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Rattanaprukskul K, Xia XJ, Jiang M, Albuquerque-Souza E, Bandyopadhyay D, Sahingur S. Molecular Signatures of Senescence in Periodontitis: Clinical Insights. J Dent Res 2024; 103:800-808. [PMID: 38877743 PMCID: PMC11308264 DOI: 10.1177/00220345241255325] [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] [Indexed: 06/16/2024] Open
Abstract
Most of the elderly population is afflicted by periodontal diseases, creating a health burden worldwide. Cellular senescence is one of the hallmarks of aging and associated with several chronic comorbidities. Senescent cells produce a variety of deleterious secretions, collectively termed the senescence-associated secretory phenotype (SASP). This disrupts neighboring cells, leading to further senescence propagation and inciting chronic inflammation, known as "inflammaging." Detrimental repercussions within the tissue microenvironment can trigger senescence at a younger age, accelerate biological aging, and drive the initiation or progression of diseases. Here, we investigated the biological signatures of senescence in healthy and diseased gingival tissues by assessing the levels of key senescence markers (p16, lipofuscin, and β-galactosidase) and inflammatory mediators (interleukin [IL]-1β, IL-6, IL-8, matrix metalloproteinase [MMP]-1, MMP-3, and tumor necrosis factor-α). Our results showed significantly increased senescence features including p16, lipofuscin, and β-galactosidase in both epithelial and connective tissues of periodontitis patients compared with healthy sites in all age groups, indicating that an inflammatory microenvironment can trigger senescence-like alterations in younger diseased gingival tissues as well. Subsequent analyses using double staining with specific cell markers noted the enrichment of β-galactosidase in fibroblasts and macrophages. Concurrently, inflammatory mediators consistent with SASP were increased in the gingival biopsies obtained from periodontitis lesions. Together, our findings provide the first clinical report revealing susceptibility to elevated senescence and inflammatory milieu consistent with senescence secretome in gingival tissues, thus introducing senescence as one of the drivers of pathological events in the oral mucosa and a novel strategy for targeted interventions.
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Affiliation(s)
- K. Rattanaprukskul
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Department of Periodontology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - X.-J. Xia
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - M. Jiang
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - E. Albuquerque-Souza
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Lipid Mediator Unit, William Harvey Research Institute, Queen Mary University of London, London, UK
| | - D. Bandyopadhyay
- Department of Biostatistics, School of Population Health, Virginia Commonwealth, Richmond, VA, USA
| | - S.E. Sahingur
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
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Jiang W, Li M, Peng S, Hu T, Long Y, Zhang J, Peng D, Shen Y. Ubiquitin ligase enzymes and de-ubiquitinating enzymes regulate innate immunity in the TLR, NLR, RLR, and cGAS-STING pathways. Immunol Res 2023; 71:800-813. [PMID: 37291329 DOI: 10.1007/s12026-023-09400-5] [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: 12/22/2022] [Accepted: 06/01/2023] [Indexed: 06/10/2023]
Abstract
Ubiquitination (or ubiquitylation) and de-ubiquitination, which are both post-translational modifications (PTMs) of proteins, have become a research hotspot in recent years. Some ubiquitinated or de-ubiquitinated signaling proteins have been found to promote or suppress innate immunity through Toll-like receptor (TLR), RIG-like receptor (RIG-I-like receptor, RLR), NOD-like receptor (NLR), and the cyclic guanosine monophosphate (GMP)-adenosine monophosphate (AMP) synthase (cGAS)-STING pathway. This article aimed to provide a review on the role of ubiquitination and de-ubiquitination, especially ubiquitin ligase enzymes and de-ubiquitinating enzymes, in the above four pathways. We hope that our work can contribute to the research and development of treatment strategies for innate immunity-related diseases such as inflammatory bowel disease.
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Affiliation(s)
- Wang Jiang
- Department of Digestive Diseases, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, 161 Shaoshan Road, Changsha City, 410000, People's Republic of China
| | - Mengling Li
- Department of Digestive Diseases, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, 161 Shaoshan Road, Changsha City, 410000, People's Republic of China
| | - Siyuan Peng
- Department of Digestive Diseases, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, 161 Shaoshan Road, Changsha City, 410000, People's Republic of China
| | - Tian Hu
- Department of Digestive Diseases, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, 161 Shaoshan Road, Changsha City, 410000, People's Republic of China
| | - Yan Long
- Department of Digestive Diseases, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, 161 Shaoshan Road, Changsha City, 410000, People's Republic of China
| | - Jiayi Zhang
- Department of Digestive Diseases, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, 161 Shaoshan Road, Changsha City, 410000, People's Republic of China
| | - Dan Peng
- Department of Digestive Diseases, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, 161 Shaoshan Road, Changsha City, 410000, People's Republic of China
| | - Yueming Shen
- Department of Digestive Diseases, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, 161 Shaoshan Road, Changsha City, 410000, People's Republic of China.
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Li M, Zhang Y, Zhang A, Cai H, Zhang R, Cheng R, Hu T. Association between polymorphisms of anti-inflammatory gene alleles and periodontitis risk in a Chinese Han population. Clin Oral Investig 2023; 27:6689-6700. [PMID: 37775583 DOI: 10.1007/s00784-023-05278-7] [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: 03/14/2023] [Accepted: 09/23/2023] [Indexed: 10/01/2023]
Abstract
OBJECTIVE Cytokines that mediate the immune responses are important in the pathogenesis of periodontitis. The genetic polymorphisms of IL-10, TNFAIP3 (A20), and NF-κB1 (p105/p50) and their association with the risk of periodontitis were investigated. METHOD Venous blood from 102 clinical periodontal healthy participants and 100 patients with periodontitis was collected to genotype the IL-10 (rs1800872), A20 (rs2230926, rs5029937, rs6927127), and NF-κB1 (rs28362491) SNP loci by Sanger technology. Univariable and multivariable logic regression and path analysis model was used to analyze the genotypes and alleles. RESULT Single-gene mutations in the A20 (rs2230926, rs5029937, rs6927127) and IL-10 (rs1800872) genes were not associated with the risk of periodontitis. NF-κΒ1 (rs28362491) gene influenced periodontitis susceptibility by affecting CAL. The combined effect of A20 and IL-10 was related to the risk of periodontitis (ORa = 0.123-0.151). One site mutated in the A20 (rs2230926, rs5029937, rs6927127) gene or IL-10 (rs1800872) gene reduced the risk of periodontitis. CONCLUSION Single gene polymorphisms in A20 and IL-10 genes were not associated with the risk of periodontitis. NF-κB1 gene polymorphism indirectly affects susceptibility to periodontitis. The combined effect of anti-inflammatory gene polymorphisms (A20 and IL-10) correlated with the decreased risk of periodontitis. CLINICAL RELEVANCE This study helps to explore the potential mechanisms underlying the role of anti-inflammatory genes in the progression of periodontal disease and provides a basis for the selection and development of appropriate periodontal treatment strategies based on the genetic profile of the patient.
