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Fu Q, Zhu X, Fang Q, Han H, Wang Z, Xie J, Qian D, Wu X, Wu Y, Chen K. miR-155 enhances apoptosis of macrophage through suppressing PI3K-AKT activation in Pseudomonas aeruginosa keratitis. Heliyon 2024; 10:e36585. [PMID: 39263048 PMCID: PMC11385765 DOI: 10.1016/j.heliyon.2024.e36585] [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: 09/07/2023] [Revised: 08/15/2024] [Accepted: 08/19/2024] [Indexed: 09/13/2024] Open
Abstract
Keratitis induced by Pseudomonas aeruginosa (P. aeruginosa) is an acute and serious corneal inflammation. As a family of gene regulators, miRNAs play a crucial role in modulating host response after microbial invasion. However, their functions in P. aeruginosa keratitis remain largely unclear. In the present study, we demonstrated that miR-155 expression was significantly increased in macrophages and corneal tissue after P. aeruginosa infection. In vivo studies demonstrated that mice with miR-155 knockdown displayed more resistance to P. aeruginosa keratitis, with a lower bacterial burden. In addition, in vitro and in vivo studies indicated that miR-155 enhanced apoptosis of macrophages after P. aeruginosa infection, and resulted in a susceptible phenotype of P. aeruginosa keratitis. Moreover, miR-155 induced apoptosis through reducing activation of PI3K-Akt signaling pathway. Our data provided evidence of miR-155 mediated apoptosis of macrophage in P. aeruginosa keratitis, which may be an underlying target for the therapy of P. aeruginosa keratitis and other infectious diseases.
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Affiliation(s)
- Qiang Fu
- Zhongshan Cancer Research Institute of Zhongshan City, Zhongshan City People's Hospital, Zhongshan, Guangdong, 528403, China
| | - Xingyuan Zhu
- Zhongshan Cancer Research Institute of Zhongshan City, Zhongshan City People's Hospital, Zhongshan, Guangdong, 528403, China
| | - Qiongyan Fang
- Center for Infection and Immunity, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong Province, 519000, China
| | - Hui Han
- Zhongshan Cancer Research Institute of Zhongshan City, Zhongshan City People's Hospital, Zhongshan, Guangdong, 528403, China
| | - Zhiying Wang
- Zhongshan Cancer Research Institute of Zhongshan City, Zhongshan City People's Hospital, Zhongshan, Guangdong, 528403, China
| | - Jinye Xie
- Zhongshan Cancer Research Institute of Zhongshan City, Zhongshan City People's Hospital, Zhongshan, Guangdong, 528403, China
| | - Dong Qian
- Zhongshan Cancer Research Institute of Zhongshan City, Zhongshan City People's Hospital, Zhongshan, Guangdong, 528403, China
| | - Xinger Wu
- Zhongshan Cancer Research Institute of Zhongshan City, Zhongshan City People's Hospital, Zhongshan, Guangdong, 528403, China
| | - Yongjian Wu
- Center for Infection and Immunity, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong Province, 519000, China
| | - Kang Chen
- Department of Laboratory Medicine, Zhongshan City People's Hospital, Zhongshan, Guangdong, 528403, China
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Yang Q, Sun X, Ding Q, Qi M, Liu C, Li T, Shi F, Wang L, Li C, Kim JS. An ATP-responsive metal-organic framework against periodontitis via synergistic ion-interference-mediated pyroptosis. Natl Sci Rev 2024; 11:nwae225. [PMID: 39071842 PMCID: PMC11275458 DOI: 10.1093/nsr/nwae225] [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: 03/21/2024] [Revised: 06/08/2024] [Accepted: 06/11/2024] [Indexed: 07/30/2024] Open
Abstract
Periodontitis involves hyperactivated stromal cells that recruit immune cells, exacerbating inflammation. This study presents an ATP-responsive metal-organic framework (Mg/Zn-MOF) designed for periodontitis treatment, utilizing ion interference to modulate immune responses and prevent tissue destruction. Addressing the challenges of synergistic ion effects and targeted delivery faced by traditional immunomodulatory nanomaterials, the Mg/Zn-MOF system is activated by extracellular ATP-a pivotal molecule in periodontitis pathology-ensuring targeted ion release. Magnesium and zinc ions released from the framework synergistically inhibit membrane pore formation by attenuating Gasdermin D (GSDMD) expression and activation. This action curtails pyroptosis, lactate dehydrogenase and IL-1β release, thwarting the onset of inflammatory cascades. Mechanistically, Mg/Zn-MOF intervenes in both the NLRP3/Caspase-1/GSDMD and Caspase-11/GSDMD pathways to mitigate pyroptosis. In vivo assessments confirm its effectiveness in diminishing inflammatory cell infiltration and preserving collagen integrity, thereby safeguarding against periodontal tissue damage and bone loss. This investigation highlights the promise of ion-interference strategies in periodontitis immunotherapy, representing a significant stride in developing targeted therapeutic approaches.
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Affiliation(s)
- Qijing Yang
- Department of Prosthodontics, Jilin Provincial Engineering Laboratory of Intelligent Oral Treatment Technology, School and Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - Xiaolin Sun
- Department of Prosthodontics, Jilin Provincial Engineering Laboratory of Intelligent Oral Treatment Technology, School and Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - Qihang Ding
- Department of Prosthodontics, Jilin Provincial Engineering Laboratory of Intelligent Oral Treatment Technology, School and Hospital of Stomatology, Jilin University, Changchun 130021, China
- Department of Chemistry, Korea University, Seoul 02841, South Korea
| | - Manlin Qi
- Department of Prosthodontics, Jilin Provincial Engineering Laboratory of Intelligent Oral Treatment Technology, School and Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - Chengyu Liu
- Department of Prosthodontics, Jilin Provincial Engineering Laboratory of Intelligent Oral Treatment Technology, School and Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - Tingxuan Li
- Department of Prosthodontics, Jilin Provincial Engineering Laboratory of Intelligent Oral Treatment Technology, School and Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - Fangyu Shi
- Department of Prosthodontics, Jilin Provincial Engineering Laboratory of Intelligent Oral Treatment Technology, School and Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - Lin Wang
- Department of Prosthodontics, Jilin Provincial Engineering Laboratory of Intelligent Oral Treatment Technology, School and Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - Chunyan Li
- Department of Prosthodontics, Jilin Provincial Engineering Laboratory of Intelligent Oral Treatment Technology, School and Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - Jong Seung Kim
- Department of Chemistry, Korea University, Seoul 02841, South Korea
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3
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Yang S, Yin Y, Sun Y, Ai D, Xia X, Xu X, Song J. AZGP1 Aggravates Macrophage M1 Polarization and Pyroptosis in Periodontitis. J Dent Res 2024; 103:631-641. [PMID: 38491721 DOI: 10.1177/00220345241235616] [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: 03/18/2024] Open
Abstract
Periodontal tissue destruction in periodontitis is a consequence of the host inflammatory response to periodontal pathogens, which could be aggravated in the presence of type 2 diabetes mellitus (T2DM). Accumulating evidence highlights the intricate involvement of macrophage-mediated inflammation in the pathogenesis of periodontitis under both normal and T2DM conditions. However, the underlying mechanism remains elusive. Alpha-2-glycoprotein 1 (AZGP1), a glycoprotein featuring an MHC-I domain, has been implicated in both inflammation and metabolic disorders. In this study, we found that AZGP1 was primarily colocalized with macrophages in periodontitis tissues. AZGP1 was increased in periodontitis compared with controls, which was further elevated when accompanied by T2DM. Adeno-associated virus-mediated overexpression of Azgp1 in the periodontium significantly enhanced periodontal inflammation and alveolar bone loss, accompanied by elevated M1 macrophages and pyroptosis in murine models of periodontitis and T2DM-associated periodontitis, while Azgp1-/- mice exhibited opposite effects. In primary bone marrow-derived macrophages stimulated by lipopolysaccharide (LPS) or LPS and palmitic acid (PA), overexpression or knockout of Azgp1 markedly upregulated or suppressed, respectively, the expression of macrophage M1 markers and key components of the NLR Family Pyrin Domain Containing 3 (NLRP3)/caspase-1 signaling. Moreover, conditioned medium from Azgp1-overexpressed macrophages under LPS or LPS+PA stimulation induced higher inflammatory activation and lower osteogenic differentiation in human periodontal ligament stem cells (hPDLSCs). Furthermore, elevated M1 polarization and pyroptosis in macrophages and associated detrimental effects on hPDLSCs induced by Azgp1 overexpression could be rescued by NLRP3 or caspase-1 inhibition. Collectively, our study elucidated that AZGP1 could aggravate periodontitis by promoting macrophage M1 polarization and pyroptosis through the NLRP3/casapse-1 pathway, which was accentuated in T2DM-associated periodontitis. This finding deepens the understanding of AZGP1 in the pathogenesis of periodontitis and suggests AZGP1 as a crucial link mediating the adverse effects of diabetes on periodontal inflammation.
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Affiliation(s)
- S Yang
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Y Yin
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Y Sun
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - D Ai
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - X Xia
- Department of Endocrinology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - X Xu
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - J Song
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
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Luo W, Du C, Huang H, Kong J, Ge Z, Lin L, Wang H. The Role of Macrophage Death in Periodontitis: A Review. Inflammation 2024:10.1007/s10753-024-02015-4. [PMID: 38691250 DOI: 10.1007/s10753-024-02015-4] [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: 01/21/2024] [Revised: 01/21/2024] [Accepted: 03/28/2024] [Indexed: 05/03/2024]
Abstract
Periodontitis, an infectious inflammatory disease influenced by various factors, disrupts the delicate balance between the host microbiota and immunity. The resulting excessive immune response exacerbates the progressive destruction of the supporting periodontal tissue. Macrophages are essential elements of the host innate immune system. They are pivotal components in the periodontal immune microenvironment and actively participate in both physiological and pathological processes of periodontal tissue. When confronted with periodontitis-related irritant factors, macrophages may differentiate to pro- or anti-inflammatory subtypes that affect tissue homeostasis. Additionally, macrophages may die in response to bacterial infections, potentially affecting the severity of periodontitis. This article reviews the typical mechanisms underlying macrophage death and its effects on periodontitis. We describe five forms of macrophage death in periodontitis: apoptosis, pyroptosis, necroptosis, ferroptosis, and ETosis. Our review of macrophage death in the pathophysiology of periodontitis enhances comprehension of the pathogenesis of periodontitis that will be useful for clinical practice. Although our review elucidates the complex mechanisms by which macrophage death and inflammatory pathways perpetuate periodontitis, unresolved issues remain, necessitating further research.
