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Hu W, Deng J, Su Z, Wang H, Lin S. Advances on T cell immunity in bone remodeling and bone regeneration. Zhejiang Da Xue Xue Bao Yi Xue Ban 2024; 53:450-459. [PMID: 39183057 PMCID: PMC11375490 DOI: 10.3724/zdxbyxb-2023-0619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/27/2024]
Abstract
Bone remodeling and bone regeneration are essential for preserving skeletal integrity and maintaining mineral homeostasis. T cells, as key members of adaptive immunity, play a pivotal role in bone remodeling and bone regeneration by producing a range of cytokines and growth factors. In the physiological state, T cells are involved in the maintenance of bone homeostasis through interactions with mesenchymal stem cells, osteoblasts, and osteoclasts. In pathological states, T cells participate in the pathological process of different types of osteoporosis through interaction with estrogen, glucocorticoids, and parathyroid hormone. During fracture healing for post-injury repair, T cells play different roles during the inflammatory hematoma phase, the bone callus formation phase and the bone remodeling phase. Targeting T cells thus emerges as a potential strategy for regulating bone homeostasis. This article reviews the research progress on related mechanisms of T cells immunity involved in bone remodeling and bone regeneration, with a view to providing a scientific basis for targeting T cells to regulate bone remodeling and bone regeneration.
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Affiliation(s)
- Wenhui Hu
- Orthopedic Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524000, Guangdong Province, China.
| | - Jinxia Deng
- Orthopedic Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524000, Guangdong Province, China
| | - Zhanpeng Su
- Orthopedic Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524000, Guangdong Province, China
| | - Haixing Wang
- Department of Orthopedics and Traumatology, Prince of Wales Hospital, Faculty of Medicine, The Chinese University of Hong Kong, Hongkong 999077, China
| | - Sien Lin
- Orthopedic Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524000, Guangdong Province, China.
- Department of Orthopedics and Traumatology, Prince of Wales Hospital, Faculty of Medicine, The Chinese University of Hong Kong, Hongkong 999077, China.
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2
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Nair AS, Woodford J, Loughland J, Andrew D, Piera K, Amante F, William T, Grigg MJ, McCarthy JS, Anstey NM, Boyle MJ, Barber BE. Osteoprotegerin (OPG) and its ligands RANKL and TRAIL in falciparum, vivax and knowlesi malaria: correlations with disease severity, and B cell production of OPG. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.07.22.24310838. [PMID: 39108527 PMCID: PMC11302609 DOI: 10.1101/2024.07.22.24310838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 08/13/2024]
Abstract
Osteoprotegerin (OPG) is a soluble decoy receptor for receptor activator of NF-ƙB ligand (RANKL) and TNF-related apoptosis-inducing ligand (TRAIL), and is increasingly recognised as a marker of poor prognosis in a number of diseases. Here we demonstrate that in Malaysian adults with falciparum and vivax malaria, OPG is increased, and its ligands TRAIL and RANKL decreased, in proportion to disease severity. In volunteers experimentally infected with P. falciparum and P. vivax, RANKL was suppressed, while TRAIL was unexpectedly increased, suggesting binding of OPG to RANKL prior to TRAIL. We also demonstrate that P. falciparum stimulates B cells to produce OPG in vitro, and that B cell OPG production is increased ex vivo in patients with falciparum, vivax and knowlesi malaria. Our findings provide further evidence of the importance of the OPG/RANKL/TRAIL pathway in pathogenesis of diseases involving systemic inflammation, and may have implications for adjunctive therapies. Further evaluation of the role of B cell production of OPG in host responses to malaria and other inflammatory diseases is warranted.
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Affiliation(s)
| | - John Woodford
- QIMR Berghofer Medical Research Institute, Brisbane, Australia
- Laboratory of Malaria Immunology and Vaccinology, National Institute of Allergy and Infectious Diseases, Bethesda, United States
| | - Jessica Loughland
- QIMR Berghofer Medical Research Institute, Brisbane, Australia
- Burnet Institute, Melbourne, Australia
| | - Dean Andrew
- QIMR Berghofer Medical Research Institute, Brisbane, Australia
| | - Kim Piera
- Menzies School of Health Research, Darwin, Australia
| | - Fiona Amante
- QIMR Berghofer Medical Research Institute, Brisbane, Australia
| | | | | | - James S McCarthy
- QIMR Berghofer Medical Research Institute, Brisbane, Australia
- Peter Doherty Institute for Infection and Immunity, Melbourne, Australia
| | | | - Michelle J Boyle
- QIMR Berghofer Medical Research Institute, Brisbane, Australia
- Burnet Institute, Melbourne, Australia
| | - Bridget E Barber
- QIMR Berghofer Medical Research Institute, Brisbane, Australia
- Menzies School of Health Research, Darwin, Australia
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Molitoris KH, Huang M, Baht GS. Osteoimmunology of Fracture Healing. Curr Osteoporos Rep 2024; 22:330-339. [PMID: 38616228 PMCID: PMC11186872 DOI: 10.1007/s11914-024-00869-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/26/2024] [Indexed: 04/16/2024]
Abstract
PURPOSE OF REVIEW The purpose of this review is to summarize what is known in the literature about the role inflammation plays during bone fracture healing. Bone fracture healing progresses through four distinct yet overlapping phases: formation of the hematoma, development of the cartilaginous callus, development of the bony callus, and finally remodeling of the fracture callus. Throughout this process, inflammation plays a critical role in robust bone fracture healing. RECENT FINDINGS At the onset of injury, vessel and matrix disruption lead to the generation of an inflammatory response: inflammatory cells are recruited to the injury site where they differentiate, activate, and/or polarize to secrete cytokines for the purposes of cell signaling and cell recruitment. This process is altered by age and by sex. Bone fracture healing is heavily influenced by the presence of inflammatory cells and cytokines within the healing tissue.
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Affiliation(s)
- Kristin Happ Molitoris
- Department of Orthopaedic Surgery, Duke Molecular Physiology Institute, Duke University, 300 North Duke Street, Durham, NC, 27701, USA
| | - Mingjian Huang
- Department of Orthopaedic Surgery, Duke Molecular Physiology Institute, Duke University, 300 North Duke Street, Durham, NC, 27701, USA
| | - Gurpreet Singh Baht
- Department of Orthopaedic Surgery, Duke Molecular Physiology Institute, Duke University, 300 North Duke Street, Durham, NC, 27701, USA.
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Hong J, Luo F, Du X, Xian F, Li X. The immune cells in modulating osteoclast formation and bone metabolism. Int Immunopharmacol 2024; 133:112151. [PMID: 38685175 DOI: 10.1016/j.intimp.2024.112151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 04/10/2024] [Accepted: 04/22/2024] [Indexed: 05/02/2024]
Abstract
Osteoclasts are pivotal in regulating bone metabolism, with immune cells significantly influencing both physiological and pathological processes by modulating osteoclast functions. This is particularly evident in conditions of inflammatory bone resorption, such as rheumatoid arthritis and periodontitis. This review summarizes and comprehensively analyzes the research progress on the regulation of osteoclast formation by immune cells, aiming to unveil the underlying mechanisms and pathways through which diseases, such as rheumatoid arthritis and periodontitis, impact bone metabolism.
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Affiliation(s)
- Jiale Hong
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, PR China
| | - Fang Luo
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, PR China
| | - Xingyue Du
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, PR China
| | - Fa Xian
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, PR China
| | - Xinyi Li
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, PR China.
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5
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Li S, Liu G, Hu S. Osteoporosis: interferon-gamma-mediated bone remodeling in osteoimmunology. Front Immunol 2024; 15:1396122. [PMID: 38817601 PMCID: PMC11137183 DOI: 10.3389/fimmu.2024.1396122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Accepted: 04/26/2024] [Indexed: 06/01/2024] Open
Abstract
As the world population ages, osteoporosis, the most common disease of bone metabolism, affects more than 200 million people worldwide. The etiology is an imbalance in bone remodeling process resulting in more significant bone resorption than bone remodeling. With the advent of the osteoimmunology field, the immune system's role in skeletal pathologies is gradually being discovered. The cytokine interferon-gamma (IFN-γ), a member of the interferon family, is an important factor in the etiology and treatment of osteoporosis because it mediates bone remodeling. This review starts with bone remodeling process and includes the cellular and key signaling pathways of bone remodeling. The effects of IFN-γ on osteoblasts, osteoclasts, and bone mass are discussed separately, while the overall effects of IFN-γ on primary and secondary osteoporosis are summarized. The net effect of IFN-γ on bone appears to be highly dependent on the environment, dose, concentration, and stage of cellular differentiation. This review focuses on the mechanisms of bone remodeling and bone immunology, with a comprehensive discussion of the relationship between IFN-γ and osteoporosis. Finding the paradoxical balance of IFN-γ in bone immunology and exploring the potential of its clinical application provide new ideas for the clinical treatment of osteoporosis and drug development.
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Affiliation(s)
- Siying Li
- The Orthopaedic Center, The First People’s Hospital of Wenling, Taizhou University Affiliated Wenling Hospital, Wenling, Zhejiang, China
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, Hunan, China
| | - Gang Liu
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, Hunan, China
| | - Siwang Hu
- The Orthopaedic Center, The First People’s Hospital of Wenling, Taizhou University Affiliated Wenling Hospital, Wenling, Zhejiang, China
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Wang C, Zhu Y, Pan D. Identifying the causal relationship between immune factors and osteonecrosis: a two-sample Mendelian randomization study. Sci Rep 2024; 14:9371. [PMID: 38654114 DOI: 10.1038/s41598-024-59810-0] [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: 12/15/2023] [Accepted: 04/15/2024] [Indexed: 04/25/2024] Open
Abstract
A wealth of evidence intimates a profound connection between the immune system and osteonecrosis, albeit the specific immune factors underlying this connection remain largely veiled. A bidirectional Mendelian randomization (MR) study was conducted based on genome-wide association study summary data to identify causal links between 731 immune factors and osteonecrosis including drug-induced osteonecrosis. Preliminary MR analysis was accomplished utilizing the inverse-variance weighted method under a multiplicative random effects model, and heterogeneity and potential horizontal pleiotropy were evaluated through Cochrane's Q-test, MR-Egger intercept test, MR-PRESSO global test, and leave-one-out analysis. Upon false discovery rate correction, the gene-predicted level of one immune factor (CD62L - monocyte %monocyte) exhibited a significant positive correlation with osteonecrosis, while eight immune traits associated with monocytes, dendritic cells, and NK cells demonstrated significant causal effects with drug-induced osteonecrosis. Reverse MR revealed no significant correlations. This MR research provides genetic evidence for the causal associations between a broad spectrum of immune factors and osteonecrosis. Such a study aids in unraveling the intricate interaction patterns between the immune and skeletal systems, elucidating the pathogenesis of osteonecrosis, and identifying potential novel therapeutic approaches.
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Affiliation(s)
- Chao Wang
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | - Yong Zhu
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | - Ding Pan
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China.
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7
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Pereira MVA, Galvani RG, Gonçalves-Silva T, de Vasconcelo ZFM, Bonomo A. Tissue adaptation of CD4 T lymphocytes in homeostasis and cancer. Front Immunol 2024; 15:1379376. [PMID: 38690280 PMCID: PMC11058666 DOI: 10.3389/fimmu.2024.1379376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 04/01/2024] [Indexed: 05/02/2024] Open
Abstract
The immune system is traditionally classified as a defense system that can discriminate between self and non-self or dangerous and non-dangerous situations, unleashing a tolerogenic reaction or immune response. These activities are mainly coordinated by the interaction between innate and adaptive cells that act together to eliminate harmful stimuli and keep tissue healthy. However, healthy tissue is not always the end point of an immune response. Much evidence has been accumulated over the years, showing that the immune system has complex, diversified, and integrated functions that converge to maintaining tissue homeostasis, even in the absence of aggression, interacting with the tissue cells and allowing the functional maintenance of that tissue. One of the main cells known for their function in helping the immune response through the production of cytokines is CD4+ T lymphocytes. The cytokines produced by the different subtypes act not only on immune cells but also on tissue cells. Considering that tissues have specific mediators in their architecture, it is plausible that the presence and frequency of CD4+ T lymphocytes of specific subtypes (Th1, Th2, Th17, and others) maintain tissue homeostasis. In situations where homeostasis is disrupted, such as infections, allergies, inflammatory processes, and cancer, local CD4+ T lymphocytes respond to this disruption and, as in the healthy tissue, towards the equilibrium of tissue dynamics. CD4+ T lymphocytes can be manipulated by tumor cells to promote tumor development and metastasis, making them a prognostic factor in various types of cancer. Therefore, understanding the function of tissue-specific CD4+ T lymphocytes is essential in developing new strategies for treating tissue-specific diseases, as occurs in cancer. In this context, this article reviews the evidence for this hypothesis regarding the phenotypes and functions of CD4+ T lymphocytes and compares their contribution to maintaining tissue homeostasis in different organs in a steady state and during tumor progression.
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Affiliation(s)
- Marina V. A. Pereira
- Laboratory on Thymus Research, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
- Laboratory of High Complexity, Fernandes Figueira National Institute for The Health of Mother, Child, and Adolescent, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Rômulo G. Galvani
- Laboratory on Thymus Research, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Triciana Gonçalves-Silva
- National Center for Structural Biology and Bioimaging - CENABIO, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Zilton Farias Meira de Vasconcelo
- Laboratory of High Complexity, Fernandes Figueira National Institute for The Health of Mother, Child, and Adolescent, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Adriana Bonomo
- Laboratory on Thymus Research, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
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8
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Zhao Z, Du Y, Yan K, Zhang L, Guo Q. Exercise and osteoimmunology in bone remodeling. FASEB J 2024; 38:e23554. [PMID: 38588175 DOI: 10.1096/fj.202301508rrr] [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: 07/25/2023] [Revised: 02/20/2024] [Accepted: 02/28/2024] [Indexed: 04/10/2024]
Abstract
Bones can form the scaffolding of the body, support the organism, coordinate somatic movements, and control mineral homeostasis and hematopoiesis. The immune system plays immune supervisory, defensive, and regulatory roles in the organism, which mainly consists of immune organs (spleen, bone marrow, tonsils, lymph nodes, etc.), immune cells (granulocytes, platelets, lymphocytes, etc.), and immune molecules (immune factors, interferons, interleukins, tumor necrosis factors, etc.). Bone and the immune system have long been considered two distinct fields of study, and the bone marrow, as a shared microenvironment between the bone and the immune system, closely links the two. Osteoimmunology organically combines bone and the immune system, elucidates the role of the immune system in bone, and creatively emphasizes its interdisciplinary characteristics and the function of immune cells and factors in maintaining bone homeostasis, providing new perspectives for skeletal-related field research. In recent years, bone immunology has gradually become a hot spot in the study of bone-related diseases. As a new branch of immunology, bone immunology emphasizes that the immune system can directly or indirectly affect bones through the RANKL/RANK/OPG signaling pathway, IL family, TNF-α, TGF-β, and IFN-γ. These effects are of great significance for understanding inflammatory bone loss caused by various autoimmune or infectious diseases. In addition, as an external environment that plays an important role in immunity and bone, this study pays attention to the role of exercise-mediated bone immunity in bone reconstruction.
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Affiliation(s)
- Zhonghan Zhao
- School of Exercise and Health, Shanghai University of Sport, Shanghai, China
| | - Yuxiang Du
- School of Exercise and Health, Shanghai University of Sport, Shanghai, China
| | - Kai Yan
- School of Exercise and Health, Shanghai University of Sport, Shanghai, China
| | - Lingli Zhang
- College of Athletic Performance, Shanghai University of Sport, Shanghai, China
| | - Qiang Guo
- Department of Orthopaedics, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
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9
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Salimi M, Khanzadeh M, Nabipoorashrafi SA, Seyedi SA, Yaghoobpoor S, Brismée JM, Lucke-Wold B, Ebadi M, Ghaedi A, Kumar VS, Mirghaderi P, Rabie H, Khanzadeh S. Association of neutrophil to lymphocyte ratio with bone mineral density in post-menopausal women: a systematic review and meta-analysis. BMC Womens Health 2024; 24:169. [PMID: 38461235 PMCID: PMC10924380 DOI: 10.1186/s12905-024-03006-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 02/28/2024] [Indexed: 03/11/2024] Open
Abstract
BACKGROUND We conducted a systematic review and meta-analysis to compare the neutrophil lymphocyte ratio (NLR) levels between women with post-menopausal osteopenia or osteoporosis to those with normal bone mineral density (BMD). METHODS We used Web of Science, PubMed, and Scopus to conduct a systematic search for relevant publications published before June 19, 2022, only in English language. We reported standardized mean difference (SMD) with a 95% confidence interval (CI). Because a significant level of heterogeneity was found, we used the random-effects model to calculate pooled effects. We used the Newcastle-Ottawa scale for quality assessment. RESULTS Overall, eight articles were included in the analysis. Post-menopausal women with osteoporosis had elevated levels of NLR compared to those without osteoporosis (SMD = 1.03, 95% CI = 0.18 to 1.88, p = 0.017, I2 = 98%). In addition, there was no difference between post-menopausal women with osteopenia and those without osteopenia in neutrophil lymphocyte ratio (NLR) levels (SMD = 0.58, 95% CI=-0.08 to 1.25, p = 0.085, I2 = 96.8%). However, there was no difference between post-menopausal women with osteoporosis and those with osteopenia in NLR levels (SMD = 0.75, 95% CI=-0.01 to 1.51, p = 0.05, I2 = 97.5%, random-effect model). CONCLUSION The results of this study point to NLR as a potential biomarker that may be easily introduced into clinical settings to help predict and prevent post-menopausal osteoporosis.
