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Li H, Xu WX, Tan JC, Hong YM, He J, Zhao BP, Zhou JA, Zheng YM, Lei M, Zheng XQ, Ding J, Liu NN, Gao JJ, Zhang CQ, Wang H. Single-cell multi-omics identify novel regulators required for osteoclastogenesis during aging. iScience 2024; 27:110734. [PMID: 39280596 PMCID: PMC11401210 DOI: 10.1016/j.isci.2024.110734] [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: 11/16/2023] [Revised: 04/25/2024] [Accepted: 08/12/2024] [Indexed: 09/18/2024] Open
Abstract
Age-related osteoporosis manifests as a complex pathology that disrupts bone homeostasis and elevates fracture risk, yet the mechanisms facilitating age-related shifts in bone marrow macrophages/osteoclasts (BMMs/OCs) lineage are not fully understood. To decipher these mechanisms, we conducted an investigation into the determinants controlling BMMs/OCs differentiation. We performed single-cell multi-omics profiling on bone marrow samples from mice of different ages (1, 6, and 20 months) to gain a holistic understanding of cellular changes across time. Our analysis revealed that aging significantly instigates OC differentiation. Importantly, we identified Cebpd as a vital gene for osteoclastogenesis and bone resorption during the aging process. Counterbalancing the effects of Cebpd, we found Irf8, Sox4, and Klf4 to play crucial roles. By thoroughly examining the cellular dynamics underpinning bone aging, our study unveils novel insights into the mechanisms of age-related osteoporosis and presents potential therapeutic targets for future exploration.
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Affiliation(s)
- Hao Li
- Department of Orthopaedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wan-Xing Xu
- State Key Laboratory of Systems Medicine for Cancer, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jing-Cong Tan
- State Key Laboratory of Systems Medicine for Cancer, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yue-Mei Hong
- State Key Laboratory of Systems Medicine for Cancer, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jian He
- State Key Laboratory of Systems Medicine for Cancer, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ben-Peng Zhao
- State Key Laboratory of Systems Medicine for Cancer, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jin-An Zhou
- State Key Laboratory of Systems Medicine for Cancer, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yu-Min Zheng
- Quantitative Life Sciences, Faculty of Medicine & Health Sciences, McGill University, Montreal, QC, Canada
- Meakins-Christie Laboratories, Department of Medicine, McGill University Health Centre, Montreal, QC, Canada
| | - Ming Lei
- Shanghai Institute of Precision Medicine, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiao-Qi Zheng
- State Key Laboratory of Systems Medicine for Cancer, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jun Ding
- Quantitative Life Sciences, Faculty of Medicine & Health Sciences, McGill University, Montreal, QC, Canada
- Meakins-Christie Laboratories, Department of Medicine, McGill University Health Centre, Montreal, QC, Canada
| | - Ning-Ning Liu
- State Key Laboratory of Systems Medicine for Cancer, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jun-Jie Gao
- Department of Orthopaedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Sixth People's Hospital Fujian, No. 16, Luoshan Section, Jinguang Road, Luoshan Street, Jinjiang City, Quanzhou, Fujian, China
| | - Chang-Qing Zhang
- Department of Orthopaedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hui Wang
- State Key Laboratory of Systems Medicine for Cancer, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Prucsi Z, Płonczyńska A, Potempa J, Sochalska M. Uncovering the Oral Dysbiotic Microbiota as Masters of Neutrophil Responses in the Pathobiology of Periodontitis. Front Microbiol 2021; 12:729717. [PMID: 34707586 PMCID: PMC8542842 DOI: 10.3389/fmicb.2021.729717] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Accepted: 09/14/2021] [Indexed: 12/24/2022] Open
Abstract
Numerous bacterial species participate in the shift of the oral microbiome from beneficial to dysbiotic. The biggest challenge lying ahead of microbiologists, immunologists and dentists is the fact that the bacterial species act differently, although usually synergistically, on the host immune cells, including neutrophils, and on the surrounding tissues, making the investigation of single factors challenging. As biofilm is a complex community, the members interact with each other, which can be a key issue in future studies designed to develop effective treatments. To understand how a patient gets to the stage of the late-onset (previously termed chronic) periodontitis or develops other, in some cases life-threatening, diseases, it is crucial to identify the microbial composition of the biofilm and the mechanisms behind its pathogenicity. The members of the red complex (Porphyromonas gingivalis, Treponema denticola, and Tannerella forsythia) have long been associated as the cause of periodontitis and stayed in the focus of research. However, novel techniques, such as 16S clonal analysis, demonstrated that the oral microbiome diversity is greater than ever expected and it opened a new era in periodontal research. This review aims to summarize the current knowledge concerning bacterial participation beyond P. gingivalis and the red complex in periodontal inflammation mediated by neutrophils and to spread awareness about the associated diseases and pathological conditions.
