
|
5
|
Rouskas K, Katsareli EA, Amerikanou C, Dimopoulos AC, Glentis S, Kalantzi A, Skoulakis A, Panousis N, Ongen H, Bielser D, Planchon A, Romano L, Harokopos V, Reczko M, Moulos P, Griniatsos I, Diamantis T, Dermitzakis ET, Ragoussis J, Dedoussis G, Dimas AS. Identifying novel regulatory effects for clinically relevant genes through the study of the Greek population. BMC Genomics 2023; 24:442. [PMID: 37543566 PMCID: PMC10403965 DOI: 10.1186/s12864-023-09532-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 07/25/2023] [Indexed: 08/07/2023] Open
Abstract
BACKGROUND Expression quantitative trait loci (eQTL) studies provide insights into regulatory mechanisms underlying disease risk. Expanding studies of gene regulation to underexplored populations and to medically relevant tissues offers potential to reveal yet unknown regulatory variants and to better understand disease mechanisms. Here, we performed eQTL mapping in subcutaneous (S) and visceral (V) adipose tissue from 106 Greek individuals (Greek Metabolic study, GM) and compared our findings to those from the Genotype-Tissue Expression (GTEx) resource. RESULTS We identified 1,930 and 1,515 eGenes in S and V respectively, over 13% of which are not observed in GTEx adipose tissue, and that do not arise due to different ancestry. We report additional context-specific regulatory effects in genes of clinical interest (e.g. oncogene ST7) and in genes regulating responses to environmental stimuli (e.g. MIR21, SNX33). We suggest that a fraction of the reported differences across populations is due to environmental effects on gene expression, driving context-specific eQTLs, and suggest that environmental effects can determine the penetrance of disease variants thus shaping disease risk. We report that over half of GM eQTLs colocalize with GWAS SNPs and of these colocalizations 41% are not detected in GTEx. We also highlight the clinical relevance of S adipose tissue by revealing that inflammatory processes are upregulated in individuals with obesity, not only in V, but also in S tissue. CONCLUSIONS By focusing on an understudied population, our results provide further candidate genes for investigation regarding their role in adipose tissue biology and their contribution to disease risk and pathogenesis.
Collapse
Affiliation(s)
- Konstantinos Rouskas
- Institute for Bioinnovation, Biomedical Sciences Research Center 'Alexander Fleming', Vari, Greece
- Institute of Applied Biosciences, Centre for Research & Technology Hellas, Thessaloniki, Greece
| | - Efthymia A Katsareli
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, Athens, Greece
| | - Charalampia Amerikanou
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, Athens, Greece
| | - Alexandros C Dimopoulos
- Institute for Fundamental Biomedical Science, Biomedical Sciences Research Center 'Alexander Fleming', Vari, Greece
- Hellenic Naval Academy, Hatzikyriakou Avenue, Pireaus, Greece
| | - Stavros Glentis
- Institute for Bioinnovation, Biomedical Sciences Research Center 'Alexander Fleming', Vari, Greece
- Pediatric Hematology/Oncology Unit (POHemU), First Department of Pediatrics, University of Athens, Aghia Sophia Children's Hospital, Athens, Greece
| | - Alexandra Kalantzi
- Institute for Bioinnovation, Biomedical Sciences Research Center 'Alexander Fleming', Vari, Greece
| | - Anargyros Skoulakis
- Institute for Bioinnovation, Biomedical Sciences Research Center 'Alexander Fleming', Vari, Greece
| | | | - Halit Ongen
- Department of Genetic Medicine and Development, University of Geneva Medical School, Geneva, Switzerland
- Swiss Institute of Bioinformatics, University of Geneva, Geneva, Switzerland
- Institute of Genetics and Genomics in Geneva, University of Geneva, Geneva, Switzerland
| | - Deborah Bielser
- Department of Genetic Medicine and Development, University of Geneva Medical School, Geneva, Switzerland
| | - Alexandra Planchon
- Department of Genetic Medicine and Development, University of Geneva Medical School, Geneva, Switzerland
| | - Luciana Romano
- Department of Genetic Medicine and Development, University of Geneva Medical School, Geneva, Switzerland
| | - Vaggelis Harokopos
- Institute for Bioinnovation, Biomedical Sciences Research Center 'Alexander Fleming', Vari, Greece
| | - Martin Reczko
- Institute for Fundamental Biomedical Science, Biomedical Sciences Research Center 'Alexander Fleming', Vari, Greece
| | - Panagiotis Moulos
- Institute for Fundamental Biomedical Science, Biomedical Sciences Research Center 'Alexander Fleming', Vari, Greece
- Center of New Biotechnologies & Precision Medicine, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Ioannis Griniatsos
- First Department of Surgery, National and Kapodistrian University of Athens, Medical School, Laiko Hospital, Athens, Greece
| | - Theodoros Diamantis
- First Department of Surgery, National and Kapodistrian University of Athens, Medical School, Laiko Hospital, Athens, Greece
| | - Emmanouil T Dermitzakis
- Department of Genetic Medicine and Development, University of Geneva Medical School, Geneva, Switzerland
| | - Jiannis Ragoussis
- Department of Human Genetics, McGill University Genome Centre, McGill University, Montréal, QC, Canada
- Department of Bioengineering, McGill University, Montréal, QC, Canada
| | - George Dedoussis
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, Athens, Greece
| | - Antigone S Dimas
- Institute for Bioinnovation, Biomedical Sciences Research Center 'Alexander Fleming', Vari, Greece.
| |
Collapse
|
6
|
Biernacka KM, Giri D, Hawton K, Segers F, Perks CM, Hamilton-Shield JP. Case report: Molecular characterisation of adipose-tissue derived cells from a patient with ROHHAD syndrome. Front Pediatr 2023; 11:1128216. [PMID: 37456561 PMCID: PMC10348915 DOI: 10.3389/fped.2023.1128216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 06/07/2023] [Indexed: 07/18/2023] Open
Abstract
There have been over 100 cases of Rapid-onset obesity with hypothalamic dysfunction, hypoventilation, and autonomic dysregulation (ROHHAD) syndrome reported, but there is currently no curative treatment for children with this condition. We aimed to better characterise adipose cells from a child with ROHHAD syndrome. We isolated pre-adipocytes from a 4 year-old female patient with ROHHAD syndrome and assessed proliferation rate of these cells. We evaluated levels of DLP-Pref-1(pre-adipocyte marker) using western blotting, and concentrations of interleukin-6(IL-6) using ELISA. We performed next-generation sequencing (NGS) and bioinformatic analyses on these cells compared to tissue from an age/sex-matched control. The two most up-/down-regulated genes were validated using QPCR. We successfully isolated pre-adipocytes from a fat biopsy, by confirming the presence of Pref-1 and differentiated them to mature adipocytes. Interleukin 6, (Il-6) levels were 5.6-fold higher in ROHHAD cells compared to a control age/sex-matched biopsy. NGS revealed 25,703 differentially expressed genes (DEGs) from ROHHAD cells vs. control of which 2,237 genes were significantly altered. The 20 most significantly up/down-regulated genes were selected for discussion. This paper describes the first transcriptomic analysis of adipose cells from a child with ROHHAD vs. normal control adipose tissue as a first step in identifying targetable pathways/mechanisms underlying this condition with novel therapeutic interventions.
Collapse
Affiliation(s)
- Kalina M. Biernacka
- Cancer Endocrinology Group, Bristol Medical School, Translational Health Sciences, Southmead Hospital, Bristol, United Kingdom
| | - Dinesh Giri
- Department of Paediatric Endocrinology and Diabetes, Bristol Royal Hospital for Children, Bristol, United Kingdom
| | - Katherine Hawton
- Department of Paediatric Endocrinology and Diabetes, Bristol Royal Hospital for Children, Bristol, United Kingdom
| | - Francisca Segers
- School of Biological Sciences, University of Bristol, Bristol, United Kingdom
| | - Claire M. Perks
- Cancer Endocrinology Group, Bristol Medical School, Translational Health Sciences, Southmead Hospital, Bristol, United Kingdom
| | - Julian P. Hamilton-Shield
- Department of Translational Health Sciences, Nutrition Theme, NIHR Bristol Biomedical Research Centre, Bristol Medical School, University of Bristol, UBHT Education Centre, Bristol, United Kingdom
| |
Collapse
|
7
|
Zhang R, Peng S, Zhu G. The role of secreted osteoclastogenic factor of activated T cells in bone remodeling. JAPANESE DENTAL SCIENCE REVIEW 2022; 58:227-232. [PMID: 35898473 PMCID: PMC9309401 DOI: 10.1016/j.jdsr.2022.07.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 06/05/2022] [Accepted: 07/10/2022] [Indexed: 12/23/2022] Open
Abstract
The process of bone remodeling is connected with the regulated balance between bone cell populations (including bone-forming osteoblasts, bone-resorbing osteoclasts, and the osteocyte). And the mechanism of bone remodeling activity is related to the major pathway, receptor activator of nuclear factor kappaB (RANK)/RANK ligand (RANKL)/osteoprotegerin (OPG) signaling axis. Recently, researchers have found a novel cytokine secreted by activated T cells, which is related to osteoclastogenesis in the absence of osteoblasts or RANKL, leading to bone destruction. They name it the secreted osteoclastogenic factor of activated T cells (SOFAT). SOFAT has been proven to play an essential role in bone remodeling, like mediating the bone resorption in rheumatoid arthritis (RA) and periodontitis. In this review, we outline the latest research concerning SOFAT and discuss the characteristics, location, and regulation of SOFAT. We also summarize the clinical progress of SOFAT and assume the future therapeutic target in some diseases related to bone remodeling.
Collapse
Affiliation(s)
- Ruonan Zhang
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shuang Peng
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Guangxun Zhu
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| |
Collapse
|
8
|
Age-related accumulation of advanced oxidation protein products promotes osteoclastogenesis through disruption of redox homeostasis. Cell Death Dis 2021; 12:1160. [PMID: 34907153 PMCID: PMC8671415 DOI: 10.1038/s41419-021-04441-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 11/16/2021] [Accepted: 11/25/2021] [Indexed: 11/27/2022]
Abstract
Enhanced osteoclastogenesis is one of the major causes of age-related bone loss. Aging is accompanied by accumulation of advanced oxidation protein products (AOPPs). However, whether AOPPs accumulation contributing to the osteoclastogenesis with aging remains unclear. Here, we showed that AOPPs accumulation was associated with the enhanced osteoclastogenesis and deterioration of bone microstructure in aged mice. In vitro, AOPPs directly induced osteoclastogenesis by interaction with receptor activator of nuclear factor κ B (RANK) and the receptor for advanced glycation end products (RAGE) in the primary bone marrow monocytes. Bindings of AOPPs to RANK and RAGE were able to activate nicotinamide adenine dinucleotide phosphate (NADPH) oxidase, trigger generation of reactive oxygen species, then induce phosphorylation of mitogen-activated protein kinases and c-fos, upregulation of the nuclear factor of activated T cell c1, eventually induce bone marrow monocytes to differentiate into mature osteoclasts. Chronic exposure to AOPPs enhanced osteoclastogenesis and bone loss in mice, which could be alleviated by NADPH oxidase inhibitor apocynin. Local injection of AOPPs into subperiosteal area induced bone resorption at the site of administration, which was similar to the effect of RANK ligand. Together, these results suggested that AOPPs could serve as a novel regulator of osteoclastogenesis and AOPPs accumulation might play an important role in the development of age-related bone loss.