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Affiliation(s)
- Mingming Li
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Frontier Innovation Center for Dental Medicine Plus, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Yuhan Zhang
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Frontier Innovation Center for Dental Medicine Plus, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Aopeng Zhang
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Frontier Innovation Center for Dental Medicine Plus, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China
| | - He Cai
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Frontier Innovation Center for Dental Medicine Plus, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Rui Zhang
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Frontier Innovation Center for Dental Medicine Plus, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Ran Cheng
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Frontier Innovation Center for Dental Medicine Plus, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China.
| | - Tao Hu
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Frontier Innovation Center for Dental Medicine Plus, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China.
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Recent Clinical Treatment and Basic Research on the Alveolar Bone. Biomedicines 2023; 11:biomedicines11030843. [PMID: 36979821 PMCID: PMC10044990 DOI: 10.3390/biomedicines11030843] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 03/07/2023] [Accepted: 03/07/2023] [Indexed: 03/12/2023] Open
Abstract
The periodontal ligament is located between the bone (alveolar bone) and the cementum of the tooth, and it is connected by tough fibers called Sharpey’s fibers. To maintain healthy teeth, the foundation supporting the teeth must be healthy. Periodontal diseases, also known as tooth loss, cause the alveolar bone to dissolve. The alveolar bone, similar to the bones in other body parts, is repeatedly resorbed by osteoclasts and renewed by osteogenic cells. This means that an old bone is constantly being resorbed and replaced by a new bone. In periodontal diseases, the alveolar bone around the teeth is absorbed, and as the disease progresses, the alveolar bone shrinks gradually. In most cases, the resorbed alveolar bone does not return to its original form even after periodontal disease is cured. Gum covers the tooth surface so that it matches the shape of the resorbed alveolar bone, exposing more of the tooth surface than before, making the teeth look longer, leaving gaps between the teeth, and in some cases causing teeth to sting. Previously, the only treatment for periodontal diseases was to stop the disease from progressing further before the teeth fell out, and restoration to the original condition was almost impossible. However, a treatment method that can help in the regeneration of the supporting tissues of the teeth destroyed by periodontal diseases and the restoration of the teeth to their original healthy state as much as possible is introduced. Recently, with improvements in implant material properties, implant therapy has become an indispensable treatment method in dentistry and an important prosthetic option. Treatment methods and techniques, which are mainly based on experience, have gradually accumulated scientific evidence, and the number of indications for treatment has increased. The development of bone augmentation methods has contributed remarkably to the expansion of indications, and this has been made possible by various advances in materials science. The induced pluripotent stem cell (iPS) cell technology for regenerating periodontal tissues, including alveolar bone, is expected to be applied in the treatment of diseases, such as tooth loss and periodontitis. This review focuses on the alveolar bone and describes clinical practice, techniques, and the latest basic research.
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Sun Q, Zhang X, Fan J, Zhang L, Ji H, Xue J, Zhang C, Chen R, Zhao J, Chen J, Liu X, Song D. Geniposide protected against cerebral ischemic injury through the anti-inflammatory effect via the NF-κB signaling pathway. Transl Neurosci 2023; 14:20220273. [PMID: 37333874 PMCID: PMC10276575 DOI: 10.1515/tnsci-2022-0273] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 01/06/2023] [Accepted: 01/17/2023] [Indexed: 06/20/2023] Open
Abstract
Context Accumulated evidence indicates that geniposide exhibits neuroprotective effects in ischemic stroke. However, the potential targets of geniposide remain unclear. Objective We explore the potential targets of geniposide in ischemic stroke. Materials and methods Adult male C57BL/6 mice were subjected to the middle cerebral artery occlusion (MCAO) model. Mice were randomly divided into five groups: Sham, MCAO, and geniposide-treated (i.p. twice daily for 3 days before MCAO) at doses of 25, 75, or 150 mg/kg. We first examined the neuroprotective effects of geniposide. Then, we further explored via biological information analysis and verified the underlying mechanism in vivo and in vitro. Results In the current study, geniposide had no toxicity at concentrations of up to 150 mg/kg. Compared with the MCAO group, the 150 mg/kg group of geniposide significantly (P < 0.05) improved neurological deficits, brain edema (79.00 ± 0.57% vs 82.28 ± 0.53%), and infarct volume (45.10 ± 0.24% vs 54.73 ± 2.87%) at 24 h after MCAO. Biological information analysis showed that the protective effect was closely related to the inflammatory response. Geniposide suppressed interleukin-6 (IL-6) and inducible nitric oxide synthase (iNOS) expression in the brain homogenate, as measured by enzyme-linked immunosorbent assay (ELISA). Geniposide upregulated A20 and downregulated TNF receptor-associated factor-6 and nuclear factor kappa-B phosphorylation in the MCAO model and lipopolysaccharide-treated BV2 cells at 100 μM. Conclusions Geniposide exhibited a neuroprotective effect via attenuating inflammatory response, as indicated by biological information analysis, in vivo and in vitro experiments, which may provide a potential direction for the application of geniposide in the treatment of ischemic stroke.