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Affiliation(s)
- Maryam Salimi
- Bone and Joint Diseases Research Center, Department of Orthopedic Surgery, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Monireh Khanzadeh
- Geriatric & Gerontology Department, Medical School, Tehran University of medical and health sciences, Tehran, Iran
| | - Seyed Ali Nabipoorashrafi
- Endocrinology and Metabolism Research Center (EMRC), School of Medicine, Vali-Asr Hospital, Tehran, Iran
| | - Seyed Arsalan Seyedi
- Endocrinology and Metabolism Research Center (EMRC), School of Medicine, Vali-Asr Hospital, Tehran, Iran
| | - Shirin Yaghoobpoor
- Student Research Committee, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Jean-Michel Brismée
- Center for Rehabilitation Research, Department of Rehabilitation Sciences, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | | | - Mehrnoosh Ebadi
- Faculty of Medicine, Arak University of Medical Sciences, Arak, Iran
| | - Arshin Ghaedi
- Student Research Committee, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Varun Singh Kumar
- Department of Orthopaedic Surgery, Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Peyman Mirghaderi
- Students' Scientific Research Center (SSRC), Tehran University of Medical Sciences, Tehran, Iran
| | - Hamid Rabie
- Department of Orthopedic Surgery, Tehran University of Medical Sciences, Tehran, Iran
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Seal A, Hughes M, Wei F, Pugazhendhi AS, Ngo C, Ruiz J, Schwartzman JD, Coathup MJ. Sphingolipid-Induced Bone Regulation and Its Emerging Role in Dysfunction Due to Disease and Infection. Int J Mol Sci 2024; 25:3024. [PMID: 38474268 DOI: 10.3390/ijms25053024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 03/02/2024] [Accepted: 03/04/2024] [Indexed: 03/14/2024] Open
Abstract
The human skeleton is a metabolically active system that is constantly regenerating via the tightly regulated and highly coordinated processes of bone resorption and formation. Emerging evidence reveals fascinating new insights into the role of sphingolipids, including sphingomyelin, sphingosine, ceramide, and sphingosine-1-phosphate, in bone homeostasis. Sphingolipids are a major class of highly bioactive lipids able to activate distinct protein targets including, lipases, phosphatases, and kinases, thereby conferring distinct cellular functions beyond energy metabolism. Lipids are known to contribute to the progression of chronic inflammation, and notably, an increase in bone marrow adiposity parallel to elevated bone loss is observed in most pathological bone conditions, including aging, rheumatoid arthritis, osteoarthritis, and osteomyelitis. Of the numerous classes of lipids that form, sphingolipids are considered among the most deleterious. This review highlights the important primary role of sphingolipids in bone homeostasis and how dysregulation of these bioactive metabolites appears central to many chronic bone-related diseases. Further, their contribution to the invasion, virulence, and colonization of both viral and bacterial host cell infections is also discussed. Many unmet clinical needs remain, and data to date suggest the future use of sphingolipid-targeted therapy to regulate bone dysfunction due to a variety of diseases or infection are highly promising. However, deciphering the biochemical and molecular mechanisms of this diverse and extremely complex sphingolipidome, both in terms of bone health and disease, is considered the next frontier in the field.
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Affiliation(s)
- Anouska Seal
- Biionix Cluster, University of Central Florida, Orlando, FL 32827, USA
| | - Megan Hughes
- School of Biosciences, Cardiff University, Cardiff CF10 3AT, UK
| | - Fei Wei
- Biionix Cluster, University of Central Florida, Orlando, FL 32827, USA
- College of Medicine, University of Central Florida, Orlando, FL 32827, USA
| | - Abinaya S Pugazhendhi
- Biionix Cluster, University of Central Florida, Orlando, FL 32827, USA
- College of Medicine, University of Central Florida, Orlando, FL 32827, USA
| | - Christopher Ngo
- Biionix Cluster, University of Central Florida, Orlando, FL 32827, USA
- College of Medicine, University of Central Florida, Orlando, FL 32827, USA
| | - Jonathan Ruiz
- College of Medicine, University of Central Florida, Orlando, FL 32827, USA
| | | | - Melanie J Coathup
- Biionix Cluster, University of Central Florida, Orlando, FL 32827, USA
- College of Medicine, University of Central Florida, Orlando, FL 32827, USA
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11
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Jing Z, Yuan W, Wang J, Ni R, Qin Y, Mao Z, Wei F, Song C, Zheng Y, Cai H, Liu Z. Simvastatin/hydrogel-loaded 3D-printed titanium alloy scaffolds suppress osteosarcoma via TF/NOX2-associated ferroptosis while repairing bone defects. Bioact Mater 2024; 33:223-241. [PMID: 38045570 PMCID: PMC10689208 DOI: 10.1016/j.bioactmat.2023.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 10/18/2023] [Accepted: 11/02/2023] [Indexed: 12/05/2023] Open
Abstract
Postoperative anatomical reconstruction and prevention of local recurrence after tumor resection are two vital clinical challenges in osteosarcoma treatment. A three-dimensional (3D)-printed porous Ti6Al4V scaffold (3DTi) is an ideal material for reconstructing critical bone defects with numerous advantages over traditional implants, including a lower elasticity modulus, stronger bone-implant interlock, and larger drug-loading space. Simvastatin is a multitarget drug with anti-tumor and osteogenic potential; however, its efficiency is unsatisfactory when delivered systematically. Here, simvastatin was loaded into a 3DTi using a thermosensitive poly (lactic-co-glycolic) acid (PLGA)-polyethylene glycol (PEG)-PLGA hydrogel as a carrier to exert anti-osteosarcoma and osteogenic effects. Newly constructed simvastatin/hydrogel-loaded 3DTi (Sim-3DTi) was comprehensively appraised, and its newfound anti-osteosarcoma mechanism was explained. Specifically, in a bone defect model of rabbit condyles, Sim-3DTi exhibited enhanced osteogenesis, bone in-growth, and osseointegration compared with 3DTi alone, with greater bone morphogenetic protein 2 expression. In our nude mice model, simvastatin loading reduced tumor volume by 59%-77 % without organic damage, implying good anti-osteosarcoma activity and biosafety. Furthermore, Sim-3DTi induced ferroptosis by upregulating transferrin and nicotinamide adenine dinucleotide phosphate oxidase 2 levels in osteosarcoma both in vivo and in vitro. Sim-3DTi is a promising osteogenic bone substitute for osteosarcoma-related bone defects, with a ferroptosis-mediated anti-osteosarcoma effect.
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Affiliation(s)
- Zehao Jing
- Department of Orthopedics, Peking University Third Hospital, Beijing, 100191, People's Republic of China
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing, 100191, People's Republic of China
- Beijing Key Laboratory of Spinal Disease Research, Beijing, 100191, People's Republic of China
| | - Wanqiong Yuan
- Department of Orthopedics, Peking University Third Hospital, Beijing, 100191, People's Republic of China
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing, 100191, People's Republic of China
- Beijing Key Laboratory of Spinal Disease Research, Beijing, 100191, People's Republic of China
| | - Jiedong Wang
- Department of Orthopedics, Peking University Third Hospital, Beijing, 100191, People's Republic of China
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing, 100191, People's Republic of China
- Beijing Key Laboratory of Spinal Disease Research, Beijing, 100191, People's Republic of China
| | - Renhua Ni
- Department of Orthopedics, Peking University Third Hospital, Beijing, 100191, People's Republic of China
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing, 100191, People's Republic of China
- Beijing Key Laboratory of Spinal Disease Research, Beijing, 100191, People's Republic of China
| | - Yu Qin
- School of Materials Science and Engineering, Peking University, Beijing, 100871, People's Republic of China
| | - Zhinan Mao
- School of Materials Science and Engineering, Peking University, Beijing, 100871, People's Republic of China
| | - Feng Wei
- Department of Orthopedics, Peking University Third Hospital, Beijing, 100191, People's Republic of China
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing, 100191, People's Republic of China
- Beijing Key Laboratory of Spinal Disease Research, Beijing, 100191, People's Republic of China
| | - Chunli Song
- Department of Orthopedics, Peking University Third Hospital, Beijing, 100191, People's Republic of China
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing, 100191, People's Republic of China
| | - Yufeng Zheng
- School of Materials Science and Engineering, Peking University, Beijing, 100871, People's Republic of China
| | - Hong Cai
- Department of Orthopedics, Peking University Third Hospital, Beijing, 100191, People's Republic of China
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing, 100191, People's Republic of China
| | - Zhongjun Liu
- Department of Orthopedics, Peking University Third Hospital, Beijing, 100191, People's Republic of China
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing, 100191, People's Republic of China
- Beijing Key Laboratory of Spinal Disease Research, Beijing, 100191, People's Republic of China
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12
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Huang W, Tian J, He J. Risk factors of primary Sjögren 's syndrome combined with osteoporosis. ZHONG NAN DA XUE XUE BAO. YI XUE BAN = JOURNAL OF CENTRAL SOUTH UNIVERSITY. MEDICAL SCIENCES 2024; 49:312-318. [PMID: 38755728 PMCID: PMC11103060 DOI: 10.11817/j.issn.1672-7347.2024.230295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Indexed: 05/18/2024]
Abstract
Primary Sjögren's syndrome (pSS) is a systemic autoimmune disease that is prevalent in middle-aged and elderly women, characterized by dry mouth, dry eyes, fatigue, and joint pain. Nearly one-third pSS patients have been suffering with osteoporosis (OP), displaying symptoms of lumbago, back pain, and even fracture, all of which severely affect their life quality. Common risk factors for pSS and OP include gender and age, persistent state of inflammation, immune disorders, intestinal flora imbalance, vitamin D deficiency, dyslipidemia and sarcopenia. Meanwhile, the comorbidities of pSS, such as renal tubular acidosis, primary biliary cholangitis, autoimmune thyroid diseases, and drugs (glucocorticoids, methotrexate, and cyclophosphamide) are unique risk factors for pSS complicated with OP. Education, guidance of healthy lifestyle, and OP screening are recommended for bone management of pSS patients. Early detection and intervention are crucial for keeping bone health and life quality in pSS patients.
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Affiliation(s)
- Wuxinrui Huang
- Department of Rheumatology and Immunology, Second Xiangya Hospital, Central South University, Changsha 410011.
| | - Jing Tian
- Department of Rheumatology and Immunology, Second Xiangya Hospital, Central South University, Changsha 410011
| | - Jieyu He
- Department of Geriatrics, Second Xiangya Hospital, Central South University, Changsha 410011, China.
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13
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Yang M, Zhu L. Osteoimmunology: The Crosstalk between T Cells, B Cells, and Osteoclasts in Rheumatoid Arthritis. Int J Mol Sci 2024; 25:2688. [PMID: 38473934 DOI: 10.3390/ijms25052688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 02/22/2024] [Accepted: 02/24/2024] [Indexed: 03/14/2024] Open
Abstract
Rheumatoid arthritis (RA) is an ongoing inflammatory condition that affects the joints and can lead to severe damage to cartilage and bones, resulting in significant disability. This condition occurs when the immune system becomes overactive, causing osteoclasts, cells responsible for breaking down bone, to become more active than necessary, leading to bone breakdown. RA disrupts the equilibrium between osteoclasts and osteoblasts, resulting in serious complications such as localized bone erosion, weakened bones surrounding the joints, and even widespread osteoporosis. Antibodies against the receptor activator of nuclear factor-κB ligand (RANKL), a crucial stimulator of osteoclast differentiation, have shown great effectiveness both in laboratory settings and actual patient cases. Researchers are increasingly focusing on osteoclasts as significant contributors to bone erosion in RA. Given that RA involves an overactive immune system, T cells and B cells play a pivotal role by intensifying the immune response. The imbalance between Th17 cells and Treg cells, premature aging of T cells, and excessive production of antibodies by B cells not only exacerbate inflammation but also accelerate bone destruction. Understanding the connection between the immune system and osteoclasts is crucial for comprehending the impact of RA on bone health. By delving into the immune mechanisms that lead to joint damage, exploring the interactions between the immune system and osteoclasts, and investigating new biomarkers for RA, we can significantly improve early diagnosis, treatment, and prognosis of this condition.
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Affiliation(s)
- Mei Yang
- Department of Pharmacology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, Beijing 100005, China
- Medical Epigenetics Research Center, Chinese Academy of Medical Sciences, Beijing 100005, China
| | - Lei Zhu
- Department of Pharmacology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, Beijing 100005, China
- Medical Epigenetics Research Center, Chinese Academy of Medical Sciences, Beijing 100005, China
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14
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Insua A, Galindo-Moreno P, Miron RJ, Wang HL, Monje A. Emerging factors affecting peri-implant bone metabolism. Periodontol 2000 2024; 94:27-78. [PMID: 37904311 DOI: 10.1111/prd.12532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 08/05/2023] [Accepted: 09/10/2023] [Indexed: 11/01/2023]
Abstract
Implant dentistry has evolved to the point that standard implant osseointegration is predictable. This is attributed in part to the advancements in material sciences that have led toward improvements in implant surface technology and characteristics. Nonetheless, there remain several cases where implant therapy fails (specifically at early time points), most commonly attributed to factors affecting bone metabolism. Among these patients, smokers are known to have impaired bone metabolism and thus be subject to higher risks of early implant failure and/or late complications related to the stability of the peri-implant bone and mucosal tissues. Notably, however, emerging data have unveiled other critical factors affecting osseointegration, namely, those related to the metabolism of bone tissues. The aim of this review is to shed light on the effects of implant-related factors, like implant surface or titanium particle release; surgical-related factors, like osseodensification or implanted biomaterials; various drugs, like selective serotonin reuptake inhibitors, proton pump inhibitors, anti-hypertensives, nonsteroidal anti-inflammatory medication, and statins, and host-related factors, like smoking, diet, and metabolic syndrome on bone metabolism, and aseptic peri-implant bone loss. Despite the infectious nature of peri-implant biological complications, these factors must be surveyed for the effective prevention and management of peri-implantitis.
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Affiliation(s)
- Angel Insua
- Department of Periodontology and Oral Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Pablo Galindo-Moreno
- Department of Periodontology and Oral Medicine, University of Michigan, Ann Arbor, Michigan, USA
- Department of Oral Surgery and Implant Dentistry, University of Granada, Granada, Spain
| | - Richard J Miron
- Department of Periodontology, University of Bern, Bern, Switzerland
| | - Hom-Lay Wang
- Department of Periodontology and Oral Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Alberto Monje
- Department of Periodontology and Oral Medicine, University of Michigan, Ann Arbor, Michigan, USA
- Department of Periodontology, University of Bern, Bern, Switzerland
- Department of Periodontology, Universitat Internacional de Catalunya, Barcelona, Spain
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15
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Peng C, Yang Q, Kong X, Sun Z, Wang L, Xiao L. Association of lymphocyte subsets and cytokines with bone metabolism: a retrospective, cross-sectional study. BMC Musculoskelet Disord 2024; 25:43. [PMID: 38195444 PMCID: PMC10775480 DOI: 10.1186/s12891-023-07137-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 12/20/2023] [Indexed: 01/11/2024] Open
Abstract
BACKGROUND Previous research has shown that lymphocytes and cytokines can mediate bone metabolism. This study explored the clinical association and predictive ability of lymphocytes and cytokines levels for bone metabolism. METHODS A total of 162 patients were enrolled in this study. The levels of N-terminal propeptide of type I procollagen (P1NP), β-collagen degradation product (β-CTX), total T lymphocytes, immature T lymphocytes, suppressor/cytotoxic T lymphocytes, helper/inducer T lymphocytes, B lymphocytes, natural killer (NK) cells, Interferon-gamma (IFN-γ), tumour necrosis factor-alpha (TNF-α), IFN-α, interleukin-1 beta (IL-1β), IL-2, IL-4, IL-5, IL-6, IL-8, IL-10, and IL12p70 were evaluated. The relationship between these lymphocyte subsets and cytokines with bone metabolic status was examined and their predictive ability for bone metabolic status was assessed. RESULTS The principal component analysis (PCA) and correlation analysis results varied on differences in lymphocyte subsets and cytokines in various bone metabolism states. Differential analysis revealed significant differences in the absolute counts of B lymphocytes (P < 0.05), level of IL-12p70 (P < 0.05), and IL-8 (P < 0.001) at different P1NP levels. Significant differences were observed in the absolute counts of total T lymphocytes (P < 0.05), B lymphocytes (P < 0.05), the level of IL-6 (P < 0.05), the percentage of B lymphocytes (P < 0.01), and NK cells (P < 0.05) at different β-CTX levels. Furthermore, the receiver operating characteristic (ROC) curve showed that the absolute count of B lymphocytes and levels of IL-12p70 and IL-8 could be used to evaluate bone formation states, while the absolute counts of T and B lymphocytes, level of IL-6, and percentages of NK cells and B lymphocytes could be used to evaluate bone resorption states. CONCLUSION The bone metabolism status changed based on the lymphocyte subsets and cytokine levels. Differentially expressed lymphocytes and cytokines could be used to distinguish bone metabolism status.