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Affiliation(s)
- Wen Luo
- Department of Periodontology, School of Stomatology, China Medical University, Nanjing North Street 117, Shenyang, 110000, Liaoning Province, China
| | - Chengying Du
- Department of Periodontology, School of Stomatology, China Medical University, Nanjing North Street 117, Shenyang, 110000, Liaoning Province, China
| | - Hsiuwei Huang
- School of Stomatology, China Medical University, North Second Road 92, Shenyang, 110002, Liaoning Province, China
| | - Jie Kong
- Department of Periodontology, School of Stomatology, China Medical University, Nanjing North Street 117, Shenyang, 110000, Liaoning Province, China
| | - Ziming Ge
- Department of Periodontology, School of Stomatology, China Medical University, Nanjing North Street 117, Shenyang, 110000, Liaoning Province, China
| | - Li Lin
- Department of Periodontology, School of Stomatology, China Medical University, Nanjing North Street 117, Shenyang, 110000, Liaoning Province, China.
| | - Hongyan Wang
- Department of Periodontology, School of Stomatology, China Medical University, Nanjing North Street 117, Shenyang, 110000, Liaoning Province, China.
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Chen Y, Huang JH, Kang YB, Yao ZJ, Song JH. Bioinformatics analysis revealed the potential crosstalk genes and molecular mechanisms between intracranial aneurysms and periodontitis. BMC Med Genomics 2024; 17:114. [PMID: 38685029 PMCID: PMC11059758 DOI: 10.1186/s12920-024-01864-0] [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: 09/28/2023] [Accepted: 04/05/2024] [Indexed: 05/02/2024] Open
Abstract
OBJECTIVES The risk of intracranial aneurysms (IAs) development and rupture is significantly higher in patients with periodontitis (PD), suggesting an association between the two. However, the specific mechanisms of association between these two diseases have not been fully investigated. MATERIALS AND METHODS In this study, we downloaded IAs and PD data from the Gene Expression Omnibus. Differentially expressed genes (DEGs) were identified, and functional enrichment analysis was performed. The protein-protein interaction (PPI) network and weighted gene co-expression network analysis (WGCNA) was performed to identified key modules and key crosstalk genes. In addition, the immune cell landscape was assessed and the correlation of key crosstalk genes with each immune cell was calculated. Finally, transcription factors (TFs) regulating key crosstalk genes were explored. RESULTS 127 overlapping DEGs were identified and functional enrichment analysis highlighted the important role of immune reflection in the pathogenesis of IAs and PD. We identified ITGAX and COL4A2 as key crosstalk genes. In addition, the expression of multiple immune cells was significantly elevated in PDs and IAs compared to controls, and both key crosstalk genes were significantly negatively associated with Macrophages M2. Finally, GATA2 was identified as a potential key transcription factor (TF), which regulates two key crosstalk gene. CONCLUSIONS The present study identifies key crosstalk genes and TF in PD and IAs, providing new insights for further study of the co-pathogenesis of PD and IAs from an immune and inflammatory perspective. Also, this is the first study to report the above findings.
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Affiliation(s)
- Yao Chen
- Department of Neurosurgery, Affiliated Hospital of Putian University, Putian, Fujian Province, China
| | - Jian-Huang Huang
- Department of Neurosurgery, Affiliated Hospital of Putian University, Putian, Fujian Province, China.
| | - Yuan-Bao Kang
- Department of Neurosurgery, Affiliated Hospital of Putian University, Putian, Fujian Province, China
| | - Zheng-Jian Yao
- Department of Neurosurgery, Affiliated Hospital of Putian University, Putian, Fujian Province, China
| | - Jian-Hua Song
- Department of Neurosurgery, Affiliated Hospital of Putian University, Putian, Fujian Province, China
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6
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Yi YS. MicroRNA-mediated epigenetic regulation of inflammasomes in inflammatory responses and immunopathologies. Semin Cell Dev Biol 2024; 154:227-238. [PMID: 36437174 DOI: 10.1016/j.semcdb.2022.11.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 11/18/2022] [Accepted: 11/19/2022] [Indexed: 11/27/2022]
Abstract
Inflammation represents the first-line defense mechanism of the host against pathogens and cellular stress. One of the most critical inflammatory responses is characterized by the activation of inflammasomes, intracellular multiprotein complexes that induce inflammatory signaling pathways in response to various pathogen-associated molecular patterns or danger-associated molecular patterns under physiological and pathological conditions. Inflammasomes are tightly regulated in normal cells, and dysregulation of these complexes is observed in various pathological conditions, especially inflammatory diseases and cancers. Epigenetic regulation has been suggested as a key mechanism in modulating inflammasome activity, and microRNAs (miRNAs) have been implicated in the post-transcriptional regulation of inflammasomes. Therefore, miRNA-mediated epigenetic regulation of inflammasomes in pathological conditions has received considerable attention, and current strategies for targeting inflammasomes have been shown to be effective in the treatment of diseases associated with inflammasome activation. This review summarizes recent studies suggesting the roles of miRNAs in the epigenetic control of inflammasomes and highlights the potential of miRNAs as a therapeutic tool for treating human diseases.
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Affiliation(s)
- Young-Su Yi
- Department of Life Sciences, Kyonggi University, Suwon 16227, South Korea.
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7
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Gao X, Li S, Wang W, Zhang X, Yu X, Fan C, Li W, Yang C, Wang L, Ji Q. Caspase-3 and gasdermin E mediate macrophage pyroptosis in periodontitis. J Periodontal Res 2024; 59:140-150. [PMID: 37885312 DOI: 10.1111/jre.13197] [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: 08/11/2023] [Revised: 10/09/2023] [Accepted: 10/12/2023] [Indexed: 10/28/2023]
Abstract
BACKGROUND AND OBJECTIVES Periodontitis is a chronic inflammatory disease linked to pyroptosis, an inflammatory cell death process. Macrophages are essential for maintaining microenvironment homeostasis, which is crucial for periodontal health. This study explores the mechanisms underlying the relationship between macrophage pyroptosis and periodontitis. METHODS Expression of the pyroptosis marker gasdermin E (GSDME) and the macrophage surface marker CD68 was examined by immunofluorescence double staining in healthy and periodontitis gingival tissues. In an in vitro pyroptosis model, RAW264.7 cells were irritated using Porphyromonas gingivalis-lipopolysaccharide (P. gingivalis-LPS) after treatment with either a nuclear factor kappa-B (NF-κB) agonist or inhibitor. The mRNA and protein levels of NF-κB, caspase-3, GSDME, and interleukin-1β (IL-1β) were evaluated through qRT-PCR, western blotting, and ELISA techniques. RESULTS GSDME and CD68 were heavily elevated in inflamed gingival tissues compared to healthy tissues and co-localized in the same region. Furthermore, exposure to P. gingivalis-LPS resulted in a significant upregulation of NF-κB, caspase-3, GSDME, and IL-1β at both the mRNA and protein levels in RAW264.7 cells. NF-κB agonist or inhibitor pretreatment enhanced or inhibited these effects. CONCLUSIONS GSDME-mediated macrophage pyroptosis is implicated in periodontitis. Based on in vitro experiments, P. gingivalis-LPS causes pyroptosis in RAW264.7 cells through the caspase-3/GSDME pathway. Furthermore, NF-κB regulates this pyroptotic pathway.
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Affiliation(s)
- Xiangru Gao
- Department of Periodontology, The Affiliated Hospital of Qingdao University, Qingdao, China
- School of Stomatology, Qingdao University, Qingdao, China
| | - Shuhan Li
- Department of Periodontology, The Affiliated Hospital of Qingdao University, Qingdao, China
- School of Stomatology, Qingdao University, Qingdao, China
| | - Wenxuan Wang
- Department of Stomatology, Qingdao West Coast New Area Central Hospital, Qingdao, China
| | - Xiangyan Zhang
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xinbo Yu
- Department of Periodontology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Chun Fan
- Department of Periodontology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Wei Li
- Department of Periodontology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Caixiu Yang
- Department of Periodontology, The Affiliated Hospital of Qingdao University, Qingdao, China
- School of Stomatology, Qingdao University, Qingdao, China
| | - Lei Wang
- Department of Periodontology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Qiuxia Ji
- Department of Periodontology, The Affiliated Hospital of Qingdao University, Qingdao, China
- School of Stomatology, Qingdao University, Qingdao, China
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8
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Chen B, Wang Y, Chen G. New Potentiality of Bioactive Substances: Regulating the NLRP3 Inflammasome in Autoimmune Diseases. Nutrients 2023; 15:4584. [PMID: 37960237 PMCID: PMC10650318 DOI: 10.3390/nu15214584] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 10/21/2023] [Accepted: 10/26/2023] [Indexed: 11/15/2023] Open
Abstract
The NOD-like receptor family pyrin domain-containing 3 (NLRP3) inflammasome is an essential component of the human innate immune system, and is closely associated with adaptive immunity. In most cases, the activation of the NLRP3 inflammasome requires priming and activating, which are influenced by various ion flux signals and regulated by various enzymes. Aberrant functions of intracellular NLRP3 inflammasomes promote the occurrence and development of autoimmune diseases, with the majority of studies currently focused on rheumatoid arthritis, systemic lupus erythematosus and systemic sclerosis. In recent years, a number of bioactive substances have shown new potentiality for regulating the NLRP3 inflammasome in autoimmune diseases. This review provides a concise overview of the composition, functions, and regulation of the NLRP3 inflammasome. Additionally, we focus on the newly discovered bioactive substances for regulating the NLRP3 inflammasome in autoimmune diseases in the past three years.
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Affiliation(s)
| | | | - Guangjie Chen
- Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China; (B.C.); (Y.W.)
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Chu Y, Xu Y, Yang W, Chu K, Li S, Guo L. N-acetylcysteine protects human periodontal ligament fibroblasts from pyroptosis and osteogenic differentiation dysfunction through the SIRT1/NF-κB/Caspase-1 signaling pathway. Arch Oral Biol 2023; 148:105642. [PMID: 36773561 DOI: 10.1016/j.archoralbio.2023.105642] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 02/01/2023] [Accepted: 02/02/2023] [Indexed: 02/10/2023]
Abstract
OBJECTIVE This study was aimed to determine whether N-acetylcysteine (NAC) could inhibit lipopolysaccharides / adenosine triphosphate (ATP)-induced pyroptosis and alleviate the damage of osteogenic differentiation in human periodontal ligament fibroblasts (hPDLFs). Furthermore, this study detected whether NAC acted effectively by modulating the silent information regulator 2 homolog 1 (SIRT1)/ the nuclear factor-κB (NF-κB)/Caspase-1 signaling pathway in hPDLFs. DESIGN Cell Counting Kit-8 assay was employed to determine the appropriate concentration of NAC for the follow-up experiments. To explore the effect and the underlying mechanisms of NAC on pyroptosis and osteogenic differentiation in hPDLFs, intracellular reactive oxygen species levels were detected using 2',7'-Dichlorodihydrofluorescein Diacetate kits. Moreover, SIRT1 inhibitor, SIRT1 activator, NF-κB inhibitor and Caspase-1 inhibitor were applied, the incidence of pyroptosis was detected by flow cytometry, the osteogenic differentiation of hPDLFs was observed using alkaline phosphatase and alizarin red staining, Real-time quantitative polymerase chain reaction and Western Blot were used to detect the expression of relevant factors, the release of interleukin-1β, interleukin-18 and lactate dehydrogenase were detected by Enzyme-linked immunosorbent assay. RESULTS The results demonstrated that NAC protected hPDLFs from lipopolysaccharides/ATP-induced damage, alleviating pyroptosis and osteogenic differentiation dysfunction. Moreover, NAC abrogated the inhibition of SIRT1 activity by scavenging reactive oxygen species, thereby reduced pyroptosis and osteogenic differentiation dysfunction by inhibiting the NF-κB/Caspase-1signaling pathway. CONCLUSION NAC could inhibit pyroptosis and osteogenic differentiation dysfunction of hPDLFs by scavenging reactive oxygen species to regulate the SIRT1/NF-κB/Caspase-1 signaling axis.