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Affiliation(s)
- Qian Sun
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China
- Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease and Hebei Key Laboratory of Vascular Homeostasis, Shijiazhuang, Hebei, China
| | - Xiangjian Zhang
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China
- Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease and Hebei Key Laboratory of Vascular Homeostasis, Shijiazhuang, Hebei, China
| | - Jingyi Fan
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China
- Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease and Hebei Key Laboratory of Vascular Homeostasis, Shijiazhuang, Hebei, China
| | - Lan Zhang
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China
- Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease and Hebei Key Laboratory of Vascular Homeostasis, Shijiazhuang, Hebei, China
| | - Hui Ji
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China
- Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease and Hebei Key Laboratory of Vascular Homeostasis, Shijiazhuang, Hebei, China
| | - Jing Xue
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China
- Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease and Hebei Key Laboratory of Vascular Homeostasis, Shijiazhuang, Hebei, China
| | - Cong Zhang
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China
- Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease and Hebei Key Laboratory of Vascular Homeostasis, Shijiazhuang, Hebei, China
| | - Rong Chen
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China
- Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease and Hebei Key Laboratory of Vascular Homeostasis, Shijiazhuang, Hebei, China
| | - Jing Zhao
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China
- Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease and Hebei Key Laboratory of Vascular Homeostasis, Shijiazhuang, Hebei, China
| | - Junmin Chen
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China
- Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease and Hebei Key Laboratory of Vascular Homeostasis, Shijiazhuang, Hebei, China
| | - Xiaoxia Liu
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China
- Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease and Hebei Key Laboratory of Vascular Homeostasis, Shijiazhuang, Hebei, China
| | - Degang Song
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China
- Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease and Hebei Key Laboratory of Vascular Homeostasis, Shijiazhuang, Hebei, China
- Department of Neurology, First Hospital of Qinhuangdao, Hebei, China
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Hou L, Ye Y, Gou H, Tang H, Zhou Y, Xu X, Xu Y. A20 inhibits periodontal bone resorption and NLRP3-mediated M1 macrophage polarization. Exp Cell Res 2022; 418:113264. [PMID: 35714941 DOI: 10.1016/j.yexcr.2022.113264] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 06/06/2022] [Accepted: 06/12/2022] [Indexed: 11/26/2022]
Abstract
A20 is involved in inflammation and bone metabolism in periodontitis. Regulation of macrophage polarization may be an effective target for periodontitis treatment, and A20 has a regulatory role in macrophage polarization. This study aimed to explore the effects of A20 on macrophage polarization in periodontitis and the underlying mechanism. Adeno-associated virus (AAV) targeting A20 was exploited to achieve A20 knockdown or overexpression in periodontal tissues of mice with experimental periodontitis. The (AAV-A20-RNAi) +P group showed increased alveolar bone resorption when compared with PBS + P and CON305 + P groups. However, the degree of bone destruction was reduced in the (AAV-A20) +P group relative to PBS + P and CON299 + P groups. A20 knockdown resulted in enhanced inducible nitric oxide synthase (iNOS) expression and decreased CD206 expression in mice periodontal tissues. In addition, higher levels of M1 macrophage polarization markers (iNOS, CD86, TNF-α) and lower CD206 expression were found in THP-1 cells treated with lipopolysaccharide (LPS) from Porphyromonas gingivalis (P. gingivalis) (Pg. LPS) and interferon-γ (IFN-γ) when A20 was silenced. A20 overexpression showed opposite effects on macrophage polarization in vivo and in vitro. Knockdown of A20 was correlated with upregulation of the NLRP3 inflammasome pathway in mice periodontal tissues or THP-1 cells. On the contrary, A20 overexpression inhibited the NLRP3 inflammasome pathway. MCC950 suppressed M1 macrophage polarization aggravated through A20 knockdown in Pg. LPS and IFN-γ stimulated cells. Our data suggested that A20 inhibits periodontal bone resorption and NLRP3-mediated M1 macrophage polarization; A20 is expected to be a novel target for the treatment of periodontitis.
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Affiliation(s)
- Liguang Hou
- Department of Periodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China; Jiangsu Province Key Laboratory of Oral Diseases, Nanjing, China; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China.
| | - Yu Ye
- Department of Periodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China; Jiangsu Province Key Laboratory of Oral Diseases, Nanjing, China; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China.
| | - Huiqing Gou
- Department of Periodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China; Jiangsu Province Key Laboratory of Oral Diseases, Nanjing, China; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China.
| | - Hui Tang
- Department of Periodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China; Jiangsu Province Key Laboratory of Oral Diseases, Nanjing, China; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China.
| | - Yi Zhou
- Department of Periodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China; Jiangsu Province Key Laboratory of Oral Diseases, Nanjing, China; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China.
| | - Xuanwen Xu
- Department of Periodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China; Jiangsu Province Key Laboratory of Oral Diseases, Nanjing, China; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China.
| | - Yan Xu
- Department of Periodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China; Jiangsu Province Key Laboratory of Oral Diseases, Nanjing, China; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China.
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Han X, Ren J, Lohner H, Yakoumatos L, Liang R, Wang H. SGK1 negatively regulates inflammatory immune responses and protects against alveolar bone loss through modulation of TRAF3 activity. J Biol Chem 2022; 298:102036. [PMID: 35588785 PMCID: PMC9190018 DOI: 10.1016/j.jbc.2022.102036] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 05/09/2022] [Accepted: 05/10/2022] [Indexed: 12/05/2022] Open
Abstract
Serum- and glucocorticoid-regulated kinase 1 (SGK1) is a serine/threonine kinase that plays important roles in the cellular stress response. While SGK1 has been reported to restrain inflammatory immune responses, the molecular mechanisms involved remain elusive, especially in oral bacteria-induced inflammatory milieu. Here, we found that SGK1 curtails Porphyromonas gingivalis-induced inflammatory responses through maintaining levels of tumor necrosis factor receptor-associated factor (TRAF) 3, thereby suppressing NF-κB signaling. Specifically, SGK1 inhibition significantly enhances production of proinflammatory cytokines, including tumor necrosis factor α, interleukin (IL)-6, IL-1β, and IL-8 in P. gingivalis-stimulated innate immune cells. The results were confirmed with siRNA and LysM-Cre-mediated SGK1 KO mice. Moreover, SGK1 deletion robustly increased NF-κB activity and c-Jun expression but failed to alter the activation of mitogen-activated protein kinase signaling pathways. Further mechanistic data revealed that SGK1 deletion elevates TRAF2 phosphorylation, leading to TRAF3 degradation in a proteasome-dependent manner. Importantly, siRNA-mediated traf3 silencing or c-Jun overexpression mimics the effect of SGK1 inhibition on P. gingivalis-induced inflammatory cytokines and NF-κB activation. In addition, using a P. gingivalis infection-induced periodontal bone loss model, we found that SGK1 inhibition modulates TRAF3 and c-Jun expression, aggravates inflammatory responses in gingival tissues, and exacerbates alveolar bone loss. Altogether, we demonstrated for the first time that SGK1 acts as a rheostat to limit P. gingivalis-induced inflammatory immune responses and mapped out a novel SGK1-TRAF2/3-c-Jun-NF-κB signaling axis. These findings provide novel insights into the anti-inflammatory molecular mechanisms of SGK1 and suggest novel interventional targets to inflammatory diseases relevant beyond the oral cavity.