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Affiliation(s)
- Cong Peng
- Institute of Respiratory and Critical Medicine/Beijing Key Laboratory of OTIR, the Eighth Medical Center of PLA General Hospital, 17# Heishanhu Road, Haidian District, Beijing, 100091, China
- Hebei North University, Zhangjiakou, 075000, Hebei, China
| | - Qiao Yang
- Department of General Medicine and Geriatrics, Chongqing Emergency Medical Center, Chongqing University Central Hospital, Chongqing, 400010, China
| | - Xiangrui Kong
- Institute of Respiratory and Critical Medicine/Beijing Key Laboratory of OTIR, the Eighth Medical Center of PLA General Hospital, 17# Heishanhu Road, Haidian District, Beijing, 100091, China
| | - Zhengzhong Sun
- Hebei North University, Zhangjiakou, 075000, Hebei, China
| | - Liang Wang
- Department of Geriatrics, the Eighth Medical Center of PLA General Hospital, 17# Heishanhu Road, Haidian District, Beijing, 100091, China.
| | - Li Xiao
- Institute of Respiratory and Critical Medicine/Beijing Key Laboratory of OTIR, the Eighth Medical Center of PLA General Hospital, 17# Heishanhu Road, Haidian District, Beijing, 100091, China.
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16
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Monteiro AC, de Andrade Garcia D, Du Rocher B, Fontão APGA, Nogueira LP, Fidalgo G, Colaço MV, Bonomo A. Cooperation between T and B cells reinforce the establishment of bone metastases in a mouse model of breast cancer. Bone 2024; 178:116932. [PMID: 37832903 DOI: 10.1016/j.bone.2023.116932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 09/21/2023] [Accepted: 10/10/2023] [Indexed: 10/15/2023]
Abstract
Immune cells educated by the primary breast tumor and their secreted factors support the formation of bone pre-metastatic niche. Indeed, we showed that RANKL+ CD3+ T cells, specific for the 4T1 mammary carcinoma cell line, arrive at the bone marrow before metastatic cells and set the pre-metastatic niche. In the absence of RANKL expressed by T cells, there is no pre-metastatic osteolytic disease and bone metastases are completely blocked. Adding to the role of T cells, we have recently demonstrated that dendritic cells assist RANKL+ T cell activities at bone pre-metastatic niche, by differentiating into potent bone resorbing osteoclast-like cells, keeping their antigen-presenting cell properties, providing a positive feedback loop to the osteolytic profile. Here we are showing that bone marrow-derived CD19+ B cells, from 4T1 tumor-bearing mice, also express the pro-osteoclastogenic cytokine receptor activator of NFκB ligand (RANKL). Analysis of trabecular bone mineral density by conventional histomorphometry and X-ray microtomography (micro-CT) demonstrated that B cells expressing RANKL cooperate with 4T1-primed CD3+ T cells to induce bone loss. Moreover, RANKL expression by B cells depends on T cells activity, since experiments performed with B cells derived from 4T1 tumor-bearing nude BALB/c mice resulted in the maintenance of trabecular bone mass instead of bone loss. Altogether, we believe that 4T1-primed RANKL+ B cells alone are not central mediators of bone loss in vivo but when associated with T cells induce a strong decrease in bone mass, accelerating both breast cancer progression and bone metastases establishment. Although several studies performed in different pathological settings, showed that B cells, positively and negatively impact on osteoclastogenesis, due to their capacity to secret pro or anti-osteoclastogenic cytokines, as far as we know, this is the first report showing the role of RANKL expression by B cells on breast cancer-derived bone metastases scenario.
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Affiliation(s)
- Ana Carolina Monteiro
- Laboratory of Osteo and Tumor Immunology, Department of Immunobiology, Fluminense Federal University, Rio de Janeiro, Brazil; Laboratory on Thymus Research, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil.
| | - Diego de Andrade Garcia
- Laboratory of Osteo and Tumor Immunology, Department of Immunobiology, Fluminense Federal University, Rio de Janeiro, Brazil; Laboratory on Thymus Research, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Barbara Du Rocher
- Laboratory on Thymus Research, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | | | | | - Gabriel Fidalgo
- Laboratory of Applied Physics to Biomedical and Environmental Sciences, Physics Institute, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marcos Vinicius Colaço
- Laboratory of Applied Physics to Biomedical and Environmental Sciences, Physics Institute, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Adriana Bonomo
- Laboratory on Thymus Research, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil; National Institute of Science and Technology on Neuroimmunomodulation (INCT-NIM), Brazil; Research Network on Neuroinflammation (RENEURIN), Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
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17
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Zhao J, Dou Y, Liang G, Huang H, Hong K, Yang W, Zhou G, Sha B, Liu J, Zeng L. Global Publication Trends and Research Hotspots of the Immune System and Osteoporosis: A Bibliometric and Visualization Analysis from 2012 to 2022. Endocr Metab Immune Disord Drug Targets 2024; 24:455-467. [PMID: 37881072 DOI: 10.2174/0118715303257269231011073100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 08/10/2023] [Accepted: 09/15/2023] [Indexed: 10/27/2023]
Abstract
BACKGROUND Osteoporosis (OP) is a systemic bone metabolism disorder in which the immune system and bone metabolism interact. OBJECTIVE The purpose of this study was to explore the research status, hot spots and trends regarding the influence of the immune system on OP and to provide a basis for research directions and applications in this field. METHODS We searched and collected literature about the immune system and OP published from 2012 to 2022 in the Web of Science Core Collection database. All the included studies were subjected to bibliometrics analysis using Hiplot Pro, VOSviewer and CiteSpace software to produce statistics and visual analyses of the literature output, countries, institutions, authors, keywords and journals. RESULTS A total of 1201 papers were included, and the number of citations of these articles reached 31,776. The number of publications and citations on the immune system and OP has increased year by year. The top three countries with the greatest number of papers published were China, the United States of America (USA) and Italy. The two institutions with the largest number of papers published were Sichuan University and Soochow University, both located in China. De Martinis Massimo (Italy) and Ginaldi Lia (Italy) are prolific authors in this field. The representative academic journals are Osteoporosis International, Frontiers in Immunology, Journal of Bone and Mineral Research, PloS One and Bone. The results of the keyword cooccurrence analysis showed that the research topics in this field mainly focused on T cells, cytokines, signaling pathways, vitamin D, postmenopausal OP and immune diseases. The keyword burst results showed that zoledronic acid, chain fatty acids and gut microbiota are the frontiers and trends of future research on this topic. CONCLUSION The influence of the immune system on OP has been widely studied, and the current research in this field focuses on the effect or mechanism of immune-related cytokines, signaling pathways and vitamin D on OP. Future research trends in this field should focus on the immune regulation mechanism and clinical transformation of zoledronic acid, chain fatty acids and the gut microbiota in OP.
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Affiliation(s)
- Jinlong Zhao
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, 510120, China
- The Research Team on Bone and Joint Degeneration and Injury of Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, 510120, China
| | - Yaoxing Dou
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, 510120, China
- The Research Team on Bone and Joint Degeneration and Injury of Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, 510120, China
| | - Guihong Liang
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, 510120, China
- The Research Team on Bone and Joint Degeneration and Injury of Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, 510120, China
| | - Hetao Huang
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, 510120, China
| | - Kunhao Hong
- The Fifth Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
- Guangdong Second Chinese Medicine Hospital (Guangdong Province Engineering Technology Research Institute of Traditional Chinese Medicine), Guangzhou, 510095, China
| | - Weiyi Yang
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, 510120, China
| | - Guanghui Zhou
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Bangxin Sha
- The Fifth Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Jun Liu
- The Research Team on Bone and Joint Degeneration and Injury of Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, 510120, China
- The Fifth Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
- Guangdong Second Chinese Medicine Hospital (Guangdong Province Engineering Technology Research Institute of Traditional Chinese Medicine), Guangzhou, 510095, China
| | - Lingfeng Zeng
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, 510120, China
- The Research Team on Bone and Joint Degeneration and Injury of Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, 510120, China
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de Melo DB, Pereira RMR, Sini B, Levy D, Takayama L, Kokron CM, Berselli Marinho AK, Grecco O, Filho JEK, Barros MT. Bone Mineral Density is Related to CD4 + T Cell Counts and Muscle Mass is Associated with B Cells in Common Variable Immunodeficiency Patients. Endocr Metab Immune Disord Drug Targets 2024; 24:242-254. [PMID: 37608677 DOI: 10.2174/1871530323666230822100031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 06/11/2023] [Accepted: 07/12/2023] [Indexed: 08/24/2023]
Abstract
BACKGROUND Common variable immunodeficiency (CVID) is a primary immunodeficiency characterized by chronic/recurrent respiratory infections, bronchiectasis, autoimmunity, inflammatory, gastrointestinal diseases and malignancies associated with a chronic inflammatory state and increased risk of osteoporosis and muscle loss. AIM The aim of this study was to evaluate bone mineral density (BMD), body composition and their relationship with lymphocyte subpopulations in CVID patients. METHODS Dual-energy X-ray absorptiometry was performed to assess BMD, lean mass, and fat mass in CVID patients. Peripheral blood CD4+, CD8+, and CD19+ cells were measured using flow cytometry. RESULTS Thirty-three patients (37.3 ± 10.8 years old) were examined. Although only 11.8% of the individuals were malnourished (BMI <18.5 kg/m2), 27.7% of them had low skeletal muscle mass index (SMI), and 57.6% of them had low BMD. Patients with osteopenia/osteoporosis presented lower weight (p = 0.007), lean mass (p = 0.011), appendicular lean mass (p = 0.011), SMI (p = 0.017), and CD4+ count (p = 0.030). Regression models showed a positive association between CD4+ count and bone/muscle parameters, whereas CD19+ B cell count was only associated with muscle variables. Analysis of ROC curves indicated a cutoff value of CD4+ count (657 cells/mm3; AUC: 0.71, 95% CI 0.52-0.90) which was related to low BMD. Weight (p = 0.004), lean mass (p = 0.027), appendicular lean mass (p = 0.022), SMI (p = 0.029), total bone mineral content (p = 0.005), lumbar (p = 0.005), femoral neck (p = 0.035), and total hip BMD (p<0.001) were found to be lower in patients with CD4+ count below the cutoff. CONCLUSION CVID patients presented with low BMD, which was associated with CD4+ count. Moreover, low muscle parameters were correlated with B cell count.
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Affiliation(s)
- Daniel Barreto de Melo
- Clinical Immunology and Allergy Division, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
| | | | - Bruno Sini
- Clinical Immunology and Allergy Division, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Débora Levy
- Laboratory of Histo-compatibility and Cellular Immunity - LIM19, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Lilian Takayama
- Rheumatology Division, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Cristina Maria Kokron
- Clinical Immunology and Allergy Division, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
| | | | - Octavio Grecco
- Clinical Immunology and Allergy Division, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Jorge Elias Kalil Filho
- Clinical Immunology and Allergy Division, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Myrthes Toledo Barros
- Clinical Immunology and Allergy Division, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
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Lim MJ, Jung KH, Kwon SR, Park W. Inflammation is responsible for systemic bone loss in patients with seropositive rheumatoid arthritis treated with rituximab. Korean J Intern Med 2023; 38:912-922. [PMID: 37867140 PMCID: PMC10636556 DOI: 10.3904/kjim.2023.080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 05/15/2023] [Accepted: 05/23/2023] [Indexed: 10/24/2023] Open
Abstract
BACKGROUND/AIMS We investigated the effect of rituximab on systemic bone metabolism in patients with seropositive rheumatoid arthritis (RA). METHODS Twenty seropositive patients with RA were enrolled and administered one cycle of rituximab. If RA became active for > 6 months after the first rituximab cycle, a second cycle was initiated; otherwise, no additional treatment was administered. Patients were divided into two groups according to the number of rituximab treatment cycles. RESULTS In patients treated with a second cycle, the total hip bone mineral density (BMD) was clinically low, whereas the serum levels of receptor activator of nuclear factor kappa-B ligand (RANKL) were increased at 12 months. BMD in patients treated with one cycle did not change at 12 months, whereas serum RANKL levels decreased at all time points. DAS28 activity improved in both groups from baseline to 4 months; however, from 4 to 12 months, DAS28 activity worsened in the develgroup with the second cycle but remained stable in the group with one cycle. CONCLUSION Systemic inflammation, reflected by increased disease activity, may be responsible for the increase in RANKL levels, which causes systemic bone loss in rituximab-treated patients with RA. Although rituximab affects inflammation, it does not seem to alter systemic bone metabolism in RA.
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Affiliation(s)
- Mie Jin Lim
- Division of Rheumatology, Department of Internal Medicine, College of Medicine, Inha University, Incheon, Korea
| | - Kyong-Hee Jung
- Division of Rheumatology, Department of Internal Medicine, College of Medicine, Inha University, Incheon, Korea
| | - Seong-Ryul Kwon
- Division of Rheumatology, Department of Internal Medicine, College of Medicine, Inha University, Incheon, Korea
| | - Won Park
- Division of Rheumatology, Department of Internal Medicine, College of Medicine, Inha University, Incheon, Korea
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20
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Liu X, Zhou Z, Zeng WN, Zeng Q, Zhang X. The role of toll-like receptors in orchestrating osteogenic differentiation of mesenchymal stromal cells and osteoimmunology. Front Cell Dev Biol 2023; 11:1277686. [PMID: 37941898 PMCID: PMC10629627 DOI: 10.3389/fcell.2023.1277686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 10/11/2023] [Indexed: 11/10/2023] Open
Abstract
Osteoimmunology is a concept involving molecular and cellular crosstalk between the skeletal and immune systems. Toll-like receptors (TLRs) are widely expressed both on mesenchymal stromal cells (MSCs), the hematopoietic cells, and immune cells in the osteogenic microenvironment for bone development or repair. TLRs can sense both exogenous pathogen-associated molecular patterns (PAMPs) derived from microorganisms, and damage-associated molecular patterns (DAMPs) derived from normal cells subjected to injury, inflammation, or cell apoptosis under physiological or pathological conditions. Emerging studies reported that TLR signaling plays an important role in bone remodeling by directly impacting MSC osteogenic differentiation or osteoimmunology. However, how to regulate TLR signaling is critical and remains to be elucidated to promote the osteogenic differentiation of MSCs and new bone formation for bone tissue repair. This review outlines distinct TLR variants on MSCs from various tissues, detailing the impact of TLR pathway activation or inhibition on MSC osteogenic differentiation. It also elucidates TLR pathways' interplay with osteoclasts, immune cells, and extracellular vesicles (EVs) derived from MSCs. Furthermore, we explore biomaterial-based activation to guide MSCs' osteogenic differentiation. Therefore, understanding TLRs' role in this context has significant implications for advancing bone regeneration and repair strategies.
