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Ma F, Zhang W, Zhou G, Qi Y, Mao HR, Chen J, Lu Z, Wu W, Zou X, Deng D, Lv S, Xiang N, Wang X. Epimedii Folium decoction ameliorates osteoporosis in mice through NLRP3/caspase-1/IL-1β signalling pathway and gut-bone axis. Int Immunopharmacol 2024; 137:112472. [PMID: 38897131 DOI: 10.1016/j.intimp.2024.112472] [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: 04/13/2024] [Revised: 06/03/2024] [Accepted: 06/10/2024] [Indexed: 06/21/2024]
Abstract
AIM OF THE STUDY This study aimed to determine the effect of Epimedium brevicornu Maxim. (EF) on osteoporosis (OP) and its underlying molecular mechanisms, and to explore the existence of the "Gut-Bone Axis". MATERIAL AND METHODS The impact of EF decoction (EFD) on OP was evaluated using istopathological examination and biochemical assays. Targeted metabolomics was employed to identify key molecules and explore their molecular mechanisms. Alterations in the gut microbiota (GM) were evaluated by 16S rRNA gene sequencing. The role of the GM was clarified using an antibiotic cocktail and faecal microbiota transplantation. RESULTS EFD significantly increased the weight (14.06%), femur length (4.34%), abdominal fat weight (61.14%), uterine weight (69.86%), and insulin-like growth factor 1 (IGF-1) levels (59.48%), while reducing serum type I collagen cross-linked carboxy-terminal peptide (CTX-I) levels (15.02%) in osteoporotic mice. The mechanism of action may involve the regulation of the NLRP3/cleaved caspase-1/IL-1β signalling pathway in improving intestinal tight junction proteins and bone metabolism. Additionally, EFD modulated the abundance of related GM communities, such as Lactobacillus, Coriobacteriaceae, bacteria of family S24-7, Clostridiales, and Prevotella, and increased propionate and butyrate levels. Antibiotic-induced dysbiosis of gut bacteria disrupted OP regulation of bone metabolism, which was restored by the recovery of GM. CONCLUSIONS Our study is the first to demonstrate that EFD works in an OP mouse model by utilising GM and butyric acid. Thus, EF shows promise as a potential remedy for OP in the future.
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Affiliation(s)
- Fuqiang Ma
- Hubei University of Chinese Medicine, 16 Huangjiahu West Road, Wuhan, Hubei 430065, PR China; The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, 24 Jinghua Road, Luoyang, Henan 471003, PR China
| | - Weiming Zhang
- Hubei University of Chinese Medicine, 16 Huangjiahu West Road, Wuhan, Hubei 430065, PR China; Department of Dermatology, Wuhan No.1 Hospital, 215 Zhongshan Avenue, Wuhan, Hubei 430022, PR China
| | - Guangwen Zhou
- Hubei University of Chinese Medicine, 16 Huangjiahu West Road, Wuhan, Hubei 430065, PR China
| | - Yu Qi
- Hubei University of Chinese Medicine, 16 Huangjiahu West Road, Wuhan, Hubei 430065, PR China
| | - He-Rong Mao
- Hubei University of Chinese Medicine, 16 Huangjiahu West Road, Wuhan, Hubei 430065, PR China
| | - Jie Chen
- Hubei University of Chinese Medicine, 16 Huangjiahu West Road, Wuhan, Hubei 430065, PR China
| | - Zhilin Lu
- Hubei University of Chinese Medicine, 16 Huangjiahu West Road, Wuhan, Hubei 430065, PR China
| | - Wenjing Wu
- The First Clinical Medical School, Hubei University of Chinese Medicine, 16 Huangjiahu West Road, Wuhan, Hubei 430061, PR China; Department of Nephrology, Affiliated Hospital of Hubei University of Chinese Medicine, Hubei Provincial Hospital of Traditional Chinese Medicine, 4 Huayuanshan Road, Wuhan, Hubei 430061, PR China; Hubei Key Laboratory of Theory and Application Research of Liver and Kidney in Traditional Chinese Medicine, Hubei Provincial Hospital of Traditional Chinese Medicine, 4 Huayuanshan Road, Wuhan, Hubei 430061, PR China
| | - Xinrong Zou
- The First Clinical Medical School, Hubei University of Chinese Medicine, 16 Huangjiahu West Road, Wuhan, Hubei 430061, PR China; Department of Nephrology, Affiliated Hospital of Hubei University of Chinese Medicine, Hubei Provincial Hospital of Traditional Chinese Medicine, 4 Huayuanshan Road, Wuhan, Hubei 430061, PR China; Hubei Key Laboratory of Theory and Application Research of Liver and Kidney in Traditional Chinese Medicine, Hubei Provincial Hospital of Traditional Chinese Medicine, 4 Huayuanshan Road, Wuhan, Hubei 430061, PR China
| | - Danfang Deng
- The First Clinical Medical School, Hubei University of Chinese Medicine, 16 Huangjiahu West Road, Wuhan, Hubei 430061, PR China; Department of Nephrology, Affiliated Hospital of Hubei University of Chinese Medicine, Hubei Provincial Hospital of Traditional Chinese Medicine, 4 Huayuanshan Road, Wuhan, Hubei 430061, PR China; Hubei Key Laboratory of Theory and Application Research of Liver and Kidney in Traditional Chinese Medicine, Hubei Provincial Hospital of Traditional Chinese Medicine, 4 Huayuanshan Road, Wuhan, Hubei 430061, PR China
| | - Shenhui Lv
- Hubei University of Chinese Medicine, 16 Huangjiahu West Road, Wuhan, Hubei 430065, PR China; Department of Nephrology, Affiliated Hospital of Hubei University of Chinese Medicine, Hubei Provincial Hospital of Traditional Chinese Medicine, 4 Huayuanshan Road, Wuhan, Hubei 430061, PR China.
| | - Nan Xiang
- The First Clinical Medical School, Hubei University of Chinese Medicine, 16 Huangjiahu West Road, Wuhan, Hubei 430061, PR China.
| | - Xiaoqin Wang
- The First Clinical Medical School, Hubei University of Chinese Medicine, 16 Huangjiahu West Road, Wuhan, Hubei 430061, PR China; Department of Nephrology, Affiliated Hospital of Hubei University of Chinese Medicine, Hubei Provincial Hospital of Traditional Chinese Medicine, 4 Huayuanshan Road, Wuhan, Hubei 430061, PR China; Hubei Key Laboratory of Theory and Application Research of Liver and Kidney in Traditional Chinese Medicine, Hubei Provincial Hospital of Traditional Chinese Medicine, 4 Huayuanshan Road, Wuhan, Hubei 430061, PR China.
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Yang H, Xiao L, Wu D, Zhang T, Ge P. O-GlcNAcylation of NLRP3 Contributes to Lipopolysaccharide-Induced Pyroptosis of Human Gingival Fibroblasts. Mol Biotechnol 2024; 66:2023-2031. [PMID: 37566188 DOI: 10.1007/s12033-023-00846-4] [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: 04/08/2023] [Accepted: 07/29/2023] [Indexed: 08/12/2023]
Abstract
Periodontitis is a leading chronic oral disorder and poses a serious burden on public health. O-GlcNAc glycosylation (O-GlcNAcylation) is regulated only by O-GlcNAc transferase (OGT) and O-GlcNAcase (OGA) and participates in the regulation of human gingival fibroblasts (HGFs) function. Hence, the purpose of this study is to investigate whether HGFs cell function and periodontitis pathogenesis are regulated by O-GlcNAcylation. Herein, we first established cell model of periodontitis induced by lipopolysaccharide (LPS). The cell viability was measured with CCK-8 assay. Pyroptosis was measured by flow cytometry and western blot. The inflammatory factors levels were detected with ELISA kits. Afterward, our findings indicated that LPS elevated the O-GlcNAcylation level of HGFs and inhibition of O-GlcNAcylation improved LPS-induced pyroptosis of HGFs. Mechanistically, LPS heightened the expression of OGT to induce the O-GlcNAcylation of NLRP3. Subsequently, we certified that Thr542 was the O-GlcNAcylation site of NLRP3. More importantly, upregulation of NLRP3 reversed the effects of OGT knockdown on LPS-induced pyroptosis. In general, the current research demonstrated that LPS contributed to the pyroptosis of HGFs by enhancing the OGT expression to promote O-GlcNAcylation of NLRP3, which suggested that O-GlcNAcylation of NLRP3 was a driving factor for periodontitis and offered a novel insight into the treatment of this disease.
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Affiliation(s)
- Hao Yang
- Department of Stomatology, First Branch Hospital of First Affilliated Hospital, Chongqing Medical University, No. 24, Shiyou Road, Yuzhong District, Chongqing, 400011, China
| | - Li Xiao
- Department of Stomatology, First Branch Hospital of First Affilliated Hospital, Chongqing Medical University, No. 24, Shiyou Road, Yuzhong District, Chongqing, 400011, China
| | - Dongxue Wu
- Department of Stomatology, First Branch Hospital of First Affilliated Hospital, Chongqing Medical University, No. 24, Shiyou Road, Yuzhong District, Chongqing, 400011, China
| | - Tingting Zhang
- Department of Stomatology, First Branch Hospital of First Affilliated Hospital, Chongqing Medical University, No. 24, Shiyou Road, Yuzhong District, Chongqing, 400011, China
| | - Ping Ge
- Department of Internal Medicine-Cardiovascular, First Branch Hospital of First Affilliated Hospital, Chongqing Medical University, No. 24, Shiyou Road, Yuzhong District, Chongqing, 400011, China.