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Affiliation(s)
- Xiao Han
- Department of Oral and Craniofacial Molecular Biology, VCU Philips Institute for Oral Health Research, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Junling Ren
- Department of Oral and Craniofacial Molecular Biology, VCU Philips Institute for Oral Health Research, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Hannah Lohner
- Department of Oral and Craniofacial Molecular Biology, VCU Philips Institute for Oral Health Research, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Lan Yakoumatos
- Department of Oral Immunology and Infectious Diseases, University of Louisville, Louisville, Kentucky, USA
| | - Ruqiang Liang
- Department of Biochemistry and Molecular Medicine, University of California, Davis, Davis, California, USA
| | - Huizhi Wang
- Department of Oral and Craniofacial Molecular Biology, VCU Philips Institute for Oral Health Research, Virginia Commonwealth University, Richmond, Virginia, USA.
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Li X, Wang C, Wang L, Huang R, Li WC, Wang X, Wong SSW, Cai Z, Leung KCF, Jin L. A glutathione-responsive silica-based nanosystem capped with in-situ polymerized cell-penetrating poly(disulfide)s for precisely modulating immuno-inflammatory responses. J Colloid Interface Sci 2022; 614:322-336. [PMID: 35104706 DOI: 10.1016/j.jcis.2022.01.091] [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: 09/29/2021] [Revised: 01/14/2022] [Accepted: 01/15/2022] [Indexed: 01/02/2023]
Abstract
HYPOTHESIS Precise modulation of immuno-inflammatory response is crucial to control periodontal diseases and related systemic comorbidities. The present nanosystem with the controlled-release and cell-penetrating manner enhances the inflammation modulation effects of baicalein in human gingival epithelial cells (hGECs) for better oral healthcare. EXPERIMENTS We constructed a red-emissive mesoporous silica nanoparticle-based nanosystem with cell-penetrating poly(disulfide) (CPD) capping, through a facile in-situ polymerization approach. It was featured with a glutathione-responsive manner and instant cellular internalization capacity for precisely delivering baicalein intracellularly. Laboratory experiments assessed whether and how the nanosystem per se with the delivered baicalein could modulate immuno-inflammatory responses in hGECs. FINDINGS The in-situ polymerized CPD layer capped the nanoparticles and yet controlled the release of baicalein in a glutathione-responsive manner. The CPD coating could facilitate cellular internalization of the nanosystem via endocytosis and thiol-mediated approaches. Notably, the intracellularly released baicalein effectively downregulated the expression of pro-inflammatory cytokines through inhibiting the NF-κB signaling pathway. The nanosystem per se could modulate immuno-inflammatory responses by passivating the cellular response to interlukin-1β. This study highlights that the as-synthesized nanosystem may serve as a novel multi-functional vehicle to modulate innate host response via targeting the NF-κB pathway for precision healthcare.
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Affiliation(s)
- Xuan Li
- Faculty of Dentistry, The University of Hong Kong, 34 Hospital Road, Hong Kong Special Administrative Region, China
| | - Chuan Wang
- Faculty of Dentistry, The University of Hong Kong, 34 Hospital Road, Hong Kong Special Administrative Region, China
| | - Leilei Wang
- Faculty of Dentistry, The University of Hong Kong, 34 Hospital Road, Hong Kong Special Administrative Region, China
| | - Regina Huang
- Faculty of Dentistry, The University of Hong Kong, 34 Hospital Road, Hong Kong Special Administrative Region, China
| | - Wai-Chung Li
- Department of Chemistry, State Key Laboratory of Environmental and Biological Analysis, The Hong Kong Baptist University, Hong Kong Special Administrative Region, China
| | - Xinna Wang
- Tissue Engineering Laboratory, Department of Mechanical Engineering, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | | | - Zongwei Cai
- Department of Chemistry, State Key Laboratory of Environmental and Biological Analysis, The Hong Kong Baptist University, Hong Kong Special Administrative Region, China
| | - Ken Cham-Fai Leung
- Department of Chemistry, State Key Laboratory of Environmental and Biological Analysis, The Hong Kong Baptist University, Hong Kong Special Administrative Region, China.
| | - Lijian Jin
- Faculty of Dentistry, The University of Hong Kong, 34 Hospital Road, Hong Kong Special Administrative Region, China.
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Mooney EC, Holden SE, Xia XJ, Li Y, Jiang M, Banson CN, Zhu B, Sahingur SE. Quercetin Preserves Oral Cavity Health by Mitigating Inflammation and Microbial Dysbiosis. Front Immunol 2021; 12:774273. [PMID: 34899728 PMCID: PMC8663773 DOI: 10.3389/fimmu.2021.774273] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Accepted: 11/08/2021] [Indexed: 11/21/2022] Open
Abstract
Failure to attenuate inflammation coupled with consequent microbiota changes drives the development of bone-destructive periodontitis. Quercetin, a plant-derived polyphenolic flavonoid, has been linked with health benefits in both humans and animals. Using a systematic approach, we investigated the effect of orally delivered Quercetin on host inflammatory response, oral microbial composition and periodontal disease phenotype. In vivo, quercetin supplementation diminished gingival cytokine expression, inflammatory cell infiltrate and alveolar bone loss. Microbiome analyses revealed a healthier oral microbial composition in Quercetin-treated versus vehicle-treated group characterized by reduction in the number of pathogenic species including Enterococcus, Neisseria and Pseudomonas and increase in the number of non-pathogenic Streptococcus sp. and bacterial diversity. In vitro, Quercetin diminished inflammatory cytokine production through modulating NF-κB:A20 axis in human macrophages following challenge with oral bacteria and TLR agonists. Collectively, our findings reveal that Quercetin supplement instigates a balanced periodontal tissue homeostasis through limiting inflammation and fostering an oral cavity microenvironment conducive of symbiotic microbiota associated with health. This proof of concept study provides key evidence for translational studies to improve overall health.