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Affiliation(s)
- Yi Chu
- Luzhou Key Laboratory of Oral and Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, China; Department of Oral prosthodontics, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, China
| | - Yao Xu
- Luzhou Key Laboratory of Oral and Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, China; Department of Oral prosthodontics, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, China
| | - Wanrong Yang
- Luzhou Key Laboratory of Oral and Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, China; Department of Oral prosthodontics, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, China
| | - Kefei Chu
- Luzhou Key Laboratory of Oral and Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, China; Department of Oral prosthodontics, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, China
| | - Sihui Li
- Luzhou Key Laboratory of Oral and Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, China; Department of Oral prosthodontics, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, China
| | - Ling Guo
- Luzhou Key Laboratory of Oral and Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, China; Department of Oral prosthodontics, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, China.
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10
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Yin L, Wei X, Zhang Y, Lu C, Wang H. Citrulline inhibits LPS-induced pyroptosis of RAW264.7 macrophages through NF-κB signaling pathway. Immun Inflamm Dis 2023; 11:e832. [PMID: 37102651 PMCID: PMC10114866 DOI: 10.1002/iid3.832] [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: 12/11/2022] [Revised: 03/05/2023] [Accepted: 03/22/2023] [Indexed: 04/28/2023] Open
Abstract
BACKGROUND The aim of this study was to investigate the effect of citrulline on the pyroptosis of mouse macrophage RAW264.7 and the mechanism. We investigated the effect of citrulline on pyroptosis of RAW264.7 cell induced by lipopolysaccharide (LPS), and the modulation of nuclear factor-kappaB (NF-κB) signaling. METHODS Pyroptosis was evaluated using flow cytometry and caspase-1/sytox double staining. Cell counting kit-8 assay was performed to evaluate cell viability. RESULTS Citrulline promoted cell viability and inhibited the pyroptosis of RAW264.7 cell stimulated by LPS. Furthermore, citrulline inactivated NF-κb/p65 signaling pathway by suppressing p65 nuclear translocation induced by LPS. An NF-κb signaling pathway activator, betulinic acid, reversed the inhibition of pyroptosis induced by citrulline. CONCLUSION Citrulline inhibited LPS-induced pyrophosis, which may be closely related to the inactivation of NF-κB/p65 signaling pathway.
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Affiliation(s)
- Li Yin
- Department of BiopharmaceuticsYulin Normal UniversityYulinChina
- Bioengineering & Technology Center for Native Medicinal Resources DevelopmentYulin Normal UniversityYulinChina
| | - Xiaomin Wei
- Department of BiopharmaceuticsYulin Normal UniversityYulinChina
| | - Yanjun Zhang
- College of Pharmacy and Traditional Chinese MedicineJiangsu College of NursingHuai'an CityJiangsu ProvinceChina
| | - Chengshu Lu
- Department of BiopharmaceuticsYulin Normal UniversityYulinChina
| | - Huakun Wang
- Department of BiopharmaceuticsYulin Normal UniversityYulinChina
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11
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Wu L, Pu L, Zhuang Z. miR-155-5p/FOXO3a promotes pulmonary fibrosis in rats by mediating NLRP3 inflammasome activation. Immunopharmacol Immunotoxicol 2023; 45:257-267. [PMID: 35997271 DOI: 10.1080/08923973.2022.2115923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE Pulmonary fibrosis (PF) is regarded as progressive lung disease. miR-155-5p depletion exerts anti-fibrotic effects in silicotic mice. This study explored the effect and possible mechanism of miR-155-5p in PF rats, hoping to find a new target for PF management. METHODS Bleomycin-induced PF rat model was established. Alveolar structure and collagen fiber deposition were observed by HE and Elastica-Masson staining. Alveolitis and PF scores were evaluated using the method of Szapiel. Total collagen content was detected using the Sircol method. PF rats were intraperitoneally injected with NLRP3 inhibitor MCC950 or intravenously injected with miR-155-5p antagomir and si-FOXO3a lentivirus plasmids. Binding sites of miR-155-5p and FOXO3a were predicted using bioinformatics analysis and dual-luciferase reporter assay. The expressions of miR-155-5p, NLRP3, ASC, caspase-1, IL-1β, IL-18, and FOXO3a were detected by RT-qPCR, Western blot, and ELISA. RESULTS MCC950 treatment inhibited NLRP3 inflammasome, alleviated alveolar hemorrhage and alveolitis, and reduced blue collagen fiber deposition, scores of alveolitis and PF, and levels of NLRP3, ASC, caspase-1, IL-1β, and IL-18 in PF rats. miR-155-5p was elevated in lung tissues of PF rats. Inhibition of miR-155-5p downregulated levels of NLRP3, ASC, caspase-1, IL-1β, and IL-18 in lung tissues of PF rats. miR-155-5p targeted FOXO3a. miR-155-5p inhibition and silencing FOXO3a exacerbated alveolitis and PF in rats and increased levels of NLRP3, ASC, caspase-1, IL-1β, and IL-18. CONCLUSIONS miR-155-5p aggravated alveolitis and promoted PF by targeting FOXO3a and prompting the activation of NLRP3 inflammasome and then inducing IL-1β and IL-18 release.
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Affiliation(s)
- Ling Wu
- Department of Respiratory, Wujin Hospital Affiliated with Jiangsu University, Jiangsu Province, Changzhou, PR China
| | - Li Pu
- Department of Respiratory, Wujin Hospital Affiliated with Jiangsu University, Jiangsu Province, Changzhou, PR China
| | - Zhifang Zhuang
- Department of Respiratory, Wujin Hospital Affiliated with Jiangsu University, Jiangsu Province, Changzhou, PR China
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Chen D, Jiang X, Zou H. hASCs-derived exosomal miR-155-5p targeting TGFβR2 promotes autophagy and reduces pyroptosis to alleviate intervertebral disc degeneration. J Orthop Translat 2023; 39:163-176. [PMID: 36950198 PMCID: PMC10025964 DOI: 10.1016/j.jot.2023.02.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 02/06/2023] [Accepted: 02/16/2023] [Indexed: 03/23/2023] Open
Abstract
BACKGROUND Intervertebral disc degeneration (IDD) is a complex chronic disease involving nucleus pulposus cells (NPCs) senescence, apoptosis, autophagy and extracellular matrix (ECM) degradation. In this study, we aimed to investigate the role of human adipose tissue stem cells (hASCs)-derived exosomal miR-155-5p targeting TGFβR2 in IDD and the mechanisms involved. Then miRNA sequencing was performed, and hASCs-derived Exo (hASCs-Exo) was extracted and characterized. METHODS First, NPCs were treated with different concentrations of LPS. Then miRNA sequencing was performed, and hASCs-Exo was extracted and characterized. NPCs were treated with PBS or autophagy inhibitor 3-MA. NPCs were transfected with miR-155-5p mimic, si-TGFβR2 and negative control. Cell viability, apoptosis, ROS, caspase-1+PI, pyroptosis markers, inflammatory cytokines, autophagy markers, Aggrecan, MMP13, and Akt/mTOR pathway-related factors were measured. Bioinformatics prediction and dual-luciferase were performed to verify the binding sites of miR-155-5p to TGFβR2. Finally, we validated the role of hASCs-derived exosomal miR-155-5p on IDD in vivo. RESULTS LPS promoted pyroptosis of NPCs, and inhibited autophagy and ECM synthesis. MiR-155-5p was characterized as an inflammation-related miRNA in NPCs. HASCs-derived exosomal miR-155-5p inhibited pyroptosis of NPCs and promoted autophagy and ECM synthesis. After bioinformatics prediction and verification, it was found that miR-155-5p targeted TGFβR2. Moreover, miR-155-5p targeted TGFβR2 to promote autophagy and inhibit pyroptosis in NPCs. In vivo experiments revealed that hASCs-derived exosomal miR-155-5p alleviated IDD in rats. CONCLUSIONS HASCs-derived exosomal miR-155-5p alleviated IDD by targeting TGFβR2 to promote autophagy and reduce pyroptosis. Our study may provide a new therapeutic target for IDD. TRANSLATIONAL POTENTIAL OF THIS ARTICLE HASCs-derived exosomal miR-155-5p is expected to be a biomarker for clinical treatment of IDD. Our study may provide a new therapeutic target for IDD.
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Zhu X, Tang H, Yang M, Yin K. N6-methyladenosine in macrophage function: a novel target for metabolic diseases. Trends Endocrinol Metab 2023; 34:66-84. [PMID: 36586778 DOI: 10.1016/j.tem.2022.12.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/26/2022] [Accepted: 12/06/2022] [Indexed: 12/30/2022]
Abstract
N6-methyladenosine (m6A) is one of the most prevalent internal transcriptional modifications. Evidence has highlighted changes in m6A in metabolic disorders and various metabolic diseases. However, the precise mechanisms of these m6A changes in such conditions are not understood. Macrophages are crucial for the innate immune system and exert either beneficial or harmful roles in metabolic disease. Notably, m6A was found to be closely related to macrophage phenotype and dysfunction. In this review, we summarize m6A in macrophage function from the perspective of macrophage development, activation, and polarization, pyroptosis, and metabolic disorders. Furthermore, we discuss how m6A-mediated macrophage function affects metabolic diseases, including atherosclerosis and nonalcoholic fatty liver disease (NAFLD). Finally, we discuss challenges and prospects for m6A in macrophage and metabolic diseases with the aim of providing guidance for the treatment of metabolic diseases.
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Affiliation(s)
- Xiao Zhu
- Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin Medical University, Guilin, Guangxi 541100, China; Department of Cardiology, The Second Affiliated Hospital of Guilin Medical University, Guilin Medical University, Guilin, Guangxi 541199, China
| | - HaoJun Tang
- Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin Medical University, Guilin, Guangxi 541100, China
| | - Min Yang
- Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin Medical University, Guilin, Guangxi 541100, China
| | - Kai Yin
- Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin Medical University, Guilin, Guangxi 541100, China; Department of Cardiology, The Second Affiliated Hospital of Guilin Medical University, Guilin Medical University, Guilin, Guangxi 541199, China; Guangxi Health Commission Key Laboratory of Glucose and Lipid Metabolism Disorders, The Second Affiliated Hospital of Guilin Medical University, Guilin, Guangxi 541199, China.