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3
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Zhu W, Zhang H, Niu T, Liu K, Fareeduddin Mohammed Farooqui H, Sun R, Chen X, Yuan Y, Wang S. Microglial SCAP deficiency protects against diabetes-associated cognitive impairment through inhibiting NLRP3 inflammasome-mediated neuroinflammation. Brain Behav Immun 2024; 119:154-170. [PMID: 38570101 DOI: 10.1016/j.bbi.2024.03.051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 03/25/2024] [Accepted: 03/30/2024] [Indexed: 04/05/2024] Open
Abstract
Hyperglycemia-induced pathological microglial responses and subsequent neuronal damage are notable characteristics of diabetes-associated cognitive impairment (DACI). Cholesterol accumulation in the brain is a prevalent consequence of diabetes mellitus (DM), exacerbating pathological microglial responses. Regarding disordered glucose and lipid metabolism, the Sterol Regulatory Element-Binding Protein (SREBP) cleavage-activating protein (SCAP), a cholesterol sensor, exhibits increased expression and abnormal translocation from the endoplasmic reticulum to the Golgi, amplifying the inflammatory response. Therefore, we hypothesized that overexpression of microglia-SCAP and cholesterol accumulation in DM mice could induce pathological microglial responses associated with DACI. Our type 2 DM mice model presented an abnormal increase in microglial SCAP expression. The functional loss of microglia-specific SCAP in DM mice improved cognitive impairment, neuronal synaptic plasticity deficits, and abnormal microglial responses. Mechanistically, the accumulated SCAP directly bound to and enhanced the activation of the microglial-specific inflammatory amplifier, NLRP3 inflammasome, in Golgi, thereby increasing pathological microglial responses and promoting neuronal damage. These findings indicate an important regulatory axis of microglial responses from SCAP to the NLRP3 inflammasome pathway in microglia. These underscore the crosstalk between cholesterol disorders and pathological microglial responses, offering a promising avenue for pharmaceutical interventions in DACI.
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Affiliation(s)
- Wenwen Zhu
- Department of Endocrinology, Affiliated Zhongda Hospital of Southeast University, Nanjing 210009, China; School of Medicine, Southeast University, Nanjing 210009, China
| | - Haoqiang Zhang
- Department of Endocrinology, Center for Leading Medicine and Advanced Technologies of IHM, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China
| | - Tong Niu
- Department of Endocrinology, Affiliated Zhongda Hospital of Southeast University, Nanjing 210009, China; School of Medicine, Southeast University, Nanjing 210009, China
| | - Kunyu Liu
- Department of Endocrinology, Affiliated Zhongda Hospital of Southeast University, Nanjing 210009, China; School of Medicine, Southeast University, Nanjing 210009, China
| | - Huzaifa Fareeduddin Mohammed Farooqui
- Department of Endocrinology, Affiliated Zhongda Hospital of Southeast University, Nanjing 210009, China; School of Medicine, Southeast University, Nanjing 210009, China
| | - Ruoyu Sun
- Department of Endocrinology, Affiliated Zhongda Hospital of Southeast University, Nanjing 210009, China; School of Medicine, Southeast University, Nanjing 210009, China
| | - Xiu Chen
- Department of Endocrinology, Affiliated Zhongda Hospital of Southeast University, Nanjing 210009, China; School of Medicine, Southeast University, Nanjing 210009, China
| | - Yang Yuan
- Department of Endocrinology, Affiliated Zhongda Hospital of Southeast University, Nanjing 210009, China.
| | - Shaohua Wang
- Department of Endocrinology, Affiliated Zhongda Hospital of Southeast University, Nanjing 210009, China.
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4
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Chen T, Jin L, Li J, Liu Y. Pyroptosis mediates osteoporosis via the inflammation immune microenvironment. Front Immunol 2024; 15:1371463. [PMID: 38895114 PMCID: PMC11184911 DOI: 10.3389/fimmu.2024.1371463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 05/20/2024] [Indexed: 06/21/2024] Open
Abstract
Osteoporosis represents a systemic imbalance in bone metabolism, augmenting the susceptibility to fractures among patients and emerging as a notable mortality determinant in the elderly population. It has evolved into a worldwide concern impacting the physical well-being of the elderly, imposing a substantial burden on both human society and the economy. Presently, the precise pathogenesis of osteoporosis remains inadequately characterized and necessitates further exploration. The advancement of osteoporosis is typically linked to the initiation of an inflammatory response. Cells in an inflammatory environment can cause inflammatory death including pyroptosis. Pyroptosis is a recently identified form of programmed cell death with inflammatory properties, mediated by the caspase and gasdermin families. It is regarded as the most inflammatory form of cell death in contemporary medical research. Under the influence of diverse cytokines, macrophages, and other immune cells may undergo pyroptosis, releasing inflammatory factors, such as IL-1β and IL-18. Numerous lines of evidence highlight the pivotal role of pyroptosis in the pathogenesis of inflammatory diseases, including cancer, intestinal disorders, hepatic conditions, and cutaneous ailments. Osteoporosis progression is frequently associated with inflammation; hence, pyroptosis may also play a role in the pathogenesis of osteoporosis to a certain extent, making it a potential target for treatment. This paper has provided a comprehensive summary of pertinent research concerning pyroptosis and its impact on osteoporosis. The notion proposing that pyroptosis mediates osteoporosis via the inflammatory immune microenvironment is advanced, and we subsequently investigate potential targets for treating osteoporosis through the modulation of pyroptosis.
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Affiliation(s)
- Te Chen
- Division of Joint Surgery, Department of Orthopaedics, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, Hainan, China
| | - Linyu Jin
- Department of Orthopedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopedics, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jingyi Li
- Division of Joint Surgery, Department of Orthopaedics, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, Hainan, China
| | - Yikai Liu
- Department of Endocrinology, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, Hainan, China
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5
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Ge S, Zhang B. Analysis of the effect of pulsed light on the protein of Lactobacillus plantarum based on liquid mass spectrometry. Food Sci Biotechnol 2024; 33:617-624. [PMID: 38274179 PMCID: PMC10805731 DOI: 10.1007/s10068-023-01365-3] [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: 03/07/2023] [Revised: 05/02/2023] [Accepted: 06/06/2023] [Indexed: 01/27/2024] Open
Abstract
Studying the mutagenesis mechanism is crucial for pulsed light use in the food processing industry. After being exposed to pulsed light, the original strain Y Lactobacillus Plantarum CICC6048 was transformed into the high acid-producing mutant G10. The differing levels of protein expression between the two strains were compared using the LC-MS/MS analysis. The bacterium displayed a distinct differential protein composition after pulsed light treatment, according to GO analysis. A KEGG analysis revealed that the pathways for cofactor biosynthesis, starch, sucrose metabolism, and phosphate transfer systems were considerably different in the proteins of high acid-producing strains (PTS). In the protein interaction network, A0A0R2G2S1 showed the highest level of enhanced connectivity among the differentially expressed proteins. These pathways improve the efficiency of crucial metabolism and lessen DNA repair. They may be a key mechanism for increasing the growth rate and acid production of Lactobacillus Plantarum by pulsed light.
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Affiliation(s)
- Shanying Ge
- College of Food Science, Shenyang Agricultural University, Shenyang, China
| | - Baiqing Zhang
- College of Food Science, Shenyang Agricultural University, Shenyang, China
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6
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Yang J, Liu S, Li Y, Fan Z, Meng Y, Zhou B, Zhang G, Zhan H. FABP4 in macrophages facilitates obesity-associated pancreatic cancer progression via the NLRP3/IL-1β axis. Cancer Lett 2023; 575:216403. [PMID: 37741433 DOI: 10.1016/j.canlet.2023.216403] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 08/25/2023] [Accepted: 09/18/2023] [Indexed: 09/25/2023]
Abstract
Obesity is an essential risk factor for pancreatic cancer (PC). Macrophage-induced inflammation plays a pivotal role in obesity-associated carcinogenesis and disease progression; however, the underlying molecular mechanisms remain unclear. In this study, we found that fatty acid-binding protein 4 (FABP4) overexpressed in serum of obese patients and was associated with poor overall survival. In vivo and in vitro experiments have revealed that FABP4 induces macrophage-related inflammation to promote cancer cell migration, invasion and metastasis under obese conditions. Mechanistically, FABP4 participates in transferring saturated fatty acid to induce macrophages pyroptosis in a caspase-1/GSDMD-dependent manner and mediates NOD-like receptor thermal protein domain associated protein 3 (NLRP3)/IL-1β axis in macrophages, which further regulates epithelial-mesenchymal transition signals to promote the migration, invasion, and metastasis of PC cells. Our results suggest that FABP4 in macrophages is a crucial regulator of the NLRP3/IL-1β axis to promote the progression of PC under obese conditions, which could act as a promising molecular target for treating of PC patients with obesity.
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Affiliation(s)
- Jian Yang
- Division of Pancreatic Surgery, Department of General Surgery, Qilu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Shujie Liu
- Division of Pancreatic Surgery, Department of General Surgery, Qilu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Yongzheng Li
- Division of Pancreatic Surgery, Department of General Surgery, Qilu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Zhiyao Fan
- Division of Pancreatic Surgery, Department of General Surgery, Qilu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Yufan Meng
- Division of Pancreatic Surgery, Department of General Surgery, Qilu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Bin Zhou
- Department of Hepatobiliary and Pancreatic Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Guangyong Zhang
- Department of General Surgery, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong Province, China.
| | - Hanxiang Zhan
- Division of Pancreatic Surgery, Department of General Surgery, Qilu Hospital of Shandong University, Jinan, Shandong Province, China.