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Affiliation(s)
- Xiaoyang Liu
- Orthopedic Research Institution, Department of Orthopedics, West China Hospital, Sichuan University, Chengdu, China
| | - Zongke Zhou
- Orthopedic Research Institution, Department of Orthopedics, West China Hospital, Sichuan University, Chengdu, China
| | - Wei-Nan Zeng
- Orthopedic Research Institution, Department of Orthopedics, West China Hospital, Sichuan University, Chengdu, China
| | - Qin Zeng
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, China
- NMPA Key Laboratory for Quality Research and Control of Tissue Regenerative Biomaterials & Institute of Regulatory Science for Medical Devices & NMPA Research Base of Regulatory Science for Medical Devices, Sichuan University, Chengdu, China
| | - Xingdong Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, China
- NMPA Key Laboratory for Quality Research and Control of Tissue Regenerative Biomaterials & Institute of Regulatory Science for Medical Devices & NMPA Research Base of Regulatory Science for Medical Devices, Sichuan University, Chengdu, China
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21
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Wang H, Lin S, Feng L, Huang B, Lu X, Yang Z, Jiang Z, Li Y, Zhang X, Wang M, Wang B, Kong L, Pan Q, Bai S, Li Y, Yang Y, Lee WYW, Currie PD, Lin C, Jiang Y, Chen J, Tortorella MD, Li H, Li G. Low-Dose Staphylococcal Enterotoxin C2 Mutant Maintains Bone Homeostasis via Regulating Crosstalk between Bone Formation and Host T-Cell Effector Immunity. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2300989. [PMID: 37552005 PMCID: PMC10558680 DOI: 10.1002/advs.202300989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 06/22/2023] [Indexed: 08/09/2023]
Abstract
Studies in recent years have highlighted an elaborate crosstalk between T cells and bone cells, suggesting that T cells may be alternative therapeutic targets for the maintenance of bone homeostasis. Here, it is reported that systemic administration of low-dose staphylococcal enterotoxin C2 (SEC2) 2M-118, a form of mutant superantigen, dramatically alleviates ovariectomy (OVX)-induced bone loss via modulating T cells. Specially, SEC2 2M-118 treatment increases trabecular bone mass significantly via promoting bone formation in OVX mice. These beneficial effects are largely diminished in T-cell-deficient nude mice and can be rescued by T-cell reconstruction. Neutralizing assays determine interferon gamma (IFN-γ) as the key factor that mediates the beneficial effects of SEC2 2M-118 on bone. Mechanistic studies demonstrate that IFN-γ stimulates Janus kinase/signal transducer and activator of transcription (JAK-STAT) signaling, leading to enhanced production of nitric oxide, which further activates p38 mitogen-activated protein kinase (MAPK) and Runt-related transcription factor 2 (Runx2) signaling and promotes osteogenic differentiation. IFN-γ also directly inhibits osteoclast differentiation, but this effect is counteracted by proabsorptive factors tumor necrosis factor alpha (TNF-α) and interleukin 1 beta (IL-1β) secreted from IFN-γ-stimulated macrophages. Taken together, this work provides clues for developing innovative approaches which target T cells for the prevention and treatment of osteoporosis.
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Affiliation(s)
- Haixing Wang
- Musculoskeletal Research Laboratory, Department of Orthopaedics & Traumatology, Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongHong Kong999077China
- Centre for Regenerative Medicine and HealthHong Kong Institute of Science & InnovationChinese Academy of SciencesHong Kong999077China
| | - Sien Lin
- Musculoskeletal Research Laboratory, Department of Orthopaedics & Traumatology, Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongHong Kong999077China
| | - Lu Feng
- Centre for Regenerative Medicine and HealthHong Kong Institute of Science & InnovationChinese Academy of SciencesHong Kong999077China
| | - Baozhen Huang
- Musculoskeletal Research Laboratory, Department of Orthopaedics & Traumatology, Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongHong Kong999077China
| | - Xuan Lu
- Musculoskeletal Research Laboratory, Department of Orthopaedics & Traumatology, Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongHong Kong999077China
| | - Zhengmeng Yang
- Musculoskeletal Research Laboratory, Department of Orthopaedics & Traumatology, Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongHong Kong999077China
| | - Zhaowei Jiang
- Musculoskeletal Research Laboratory, Department of Orthopaedics & Traumatology, Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongHong Kong999077China
| | - Yu‐Cong Li
- Musculoskeletal Research Laboratory, Department of Orthopaedics & Traumatology, Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongHong Kong999077China
| | - Xiaoting Zhang
- Musculoskeletal Research Laboratory, Department of Orthopaedics & Traumatology, Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongHong Kong999077China
| | - Ming Wang
- Musculoskeletal Research Laboratory, Department of Orthopaedics & Traumatology, Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongHong Kong999077China
| | - Bin Wang
- Greater Bay Area Institute of Precision Medicine (Guangzhou)Fudan University2nd Nanjiang Rd, Nansha DistrictGuangzhou511458China
| | - Lingchi Kong
- Department of Orthopaedic SurgeryShanghai Jiao Tong University Affiliated Sixth People's HospitalYishan Rd. 600Shanghai200233China
| | - Qi Pan
- Department of OrthopaedicsSouth China HospitalShenzhen UniversityShenzhen518116China
| | - Shanshan Bai
- Musculoskeletal Research Laboratory, Department of Orthopaedics & Traumatology, Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongHong Kong999077China
| | - Yuan Li
- Musculoskeletal Research Laboratory, Department of Orthopaedics & Traumatology, Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongHong Kong999077China
| | - Yongkang Yang
- Musculoskeletal Research Laboratory, Department of Orthopaedics & Traumatology, Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongHong Kong999077China
| | - Wayne Yuk Wai Lee
- Musculoskeletal Research Laboratory, Department of Orthopaedics & Traumatology, Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongHong Kong999077China
| | - Peter D. Currie
- Australian Regenerative Medicine InstituteMonash UniversityWellington RoadClaytonVictoria3800Australia
| | - Changshuang Lin
- Shenyang Xiehe Biopharmaceutical Co. Ltd.ShenyangLiaoning Province110179China
| | - Yanfu Jiang
- Shenyang Xiehe Biopharmaceutical Co. Ltd.ShenyangLiaoning Province110179China
| | - Juyu Chen
- Shenyang Xiehe Biopharmaceutical Co. Ltd.ShenyangLiaoning Province110179China
| | - Micky D. Tortorella
- Centre for Regenerative Medicine and HealthHong Kong Institute of Science & InnovationChinese Academy of SciencesHong Kong999077China
| | - Hongyi Li
- Shenyang Xiehe Biopharmaceutical Co. Ltd.ShenyangLiaoning Province110179China
| | - Gang Li
- Musculoskeletal Research Laboratory, Department of Orthopaedics & Traumatology, Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongHong Kong999077China
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Lv W, Zheng Y, Jiao J, Fu Y, Xu T, Zhang L, Zhang Z, Ma N. The Role of XBP1 in bone metabolism. Front Endocrinol (Lausanne) 2023; 14:1217579. [PMID: 37795354 PMCID: PMC10546391 DOI: 10.3389/fendo.2023.1217579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 09/04/2023] [Indexed: 10/06/2023] Open
Abstract
Bone is a dynamic organ that, once formed, undergoes a constant remodeling process that includes bone resorption and synthesis. Osteoclasts and osteoblasts are primarily responsible for controlling this process. X-box binding protein 1 (XBP1), a transcription factor, affects the metabolism of bones in various ways. In recent years, numerous studies have revealed that XBP1 plays a vital role in bone metabolism, including osteoclast and osteoblast development, as well as in regulating immune cell differentiation that affects the immune microenvironment of bone remodeling. In this review, we highlight the regulatory mechanisms of XBP1 on osteoclasts and osteoblasts, how XBP1 affects the immune microenvironment of bone remodeling by influencing the differentiation of immune cells, and predict the possible future research directions of XBP1 to provide new insights for the treatment of bone-related metabolic diseases.
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Affiliation(s)
- Wenhao Lv
- Hospital of Stomatology, Jilin University, Changchun, China
| | - Youli Zheng
- The School and Hospital of Stomatology, Tianjin Medical University, Tianjin, China
| | - Junjun Jiao
- Hospital of Stomatology, Jilin University, Changchun, China
| | - Yu Fu
- Hospital of Stomatology, Jilin University, Changchun, China
| | - Tingrui Xu
- Hospital of Stomatology, Jilin University, Changchun, China
| | - Li Zhang
- Hospital of Stomatology, Jilin University, Changchun, China
| | - Zheng Zhang
- Tianjin Stomatological Hospital, School of Medicine, Nankai University, Tianjin, China
- Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction, Tianjin, China
| | - Ning Ma
- Hospital of Stomatology, Jilin University, Changchun, China
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23
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Mi B, Xiong Y, Zha K, Cao F, Zhou W, Abbaszadeh S, Ouyang L, Liao Y, Hu W, Dai G, Zhao Z, Feng Q, Shahbazi MA, Liu G. Immune homeostasis modulation by hydrogel-guided delivery systems: a tool for accelerated bone regeneration. Biomater Sci 2023; 11:6035-6059. [PMID: 37522328 DOI: 10.1039/d3bm00544e] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/01/2023]
Abstract
Immune homeostasis is delicately mediated by the dynamic balance between effector immune cells and regulatory immune cells. Local deviations from immune homeostasis in the microenvironment of bone fractures, caused by an increased ratio of effector to regulatory cues, can lead to excessive inflammatory conditions and hinder bone regeneration. Therefore, achieving effective and localized immunomodulation of bone fractures is crucial for successful bone regeneration. Recent research has focused on developing localized and specific immunomodulatory strategies using local hydrogel-based delivery systems. In this review, we aim to emphasize the significant role of immune homeostasis in bone regeneration, explore local hydrogel-based delivery systems, discuss emerging trends in immunomodulation for enhancing bone regeneration, and address the limitations of current delivery strategies along with the challenges of clinical translation.
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Affiliation(s)
- Bobin Mi
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China.
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Yuan Xiong
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China.
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Kangkang Zha
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China.
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Faqi Cao
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China.
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Wu Zhou
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China.
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Samin Abbaszadeh
- Department of Biomedical Engineering, University Medical Center Groningen, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Lizhi Ouyang
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China.
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Yuheng Liao
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China.
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Weixian Hu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China.
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Guandong Dai
- Department of Orthopedic Surgery, Pingshan District People's Hospital of Shenzhen, Pingshan General Hospital of Southern Medical University, Shenzhen 518118, China
| | - Zhiming Zhao
- Department of Orthopedics, Suizhou Hospital, Hubei University of Medicine, Suizhou 441300, China
| | - Qian Feng
- Key Laboratory of Biorheological Science and Technology, Ministry of Education College of Bioengineering, Chongqing University, Chongqing 400044, China.
| | - Mohammad-Ali Shahbazi
- Department of Biomedical Engineering, University Medical Center Groningen, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
- W.J. Kolff Institute for Biomedical Engineering and Materials Science, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands.
| | - Guohui Liu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China.
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
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Zhou C, Shen S, Zhang M, Luo H, Zhang Y, Wu C, Zeng L, Ruan H. Mechanisms of action and synergetic formulas of plant-based natural compounds from traditional Chinese medicine for managing osteoporosis: a literature review. Front Med (Lausanne) 2023; 10:1235081. [PMID: 37700771 PMCID: PMC10493415 DOI: 10.3389/fmed.2023.1235081] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 08/15/2023] [Indexed: 09/14/2023] Open
Abstract
Osteoporosis (OP) is a systemic skeletal disease prevalent in older adults, characterized by substantial bone loss and deterioration of microstructure, resulting in heightened bone fragility and risk of fracture. Traditional Chinese Medicine (TCM) herbs have been widely employed in OP treatment owing to their advantages, such as good tolerance, low toxicity, high efficiency, and minimal adverse reactions. Increasing evidence also reveals that many plant-based compounds (or secondary metabolites) from these TCM formulas, such as resveratrol, naringin, and ginsenoside, have demonstrated beneficial effects in reducing the risk of OP. Nonetheless, the comprehensive roles of these natural products in OP have not been thoroughly clarified, impeding the development of synergistic formulas for optimal OP treatment. In this review, we sum up the pathological mechanisms of OP based on evidence from basic and clinical research; emphasis is placed on the in vitro and preclinical in vivo evidence-based anti-OP mechanisms of TCM formulas and their chemically active plant constituents, especially their effects on imbalanced bone homeostasis regulated by osteoblasts (responsible for bone formation), osteoclasts (responsible for bone resorption), bone marrow mesenchymal stem cells as well as bone microstructure, angiogenesis, and immune system. Furthermore, we prospectively discuss the combinatory ingredients from natural products from these TCM formulas. Our goal is to improve comprehension of the pharmacological mechanisms of TCM formulas and their chemically active constituents, which could inform the development of new strategies for managing OP.
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Affiliation(s)
- Chengcong Zhou
- Institute of Orthopaedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Traditional Chinese Medicine), Hangzhou, China
| | - Shuchao Shen
- Institute of Orthopaedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Traditional Chinese Medicine), Hangzhou, China
| | - Muxin Zhang
- Institute of Orthopaedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Traditional Chinese Medicine), Hangzhou, China
| | - Huan Luo
- Department of Pharmacy, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yuliang Zhang
- Hangzhou Fuyang Hospital of TCM Orthopedics and Traumatology, Hangzhou, China
| | - Chengliang Wu
- Institute of Orthopaedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Traditional Chinese Medicine), Hangzhou, China
| | - Lingfeng Zeng
- Guangdong Provincial Hospital of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Hongfeng Ruan
- Institute of Orthopaedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Traditional Chinese Medicine), Hangzhou, China
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25
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Liu X, Li F, Dong Z, Gu C, Mao D, Chen J, Luo L, Huang Y, Xiao J, Li Z, Liu Z, Yang Y. Metal-polyDNA nanoparticles reconstruct osteoporotic microenvironment for enhanced osteoporosis treatment. SCIENCE ADVANCES 2023; 9:eadf3329. [PMID: 37531423 PMCID: PMC10396296 DOI: 10.1126/sciadv.adf3329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 06/29/2023] [Indexed: 08/04/2023]
Abstract
Current clinical approaches to osteoporosis primarily target osteoclast biology, overlooking the synergistic role of bone cells, immune cells, cytokines, and inorganic components in creating an abnormal osteoporotic microenvironment. Here, metal-polyDNA nanoparticles (Ca-polyCpG MDNs) composed of Ca2+ and ultralong single-stranded CpG sequences were developed to reconstruct the osteoporotic microenvironment and suppress osteoporosis. Ca-polyCpG MDNs can neutralize osteoclast-secreted hydrogen ions, provide calcium repletion, promote remineralization, and repair bone defects. Besides, the immune-adjuvant polyCpG in MDNs could induce the secretion of osteoclastogenesis inhibitor interleukin-12 and reduce the expression of osteoclast function effector protein to inhibit osteoclast differentiation, further reducing osteoclast-mediated bone resorption. PPi4- generated during the rolling circle amplification reaction acts as bisphosphonate analog and enhances bone targeting of Ca-polyCpG MDNs. In ovariectomized mouse and rabbit models, Ca-polyCpG MDNs prevented bone resorption and promoted bone repair by restoring the osteoporotic microenvironment, providing valuable insights into osteoporosis therapy.