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Affiliation(s)
- Erin C. Mooney
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States
- Department of Human and Molecular Genetics, School of Medicine, Virginia Commonwealth University, Richmond, VA, United States
| | - Sara E. Holden
- Department of Periodontics, School of Dentistry, Virginia Commonwealth University, Richmond, VA, United States
| | - Xia-Juan Xia
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Yajie Li
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Min Jiang
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Camille N. Banson
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Bin Zhu
- Department of Microbiology and Immunology, School of Medicine, Virginia Commonwealth University, Richmond, VA, United States
| | - Sinem Esra Sahingur
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States
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10
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Huang N, Dong H, Luo Y, Shao B. Th17 Cells in Periodontitis and Its Regulation by A20. Front Immunol 2021; 12:742925. [PMID: 34557201 PMCID: PMC8453085 DOI: 10.3389/fimmu.2021.742925] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Accepted: 08/23/2021] [Indexed: 02/05/2023] Open
Abstract
Periodontitis is a prevalent chronic disease that results in loss of periodontal ligament and bone resorption. Triggered by pathogens and prolonged inflammation, periodontitis is modulated by the immune system, especially pro-inflammatory cells, such as T helper (Th) 17 cells. Originated from CD4+ Th cells, Th17 cells play a central role for they drive and regulate periodontal inflammation. Cytokines secreted by Th17 cells are also major players in the pathogenesis of periodontitis. Given the importance of Th17 cells, modulators of Th17 cells are of great clinical potential and worth of discussion. This review aims to provide an overview of the current understanding of the effect of Th17 cells on periodontitis, as well as a brief discussion of current and potential therapies targeting Th17 cells. Lastly, we highlight this article by summarizing the causal relationship between A20 (encoded by TNFAIP3), an anti-inflammatory molecule, and Th17 cell differentiation.
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Affiliation(s)
- Ning Huang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Hao Dong
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yuqi Luo
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Bin Shao
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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11
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Lin P, Niimi H, Ohsugi Y, Tsuchiya Y, Shimohira T, Komatsu K, Liu A, Shiba T, Aoki A, Iwata T, Katagiri S. Application of Ligature-Induced Periodontitis in Mice to Explore the Molecular Mechanism of Periodontal Disease. Int J Mol Sci 2021; 22:ijms22168900. [PMID: 34445604 PMCID: PMC8396362 DOI: 10.3390/ijms22168900] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/07/2021] [Accepted: 08/10/2021] [Indexed: 02/06/2023] Open
Abstract
Periodontitis is an inflammatory disease characterized by the destruction of the periodontium. In the last decade, a new murine model of periodontitis has been widely used to simulate alveolar bone resorption and periodontal soft tissue destruction by ligation. Typically, 3-0 to 9-0 silks are selected for ligation around the molars in mice, and significant bone loss and inflammatory infiltration are observed within a week. The ligature-maintained period can vary according to specific aims. We reviewed the findings on the interaction of systemic diseases with periodontitis, periodontal tissue destruction, the immunological and bacteriological responses, and new treatments. In these studies, the activation of osteoclasts, upregulation of pro-inflammatory factors, and excessive immune response have been considered as major factors in periodontal disruption. Multiple genes identified in periodontal tissues partly reflect the complexity of the pathogenesis of periodontitis. The effects of novel treatment methods on periodontitis have also been evaluated in a ligature-induced periodontitis model in mice. This model cannot completely represent all aspects of periodontitis in humans but is considered an effective method for the exploration of its mechanisms. Through this review, we aimed to provide evidence and enlightenment for future studies planning to use this model.
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Affiliation(s)
- Peiya Lin
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
| | - Hiromi Niimi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
- Correspondence: (H.N.); (Y.O.); Tel.: +81-3-5803-5488 (H.N. & Y.O.)
| | - Yujin Ohsugi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
- Correspondence: (H.N.); (Y.O.); Tel.: +81-3-5803-5488 (H.N. & Y.O.)
| | - Yosuke Tsuchiya
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
| | - Tsuyoshi Shimohira
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
| | - Keiji Komatsu
- Department of Lifetime Oral Health Care Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan;
| | - Anhao Liu
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
| | - Takahiko Shiba
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
| | - Akira Aoki
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
| | - Takanori Iwata
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
| | - Sayaka Katagiri
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
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12
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Deng HJ, Deji Q, Zhaba W, Liu JQ, Gao SQ, Han YL, Zhou ML, Wang CX. A20 Establishes Negative Feedback With TRAF6/NF-κB and Attenuates Early Brain Injury After Experimental Subarachnoid Hemorrhage. Front Immunol 2021; 12:623256. [PMID: 34381441 PMCID: PMC8350325 DOI: 10.3389/fimmu.2021.623256] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 04/09/2021] [Indexed: 11/13/2022] Open
Abstract
Nuclear factor (NF)-κB-ty -50mediated neuroinflammation plays a crucial role in early brain injury (EBI) after subarachnoid hemorrhage (SAH). As an important negative feedback regulator of NF-κB, A20 is essential for inflammatory homeostasis. Herein, we tested the hypothesis that A20 attenuates EBI by establishing NF-κB-associated negative feedback after experimental SAH. In vivo and in vitro models of SAH were established. TPCA-1 and lentivirus were used for NF-κB inhibition and A20 silencing/overexpression, respectively. Cellular localization of A20 in the brain was determined via immunofluorescence. Western blotting and enzyme-linked immunosorbent assays were applied to observe the expression of members of the A20/tumor necrosis factor receptor-associated factor 6 (TRAF6)/NF-κB pathway and inflammatory cytokines (IL-6, IL-1β, TNF-α). Evans blue staining, TUNEL staining, Nissl staining, brain water content, and modified Garcia score were performed to evaluate the neuroprotective effect of A20. A20 expression by astrocytes, microglia, and neurons was increased at 24 h after SAH. A20 and inflammatory cytokine levels were decreased while TRAF6 expression was elevated after NF-κB inhibition. TRAF6, NF-κB, and inflammatory cytokine levels were increased after A20 silencing but suppressed with A20 overexpression. Also, Bcl-2, Bax, MMP-9, ZO-1 protein levels; Evans blue, TUNEL, and Nissl staining; brain water content; and modified Garcia score showed that A20 exerted a neuroprotective effect after SAH. A20 expression was regulated by NF-κB. In turn, increased A20 expression inhibited TRAF6 and NF-κB to reduce the subsequent inflammatory response. Our data also suggest that negative feedback regulation mechanism of the A20/TRAF6/NF-κB pathway and the neuroprotective role of A20 to attenuate EBI after SAH.