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7
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Zhang RN, Jing ZQ, Zhang L, Sun ZJ. Epigenetic regulation of pyroptosis in cancer: Molecular pathogenesis and targeting strategies. Cancer Lett 2023; 575:216413. [PMID: 37769798 DOI: 10.1016/j.canlet.2023.216413] [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: 07/19/2023] [Revised: 09/02/2023] [Accepted: 09/23/2023] [Indexed: 10/02/2023]
Abstract
Immune checkpoint blockade therapy has revolutionized the field of cancer treatment, leading to durable responses in patients with advanced and metastatic cancers where conventional therapies were insufficient. However, factors like immunosuppressive cells and immune checkpoint molecules within the tumor microenvironment (TME) can suppress the immune system and thus negatively affect the efficiency of immune checkpoint inhibitors. Pyroptosis, a gasdermin-induced programmed cell death, could transform "cold tumors" to "hot tumors" to improve the milieu of TME, thus enhancing the immune response and preventing tumor growth. Recently, evidence showed that epigenetics could regulate pyroptosis, which further affects tumorigenesis, suggesting that epigenetics-based tumor cells pyroptosis could be a promising therapeutic strategy. Hence, this review focuses on the pyroptotic mechanism and summarizes three common types of epigenetics, DNA methylation, histone modification, and non-coding RNA, all of which have a role in regulating the expression of transcription factors and proteins involved in pyroptosis in cancer. Especially, we discuss targeting strategies on epigenetic-regulated pyroptosis and provide insights on the future trend of cancer research which may fuel cancer therapies into a new step.
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Affiliation(s)
- Ruo-Nan Zhang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Frontier Science Center for Immunology and Metabolism, Wuhan University, China
| | - Zhi-Qian Jing
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Frontier Science Center for Immunology and Metabolism, Wuhan University, China
| | - Lu Zhang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Frontier Science Center for Immunology and Metabolism, Wuhan University, China.
| | - Zhi-Jun Sun
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Frontier Science Center for Immunology and Metabolism, Wuhan University, China; Department of Oral Maxillofacial-Head Neck Oncology, School & Hospital of Stomatology, Wuhan University, Wuhan, China.
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8
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Alfadul H, Sabico S, Alnaami AM, Amer OE, Hussain SD, Wani K, Clerici M, Al-Daghri NM. Acute Glycemic Control in Prediabetes Individuals Favorably Alters Serum NLRP3 Inflammasome and Related Interleukins. Int J Mol Sci 2023; 24:13837. [PMID: 37762140 PMCID: PMC10530894 DOI: 10.3390/ijms241813837] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 09/03/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
Hyperglycemia associated with prediabetes (PD) alters NLRP3 inflammasome activity and related interleukins, yet no study has evaluated the expression of the NLRP3 inflammasome complex and related interleukins in individuals with a PD condition that did or did not develop type 2 diabetes mellitus (T2DM). This study investigated the effect of 6 months of lifestyle modification on the expression of the NLRP3 inflammasome and related interleukins (1α, 1β, 18, 33 and 37) in the sera of individuals with a PD condition that did or did not develop T2DM. This interventional study included 67 Saudi adults (mean age = 41.9 ± 8.0 years, mean BMI = 33.2 ± 5.5 kg/m2). Overnight-fasting serum samples were collected at baseline and at the 6-month follow-up. Serum levels of NLRP3, capsase-1 and related ILs were analyzed at both visits using commercially available immunoassay kits. Results showed that IL-1α increased in the PD group that developed T2DM (p = 0.046), IL-33 decreased in the PD group that reverted to normal (p < 0.001) and NLRP3 decreased in the PD group that remained PD (p = 0.01). Results also showed a positive over-time correlation between NLRP3 and both IL-1α and IL-33 (p < 0.001 and p = 0.028, respectively). In conclusion, glycemic control favorably altered NLRP3 inflammasome complex activity, and lifestyle modification in PD individuals is crucial in reversing harmful metabolic and inflammatory phenotypes.
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Affiliation(s)
- Hend Alfadul
- Chair for Biomarkers of Chronic Diseases, Biochemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Shaun Sabico
- Chair for Biomarkers of Chronic Diseases, Biochemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Abdullah M. Alnaami
- Chair for Biomarkers of Chronic Diseases, Biochemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Osama E. Amer
- Chair for Biomarkers of Chronic Diseases, Biochemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Syed D. Hussain
- Chair for Biomarkers of Chronic Diseases, Biochemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Kaiser Wani
- Chair for Biomarkers of Chronic Diseases, Biochemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Mario Clerici
- Department of Medical-Surgery Physiopathology and Transplantation, University of Milan, 20122 Milan, Italy
| | - Nasser M. Al-Daghri
- Chair for Biomarkers of Chronic Diseases, Biochemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
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9
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Eggelbusch M, Shi A, Broeksma BC, Vázquez-Cruz M, Soares MN, de Wit GMJ, Everts B, Jaspers RT, Wüst RCI. The NLRP3 inflammasome contributes to inflammation-induced morphological and metabolic alterations in skeletal muscle. J Cachexia Sarcopenia Muscle 2022; 13:3048-3061. [PMID: 35978267 PMCID: PMC9745466 DOI: 10.1002/jcsm.13062] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 06/09/2022] [Accepted: 07/04/2022] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Systemic inflammation is associated with skeletal muscle atrophy and metabolic dysfunction. Although the nucleotide-binding oligomerization domain-like receptor family pyrin domain containing 3 (NLRP3) inflammasome contributes to cytokine production in immune cells, its role in skeletal muscle is poorly understood. Here, we studied the link between inflammation, NLRP3, muscle morphology, and metabolism in in vitro cultured C2C12 myotubes, independent of immune cell involvement. METHODS Differentiated C2C12 myotubes were treated with lipopolysaccharide (LPS; 0, 10, and 100-200 ng/mL) to induce activation of the NLRP3 inflammasome with and without MCC950, a pharmacological inhibitor of NLRP3-induced IL-1β production. We assessed markers of the NLRP3 inflammasome, cell diameter, reactive oxygen species, and mitochondrial function. RESULTS NLRP3 gene expression and protein concentrations increased in a time-dependent and dose-dependent manner. Intracellular IL-1β concentration significantly increased (P < 0.0001), but significantly less with MCC950 (P = 0.03), suggestive of moderate activation of the NLRP3 inflammasome in cultured myotubes upon LPS stimulation. LPS suppressed myotube growth after 24 h (P = 0.03), and myotubes remained smaller up to 72 h (P = 0.0009). Exposure of myotubes to IL-1β caused similar alterations in cell morphology, and MCC950 mitigated these LPS-induced differences in cell diameter. NLRP3 appeared to co-localize with mitochondria, more so upon exposure to LPS. Mitochondrial reactive oxygen species were higher after LPS (P = 0.03), but not after addition of MCC950. Myotubes had higher glycolytic rates, and mitochondria were more fragmented upon LPS exposure, which was not altered by MCC950 supplementation. CONCLUSIONS LPS-induced activation of the NLRP3 inflammasome in cultured myotubes contributes to morphological and metabolic alterations, likely due to its mitochondrial association.
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Affiliation(s)
- Moritz Eggelbusch
- Laboratory for Myology, Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands.,Department of Nutrition and Dietetics, Amsterdam UMC location VUmc, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands.,Faculty of Sports and Nutrition, Center of Expertise Urban Vitality, Amsterdam University of Applied Sciences, Amsterdam, The Netherlands
| | - Andi Shi
- Laboratory for Myology, Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands.,Department of Oral and Maxillofacial Surgery/Pathology, Amsterdam UMC and Academic Center for Dentistry Amsterdam, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands.,Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, China
| | - Bonnie C Broeksma
- Laboratory for Myology, Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands
| | - Mariana Vázquez-Cruz
- Laboratory for Myology, Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands
| | - Madu N Soares
- Laboratory for Myology, Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands
| | - Gerard M J de Wit
- Laboratory for Myology, Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands
| | - Bart Everts
- Department of Parasitology, Leiden University Medical Center, University of Leiden, Leiden, The Netherlands
| | - Richard T Jaspers
- Laboratory for Myology, Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands.,Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, China
| | - Rob C I Wüst
- Laboratory for Myology, Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands
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10
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Pyroptosis and Insulin Resistance in Metabolic Organs. Int J Mol Sci 2022; 23:ijms231911638. [PMID: 36232938 PMCID: PMC9570443 DOI: 10.3390/ijms231911638] [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: 09/16/2022] [Revised: 09/27/2022] [Accepted: 09/28/2022] [Indexed: 11/09/2022] Open
Abstract
Skeletal muscle serves as the optimal effective organ to balance glucose homeostasis, but insulin resistance (IR) in skeletal muscle breaks this balance by impeding glucose uptake and causes metabolic disorders. IR in skeletal muscle is caused by multiple factors, and it has been reported that systemic low-grade inflammation is related to skeletal muscle IR, though its molecular mechanisms need to be ulteriorly studied. Pyroptosis is a novel inflammatory-mediated type of cell death. It has recently been reported that pyroptosis is associated with a decline in insulin sensitivity in skeletal muscle. The appropriate occurrence of pyroptosis positively eliminates pathogenic factors, whereas its excessive activation may aggravate inflammatory responses and expedite disease progression. The relationship between pyroptosis and IR in skeletal muscle and its underlined mechanism need to be further illustrated. The role of pyroptosis during the process of IR alleviation induced by non-drug interventions, such as exercise, also needs to be clarified. In this paper, we review and describe the molecular mechanisms of pyroptosis and further comb the roles of its relevant key factors in skeletal muscle IR, aiming to propose a novel theoretical basis for the relationship between pyroptosis and muscle IR and provide new research targets for the improvement of IR-related diseases.