Collapse
|
9
|
Meng T, Huang R, Jin J, Gao J, Liu F, Wei Z, Xu X, Chang Z, Lin J, Ta N, Huang Z, Yin H, Zhou W, Song D. The comparative integrated multi-omics analysis identifies CA2 as a novel target for chordoma. Neuro Oncol 2021; 23:1709-1722. [PMID: 34214167 DOI: 10.1093/neuonc/noab156] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Chordoma is a rare mesenchymal malignancy, with a high recurrence rate and unclear tumorigenic mechanism. Genetic alterations, epigenetic regulators, and chromatin spatial organization play crucial roles in the initiation and progression of chordoma. In the current study, we aim to uncover the novel therapeutical targets for chordoma via using integrated multi-omics analysis. METHODS The RNA-sequencing (RNA-seq), assay for transposable accessible chromatin by high throughput sequencing (ATAC-seq) and Hi-C were performed between chordoma and human nucleus pulposus (HNP), along with imageological examination and clinical information. The expressions of identified targets were validated by clinical samples and their function were further evaluated by cell and animal experiments via gene knockdown and inhibitors. RESULTS The integrated multi-omics analysis revealed the important roles of bone microenvironment in chordoma tumorigenesis. By comparing the hierarchical structures, CA2 and THNSL2 were identified in the switched compartments, cell-specific boundaries and loops. Additionally, CA2 was highly expressed in chordoma, but barely found in HNP. The cell growth and migration of chordoma cells were dramatically suppressed via inhibition of CA2 either with genetic deletion or pharmaceutical treatment with Dorzolamide HCl. Furthermore, Dorzolamide HCl also regulated the bone microenvironment by blocking the osteoclast differentiation of bone marrow monocytes. CONCLUSION This study uncovers the roles of bone microenvironment in the chordoma tumorigenesis and identifies CA2 as a novel therapeutic target for chordoma. Besides, our findings suggest Dorzolamide HCl as a promising therapeutic option for chordoma.
Collapse
Affiliation(s)
- Tong Meng
- Department of Orthopedics, Shanghai General Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China.,Tongji University Cancer Center, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Runzhi Huang
- Department of Orthopedics, Tongji Hospital, Tongji University School of Medicine, Tongji University, Shanghai, China.,Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Jiali Jin
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Jianxuan Gao
- Department of Orthopedics, Shanghai General Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Fuyan Liu
- Biomarker Technologies Corporation, Beijing, China
| | - Ziheng Wei
- Department of Orthopedics, Shanghai General Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Xiaowen Xu
- Department of Medical Imaging, Tongji Hospital, Tongji University School of Medicine, Tongji University, Shanghai, China
| | - Zhengyan Chang
- Department of Pathology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jun Lin
- Department of Pathology, Shanghai General Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Na Ta
- Department of Pathology, Shanghai Changhai Hospital, Navy Medical University, Shanghai, China
| | - Zongqiang Huang
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Huabin Yin
- Department of Orthopedics, Shanghai General Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Wang Zhou
- Departments of Neurovascular Center, Shanghai Changhai Hospital, Navy Medical University, Shanghai, China.,The Musculoskeletal laboratory, Institute of Biotechnology, University of Shanghai for Science and Technology, Shanghai, China
| | - Dianwen Song
- Department of Orthopedics, Shanghai General Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| |
Collapse
|
10
|
Napimoga MH, Dantas Formiga WD, Abdalla HB, Trindade-da-Silva CA, Venturin CM, Martinez EF, Rossaneis AC, Verri WA, Clemente-Napimoga JT. Secreted Osteoclastogenic Factor of Activated T Cells (SOFAT) Is Associated With Rheumatoid Arthritis and Joint Pain: Initial Evidences of a New Pathway. Front Immunol 2020; 11:1442. [PMID: 32849501 PMCID: PMC7399082 DOI: 10.3389/fimmu.2020.01442] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 06/03/2020] [Indexed: 12/27/2022] Open
Abstract
Rheumatoid arthritis (RA) has an inflammatory milieu in the synovial compartment, which is regulated by a complex cytokine and chemokine network that induces continuously degenerative and inflammatory reactions. The secreted osteoclastogenic factor of activated T cells (SOFAT) is a unique cytokine and represents an alternative pathway for osteoclast activation. In this study, we examined whether SOFAT is able to induce joint pain and investigated the presence of SOFAT in a Collagen-induced Arthritis (CIA) model and in human subjects. Here, we found that an intra-articular stimulation with SOFAT (1, 10, 100, or 1,000 ng/10 μl) in the knee joint significantly decreases the mechanical threshold in the hind paw of mice (p < 0.05). Moreover, after a second injection of SOFAT, the mechanical threshold decrease was sustained for up to 8 days (p < 0.05). In the CIA model, the immunohistochemical assay of knee joint showed positivity stained for SOFAT, and the mRNA and protein expression of SOFAT were significantly higher in the affected-group (p < 0.05). Besides, the mRNA of RANKL, IL-1β, IL-6, and IL-15 were significantly higher in the affected-group (p < 0.05). Finally, SOFAT was detected in the synovial fluid of RA patients, but not in OA patients (p < 0.05). In conclusion, SOFAT is up regulated in inflammatory milieu such as RA but not in non-inflammatory OA. SOFAT may be a novel molecule in the complex inflammatory phenotype of RA.
Collapse
Affiliation(s)
- Marcelo Henrique Napimoga
- Laboratoy of Neuroimmune Interface of Pain Research, Faculdade São Leopoldo Mandic, Instituto de Pesquisas São Leopoldo Mandic, Campinas, Brazil
| | - Weslley Danny Dantas Formiga
- Laboratoy of Neuroimmune Interface of Pain Research, Faculdade São Leopoldo Mandic, Instituto de Pesquisas São Leopoldo Mandic, Campinas, Brazil
| | - Henrique Ballassini Abdalla
- Laboratoy of Neuroimmune Interface of Pain Research, Faculdade São Leopoldo Mandic, Instituto de Pesquisas São Leopoldo Mandic, Campinas, Brazil
| | - Carlos Antônio Trindade-da-Silva
- Laboratoy of Neuroimmune Interface of Pain Research, Faculdade São Leopoldo Mandic, Instituto de Pesquisas São Leopoldo Mandic, Campinas, Brazil
| | | | | | - Ana Carolina Rossaneis
- Departamento de Ciências Patológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Waldiceu A Verri
- Departamento de Ciências Patológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Juliana Trindade Clemente-Napimoga
- Laboratoy of Neuroimmune Interface of Pain Research, Faculdade São Leopoldo Mandic, Instituto de Pesquisas São Leopoldo Mandic, Campinas, Brazil
| |
Collapse
|
11
|
Abdalla HB, Clemente-Napimoga JT, Trindade-da-Silva CA, Alves LJ, Prats RDS, Youssef A, Vieira Dos Santos PC, Buarque E Silva WA, Andrade E Silva F, Napimoga MH. Occlusion Heightened by Metal Crown Cementation is Aggressive for Periodontal Tissues. J Prosthodont 2020; 30:142-149. [PMID: 32783328 DOI: 10.1111/jopr.13235] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/07/2020] [Indexed: 12/29/2022] Open
Abstract
PURPOSE To investigate the effect of experimental traumatic occlusion (ETO) induced by metal crowns on alveolar bone loss. MATERIALS AND METHODS Metal crowns were custom-made for the lower first molars with occlusal discrepancy of 0.4 and 0.7 mm from the maximum intercuspation. Thirty-six animals were randomly divided into three groups (n = 12 animals per group): 0.4-mm hyperocclusion group, 0.7-mm hyperocclusion group and the sham group (no metal crown). Twenty-eight days after crown cementation, the animals were euthanized and gingival tissue was collected to assess cytokine levels of IL-17, IL-6, and TNF-α using enzyme-linked immunosorbent assay (ELISA). Mandibles were stained with 1% methylene blue and alveolar bone levels were quantified. Western blotting was used to quantify the expression of receptor activator of nuclear factor κ B (RANK), and its ligand (RANKL), secreted osteoclastogenic factor of activated T cells (SOFAT) and TNF-α-converting enzyme (TACE). Also, mandibles were histologically processed and stained with hematoxylin and eosin, from which the presence of osteoclast-like cells, multinucleated cells containing ≥3 nuclei was counted at 100× magnification. The data were analyzed using one-way ANOVA and Tukey tests. RESULTS Experimental occlusal trauma for 28 consecutive days significantly increased alveolar bone loss and multinucleated cell counts (p < 0.05). RANK, RANKL, SOFAT, TACE, IL-6, and TNF-α were significantly higher in gingival tissues of ETO groups (p < 0.05). IL-17 titers were unchanged among the groups (p > 0.05). CONCLUSION Experimental traumatic occlusion activates and sustains bone resorption pathways in the periodontium inducing alveolar bone resorption. As the intensity of occlusal trauma increased, alternative osteoclastic pathways were activated, such as TACE and SOFAT.