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Fang M, Li B, Li X, Wang Y, Zhuang Y. MicroRNA-29b regulates pyroptosis involving calcific aortic valve disease through the STAT3/SOCS1 pathway. Int J Cardiol 2023; 371:319-328. [PMID: 36064035 DOI: 10.1016/j.ijcard.2022.08.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 08/03/2022] [Accepted: 08/15/2022] [Indexed: 12/14/2022]
Abstract
BACKGROUND CAVD (calcific aortic valve disease) involves an inflammatory response similar to pyroptosis; therefore, we speculated that the progression of pyroptosis might be involved in the pathogenesis of CAVD. METHODS We first investigated the expression of pyroptosis related genes in human CAVD, non-CAVD control and AS (calcific aortic stenosis) tissues. We further confirmed these genes by using CAVD cell and mouse models. Finally, we explored the functional molecular mechanism in the cell model. RESULTS Our recent studies found that miR-29b plays an important role in CAVD, and we wanted to further address whether miR-29b is a key factor in the progression of pyroptosis related to CAVD. In this study, we found NLRP3 was highly expressed in CAVD patients and models. In contrast, SOCS1, a suppressor of NLRP3, showed reduced expression in CAVD. Furthermore, we found that ASC, Caspase-1, IL-1β, Cleaved IL-18 and p-JAK2 were all upregulated in the tissues of CAVD patients, suggesting the likelihood of activation of the inflammasome. Then, we found that miR-29b participated in the NLRP3-regulated CAVD pathway through its target gene STAT3 (signal transducer and activator of transcription 3). Finally, we found that a miR-29b inhibitor could mitigate the increases in osteogenic differentiation and pyroptosis and that SOCS1 showed negative regulation of osteogenic differentiation and pyroptosis in CAVD. CONCLUSION These findings suggested NLRP3 inflammasome-related genes are highly expressed in CAVD, and miR-29b reverses osteoblastic differentiation of aortic valve interstitial cells by regulating pyroptosis and inhibiting inflammation via the STAT3/SOCS1 pathway.
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Affiliation(s)
- Ming Fang
- Department of Cardiology, Hainan General Hospital, Haikou, Hainan 570311, China; Department of Cardiology, Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai 201318, China
| | - Bin Li
- Department of Cardiology, Hainan General Hospital, Haikou, Hainan 570311, China
| | - Xinming Li
- Department of Cardiology, Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai 201318, China
| | - Yudai Wang
- Department of Cardiology, Hainan General Hospital, Haikou, Hainan 570311, China
| | - Yu Zhuang
- Department of Cardiovascular surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, China.
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Nandipati SR, Appukuttan D, Subramanian S, Prakash PSG. Role of miRNA-155 in the regulation of osteoclast differentiation mediated by MITF in stage III/IV periodontitis: a case-control study. J Genet Eng Biotechnol 2022; 20:161. [PMID: 36459254 PMCID: PMC9718899 DOI: 10.1186/s43141-022-00441-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 11/12/2022] [Indexed: 12/05/2022]
Abstract
BACKGROUND Monocyte-macrophage lineage cells are committed towards osteoclast differentiation in vitro by the downregulation of microphthalmia-induced transcription factor (MITF) by miRNA-155. Therefore, we aimed to evaluate miRNA-155 expression and explore the regulation of MITF by miRNA-155 during osteoclastogenesis in periodontitis. MATERIALS AND METHODS Ninety-eight subjects were recruited and categorized into the following: group I (cases)-systemically healthy with localized stage III/IV periodontitis (N = 49) and group II (controls)-systemically and periodontally healthy (N = 49). Gingival tissue samples were procured and qRT-PCR analysis was carried out for relative gene expression. RESULTS The mean ΔCT of miRNA-155 expression was -1.04 ± 2.26 and -0.01 ± 1.4 respectively for groups I and II. There was a statistically significant difference in the miRNA-155 expression (P ≤ 0.01) between the groups. The mean ΔCT of MITF expression for groups I and II was 4.15± 2.16 and 3.51± 1.57 respectively with no significant difference (P > 0.01) between the groups. In the periodontitis group, miRNA-155 expression increased by fivefolds (P ≤ 0.01) whereas MITF expression showed no significant difference in the fold change between the groups (P > 0.01). The site-specific clinical parameters showed a statistically significant strong negative and positive correlation with the ΔCT and fold change values of miRNA-155 respectively in the total 98 samples (P < 0.01). miRNA-155 was able to discriminate between periodontal health and disease with a diagnostic accuracy of 96.9% (95%CI: 91.38-98.95) and the AUC was 0.98 (95%CI: 0.97-1.0, SE = 0.008, P < 0.001) in ROC analysis with a sensitivity of 93.8% (95%CI: 83.48-97.9) and specificity of 100% (95%CI: 92.73-100). CONCLUSIONS miRNA-155 was dysregulated and upregulated by fivefolds in periodontal disease. It can be used as a potential biomarker to discriminate between periodontal health and disease. No difference in the MITF gene expression was demonstrated between periodontal health and disease. The result suggested that miRNA-155 does not affect the expression of MITF gene in the process of osteoclastogenesis in localized stage III/IV periodontitis within this study design and limitations.
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Affiliation(s)
- Sowmya Reddy Nandipati
- grid.465047.40000 0004 1767 8467Department of Periodontics, SRM Dental College and Hospital, Barathi Salai, Ramapuram, Chennai 600089 India
| | - Devapriya Appukuttan
- grid.465047.40000 0004 1767 8467Department of Periodontics, SRM Dental College and Hospital, Barathi Salai, Ramapuram, Chennai 600089 India
| | - Sangeetha Subramanian
- grid.465047.40000 0004 1767 8467Department of Periodontics, SRM Dental College and Hospital, Barathi Salai, Ramapuram, Chennai 600089 India
| | - P. S. G. Prakash
- grid.465047.40000 0004 1767 8467Department of Periodontics, SRM Dental College and Hospital, Barathi Salai, Ramapuram, Chennai 600089 India
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Wu HY, liu K, Zhang JL. LINC00240/miR-155 axis regulates function of trophoblasts and M2 macrophage polarization via modulating oxidative stress-induced pyroptosis in preeclampsia. Mol Med 2022; 28:119. [PMID: 36153499 PMCID: PMC9509611 DOI: 10.1186/s10020-022-00531-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 08/15/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
This study aimed to investigate the effects of LINC00240/miR-155/Nrf2 axis on trophoblast function and macrophage polarization in the pathogenesis of preeclampsia.
Methods
Bindings between LINC00240, miR-155 and Nrf2 were validated by dual luciferase reporter assay or RNA-immunoprecipitation. Cell proliferation, migration, invasion, and pyroptosis were detected by CCK-8, clone formation, wound healing, Transwell system, and flow cytometry, respectively. Macrophage polarization was tested by flow cytometry. The expression levels of LINC00240, miR-155, Nrf2, and oxidative stress and pyroptosis-related markers in in vitro and in vivo preeclampsia models were analyzed by qPCR, western blot, or ELISA assays. Blood pressure, urine protein levels, liver and kidney damages, and trophoblast markers in placenta tissues were further studied in vivo.
Results
Placenta tissues from preeclampsia patients and animals showed decreased LINC00240 and Nrf2 and increased miR-155 expression levels, and the decreased M2 macrophage polarization. LINC00240 directly bound and inhibited expression of miR-155, which then inhibited oxidative stress-induced pyroptosis, promoting proliferation, migration and invasion abilities of trophoblasts, and M2 macrophage polarization. Inhibition of miR-155 led to increased Nrf2 expression and similar changes as LINC00240 overexpression in trophoblast function and macrophage polarization. Overexpression of LINC00240 in in vivo preeclampsia model decreased blood pressure, urine protein, liver and kidney damages, increased fetal weight and length, and induced trophoblast function and M2 macrophage polarization.
Conclusion
LINC00240 inhibited symptoms of preeclampsia through regulation on miR-155/Nrf2 axis, which suppressed oxidative stress-induced pyroptosis to improve trophoblast function and M2 macrophage polarization. LINC00240 could be a potential therapeutic target for preeclampsia.
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Xin Y, Wang W, Mao E, Yang H, Li S. Targeting NLRP3 Inflammasome Alleviates Synovitis by Reducing Pyroptosis in Rats with Experimental Temporomandibular Joint Osteoarthritis. Mediators Inflamm 2022; 2022:2581151. [PMID: 36466156 PMCID: PMC9712023 DOI: 10.1155/2022/2581151] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 09/29/2022] [Accepted: 10/29/2022] [Indexed: 11/14/2023] Open
Abstract
The mechanism of temporomandibular joint osteoarthritis (TMJOA), which leads to the final erosion of cartilage and subchondral bone, has been widely demonstrated, but still not clearly elucidated. Many studies have pointed that NLRP3-mediated inflammation played a vital role in degenerative diseases. However, its interaction with synovitis of TMJOA has remained poorly investigated. In our study, we explored the role of NLRP3 inflammasome in TMJOA synovitis and the therapeutic potential of caspase-1 and NLRP3 inhibitors. By establishing a rat TMJOA model, we found that NLRP3 was upregulated in synovial tissue of TMJOA. It was involved in the progress of a programmed cell death called pyroptosis, which was caspase-1 dependent and ultimately triggered inflammatory mediator interleukin IL-1β release. Treatment with Ac-YVAD-cmk and MCC950, inhibitors targeting caspase-1 and NLRP3, respectively, significantly suppressed pyroptosis in TMJOA synovial tissue. Then, a macrophage- and fibroblast-like synoviocyte (FLS) cocultured model further verified the above results. Macrophage somehow promoted FLS pyroptosis in this study. Our results suggested that the NLRP3 inflammasome-mediated pyroptosis participated in synovial inflammation of TMJOA. Interfering with the progress could be a potential option for controlling TMJOA development.