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11
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The Role of NLRP3 Inflammasome in Diabetic Cardiomyopathy and Its Therapeutic Implications. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:3790721. [PMID: 36111168 PMCID: PMC9470324 DOI: 10.1155/2022/3790721] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 08/22/2022] [Indexed: 11/17/2022]
Abstract
Diabetic cardiomyopathy (DCM) is a serious complication of diabetes mellitus (DM). However, the precise molecular mechanisms remain largely unclear, and it is still a challenging disease to diagnose and treat. The nucleotide-binding oligomerization domain and leucine-rich repeat pyrin 3 domain (NLRP3) inflammasome is a critical part of the innate immune system in the host to defend against endogenous danger and pathogenic microbial infections. Dysregulated NLRP3 inflammasome activation results in the overproduction of cytokines, primarily IL-1β and IL-18, and eventually, inflammatory cell death-pyroptosis. A series of studies have indicated that NLRP3 inflammasome activation participates in the development of DCM, and that corresponding interventions could mitigate disease progression. Accordingly, this narrative review is aimed at briefly summarizing the cell-specific role of the NLRP3 inflammasome in DCM and provides novel insights into developing DCM therapeutic strategies targeting the NLRP3 inflammasome.
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12
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Wang J, Chen S, Liu M, Zhang M, Jia X. NEK7: a new target for the treatment of multiple tumors and chronic inflammatory diseases. Inflammopharmacology 2022; 30:1179-1187. [PMID: 35829941 DOI: 10.1007/s10787-022-01026-7] [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: 03/23/2022] [Accepted: 06/20/2022] [Indexed: 11/05/2022]
Abstract
NIMA-related kinase 7 (NEK7) is a serine/threonine kinase, which is the smallest one in mammalian NEK family. At present, many studies have reported that NEK7 has a physiological role in regulating the cell cycle and promoting the mitotic process of cells. In recent years, an increasing number of studies have proposed that NEK7 is involved in the activation of the NLRP3 inflammasome. Under normal conditions, NEK7 is in a low activity state, while under pathological conditions, NEK7 is abnormally expressed and therefore plays a key role in the progression of multiple tumors and chronic inflammatory diseases. This review will concentrate on the mechanism of NEK7 participates in the process of mitosis and regulates the activation of NLRP3 inflammasome, the aberrant expression of NEK7 in a variety of tumors and chronic inflammatory diseases, and some potential inhibitors, which may provide some new ideas for the treatment of diverse tumors and chronic inflammatory diseases associated with NEK7.
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Affiliation(s)
- Jin Wang
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, 230012, People's Republic of China.,Anhui Province Key Laboratory of Chinese Medicinal Formula, Hefei, 230012, People's Republic of China.,Anhui Province Key Laboratory of Research and Development of Chinese Medicine, Hefei, 230012, People's Republic of China
| | - Simeng Chen
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, 230012, People's Republic of China.,Anhui Province Key Laboratory of Chinese Medicinal Formula, Hefei, 230012, People's Republic of China.,Anhui Province Key Laboratory of Research and Development of Chinese Medicine, Hefei, 230012, People's Republic of China
| | - Min Liu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, 230012, People's Republic of China.,Anhui Province Key Laboratory of Chinese Medicinal Formula, Hefei, 230012, People's Republic of China.,Anhui Province Key Laboratory of Research and Development of Chinese Medicine, Hefei, 230012, People's Republic of China
| | - Min Zhang
- Department of Rheumatology and Immunology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230001, People's Republic of China
| | - Xiaoyi Jia
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, 230012, People's Republic of China. .,Anhui Province Key Laboratory of Chinese Medicinal Formula, Hefei, 230012, People's Republic of China. .,Anhui Province Key Laboratory of Research and Development of Chinese Medicine, Hefei, 230012, People's Republic of China.
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13
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Angosto-Bazarra D, Molina-López C, Pelegrín P. Physiological and pathophysiological functions of NLRP6: pro- and anti-inflammatory roles. Commun Biol 2022; 5:524. [PMID: 35650327 PMCID: PMC9160023 DOI: 10.1038/s42003-022-03491-w] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 05/12/2022] [Indexed: 12/26/2022] Open
Abstract
The nucleotide-binding oligomerization and leucine-rich repeat receptor (NLR) protein family consists of important immune sensors that form inflammasomes, a cytosolic multi-protein platform that induces caspase-1 activation and is involved in different inflammatory pathologies. The NLR family pyrin domain containing 6 (NLRP6) is a receptor that can signal by forming inflammasomes, but which can also play an important role without forming inflammasomes. NLRP6 regulates intestinal homeostasis and inflammation, but also is involved in cancer, the nervous system or liver diseases, with both protective and deleterious consequences. In the present article, we review the different roles of NLRP6 in these processes and offer new insights into NLRP6 activation. This review discusses emerging roles for the NLR family pyrin domain containing 6 receptor (NLRP6) in intestinal homeostasis, inflammation, cancer, the nervous system and liver disease.
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Affiliation(s)
- Diego Angosto-Bazarra
- Línea de Inflamación Molecular, Instituto Murciano de Investigación Biosanitaria IMIB-Arrixaca, Hospital Clínico Universitario Virgen de la Arrixaca, 30120, Murcia, Spain.
| | - Cristina Molina-López
- Línea de Inflamación Molecular, Instituto Murciano de Investigación Biosanitaria IMIB-Arrixaca, Hospital Clínico Universitario Virgen de la Arrixaca, 30120, Murcia, Spain
| | - Pablo Pelegrín
- Línea de Inflamación Molecular, Instituto Murciano de Investigación Biosanitaria IMIB-Arrixaca, Hospital Clínico Universitario Virgen de la Arrixaca, 30120, Murcia, Spain. .,Department of Biochemistry and Molecular Biology B and Immunology, Faculty of Medicine, University of Murcia, 30120, Murcia, Spain.
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14
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Alam MI, Mae M, Farhana F, Oohira M, Yamashita Y, Ozaki Y, Sakai E, Yoshimura A. NLRP3 Inflammasome Negatively Regulates RANKL-Induced Osteoclastogenesis of Mouse Bone Marrow Macrophages but Positively Regulates It in the Presence of Lipopolysaccharides. Int J Mol Sci 2022; 23:ijms23116096. [PMID: 35682777 PMCID: PMC9181162 DOI: 10.3390/ijms23116096] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/22/2022] [Accepted: 05/27/2022] [Indexed: 02/05/2023] Open
Abstract
In inflammatory bone diseases such as periodontitis, the nucleotide-binding oligomerization domain, leucine-rich repeat, and pyrin domain-containing 3 (NLRP3) inflammasome accelerates bone resorption by promoting proinflammatory cytokine IL-1β production. However, the role of the NLRP3 inflammasome in physiological bone remodeling remains unclear. Here, we investigated its role in osteoclastogenesis in the presence and absence of lipopolysaccharide (LPS), a Gram-negative bacterial component. When bone marrow macrophages (BMMs) were treated with receptor activator of nuclear factor-κB ligand (RANKL) in the presence of NLRP3 inflammasome inhibitors, osteoclast formation was promoted in the absence of LPS but attenuated in its presence. BMMs treated with RANKL and LPS produced IL-1β, and IL-1 receptor antagonist inhibited osteoclastogenesis, indicating IL-1β involvement. BMMs treated with RANKL alone produced no IL-1β but increased reactive oxygen species (ROS) production. A ROS inhibitor suppressed apoptosis-associated speck-like protein containing a caspase-1 recruitment domain (ASC) speck formation and NLRP3 inflammasome inhibitors abrogated cytotoxicity in BMMs treated with RANKL, indicating that RANKL induces pyroptotic cell death in BMMs by activating the NLRP3 inflammasome via ROS. This suggests that the NLRP3 inflammasome promotes osteoclastogenesis via IL-1β production under infectious conditions, but suppresses osteoclastogenesis by inducing pyroptosis in osteoclast precursors under physiological conditions.
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Affiliation(s)
- Mohammad Ibtehaz Alam
- Department of Periodontology and Endodontology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan; (M.I.A.); (M.M.); (M.O.); (Y.Y.); (Y.O.)
| | - Megumi Mae
- Department of Periodontology and Endodontology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan; (M.I.A.); (M.M.); (M.O.); (Y.Y.); (Y.O.)
| | - Fatima Farhana
- Department of Dental Pharmacology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan; (F.F.); (E.S.)
| | - Masayuki Oohira
- Department of Periodontology and Endodontology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan; (M.I.A.); (M.M.); (M.O.); (Y.Y.); (Y.O.)
| | - Yasunori Yamashita
- Department of Periodontology and Endodontology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan; (M.I.A.); (M.M.); (M.O.); (Y.Y.); (Y.O.)
| | - Yukio Ozaki
- Department of Periodontology and Endodontology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan; (M.I.A.); (M.M.); (M.O.); (Y.Y.); (Y.O.)
| | - Eiko Sakai
- Department of Dental Pharmacology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan; (F.F.); (E.S.)
| | - Atsutoshi Yoshimura
- Department of Periodontology and Endodontology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan; (M.I.A.); (M.M.); (M.O.); (Y.Y.); (Y.O.)