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Affiliation(s)
- Xueliang Liu
- Institute of Molecular Medicine (IMM), Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Fan Li
- Institute of Functional Nano & Soft Materials Laboratory (FUNSOM), Soochow University, Suzhou, Jiangsu 215123, China
| | - Ziliang Dong
- Department of Orthopaedic Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Chao Gu
- Institute of Molecular Medicine (IMM), Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
- Department of Anesthesiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Dongsheng Mao
- Institute of Molecular Medicine (IMM), Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jingqi Chen
- Institute of Molecular Medicine (IMM), Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Lei Luo
- Institute of Molecular Medicine (IMM), Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yuting Huang
- Institute of Molecular Medicine (IMM), Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jie Xiao
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai 200433, China
| | - Zhanchun Li
- Institute of Functional Nano & Soft Materials Laboratory (FUNSOM), Soochow University, Suzhou, Jiangsu 215123, China
| | - Zhuang Liu
- Department of Orthopaedic Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Yu Yang
- Institute of Molecular Medicine (IMM), Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
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26
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Vahidi G, Moody M, Welhaven HD, Davidson L, Rezaee T, Behzad R, Karim L, Roggenbeck BA, Walk ST, Martin SA, June RK, Heveran CM. Germ-Free C57BL/6 Mice Have Increased Bone Mass and Altered Matrix Properties but Not Decreased Bone Fracture Resistance. J Bone Miner Res 2023; 38:1154-1174. [PMID: 37221143 PMCID: PMC10530360 DOI: 10.1002/jbmr.4835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 05/02/2023] [Accepted: 05/12/2023] [Indexed: 05/25/2023]
Abstract
The gut microbiome impacts bone mass, which implies a disruption to bone homeostasis. However, it is not yet clear how the gut microbiome affects the regulation of bone mass and bone quality. We hypothesized that germ-free (GF) mice have increased bone mass and decreased bone toughness compared with conventionally housed mice. We tested this hypothesis using adult (20- to 21-week-old) C57BL/6J GF and conventionally raised female and male mice (n = 6-10/group). Trabecular microarchitecture and cortical geometry were measured from micro-CT of the femur distal metaphysis and cortical midshaft. Whole-femur strength and estimated material properties were measured using three-point bending and notched fracture toughness. Bone matrix properties were measured for the cortical femur by quantitative back-scattered electron imaging and nanoindentation, and, for the humerus, by Raman spectroscopy and fluorescent advanced glycation end product (fAGE) assay. Shifts in cortical tissue metabolism were measured from the contralateral humerus. GF mice had reduced bone resorption, increased trabecular bone microarchitecture, increased tissue strength and decreased whole-bone strength that was not explained by differences in bone size, increased tissue mineralization and fAGEs, and altered collagen structure that did not decrease fracture toughness. We observed several sex differences in GF mice, most notably for bone tissue metabolism. Male GF mice had a greater signature of amino acid metabolism, and female GF mice had a greater signature of lipid metabolism, exceeding the metabolic sex differences of the conventional mice. Together, these data demonstrate that the GF state in C57BL/6J mice alters bone mass and matrix properties but does not decrease bone fracture resistance. © 2023 The Authors. Journal of Bone and Mineral Research published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Ghazal Vahidi
- Department of Mechanical & Industrial Engineering; Montana State University, Bozeman MT 59717
| | - Maya Moody
- Department of Chemistry & Biochemistry; Montana State University, Bozeman MT 59717
| | - Hope D. Welhaven
- Department of Chemistry & Biochemistry; Montana State University, Bozeman MT 59717
| | - Leah Davidson
- Department of Chemical and Biological Engineering; University of Idaho, Moscow ID 83844
| | - Taraneh Rezaee
- Department of Bioengineering; University of Massachusetts, Dartmouth, MA 02747
| | - Ramina Behzad
- Department of Bioengineering; University of Massachusetts, Dartmouth, MA 02747
| | - Lamya Karim
- Department of Bioengineering; University of Massachusetts, Dartmouth, MA 02747
| | - Barbara A. Roggenbeck
- Department of Microbiology & Cell Biology, Montana State University; Bozeman MT 59717
| | - Seth T. Walk
- Department of Microbiology & Cell Biology, Montana State University; Bozeman MT 59717
| | - Stephan A. Martin
- Translational Biomarkers Core Laboratory; Center for American Indian and Rural Health Equity; Montana State University, Bozeman MT 59717
| | - Ronald K. June
- Department of Mechanical & Industrial Engineering; Montana State University, Bozeman MT 59717
| | - Chelsea M. Heveran
- Department of Mechanical & Industrial Engineering; Montana State University, Bozeman MT 59717
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27
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Shevchenko JA, Perik-Zavodskii RY, Nazarov KV, Denisova VV, Perik-Zavodskaya OY, Philippova YG, Alsalloum A, Sennikov SV. Immunoregulatory properties of erythroid nucleated cells induced from CD34+ progenitors from bone marrow. PLoS One 2023; 18:e0287793. [PMID: 37390055 PMCID: PMC10313023 DOI: 10.1371/journal.pone.0287793] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 06/14/2023] [Indexed: 07/02/2023] Open
Abstract
CD 71+ erythroid nucleated cells have pronounced immunoregulatory properties in normal and pathological conditions. Many populations of cells with immunoregulatory properties are considered candidates for cellular immunotherapy for various pathologies. This study characterized the immunoregulatory properties of CD71+ erythroid cells derived from CD34-positive bone marrow cells under the influence of growth factors that stimulate differentiation into erythroid cells. CD34-negative bone marrow cells were used to isolate CD71+ erythroid nuclear cells. The resulting cells were used to assess the phenotype, determine the mRNA spectrum of the genes responsible for the main pathways and processes of the immune response, and obtain culture supernatants for the analysis of immunoregulatory factors. It was found that CD71+ erythroid cells derived from CD34+ cells carry the main markers of erythroid cells, but differ markedly from natural bone marrow CD71+ erythroid cells. The main differences are in the presence of the CD45+ subpopulation, distribution of terminal differentiation stages, transcriptional profile, secretion of certain cytokines, and immunosuppressive activity. The properties of induced CD71+ erythroid cells are closer to the cells of extramedullary erythropoiesis foci than to natural bone marrow CD71+ erythroid cells. Thus, when cultivating CD71+ erythroid cells for clinical experimental studies, it is necessary to take into account their pronounced immunoregulatory activity.
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Affiliation(s)
- Julia A. Shevchenko
- Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution “Research Institute of Fundamental and Clinical Immunology”, Novosibirsk, Russia
| | - Roman Yu Perik-Zavodskii
- Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution “Research Institute of Fundamental and Clinical Immunology”, Novosibirsk, Russia
| | - Kirill V. Nazarov
- Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution “Research Institute of Fundamental and Clinical Immunology”, Novosibirsk, Russia
| | - Vera V. Denisova
- Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution “Research Institute of Fundamental and Clinical Immunology”, Novosibirsk, Russia
| | - Olga Yu. Perik-Zavodskaya
- Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution “Research Institute of Fundamental and Clinical Immunology”, Novosibirsk, Russia
| | - Yulia G. Philippova
- Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution “Research Institute of Fundamental and Clinical Immunology”, Novosibirsk, Russia
| | - Alaa Alsalloum
- Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution “Research Institute of Fundamental and Clinical Immunology”, Novosibirsk, Russia
| | - Sergey V. Sennikov
- Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution “Research Institute of Fundamental and Clinical Immunology”, Novosibirsk, Russia
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28
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Frase D, Lee C, Nachiappan C, Gupta R, Akkouch A. The Inflammatory Contribution of B-Lymphocytes and Neutrophils in Progression to Osteoporosis. Cells 2023; 12:1744. [PMID: 37443778 PMCID: PMC10340451 DOI: 10.3390/cells12131744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 06/20/2023] [Accepted: 06/24/2023] [Indexed: 07/15/2023] Open
Abstract
Osteoporosis is a bone disease characterized by structural deterioration and low bone mass, leading to fractures and significant health complications. In this review, we summarize the mechanisms by which B-lymphocytes and neutrophils contribute to the development of osteoporosis and potential therapeutics targeting these immune mediators to reduce the proinflammatory milieu. B-lymphocytes-typically appreciated for their canonical role in adaptive, humoral immunity-have emerged as critical regulators of bone remodeling. B-lymphocytes communicate with osteoclasts and osteoblasts through various cytokines, including IL-7, RANK, and OPG. In inflammatory conditions, B-lymphocytes promote osteoclast activation and differentiation. However, B-lymphocytes also possess immunomodulatory properties, with regulatory B-lymphocytes (Bregs) secreting TGF-β1 to restrain pathogenic osteoclastogenesis. Neutrophils, the body's most prevalent leukocyte, also contribute to the proinflammatory environment that leads to osteoporotic bone remodeling. In aged individuals, neutrophils display reduced chemotaxis, phagocytosis, and apoptosis. Understanding the delicate interplay between B-lymphocytes and neutrophils in the context of impaired bone metabolism is crucial for targeted therapies for osteoporosis.
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Affiliation(s)
- Drew Frase
- Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI 49008, USA; (D.F.)
| | - Chi Lee
- Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI 49008, USA; (D.F.)
| | - Chidambaram Nachiappan
- Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI 49008, USA; (D.F.)
| | - Richa Gupta
- Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI 49008, USA; (D.F.)
| | - Adil Akkouch
- Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI 49008, USA; (D.F.)
- Department of Orthopaedic Surgery and Medical Engineering Program, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI 49008, USA
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Zhang Y, Huang H, Chen H, Zhang P, Liu Y, Gan Y, Yan X, Xie B, Liu H, He B, Tang J, Shen G, Jiang X. Unearths IFNB1 immune infiltrates in SOP-related ossification of ligamentum flavum pathogenesis. Heliyon 2023; 9:e16722. [PMID: 37303521 PMCID: PMC10248278 DOI: 10.1016/j.heliyon.2023.e16722] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 05/23/2023] [Accepted: 05/25/2023] [Indexed: 06/13/2023] Open
Abstract
Background Ossification of ligamentum flavum (OLF) is a hidden, indolent disease condition with variable unexplained etiology and pathology. Growing evidences show a correlation between senile osteoporosis (SOP) and OLF, but the fundamental relationship between SOP and OLF remains unclear. Therefore, the purpose of this work is to investigate unique SOP-related genes and their potential functions in OLF. Methods Gene Expression Omnibus (GEO) database was utilized to gather the mRNA expression data (GSE106253) and then analyzed by R software. A variety of methods, including ssGSEA, machine learning (LASSO and SVM-RFE), GO and KEGG enrichment, PPI network, transcription factor enrichment analysis (TFEA), GSEA and xCells were employed to verified the critical genes and signaling pathways. Furthermore, ligamentum flavum cells were cultured and used in vitro to identify the expression of the core genes. Results The preliminary identification of 236 SODEGs revealed their involvement in BP pathways associated with ossification, inflammation, and immune response, including the TNF signaling pathway, PI3K/AKT signaling pathway and osteoclast differentiation. Four down-regulated genes (SERPINE1, SOCS3, AKT1, CCL2) and one up-regulated gene (IFNB1) were among the five hub SODEGs that were validated. Additionally, they were performed by ssGSEA and xCell to show the relationship of immune cells infiltrating in OLF. The most fundamental gene, IFNB1, which was only found in the classical ossification- and inflammation-related pathways, suggested that it may affect OLF via regulating the inflammatory response. In vitro experiment, we found that IFNB1 expression was dramatically higher in cells cocultured with osteogenic induction than in controls. Conclusion As far as we are concerned, this is the first observation using transcriptome data mining to reveal distinct SOP-related gene profiles between OLF and normal controls. Five hub SODEGs were ultimately found using bioinformatics algorithms and experimental verification. These genes may mediate intricate inflammatory/immune responses or signaling pathways in the pathogenesis of OLF, according to the thorough functional annotations. Since IFNB1 was discovered to be a key gene and was connected to numerous immune infiltrates in OLF, it is possible that IFNB1 expression has a substantial impact on the pathogenesis of OLF. Our research will give rise to new possibilities for potential therapeutics that target SOP reverent genes and immune-associated pathways in OLF.
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Affiliation(s)
- You Zhang
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Hongwei Huang
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China
- People's Hospital of Yang Jiang, Yang Jiang 529500, China
| | - Honglin Chen
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Peng Zhang
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Yu Liu
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Yanchi Gan
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Xianwei Yan
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Bin Xie
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Hao Liu
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Bowen He
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Jingjing Tang
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Gengyang Shen
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Xiaobing Jiang
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
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Kuhn MB, VandenBerg HS, Reynolds AJ, Carson MD, Warner AJ, LaRue AC, Novince CM, Hathaway-Schrader JD. C3a-C3aR signaling is a novel modulator of skeletal homeostasis. Bone Rep 2023; 18:101662. [PMID: 36860797 PMCID: PMC9969257 DOI: 10.1016/j.bonr.2023.101662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 02/13/2023] [Accepted: 02/15/2023] [Indexed: 02/18/2023] Open
Abstract
Osteoimmune studies have identified complement signaling as an important regulator of the skeleton. Specifically, complement anaphylatoxin receptors (i.e., C3aR, C5aR) are expressed on osteoblasts and osteoclasts, implying that C3a and/or C5a may be candidate mediators of skeletal homeostasis. The study aimed to determine how complement signaling influences bone modeling/remodeling in the young skeleton. Female C57BL/6J C3aR-/-C5aR-/- vs. wildtype and C3aR-/- vs. wildtype mice were examined at age 10 weeks. Trabecular and cortical bone parameters were analyzed by micro-CT. In situ osteoblast and osteoclast outcomes were determined by histomorphometry. Osteoblast and osteoclast precursors were assessed in vitro. C3aR-/-C5aR-/- mice displayed an increased trabecular bone phenotype at age 10 weeks. In vitro studies revealed C3aR-/-C5aR-/- vs. wildtype cultures had less bone-resorbing osteoclasts and increased bone-forming osteoblasts, which were validated in vivo. To determine whether C3aR alone was critical for the enhanced skeletal outcomes, wildtype vs. C3aR-/- mice were evaluated for osseous tissue outcomes. Paralleling skeletal findings in C3aR-/-C5aR-/- mice, C3aR-/- vs. wildtype mice had an enhanced trabecular bone volume fraction, which was attributed to increased trabecular number. There was elevated osteoblast activity and suppressed osteoclastic cells in C3aR-/- vs. wildtype mice. Furthermore, primary osteoblasts derived from wildtype mice were stimulated with exogenous C3a, which more profoundly upregulated C3ar1 and the pro-osteoclastic chemokine Cxcl1. This study introduces the C3a/C3aR signaling axis as a novel regulator of the young skeleton.
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Affiliation(s)
- Megan B. Kuhn
- Department of Oral Health Sciences, College of Dental Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - Hayden S. VandenBerg
- Department of Oral Health Sciences, College of Dental Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - Andrew J. Reynolds
- Department of Oral Health Sciences, College of Dental Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - Matthew D. Carson
- Department of Oral Health Sciences, College of Dental Medicine, Medical University of South Carolina, Charleston, SC, USA
- Department of Stomatology-Div. of Periodontics, College of Dental Medicine, Medical University of South Carolina, Charleston, SC, USA
- Department of Pediatrics-Div. of Endocrinology, College of Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - Amy J. Warner
- Department of Oral Health Sciences, College of Dental Medicine, Medical University of South Carolina, Charleston, SC, USA
- Department of Stomatology-Div. of Periodontics, College of Dental Medicine, Medical University of South Carolina, Charleston, SC, USA
- Department of Pediatrics-Div. of Endocrinology, College of Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - Amanda C. LaRue
- Research Services, Ralph H. Johnson Department of Veterans Affairs Health Care System, Charleston, SC, USA
- Department of Pathology and Laboratory Medicine, College of Medicine, Medical University of South Carolina, Charleston, SC, USA
- Hollings Cancer Center, Medical University of South Carolina, Charleston, SC, USA
| | - Chad M. Novince
- Department of Oral Health Sciences, College of Dental Medicine, Medical University of South Carolina, Charleston, SC, USA
- Department of Stomatology-Div. of Periodontics, College of Dental Medicine, Medical University of South Carolina, Charleston, SC, USA
- Department of Pediatrics-Div. of Endocrinology, College of Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - Jessica D. Hathaway-Schrader
- Department of Stomatology-Div. of Periodontics, College of Dental Medicine, Medical University of South Carolina, Charleston, SC, USA
- Research Services, Ralph H. Johnson Department of Veterans Affairs Health Care System, Charleston, SC, USA
- Department of Pathology and Laboratory Medicine, College of Medicine, Medical University of South Carolina, Charleston, SC, USA
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Li J, Zhao C, Xu Y, Song L, Chen Y, Xu Y, Ma Y, Wang S, Xu A, He F. Remodeling of the osteoimmune microenvironment after biomaterials implantation in murine tibia: Single-cell transcriptome analysis. Bioact Mater 2023; 22:404-422. [PMID: 36311047 PMCID: PMC9588995 DOI: 10.1016/j.bioactmat.2022.10.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 09/28/2022] [Accepted: 10/05/2022] [Indexed: 11/12/2022] Open
Abstract
Osseointegration seems to be a foreign body reaction equilibrium due to the complicated interactions between the immune and skeletal systems. The heterogeneity of the osteoimmune microenvironment in the osseointegration of implant materials remains elusive. Here, a single-cell study involving 40043 cells is conducted, and a total of 10 distinct cell clusters are identified from five different groups. A preliminary description of the osteoimmune microenvironment revealed the diverse cellular heterogeneity and dynamic changes modulated by implant properties. The increased immature neutrophils, Ly6C + CCR2hi monocytes, and S100a8hi macrophages induce an aggressive inflammatory response and eventually lead to the formation of fibrous capsule around the stainless steel implant. The enrichment of mature neutrophils, FcgR1hi and differentiated immunomodulatory macrophages around the titanium implant indicates favorable osseointegration under moderate immune response. Neutrophil-depletion mice are conducted to explore the role of neutrophils in osseointegration. Neutrophils may improve bone formation by enhancing the recruitment of BMSCs via the CXCL12/CXCR3 signal axis. These findings contribute to a better knowledge of osteoimmunology and are valuable for the design and modification of 'osteoimmune-smart' biomaterials in the bone regeneration field.