Collapse
Affiliation(s)
- Henrique Ballassini Abdalla
- Faculdade São Leopoldo Mandic, Instituto de Pesquisas São Leopoldo Mandic, Laboratoy of Neuroimmune Interface of Pain Research, Campinas, SP, Brazil
| | - Juliana Trindade Clemente-Napimoga
- Faculdade São Leopoldo Mandic, Instituto de Pesquisas São Leopoldo Mandic, Laboratoy of Neuroimmune Interface of Pain Research, Campinas, SP, Brazil
| | - Carlos Antônio Trindade-da-Silva
- Faculdade São Leopoldo Mandic, Instituto de Pesquisas São Leopoldo Mandic, Laboratoy of Neuroimmune Interface of Pain Research, Campinas, SP, Brazil
| | - Luciane Jorge Alves
- Faculdade São Leopoldo Mandic, Instituto São Leopoldo Mandic, Immunology, Campinas, SP, Brazil
| | - Roberta da Silva Prats
- Faculdade São Leopoldo Mandic, Instituto São Leopoldo Mandic, Immunology, Campinas, SP, Brazil
| | - Alexandre Youssef
- Faculdade São Leopoldo Mandic, Instituto São Leopoldo Mandic, Immunology, Campinas, SP, Brazil
| | - Paulo César Vieira Dos Santos
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas - UNICAMP, Piracicaba, São Paulo, Brazil
| | - Wilkens Aurélio Buarque E Silva
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas - UNICAMP, Piracicaba, São Paulo, Brazil
| | - Frederico Andrade E Silva
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas - UNICAMP, Piracicaba, São Paulo, Brazil
| | - Marcelo Henrique Napimoga
- Faculdade São Leopoldo Mandic, Instituto de Pesquisas São Leopoldo Mandic, Laboratoy of Neuroimmune Interface of Pain Research, Campinas, SP, Brazil.,Faculdade São Leopoldo Mandic, Instituto São Leopoldo Mandic, Immunology, Campinas, SP, Brazil
| |
Collapse
|
12
|
Mason AS, Miedzinska K, Kebede A, Bamidele O, Al-Jumaili AS, Dessie T, Hanotte O, Smith J. Diversity of endogenous avian leukosis virus subgroup E (ALVE) insertions in indigenous chickens. Genet Sel Evol 2020; 52:29. [PMID: 32487054 PMCID: PMC7268647 DOI: 10.1186/s12711-020-00548-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 05/26/2020] [Indexed: 12/05/2022] Open
Abstract
Background Avian leukosis virus subgroup E (ALVE) insertions are endogenous retroviruses (ERV) that are restricted to the domestic chicken and its wild progenitor. In commercial chickens, ALVE are known to have a detrimental effect on productivity and provide a source for recombination with exogenous retroviruses. The wider diversity of ALVE in non-commercial chickens and the role of these elements in ERV-derived immunity (EDI) are yet to be investigated. Results In total, 974 different ALVE were identified from 407 chickens sampled from village populations in Ethiopia, Iraq, and Nigeria, using the recently developed obsERVer bioinformatics identification pipeline. Eighty-eight percent of all identified ALVE were novel, bringing the known number of ALVE integrations to more than 1300 across all analysed chickens. ALVE content was highly lineage-specific and populations generally exhibited a large diversity of ALVE at low frequencies, which is typical for ERV involved in EDI. A significantly larger number of ALVE was found within or near coding regions than expected by chance, although a relative depletion of ALVE was observed within coding regions, which likely reflects selection against deleterious integrations. These effects were less pronounced than in previous analyses of chickens from commercial lines. Conclusions Identification of more than 850 novel ALVE has trebled the known diversity of these retroviral elements. This work provides the basis for future studies to fully quantify the role of ALVE in immunity against exogenous ALV, and development of programmes to improve the productivity and welfare of chickens in developing economies.
Collapse
Affiliation(s)
- Andrew S Mason
- The University of York, York, YO10 5DD, UK. .,The Roslin Institute and Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK.
| | - Katarzyna Miedzinska
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK
| | - Adebabay Kebede
- LiveGene-CTLGH, International Livestock Research Institute (ILRI), Addis Ababa, Ethiopia.,Addis Ababa University, Addis Ababa, Ethiopia
| | - Oladeji Bamidele
- African Chicken Genetic Gains, Department of Animal Sciences, Obafemi Awolowo, Ile Ife, Osun, Nigeria
| | - Ahmed S Al-Jumaili
- School of Life Sciences, The University of Nottingham, University Park, Nottingham, NG7 2RD, UK.,University of Anbar, Ramadi, Anbar, Iraq
| | - Tadelle Dessie
- LiveGene-CTLGH, International Livestock Research Institute (ILRI), Addis Ababa, Ethiopia
| | - Olivier Hanotte
- LiveGene-CTLGH, International Livestock Research Institute (ILRI), Addis Ababa, Ethiopia.,School of Life Sciences, The University of Nottingham, University Park, Nottingham, NG7 2RD, UK.,University of Anbar, Ramadi, Anbar, Iraq
| | - Jacqueline Smith
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK
| |
Collapse
|
13
|
Ying X, Jin X, Wang P, He Y, Zhang H, Ren X, Chai S, Fu W, Zhao P, Chen C, Ma G, Liu H. Integrative Analysis for Elucidating Transcriptomics Landscapes of Glucocorticoid-Induced Osteoporosis. Front Cell Dev Biol 2020; 8:252. [PMID: 32373610 PMCID: PMC7176994 DOI: 10.3389/fcell.2020.00252] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 03/25/2020] [Indexed: 11/13/2022] Open
Abstract
Osteoporosis is the most common bone metabolic disease, characterized by bone mass loss and bone microstructure changes due to unbalanced bone conversion, which increases bone fragility and fracture risk. Glucocorticoids are clinically used to treat a variety of diseases, including inflammation, cancer and autoimmune diseases. However, excess glucocorticoids can cause osteoporosis. Herein we performed an integrated analysis of two glucocorticoid-related microarray datasets. The WGCNA analysis identified 3 and 4 glucocorticoid-related gene modules, respectively. Differential expression analysis revealed 1047 and 844 differentially expressed genes in the two datasets. After integrating differentially expressed glucocorticoid-related genes, we found that most of the robust differentially expressed genes were up-regulated. Through protein-protein interaction analysis, we obtained 158 glucocorticoid-related candidate genes. Enrichment analysis showed that these genes are significantly enriched in the osteoporosis related pathways. Our results provided new insights into glucocorticoid-induced osteoporosis and potential candidate markers of osteoporosis.
Collapse
Affiliation(s)
- Xiaoxia Ying
- School of Stomatology, Dalian Medical University, Dalian, China
| | - Xiyun Jin
- School of Life Sciences and Technology, Harbin Institute of Technology, Harbin, China
| | - Pingping Wang
- School of Life Sciences and Technology, Harbin Institute of Technology, Harbin, China
| | - Yuzhu He
- School of Stomatology, Dalian Medical University, Dalian, China
| | - Haomiao Zhang
- School of Stomatology, Dalian Medical University, Dalian, China
| | - Xiang Ren
- School of Stomatology, Dalian Medical University, Dalian, China
| | - Songling Chai
- School of Stomatology, Dalian Medical University, Dalian, China
| | - Wenqi Fu
- School of Stomatology, Dalian Medical University, Dalian, China
| | - Pengcheng Zhao
- School of Stomatology, Dalian Medical University, Dalian, China
| | - Chen Chen
- School of Stomatology, Dalian Medical University, Dalian, China
| | - Guowu Ma
- School of Stomatology, Dalian Medical University, Dalian, China
| | - Huiying Liu
- School of Stomatology, Dalian Medical University, Dalian, China
| |
Collapse
|
14
|
Pan K, Hu Y, Wang Y, Li H, Patel M, Wang D, Wang Z, Han X. RANKL blockade alleviates peri-implant bone loss and is enhanced by anti-inflammatory microRNA-146a through TLR2/4 signaling. Int J Implant Dent 2020; 6:15. [PMID: 32291538 PMCID: PMC7156533 DOI: 10.1186/s40729-020-00210-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 03/12/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The present study was to determine the effect of local anti-RANKL antibody administration in the presence or absence of microRNA-146a on ligature-induced peri-implant bone resorption, and the potential role of TLR2/4 signaling in such effect. RESULTS Titanium implants were placed in the left maxilla alveolar bone 6 weeks after extraction of first and second molars in C57/BL6 wild-type (WT) and TLR2-/- TLR4-/- (TLR2/4 KO) mice. Silk ligatures were tied around the implants 4 weeks after implantation. Anti-RANKL antibody (500 μg/mL) with or without microRNA 146a (miR-146a) (100 nM) was injected into palatal gingiva around implant on days 3, 6, and 9 during 2 weeks of ligation period. Bone resorption around the implants was assessed by 2D imaging using area measurement and 3D imaging using micro-computed tomography (μCT). Real-time quantitative PCR (RT-qPCR) was used to determine the peri-implant gingival mRNA expression levels of pro-inflammatory cytokines (TNF-α) and osteoclastogenesis-related cytokines (RANKL). In both WT and TLR2/4 KO mice, the bone resorption around implants was significantly increased in the ligation only group when compared to the non-ligation group, but TLR2/4 KO mice showed significantly less bone loss compared to WT mice after ligation. As expected, gingival injection of anti-RANKL antibody significantly reduced bone loss compared with the ligation only group in both WT and TLR2/4 KO mice. Moreover, injection of miR-146a in addition to anti-RANKL antibody significantly enhanced the inhibition of bone loss in WT mice but not in TLR2/4 KO mice. Gingival mRNA expressions of RANKL were significantly reduced by anti-RANKL antibody treatment in both WT and TLR2/4 KO mice but were not affected by the additional miR-146a treatment. Gingival mRNA expression of TNF-α was significantly reduced by miR-146a treatment in WT mice but not in TLR2/4 KO mice. The number of gingival inflammatory cell infiltration and peri-implant TRAP-positive cell formation was significantly reduced by the additional miR-146a treatment in WT mice but not in TLR2/4 KO mice. CONCLUSIONS This study suggests that anti-inflammatory miR-146a enhance anti-RANKL-induced inhibition of peri-implant bone resorption through the regulation of TLR2/4 signaling and inhibition of TNF-α expression.