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Affiliation(s)
- Yinzi Xin
- Department of Orthodontics, Kunming Medical University School and Hospital of Stomatology, Kunming 650106, China
- Yunnan Key Laboratory of Stomatology, Kunming 650106, China
| | - Wei Wang
- Department of Orthodontics, Kunming Medical University School and Hospital of Stomatology, Kunming 650106, China
- Yunnan Key Laboratory of Stomatology, Kunming 650106, China
| | - Enyu Mao
- Department of Orthodontics, Kunming Medical University School and Hospital of Stomatology, Kunming 650106, China
- Yunnan Key Laboratory of Stomatology, Kunming 650106, China
| | - Hefeng Yang
- Department of Orthodontics, Kunming Medical University School and Hospital of Stomatology, Kunming 650106, China
- Yunnan Key Laboratory of Stomatology, Kunming 650106, China
| | - Song Li
- Department of Orthodontics, Kunming Medical University School and Hospital of Stomatology, Kunming 650106, China
- Yunnan Key Laboratory of Stomatology, Kunming 650106, China
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Yin L, Li X, Hou J. Macrophages in periodontitis: A dynamic shift between tissue destruction and repair. JAPANESE DENTAL SCIENCE REVIEW 2022; 58:336-347. [DOI: 10.1016/j.jdsr.2022.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 09/14/2022] [Accepted: 10/10/2022] [Indexed: 11/26/2022] Open
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Xu X, Zhang T, Xia X, Yin Y, Yang S, Ai D, Qin H, Zhou M, Song J. Pyroptosisin periodontitis: From the intricate interaction with apoptosis, NETosis, and necroptosis to the therapeutic prospects. Front Cell Infect Microbiol 2022; 12:953277. [PMID: 36093182 PMCID: PMC9450806 DOI: 10.3389/fcimb.2022.953277] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 07/18/2022] [Indexed: 11/20/2022] Open
Abstract
Periodontitis is highly prevalent worldwide. It is characterized by periodontal attachment and alveolar bone destruction, which not only leads to tooth loss but also results in the exacerbation of systematic diseases. As such, periodontitis has a significant negative impact on the daily lives of patients. Detailed exploration of the molecular mechanisms underlying the physiopathology of periodontitis may contribute to the development of new therapeutic strategies for periodontitis and the associated systematic diseases. Pyroptosis, as one of the inflammatory programmed cell death pathways, is implicated in the pathogenesis of periodontitis. Progress in the field of pyroptosis has greatly enhanced our understanding of its role in inflammatory diseases. This review first summarizes the mechanisms underlying the activation of pyroptosis in periodontitis and the pathological role of pyroptosis in the progression of periodontitis. Then, the crosstalk between pyroptosis with apoptosis, necroptosis, and NETosis in periodontitis is discussed. Moreover, pyroptosis, as a novel link that connects periodontitis with systemic disease, is also reviewed. Finally, the current challenges associated with pyroptosis as a potential therapeutic target for periodontitis are highlighted.
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Affiliation(s)
- Xiaohui Xu
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Tingwei Zhang
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Xuyun Xia
- Department of Endocrinology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Yuanyuan Yin
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Sihan Yang
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Dongqing Ai
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Han Qin
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Mengjiao Zhou
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Jinlin Song
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
- *Correspondence: Jinlin Song,
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Lin J, Huang D, Xu H, Zhan F, Tan X. Macrophages: A communication network linking Porphyromonas gingivalis infection and associated systemic diseases. Front Immunol 2022; 13:952040. [PMID: 35967399 PMCID: PMC9363567 DOI: 10.3389/fimmu.2022.952040] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 06/30/2022] [Indexed: 12/03/2022] Open
Abstract
Porphyromonas gingivalis (P. gingivalis) is a Gram-negative anaerobic pathogen that is involved in the pathogenesis of periodontitis and systemic diseases. P. gingivalis has recently been detected in rheumatoid arthritis (RA), cardiovascular disease, and tumors, as well as Alzheimer’s disease (AD), and the presence of P. gingivalis in these diseases are correlated with poor prognosis. Macrophages are major innate immune cells which modulate immune responses against pathogens, however, multiple bacteria have evolved abilities to evade or even subvert the macrophages’ immune response, in which subsequently promote the diseases’ initiation and progression. P. gingivalis as a keystone pathogen of periodontitis has received increasing attention for the onset and development of systemic diseases. P. gingivalis induces macrophage polarization and inflammasome activation. It also causes immune response evasion which plays important roles in promoting inflammatory diseases, autoimmune diseases, and tumor development. In this review, we summarize recent discoveries on the interaction of P. gingivalis and macrophages in relevant disease development and progression, such as periodontitis, atherosclerosis, RA, AD, and cancers, aiming to provide an in-depth mechanistic understanding of this interaction and potential therapeutic strategies.
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Affiliation(s)
- Jie Lin
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Dingming Huang
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Hongwei Xu
- Myeloma Center, Winthrop P. Rockefeller Cancer Institute, Department of Internal Medicine, University of Arkansas for Medical Sciences (UAMS), Little Rock, AR, United States
| | - Fenghuang Zhan
- Myeloma Center, Winthrop P. Rockefeller Cancer Institute, Department of Internal Medicine, University of Arkansas for Medical Sciences (UAMS), Little Rock, AR, United States
- Division of Hematology and Oncology, Department of Internal Medicine, University of Iowa, Iowa, IA, United States
- *Correspondence: XueLian Tan, ; Fenghuang Zhan,
| | - XueLian Tan
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- *Correspondence: XueLian Tan, ; Fenghuang Zhan,
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MicroRNA-155 expression is associated with pulpitis progression by targeting SHIP1. Mol Biol Rep 2022; 49:8575-8586. [PMID: 35834034 DOI: 10.1007/s11033-022-07690-w] [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: 11/05/2021] [Accepted: 06/08/2022] [Indexed: 10/17/2022]
Abstract
BACKGROUND Pulpitis is a commonly seen oral inflammation condition in clinical practice, it can cause much pain for the patient and may induce infections in other systems. Much is still unknown for the pathogenic mechanism of pulpitis. In this work, we discovered that the expression of miR-155 was associated with dental pulpal inflammation both in vivo and in vitro. METHODS AND RESULTS Our experiments of LPS stimulated odontoblast cell line MDPC-23 showed miR-155 could act as a positive regulator by increasing the production of pro-inflammatory cytokines IL-1β and IL-6 during inflammatory responses, whereas knockdown of miR-155 can reverse the effects. Bioinformatics analysis demonstrated that SHIP1 is a direct target of miR-155 in odontoblasts, this result was further verified at both mRNA and protein level. Inhibition of miR-155 resulted in the downregulation of inflammation factors, while co-transfection of si-SHIP1 and miR-155 inhibitor promoted the inflammatory responses. Treatment with miR-155 mimic or si-SHIP1 up-regulated the protein level of p-PI3K and p-AKT. By contrast, miR-155 inhibitor exerted the opposite effects. miR-155 mimics could upregulate the gene expression of IL-1β and IL-6. Co-transfection of LY294002 and miR-155 mimic attenuated the inflammatory responses. Consistent with in vitro results, miR-155-/- mice could alleviate inflammatory response, as well as decrease the activation of p-PI3K and p-AKT, whereas increase the activation of SHIP1. CONCLUSIONS Our data revealed a novel role for miR-155 in regulation of dental pulpal inflammatory response by targeting SHIP1 through PI3K/AKT signaling pathway.
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Wang Z, Chan W, Yue Y. A significant other: Non-canonical Caspase-4/5/11 Inflammasome in periodontitis. Oral Dis 2022. [PMID: 35595721 DOI: 10.1111/odi.14258] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/28/2022] [Accepted: 05/16/2022] [Indexed: 02/05/2023]
Abstract
Periodontitis is an oral inflammatory disease characterised by the destruction of periodontal soft tissue and alveolar bone resorption, mainly triggered by plaque microbial infection. Pyroptosis is an inflammatory form of programmed cell death mediated by the pore-forming gasdermin proteins, which resists the invasion of pathogens in the body's immune system. Many studies have found that pyroptosis is closely related to the occurrence and development of periodontitis. At present, most of these studies focused on the canonical pathway mediated by caspase-1. Moreover, Gram-negative bacteria's lipopolysaccharide has been shown to activate a new form of non-canonical inflammasome by directly binding to human caspase-4/5 and mouse caspase-11 in the cytosol. However, most of the functions of non-canonical inflammasome are still gradually being studied. Therefore, in this review, we have summarised and analysed the existence and regulation mechanism of the non-canonical inflammasome in periodontitis.
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Affiliation(s)
- Zizheng Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Weicheng Chan
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yuan Yue
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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23
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Andrographolide Suppresses Pyroptosis in Mycobacterium tuberculosis-Infected Macrophages via the microRNA-155/Nrf2 Axis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:1885066. [PMID: 35528511 PMCID: PMC9072032 DOI: 10.1155/2022/1885066] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 04/11/2022] [Indexed: 11/17/2022]
Abstract
Tuberculosis (TB) remains a leading threat to public health worldwide with Mycobacterium tuberculosis (Mtb) infections causing long-term abnormal and excessive inflammatory responses, which in turn lead to lung damage and fibrosis, and ultimately death. Host-directed therapy (HDT) has been shown to be an effective anti-TB strategy in the absence of effective anti-TB drugs. Here, we used an in vitro macrophage model of Mtb infection to evaluate the effects of andrographolide (Andro), extracted from Andrographis paniculata, on pyroptosis in Mtb-infected macrophages. We evaluated the molecular mechanisms underlying these outcomes. These evaluations revealed that Andro downregulated the expression of proinflammatory miR-155-5p, which then promoted the expression of Nrf2 to suppress pyroptosis in Mtb-infected macrophages. Further study also demonstrated that siNrf2 could attenuate the inhibitory effect of Andro on TXNIP, validating our mechanistic studies. Thus, our data suggest that Andro may be a potential candidate adjuvant drug for anti-TB therapy as it inhibits pyroptosis in Mtb-infected macrophages, potentially improving clinical outcomes.
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24
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Xiao Q. Cinnamaldehyde attenuates kidney senescence and injury through PI3K/Akt pathway-mediated autophagy via downregulating miR-155. Ren Fail 2022; 44:601-614. [PMID: 35361048 PMCID: PMC8979530 DOI: 10.1080/0886022x.2022.2056485] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Background To prove the internal connection, we deciphered the effect of cinnamaldehyde on kidney senescence through establishing animal and cell models. Methods In vivo, a rat senescence model was constructed using D-galactose (D-gal), and the modeled rats were further treated with cinnamaldehyde. In vitro, rat renal tubular epithelial cells (NRK-52E) were transfected with miR-155 mimic or inhibitor and then treated with cinnamaldehyde, D-gal or PI3K inhibitor (LY294002). The serum levels of blood urea nitrogen (BUN) and serum creatinine (Scr) of the rats were measured by an automatic biochemical analyzer. Pathological changes of kidney were determined by hematoxylin-eosin staining. The senescence and viability of NRK-52E cells were assessed by SA-β-gal staining and CCK-8 assay, respectively. The levels of miR-155, p-PI3K/PI3K, p-Akt/Akt, LC3B (LC3-II and LC3-I) and Beclin1 were detected by qRT-PCR, immunohistochemistry, or western blot. Results D-gal elevated the levels of BUN, Scr and miR-155 in the kidney, induced the renal pathological damage, inhibited the cell viability, increased the numbers of SA-β-gal-, LC3B- and Beclin1-positive cells and upregulated the levels of LC3-II/LC3-I and Beclin1 both in the kidney and cells. Cinnamaldehyde reversed D-gal-induced effects on the kidney and cells, and moreover, the cinnamaldehyde-induced anti-D-gal effects on cells could be suppressed by miR-155 mimic but promoted by miR-155 inhibitor. LY294002 potentiated D-gal-induced effects, and reversed cinnamaldehyde- and miR-155 inhibitor-caused impacts on the PI3K/Akt pathway and LC3-II/LC3-I level in D-gal-induced cells. Conclusion Cinnamaldehyde attenuates kidney senescence and injury through PI3K/Akt pathway-mediated autophagy via downregulating miR-155.