- Correspondence: ; Tel.: +81-95-819-7681
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15
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Zhang ZY, Dang SP, Li SS, Liu Y, Qi MM, Wang N, Miao LF, Wu Y, Li XY, Wang CX, Qian LL, Wang RX. Glucose Fluctuations Aggravate Myocardial Fibrosis via the Nuclear Factor-κB-Mediated Nucleotide-Binding Oligomerization Domain-Like Receptor Protein 3 Inflammasome Activation. Front Cardiovasc Med 2022; 9:748183. [PMID: 35592403 PMCID: PMC9110689 DOI: 10.3389/fcvm.2022.748183] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 02/24/2022] [Indexed: 01/09/2023] Open
Abstract
BackgroundGlucose fluctuations may be associated with myocardial fibrosis. This study aimed to investigate the underlying mechanisms of glucose fluctuation-related myocardial fibrosis.MethodsStreptozotocin (STZ)-injected type 1 diabetic rats were randomized to five groups: the controlled blood glucose (CBG) group, uncontrolled blood glucose (UBG) group, fluctuated blood glucose (FBG) group, FBG rats injected with 0.9% sodium chloride (NaCl) (FBG + NaCl) group, and FBG rats injected with MCC950 (FBG + MCC950) group. Eight weeks later, left ventricular function was evaluated by echocardiography and myocardial fibrosis was observed by Masson trichrome staining. The primary neonatal rat cardiac fibroblasts were cultured with different concentrations of glucose in vitro.ResultsThe left ventricular function was impaired and myocardial fibrosis was aggravated most significantly in the FBG group compared with the CBG and UBG groups. The levels of interleukin (IL)-1β, IL-18, transforming growth factor-β1 (TGF-β1), collagen type 1 (collagen I), nuclear factor (NF)-κB, and nucleotide-binding oligomerization domain-like receptor protein 3 (NLRP3) inflammasome were significantly increased in the FBG group. In vitro, the inhibition of NF-κB and inflammasome reversed these effects. In vivo, NLRP3 inhibition with MCC950 reversed left ventricular systolic dysfunction and myocardial fibrosis induced by glucose fluctuations.ConclusionGlucose fluctuations promote diabetic myocardial fibrosis by the NF-κB-mediated inflammasome activation.
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Affiliation(s)
- Zhen-Ye Zhang
- Department of Cardiology, The Affiliated Wuxi People’s Hospital of Nanjing Medical University, Wuxi, China
| | - Shi-Peng Dang
- Department of Cardiology, The Affiliated Wuxi People’s Hospital of Nanjing Medical University, Wuxi, China
| | - Shan-Shan Li
- Department of Cardiology, The Affiliated Wuxi People’s Hospital of Nanjing Medical University, Wuxi, China
| | - Ying Liu
- Department of Cardiology, The Affiliated Wuxi People’s Hospital of Nanjing Medical University, Wuxi, China
| | - Miao-Miao Qi
- Department of Cardiology, The Affiliated Wuxi People’s Hospital of Nanjing Medical University, Wuxi, China
| | - Ning Wang
- Department of Cardiology, The Affiliated Wuxi People’s Hospital of Nanjing Medical University, Wuxi, China
| | - Ling-Feng Miao
- Department of Cardiology, The Affiliated Wuxi People’s Hospital of Nanjing Medical University, Wuxi, China
| | - Ying Wu
- Department of Cardiology, The Affiliated Wuxi People’s Hospital of Nanjing Medical University, Wuxi, China
| | - Xiao-Yan Li
- Department of Cardiology, The Affiliated Wuxi People’s Hospital of Nanjing Medical University, Wuxi, China
| | - Chun-Xin Wang
- Department of Medical Laboratory, The Affiliated Wuxi People’s Hospital of Nanjing Medical University, Wuxi, China
| | - Ling-Ling Qian
- Department of Cardiology, The Affiliated Wuxi People’s Hospital of Nanjing Medical University, Wuxi, China
- *Correspondence: Ling-Ling Qian,
| | - Ru-Xing Wang
- Department of Cardiology, The Affiliated Wuxi People’s Hospital of Nanjing Medical University, Wuxi, China
- Ru-Xing Wang,
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16
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Jia D, He Y, Wang Y, Xue M, Zhu L, Xia FX, Li Y, Gao Y, Li L, Chen S, Xu G, Yuan C. NEAT1: A novel long non-coding RNA involved in mediating type 2 diabetes and its various complications. Curr Pharm Des 2022; 28:1342-1350. [DOI: 10.2174/1381612828666220428093207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 02/03/2022] [Accepted: 03/15/2022] [Indexed: 11/22/2022]
Abstract
Background:
Nuclear‐enriched abundant transcript 1 (abbreviated as NEAT1) refers to a long-chain non-coding RNA involved within various physiological and pathological processes. This study aimed at clarifying the effect and molecule system of neat1 within nonalcoholic fatty liver disease (NAFLD) as well as type 2 diabetes (T2DM).
Method:
In this review, we summarize and analyze current studies concerning mechanisms of NEAT1 in the development of type 2 diabetes and its complications. Also, we search the papers of NEAT1 in applying to NAFLD. The related studies were obtained through a systematic search of Pubmed.
Results:
Neat1 displays a close correlation with how T2DM occurs and develops, and it was confirmed to be significantly up-regulated in T2DM and its various complications (e.g., diabetics nephropathy, diabetics cardiomyopathy, diabetics retinopathy as well as diabetic neuropathy). Besides, neat1 is capable of impacting the occurrence, development and prognosis of NAFLD and T2DM.
Conclusion:
LncRNA neat1 is likely to act as a novel therapeutic target for and T2DM and its complications. Moreover, nonalcoholic fatty liver disease is also correlated with NEAT1.
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Affiliation(s)
- Dengke Jia
- College of Medical Science, China Three Gorges University, Yichang 443002, China
| | - Yaping He
- College of Medical Science, China Three Gorges University, Yichang 443002, China
| | - Yaqi Wang
- College of Medical Science, China Three Gorges University, Yichang 443002, China
| | - Mengzhen Xue
- College of Medical Science, China Three Gorges University, Yichang 443002, China
| | - Leiqi Zhu
- College of Medical Science, China Three Gorges University, Yichang 443002, China
| | - Fangqi Xia Xia
- College of Medical Science, China Three Gorges University, Yichang 443002, China
| | - Yuanyang Li
- College of Medical Science, China Three Gorges University, Yichang 443002, China
| | - Yan Gao
- College of Medical Science, China Three Gorges University, Yichang 443002, China
| | - Luoying Li
- College of Medical Science, China Three Gorges University, Yichang 443002, China
| | - Silong Chen
- College of Medical Science, China Three Gorges University, Yichang 443002, China
| | - Guangfu Xu
- College of Medical Science, China Three Gorges University, Yichang 443002, China
| | - Chengfu Yuan
- College of Medical Science, China Three Gorges University, Yichang 443002, China
- Third-Grade Pharmacological Laboratory on Chinese Medicine Approved by State Administration of Traditional Chinese Medicine, Medical College of China Three Gorges, Yichang. Hubei 443002. China
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17
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Ma C, Yu X, Li D, Fan Y, Tang Y, Tao Q, Zheng L. Inhibition of SET domain-containing (lysine methyltransferase) 7 alleviates cognitive impairment through suppressing the activation of NOD-like receptor protein 3 inflammasome in isoflurane-induced aged mice. Hum Exp Toxicol 2022; 41:9603271211061497. [PMID: 35187972 DOI: 10.1177/09603271211061497] [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: 11/16/2022]
Abstract
BACKGROUND As a common postoperative complication to elderly patients, postoperative cognitive dysfunction (POCD) is a central nervous system complication, often taking place after anesthesia and surgery. (Su(var)3-9, enhancer-of-zeste, and trithorax) domain-containing protein 7 (SETD7) plays important roles in metabolic-related diseases, viral infections, tumor formation, and some inflammatory reactions. However, the role and mechanism of SETD7 in POCD have not been previously studied. METHODS RT-PCR and Western blot were performed to evaluate the efficiency of knockdown of SETD7. The pathological changes of hippocampal neurons in isoflurane-anesthetized mice were detected by HE staining, and the Morris water maze experiment was performed to evaluate the learning and memory abilities of mice. The effect of SETD7 on the hippocampus in isoflurane-induced aged mice was examined by Western blot and TUNEL assay. Then ELISA assay was applied to determine the expression of some inflammatory cytokines, followed by the detection of expression of NOD-like receptor protein 3 (NLRP3) inflammasome through Western blot. RESULTS The data of this research revealed that SETD7 knockdown improved cognitive impairment in isoflurane-anesthetized mice, ameliorated cell pyroptosis, inhibited the release of inflammatory cytokines, and suppressed the activation of NLRP3 inflammasome in the hippocampus in isoflurane-induced aged mice. CONCLUSION Collectively, these results provided evidence that the inhibition of SETD7 could alleviate neuroinflammation, pyroptosis, and cognitive impairment by suppressing the activation of the NLRP3 inflammasome in isoflurane-induced aged mice.