Collapse
Affiliation(s)
- Keqing Pan
- Department of Stomatology, The Affiliated Hospital of Qingdao University, College of Stomatology, Qingdao University, Qingdao, 266003, Shandong, China
- Department of Immunology and Infectious Diseases, The Forsyth Institute, 245 First Street, Cambridge, MA, 02142, USA
| | - Yang Hu
- Department of Immunology and Infectious Diseases, The Forsyth Institute, 245 First Street, Cambridge, MA, 02142, USA
| | - Yufeng Wang
- Department of Immunology and Infectious Diseases, The Forsyth Institute, 245 First Street, Cambridge, MA, 02142, USA
- Department of Oral Medicine, Ninth People's Hospital, National Clinical Research Center of Stomatology, , Shanghai Jiao Tong University School of Medicine; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, 200011, China
| | - Hao Li
- Department of Immunology and Infectious Diseases, The Forsyth Institute, 245 First Street, Cambridge, MA, 02142, USA
- Department of Prosthodontics, The Affiliated Hospital of Stomatology, Guangxi Medical University, Nanning, 530021, China
| | - Michele Patel
- Department of Immunology and Infectious Diseases, The Forsyth Institute, 245 First Street, Cambridge, MA, 02142, USA
| | - Danyang Wang
- Department of Stomatology, Beijing ChaoYang Hospital affiliated with Capital Medical University, Beijing, China
| | - Zuomin Wang
- Department of Stomatology, Beijing ChaoYang Hospital affiliated with Capital Medical University, Beijing, China
| | - Xiaozhe Han
- Department of Immunology and Infectious Diseases, The Forsyth Institute, 245 First Street, Cambridge, MA, 02142, USA.
| |
Collapse
|
15
|
Exploring the Interface between Inflammatory and Therapeutic Glucocorticoid Induced Bone and Muscle Loss. Int J Mol Sci 2019; 20:ijms20225768. [PMID: 31744114 PMCID: PMC6888251 DOI: 10.3390/ijms20225768] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 11/12/2019] [Accepted: 11/14/2019] [Indexed: 02/02/2023] Open
Abstract
Due to their potent immunomodulatory anti-inflammatory properties, synthetic glucocorticoids (GCs) are widely utilized in the treatment of chronic inflammatory disease. In this review, we examine our current understanding of how chronic inflammation and commonly used therapeutic GCs interact to regulate bone and muscle metabolism. Whilst both inflammation and therapeutic GCs directly promote systemic osteoporosis and muscle wasting, the mechanisms whereby they achieve this are distinct. Importantly, their interactions in vivo are greatly complicated secondary to the directly opposing actions of GCs on a wide array of pro-inflammatory signalling pathways that underpin catabolic and anti-anabolic metabolism. Several clinical studies have attempted to address the net effects of therapeutic glucocorticoids on inflammatory bone loss and muscle wasting using a range of approaches. These have yielded a wide array of results further complicated by the nature of inflammatory disease, underlying the disease management and regimen of GC therapy. Here, we report the latest findings related to these pathway interactions and explore the latest insights from murine models of disease aimed at modelling these processes and delineating the contribution of pre-receptor steroid metabolism. Understanding these processes remains paramount in the effective management of patients with chronic inflammatory disease.
Collapse
|
16
|
Chaparro M, Aterido A, Guerra I, Iborra M, Cabriada JL, Bujanda L, Taxonera C, García-Sánchez V, Marín-Jiménez I, Barreiro-de Acosta M, Vera I, Martín-Arranz MD, Hernández-Breijo B, Mesonero F, Sempere L, Gomollón F, Hinojosa J, Bermejo F, Beltrán B, Rodríguez-Pescador A, Banales JM, Olivares D, Aguilar-Melero P, Menchén L, Ferreiro-Iglesias R, Blazquez Gómez I, Benitez García B, Guijarro LG, Marin AC, Bernardo D, Marsal S, Julia A, Gisbert JP. Functional rare variants influence the clinical response to anti-TNF therapy in Crohn's disease. Therap Adv Gastroenterol 2019; 12:1756284819867848. [PMID: 31598133 PMCID: PMC6764039 DOI: 10.1177/1756284819867848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 06/28/2019] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND The effect of low-frequency functional variation on anti-tumor necrosis factor alpha (TNF) response in Crohn's disease (CD) patients remains unexplored. The objective of this study was to investigate the impact of functional rare variants in clinical response to anti-TNF therapy in CD. METHODS CD anti-TNF naïve patients starting anti-TNF treatment due to active disease [Crohn's Disease Activity Index (CDAI > 150)] were included. The whole genome was sequenced using the Illumina Hiseq4000 platform. Clinical response was defined as a CDAI score <150 at week 14 of anti-TNF treatment. Low-frequency variants were annotated and classified according to their damaging potential. The whole genome of CD patients was screened to identify homozygous loss-of-function (LoF) variants. The TNF signaling pathway was tested for overabundance of damaging variants using the SKAT-O method. Functional implication of the associated rare variation was evaluated using cell-type epigenetic enrichment analyses. RESULTS A total of 41 consecutive CD patients were included; 3250 functional rare variants were identified (2682 damaging and 568 LoF variants). Two homozygous LoF mutations were found in HLA-B and HLA-DRB1 genes associated with lack of response and remission, respectively. Genome-wide LoF variants were enriched in epigenetic marks specific for the gastrointestinal tissue (colon, p = 4.11e-4; duodenum, p = 0.011). The burden of damaging variation in the TNF signaling pathway was associated with response to anti-TNF therapy (p = 0.016); damaging variants were enriched in epigenetic marks from CD8+ (p = 6.01e-4) and CD4+ (p = 0.032) T cells. CONCLUSIONS Functional rare variants are involved in the response to anti-TNF therapy in CD. Cell-type enrichment analysis suggests that the gut mucosa and CD8+ T cells are the main mediators of this response.
Collapse
Affiliation(s)
| | | | - Iván Guerra
- Gastroenterology Unit, Hospital Universitario de
Fuenlabrada, Instituto de Investigación de Hospital La Paz (IdiPaz), Madrid,
Spain
| | | | - Jose Luis Cabriada
- Gastroenterology Unit, Hospital Universitario de
Galdakano, Vizcaya, Spain
| | | | - Carlos Taxonera
- Gastroenterology Unit, Hospital Universitario
Clínico San Carlos and IdISSC, Madrid, Spain
| | | | - Ignacio Marín-Jiménez
- Gastroenterology Unit, Hospital Universitario
Gregorio Marañón e IiSGM, Madrid, Spain
| | | | - Isabel Vera
- Gastroenterology Unit, Hospital Universitario
Puerta de Hierro Majadahonda, Madrid, Spain
| | | | - Borja Hernández-Breijo
- Universidad de Alcalá, Alcalá de Henares,
Spain,Immuno-Rheumatology Research Group. IdiPaz.
Hospital Universitario La Paz, Madrid, Spain
| | - Francisco Mesonero
- Gastroenterology Unit, Hospital Universitario
Ramón y Cajal, Madrid, Spain
| | - Laura Sempere
- Gastroenterology Unit, Hospital Universitario
Alicante, Alicante, Spain
| | | | - Joaquín Hinojosa
- Gastroenterology Unit, Hospital Universitario
Manises, Valencia, Spain
| | - Fernando Bermejo
- Gastroenterology Unit, Hospital Universitario
de Fuenlabrada, Instituto de Investigación de Hospital La Paz (IdiPaz),
Madrid, Spain
| | | | | | | | - David Olivares
- Gastroenterology Unit, Hospital Universitario
Clínico San Carlos and IdISSC, Madrid, Spain
| | - Patricia Aguilar-Melero
- Gastroenterology Unit, Instituto Maimónides de
Investigación Biomédica de Córdoba (IMIBIC), Hospital Universitario Reina
Sofía/Universidad de Córdoba, Spain
| | - Luis Menchén
- Gastroenterology Unit, Hospital Universitario
Gregorio Marañón e IiSGM, Madrid, Spain
| | - Rocío Ferreiro-Iglesias
- Gastroenterology Unit, Hospital Universitario
Clínico de Santiago, Santiago de Compostela, Spain
| | - Isabel Blazquez Gómez
- Gastroenterology Unit, Hospital Universitario
Puerta de Hierro Majadahonda, Madrid, Spain
| | | | | | | | | | - Sara Marsal
- Rheumatology Research Group, Vall d’Hebron
Research Institute, Barcelona, Spain
| | | | | |
Collapse
|
17
|
|
18
|
Strunk D, Schmidt-Pogoda A, Beuker C, Milles LS, Korsukewitz C, Meuth SG, Minnerup J. Biomarkers in Vasculitides of the Nervous System. Front Neurol 2019; 10:591. [PMID: 31244756 PMCID: PMC6562258 DOI: 10.3389/fneur.2019.00591] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Accepted: 05/20/2019] [Indexed: 12/13/2022] Open
Abstract
Besides being affected by the rare and severe primary angiitis of the central nervous system (PACNS) the nervous system is also affected by primary systemic vasculitides (PSV). In contrast to PACNS, PSV affect not only the central but also the peripheral nervous system, resulting in a large array of potential symptoms. Given the high burden of disease, difficulties in distinguishing between differential diagnoses, and incomplete pathophysiological insights, there is an urgent need for additional precise diagnostic tools to enable an earlier diagnosis and initiation of effective treatments. Methods available to date, such as inflammatory markers, antibodies, cerebrospinal fluid (CSF) analysis, imaging, and biopsy, turn out to be insufficient to meet all current challenges. We highlight the use of biomarkers as an approach to extend current knowledge and, ultimately, improve patient management. Biomarkers are considered to be useful for disease diagnosis and monitoring, for predicting response to treatment, and for prognosis in clinical practice, as well as for establishing outcome parameters in clinical trials. In this article, we review the recent literature on biomarkers which have been applied in the context of different types of nervous system vasculitides including PACNS, giant-cell arteritis, Takayasu's arteritis, polyarteritis nodosa, ANCA (anti-neutrophil cytoplasm antibody)-associated vasculitides, cryoglobulinemic vasculitis, IgA vasculitis, and Behçet's disease. Overall, the majority of biomarkers is not specific for vasculitides of the nervous system.
Collapse
Affiliation(s)
- Daniel Strunk
- Department of Neurology, Institute for Translational Neurology, University of Münster, Münster, Germany
| | - Antje Schmidt-Pogoda
- Department of Neurology, Institute for Translational Neurology, University of Münster, Münster, Germany
| | - Carolin Beuker
- Department of Neurology, Institute for Translational Neurology, University of Münster, Münster, Germany
| | - Lennart S Milles
- Department of Neurology, Institute for Translational Neurology, University of Münster, Münster, Germany
| | - Catharina Korsukewitz
- Department of Neurology, Institute for Translational Neurology, University of Münster, Münster, Germany
| | - Sven G Meuth
- Department of Neurology, Institute for Translational Neurology, University of Münster, Münster, Germany
| | - Jens Minnerup
- Department of Neurology, Institute for Translational Neurology, University of Münster, Münster, Germany
| |
Collapse
|
19
|
Ponzetti M, Rucci N. Updates on Osteoimmunology: What's New on the Cross-Talk Between Bone and Immune System. Front Endocrinol (Lausanne) 2019; 10:236. [PMID: 31057482 PMCID: PMC6482259 DOI: 10.3389/fendo.2019.00236] [Citation(s) in RCA: 123] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 03/25/2019] [Indexed: 12/11/2022] Open
Abstract
The term osteoimmunology was coined many years ago to describe the research field that deals with the cross-regulation between bone cells and the immune system. As a matter of fact, many factors that are classically considered immune-related, such as InterLeukins (i.e., IL-6, -11, -17, and -23), Tumor Necrosis Factor (TNF)-α, Receptor-Activator of Nuclear factor Kappa B (RANK), and its Ligand (RANKL), Nuclear Factor of Activated T-cell, cytoplasmatic-1 (NFATc1), and others have all been found to be crucial in osteoclast and osteoblast biology. Conversely, bone cells, which we used to think would only regulate each other and take care of remodeling bone, actually regulate immune cells, by creating the so-called "endosteal niche." Both osteoblasts and osteoclasts participate to this niche, either by favoring engraftment, or mobilization of Hematopoietic Stem Cells (HSCs). In this review, we will describe the main milestones at the base of the osteoimmunology and present the key cellular players of the bone-immune system cross-talk, including HSCs, osteoblasts, osteoclasts, bone marrow macrophages, osteomacs, T- and B-lymphocytes, dendritic cells, and neutrophils. We will also briefly describe some pathological conditions in which the bone-immune system cross-talk plays a crucial role, with the final aim to portray the state of the art in the mechanisms regulating the bone-immune system interplay, and some of the latest molecular players in the field. This is important to encourage investigation in this field, to identify new targets in the treatment of bone and immune diseases.