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Affiliation(s)
- Qi Xiao
- Department of Pediatrics, Jiaxing Hospital of Traditional Chinese Medicine, Jiaxing, People's Republic of China
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25
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Gu X, Wang Y, He Y, Zhao B, Zhang Q, Li S. MiR-1656 targets GPX4 to trigger pyroptosis in broilers kidney tissues by activating NLRP3 inflammasome under Se deficiency. J Nutr Biochem 2022; 105:109001. [PMID: 35346830 DOI: 10.1016/j.jnutbio.2022.109001] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 12/12/2021] [Accepted: 02/22/2022] [Indexed: 12/24/2022]
Abstract
Selenium (Se) is a vital minor element for the organism. Se deficiency caused inflammation in kidney tissue and regulate the expression of selenoproteins and microRNAs (miRNAs). Pyroptosis involved in the inflammatory response, however, whether microRNA targets GPX4 to regulate Se-deficient kidney tissue pyroptosis is unclear. In this study, broilers were divided into two groups, Control group with 0.3mg/kg Se diet and Se-deficient group with 0.03mg/kg Se diet. The dual luciferase reporter assay system and quantitative real-time PCR (qRT-PCR) were used to screen the specificity of miR-1656 and its target protein in Se-deficient broilers. We tested the pyroptosis-related genes of Se-deficient broilers kidney and miR-1656-transfected primary broilers kidney by qRT-PCR, Western blot (WB) and immunofluorescence staining. Our research indicated that the GPX4 is one of the target genes of miR-1656, and Se deficiency leaded to the overexpression of miR-1656 and the increased expression of pyroptosis-related genes. The overexpression of miR-1656 can induce increased expression of pyroptosis-related genes including NLRP3, Caspase-1, IL-18, and IL-1β by inhibiting the release of GPX4. This study showed that miR-1656 could increase the release of ROS by targeting GPX4, activated the NLRP3 inflammasome, and release the inflammatory factors IL-1β and IL-18 to trigger pyroptosis in the kidney tissue of Se-deficient broilers. This finding may provide new research ideas for kidney injury and cell death due to Se deficiency.
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Affiliation(s)
- Xuedie Gu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P. R. China
| | - Yu Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P. R. China
| | - Yujiao He
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P. R. China
| | - Bing Zhao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P. R. China
| | - Qing Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P. R. China
| | - Shu Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P. R. China.
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26
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Tang H, Ye Y, Li L, Zhou Y, Hou L, Ren S, Xu Y. A20 alleviated caspase-1-mediated pyroptosis and inflammation stimulated by Porphyromonas gingivalis lipopolysaccharide and nicotine through autophagy enhancement. Hum Cell 2022; 35:803-816. [PMID: 35212946 DOI: 10.1007/s13577-022-00678-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 01/19/2022] [Indexed: 01/16/2023]
Abstract
Periodontitis is the leading cause of tooth loss, and patients with smoking habits are at an increased risk of developing periodontitis. A20 (the tumor necrosis factor alpha-induced protein 3, TNFAIP3) is one of the key regulators of inflammation and cell death in numerous tissues. Emerging researches indicated A20 as a fundamental molecule in the periodontal tissue. This study was to evaluate the role of A20 against cell death and inflammation in periodontitis and to elucidate the underlying mechanisms. In our study, western blot, autophagy detection, and transmission electron microscopy showed that lipopolysaccharide from Porphyromonas gingivalis (Pg.LPS) and nicotine (NI) could enhance the activation of autophagy. Pg.LPS and NI induce the pyroptosis of human periodontal ligament cells (hPDLCs), as evidenced by the decrease of membrane integrity and the increase of NLRP3, GSDMD, GSDMD-N, caspase-1 activity, and the pro-inflammatory cytokines of IL-1β, IL-6, TNF-α. Further researches were focused on that A20, an ubiquitin-editing enzyme, was linked to hPDLCs pyroptosis. Overexpression or silencing A20 could diminish or aggravate pyroptosis in hPDLCs by the modulation of autophagy. The above results demonstrated that A20 dictated the cross-talk between pyroptosis and autophagy. Overexpression of A20 enhanced autophagy to reduce pyroptosis, and thus alleviating inflammation, suggesting that A20 may be a potent target in the treatment of periodontitis.
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Affiliation(s)
- Hui Tang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, 1 # Shanghai Road, Nanjing, Jiangsu, 210029, People's Republic of China.,Department of Periodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, 1 # Shanghai Road, Nanjing, Jiangsu, 210029, People's Republic of China
| | - Yu Ye
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, 1 # Shanghai Road, Nanjing, Jiangsu, 210029, People's Republic of China.,Department of Periodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, 1 # Shanghai Road, Nanjing, Jiangsu, 210029, People's Republic of China
| | - Lu Li
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, 1 # Shanghai Road, Nanjing, Jiangsu, 210029, People's Republic of China.,Department of Periodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, 1 # Shanghai Road, Nanjing, Jiangsu, 210029, People's Republic of China
| | - Yi Zhou
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, 1 # Shanghai Road, Nanjing, Jiangsu, 210029, People's Republic of China.,Department of Periodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, 1 # Shanghai Road, Nanjing, Jiangsu, 210029, People's Republic of China
| | - Liguang Hou
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, 1 # Shanghai Road, Nanjing, Jiangsu, 210029, People's Republic of China.,Department of Periodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, 1 # Shanghai Road, Nanjing, Jiangsu, 210029, People's Republic of China
| | - Shuangshuang Ren
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, 1 # Shanghai Road, Nanjing, Jiangsu, 210029, People's Republic of China.,Department of Periodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, 1 # Shanghai Road, Nanjing, Jiangsu, 210029, People's Republic of China
| | - Yan Xu
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, 1 # Shanghai Road, Nanjing, Jiangsu, 210029, People's Republic of China. .,Department of Periodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, 1 # Shanghai Road, Nanjing, Jiangsu, 210029, People's Republic of China.
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27
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Li G, Xiu L, Li X, Ma L, Zhou J. miR-155 inhibits chondrocyte pyroptosis in knee osteoarthritis by targeting SMAD2 and inhibiting the NLRP3/Caspase-1 pathway. J Orthop Surg Res 2022; 17:48. [PMID: 35090521 PMCID: PMC8796562 DOI: 10.1186/s13018-021-02886-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 12/14/2021] [Indexed: 01/07/2023] Open
Abstract
Objective Knee osteoarthritis (KOA) is based on degenerative pathological changes. miR-155 is involved in regulating KOA. This study estimated the mechanism of miR-155 in mouse KOA chondrocytes. Methods Mouse KOA chondrocyte model was established by lipopolysaccharide (LPS) induction and identified through Collagen II immunofluorescence staining and toluidine blue staining. LPS-induced KOA chondrocytes were transfected with miR-155 inhibitor or/and si-SMAD2, followed by the evaluation of miR-155 expression, pyroptosis, the SMAD2/NLRP3/Caspase-1 axis-related protein levels, IL-1β and 1L-18 levels, and cell viability by RT-qPCR, FAM-FLICA Caspase-1 Detection Kit, Western blot, ELISA, and MTT assays, respectively. The binding sites between miR-155 and SMAD2 were predicted online and the binding relationship was verified by dual-luciferase assay. Results miR-155 was highly-expressed in LPS-induced KOA chondrocytes. miR-155 knockdown increased cell viability and decreased pyroptotic chondrocytes, and Caspase-1, 1L-1β and 1L-18 levels. miR-155 targeted SMAD2. SMAD2 knockdown partially annulled the effects of miR-155 silencing on inhibiting KOA chondrocyte pyroptosis. NLRP3 pathway was activated in LPS-induced KOA chondrocytes, inhibited after miR-155 knockdown, and activated again after further SMAD2 knockdown. NLRP3 inhibition suppressed Caspase-1, IL-1β, and IL-18 levels and chondrocyte pyroptosis and increased cell viability. Conclusion miR-155 knockdown inhibited the NLRP3/Caspase-1 pathway by targeting SMAD2, thus inhibiting mouse KOA chondrocyte pyroptosis.
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28
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Pan J, Zhao L, Liu J, Wang G. Inhibition of circular RNA circ_0138959 alleviates pyroptosis of human gingival fibroblasts via the microRNA-527/caspase-5 axis. Bioengineered 2022; 13:1908-1920. [PMID: 35030963 PMCID: PMC8805901 DOI: 10.1080/21655979.2021.2020396] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Circular RNA (circRNA) plays a regulatory role in periodontitis. This study explored whether circ_0138959 affected lipopolysaccharide (LPS)-induced pyroptosis in human gingival fibroblasts (HGFs). The periodontal ligament (PDL) tissues and HGFs were derived from patients with periodontitis and healthy volunteers. HGFs treated with LPS were considered to mimic periodontitis in vitro. Quantitative reverse transcription polymerase chain reaction (qRT-PCR) was used to evaluate the mRNA expression levels of circRNAs, miR-527, and caspase-5 (CASP5), and Western blotting assay was used to measure protein expression levels of caspase-1, caspase-4, and cleaved N-terminal gasdermin D (GSDMD-N). Cell viability was evaluated by cell counting kit-8 (CCK-8) assay. The concentration of lactate dehydrogenase (LDH), interleukin (IL)-1β, and IL-18 and the pyroptosis rate were determined to evaluate pyroptosis. The interaction between miR-527 and circ_0138959 or CASP5 was verified by dual-luciferase reporter and RNA pull-down assays. Circ_0138959 expression was higher in the PDL tissues of patients with periodontitis than in the healthy group; likewise, circ_0138959 was also upregulated in LPS-treated HGFs. Suppressed circ_0138959 increased cell viability and decreased pyroptosis of HGFs induced by LPS. miR-527 was a target of circ_0138959, and inhibition of miR-527 contributed to the dysfunction of LPS-treated HGFs and reversed the protective effects of downregulated circ_0138959. Additionally, miR-527 targeted CASP5. Increased CASP5 abrogated the effects of overexpressed miR-527 on cell viability and pyroptosis of LPS-treated HGFs. Inhibition of circ_0138959 promoted cell viability and suppressed pyroptosis of HGFs via the miR-527/CASP5 axis. Therefore, knockdown of circ_0138959 may be a promising therapy for periodontitis.