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Affiliation(s)
- Hong-Ji Deng
- Department of Neurosurgery, The First Affiliated Hospital, Guangxi Medical University, Nanning, China
| | - QuZhen Deji
- Department of Ophthalmology, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - WangDui Zhaba
- Department of Neurosurgery, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Jia-Qiang Liu
- Department of Neurosurgery, Yijishan Hospital, Wannan Medical College, Wuhu, China
| | - Sheng-Qing Gao
- Department of Neurosurgery, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Yan-Ling Han
- Department of Neurosurgery, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Meng-Liang Zhou
- Department of Neurosurgery, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Chun-Xi Wang
- Department of Neurosurgery, The First Affiliated Hospital, Guangxi Medical University, Nanning, China
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13
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Expression of deubiquitinases in human gingiva and cultured human gingival fibroblasts. BMC Oral Health 2021; 21:290. [PMID: 34092220 PMCID: PMC8180082 DOI: 10.1186/s12903-021-01655-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 05/29/2021] [Indexed: 12/11/2022] Open
Abstract
Background Although deubiquitinating enzymes (DUBs) such as CYLD, A20 and OTULIN are expressed in multiple tissues and thought to be linked with inflammatory diseases, their expression in periodontal tissues remains to be determined. This research was designed to assess the expression of CYLD, A20 and OTULIN in human gingiva, and to evaluate the regulation of these DUBs in human gingival fibroblasts (HGFs) upon different stimuli. Methods Immunohistochemistry assay was conducted to determine the expression of CYLD, A20 and OTULIN in human gingiva. Immunofluorescence assay was employed to observe the protein expression of CYLD, A20 and OTULIN in HGFs. RT-PCR and western blots were carried out to assess gene and protein expression changes of these DUBs in HGFs upon LPS or TNF-α. Results CYLD, A20 and OTULIN were found to be expressed in human gingiva and HGFs. The expression of CYLD, A20 and OTULIN was lower in the inflamed gingival tissue samples compared with the healthy gingival tissue samples. Further, the expression of CYLD, A20 and OTULIN in HGFs exhibited distinct regulation by different stimuli. TNF-α treatment markedly increased NF-κB activation in HGFs Conclusions Our findings suggest that CYLD, A20 and OTULIN might play a role in the progression of periodontitis. Supplementary Information The online version contains supplementary material available at 10.1186/s12903-021-01655-4.
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14
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Pu T, Liu W, Wu Y, Zhao Y. A20 functions as a negative regulator in macrophage for DSS-induced colitis. Int Immunopharmacol 2021; 97:107804. [PMID: 34062371 DOI: 10.1016/j.intimp.2021.107804] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 04/13/2021] [Accepted: 05/19/2021] [Indexed: 10/21/2022]
Abstract
The function of A20 as a deubiquitinating enzyme in inflammatory diseases and autoimmune diseases has been reported, we therefore aimed to investigate the potential effects of A20 in macrophages and dextran sodium sulfate (DSS)-induced colitis mouse model. Colitis mouse model was induced by DSS treatment. Tnfaip3fl/fl mice were crossed with Lyz2-Cre mice to generate A20 myeloid cell-conditional knockout mice. The expression levels of indicated cytokines were analyzed by quantitative reverse transcriptase real-time polymerase chain reaction and enzyme-linked immunosorbent assay. Phosphorylated and total protein levels in nuclear factor kappa B (NF-κB) signaling pathway were detected by Western blot. In the bone marrow of mice, A20 deficiency did not affect macrophage development. In bone marrow-derived macrophages (BMDMs) after lipopolysaccharide (LPS) treatment, A20 deficiency enhanced pro-inflammatory cytokine expression. A20 deficiency in macrophages led to severe symptoms of DSS-induced colitis in mice. A20 deficiency enhanced the NF-κB signaling pathway activity in BMDMs. The effects of A20 deficiency in DSS-induced colitis were suppressed by NF-κB pathway inhibition. A20/inhibitor of NF-κB kinase 2 (IKKβ)-double knockout mice were resistant to DSS-induced colitis. A20 suppresses pro-inflammatory cytokine expression in macrophages through the NF-κB signal pathway and alleviates the pathogenesis of DSS-induced colitis in mice.
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Affiliation(s)
- Tian Pu
- Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Zhengzhou 450052, Henan, China
| | - Wenzheng Liu
- Department of Gastroenterology, Peking University Third Hospital, No. 49 Huayuan North Road, Beijing 100191, China
| | - Yijun Wu
- Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Zhengzhou 450052, Henan, China
| | - Ye Zhao
- Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Zhengzhou 450052, Henan, China.