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Key Words
- BMP2, Bone Morphogenetic Proteins 2
- CXCL12, Chemokine (C-X-C mode) Ligand 12
- CXCR, CXC Chemokine Receptor
- FcgR, Fc Gamma Receptor
- IFN-γ, Interferon-gamma
- IL-1β, Interleukin-1 beta
- Implant
- MHC, Major Histocompatibility Complex
- MIP, Macrophage inflammatory cytokines
- MPO, Myeloperoxidase
- NE, Neutrophil Elastase
- NF-κB, Nuclear Factor Kappa-light-chain-enhancer of Activated B cells
- NOD, Nucleotide Binding Oligomerization Domain
- Neutrophil
- OPG, Osteoprotegerin
- Osseointegration
- Osteoimmunology
- RANKL, Nuclear Factor B receptor Activator Ligand
- RUNX2, Runt-related Transcription Factor 2
- S100a8, S100 Calcium Binding Protein A8
- SDF-1α, Stromal Cell-derived Factor-1 alpha
- STAT, Signal Transduction and Transcription Activator
- Single-cell transcriptomics
- TLR, Toll Like Receptor
- TNFα, Tumor Necrosis Factor-alpha
- TRAP, Tartrate Resistant Acid Phosphatase
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Affiliation(s)
- Jia Li
- Department of Prosthodontics, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Congrui Zhao
- Department of Prosthodontics, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Yangbo Xu
- Department of Prosthodontics, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Lu Song
- Department of Prosthodontics, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Yanqi Chen
- Department of Prosthodontics, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Yuzi Xu
- Department of Prosthodontics, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Yang Ma
- Department of Prosthodontics, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Siyuan Wang
- Department of Prosthodontics, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Antian Xu
- Department of Prosthodontics, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Fuming He
- Department of Prosthodontics, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
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Alghamdi B, Jeon HH, Ni J, Qiu D, Liu A, Hong JJ, Ali M, Wang A, Troka M, Graves DT. Osteoimmunology in Periodontitis and Orthodontic Tooth Movement. Curr Osteoporos Rep 2023; 21:128-146. [PMID: 36862360 PMCID: PMC10696608 DOI: 10.1007/s11914-023-00774-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/04/2023] [Indexed: 03/03/2023]
Abstract
PURPOSE OF REVIEW To review the role of the immune cells and their interaction with cells found in gingiva, periodontal ligament, and bone that leads to net bone loss in periodontitis or bone remodeling in orthodontic tooth movement. RECENT FINDINGS Periodontal disease is one of the most common oral diseases causing inflammation in the soft and hard tissues of the periodontium and is initiated by bacteria that induce a host response. Although the innate and adaptive immune response function cooperatively to prevent bacterial dissemination, they also play a major role in gingival inflammation and destruction of the connective tissue, periodontal ligament, and alveolar bone characteristic of periodontitis. The inflammatory response is triggered by bacteria or their products that bind to pattern recognition receptors that induce transcription factor activity to stimulate cytokine and chemokine expression. Epithelial, fibroblast/stromal, and resident leukocytes play a key role in initiating the host response and contribute to periodontal disease. Single-cell RNA-seq (scRNA-seq) experiments have added new insight into the roles of various cell types in the response to bacterial challenge. This response is modified by systemic conditions such as diabetes and smoking. In contrast to periodontitis, orthodontic tooth movement (OTM) is a sterile inflammatory response induced by mechanical force. Orthodontic force application stimulates acute inflammatory responses in the periodontal ligament and alveolar bone stimulated by cytokines and chemokines that produce bone resorption on the compression side. On the tension side, orthodontic forces induce the production of osteogenic factors, stimulating new bone formation. A number of different cell types, cytokines, and signaling/pathways are involved in this complex process. Inflammatory and mechanical force-induced bone remodeling involves bone resorption and bone formation. The interaction of leukocytes with host stromal cells and osteoblastic cells plays a key role in both initiating the inflammatory events as well as inducing a cellular cascade that results in remodeling in orthodontic tooth movement or in tissue destruction in periodontitis.
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Affiliation(s)
- Bushra Alghamdi
- Department of Endodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, PA, 19104, Philadelphia, USA
- Department of Restorative Dental Sciences, College of Dentistry, Taibah University, Medina, 42353, Kingdom of Saudi Arabia
| | - Hyeran Helen Jeon
- Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Jia Ni
- Department of Periodontics, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Dongxu Qiu
- Department of Neurology, Second Xiangya Hospital, Central South University, Changsha, China
| | - Alyssia Liu
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, PA, 19104, Philadelphia, USA
| | - Julie J Hong
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, PA, 19104, Philadelphia, USA
| | - Mamoon Ali
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, PA, 19104, Philadelphia, USA
| | - Albert Wang
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, PA, 19104, Philadelphia, USA
| | - Michael Troka
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, PA, 19104, Philadelphia, USA
| | - Dana T Graves
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, PA, 19104, Philadelphia, USA.
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Dong C, Tan G, Zhang G, Lin W, Wang G. The function of immunomodulation and biomaterials for scaffold in the process of bone defect repair: A review. Front Bioeng Biotechnol 2023; 11:1133995. [PMID: 37064239 PMCID: PMC10090379 DOI: 10.3389/fbioe.2023.1133995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 03/14/2023] [Indexed: 03/31/2023] Open
Abstract
The process of bone regeneration involves the interaction of the skeletal, blood, and immune systems. Bone provides a solid barrier for the origin and development of immune cells in the bone marrow. At the same time, immune cells secrete related factors to feedback on the remodeling of the skeletal system. Pathological or traumatic injury of bone tissue involves changes in blood supply, cell behavior, and cytokine expression. Immune cells and their factors play an essential role in repairing foreign bodies in bone injury or implantation of biomaterials, the clearance of dead cells, and the regeneration of bone tissue. This article reviews the bone regeneration application of the bone tissue repair microenvironment in bone cells and immune cells in the bone marrow and the interaction of materials and immune cells.
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Affiliation(s)
- Changchao Dong
- Trauma Medical Center, Department of Orthopedics Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
- Department of Orthopedics, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Gang Tan
- Department of Orthopedics, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Guangyan Zhang
- Department of Respiratory Medicine, The 7th Hospital of Chengdu, Chengdu, Sichuan, China
| | - Wei Lin
- Department of Gynecology, West China Second Hospital, Sichuan University, Chengdu, Sichuan, China
- *Correspondence: Wei Lin, ; Guanglin Wang,
| | - Guanglin Wang
- Trauma Medical Center, Department of Orthopedics Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
- Department of Orthopedics, West China Hospital, Orthopedics Research Institute, Sichuan University, Chengdu, Sichuan, China
- *Correspondence: Wei Lin, ; Guanglin Wang,
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Grčević D, Sanjay A, Lorenzo J. Interactions of B-lymphocytes and bone cells in health and disease. Bone 2023; 168:116296. [PMID: 34942359 PMCID: PMC9936888 DOI: 10.1016/j.bone.2021.116296] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 12/01/2021] [Accepted: 12/08/2021] [Indexed: 02/09/2023]
Abstract
Bone remodeling occurs through the interactions of three major cell lineages, osteoblasts, which mediate bone formation, osteocytes, which derive from osteoblasts, sense mechanical force and direct bone turnover, and osteoclasts, which mediate bone resorption. However, multiple additional cell types within the bone marrow, including macrophages, T lymphocytes and B lymphocytes influence the process. The bone marrow microenvironment, which is supported, in part, by bone cells, forms a nurturing network for B lymphopoiesis. In turn, developing B lymphocytes influence bone cells. Bone health during homeostasis depends on the normal interactions of bone cells with other lineages in the bone marrow. In disease state these interactions become pathologic and can cause abnormal function of bone cells and inadequate repair of bone after a fracture. This review summarizes what is known about the development of B lymphocytes and the interactions of B lymphocytes with bone cells in both health and disease.
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Affiliation(s)
- Danka Grčević
- Department of Physiology and Immunology, Croatian Institute for Brain Research, School of Medicine University of Zagreb, Zagreb, Croatia.
| | - Archana Sanjay
- Department of Orthopaedics, UConn Health, Farmington, CT, USA.
| | - Joseph Lorenzo
- Departments of Medicine and Orthopaedics, UConn Health, Farmington, CT, USA.
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Zhang J, Ye C, Zhu Y, Wang J, Liu J. The Cell-Specific Role of SHP2 in Regulating Bone Homeostasis and Regeneration Niches. Int J Mol Sci 2023; 24:ijms24032202. [PMID: 36768520 PMCID: PMC9917188 DOI: 10.3390/ijms24032202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/13/2023] [Accepted: 01/16/2023] [Indexed: 01/25/2023] Open
Abstract
Src homology-2 containing protein tyrosine phosphatase (SHP2), encoded by PTPN11, has been proven to participate in bone-related diseases, such as Noonan syndrome (NS), metachondromatosis and osteoarthritis. However, the mechanisms of SHP2 in bone remodeling and homeostasis maintenance are complex and undemonstrated. The abnormal expression of SHP2 can influence the differentiation and maturation of osteoblasts, osteoclasts and chondrocytes. Meanwhile, SHP2 mutations can act on the immune system, vasculature and nervous system, which in turn affect bone development and remodeling. Signaling pathways regulated by SHP2, such as mitogen-activated protein kinase (MAPK), Indian hedgehog (IHH) and phosphatidylinositol-4,5-bisphosphate 3-kinase (PI3K)/protein kinase B (AKT), are also involved in the proliferation, differentiation and migration of bone functioning cells. This review summarizes the recent advances of SHP2 on osteogenesis-related cells and niche cells in the bone marrow microenvironment. The phenotypic features of SHP2 conditional knockout mice and underlying mechanisms are discussed. The prospective applications of the current agonists or inhibitors that target SHP2 in bone-related diseases are also described. Full clarification of the role of SHP2 in bone remodeling will shed new light on potential treatment for bone related diseases.
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Affiliation(s)
- Jie Zhang
- Laboratory for Aging Research, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Chengxinyue Ye
- Laboratory for Aging Research, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Yufan Zhu
- Laboratory for Aging Research, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Jun Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Correspondence: (J.W.); (J.L.)
| | - Jin Liu
- Laboratory for Aging Research, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
- Correspondence: (J.W.); (J.L.)
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Tompkins YH, Choi J, Teng PY, Yamada M, Sugiyama T, Kim WK. Reduced bone formation and increased bone resorption drive bone loss in Eimeria infected broilers. Sci Rep 2023; 13:616. [PMID: 36635321 PMCID: PMC9837181 DOI: 10.1038/s41598-023-27585-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 01/04/2023] [Indexed: 01/13/2023] Open
Abstract
Coccidiosis is an economically significant disease in the global poultry industry, but little is known about the mechanisms of bone defects caused by coccidiosis; thus, the study focused on effects of coccidiosis on the bone homeostasis of young broiler chickens. A total of 480 male Cobb500 broilers were randomly allocated into four treatment groups, including an uninfected control consuming diet ad libitum, two infected groups were orally gavaged with two different concentrations of sporulated Eimeria oocysts, and an uninfected pair-fed group fed the same amount of feed as the high Eimeria-infected group consumed. Growth performance and feed intake were recorded, and samples were collected on 6 days post infection. Results indicated that coccidiosis increased systemic oxidative status and elevated immune response in bone marrow, suppressing bone growth rate (P < 0.05) and increasing bone resorption (P < 0.05) which led to lower bone mineral density (P < 0.05) and mineral content (P < 0.05) under Eimeria infection. With the same amount of feed intake, the uninfected pair-fed group showed a distinguished bone formation rate and bone resorption level compared with the Eimeria infected groups. In conclusion, inflammatory immune response and oxidative stress in broilers after Eimeria infection were closely associated with altered bone homeostasis, highlighting the role of inflammation and oxidative stress in broiler bone homeostasis during coccidiosis.
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Affiliation(s)
- Yuguo Hou Tompkins
- grid.213876.90000 0004 1936 738XDepartment of Poultry Science, University of Georgia, Athens, GA 30602 USA
| | - Janghan Choi
- grid.213876.90000 0004 1936 738XDepartment of Poultry Science, University of Georgia, Athens, GA 30602 USA
| | - Po-Yun Teng
- grid.213876.90000 0004 1936 738XDepartment of Poultry Science, University of Georgia, Athens, GA 30602 USA
| | - Masayoshi Yamada
- grid.260975.f0000 0001 0671 5144Graduate School of Science and Technology, Niigata University, 2-8050 Ikarashi, Nishi-ku, Niigata, 950-2181 Japan
| | - Toshie Sugiyama
- grid.260975.f0000 0001 0671 5144Graduate School of Science and Technology, Niigata University, 2-8050 Ikarashi, Nishi-ku, Niigata, 950-2181 Japan
| | - Woo Kyun Kim
- Department of Poultry Science, University of Georgia, Athens, GA, 30602, USA.
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Kawaguchi T, Inamo Y. Inappropriate secretion of fibroblast growth factor 23 despite hypophosphataemia with changes in bone turnover markers in a girl with systemic lupus erythematosus: Case report and review of the literature. Mod Rheumatol Case Rep 2023; 7:60-64. [PMID: 35792508 DOI: 10.1093/mrcr/rxac055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 05/22/2022] [Accepted: 06/28/2022] [Indexed: 01/07/2023]
Abstract
We report an 11-year-old girl with systemic lupus erythematosus (SLE) who showed hypophosphataemia (1.7 mg/dl, normal range: 3.9-5.8 mg/dl), a decrease in the tubular maximum reabsorption of phosphate/glomerular filtration rate (TmP/GFR) (0.77 mg/dl, normal range: 3.4-5.6 mg/dl), and an elevated serum fibroblast growth factor 23 (FGF23) (circulating phosphate-regulatory hormone) concentration (FGF23: 282 pg/ml, normal range: <52 pg/ml) at the onset. The patient was treated with intravenous pulse methylprednisolone, oral prednisolone, mycophenolate mofetil, hydroxychloroquine, and phosphorus supplement. Serum FGF23 concentrations decreased to near the reference value at 5 months after the onset of SLE, and the TmP/GFR (4.61 mg/dl) simultaneously improved. The urinary deoxypyridinoline (bone resorption marker) concentration on admission (18.9 nmol/mmol creatinine, normal range: 75.4 ± 6.8 nmol/mmol creatinine) was greatly reduced, and the bone-type alkaline phosphatase (bone formation marker) concentration (30.6 µg/l, normal range: 58.6 ± 15.3 µg/l) was also reduced during the increase in FGF23 concentrations before steroid therapy was initiated. The reason for the inappropriate secretion of FGF23, despite hypophosphataemia, remains unknown. The findings in our case suggest that changes in bone turnover markers can occur in patients with SLE and excess inappropriate secretion of FGF23, despite severe and persistent hypophosphataemia.
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Affiliation(s)
- Tadayasu Kawaguchi
- The Department of Pediatrics, Nihon University School of Medicine, Itabashi Hospital, Tokyo, Japan
| | - Yasuji Inamo
- Center for Child and Adolescent Health, Pediatric Rheumatology, and Endocrinology, Jiai Hospital, Tokyo, Japan.,Faculty of Medical Sciences, Teikyo University of Science, Tokyo, Japan
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Chai H, Wang W, Yuan X, Zhu C. Bio-Activated PEEK: Promising Platforms for Improving Osteogenesis through Modulating Macrophage Polarization. BIOENGINEERING (BASEL, SWITZERLAND) 2022; 9:bioengineering9120747. [PMID: 36550953 PMCID: PMC9774947 DOI: 10.3390/bioengineering9120747] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 10/30/2022] [Accepted: 11/17/2022] [Indexed: 12/03/2022]
Abstract
The attention on orthopedic biomaterials has shifted from their direct osteogenic properties to their osteoimmunomodulation, especially the modulation of macrophage polarization. Presently, advanced technologies endow polyetheretherketone (PEEK) with good osteoimmunomodulation by modifying PEEK surface characteristics or incorporating bioactive substances with regulating macrophage polarization. Recent studies have demonstrated that the fabrication of a hydrophilic surface and the incorporation of bioactive substances into PEEK (e.g., zinc, calcium, and phosphate) are good strategies to promote osteogenesis by enhancing the polarization of M2 macrophages. Furthermore, the modification by other osteoimmunomodulatory composites (e.g., lncRNA-MM2P, IL-4, IL-10, and chitosan) and their controlled and desired release may make PEEK an optimal bio-activated implant for regulating and balancing the osteogenic system and immune system. The purpose of this review is to comprehensively evaluate the potential of bio-activated PEEK in polarizing macrophages into M2 phenotype to improve osteogenesis. For this objective, we retrieved and discussed different kinds of bio-activated PEEK regarding improving osteogenesis through modulating macrophage polarization. Meanwhile, the relevant challenges and outlook were presented. We hope that this review can shed light on the development of bio-activated PEEK with more favorable osteoimmunomodulation.
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Affiliation(s)
- Haobu Chai
- Department of Orthopaedics, The First Affiliated Hospital of University of Science and Technology of China, University of Science and Technology of China, Hefei 230001, China
| | - Wenzhi Wang
- Department of Orthopaedics, The First Affiliated Hospital of University of Science and Technology of China, University of Science and Technology of China, Hefei 230001, China
| | - Xiangwei Yuan
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
- Correspondence: (X.Y.); (C.Z.)
| | - Chen Zhu
- Department of Orthopaedics, The First Affiliated Hospital of University of Science and Technology of China, University of Science and Technology of China, Hefei 230001, China
- Correspondence: (X.Y.); (C.Z.)
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Pantano F, Tramontana F, Iuliani M, Leanza G, Simonetti S, Piccoli A, Paviglianiti A, Cortellini A, Spinelli GP, Longo UG, Strollo R, Vincenzi B, Tonini G, Napoli N, Santini D. Changes in bone turnover markers in patients without bone metastases receiving immune checkpoint inhibitors: An exploratory analysis. J Bone Oncol 2022; 37:100459. [PMID: 36338920 PMCID: PMC9633734 DOI: 10.1016/j.jbo.2022.100459] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/26/2022] [Accepted: 10/27/2022] [Indexed: 11/11/2022] Open
Abstract
Immune checkpoint inhibitors (ICIs) are correlated with immune-related adverse events (irAEs) that may potentially affect all host tissues. The effects of ICIs on the skeleton are poorly investigated, thus we evaluated the changes of specific markers of bone resorption and formation. We found an increase of type I collagen C-terminal telopeptide (CTX-I) levels after 3 months of ICIs treatment with a concomitant reduction of N-terminal propeptide of type I procollagen (PINP) levels with a trend toward statistical significance. CTX-I increase was also associated with poor prognosis in terms of treatment response and survival.