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Affiliation(s)
- Jiaxin Pan
- Department of Stomatology, The First People's Hospital of Changzhou, Changzhou City, China
| | - Lu Zhao
- Department of Stomatology, The First People's Hospital of Changzhou, Changzhou City, China
| | - Jue Liu
- Department of Stomatology, The First People's Hospital of Changzhou, Changzhou City, China
| | - Guoyun Wang
- Department of Stomatology, The First People's Hospital of Changzhou, Changzhou City, China
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29
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Wang L, Pu W, Wang C, Lei L, Li H. Microtubule affinity regulating kinase 4 promoted activation of the NLRP3 inflammasome-mediated pyroptosis in periodontitis. J Oral Microbiol 2022; 14:2015130. [PMID: 34992737 PMCID: PMC8725745 DOI: 10.1080/20002297.2021.2015130] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Background Microtubule dynamics plays a crucial role in the spatial arrangement of cell organelles and activation of the NLRP3 inflammasome. Purpose This study aimed to explore whether microtubule affinity regulating kinase 4 (MARK4) can be a therapeutic target of periodontitis by affecting microtubule dynamics and NLRP3 inflammasome-mediated pyroptosis in macrophages. Materials and Methods The NLRP3 inflammasome-related genes and MARK4 were measured in the healthy and inflamed human gingival tissues. Bone marrow-derived macrophages (BMDMs) were infected with Porphyromonas gingivalis, while the MARK4 inhibitors (OTSSP167 and Compound 50) and small interference RNA were utilized to restrain MARK4. Apoptosis-associated speck-like protein (ASC) speck was detected by confocal, and levels of interleukin-1β (IL-1β), as well as IL-18, were assessed by ELISA. Results Increased staining and transcription of MARK4, NLRP3, ASC, and Caspase-1 were observed in the inflamed gingiva. P. gingivalis infection promoted MARK4 expression and the NLRP3 inflammasome in BMDMs. Inhibition of MARK4 decreased LDH release, IL-1β and IL-18 production, ASC speck formation, and the pyroptosis-related genes transcription. Furthermore, MARK4 inhibition reduced microtubule polymerization and acetylation in P. gingivalis-infected BMDMs. Conclusions MARK4 promoted NLRP3 inflammasome activation and pyroptosis in P. gingivalis-infected BMDMs by affecting microtubule dynamics. MARK4 inhibition might be a potential target in regulating the NLRP3 inflammasome during periodontitis progress.
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Affiliation(s)
- Lulu Wang
- Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China.,Central Laboratory of Stomatology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Wenchen Pu
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China.,Laboratory of Molecular Oncology, Frontiers Science Center for Disease-related Molecular Network, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Chun Wang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China
| | - Lang Lei
- Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Houxuan Li
- Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
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30
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WANG D, ZHANG Z, SI Z, WANG L. Circ 0006282/miR-155 reduced inflammation in diabetic nephropathy via expression of SIRT1/NLRP3 signaling pathway. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.39520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Dan WANG
- Southern Medical University, China
| | | | - Zekun SI
- Southern Medical University, China
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31
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Kuo KC, Yang YL, Lo MH, Cai XY, Guo MMH, Kuo HC, Huang YH. Increased Expression of Pyroptosis in Leukocytes of Patients with Kawasaki Disease. Diagnostics (Basel) 2021; 11:diagnostics11112035. [PMID: 34829381 PMCID: PMC8620614 DOI: 10.3390/diagnostics11112035] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/28/2021] [Accepted: 11/01/2021] [Indexed: 12/19/2022] Open
Abstract
Background: Kawasaki disease (KD) is a form of febrile vasculitis that primarily occurs in children. It can cause inflammation of the coronary arteries, which leads to aneurysms. The pathogenesis of coronary arteries may be associated with apoptosis or pyroptosis mediated by caspases activity, but this idea has not been discussed much in KD. Materials and Methods: We enrolled 236 participants in this study. In the Affymetrix GeneChip® Human Transcriptome Array 2.0 study, there were 18 KD patients analyzed prior to receiving intravenous immunoglobulin (IVIG) treatment, at least 3 weeks after IVIG treatment, and 36 non-KD control subjects. We also recruited 24 KD patients prior to receiving IVIG treatment, at least 3 weeks after IVIG treatment, and 24 non-KD control subjects for Illumina HumanMethylation450 BeadChip study. A separate cohort of 134 subjects was analyzed to validate real-time quantitative PCR. Results: The mRNA levels of caspase-1, -3, -4, and -5 were significantly increased in KD patients compared with control subjects (p < 0.05). After administration of IVIG, the expression of these genes decreased considerably. Of particular note, the methylation status of the CpG sites of the caspase-4 and -5 genes demonstrated significant opposite tendencies between the KD patients and controls. Furthermore, compared with patients who responded to IVIG, refractory KD patients had a lower expression of the caspase-3 gene prior to IVIG treatment. Conclusion: Our study is the first to report the upregulation of pyroptotic caspase-1, -4, and -5 in peripheral leukocytes of KD patients. Moreover, the expression of caspase-3 may be associated with IVIG resistance in KD.
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Affiliation(s)
- Kuang-Che Kuo
- Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 833, Taiwan; (K.-C.K.); (M.-H.L.); (X.-Y.C.); (M.M.-H.G.)
- Kawasaki Disease Center, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan
| | - Ya-Ling Yang
- Department of Anesthesiology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan;
| | - Mao-Hung Lo
- Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 833, Taiwan; (K.-C.K.); (M.-H.L.); (X.-Y.C.); (M.M.-H.G.)
- Kawasaki Disease Center, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan
| | - Xin-Yuan Cai
- Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 833, Taiwan; (K.-C.K.); (M.-H.L.); (X.-Y.C.); (M.M.-H.G.)
- Kawasaki Disease Center, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan
| | - Mindy Ming-Huey Guo
- Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 833, Taiwan; (K.-C.K.); (M.-H.L.); (X.-Y.C.); (M.M.-H.G.)
- Kawasaki Disease Center, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan
| | - Ho-Chang Kuo
- Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 833, Taiwan; (K.-C.K.); (M.-H.L.); (X.-Y.C.); (M.M.-H.G.)
- Kawasaki Disease Center, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan
- Correspondence: (H.-C.K.); (Y.-H.H.)
| | - Ying-Hsien Huang
- Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 833, Taiwan; (K.-C.K.); (M.-H.L.); (X.-Y.C.); (M.M.-H.G.)
- Kawasaki Disease Center, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan
- Correspondence: (H.-C.K.); (Y.-H.H.)
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32
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Xia Y, Zhou K, Sun M, Shu R, Qian J, Xie Y. The miR-223-3p Regulates Pyroptosis Through NLRP3-Caspase 1-GSDMD Signal Axis in Periodontitis. Inflammation 2021; 44:2531-2542. [PMID: 34637033 DOI: 10.1007/s10753-021-01522-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 06/20/2021] [Accepted: 07/14/2021] [Indexed: 11/27/2022]
Abstract
Salivary exosomes contain various components and may play important roles in oral diseases. The purpose of this study was to verify the possible function of miR-223-3p from salivary exosomes in periodontitis. We isolated the salivary exosomes and found that the miR-223-3p content of salivary exosomes from periodontitis was less than the healthy control. Furthermore, we performed dual-luciferase reporter assay and real-time PCR to verify that (NOD)-like receptor (NLR) pyrin domain-containing 3 (NLRP3) was the target of miR-223-3p. When we knocked down the miR-223-3p expression in THP-1-derived macrophages, the expression of NLRP3 and the downstream inflammatory mediators interleukin-1β (IL-1β) and IL-6 were upregulated. By using integrated bioinformatics analysis, we found that pyroptosis and cytokine secretion participated in inflammatory gingival tissues. In addition, NLRP3, and the pyroptosis executioner, gasdermin D (GSDMD) was highly active in inflammatory gingival tissues compared with healthy controls by western blotting and immunohistochemistry. In summary, we speculated that miR-223-3p in salivary exosomes might regulate GSDMD-mediated pyroptosis by targeting NLRP3 in periodontitis. Detection of miR-223-3p expression in salivary exosomes could be used as an important non-invasive method to diagnose and evaluate the severity of periodontitis.
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Affiliation(s)
- Yiru Xia
- Department of Periodontology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Laboratory of Oral Microbiota and Systemic Diseases, Shanghai Ninth People's Hospital Research Center, Shanghai Jiao Tong University School of Medicine, 115 Jinzun Road, Shanghai, 200125, China
| | - Kecong Zhou
- Department of Periodontology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Laboratory of Oral Microbiota and Systemic Diseases, Shanghai Ninth People's Hospital Research Center, Shanghai Jiao Tong University School of Medicine, 115 Jinzun Road, Shanghai, 200125, China
| | - Mengjun Sun
- Department of Periodontology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Laboratory of Oral Microbiota and Systemic Diseases, Shanghai Ninth People's Hospital Research Center, Shanghai Jiao Tong University School of Medicine, 115 Jinzun Road, Shanghai, 200125, China
| | - Rong Shu
- Department of Periodontology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Laboratory of Oral Microbiota and Systemic Diseases, Shanghai Ninth People's Hospital Research Center, Shanghai Jiao Tong University School of Medicine, 115 Jinzun Road, Shanghai, 200125, China
| | - Jielei Qian
- Department of Periodontology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China.
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai, China.
- Shanghai Key Laboratory of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Yufeng Xie
- Department of Periodontology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China.
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai, China.
- Shanghai Key Laboratory of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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Wang W, Yang N, Yang YH, Wen R, Liu CF, Zhang TN. Non-Coding RNAs: Master Regulators of Inflammasomes in Inflammatory Diseases. J Inflamm Res 2021; 14:5023-5050. [PMID: 34616171 PMCID: PMC8490125 DOI: 10.2147/jir.s332840] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 09/21/2021] [Indexed: 12/11/2022] Open
Abstract
Emerging data indicates that non-coding RNAs (ncRNAs) represent more than just “junk sequences” of the genome and have been found to be involved in multiple diseases by regulating various biological process, including the activation of inflammasomes. As an important aspect of innate immunity, inflammasomes are large immune multiprotein complexes that tightly regulate the production of pro-inflammatory cytokines and mediate pyroptosis; the activation of the inflammasomes is a vital biological process in inflammatory diseases. Recent studies have emphasized the function of ncRNAs in the fine control of inflammasomes activation either by directly targeting components of the inflammasomes or by controlling the activity of various factors that control the activation of inflammasomes; consequently, ncRNAs may represent potential therapeutic targets for inflammatory diseases. Understanding the precise role of ncRNAs in controlling the activation of inflammasomes will help us to design targeted therapies for multiple inflammatory diseases. In this review, we summarize the regulatory role and therapeutic potential of ncRNAs in the activation of inflammasomes by focusing on a range of inflammatory diseases, including microbial infection, sterile inflammatory diseases, and fibrosis-related diseases. Our goal is to provide new ideas and perspectives for future research.