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Affiliation(s)
- Chao Ma
- Department of Anesthesiology, 543160the Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, China
| | - Xianjun Yu
- Department of Anesthesiology, 543160the Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, China
| | - Dong Li
- Department of General Surgery, 543160the Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, China
| | - Youwen Fan
- Department of General Surgery, 543160the Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, China
| | - Yajun Tang
- Department of General Surgery, 543160the Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, China
| | - Qiang Tao
- Department of General Surgery, 543160the Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, China
| | - Lei Zheng
- Department of Anesthesiology, 543160the Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, China
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18
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Yue SR, Tan YY, Zhang L, Zhang BJ, Jiang FY, Ji G, Liu BC, Wang RR. Gynostemma pentaphyllum polysaccharides ameliorate non-alcoholic steatohepatitis in mice associated with gut microbiota and the TLR2/NLRP3 pathway. Front Endocrinol (Lausanne) 2022; 13:885039. [PMID: 35937847 PMCID: PMC9352886 DOI: 10.3389/fendo.2022.885039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Accepted: 06/28/2022] [Indexed: 12/24/2022] Open
Abstract
Recent studies have revealed the pivotal role of gut microbiota in the progress of liver diseases including non-alcoholic steatohepatitis (NASH). Many natural herbs, such as Gynostemma pentaphyllum (GP), have been extensively applied in the prevention of NASH, while the bioactive components and underlying mechanism remain unclear. The aim of this study was to investigate whether the polysaccharides of GP (GPP) have a protective effect on NASH and to explore the potential mechanism underlying these effects. C57BL/6 male mice were fed with a methionine-choline-deficient (MCD) diet for 4 weeks to induce NASH and administered daily oral gavage of sodium carboxymethylcellulose (CMC-Na), low dose of GPP (LGPP), high dose of GPP (HGPP), and polyene phosphatidylcholine capsules (PPC), compared with the methionine-choline-sufficient (MCS) group. Our results showed that the symptoms of hepatic steatosis, hepatocyte ballooning, liver fibrosis, and oxidative stress could be partially recovered through the intervention of GPP with a dose-dependent effect. Furthermore, gut microbiome sequencing revealed that HGPP altered the composition of gut microbiota, mainly characterized by the enrichment of genera including Akkermansia, Lactobacillus, and A2. Moreover, hepatic transcriptome analysis indicated that the anti-inflammatory effect of HGPP might be associated with toll-like receptor (TLR) and nod-like receptor (NLR) signaling pathways. HGPP could inhibit the expression of TLR2 and downregulate the expression of the NLRP3 inflammasome, as well as the pro-inflammatory cytokine tumor necrosis factor (TNF)-α and interleukin (IL)-1β. In summary, GPP could ameliorate NASH possibly mediated via the modulation of gut microbiota and the TLR2/NLRP3 signaling pathway, indicating that GPP could be tested as a prebiotic agent in the prevention of NASH.
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Affiliation(s)
- Si-Ran Yue
- Shanghai Innovation Center of Traditional Chinese Medicine Health Service, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yi-Yun Tan
- Shanghai Innovation Center of Traditional Chinese Medicine Health Service, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lei Zhang
- Shanghai Innovation Center of Traditional Chinese Medicine Health Service, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Bao-Jun Zhang
- Shanghai Innovation Center of Traditional Chinese Medicine Health Service, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Feng-Yan Jiang
- Shanghai Innovation Center of Traditional Chinese Medicine Health Service, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Guang Ji
- Shanghai Innovation Center of Traditional Chinese Medicine Health Service, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Institute of Digestive Diseases, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- *Correspondence: Rui-Rui Wang, ; Bao-Cheng Liu, ; Guang Ji,
| | - Bao-Cheng Liu
- Shanghai Innovation Center of Traditional Chinese Medicine Health Service, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- *Correspondence: Rui-Rui Wang, ; Bao-Cheng Liu, ; Guang Ji,
| | - Rui-Rui Wang
- Shanghai Innovation Center of Traditional Chinese Medicine Health Service, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- *Correspondence: Rui-Rui Wang, ; Bao-Cheng Liu, ; Guang Ji,
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19
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Li Y, Zhang J, Xu J, Liu S. The Metabolism Symbiosis Between Pancreatic Cancer and Tumor Microenvironment. Front Oncol 2021; 11:759376. [PMID: 34976805 PMCID: PMC8716377 DOI: 10.3389/fonc.2021.759376] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 11/30/2021] [Indexed: 12/23/2022] Open
Abstract
Complex interactions occur between tumor cells and the tumor microenvironment. Studies have focused on the mechanism of metabolic symbiosis between tumors and the tumor microenvironment. During tumor development, the metabolic pattern undergoes significant changes, and the optimal metabolic mode of the tumor is selected on the basis of its individual environment. Tumor cells can adapt to a specific microenvironment through metabolic adjustment to achieve compatibility. In this study, the effects of tumor glucose metabolism, lipid metabolism, and amino acid metabolism on the tumor microenvironment and related mechanisms were reviewed. Selective targeting of tumor cell metabolic reprogramming is an attractive direction for tumor therapy. Understanding the mechanism of tumor metabolic adaptation and determining the metabolism symbiosis mechanism between tumor cells and the surrounding microenvironment may provide a new approach for treatment, which is of great significance for accelerating the development of targeted tumor metabolic drugs and administering individualized tumor metabolic therapy.
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Affiliation(s)
- Ying Li
- Department of Blood Transfusion, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Ju Zhang
- Department of Operating Room, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jie Xu
- Department of Nursing, Zaozhuang Second Health School, Zaozhuang, China
| | - Shanglong Liu
- Department of Gastrointestinal Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
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NLRP3 Inflammasome in Diabetic Cardiomyopathy and Exercise Intervention. Int J Mol Sci 2021; 22:ijms222413228. [PMID: 34948026 PMCID: PMC8707657 DOI: 10.3390/ijms222413228] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/24/2021] [Accepted: 12/06/2021] [Indexed: 12/12/2022] Open
Abstract
Diabetic cardiomyopathy (DCM), as a common complication of diabetes, is characterized by chronic low-grade inflammation. The NLRP3 inflammasome is a key sensor mediating innate immune and inflammatory responses. However, the mechanisms initiating and promoting NLRP3 inflammasome activation in DCM is largely unexplored. The aim of the present review is to describe the link between NLRP3 inflammasome and DCM, and to provide evidence highlighting the importance of exercise training in DCM intervention. Collectively, this evidence suggests that DCM is an inflammatory disease aggravated by NLRP3 inflammasome-mediated release of IL-1β and IL-18. In addition, chronic exercise intervention is an effective preventive and therapeutic method to alleviate DCM via modulating the NLRP3 inflammasome.
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21
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Zhang X, Li C, Chen D, He X, Zhao Y, Bao L, Wang Q, Zhou J, Xie Y. H. pylori CagA activates the NLRP3 inflammasome to promote gastric cancer cell migration and invasion. Inflamm Res 2021; 71:141-155. [PMID: 34854954 DOI: 10.1007/s00011-021-01522-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 11/03/2021] [Accepted: 11/03/2021] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE The CagA (cytotoxin-related gene A, CagA) protein is an important factor for the pathogenicity of Helicobacter pylori (H. pylori). Although H. pylori has previously been shown to activate the NLRP3 inflammasome, it remains unclear what role CagA plays in this process. In the current study, we aimed to investigate the effect of CagA on NLRP3 activation and how it is linked to gastric cancer cell migration and invasion. METHODS CagA positive H. pylori strain (Hp/CagA+) and CagA gene knockout mutant (Hp/ΔCagA) infected and the pcDNA3.1/CagA plasmid transfected gastric epithelial cell lines, respectively. The morphological alterations of cells under a microscope; the NLRP3 inflammasome-related markers: NLRP3, caspase-1, and ASC protein levels were detected by Western blot, IL-1β and IL-18 levels were determined by ELISA; cell migration and invasion were determined by transwell assay; and the pyroptosis levels and intracellular ROS were determined by flow cytometry analysis. Then, pretreated with 5 mM NAC for 2 h and subsequently transfected with the pcDNA3.1/CagA plasmid for 48 h, the effects of NAC pretreatment on CagA-induced NLRP3 inflammasome-related markers expression and cell pyroptosis were examined, finally assessed the effect of CagA on migration and invasion in NLRP3-silenced cells. RESULTS We found that Hp/CagA+ strain infection and pcDNA3.1/CagA vector transfection result in NLRP3 inflammasome activation, generation of intracellular ROS, and increased invasion and migration of gastric cancer cells. Moreover, we found that ROS inhibition via NAC effectively blocks NLRP3 activation and pyroptosis. Silencing of NLRP3 reduces the effects of CagA on gastric cancer cell migration and invasion. CONCLUSION Our study shows that CagA can promote the invasion and migration of gastric cancer cells by activating NLRP3 inflammasome pathway. These findings provide novel insights into the mechanism of gastric cancer induction by H. pylori.
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Affiliation(s)
- XiaoYi Zhang
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University), Ministry of Education, Guiyang, China.,Guiyang Maternity and Child Health Care Hospital, Guiyang, Guizhou Province, China
| | - Chao Li
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University), Ministry of Education, Guiyang, China.,Guiyang Maternity and Child Health Care Hospital, Guiyang, Guizhou Province, China
| | - Dingyu Chen
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University), Ministry of Education, Guiyang, China.,Key Laboratory of Medical Molecular Biology (Guizhou Medical University), No. 9, Beijing Road, Guiyang, 550004, China
| | - XiaoFeng He
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University), Ministry of Education, Guiyang, China.,Key Laboratory of Medical Molecular Biology (Guizhou Medical University), No. 9, Beijing Road, Guiyang, 550004, China
| | - Yan Zhao
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University), Ministry of Education, Guiyang, China.,Key Laboratory of Medical Molecular Biology (Guizhou Medical University), No. 9, Beijing Road, Guiyang, 550004, China
| | - LiYa Bao
- Affiliated Hospital, Guiyang Medical University, No. 9, Beijing Road, Guiyang, 550004, China
| | - Qingrong Wang
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University), Ministry of Education, Guiyang, China.,Key Laboratory of Medical Molecular Biology (Guizhou Medical University), No. 9, Beijing Road, Guiyang, 550004, China
| | - JianJiang Zhou
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University), Ministry of Education, Guiyang, China. .,Key Laboratory of Medical Molecular Biology (Guizhou Medical University), No. 9, Beijing Road, Guiyang, 550004, China. .,Affiliated Hospital, Guiyang Medical University, No. 9, Beijing Road, Guiyang, 550004, China.
| | - Yuan Xie
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University), Ministry of Education, Guiyang, China. .,Key Laboratory of Medical Molecular Biology (Guizhou Medical University), No. 9, Beijing Road, Guiyang, 550004, China.