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15
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Sun W, Dong S, Lu H, Wang N, Zhao Y, An J, Sun L, Lu D. Beclin-1 overexpression regulates NLRP3 activation by promoting TNFAIP3 in microvascular injury following myocardial reperfusion. Cell Signal 2021; 84:110008. [PMID: 33848581 DOI: 10.1016/j.cellsig.2021.110008] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Revised: 04/04/2021] [Accepted: 04/08/2021] [Indexed: 11/26/2022]
Abstract
Innate immune response contributes significantly to ischemia reperfusion (I/R) injury. Targeting innate immunity seems to be a promising method for protecting the microvascular injury in ST-elevation myocardial infarction (STEMI) patients following myocardial I/R injury (MI/R). NLRP3 inflammasome is a central part of the innate immune system involved in the pathophysiological process of MI/R. However, the mechanisms regulating NLRP3 activation are yet to be clarified. Recently, autophagy has been related to the regulation of NLRP3 activation. Thus, how Beclin-1/Becn1 overexpression influences NLRP3 activation in microvascular endothelial cells (CMECs) after MI/R is yet to be investigated. The present study showed that Becn1 overexpression exhibits a significant increase in NLRP3 and IL-1β in CMEC responses to MI/R. Interestingly, Becn1 overexpression promoted TNFAIP3 expression, which restricted NLRP3 activation in vitro and in vivo. The current study also showed that inflammatory cells (CD68) and B (CDB220) lymphocytes were decreased in transgenic mice with overexpression of Beclin-1 (BECN1-Tg) in the spleen and heart. These findings highlighted Becn1 as a prospective target for treating NLRP3 mediated microvascular injury following MI/R.
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Affiliation(s)
- Wenjing Sun
- Department of Cardiology, Henan Provincial People's Hospital, Zhengzhou 450000, China
| | - Shujuan Dong
- Department of Cardiology, Henan Provincial People's Hospital, Zhengzhou 450000, China
| | - Hongquan Lu
- Department of Nuclear Medicine, Third People's Hospital of Honghe State, Honghe 661000, China
| | - Nan Wang
- Department of Technology Transfer Center, Kunming Medical University, Kunming 650500, China
| | - Yu Zhao
- Department of Technology Transfer Center, Kunming Medical University, Kunming 650500, China
| | - Jingshuo An
- Department of Technology Transfer Center, Kunming Medical University, Kunming 650500, China
| | - Lin Sun
- Department of Cardiology, the Second Affiliated Hospital of Kunming Medical University, Kunming 650501, China.
| | - Di Lu
- Department of Technology Transfer Center, Kunming Medical University, Kunming 650500, China.
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16
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Bale S, Varga J, Bhattacharyya S. Role of RP105 and A20 in negative regulation of toll-like receptor activity in fibrosis: potential targets for therapeutic intervention. AIMS ALLERGY AND IMMUNOLOGY 2021. [DOI: 10.3934/allergy.2021009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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17
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Abstract
Inflammation is triggered by stimulation of innate sensors that recognize pathogens, chemical and physical irritants, and damaged cells subsequently initiating a well-orchestrated adaptive immune response. Immune cell activation is a strictly regulated and self-resolving process supported by an array of negative feedback mechanisms to sustain tissue homeostasis. The disruption of these regulatory pathways forms the basis of chronic inflammatory diseases, including periodontitis. Ubiquitination, a covalent posttranslational modification of target proteins with ubiquitin, has a profound effect on the stability and activity of its substrates, thereby regulating the immune system at molecular and cellular levels. Through the cooperative actions of E3 ubiquitin ligases and deubiquitinases, ubiquitin modifications are implicated in several biological processes, including proteasomal degradation, transcriptional regulation, regulation of protein-protein interactions, endocytosis, autophagy, DNA repair, and cell cycle regulation. A20 (tumor necrosis factor α-induced protein 3 or TNFAIP3) is a ubiquitin-editing enzyme that mainly functions as an endogenous regulator of inflammation through termination of nuclear factor (NF)-κB activation as part of a negative feedback loop. A20 interacts with substrates that reside downstream of immune sensors, including Toll-like receptors, nucleotide-binding oligomerization domain-containing receptors, lymphocyte receptors, and cytokine receptors. Due to its pleiotropic functions as a ubiquitin binding protein, deubiquitinase and ubiquitin ligase, and its versatile role in various signaling pathways, aberrant A20 levels are associated with numerous conditions such as rheumatoid arthritis, diabetes, systemic lupus erythematosus, inflammatory bowel disease, psoriasis, Sjögren syndrome, coronary artery disease, multiple sclerosis, cystic fibrosis, asthma, cancer, neurological disorders, and aging-related sequelae. Similarly, A20 has recently been implicated as an essential regulator of inflammation in the oral cavity. This review presents information on the ubiquitin system and regulation of NF-κB by ubiquitination using A20 as a representative molecule and highlights how the dysregulation of this system can lead to several immune pathologies, including oral cavity-related disorders mainly focusing on periodontitis.
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Affiliation(s)
- E.C. Mooney
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Philips Institute for Oral Health Research, Virginia Commonwealth University, School of Dentistry, Richmond, VA, USA
| | - S.E. Sahingur
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
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18
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Lü L, Yakoumatos L, Ren J, Duan X, Zhou H, Gu Z, Mohammed M, Uriarte SM, Liang S, Scott DA, Lamont RJ, Wang H. JAK3 restrains inflammatory responses and protects against periodontal disease through Wnt3a signaling. FASEB J 2020; 34:9120-9140. [PMID: 32433819 DOI: 10.1096/fj.201902697rr] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 04/07/2020] [Accepted: 04/21/2020] [Indexed: 12/14/2022]
Abstract
Homeostasis between pro- and anti- inflammatory responses induced by bacteria is critical for the maintenance of health. In the oral cavity, pro-inflammatory mechanisms induced by pathogenic bacteria are well-established; however, the anti-inflammatory responses that act to restrain innate responses remain poorly characterized. Here, we demonstrate that infection with the periodontal pathogen Porphyromonas gingivalis enhances the activity of Janus kinase 3 (JAK3) in innate immune cells, and subsequently phospho-inactivates Nedd4-2, an ubiquitin E3 ligase. In turn, Wingless-INT (Wnt) 3 (Wnt3) ubiquitination is decreased, while total protein levels are enhanced, leading to a reduction in pro-inflammatory cytokine levels. In contrast, JAK3 or Wnt3a inhibition robustly enhances nuclear factor kappa-light-chain-enhancer of activated B cells activity and the production of pro-inflammatory cytokines in P. gingivalis-stimulated innate immune cells. Moreover, using gain- and loss-of-function approaches, we demonstrate that downstream molecules of Wnt3a signaling, including Dvl3 and β-catenin, are responsible for the negative regulatory role of Wnt3a. In addition, using an in vivo P. gingivalis-mediated periodontal disease model, we show that JAK3 inhibition enhances infiltration of inflammatory cells, reduces expression of Wnt3a and Dvl3 in P. gingivalis-infected gingival tissues, and increases disease severity. Together, our results reveal a new anti-inflammatory role for JAK3 in innate immune cells and show that the underlying signaling pathway involves Nedd4-2-mediated Wnt3a ubiquitination.