Collapse
|
20
|
Zhu X, Zeng Z, Qiu D, Chen J. Vγ9Vδ2 T cells inhibit immature dendritic cell transdifferentiation into osteoclasts through downregulation of RANK, c‑Fos and ATP6V0D2. Int J Mol Med 2018; 42:2071-2079. [PMID: 30066839 PMCID: PMC6108864 DOI: 10.3892/ijmm.2018.3791] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 07/10/2018] [Indexed: 01/16/2023] Open
Abstract
Osteoimmunological studies have revealed that T cells exert a powerful impact on the formation and activity of osteoclasts and bone remodeling. Evidence demonstrates that immature dendritic cells (iDCs) are more efficient transdifferentiating into osteoclasts (OCs) than monocytes. However, whether Vγ9Vδ2 T (γδ T) cells stimulate or inhibit iDC transdifferentiation into OCs has never been reported. The aim of the present study was to investigate the effects of γδ T cells on this transdifferentiation process. γδ T cells and iDCs were isolated from the peripheral blood of healthy volunteers separately and were co-cultured with Transwelll inserts, with γδ T cells in the upper chamber and iDCs in the lower chamber. IDCs were treated with macrophage-colony stimulating factor and receptor activator of nuclear factor-κB (RANK) ligand. Tartrate resistant acid phosphatase (TRAP) assay and dentine resorption assay were performed to detect OC formation and their resorption capacity, respectively. The mRNA expression of OCs was examined using a micro-array and real time-quantitative polymerase chain reaction to trace the changes during iDC transdifferentiation into OCs. The results demonstrated that γδ T cells significantly inhibited the generation of the TRAP-positive OCs from iDCs and their resorption capacity. The microarray analysis identified decreased expression level of Fos proto-oncogene AP-1 transcription factor subunit (c-Fos), ATPase H+ transporting V0 subunit d (ATP6V0D2) and cathepsin K when iDCs were co-cultured with γδ T cells. These genes are associated with OC differentiation, indicating that γδ T cells suppressed iDCs osteoclastogenesis by downregulation of the RANK/c-Fos/ATP6V0D2 signaling pathway. The present findings provide novel insights into the interactions between human γδ T cells and iDCs, and demonstrate that γδ T cells are capable of inhibiting OC formation and their activity via downregulation of genes associated with OC differentiation.
Collapse
Affiliation(s)
- Xiaolin Zhu
- The First Clinical Medical College of Fujian Medical University, Fuzhou, Fujian 350005, P.R. China
| | - Zhiyong Zeng
- The First Clinical Medical College of Fujian Medical University, Fuzhou, Fujian 350005, P.R. China
| | - Dongbiao Qiu
- The First Clinical Medical College of Fujian Medical University, Fuzhou, Fujian 350005, P.R. China
| | - Junmin Chen
- The First Clinical Medical College of Fujian Medical University, Fuzhou, Fujian 350005, P.R. China
| |
Collapse
|
21
|
Hajishengallis G, Korostoff JM. Revisiting the Page & Schroeder model: the good, the bad and the unknowns in the periodontal host response 40 years later. Periodontol 2000 2018; 75:116-151. [PMID: 28758305 DOI: 10.1111/prd.12181] [Citation(s) in RCA: 135] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In their classic 1976 paper, Page & Schroeder described the histopathologic events and the types of myeloid cells and lymphocytes involved in the initiation and progression of inflammatory periodontal disease. The staging of periodontal disease pathogenesis as 'initial', 'early', 'established' and 'advanced' lesions productively guided subsequent research in the field and remains fundamentally valid. However, major advances regarding the cellular and molecular mechanisms underlying the induction, regulation and effector functions of immune and inflammatory responses necessitate a reassessment of their work and its integration with emerging new concepts. We now know that each type of leukocyte is actually represented by functionally distinct subsets with different, or even conflicting, roles in immunity and inflammation. Unexpectedly, neutrophils, traditionally regarded as merely antimicrobial effectors in acute conditions and protagonists of the 'initial' lesion, are currently appreciated for their functional versatility and critical roles in chronic inflammation. Moreover, an entirely new field of study, osteoimmunology, has emerged and sheds light on the impact of immunoinflammatory events on the skeletal system. These developments and the molecular dissection of crosstalk interactions between innate and adaptive leukocytes, as well as between the immune system and local homeostatic mechanisms, offer a more nuanced understanding of the host response in periodontitis, with profound implications for treatment. At the same time, deeper insights have generated new questions, many of which remain unanswered. In this review, 40 years after Page & Schroeder proposed their model, we summarize enduring and emerging advances in periodontal disease pathogenesis.
Collapse
|
22
|
Jettar V, Napimoga MH, Freitas F, Clemente-Napimoga JT, Suzuki SS, Montalli VA, Garcez AS. Effects of Photobiomodulation on SOFAT, A T-cell-derived Cytokine, May Explain Accelerated Orthodontic Tooth Movement. Photochem Photobiol 2018; 94:604-610. [DOI: 10.1111/php.12878] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 11/29/2017] [Indexed: 11/28/2022]
Affiliation(s)
- Viviane Jettar
- Orthodontics; São Leopoldo Mandic Institute and Research Center; Campinas São Paulo Brazil
| | - Marcelo H. Napimoga
- São Leopoldo Mandic Institute and Research Center; Campinas São Paulo Brazil
| | - Fabiana Freitas
- Piracicaba Dental School; Department of Physiology; State University of Campinas; Piracicaba São Paulo Brazil
| | | | - Selly S. Suzuki
- Orthodontics; São Leopoldo Mandic Institute and Research Center; Campinas São Paulo Brazil
| | - Victor A. Montalli
- São Leopoldo Mandic Institute and Research Center; Campinas São Paulo Brazil
| | - Aguinaldo S. Garcez
- Orthodontics; São Leopoldo Mandic Institute and Research Center; Campinas São Paulo Brazil
| |
Collapse
|
23
|
Immune Response in Patients with Mandibular Fracture Complicated with Suppuration of a Bone Wound. JOURNAL OF BIOMIMETICS BIOMATERIALS AND BIOMEDICAL ENGINEERING 2018. [DOI: 10.4028/www.scientific.net/jbbbe.36.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Modern clinical observations focused on the increasing complications at the open mandible fracture, which indicated about severe immune suppression in patients with this pathology. For estimation cellular immunity in a peripheral blood there were examined 25 patients in basic group (15 men, 10 women) with mandible fracture, complicated with abscess of a bone wound; control group included 20 practically healthy persons (10 men and 10 women). To assess cellular immunity in the peripheral blood were determined: absolute number of leukocytes, relative amount of lymphocytes; phagocytic activity. Determination relative number of T–lymphocytes (phenotype CD2+, СD3+) and B – lymphocytes (phenotype СD22+) was performed by method of immunofluorescence with monoclonal antibodies. In a case of mandible fracture, complicated with abscess of bone wound and leukocytosis, in the patients were reduced parameters of cellular immunity: on 40.3% – phagocytic index, on 47.7% – phagocytic number, on 43.9% – content of CD2+– and CD3+– lymphocytes. Content of null cells was increased on 76.8 %
Collapse
|
24
|
|
25
|
Different Bone Healing Effects of Undifferentiated and Osteogenic Differentiated Mesenchymal Stromal Cell Sheets in Canine Radial Fracture Model. Tissue Eng Regen Med 2017; 15:115-124. [PMID: 30603539 PMCID: PMC6171633 DOI: 10.1007/s13770-017-0092-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 10/13/2017] [Accepted: 10/17/2017] [Indexed: 02/08/2023] Open
Abstract
Cell sheets technology is being available for fracture healing. This study was performed to clarify bone healing mechanism of undifferentiated (UCS) and osteogenic (OCS) differentiated mesenchymal stromal cell (MSC) sheets in the fracture model of dogs. UCS and OCS were harvested at 10 days of culture. Transverse fractures at the radius of six beagle dogs were assigned into three groups (n = 4 in each group) i.e. UCS, OCS and control. The fractures were fixed with a 2.7 mm locking plate and six screws. Cell sheets were wrapped around the fracture site. Bones were harvested 8 weeks after operation, then scanned by micro-computed tomography (micro-CT) and analyzed histopathologically. The micro-CT revealed different aspects of bone regeneration among the groups. The percentages of external callus volume out of total bone volume in control, UCS, and OCS groups were 42.1, 13.0 and 4.9% (p < 0.05) respectively. However, the percentages of limbs having connectivity of gaps were 25, 12.5 and 75% respectively. In histopathological assessments, OCS group showed well organized and mature woven bone with peripheral cartilage at the fracture site, whereas control group showed cartilage formation without bone maturation or ossification at the fracture site. Meanwhile, fracture site was only filled with fibrous connective tissue without endochondral ossification and bone formation in UCS group. It was suggested that the MSC sheets reduced the quantity of external callus, and OCS induced the primary bone healing.