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Affiliation(s)
- Zsombor Prucsi
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Alicja Płonczyńska
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Jan Potempa
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
- Department of Oral Immunity and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY, United States
| | - Maja Sochalska
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
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Kirkpatrick JE, Kirkwood KL, Woster PM. Inhibition of the histone demethylase KDM4B leads to activation of KDM1A, attenuates bacterial-induced pro-inflammatory cytokine release, and reduces osteoclastogenesis. Epigenetics 2018; 13:557-572. [PMID: 29927684 PMCID: PMC6260135 DOI: 10.1080/15592294.2018.1481703] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 05/21/2018] [Indexed: 12/14/2022] Open
Abstract
Periodontal disease (PD) afflicts 46% of Americans with no effective adjunctive therapies available. While most pharmacotherapy for PD targets bacteria, the host immune response is responsible for driving tissue damage and bone loss in severe disease. Herein, we establish that the histone demethylase KDM4B is a potential drug target for the treatment of PD. Immunohistochemical staining of diseased periodontal epithelium revealed an increased abundance of KDM4B that correlates with inflammation. In murine calvarial sections exposed to Aggregatibacter actinomycetemcomitans lipopolysaccharide (Aa-LPS), immunohistochemical staining revealed a significant increase in KDM4B protein expression. The 8-hydroxyquinoline ML324 is known to inhibit the related demethylase KDM4E in vitro, but has not been evaluated against any other targets. Our studies indicate that ML324 also inhibits KDM4B (IC50: 4.9 μM), and decreases the pro-inflammatory cytokine response to an Aa-LPS challenge in vitro. Our results suggest that KDM4B inhibition-induced immunosuppression works indirectly, requiring new protein synthesis. In addition, fluorescence-stained macrophages exhibited a significant decrease in global monomethyl histone 3 lysine 4 (H3K4me) levels following an Aa-LPS challenge that was prevented by KDM4B inhibition, suggesting this effect is produced through KDM1A-mediated demethylation of H3K4. Finally, ML324 inhibition of KDM4B in osteoclast progenitors produced a significant reduction in Aa-LPS-induced osteoclastogenesis. These data link histone methylation with host immune response to bacterial pathogens in PD, and suggest a previously unreported, alternative mechanism for epigenetic control of the host inflammatory environment. As such, KDM4B represents a new therapeutic target for treating hyper-inflammatory diseases that result in bone destruction.
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Affiliation(s)
- Joy E. Kirkpatrick
- Department of Drug Discovery and Biomedical Sciences, Medical University of South Carolina, Charleston, South Carolina, USA
| | | | - Patrick M. Woster
- Department of Drug Discovery and Biomedical Sciences, Medical University of South Carolina, Charleston, South Carolina, USA
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Napimoga MH, Rocha EP, Trindade-da-Silva CA, Demasi APD, Martinez EF, Macedo CG, Abdalla HB, Bettaieb A, Haj FG, Clemente-Napimoga JT, Inceoglu B, Hammock BD. Soluble epoxide hydrolase inhibitor promotes immunomodulation to inhibit bone resorption. J Periodontal Res 2018; 53:743-749. [PMID: 29851077 DOI: 10.1111/jre.12559] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/05/2018] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND OBJECTIVE Soluble epoxide hydrolase (sEH) is an enzyme in the arachidonate cascade which converts epoxy fatty acids (EpFAs), such as epoxyeicosatrienoic acids (EETs) produced by cytochrome P450 enzymes, to dihydroxy-eicosatrienoic acids. In the last 20 years with the development of inhibitors to sEH it has been possible to increase the levels of EETs and other EpFAs in in vivo models. Recently, studies have shown that EETs play a key role in blocking inflammation in a bone resorption process, but the mechanism is not clear. In the current study we used the sEH inhibitor (1-trifluoromethoxyphenyl-3-(1-propionylpiperidin-4-yl) urea [TPPU]) to investigate the immunomodulatory effects in a mouse periodontitis model. MATERIAL AND METHODS Mice were infected on days 0, 2, and 4 with Aggregatibacter actinomycetemcomitans and divided into groups (n = 6) that were treated orally, daily for 15 days, with 1 mg/kg of TPPU. Then, the mice were killed and their jaws were analyzed for bone resorption using morphometry. Immunoinflammatory markers in the gingival tissue were analyzed by microarray PCR or western blotting. RESULTS Infected mice treated with TPPU showed lower bone resorption than infected mice without treatment. Interestingly, infected mice showed increased expression of sEH; however, mice treated with TPPU had a reduction in expression of sEH. Besides, several proinflammatory cytokines and molecular markers were downregulated in the gingival tissue in the group treated with 1 mg/kg of TPPU. CONCLUSION The sEH inhibitor, TPPU, showed immunomodulatory effects, decreasing bone resorption and inflammatory responses in a bone resorption mouse model.