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Affiliation(s)
- Lanhai Lü
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY, USA.,Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, USA
| | - Lan Yakoumatos
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY, USA
| | - Junling Ren
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY, USA.,Department of Oral and Craniofacial Molecular Biology, VCU School of Dentistry, Virginia Commonwealth University, Richmond, VA, USA
| | - Xiaoxian Duan
- Department of Microbiology and Immunology, University of Louisville School of Medicine, Louisville, KY, USA
| | - Huaxin Zhou
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Zhen Gu
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY, USA
| | - Muddasir Mohammed
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY, USA
| | - Silvia M Uriarte
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY, USA.,Department of Medicine, School of Medicine, University of Louisville, Louisville, KY, USA
| | - Shuang Liang
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY, USA
| | - David A Scott
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY, USA
| | - Richard J Lamont
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY, USA
| | - Huizhi Wang
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY, USA.,Department of Oral and Craniofacial Molecular Biology, VCU School of Dentistry, Virginia Commonwealth University, Richmond, VA, USA
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19
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Li Y, Mooney EC, Xia XJ, Gupta N, Sahingur SE. A20 Restricts Inflammatory Response and Desensitizes Gingival Keratinocytes to Apoptosis. Front Immunol 2020; 11:365. [PMID: 32218782 PMCID: PMC7078700 DOI: 10.3389/fimmu.2020.00365] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 02/14/2020] [Indexed: 12/16/2022] Open
Abstract
The pathophysiology of periodontal disease involves a perturbed immune system to a dysbiotic microflora leading to unrestrained inflammation, collateral tissue damage, and various systemic complications. Gingival epithelial cells function as an important part of immunity to restrict microbial invasion and orchestrate the subsequent innate responses. A20 (TNFAIP3), an ubiquitin-editing enzyme, is one of the key regulators of inflammation and cell death in numerous tissues including gastrointestinal tract, skin, and lungs. Emerging evidence indicates A20 as an essential molecule in the oral mucosa as well. In this study, we characterized the role of A20 in human telomerase immortalized gingival keratinocytes (TIGKs) through loss and gain of function assays in preclinical models of periodontitis. Depletion of A20 through gene editing in TIGKs significantly increased IL-6 and IL-8 secretion in response to Porphyromonas gingivalis infection while A20 over-expression dampened the cytokine production compared to A20 competent cells through modulating NF-κB signaling pathway. In the subsequent experiments which assessed apoptosis, A20 depleted TIGKs displayed increased levels of cleaved caspase 3 and DNA fragmentation following P. gingivalis infection and TNF/CHX challenge compared to A20 competent cells. Consistently, there was reduced apoptosis in the cells overexpressing A20 compared to the control cells expressing GFP further substantiating the role of A20 in regulating gingival epithelial cell fate in response to exogenous insult. Collectively, our findings reveal first systematic evidence and demonstrate that A20 acts as a regulator of inflammatory response in gingival keratinocytes through its effect on NF-κB signaling and desensitizes cells to bacteria and cytokine induced apoptosis in the oral mucosa. As altered A20 levels can have profound effect on different cellular responses, future studies will determine whether A20-targeted therapies can be exploited to restrain periodontal inflammation and maintain oral mucosa tissue homeostasis.
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Affiliation(s)
- Yajie Li
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Erin C Mooney
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States.,School of Dentistry, Philips Institute for Oral Health Research, Virginia Commonwealth University, Richmond, VA, United States
| | - Xia-Juan Xia
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Nitika Gupta
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Sinem Esra Sahingur
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States
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Decrease of miR-19b-3p in Brain Microvascular Endothelial Cells Attenuates Meningitic Escherichia coli-Induced Neuroinflammation via TNFAIP3-Mediated NF-κB Inhibition. Pathogens 2019; 8:pathogens8040268. [PMID: 31783671 PMCID: PMC6963872 DOI: 10.3390/pathogens8040268] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 11/22/2019] [Accepted: 11/26/2019] [Indexed: 12/18/2022] Open
Abstract
Meningitic Escherichia coli can traverse the host’s blood–brain barrier (BBB) and induce severe neuroinflammatory damage to the central nervous system (CNS). During this process, the host needs to reasonably balance the battle between bacteria and brain microvascular endothelial cells (BMECs) to minimize inflammatory damage, but this quenching of neuroinflammatory responses at the BBB is unclear. MicroRNAs (miRNAs) are widely recognized as key negative regulators in many pathophysiological processes, including inflammatory responses. Our previous transcriptome sequencing revealed numbers of differential miRNAs in BMECs upon meningitic E. coli infection; we next sought to explore whether and how these miRNAs worked to modulate neuroinflammatory responses at meningitic E. coli entry of the BBB. Here, we demonstrated in vivo and in vitro that meningitic E. coli infection of BMECs significantly downregulated miR-19b-3p, which led to attenuated production of proinflammatory cytokines and chemokines via increasing the expression of TNFAIP3, a negative regulator of NF-κB signaling. Moreover, in vivo injection of miR-19b-3p mimics during meningitic E. coli challenge further aggravated the inflammatory damage to mice brains. These in vivo and in vitro findings indicate a novel quenching mechanism of the host by attenuating miR-19b-3p/TNFAIP3/NF-κB signaling in BMECs in response to meningitic E. coli, thus preventing CNS from further neuroinflammatory damage.
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