Immune checkpoint inhibitors (ICIs) has revolutionized the treatment of different advanced solid tumors, but most patients develop severe immune-related adverse events (irAEs). Although a bi-directional crosstalk between bone and immune systems is widely described, the effect of ICIs on the skeleton is poorly investigated. Here, we analyze the changes in plasma levels of type I collagen C-terminal telopeptide (CTX-I) and N-terminal propeptide of type I procollagen (PINP), reference makers of bone turnover, in patients treated with ICIs and their association with clinical outcome. A series of 44 patients affected by advanced non-small cell lung cancer or renal cell carcinoma, without bone metastases, and treated with ICIs as monotherapy were enrolled. CTX-I and PINP plasma levels were assessed at baseline and after 3 months of ICIs treatment by ELISA kits. A significant increase of CTX-I with a concomitant decreasing trend towards the reduction of PINP was observed after 3 months of treatment. Intriguingly, CTX-I increase was associated with poor prognosis in terms of treatment response and survival. These data suggest a direct relationship between ICIs treatment, increased osteoclast activity and potential fracture risk. Overall, this study reveals that ICIs may act as triggers for skeletal events, and if confirmed in larger prospective studies, it would identify a new class of skeletal-related irAEs.
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Key Words
- APRIL, a proliferation-inducing ligand
- Bone health
- CT-scan, Computed Tomography Scan
- CTX-I, type I collagen C-Terminal telopeptide
- ECOG, Eastern Cooperative Oncology Group
- ELISA, Enzyme-Linked Immunosorbent Assay
- ICIs, Immune Checkpoint Inhibitors
- IFN-γ, Interferon-γ
- IL-6, Interleukin-6
- Immune checkpoint inhibitors (ICIs)
- N-terminal propeptide of type I procollagen (PINP)
- NSCLC, Non-Small Cell Lung Cancer
- OPG, Osteoprotegerin
- OS, Overall Survival
- PD-L1, Programmed cell Death Ligand 1
- PINP, N-terminal Propeptide of type I Procollagen
- RANKL, nuclear factor kappa-B ligand
- RCC, Renal Cell Carcinoma
- RECIST, Response Evaluation Criteria in Solid Tumors
- T0, Time 0
- T1, Time 1
- TNF-α, Tumor Necrosis Factor-α
- TTF, Time to Treatment Failure
- Th17, T helper 17
- Type I Collagen C-Terminal Telopeptide (CTX-I)
- irAEs, Immune-Related Adverse Events
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Affiliation(s)
- Francesco Pantano
- Medical Oncology Department, Campus Bio-Medico University of Rome, Rome, Italy
| | - Flavia Tramontana
- Department of Medicine, Unit of Endocrinology and Diabetes, Università Campus Bio-Medico di Roma, Rome, Italy
| | - Michele Iuliani
- Medical Oncology Department, Campus Bio-Medico University of Rome, Rome, Italy,Corresponding author.
| | - Giulia Leanza
- Department of Medicine, Unit of Endocrinology and Diabetes, Università Campus Bio-Medico di Roma, Rome, Italy
| | - Sonia Simonetti
- Medical Oncology Department, Campus Bio-Medico University of Rome, Rome, Italy
| | - Alessandra Piccoli
- Department of Medicine, Unit of Endocrinology and Diabetes, Università Campus Bio-Medico di Roma, Rome, Italy
| | - Annalisa Paviglianiti
- Department of Medicine, Unit of Endocrinology and Diabetes, Università Campus Bio-Medico di Roma, Rome, Italy,Hematology Department, Institut Català d’Oncologia Hospitalet, Barcelona, Spain,Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), Barcelona, Spain
| | - Alessio Cortellini
- Medical Oncology Department, Campus Bio-Medico University of Rome, Rome, Italy
| | - Gian Paolo Spinelli
- UOC Oncologia Universitaria, Sapienza University of Rome- Polo Pontino, Italy
| | - Umile Giuseppe Longo
- Department of Orthopaedic and Trauma Surgery, Campus Bio-Medico University of Rome, Rome, Italy
| | - Rocky Strollo
- Dipartimento di Scienze e Tecnologie per l'Uomo e l'Ambiente, Università Campus Bio-Medico di Roma, Rome, Italy
| | - Bruno Vincenzi
- Medical Oncology Department, Campus Bio-Medico University of Rome, Rome, Italy
| | - Giuseppe Tonini
- Medical Oncology Department, Campus Bio-Medico University of Rome, Rome, Italy
| | - Nicola Napoli
- Department of Medicine, Unit of Endocrinology and Diabetes, Università Campus Bio-Medico di Roma, Rome, Italy
| | - Daniele Santini
- Medical Oncology Department, Campus Bio-Medico University of Rome, Rome, Italy,UOC Oncologia Universitaria, Sapienza University of Rome- Polo Pontino, Italy
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Peng C, Guo Z, Zhao Y, Li R, Wang L, Gong W. Effect of Lymphocyte Subsets on Bone Density in Senile Osteoporosis: A Retrospective Study. J Immunol Res 2022; 2022:3337622. [PMID: 36339939 PMCID: PMC9629916 DOI: 10.1155/2022/3337622] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 10/14/2022] [Accepted: 10/15/2022] [Indexed: 11/17/2022] Open
Abstract
Background Several studies have shown that lymphocyte subsets can mediate the occurrence of osteoporosis (OP); however, the predictive ability of lymphocyte subsets in senile OP has not been elucidated. Purpose To investigate the ability of lymphocyte subsets to predict senile osteoporosis (OP). Methods and Materials This study included 44 patients with senile OP and 44 without OP. Dual-energy X-ray absorptiometry (DEXA) was used to determine bone mineral density (BMD). Flow cytometry was used to analyze the absolute counts of the lymphocyte subsets and cytokine levels. Finally, the correlation between BMD and lymphocyte subset counts in the two groups was analyzed. Results There were no significant differences in age, sex, or weight between the OP and non-OP groups. The absolute counts of total T lymphocytes and CD8+ T lymphocytes in the OP group were significantly lower than those in the non-OP group. The levels of IFN-γ or TNF-α in the OP group were significantly higher or lower, respectively, than those in the non-OP group. PCA showed that age, BMI, total T lymphocytes, CD4+ T lymphocytes, CD8+ T lymphocytes, and B lymphocytes were the principal components of senile OP. The linear regression equation showed that BMD of the right femoral neck significantly decreased with a decline in CD8+ T lymphocyte counts. Conclusion BMD decreased with a decrease in CD8+ T lymphocytes. The mechanism by which lower lymphocyte subsets lead to lower BMD may be related to abnormal bone metabolism caused by immune aging. Therefore, we considered that CD8+ T lymphocytes could be used to predict the incidence of senile OP.
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Affiliation(s)
- Cong Peng
- Tuberculosis Prevention and Control Key Laboratory/Beijing Key Laboratory of New Techniques of Tuberculosis Diagnosis and Treatment, Senior Department of Tuberculosis, The Eighth Medical Center of PLA General Hospital, Beijing 100091, China
- Department of Geriatrics, The Eighth Medical Center of PLA General Hospital, Beijing 100091, China
- Hebei North University, Zhangjiakou, 075000 Hebei, China
| | - Zongwei Guo
- Institute of Respiratory and Critical Medicine/Beijing Key Laboratory of OTIR, The Eighth Medical Center of PLA General Hospital, Beijing 100091, China
| | - Yue Zhao
- Academy of Integrated Chinese and Western Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, China
| | - Rui Li
- Hebei North University, Zhangjiakou, 075000 Hebei, China
- Institute of Respiratory and Critical Medicine/Beijing Key Laboratory of OTIR, The Eighth Medical Center of PLA General Hospital, Beijing 100091, China
| | - Liang Wang
- Department of Geriatrics, The Eighth Medical Center of PLA General Hospital, Beijing 100091, China
| | - Wenping Gong
- Tuberculosis Prevention and Control Key Laboratory/Beijing Key Laboratory of New Techniques of Tuberculosis Diagnosis and Treatment, Senior Department of Tuberculosis, The Eighth Medical Center of PLA General Hospital, Beijing 100091, China
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Gao Y, Min Q, Li X, Liu L, Lv Y, Xu W, Liu X, Wang H. Immune System Acts on Orthodontic Tooth Movement: Cellular and Molecular Mechanisms. BIOMED RESEARCH INTERNATIONAL 2022; 2022:9668610. [PMID: 36330460 PMCID: PMC9626206 DOI: 10.1155/2022/9668610] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 09/05/2022] [Accepted: 09/29/2022] [Indexed: 12/03/2022]
Abstract
Orthodontic tooth movement (OTM) is a tissue remodeling process based on orthodontic force loading. Compressed periodontal tissues have a complicated aseptic inflammatory cascade, which are considered the initial factor of alveolar bone remodeling. Since skeletal and immune systems shared a wide variety of molecules, osteoimmunology has been generally accepted as an interdisciplinary field to investigate their interactions. Unsurprisingly, OTM is considered a good mirror of osteoimmunology since it involves immune reaction and bone remolding. In fact, besides bone remodeling, OTM involves cementum resorption, soft tissue remodeling, orthodontic pain, and relapse, all correlated with immune cells and/or immunologically active substance. The aim of this paper is to review the interaction of immune system with orthodontic tooth movement, which helps gain insights into mechanisms of OTM and search novel method to short treatment period and control complications.
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Affiliation(s)
- Yajun Gao
- Department of Endodontics, Wuxi Stomatology Hospital, Wuxi, China
| | - Qingqing Min
- Department of Endodontics, Wuxi Stomatology Hospital, Wuxi, China
| | - Xingjia Li
- Department of Prosthodontics, Wuxi Stomatology Hospital, Wuxi, China
| | - Linxiang Liu
- Department of Implantology, Wuxi Stomatology Hospital, Wuxi, China
| | - Yangyang Lv
- Department of Endodontics, Wuxi Stomatology Hospital, Wuxi, China
| | - Wenjie Xu
- Department of Endodontics, Wuxi Stomatology Hospital, Wuxi, China
| | | | - Hua Wang
- Wuhu Stomatology Hospital, Wuhu, China
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Xu Z, Xu J, Li S, Cui H, Zhang G, Ni X, Wang J. S-Equol enhances osteoblastic bone formation and prevents bone loss through OPG/RANKL via the PI3K/Akt pathway in streptozotocin-induced diabetic rats. Front Nutr 2022; 9:986192. [PMID: 36337646 PMCID: PMC9633996 DOI: 10.3389/fnut.2022.986192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 10/07/2022] [Indexed: 11/13/2022] Open
Abstract
Background This study aimed to explore whether S-Equol delays diabetes-induced osteoporosis and the molecular mechanisms underlying its therapeutic effects. Materials and methods Thirty-five male Sprague–Dawley rats were randomized into five groups. The diabetic osteoporosis (DOP) group and three S-Equol treatment groups were intraperitoneally injected with streptozotocin (STZ) to develop a DOP model. After the 12-week intervention, bone transformation indicators were detected using an enzyme-linked immunosorbent assay kit; bone mineral density (BMD) and bone microstructure were obtained using dual-energy X-ray absorptiometry and microCT; morphological changes in the bone tissue were investigated using HE staining; bone morphogenetic proteins were detected using immunohistochemical staining. ROS17/2.8 cells were cultured in vitro, and Cell Counting Kit-8 was used to test the protective effects of S-Equol in osteoblastic cells in a high-fat and high-glucose environment. Furthermore, the expression of osteoprotegerin (OPG), receptor activator of nuclear factor kappa-B ligand (RANKL), estrogen receptor β(ERβ), phosphorylated Akt (pAKT)/protein kinase B (AKT), and osteocalcin (OC) in bone tissue and ROS17/2.8 cells was assessed using reverse transcription polymerase chain reaction (RT-PCR) and western blotting. To determine whether ERβ and phosphatidylinositol 3’ -kinase (PI3K)/AKT signaling pathways are involved in the process, LY294002 (PI3K signaling pathway inhibitor) and small interfering RNA targeting ERβ mRNA (si-ERβ) were used to verify the function of the ERβ-mediated PI3K/AKT pathway in this process. Results After the 12-week intervention, S-Equol enhanced BMD, improved bone microarchitecture in DOP rats (P < 0.05), and improved markers of bone metabolism (P < 0.05). In vitro, 10–6 mmol/L S-Equol was selected to significantly protect osteoblasts from high- and high-glucose environments (P < 0.05). Gene expression of OPG, ERβ, pAKT/AKT, and OC was upregulated compared to the DOP group, and RANKL was downregulated compared to the DOP group (P < 0.05) both in bone tissue and osteoblastic cells. The promotion of OPG and pAKT/AKT is mediated by LY294002 and siERβ. Conclusion S-Equol binds to ERβ to regulate OPG/RANKL via the PI3K/AKT pathway and improve DOP. Our results demonstrate the potential role of S-Equol in the treatment of DOP by targeting ERβ. Thus, S-Equol may have the potential to be an adjuvant drug for treating DOP.
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Affiliation(s)
- Zhe Xu
- Department of Nutrition, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Jing Xu
- Department of Endocrinology, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Shuo Li
- Department of Nutrition, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Hanqiang Cui
- Department of Nutrition, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Guiming Zhang
- Department of Nutrition, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Xiangmin Ni
- Department of Nutrition, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
- Xiangmin Ni,
| | - Jian Wang
- Department of Nutrition, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
- *Correspondence: Jian Wang,
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Cao RR, Yu XH, Xiong MF, Li XT, Deng FY, Lei SF. The immune factors have complex causal regulation effects on bone mineral density. Front Immunol 2022; 13:959417. [PMID: 36341399 PMCID: PMC9630477 DOI: 10.3389/fimmu.2022.959417] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 10/03/2022] [Indexed: 10/18/2023] Open
Abstract
Recent evidence has gradually recognized that the immune and skeletal systems are two closely correlated systems, but the specific immune factors on bone mineral density (BMD) are largely unknown. Based on the summary-level data of genome-wide association studies (GWASs), we performed a series of analyses including two-sample Mendelian randomization (MR) analysis to test potential causal links between 731 immune traits [including median fluorescence intensities (MFIs), absolute cell (AC) counts, relative cell (RC) counts, and morphological parameters (MP)] and BMD. After false discovery rate (FDR) correction, 9 MFI-BMD, 16 AC-BMD, 22 RC-BMD, and 5 MP-BMD pairs reached the level of significance (FDR-adjusted p< 0.05). For MFI traits, the T- and B-cell panels had the largest number of significant immune trait pairs than other panels. CD40, as a molecule expressed by four subsets of monocytes, was highlighted due to its consistently positive correlation with BMD at four sites. For both AC and RC traits, immune traits from the T-cell panel were also highlighted, with CD39-positive T-cell subsets being the most frequently observed feature. For MP traits, the most significant association immune trait with BMD was SSC-A on CD14+ monocyte. Sensitivity analyses suggested that the identified immune factors were robust to pleiotropy. Multivariable MR analysis confirmed the independent causal effect of several immune traits on BMD. Mediation analyses showed that CD40 on monocytes could mediate multiple immune traits, especially the suggestive associations of CD27 on several memory B cells with BMD mediated by CD40 on CD14+ CD16- monocyte. Our study represents the first comprehensive evaluation of the causal effects of immune traits on the risk of osteoporosis. The findings highlighted the complex and important role of immune-derived factors in the pathogenesis of osteoporosis.