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Affiliation(s)
- M H Napimoga
- São Leopoldo Mandic Institute and Research Center, Campinas, Brazil
| | - E P Rocha
- São Leopoldo Mandic Institute and Research Center, Campinas, Brazil
| | - C A Trindade-da-Silva
- Department of Entomology and Nematology and UC Davis Comprehensive Cancer Center, University of California, Davis, CA, USA
| | - A P D Demasi
- São Leopoldo Mandic Institute and Research Center, Campinas, Brazil
| | - E F Martinez
- São Leopoldo Mandic Institute and Research Center, Campinas, Brazil
| | - C G Macedo
- São Leopoldo Mandic Institute and Research Center, Campinas, Brazil
| | - H B Abdalla
- Laboratory of Orofacial Pain, Department of Physiology, Piracicaba Dental School, State University of Campinas, Piracicaba, SP, Brazil
| | - A Bettaieb
- Department of Nutrition, University of Tennessee-Knoxville, Knoxville, TN, USA
| | - F G Haj
- Nutrition Department, University of California, Davis, CA, USA
| | | | - B Inceoglu
- Department of Entomology and Nematology and UC Davis Comprehensive Cancer Center, University of California, Davis, CA, USA
| | - B D Hammock
- Department of Entomology and Nematology and UC Davis Comprehensive Cancer Center, University of California, Davis, CA, USA
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5
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Cangussu ASR, Mariúba LAM, Lalwani P, Pereira KDES, Astolphi-Filho S, Orlandi PP, Epiphanio S, Viana KF, Ribeiro MFB, Silva HM, Marinho CRF, Nogueira PA. A hybrid protein containing MSP1a repeats and Omp7, Omp8 and Omp9 epitopes protect immunized BALB/c mice against anaplasmosis. Vet Res 2018; 49:6. [PMID: 29351812 PMCID: PMC5775529 DOI: 10.1186/s13567-018-0503-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 12/20/2017] [Indexed: 12/23/2022] Open
Abstract
Anaplasma marginale (A. marginale) has a remarkable impact on livestock production, and an effective vaccine is not currently available due to the inexistence of a small animal model. Recently, BALB/c mice were successfully infected with A. marginale, resulting in an acute and persistent anaplasmosis infection. Here, we designed a hybrid protein containing repeats of polypeptide 1a from major surface protein-1 complex (MSP1a) repeats and common epitopes of outer membrane proteins (OMPs) OMP7, OMP8 and OMP9 expressed in Escherichia coli. Our proof-of-concept assessed vaccinal effectiveness against a challenge with live bacteria. The MSP1a/OMP7/8/9 immunized BALB/C mice exhibited a strong reduction in rickettsemia and had no signs of anaplasmosis or hepatic lesions. In contrast, the non-immunized mice exhibited signs of anaplasmosis and a body weight loss associated with increases in monocyte and neutrophil counts. Furthermore, the non-immunized mice displayed atrophies with chronic inflammatory infiltrates in the spleen and increased binucleation and hydropic degeneration in the hepatocytes. Our findings demonstrated that immunization with our hybrid protein induced a strong reduction in rickettsemia and conferred protection against anaplasmosis. Therefore, given the strong evidence of the protective effect against anaplasmosis, hybrid protein designs are potential candidates for the rational design of vaccinal subunits.
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Affiliation(s)
- Alex Sander R Cangussu
- Universidade Federal do Amazonas-Programa de pós-graduação em Rede de Biodiversidade e Biotecnologia da Amazônia Legal, Manaus, AM/Brasil, Brazil. .,Universidade Federal do Tocantins-Engenharia de Bioprocessos e Biotecnologia, Gurupi, TO/Brazil, Brazil.