Collapse
|
26
|
Wang W, Li M, Luo M, Shen M, Xu C, Xu G, Chen Y, Xia L. Naringenin inhibits osteoclastogenesis through modulation of helper T cells‐secreted IL‐4. J Cell Biochem 2017; 119:2084-2093. [PMID: 28834554 DOI: 10.1002/jcb.26370] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 08/22/2017] [Indexed: 12/22/2022]
Affiliation(s)
- Wengang Wang
- Department of OrthopaedicsThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanP.R. China
| | - Mingjun Li
- Department of OncologyThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanP.R. China
| | - Ming Luo
- Department of OrthopaedicsThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanP.R. China
| | - Mingkui Shen
- Department of OrthopaedicsThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanP.R. China
| | - Chen Xu
- Department of OrthopaedicsThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanP.R. China
| | - Genzhong Xu
- Department of OrthopaedicsThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanP.R. China
| | - Yaokun Chen
- Department of OrthopaedicsThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanP.R. China
| | - Lei Xia
- Department of OrthopaedicsThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanP.R. China
| |
Collapse
|
27
|
Li S, Yin H, Zhang K, Wang T, Yang Y, Liu X, Chang X, Zhang M, Yan X, Ren Y, Pan W, Zhang L. Effector T helper cell populations are elevated in the bone marrow of rheumatoid arthritis patients and correlate with disease severity. Sci Rep 2017; 7:4776. [PMID: 28684770 PMCID: PMC5500482 DOI: 10.1038/s41598-017-05014-8] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 05/23/2017] [Indexed: 01/05/2023] Open
Abstract
This study is to investigate the frequencies of T-helper (Th)22, Th17 and Th1 cells and the levels of related cytokines in subchondral bone marrow in patients with rheumatoid arthritis (RA). Bone marrow and peripheral blood samples were collected from RA, osteoarthritis (OA) patients and healthy controls. The frequencies of Th22, Th17, and Th1 cells were examined by flow cytometry. Levels of interleukin (IL)-22, IL-17 and IFN-γ were examined by ELISA. Disease Activity Score in 28 joints (DAS28) of RA patients were analyzed. Bone marrow Th22, Th17 and Th1 cells in RA patients were markedly increased comparing to OA or healthy controls. Each T cell subset in bone marrow was elevated comparing with that in the peripheral blood in RA patients. Consistently, plasma levels of IL-22 and IL-17 were elevated in RA patients, and the elevation was more notable in the bone marrow than in the peripheral blood. Additionally, the percentages of Th22, Th17 and Th1 cells as well as the levels of IL-22 and IL-17 in bone marrow were positively correlated with DAS28. These results suggest that local pro-inflammatory Th cells are elevated in bone marrow, which may play an important role in situ in RA and contribute to the pathogenesis of in RA.
Collapse
Affiliation(s)
- Shufeng Li
- Department of Orthopedics, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, 250014, P.R. China
| | - Han Yin
- Department of Orthopedics, Liaocheng People's Hospital and Clinical School of Taishan Medical University, Liaocheng, 252000, P.R. China
| | - Kaining Zhang
- Department of Orthopedics, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, 250014, P.R. China
| | - Ting Wang
- Department of Obstetrics and Gynecology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, 250014, P.R. China
| | - Yun Yang
- Department of Orthopedics, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, 250014, P.R. China
| | - Xinguang Liu
- Department of Hematology, Qilu Hospital, Shandong University, Jinan, 250012, P.R. China
| | - Xiaotian Chang
- Medical Research Center, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, 250014, P.R. China
| | - Ming Zhang
- Department of Orthopedics, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, 250014, P.R. China
| | - Xinfeng Yan
- Department of Orthopedics, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, 250014, P.R. China
| | - Yanjun Ren
- Department of Orthopedics, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, 250014, P.R. China
| | - Wenping Pan
- Department of Rheumatology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, 250014, P.R. China
| | - Lei Zhang
- Department of Orthopedics, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, 250014, P.R. China.
| |
Collapse
|
28
|
Tanaka S. RANKL-Independent Osteoclastogenesis: A Long-Standing Controversy. J Bone Miner Res 2017; 32:431-433. [PMID: 28177151 DOI: 10.1002/jbmr.3092] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 01/29/2017] [Accepted: 02/01/2017] [Indexed: 01/02/2023]
Affiliation(s)
- Sakae Tanaka
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| |
Collapse
|
29
|
|
30
|
Franco-Barrera MJ, Zavala-Cerna MG, Aguilar-Portillo G, Sánchez-Gomez DB, Torres-Bugarin O, Franco-Barrera MA, Roa-Encarnacion CM. Gorham-Stout Disease: a Clinical Case Report and Immunological Mechanisms in Bone Erosion. Clin Rev Allergy Immunol 2016; 52:125-132. [DOI: 10.1007/s12016-016-8594-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
31
|
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.
Collapse
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
| |
Collapse
|
32
|
Bhattacharjee M, Balakrishnan L, Renuse S, Advani J, Goel R, Sathe G, Keshava Prasad TS, Nair B, Jois R, Shankar S, Pandey A. Synovial fluid proteome in rheumatoid arthritis. Clin Proteomics 2016; 13:12. [PMID: 27274716 PMCID: PMC4893419 DOI: 10.1186/s12014-016-9113-1] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 04/26/2016] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Rheumatoid arthritis (RA) is a chronic autoinflammatory disorder that affects small joints. Despite intense efforts, there are currently no definitive markers for early diagnosis of RA and for monitoring the progression of this disease, though some of the markers like anti CCP antibodies and anti vimentin antibodies are promising. We sought to catalogue the proteins present in the synovial fluid of patients with RA. It was done with the aim of identifying newer biomarkers, if any, that might prove promising in future. METHODS To enrich the low abundance proteins, we undertook two approaches-multiple affinity removal system (MARS14) to deplete some of the most abundant proteins and lectin affinity chromatography for enrichment of glycoproteins. The peptides were analyzed by LC-MS/MS on a high resolution Fourier transform mass spectrometer. RESULTS This effort was the first total profiling of the synovial fluid proteome in RA that led to identification of 956 proteins. From the list, we identified a number of functionally significant proteins including vascular cell adhesion molecule-1, S100 proteins, AXL receptor protein tyrosine kinase, macrophage colony stimulating factor (M-CSF), programmed cell death ligand 2 (PDCD1LG2), TNF receptor 2, (TNFRSF1B) and many novel proteins including hyaluronan-binding protein 2, semaphorin 4A (SEMA4D) and osteoclast stimulating factor 1. Overall, our findings illustrate the complex and dynamic nature of RA in which multiple pathways seems to be participating actively. CONCLUSIONS The use of high resolution mass spectrometry thus, enabled identification of proteins which might be critical to the progression of RA.
Collapse
Affiliation(s)
- Mitali Bhattacharjee
- />Institute of Bioinformatics, International Technology Park, Bangalore, 560066 India
- />Amrita School of Biotechnology, Amrita University, Kollam, 690525 India
| | - Lavanya Balakrishnan
- />Institute of Bioinformatics, International Technology Park, Bangalore, 560066 India
- />Department of Biotechnology, Kuvempu University, Shankaraghatta, 577451 India
| | - Santosh Renuse
- />Institute of Bioinformatics, International Technology Park, Bangalore, 560066 India
- />Amrita School of Biotechnology, Amrita University, Kollam, 690525 India
| | - Jayshree Advani
- />Institute of Bioinformatics, International Technology Park, Bangalore, 560066 India
- />Manipal University, Madhav Nagar, Manipal, 576104 India
| | - Renu Goel
- />Institute of Bioinformatics, International Technology Park, Bangalore, 560066 India
- />Department of Biotechnology, Kuvempu University, Shankaraghatta, 577451 India
| | - Gajanan Sathe
- />Institute of Bioinformatics, International Technology Park, Bangalore, 560066 India
- />Manipal University, Madhav Nagar, Manipal, 576104 India
| | - T. S. Keshava Prasad
- />Institute of Bioinformatics, International Technology Park, Bangalore, 560066 India
- />Amrita School of Biotechnology, Amrita University, Kollam, 690525 India
| | - Bipin Nair
- />Amrita School of Biotechnology, Amrita University, Kollam, 690525 India
| | - Ramesh Jois
- />Department of Rheumatology, Fortis Hospital, Bangalore, 560066 India
| | - Subramanian Shankar
- />Department of Rheumatology, Medical Division, Command Hospital (Air Force), Bangalore, 560007 India
| | - Akhilesh Pandey
- />McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, 733 N. Broadway, BRB 527, Baltimore, MD 21205 USA
- />Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD 21205 USA
- />Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD 21205 USA
- />Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD 21205 USA
| |
Collapse
|
33
|
Expression of SOFAT by T- and B-lineage cells may contribute to bone loss. Mol Med Rep 2016; 13:4252-8. [PMID: 27035849 PMCID: PMC4838117 DOI: 10.3892/mmr.2016.5045] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 03/02/2016] [Indexed: 12/17/2022] Open
Abstract
A novel T cell-secreted cytokine, termed secreted osteoclastogenic factor of activated T cells (SOFAT) that induces osteoclastic bone resorption in a RANKL-independent manner, has been described. Our group have previously reported that SOFAT is highly expressed in gingival tissues of patients with chronic periodontitis suggesting a putative role in the bone loss associated with periodontal disease. The aim of the present study was to identify other potential cellular sources of SOFAT in the bone resorptive lesions of patients with periodontal disease. Gingival tissues were biopsied from systemically healthy subjects without periodontal disease (n=5) and patients with chronic periodontitis (n=5), and the presence of SOFAT was analyzed by immunohistochemistry and immunofluorescence staining. The present data demonstrated marked SOFAT staining in diseased periodontal tissues that was predominantly associated with the lymphocytic infiltration of gingival tissues. Notably, in addition to CD3+ T cells, B‑lineage cells including plasma cells also exhibited strong staining for SOFAT. As SOFAT has not previously been reported in B‑lineage cells, splenic T cells and B cells were further purified from BALB/c mice and activated using CD3/CD28 and lipopolysaccharide, respectively. SOFAT was quantified by reverse transcription‑quantitative polymerase chain reaction and was shown to be significantly expressed (P<0.05) in both activated T cells and B cells compared with unstimulated cells. These data support a putative role of SOFAT in the bone loss associated with chronic periodontal disease. In addition, to the best of our knowledge, this study demonstrates for the first time that in addition to T cells, B-lineage cells may also be a significant source of SOFAT in inflammatory states.