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Affiliation(s)
- Rong-Rong Cao
- Center for Genetic Epidemiology and Genomics, School of Public Health, Medical College of Soochow University, Suzhou, China
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Soochow University, Suzhou, China
| | - Xing-Hao Yu
- Center for Genetic Epidemiology and Genomics, School of Public Health, Medical College of Soochow University, Suzhou, China
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Soochow University, Suzhou, China
| | - Meng-Fei Xiong
- Center for Genetic Epidemiology and Genomics, School of Public Health, Medical College of Soochow University, Suzhou, China
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Soochow University, Suzhou, China
| | - Xue-Ting Li
- Center for Genetic Epidemiology and Genomics, School of Public Health, Medical College of Soochow University, Suzhou, China
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Soochow University, Suzhou, China
| | - Fei-Yan Deng
- Center for Genetic Epidemiology and Genomics, School of Public Health, Medical College of Soochow University, Suzhou, China
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Soochow University, Suzhou, China
| | - Shu-Feng Lei
- Center for Genetic Epidemiology and Genomics, School of Public Health, Medical College of Soochow University, Suzhou, China
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Soochow University, Suzhou, China
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Guo J, Huang Q, Zhou Y, Xu Y, Zong C, Shen P, Ma Y, Zhang J, Cui Y, Yu L, Gao J, Liu G, Huang K, Xu W. Typing characteristics of metabolism-related genes in osteoporosis. Front Pharmacol 2022; 13:999157. [PMID: 36188607 PMCID: PMC9522470 DOI: 10.3389/fphar.2022.999157] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 08/15/2022] [Indexed: 11/13/2022] Open
Abstract
Objective: Osteoporosis is a common musculoskeletal disease. Fractures caused by osteoporosis place a huge burden on global healthcare. At present, the mechanism of metabolic-related etiological heterogeneity of osteoporosis has not been explored, and no research has been conducted to analyze the metabolic-related phenotype of osteoporosis. This study aimed to identify different types of osteoporosis metabolic correlates associated with underlying pathogenesis by machine learning.Methods: In this study, the gene expression profiles GSE56814 and GSE56815 of osteoporosis patients were downloaded from the GEO database, and unsupervised clustering analysis was used to identify osteoporosis metabolic gene subtypes and machine learning to screen osteoporosis metabolism-related characteristic genes. Meanwhile, multi-omics enrichment was performed using the online Proteomaps tool, and the results were validated using external datasets GSE35959 and GSE7429. Finally, the immune and stromal cell types of the signature genes were inferred by the xCell method.Results: Based on unsupervised cluster analysis, osteoporosis metabolic genotyping can be divided into three distinct subtypes: lipid and steroid metabolism subtypes, glycolysis-related subtypes, and polysaccharide subtypes. In addition, machine learning SVM identified 10 potentially metabolically related genes, GPR31, GATM, DDB2, ARMCX1, RPS6, BTBD3, ADAMTSL4, COQ6, B3GNT2, and CD9.Conclusion: Based on the clustering analysis of gene expression in patients with osteoporosis and machine learning, we identified different metabolism-related subtypes and characteristic genes of osteoporosis, which will help to provide new ideas for the metabolism-related pathogenesis of osteoporosis and provide a new direction for follow-up research.
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Affiliation(s)
- Jiandong Guo
- Hangzhou Ninth People’s Hospital, Hangzhou, China
| | - Qinghua Huang
- Zhejiang Provincial People’s Hospital, Hangzhou, China
| | - Yundong Zhou
- Shanghai Medical Innovation Fusion Biomedical Research Center, Shanghai, China
| | - Yining Xu
- Department of Orthopaedics, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Chenyu Zong
- Affiliated Hospital of Nantong University, Nantong, China
| | - Panyang Shen
- Department of Orthopaedics, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Yan Ma
- Department of Orthopaedics, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Jinxi Zhang
- Hangzhou Ninth People’s Hospital, Hangzhou, China
| | - Yongfeng Cui
- Hangzhou Ninth People’s Hospital, Hangzhou, China
| | - Liuqian Yu
- Hangzhou Ninth People’s Hospital, Hangzhou, China
| | - Jiawei Gao
- Hangzhou Ninth People’s Hospital, Hangzhou, China
| | - Gang Liu
- Department of Orthopaedics, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- *Correspondence: Gang Liu, ; Kangmao Huang, ; Wenbin Xu,
| | - Kangmao Huang
- Department of Orthopaedics, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- *Correspondence: Gang Liu, ; Kangmao Huang, ; Wenbin Xu,
| | - Wenbin Xu
- Department of Orthopaedics, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- *Correspondence: Gang Liu, ; Kangmao Huang, ; Wenbin Xu,
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Nadine S, Correia CR, Mano JF. Engineering immunomodulatory hydrogels and cell-laden systems towards bone regeneration. BIOMATERIALS ADVANCES 2022; 140:213058. [PMID: 35933955 DOI: 10.1016/j.bioadv.2022.213058] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 07/27/2022] [Accepted: 07/31/2022] [Indexed: 06/15/2023]
Abstract
The well-known synergetic interplay between the skeletal and immune systems has changed the design of advanced bone tissue engineering strategies. The immune system is essential during the bone lifetime, with macrophages playing multiple roles in bone healing and biomaterial integration. If in the past, the most valuable aspect of implants was to avoid immune responses of the host, nowadays, it is well-established how important are the crosstalks between immune cells and bone-engineered niches for an efficient regenerative process to occur. For that, it is essential to recapitulate the multiphenotypic cellular environment of bone tissue when designing new approaches. Indeed, the lack of osteoimmunomodulatory knowledge may be the explanation for the poor translation of biomaterials into clinical practice. Thus, smarter hydrogels incorporating immunomodulatory bioactive factors, stem cells, and immune cells are being proposed to develop a new generation of bone tissue engineering strategies. This review highlights the power of immune cells to upgrade the development of innovative engineered strategies, mainly focusing on orthopaedic and dental applications.
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Affiliation(s)
- Sara Nadine
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
| | - Clara R Correia
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - João F Mano
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
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Sakthiswary R, Uma Veshaaliini R, Chin KY, Das S, Sirasanagandla SR. Pathomechanisms of bone loss in rheumatoid arthritis. Front Med (Lausanne) 2022; 9:962969. [PMID: 36059831 PMCID: PMC9428319 DOI: 10.3389/fmed.2022.962969] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 08/01/2022] [Indexed: 12/18/2022] Open
Abstract
Rheumatoid arthritis (RA) is an autoimmune disease, in which the inflammatory processes involve the skeletal system and there is marked destruction of the bones and the surrounding structures. In this review, we discuss the current concepts of osteoimmunology in RA, which represent the molecular crosstalk between the immune and skeletal systems, resulting in the disruption of bone remodeling. Bone loss in RA can be focal or generalized, leading to secondary osteoporosis. We have summarized the recent studies of bone loss in RA, which focused on the molecular aspects, such as cytokines, autoantibodies, receptor activator of nuclear kappa-β ligand (RANKL) and osteoprotegerin (OPG). Apart from the above molecules, the role of aryl hydrocarbon receptor (Ahr), which is a potential key mediator in this process through the generation of the Th17 cells, is discussed. Hence, this review highlights the key insights into molecular mechanisms of bone loss in RA.
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Affiliation(s)
- Rajalingham Sakthiswary
- Department of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia
| | | | - Kok-Yong Chin
- Department of Pharmacology, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia
| | - Srijit Das
- Department of Human and Clinical Anatomy College of Medicine and Health Sciences Sultan Qaboos University, Muscat, Oman
| | - Srinivasa Rao Sirasanagandla
- Department of Human and Clinical Anatomy College of Medicine and Health Sciences Sultan Qaboos University, Muscat, Oman
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Liu J, Zhang D, Cao Y, Zhang H, Li J, Xu J, Yu L, Ye S, Yang L. Screening of crosstalk and pyroptosis-related genes linking periodontitis and osteoporosis based on bioinformatics and machine learning. Front Immunol 2022; 13:955441. [PMID: 35990678 PMCID: PMC9389017 DOI: 10.3389/fimmu.2022.955441] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Accepted: 07/11/2022] [Indexed: 11/13/2022] Open
Abstract
Background and objective This study aimed to identify crosstalk genes between periodontitis (PD) and osteoporosis (OP) and potential relationships between crosstalk and pyroptosis-related genes. Methods PD and OP datasets were downloaded from the GEO database and were performed differential expression analysis to obtain DEGs. Overlapping DEGs got crosstalk genes linking PD and OP. Pyroptosis-related genes were obtained from literature reviews. Pearson coefficients were used to calculate crosstalk and pyroptosis-related gene correlations in the PD and OP datasets. Paired genes were obtained from the intersection of correlated genes in PD and OP. PINA and STRING databases were used to conduct the crosstalk-bridge-pyroptosis genes PPI network. The clusters in which crosstalk and pyroptosis-related genes were mainly concentrated were defined as key clusters. The key clusters' hub genes and the included paired genes were identified as key crosstalk-pyroptosis genes. Using ROC curve analysis and XGBoost screened key genes. PPI subnetwork, gene-biological process and gene-pathway networks were constructed based on key genes. In addition, immune infiltration was analyzed on the PD dataset using the CIBERSORT algorithm. Results A total of 69 crosstalk genes were obtained. 13 paired genes and hub genes TNF and EGFR in the key clusters (cluster2, cluster8) were identified as key crosstalk-pyroptosis genes. ROC and XGBoost showed that PRKCB, GSDMD, ARMCX3, and CASP3 were more accurate in predicting disease than other key crosstalk-pyroptosis genes while better classifying properties as a whole. KEGG analysis showed that PRKCB, GSDMD, ARMCX3, and CASP3 were involved in neutrophil extracellular trap formation and MAPK signaling pathway pathways. Immune infiltration results showed that all four key genes positively correlated with plasma cells and negatively correlated with T cells follicular helper, macrophages M2, and DCs. Conclusion This study shows a joint mechanism between PD and OP through crosstalk and pyroptosis-related genes. The key genes PRKCB, GSDMD, ARMCX3, and CASP3 are involved in the neutrophil extracellular trap formation and MAPK signaling pathway, affecting both diseases. These findings may point the way to future research.
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Affiliation(s)
- Jia Liu
- Department of Orthodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Ding Zhang
- Department of Spine Surgery, China-Japan Union Hospital, Jilin University, Changchun, China
| | - Yu Cao
- Department of Orthodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Huichao Zhang
- Department of Orthodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Jianing Li
- Department of Endodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Jingyu Xu
- Department of Orthodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Ling Yu
- Department of Orthodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Surong Ye
- Department of Orthodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Luyi Yang
- Department of Orthodontics, Hospital of Stomatology, Jilin University, Changchun, China
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Lagerquist MK, Gupta P, Sehic E, Horkeby KL, Scheffler JM, Nordqvist J, Lawenius L, Islander U, Corciulo C, Henning P, Carlsten H, Engdahl C. Reduction of mature B cells and immunoglobulins results in increased trabecular bone. JBMR Plus 2022; 6:e10670. [PMID: 36111205 PMCID: PMC9465004 DOI: 10.1002/jbm4.10670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 07/07/2022] [Accepted: 07/22/2022] [Indexed: 11/10/2022] Open
Abstract
Inflammation has a significant effect on bone remodeling and can result in bone loss via increased stimulation of osteoclasts. Activated immunoglobulins, especially autoantibodies, can increase osteoclastogenesis and are associated with pathological bone loss. Whether immunoglobulins and mature B lymphocytes are important for general bone architecture has not been completely determined. Here we demonstrate, using a transgenic mouse model, that reduction of mature B cells and immunoglobulins leads to increased trabecular bone mass compared to wild‐type (WT) littermate controls. This bone effect is associated with a decrease in the number of osteoclasts and reduced bone resorption, despite decreased expression of osteoprotegerin. We also demonstrate that the reduction of mature B cells and immunoglobulins do not prevent bone loss caused by estrogen deficiency or arthritis compared to WT littermate controls. In conclusion, the reduction of mature B cells and immunoglobulins results in disturbed regulation of trabecular bone turnover in healthy conditions but is dispensable for pathological bone loss. © 2022 The Authors. JBMR Plus published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- Marie K. Lagerquist
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
| | - Priti Gupta
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
| | - Edina Sehic
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
| | | | - Julia M. Scheffler
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
| | - Jauquline Nordqvist
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
| | - Lina Lawenius
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
| | - Ulrika Islander
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
| | - Carmen Corciulo
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
| | - Petra Henning
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
| | - Hans Carlsten
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
| | - Cecilia Engdahl
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
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Ahmad SS, Ahmed F, Ali R, Ghoneim MM, Alshehri S, Najmi AK, Ahmad S, Ahmad MZ, Ahmad J, Khan MA. Immunology of osteoporosis: relevance of inflammatory targets for the development of novel interventions. Immunotherapy 2022; 14:815-831. [PMID: 35765988 DOI: 10.2217/imt-2021-0282] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Osteoporosis is recognized as low bone mass and deteriorated bone microarchitecture. It is the leading cause of fractures and consequent morbidity globally. The established pathophysiological evidence favors the endocrine factors for osteoporosis and the role of the immune system on the skeletal system has been recently identified. Due to the common developmental niche bone and immune system interactions have led to the emergence of osteoimmunology. Immune dysregulation can initiate inflammatory conditions that adversely affect bone integrity. The role of immune cells, such as T-lymphocytes subsets (Th17), cannot be neglected in the pathogenesis of osteoporosis. Local inflammation within the bone from any cause attracts immune cells that participate in the activation of osteoclasts. This work summarizes the present knowledge of osteoimmunology in reference to osteoporosis and identifies novel targets for immunotherapy of osteoporosis.
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Affiliation(s)
- Syed Sufian Ahmad
- Department of Pharmacology, School of Pharmaceutical Education & Research, Jamia Hamdard, Hamdard Nagar, New Delhi, 110062, India
| | - Faraha Ahmed
- Department of Pharmacology, School of Pharmaceutical Education & Research, Jamia Hamdard, Hamdard Nagar, New Delhi, 110062, India
| | - Ruhi Ali
- Delhi Institute of Pharmaceutical Education & Research (DIPSAR), DPSRU, New Delhi, 110017, India
| | - Mohammed M Ghoneim
- Department of Pharmacy Practice, College of Pharmacy, AlMaarefa University, AdDiriyah, 13713, Saudi Arabia
| | - Sultan Alshehri
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Abul Kalam Najmi
- Department of Pharmacology, School of Pharmaceutical Education & Research, Jamia Hamdard, Hamdard Nagar, New Delhi, 110062, India
| | - Sayeed Ahmad
- Department of Pharmacognosy & Phytochemistry, Bioactive Natural Product Laboratory, School of Pharmaceutical Education & Research, Jamia Hamdard, Hamdard Nagar, New Delhi, 110062, India
| | - Mohammad Zaki Ahmad
- Department of Pharmaceutics, College of Pharmacy, Najran University, Najran, 11001, Saudi Arabia
| | - Javed Ahmad
- Department of Pharmaceutics, College of Pharmacy, Najran University, Najran, 11001, Saudi Arabia
| | - Mohammad Ahmed Khan
- Department of Pharmacology, School of Pharmaceutical Education & Research, Jamia Hamdard, Hamdard Nagar, New Delhi, 110062, India
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Ding P, Tan Q, Wei Z, Chen Q, Wang C, Qi L, Wen L, Zhang C, Yao C. Toll-like receptor 9 deficiency induces osteoclastic bone loss via gut microbiota-associated systemic chronic inflammation. Bone Res 2022; 10:42. [PMID: 35624094 PMCID: PMC9142495 DOI: 10.1038/s41413-022-00210-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 02/06/2022] [Accepted: 03/13/2022] [Indexed: 02/08/2023] Open
Abstract
Toll-like receptors (TLRs) play pivotal roles in inflammation and provide important links between the immune and skeletal systems. Although the activation of TLRs may affect osteoclast differentiation and bone metabolism, whether and how TLRs are required for normal bone remodeling remains to be fully explored. In the current study, we show for the first time that TLR9-/- mice exhibit a low bone mass and low-grade systemic chronic inflammation, which is characterized by the expansion of CD4+ T cells and increased levels of inflammatory cytokines, including TNFα, RANKL, and IL1β. The increased levels of these cytokines significantly promote osteoclastogenesis and induce bone loss. Importantly, TLR9 deletion alters the gut microbiota, and this dysbiosis is the basis of the systemic inflammation and bone loss observed in TLR9-/- mice. Furthermore, through single-cell RNA sequencing, we identified myeloid-biased hematopoiesis in the bone marrow of TLR9-/- mice and determined that the increase in myelopoiesis, likely caused by the adaptation of hematopoietic stem cells to systemic inflammation, also contributes to inflammation-induced osteoclastogenesis and subsequent bone loss in TLR9-/- mice. Thus, our study provides novel evidence that TLR9 signaling connects the gut microbiota, immune system, and bone and is critical in maintaining the homeostasis of inflammation, hematopoiesis, and bone metabolism under normal conditions.
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Affiliation(s)
- Peng Ding
- Department of Orthopedic Surgery, Shanghai Jiaotong University affiliated Sixth People's Hospital, Shanghai, China
| | - Qiyuan Tan
- Department of Endocrinology and Metabolism, Shanghai Jiaotong University affiliated Sixth People's Hospital, Shanghai, China
| | - Zhanying Wei
- Department of Osteoporosis and Skeletal Disorders, Shanghai Jiaotong University affiliated Sixth People's Hospital, Shanghai, China
| | - Qiyu Chen
- Department of Orthopedic Surgery, Shanghai Jiaotong University affiliated Sixth People's Hospital, Shanghai, China
| | - Chun Wang
- Department of Osteoporosis and Skeletal Disorders, Shanghai Jiaotong University affiliated Sixth People's Hospital, Shanghai, China
| | - Luyue Qi
- Department of Endocrinology and Metabolism, Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Li Wen
- Section of Endocrinology, Department of Internal Medicine, Yale University School of Medicine, New Haven, USA
| | - Changqing Zhang
- Department of Orthopedic Surgery, Shanghai Jiaotong University affiliated Sixth People's Hospital, Shanghai, China.
| | - Chen Yao
- Department of Orthopedic Surgery, Shanghai Jiaotong University affiliated Sixth People's Hospital, Shanghai, China.
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