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22
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NLRP3 Inflammasome Expression in Gingival Crevicular Fluid of Patients with Periodontitis and Chronic Hepatitis C. Mediators Inflamm 2021; 2021:6917919. [PMID: 34840527 PMCID: PMC8626199 DOI: 10.1155/2021/6917919] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/01/2021] [Accepted: 11/10/2021] [Indexed: 12/13/2022] Open
Abstract
The study is aimed at assessing the impact that periodontal disease and chronic hepatitis C could have on gingival crevicular fluid levels of the NLRP3 inflammasome, caspase-1 (CASP-1), and interleukin-18 (IL-18) and at evaluating whether the increased local inflammatory reaction with clinical periodontal consequences is correlated to their upregulation. Patients were divided into four groups, according to their periodontal status and previously diagnosed hepatitis C, as follows: (i) CHC group, chronic hepatitis C patients; (ii) P group, periodontal disease patients, systemically healthy; (iii) CHC + P group, patients suffering from both conditions; and (iv) H group, systemically and periodontally healthy controls. Gingival crevicular samples were collected for quantitative analysis of the NLRP3 inflammasome, CASP-1, and IL-18. CHC + P patients expressed the worse periodontal status and the highest NLRP3, CASP-1, and IL-18 levels, the difference being statistically significant (p < 0.05). The P group patients also expressed significantly more elevated NLRP3, CASP-1, and IL-18 levels, as compared to nonperiodontal patients (CHC and H groups). Chronic hepatitis C and periodontal disease could have a significant influence on the upregulation of NLRP3 inflammasome and its components, possibly contributing to an increased local inflammatory reaction and clinical periodontal consequences.
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23
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Tetrahydropalmatine Alleviates Hyperlipidemia by Regulating Lipid Peroxidation, Endoplasmic Reticulum Stress, and Inflammasome Activation by Inhibiting the TLR4-NF- κB Pathway. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:6614985. [PMID: 34760017 PMCID: PMC8575622 DOI: 10.1155/2021/6614985] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 08/04/2021] [Indexed: 01/11/2023]
Abstract
Hyperlipidemia (HLP) is a lipid metabolism disorder that can induce a series of cardiovascular and cerebrovascular diseases, such as atherosclerosis, myocardial infarction, coronary heart disease, and stroke, which seriously threaten human health. Tetrahydropalmatine (THP) is a component of the plant Rhizoma corydalis and has been shown to exert hepatoprotective and anti-inflammatory effects in HLP. However, whether THP regulates lipid peroxidation in hyperlipidemia, endoplasmic reticulum (ER) stress and inflammasome activation and even the underlying protective mechanism against HLP remain unclear. An animal model of HLP was established by feeding a high-fat diet to golden hamsters. Our results showed that THP reduced the body weight and adipose index; decreased the serum content of ALT, AST, TC, TG, and LDL-C; decreased the free fatty acid hepatic lipid content (liver index, TC, TG, and free fatty acid); inhibited oxidative stress and lipid peroxidation; extenuated hepatic steatosis; and inhibited ER stress and inflammasome activation in high-fat diet-fed golden hamsters. In addition, for the first time, the potential mechanism by which THP protects against HLP through the TLR4-NF-κB signaling pathway was demonstrated. In conclusion, these data indicate that THP attenuates HLP through a variety of effects, including antioxidative stress, anti-ER stress, and anti-inflammatory effects. In addition, THP also inhibited the TLR4-NF-κB signaling pathway in golden hamsters.
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24
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An Epigenetic Insight into NLRP3 Inflammasome Activation in Inflammation-Related Processes. Biomedicines 2021; 9:biomedicines9111614. [PMID: 34829842 PMCID: PMC8615487 DOI: 10.3390/biomedicines9111614] [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: 09/30/2021] [Revised: 10/25/2021] [Accepted: 10/29/2021] [Indexed: 12/13/2022] Open
Abstract
Aberrant NLRP3 (NOD-, LRR-, and pyrin domain-containing protein 3) inflammasome activation in innate immune cells, triggered by diverse cellular danger signals, leads to the production of inflammatory cytokines (IL-1β and IL-18) and cell death by pyroptosis. These processes are involved in the pathogenesis of a wide range of diseases such as autoimmune, neurodegenerative, renal, metabolic, vascular diseases and cancer, and during physiological processes such as aging. Epigenetic dynamics mediated by changes in DNA methylation patterns, chromatin assembly and non-coding RNA expression are key regulators of the expression of inflammasome components and its further activation. Here, we review the role of the epigenome in the expression, assembly, and activation of the NLRP3 inflammasome, providing a critical overview of its involvement in the disease and discussing how targeting these mechanisms by epigenetic treatments could be a useful strategy for controlling NLRP3-related inflammatory diseases.
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25
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Meng C, Gu C, He S, Su T, Lhamo T, Draga D, Qiu Q. Pyroptosis in the Retinal Neurovascular Unit: New Insights Into Diabetic Retinopathy. Front Immunol 2021; 12:763092. [PMID: 34737754 PMCID: PMC8560732 DOI: 10.3389/fimmu.2021.763092] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 09/28/2021] [Indexed: 12/15/2022] Open
Abstract
Diabetic retinopathy (DR) is prevalent among people with long-term diabetes mellitus (DM) and remains the leading cause of visual impairment in working-aged people. DR is related to chronic low-level inflammatory reactions. Pyroptosis is an emerging type of inflammatory cell death mediated by gasdermin D (GSDMD), NOD-like receptors and inflammatory caspases that promote interleukin-1β (IL-1β) and IL-18 release. In addition, the retinal neurovascular unit (NVU) is the functional basis of the retina. Recent studies have shown that pyroptosis may participate in the destruction of retinal NVU cells in simulated hyperglycemic DR environments. In this review, we will clarify the importance of pyroptosis in the retinal NVU during the development of DR.
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Affiliation(s)
- Chunren Meng
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- National Clinical Research Center for Eye Diseases; Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, China
| | - Chufeng Gu
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- National Clinical Research Center for Eye Diseases; Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, China
| | - Shuai He
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- National Clinical Research Center for Eye Diseases; Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, China
| | - Tong Su
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- National Clinical Research Center for Eye Diseases; Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, China
| | - Thashi Lhamo
- Department of Ophthalmology, Shigatse People’s Hospital, Shigatse, China
| | - Deji Draga
- Department of Ophthalmology, Shigatse People’s Hospital, Shigatse, China
| | - Qinghua Qiu
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- National Clinical Research Center for Eye Diseases; Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, China
- Department of Ophthalmology, Shigatse People’s Hospital, Shigatse, China
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Das B, Sarkar C, Rawat VS, Kalita D, Deka S, Agnihotri A. Promise of the NLRP3 Inflammasome Inhibitors in In Vivo Disease Models. Molecules 2021; 26:4996. [PMID: 34443594 PMCID: PMC8399941 DOI: 10.3390/molecules26164996] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 07/28/2021] [Accepted: 08/10/2021] [Indexed: 12/26/2022] Open
Abstract
Nucleotide-binding oligomerization domain NOD-like receptors (NLRs) are conserved cytosolic pattern recognition receptors (PRRs) that track the intracellular milieu for the existence of infection, disease-causing microbes, as well as metabolic distresses. The NLRP3 inflammasome agglomerates are consequent to sensing a wide spectrum of pathogen-associated molecular patterns (PAMPs) and danger-associated molecular patterns (DAMPs). Certain members of the NLR family have been documented to lump into multimolecular conglomerates called inflammasomes, which are inherently linked to stimulation of the cysteine protease caspase-1. Following activation, caspase-1 severs the proinflammatory cytokines interleukin (IL)-1β and IL-18 to their biologically active forms, with consequent commencement of caspase-1-associated pyroptosis. This type of cell death by pyroptosis epitomizes a leading pathway of inflammation. Accumulating scientific documentation has recorded overstimulation of NLRP3 (NOD-like receptor protein 3) inflammasome involvement in a wide array of inflammatory conditions. IL-1β is an archetypic inflammatory cytokine implicated in multiple types of inflammatory maladies. Approaches to impede IL-1β's actions are possible, and their therapeutic effects have been clinically demonstrated; nevertheless, such strategies are associated with certain constraints. For instance, treatments that focus on systemically negating IL-1β (i.e., anakinra, rilonacept, and canakinumab) have been reported to result in an escalated peril of infections. Therefore, given the therapeutic promise of an NLRP3 inhibitor, the concerted escalated venture of the scientific sorority in the advancement of small molecules focusing on direct NLRP3 inflammasome inhibition is quite predictable.