Collapse
|
34
|
Comparison of gene expression patterns from zebrafish embryos between pure silver nanomaterial and mixed silver nanomaterial containing cells of Hydra magnipapillata. Mol Cell Toxicol 2015. [DOI: 10.1007/s13273-015-0030-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
35
|
The role of "bone immunological niche" for a new pathogenetic paradigm of osteoporosis. Anal Cell Pathol (Amst) 2015; 2015:434389. [PMID: 26491648 PMCID: PMC4605147 DOI: 10.1155/2015/434389] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Accepted: 09/09/2015] [Indexed: 12/13/2022] Open
Abstract
Osteoporosis is characterized by low bone mass and microarchitectural deterioration of bone tissue. The etiology and pathogenetic mechanisms of osteoporosis have not been clearly elucidated. Osteoporosis is linked to bone resorption by the activation of the osteoclastogenic process. The breakdown of homeostasis among pro- and antiosteoclastogenic cells causes unbalanced bone remodeling. The complex interactions among these cells in the bone microenvironment involve several mediators and proinflammatory pathways. Thus, we may consider the bone microenvironment as a complex system in which local and systemic immunity are regulated and we propose to consider it as an "immunological niche." The study of the "bone immunological niche" will permit a better understanding of the complex cell trafficking which regulates bone resorption and disease. The goal of a perfect therapy for osteoporosis would be to potentiate good cells and block the bad ones. In this scenario, additional factors may take part in helping or hindering the proosteoblastogenic factors. Several proosteoblastogenic and antiosteoclastogenic agents have already been identified and some have been developed and commercialized as biological therapies for osteoporosis. Targeting the cellular network of the "bone immunological niche" may represent a successful strategy to better understand and treat osteoporosis and its complications.
Collapse
|
36
|
Hypoxia-reperfusion affects osteogenic lineage and promotes sickle cell bone disease. Blood 2015; 126:2320-8. [PMID: 26330244 DOI: 10.1182/blood-2015-04-641969] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Accepted: 08/07/2015] [Indexed: 11/20/2022] Open
Abstract
Sickle cell disease (SCD) is a worldwide distributed hereditary red cell disorder, characterized by severe organ complication. Sickle bone disease (SBD) affects a large part of the SCD patient population, and its pathogenesis has been only partially investigated. Here, we studied bone homeostasis in a humanized mouse model for SCD. Under normoxia, SCD mice display bone loss and bone impairment, with increased osteoclast and reduced osteoblast activity. Hypoxia/reperfusion (H/R) stress, mimicking acute vaso-occlusive crises (VOCs), increased bone turnover, osteoclast activity (RankL), and osteoclast recruitment (Rank) with upregulation of IL-6 as proresorptive cytokine. This was associated with further suppression of osteogenic lineage (Runx2, Sparc). To interfere with the development of SBD, zoledronic acid (Zol), a potent inhibitor of osteoclast activity/osteoclastogenesis and promoter of osteogenic lineage, was used in H/R-exposed mice. Zol markedly inhibited osteoclast activity and recruitment, promoting osteogenic lineage. The recurrent H/R stress further worsened bone structure, increased bone turnover, depressed osteoblastogenesis (Runx2, Sparc), and increased both osteoclast activity (RankL, Cathepsin k) and osteoclast recruitment (Rank) in SCD mice compared with either normoxic or single-H/R-episode SCD mice. Zol used before recurrent VOCs prevented bone impairment and promoted osteogenic lineage. Our findings support the view that SBD is related to osteoblast impairment, and increased osteoclast activity resulted from local hypoxia, oxidative stress, and the release of proresorptive cytokine such as IL-6. Zol might act on both the osteoclast and osteoblast compartments as multimodal therapy to prevent SBD.
Collapse
|
37
|
Sudjaritruk T, Puthanakit T. Adverse bone health among children and adolescents growing up with HIV. J Virus Erad 2015; 1:159-67. [PMID: 27482407 PMCID: PMC4946734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Adverse bone health is one of the important non-communicable conditions during the course of life-long HIV treatment. Adolescence is the critical period of bone mineral acquisition for attaining adult peak bone mass. With traditional and HIV-related risk factors, adolescents growing with HIV have a greater chance of having impaired bone mineral density (BMD). Prevalence of low BMD has been reported in 16-32% of HIV-infected adolescents from middle-income countries. The deep interaction between the immune and skeletal systems, called the immunoskeletal interface, is proposed as one of the underlying mechanisms of adverse bone health in HIV-infected individuals. Dual-energy X-ray absorptiometry (DXA) is a standard tool to assess BMD among HIV-infected adolescents. Non-invasive imaging techniques such as quantitative computed tomography (QCT) and quantitative magnetic resonance imaging (QMRI) provide more information on true volumetric density and bone microarchitecture. To date, there are no paediatric recommendations on the treatment and prevention of adverse bone health. Having a healthy lifestyle, routine weight-bearing exercises and adequate dietary intake are the standard approaches to optimise bone health. There are several ongoing randomised clinical trials using pharmacological treatment options, for example vitamin D, calcium and alendronate to improve bone health among this population.
Collapse
Affiliation(s)
- Tavitiya Sudjaritruk
- Department of Epidemiology,
Johns Hopkins Bloomberg School of Public Health,
Baltimore,
Maryland,
USA
- Department of Pediatrics, Faculty of Medicine,
Chiang Mai University,
Chiang Mai,
Thailand
- HIV-NAT,
Thai Red Cross AIDS Research Centre,
Bangkok,
Thailand
| | - Thanyawee Puthanakit
- HIV-NAT,
Thai Red Cross AIDS Research Centre,
Bangkok,
Thailand
- Department of Pediatrics, Faculty of Medicine,
Chulalongkorn University,
Bangkok,
Thailand
| |
Collapse
|
38
|
Sudjaritruk T, Puthanakit T. Adverse bone health among children and adolescents growing up with HIV. J Virus Erad 2015. [DOI: 10.1016/s2055-6640(20)30506-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
|
39
|
Napimoga MH, Demasi APD, Jarry CR, Ortega MC, de Araújo VC, Martinez EF. In vitro evaluation of the biological effect of SOFAT on osteoblasts. Int Immunopharmacol 2015; 26:378-83. [PMID: 25916677 DOI: 10.1016/j.intimp.2015.04.033] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 03/30/2015] [Accepted: 04/14/2015] [Indexed: 01/12/2023]
Abstract
Osteoclastogenesis is regulated by osteoblasts especially through the production of receptor activator of nuclear factor kappa-B ligand (RANKL). Immune cells present in inflamed tissues markedly increase this process by upregulating RANKL directly or by secreting proinflammatory cytokines, which stimulate RANKL expression by osteoblasts. A novel T-cell-secreted cytokine, termed secreted osteoclastogenic factor of activated T cells (SOFAT) was recently described. To better understand how SOFAT affects bone metabolism, we investigated its effect on osteoblastic cells. We demonstrate here that SOFAT did not influence MC3T3 cells viability and proliferation, evaluated by trypan blue exclusion and MTT tests, respectively. SOFAT stimulated the secretion of IL-6, IL-10 and GM-CSF in MC3T3 cells, as shown by the analysis of an inflammatory cytokines ELISA array. The upregulation of the corresponding genes was checked by qPCR. Both RANKL mRNA and protein levels did not significantly change in the presence of SOFAT, evaluated by qPCR and western blotting, respectively. In addition, analysis of a PCR array for IL6/STAT3 pathway demonstrated that SOFAT induced the expression of BCL2, IL1B, IL10, IL22, IL2RA, IL4, IL6, TNFSF10 and PIAS3, while IL2, IL21, CD4, CSF3R and TNF were repressed. Our results confirm that the SOFAT mechanism of action is RANKL-independent and indicate that, by co-opting osteoblasts to increase the production of osteoclastogenic cytokines, SOFAT may exacerbate inflammation and support osteoclast formation and bone destruction.
Collapse
Affiliation(s)
- Marcelo Henrique Napimoga
- Laboratory of Immunology and Molecular Biology, São Leopoldo Mandic Institute and Research Center, Campinas/SP, Brazil.
| | - Ana Paula Dias Demasi
- Laboratory of Oral Pathology, São Leopoldo Mandic Institute and Research Center, Campinas/SP, Brazil
| | - Christian Rado Jarry
- Periodontal Medicine Research Group, Department of Periodontology, São Leopoldo Mandic Institute and Research Center, Campinas/SP, Brazil
| | - Mauricio Cardoso Ortega
- Periodontal Medicine Research Group, Department of Periodontology, São Leopoldo Mandic Institute and Research Center, Campinas/SP, Brazil
| | - Vera Cavalcanti de Araújo
- Laboratory of Oral Pathology, São Leopoldo Mandic Institute and Research Center, Campinas/SP, Brazil
| | | |
Collapse
|
40
|
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.
Collapse
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
| |
Collapse
|
41
|
Abstract
PURPOSE OF REVIEW Low bone mineral density (BMD) is common in those with HIV, associated with higher bone turnover and a higher prevalence of fractures. This review explores low BMD in HIV, focusing on underlying mechanisms and relationships between low BMD and HIV infection, immune dysfunction, and antiretroviral therapy (ART). RECENT FINDINGS Greater reductions in BMD accompanying reductions in HIV viremia at initiation of first-line or second-line ART suggest an important role for immune- or viral-mediated mechanisms in its pathogenesis. SUMMARY As bone metabolism is part-regulated by T cells and B cells, we propose that earlier initiation of ART at higher CD4 T-cell counts may attenuate BMD loss by abrogating immune- and viral-mediated disturbances in bone metabolism that accompany ART initiation. Further pathogenesis-based research is required in this field, focusing on the complex interaction between virus, immune system, ART, and bone metabolism.
Collapse
|
42
|
Šućur A, Katavić V, Kelava T, Jajić Z, Kovačić N, Grčević D. Induction of osteoclast progenitors in inflammatory conditions: key to bone destruction in arthritis. INTERNATIONAL ORTHOPAEDICS 2014; 38:1893-903. [DOI: 10.1007/s00264-014-2386-y] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Accepted: 05/13/2014] [Indexed: 12/14/2022]
|
43
|
Roser-Page S, Vikulina T, Zayzafoon M, Weitzmann MN. CTLA-4Ig-induced T cell anergy promotes Wnt-10b production and bone formation in a mouse model. Arthritis Rheumatol 2014; 66:990-9. [PMID: 24757150 DOI: 10.1002/art.38319] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Accepted: 12/10/2013] [Indexed: 01/08/2023]
Abstract
OBJECTIVE Rheumatoid arthritis (RA) is an inflammatory autoimmune disease characterized by severe joint erosion and systemic osteoporosis. Chronic T cell activation is a hallmark of RA, and agents that target the CD28 receptor on T cells, which is required for T cell activation, are being increasingly used as therapies for RA and other inflammatory diseases. Lymphocytes play complex roles in the regulation of the skeleton, and although activated T cells and B cells secrete cytokines that promote skeletal decline, under physiologic conditions lymphocytes also have key protective roles in the stabilization of skeletal mass. Consequently, disruption of T cell costimulation may have unforeseen consequences for physiologic bone turnover. This study was undertaken to investigate the impact of pharmacologic CD28 T cell costimulation blockade on physiologic bone turnover and structure. METHODS C57BL6 mice were treated with CTLA-4Ig, a pharmacologic CD28 antagonist or with irrelevant control antibody (Ig), and serum biochemical markers of bone turnover were quantified by enzyme-linked immunosorbent assay. Bone mineral density and indices of bone structure were further measured by dual x-ray absorptiometry and micro-computed tomography, respectively, and static and dynamic indices of bone formation were quantified using bone histomorphometry. RESULTS Pharmacologic disruption of CD28 T cell costimulation in mice significantly increased bone mass and enhanced indices of bone structure, a consequence of enhanced bone formation, concurrent with enhanced secretion of the bone anabolic factor Wnt-10b by T cells. CONCLUSION Inhibition of CD28 costimulation by CTLA-4Ig promotes T cell Wnt-10b production and bone formation and may represent a novel anabolic strategy for increasing bone mass in osteoporotic conditions.