| | - Luis André M Mariúba
- Instituto Leônidas e Maria Deane-Fiocruz Amazônia, Manaus, Amazonas/Brazil, Brazil
| | - Pritesh Lalwani
- Instituto Leônidas e Maria Deane-Fiocruz Amazônia, Manaus, Amazonas/Brazil, Brazil
| | | | - Spartaco Astolphi-Filho
- Universidade Federal do Amazonas-Programa de pós-graduação em Rede de Biodiversidade e Biotecnologia da Amazônia Legal, Manaus, AM/Brasil, Brazil
| | - Patricia P Orlandi
- Instituto Leônidas e Maria Deane-Fiocruz Amazônia, Manaus, Amazonas/Brazil, Brazil
| | - Sabrina Epiphanio
- Departamento de Análises Clínicas e Toxicológicas da Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, São Paulo/Brazil, Brazil
| | - Kelvison F Viana
- Universidade Federal do Tocantins-Engenharia de Bioprocessos e Biotecnologia, Gurupi, TO/Brazil, Brazil
| | - Mucio Flavio B Ribeiro
- Departamento de Parasitologia do Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais/Brazil, Brazil
| | - Hidelberto M Silva
- Faculdade de Medicina, Centro Universitário Unirg, Gurupi, Tocantins/Brazil, Brazil
| | - Claudio R F Marinho
- Departamento de Parasitologia do Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Paulo A Nogueira
- Instituto Leônidas e Maria Deane-Fiocruz Amazônia, Manaus, Amazonas/Brazil, Brazil
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Loss of MAPK-activated protein kinase 2 enables potent dendritic cell-driven anti-tumour T cell response. Sci Rep 2017; 7:11746. [PMID: 28924177 PMCID: PMC5603533 DOI: 10.1038/s41598-017-12208-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 09/05/2017] [Indexed: 12/15/2022] Open
Abstract
Maintaining dendritic cells (DC) in a state of dysfunction represents a key mechanism by which tumour cells evade recognition and elimination by the immune system. Limited knowledge about the intracellular mediators of DC dysfunction restricts success of therapies aimed at reactivating a DC-driven anti-tumour immune response. Using a cell type-specific murine knock-out model, we have identified MAPK-activated protein kinase 2 (MK2) as a major guardian of a suppressive DC phenotype in the melanoma tumour microenvironment. MK2 deletion in CD11c+ cells led to an expansion of stimulatory CD103+ DCs, mounting a potent CD8+ T cell response that resulted in elimination of highly aggressive B16-F10 tumours upon toll-like receptor (TLR) activation in the presence of tumour antigen. Moreover, tumour infiltration by suppressive myeloid cells was strongly diminished. These insights into the regulation of DC functionality reveal MK2 as a targetable pathway for DC-centred immunomodulatory cancer therapies.
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Mahabady S, Tjokro N, Aharonian S, Zadeh HH, Chen C, Allayee H, Sedghizadeh PP. The in vivo T helper type 17 and regulatory T cell immune responses to Aggregatibacter actinomycetemcomitans. Mol Oral Microbiol 2017; 32:490-499. [PMID: 28544588 DOI: 10.1111/omi.12187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/18/2017] [Indexed: 12/01/2022]
Abstract
The periodontal pathogen Aggregatibacter actinomycetemcomitans is known to elicit a systemic immune response in the infected host, and occasionally causes non-oral infections. Detailed information on its immunopathological responses and the involvement of bacterial virulence factors remains to be elucidated. The aim of this study was to assess the systemic immune response to A. actinomycetemcomitans oral infection. We used an animal model that simulates systemic dissemination of the bacteria by injecting live wild-type (WT) D7S-1 and a double knockout mutant of leukotoxin and cytolethal distending toxin (ΔltxΔcdt) A. actinomycetemcomitans strains in rat oral mucosa. Draining lymph nodes were examined for regulatory T (Treg) and T helper type 17 (Th17) cell subsets and their associated mediators. An increase in the proportion of Th17 cells and a decrease in Treg cells over the experimental period of 3 weeks were similarly observed for rats challenged with WT and ΔltxΔcdt. Significant upregulation and downregulation of proinflammatory cytokines in the Th17 gene pathway was noted, as well as several qualitative differences between WT and ΔltxΔcdt. Furthermore, we observed differential fold regulation in key genes associated with a proinflammatory response in ΔltxΔcdt-inoculated rats relative to D7S-1 group. This suggests that although the knockout of these two virulence factors (ΔltxΔcdt) may suppress certain proinflammatory genes, it causes similar over-expression of other genes compared with D7S-1, indicating a common factor that still remains in the pathogenicity of A. actinomycetemcomitans.
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Affiliation(s)
- S Mahabady
- Laboratory for Immunoregulation & Tissue Engineering, Ostrow School of Dentistry, University of Southern California, Los Angeles, CA, USA
| | - N Tjokro
- Division of Periodontology, Diagnostic Sciences and Biomedical Sciences, Ostrow School of Dentistry, University of Southern California, Los Angeles, CA, USA
| | - S Aharonian
- Laboratory for Immunoregulation & Tissue Engineering, Ostrow School of Dentistry, University of Southern California, Los Angeles, CA, USA
| | - H H Zadeh
- Laboratory for Immunoregulation & Tissue Engineering, Ostrow School of Dentistry, University of Southern California, Los Angeles, CA, USA
| | - C Chen
- Division of Periodontology, Diagnostic Sciences and Biomedical Sciences, Ostrow School of Dentistry, University of Southern California, Los Angeles, CA, USA
| | - H Allayee
- Institute for Genetic Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - P P Sedghizadeh
- Division of Periodontology, Diagnostic Sciences and Biomedical Sciences, Ostrow School of Dentistry, University of Southern California, Los Angeles, CA, USA
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