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Affiliation(s)
- Wei Wang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, People's Republic of China
| | - Ni Yang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, People's Republic of China
| | - Yu-Hang Yang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, People's Republic of China
| | - Ri Wen
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, People's Republic of China
| | - Chun-Feng Liu
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, People's Republic of China
| | - Tie-Ning Zhang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, People's Republic of China
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Jiang S, Huang S, Liu J, Zhou Q, Liu X. Attenuation of Porphyromonas Gingival Lipopolysaccharide-Induced Periodontal Ligament Stem Cells Injury and Inflammation by Blocking Cell Pyroptosis. J BIOMATER TISS ENG 2021. [DOI: 10.1166/jbt.2021.2759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Periodontitis is a chronic inflammation of periodontal tissue, and programmed cell death plays an important role in chronic periodontitis induced by P. gingivalis. Studies have shown that the increased expression of pyroptosis-related NLRP3 inflammasome and the pro-inflammatory
cytokines IL-1β and IL-18 in gingivitis, invasive periodontitis, and chronic periodontitis patients. The present study aimed to investigate whether the inhibition of pyroptosis could protect porphyromonas gingival lipopolysaccharide (pg-LPS)-induced human periodontal ligament stem
cells (hPDLSCs) injury and inflammation. The hPDLSCs were treated with pg-LPS and ATP in the presence of caspase1/4 inhibitor VX765. The cell proliferation and survival were assessed by CCK-8, the osteogenic differentiation capacity was evaluated by Alkaline Phosphatase (ALP) assay and alizarin
red staining. Then, cell apoptosis, cleavage of gasdermin D (GSDMD) and generation of inflammatory cytokines were estimated. Lastly, western blotting was used to detect the expression of potential target proteins. Results showed that the treatment of pg-LPS plus ATP significantly inhibited
the proliferation, survival and osteogenic differentiation of hPDLSCs, while inducing cell apoptosis, pyroptosis and inflammation. However, the presence of VX765 partially recovered the cell proliferation, survival and osteogenic differentiation. At the same time, VX765 inhibited cell apoptosis,
cleavage of GSDMD and generation of inflammatory cytokines. Besides, the expression of related proteins including Bax, Bcl-2, cleaved (c)-caspase3, c-caspase4, c-caspase1, Toll Like Receptor 4, High Mobility Group Box 1 (HMGB1) and NLRP3 was all rescued by VX765. In conclusion, our results
revealed that the blocking of cell pyroptosis could protect hPDLSCs from pg-LPS-induced injury. Therefore, the application of pyroptosis inhibitor may be a valuable therapeutic approach for treating periodontitis.
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Affiliation(s)
- Shuangfeng Jiang
- Department of Stomatology, Shenzhen Second People’s Hospital, Shenzhen, Guangdong Province, 518035, China
| | - Shanjuan Huang
- Department of Pediatric Dentistry, Shanghai Ninth People’s Hospital, Shanghai, 200011, China
| | - Jin Liu
- Department of Stomatology, Shenzhen Second People’s Hospital, Shenzhen, Guangdong Province, 518035, China
| | - Qi Zhou
- Department of Stomatology, Shenzhen Second People’s Hospital, Shenzhen, Guangdong Province, 518035, China
| | - Xiaosheng Liu
- Department of Stomatology, Shenzhen Second People’s Hospital, Shenzhen, Guangdong Province, 518035, China
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35
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Yu W, Lu L, Ji X, Qian Q, Lin X, Wang H. Recent Advances on Possible Association Between the Periodontal Infection of Porphyromonas gingivalis and Central Nervous System Injury. J Alzheimers Dis 2021; 84:51-59. [PMID: 34487050 DOI: 10.3233/jad-215143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Chronic periodontitis caused by Porphyromonas gingivalis (P. gingivalis) infection generally lasts for a lifetime. The long-term existence and development of P. gingivalis infection gradually aggravate the accumulation of inflammatory signals and toxic substances in the body. Recent evidence has revealed that P. gingivalis infection may be relevant to some central nervous system (CNS) diseases. The current work collects information and tries to explore the possible relationship between P. gingivalis infection and CNS diseases, including the interaction or pathways between peripheral infection and CNS injury, and the underlying neurotoxic mechanisms.
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Affiliation(s)
- Wenlei Yu
- School of Basic Medical Sciences, Hangzhou Normal University, Hangzhou, China.,Laboratory of Aging and Cancer Biology of Zhejiang Province, Hangzhou Normal University, Hangzhou, China
| | - Linjie Lu
- School of Basic Medical Sciences, Hangzhou Normal University, Hangzhou, China.,Laboratory of Aging and Cancer Biology of Zhejiang Province, Hangzhou Normal University, Hangzhou, China
| | - Xintong Ji
- School of Basic Medical Sciences, Hangzhou Normal University, Hangzhou, China.,Laboratory of Aging and Cancer Biology of Zhejiang Province, Hangzhou Normal University, Hangzhou, China
| | - Qiwei Qian
- School of Basic Medical Sciences, Hangzhou Normal University, Hangzhou, China.,Laboratory of Aging and Cancer Biology of Zhejiang Province, Hangzhou Normal University, Hangzhou, China
| | - Xiaohan Lin
- School of Basic Medical Sciences, Hangzhou Normal University, Hangzhou, China
| | - Huanhuan Wang
- School of Basic Medical Sciences, Hangzhou Normal University, Hangzhou, China.,Laboratory of Aging and Cancer Biology of Zhejiang Province, Hangzhou Normal University, Hangzhou, China
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Ashrafizadeh M, Najafi M, Kavyiani N, Mohammadinejad R, Farkhondeh T, Samarghandian S. Anti-Inflammatory Activity of Melatonin: a Focus on the Role of NLRP3 Inflammasome. Inflammation 2021; 44:1207-1222. [PMID: 33651308 DOI: 10.1007/s10753-021-01428-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 01/21/2021] [Accepted: 01/27/2021] [Indexed: 12/19/2022]
Abstract
Melatonin is a hormone of the pineal gland that contributes to the regulation of physiological activities, such as sleep, circadian rhythm, and neuroendocrine processes. Melatonin is found in several plants and has pharmacological activities including antioxidant, anti-inflammatory, hepatoprotective, cardioprotective, and neuroprotective. It also has shown therapeutic efficacy in treatment of cancer and diabetes. Melatonin affects several molecular pathways to exert its protective effects. The NLRP3 inflammasome is considered a novel target of melatonin. This inflammasome contributes to enhanced level of IL-1β, caspase-1 activation, and pyroptosis stimulation. The function of NLRP3 inflammasome has been explored in various diseases, including cancer, diabetes, and neurological disorders. By inhibiting NLRP3, melatonin diminishes inflammation and influences various molecular pathways, such as SIRT1, microRNA, long non-coding RNA, and Wnt/β-catenin. Here, we discuss these molecular pathways and suggest that melatonin-induced inhibition of NLRP3 should be advanced in disease therapy.
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Affiliation(s)
- Milad Ashrafizadeh
- Faculty of Engineering and Natural Sciences, Sabanci University, Orta Mahalle, Üniversite Caddesi No. 27, Orhanlı, Tuzla, 34956, Istanbul, Turkey
- Sabanci University Nanotechnology Research and Application Center (SUNUM), Tuzla, 34956, Istanbul, Turkey
| | - Masoud Najafi
- Radiology and Nuclear Medicine Department, School of Paramedical Sciences, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Nasim Kavyiani
- Department of Basic Science, Faculty of Veterinary Medicine Faculty, Islamic Azad Branch, University of Shushtar, Shushtar, Khuzestan, Iran
| | - Reza Mohammadinejad
- Pharmaceutics Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Tahereh Farkhondeh
- Medical Toxicology and Drug Abuse Research Center (MTDRC), Birjand University of Medical Sciences, Birjand, Iran
- Faculty of Pharmacy, Birjand University of Medical Sciences, Birjand, Iran
| | - Saeed Samarghandian
- Noncommunicable Diseases Research Center, Neyshabur University of Medical Sciences, Neyshabur, Iran.
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Li Y, Ling J, Jiang Q. Inflammasomes in Alveolar Bone Loss. Front Immunol 2021; 12:691013. [PMID: 34177950 PMCID: PMC8221428 DOI: 10.3389/fimmu.2021.691013] [Citation(s) in RCA: 76] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 05/18/2021] [Indexed: 12/18/2022] Open
Abstract
Bone remodeling is tightly controlled by osteoclast-mediated bone resorption and osteoblast-mediated bone formation. Fine tuning of the osteoclast-osteoblast balance results in strict synchronization of bone resorption and formation, which maintains structural integrity and bone tissue homeostasis; in contrast, dysregulated bone remodeling may cause pathological osteolysis, in which inflammation plays a vital role in promoting bone destruction. The alveolar bone presents high turnover rate, complex associations with the tooth and periodontium, and susceptibility to oral pathogenic insults and mechanical stress, which enhance its complexity in host defense and bone remodeling. Alveolar bone loss is also involved in systemic bone destruction and is affected by medication or systemic pathological factors. Therefore, it is essential to investigate the osteoimmunological mechanisms involved in the dysregulation of alveolar bone remodeling. The inflammasome is a supramolecular protein complex assembled in response to pattern recognition receptors and damage-associated molecular patterns, leading to the maturation and secretion of pro-inflammatory cytokines and activation of inflammatory responses. Pyroptosis downstream of inflammasome activation also facilitates the clearance of intracellular pathogens and irritants. However, inadequate or excessive activity of the inflammasome may allow for persistent infection and infection spreading or uncontrolled destruction of the alveolar bone, as commonly observed in periodontitis, periapical periodontitis, peri-implantitis, orthodontic tooth movement, medication-related osteonecrosis of the jaw, nonsterile or sterile osteomyelitis of the jaw, and osteoporosis. In this review, we present a framework for understanding the role and mechanism of canonical and noncanonical inflammasomes in the pathogenesis and development of etiologically diverse diseases associated with alveolar bone loss. Inappropriate inflammasome activation may drive alveolar osteolysis by regulating cellular players, including osteoclasts, osteoblasts, osteocytes, periodontal ligament cells, macrophages, monocytes, neutrophils, and adaptive immune cells, such as T helper 17 cells, causing increased osteoclast activity, decreased osteoblast activity, and enhanced periodontium inflammation by creating a pro-inflammatory milieu in a context- and cell type-dependent manner. We also discuss promising therapeutic strategies targeting inappropriate inflammasome activity in the treatment of alveolar bone loss. Novel strategies for inhibiting inflammasome signaling may facilitate the development of versatile drugs that carefully balance the beneficial contributions of inflammasomes to host defense.
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Affiliation(s)
- Yang Li
- Department of Endodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, China
| | - Junqi Ling
- Department of Endodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, China.,Guangdong Province Key Laboratory of Stomatology, Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Qianzhou Jiang
- Department of Endodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, China
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