Collapse
|
44
|
Juffer P, Jaspers RT, Klein-Nulend J, Bakker AD. Mechanically loaded myotubes affect osteoclast formation. Calcif Tissue Int 2014; 94:319-26. [PMID: 24264813 DOI: 10.1007/s00223-013-9813-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Accepted: 10/24/2013] [Indexed: 01/06/2023]
Abstract
In response to mechanical loading skeletal muscle produces numerous growth factors and cytokines that enter the circulation. We hypothesized that myotubes produce soluble factors that affect osteoclast formation and aimed to identify which osteoclastogenesis-modulating factors are differentially produced by mechanically stimulated myotubes. C2C12 myotubes were subjected to mechanical loading by cyclic strain for 1 h, and postincubated with or without cyclic strain for 24 h. The effect of cyclic strain on gene expression in myotubes was determined by PCR. Conditioned medium (CM) was collected from cultures of unloaded and loaded myotubes and from MLO-Y4 osteocytes. CM was added to mouse bone marrow cells containing osteoclast precursors, and after 6 days osteoclasts were counted. Compared to unconditioned medium, CM from unloaded osteocytes increased osteoclast formation, while CM from unloaded myotubes decreased osteoclast formation. Cyclic strain strongly enhanced IL-6 expression in myotubes. CM from cyclically strained myotubes increased osteoclast formation compared to CM from unloaded myotubes, but this effect did not occur in the presence of an IL-6 antibody. In conclusion, mechanically loaded myotubes secrete soluble factors, among others IL-6, which affect osteoclast formation. These results suggest that muscle could potentially affect bone homeostasis in vivo via production of growth factors and/or cytokines.
Collapse
Affiliation(s)
- Petra Juffer
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), MOVE Research Institute Amsterdam, University of Amsterdam and VU University Amsterdam, Gustav Mahlerlaan 3004, 1081 LA, Amsterdam, The Netherlands
| | | | | | | |
Collapse
|
45
|
Expression of receptor activator of nuclear factor-kappa B ligand in leukocytes during acute kidney rejection after transplantation in rats. Transplant Proc 2014; 45:1766-70. [PMID: 23769040 DOI: 10.1016/j.transproceed.2012.10.065] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2012] [Revised: 09/11/2012] [Accepted: 10/09/2012] [Indexed: 11/23/2022]
Abstract
BACKGROUND Acute cellular rejection of the transplanted kidney is an important cause of impaired graft function. One of the basic characteristics of acute cellular rejection according to the latest Banff classification of renal allograft pathology is the presence of a large number of T lymphocytes in the allografted tissue. Osteoprotegerin, receptor activator of nuclear factor-kappa B (RANK) and RANK ligand (RANKL), three relatively novel members of the tumor necrosis factor superfamily, have crucial roles not only in physiologic and pathologic bone metabolism but also in immunologic processes. The aim of our study was to determine the expression of RANKL and RANK by T lymphocytes and macrophages in acute cellular kidney allograft rejection in rats. METHODS The study included 15 male Wistar rats of 3 months old and 250-300 g as recipients and 15 male DA rats donors of 3 months old; and weight 250-300 g. When animals were sacrificed at 3 weeks to extract the transplanted kidney for pathohistologic analysis and immunoflorescence. all samples showed acute cellular rejection. Kidney sections were examined by dual-labeled immunofluorescence to detect CD4, CD8, or CD68 (red) and RANK or RANKL (green) with coexpressing cells as orange. RESULTS RANKL-positive expression colocalized with CD4(+) and CD8(+) T lymphocytes in acutely rejected kidney tissue. There was no association between CD4(+) and CD8(+) T cells with RANK expression, which was evident by infiltrating CD68-positive macrophages in the kidney tissue interstitium. CONCLUSION RANK and RANKL were expressed by T lymphocytes and macrophages in acute cellular kidney rejection after transplantation in rats.
Collapse
|
46
|
|
47
|
Le Goff B, Berthelot JM, Maugars Y, Heymann D. Osteoclasts in RA: diverse origins and functions. Joint Bone Spine 2013; 80:586-91. [PMID: 23731635 DOI: 10.1016/j.jbspin.2013.04.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/28/2013] [Indexed: 01/01/2023]
Abstract
Osteoclasts were recognized in the late 1990s as the cells responsible for generalized and focal bone loss in rheumatoid arthritis (RA). Concepts about osteoclast biology have changed radically based on recent evidence of considerable diversity in both the origins and the functions of osteoclasts. In addition, the role for osteoclasts is not confined to bone resorption but may also include active contributions to inflammatory and autoimmune responses. Thus, in RA, osteoclast progenitors may arise from both circulating cells and cells developed within the rheumatoid synovium or subchondral bone. Within the inflamed synovium, osteoclasts are activated by factors such as cytokines, immune complexes, or activators of the toll-like receptors, which are not found in healthy bone tissue. Finally, recent data suggest that osteoclasts may be capable of antigen presentation to T cells via major histocompatibility complex class I and class II molecules. Confirmation of this suggestion by future studies would indicate that osteoclasts might be involved not only in bone resorption, but also in autoimmune responses and antigen presentation. These data highlight the considerable complexity of interactions between bone tissue and the immune system. Research into these interactions may identify new targets for treatments against the bone abnormalities associated with chronic inflammatory disease.
Collapse
Affiliation(s)
- Benoit Le Goff
- Service de rhumatologie, Hôtel-Dieu, 1, place Alexis-Ricordeau, 44093 Nantes cedex 1, France; LUNAM université, 44000 Nantes, France; Inserm, UMR957, physiopathologie de la résorption osseuse et thérapie des tumeurs osseuses primitives, 44035 Nantes, France; Université de Nantes, Nantes atlantique universités, 44035 Nantes, France.
| | | | | | | |
Collapse
|
48
|
Jarry CR, Duarte PM, Freitas FF, de Macedo CG, Clemente-Napimoga JT, Saba-Chujfi E, Passador-Santos F, de Araújo VC, Napimoga MH. Secreted osteoclastogenic factor of activated T cells (SOFAT), a novel osteoclast activator, in chronic periodontitis. Hum Immunol 2013; 74:861-6. [PMID: 23619471 DOI: 10.1016/j.humimm.2013.04.013] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Revised: 03/06/2013] [Accepted: 04/12/2013] [Indexed: 11/30/2022]
Abstract
A novel activated human T cell-secreted cytokine, referred as secreted osteoclastogenic factor of activated T cells (SOFAT), that induce osteoclastogenesis in a RANKL-independent manner was recently described. This study evaluated the role of SOFAT in periodontal tissues and periodontitis. Gingival biopsies were harvested from systemically healthy non-periodontitis (n=15) and chronic periodontitis patients (n=15). The mRNA and protein levels of SOFAT were measured by qPCR and by enzyme-linked immunosorbent assay, respectively. Moreover, RAW 264.7 cells were cultured with SOFAT or Receptor activator of nuclear factor-kB ligand (RANKL) and stained for tartrate-resistant acid phosphatase (TRAP). Also, mice received a palatal injection between the first and second upper molar of SOFAT (100 ng/ml) or saline solution (0.9%). The upper jaw was removed, histologically processed and stained with hematoxilin and eosin to observe the presence of osteoclast-like cells. The mRNA and protein levels of SOFAT were significantly higher in the gingival tissue of the periodontitis group when compared to non-periodontitis one (p<0.05). In addition, SOFAT potently induced TRAP-positive multinucleated cell formation by RAW 264.7 cells as well as induced the formation of osteoclast-like cells in the periodontal ligament in mice. The present study demonstrated that SOFAT may play an important role in periodontitis.
Collapse
Affiliation(s)
- Christian Rado Jarry
- Laboratory of Immunology and Molecular Biology, São Leopoldo Mandic Institute and Research Center, Campinas/SP, Brazil
| | | | | | | | | | | | | | | | | |
Collapse
|
49
|
Schafer JJ, Manlangit K, Squires KE. Bone health and human immunodeficiency virus infection. Pharmacotherapy 2013; 33:665-82. [PMID: 23553497 DOI: 10.1002/phar.1257] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Low bone mineral density is common among persons with human immunodeficiency virus (HIV) infection, and studies reporting increased fracture rates in this patient population are emerging. The causes of low bone mineral density, osteoporosis, and fractures in persons with HIV are likely multifactorial, involving traditional risk factors, HIV infection, and exposure to antiretroviral treatment. Specific antiretrovirals such as tenofovir may cause a greater loss of bone mineral density compared with other agents and have recently been linked to an increased risk for fracture. As a result, recent treatment guidelines suggest that clinicians consider avoiding tenofovir as initial therapy in postmenopausal women. Evaluating bone mineral density and vitamin D status in persons with HIV may be important steps in identifying those requiring pharmacotherapy; however, the appropriate timing for bone mineral density and vitamin D screening is uncertain, as is the appropriate method of replacing vitamin D in HIV-positive patients who are deficient. Further study is necessary to definitively determine the approach to evaluating bone health and managing low bone mineral density and vitamin D deficiency in patients with HIV infection.
Collapse
Affiliation(s)
- Jason J Schafer
- Department of Pharmacy Practice, Jefferson School of Pharmacy, Thomas Jefferson University, Philadelphia, Pennsylvania 19107-5233, USA.
| | | | | |
Collapse
|
50
|
Affiliation(s)
- M Neale Weitzmann
- Atlanta Department of Veterans Affairs Medical Center, Decatur, GA, USA.
| |
Collapse
|