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Affiliation(s)
- Biswadeep Das
- Department of Pharmacology, All India Institute of Medical Sciences (AIIMS), Virbhadra Road, Rishikesh 249203, Uttarakhand, India;
| | - Chayna Sarkar
- Department of Clinical Pharmacology & Therapeutics, North Eastern Indira Gandhi Regional Institute of Health and Medical Sciences (NEIGRIHMS), Mawdiangdiang, Shillong 793018, Meghalaya, India;
| | - Vikram Singh Rawat
- Department of Psychiatry, All India Institute of Medical Sciences (AIIMS), Virbhadra Road, Rishikesh 249203, Uttarakhand, India;
| | - Deepjyoti Kalita
- Department of Microbiology, All India Institute of Medical Sciences (AIIMS), Virbhadra Road, Rishikesh 249203, Uttarakhand, India; (D.K.); (S.D.)
| | - Sangeeta Deka
- Department of Microbiology, All India Institute of Medical Sciences (AIIMS), Virbhadra Road, Rishikesh 249203, Uttarakhand, India; (D.K.); (S.D.)
| | - Akash Agnihotri
- Department of Pharmacology, All India Institute of Medical Sciences (AIIMS), Virbhadra Road, Rishikesh 249203, Uttarakhand, India;
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27
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Al-Daghri NM, Wani K, AlHarthi H, Alghamdi A, Alnaami AM, Yakout SM. Sex-Specific Signature in the Circulating NLRP3 Levels of Saudi Adults with Metabolic Syndrome. J Clin Med 2021; 10:jcm10153288. [PMID: 34362072 PMCID: PMC8347773 DOI: 10.3390/jcm10153288] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 07/14/2021] [Accepted: 07/23/2021] [Indexed: 12/27/2022] Open
Abstract
Recently, inflammasomes such as NLRP3 as cytosolic pattern-recognition receptors have been implicated in the development of inflammation; however, limited investigations report the circulating levels of this protein. The objective, thus, was to investigative circulating NLRP3 levels in Saudi patients with a low-grade inflammatory disorder called metabolic syndrome (MetS). Two hundred Saudi adults aged 30–65, with or without MetS diagnosed on the basis of National Cholesterol Education Programme Adult Treatment Panel III (NCEP ATP III) criteria, were randomly recruited. Five MetS components were established according to the diagnostic criteria in the study subjects. Circulating levels of NLRP3 and known inflammation markers, such as tumor necrosis factor α (TNF-α), C-reactive protein (CRP) and interleukins (IL-1β and IL-18), were measured in the blood samples taken from the study subjects. Gender-based analysis showed a significant elevated circulating levels of NLRP3 in non-MetS men compared to non-MetS females (p < 0.001). Moreover, an increase in circulating levels of NLRP3 with a number of MetS components (p = 0.038) was observed only in females. A significant positive correlation of NLRP3 levels with age (r = 0.20, p = 0.04), BMI (r = 0.32, p < 0.01) and waist (r = 0.24, p = 0.02) and a significant negative correlation between NLRP3 and HDL-cholesterol (r= −0.21, p = 0.03) were also observed in females. Logistic regression analysis also yielded a sex-specific positive association of NLRP3 with MetS in females, with this association influenced mostly by central obesity and dyslipidemia components of MetS. In conclusion, this study suggests a sexual disparity in the circulating levels of NLRP3, with a trend of increasing circulating NLRP3 levels with increasing MetS components observed only in females, influenced mostly by adiposity and dyslipidemia components of MetS. Longitudinal studies with a larger sample size and investigating sex-specific hormones with NLRP3 would be needed to establish a causal relationship of NLRP3 with MetS.
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Affiliation(s)
- Nasser M. Al-Daghri
- Biochemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (H.A.); (A.A.)
- Chair for Biomarkers of Chronic Diseases, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (K.W.); (A.M.A.); (S.M.Y.)
- Correspondence: ; Tel.: +966-14675939
| | - Kaiser Wani
- Chair for Biomarkers of Chronic Diseases, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (K.W.); (A.M.A.); (S.M.Y.)
| | - Hind AlHarthi
- Biochemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (H.A.); (A.A.)
| | - Amani Alghamdi
- Biochemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (H.A.); (A.A.)
| | - Abdullah M. Alnaami
- Chair for Biomarkers of Chronic Diseases, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (K.W.); (A.M.A.); (S.M.Y.)
| | - Sobhy M. Yakout
- Chair for Biomarkers of Chronic Diseases, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (K.W.); (A.M.A.); (S.M.Y.)
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28
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Liu T, Wang X, Guo F, Sun X, Yuan K, Wang Q, Lan C. Lysophosphatidylcholine induces apoptosis and inflammatory damage in brain microvascular endothelial cells via GPR4-mediated NLRP3 inflammasome activation. Toxicol In Vitro 2021; 77:105227. [PMID: 34293432 DOI: 10.1016/j.tiv.2021.105227] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 06/25/2021] [Accepted: 07/15/2021] [Indexed: 01/14/2023]
Abstract
Lysophosphatidylcholine (LPC), as the main active component of oxidized low-density lipoproteins (ox-LDLs), has significant effects in cerebrovascular disease. However, the complex mechanism by which LPC functions in brain microvascular endothelial cells (BMECs) is not clearly understood. In this study, BMECs were transfected with G protein-coupled receptor 4 (GPR4) siRNA or an NLRP3-overexpression plasmid, and GPR4 expression was identified by RT-qPCR and western blotting; IL-1β, IL-18, and IL-33 levels were evaluated by ELISA. Apoptosis was monitored by flow cytometry and Hoechst staining, while Caspase 3, ASC, NLRP3, and GPR4 protein expression were examined by western blotting. Our results showed that LPC significantly increased the levels of inflammatory cytokines (IL-1β, IL-18, and IL-33) and markedly induced apoptosis and NLRP3 inflammasome activation in BMECs. Moreover, LPC notably upregulated GPR4 in BMECs, and knockdown of GPR4 significantly attenuated the effects of LPC in BMECs. Above all, we also proved that LPC induced apoptosis and inflammatory injury in BMECs by causing GPR4 to activate NLRP3 inflammasomes. Therefore, GPR4-mediated activation of NLRP3 inflammasomes might be the underlying mechanism by which LPC promotes the progression of cerebrovascular disease. In summary we found that LPC is an important pathogenic factor in cerebrovascular disease, and can induce GPR4 to active NLRP3 inflammasomes.
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Affiliation(s)
- Tao Liu
- Department of Neurology, University of Chinese Academy of Sciences Shenzhen Hospital (Guang ming), No. 39 Huaxia Road, Guangming District, Shenzhen 518107, China
| | - Xuegang Wang
- Department of Hepatology, The People's Hospital of Bao an, No. 118, Longjing Second Road, Baoan District, Shenzhen 518107, China
| | - Feng Guo
- Department of Neurology, University of Chinese Academy of Sciences Shenzhen Hospital (Guang ming), No. 39 Huaxia Road, Guangming District, Shenzhen 518107, China
| | - Xiaobo Sun
- Department of Laboratory Diagnostics, Changhai Hospital, No. 168 Changhai Road, Yangpu District, Shanghai 200433, China
| | - Kunxiong Yuan
- Department of Neurology, University of Chinese Academy of Sciences Shenzhen Hospital (Guang ming), No. 39 Huaxia Road, Guangming District, Shenzhen 518107, China
| | - Qingyong Wang
- Department of Neurology, University of Chinese Academy of Sciences Shenzhen Hospital (Guang ming), No. 39 Huaxia Road, Guangming District, Shenzhen 518107, China
| | - Chunwei Lan
- Department of Neurology, University of Chinese Academy of Sciences Shenzhen Hospital (Guang ming), No. 39 Huaxia Road, Guangming District, Shenzhen 518107, China.
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29
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Cui W, Chen S, Chi Z, Guo X, Zhang X, Zhong Y, Han H, Yao K. Screening-based identification of xanthone as a novel NLRP3 inflammasome inhibitor via metabolic reprogramming. Clin Transl Med 2021; 11:e496. [PMID: 34323410 PMCID: PMC8288006 DOI: 10.1002/ctm2.496] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/21/2021] [Accepted: 06/27/2021] [Indexed: 12/24/2022] Open
Affiliation(s)
- Wenyu Cui
- Eye Center of the 2nd Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, China.,Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, Zhejiang Province, China
| | - Sheng Chen
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.,Department of Colorectal Surgery and Oncology, Key Laboratory of Cancer Prevention and Intervention, Ministry of Education, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, China.,Cancer Center, Zhejiang University, Hangzhou, Zhejiang Province, China
| | - Zhexu Chi
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Xingchen Guo
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei Province, China
| | - Xiaobo Zhang
- Eye Center of the 2nd Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, China.,Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, Zhejiang Province, China
| | - Yueyang Zhong
- Eye Center of the 2nd Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, China.,Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, Zhejiang Province, China
| | - Haijie Han
- Eye Center of the 2nd Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, China.,Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, Zhejiang Province, China
| | - Ke Yao
- Eye Center of the 2nd Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, China.,Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, Zhejiang Province, China
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30
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Jones GH, Vecera CM, Pinjari OF, Machado-Vieira R. Inflammatory signaling mechanisms in bipolar disorder. J Biomed Sci 2021; 28:45. [PMID: 34112182 PMCID: PMC8194019 DOI: 10.1186/s12929-021-00742-6] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 06/08/2021] [Indexed: 12/12/2022] Open
Abstract
Bipolar disorder is a decidedly heterogeneous and multifactorial disease, with a high individual and societal burden. While not all patients display overt markers of elevated inflammation, significant evidence suggests that aberrant immune signaling contributes to all stages of the disease, and likely explains the elevated rates of comorbid inflammatory illnesses seen in this population. While individual systems have been intensely studied and targeted, a relative paucity of attention has been given to the interconnecting role of inflammatory signals therein. This review presents an updated overview of some of the most prominent pathophysiologic mechanisms in bipolar disorder, from mitochondrial, endoplasmic reticular, and calcium homeostasis, to purinergic, kynurenic, and hormonal/neurotransmitter signaling, showing inflammation to act as a powerful nexus between these systems. Several areas with a high degree of mechanistic convergence within this paradigm are highlighted to present promising future targets for therapeutic development and screening.
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Affiliation(s)
- Gregory H Jones
- Department of Psychiatry and Behavioral Sciences, University of Texas Health Science Center at Houston (UTHealth), 1941 East Road, Houston, TX, 77054, USA.
| | - Courtney M Vecera
- Department of Psychiatry and Behavioral Sciences, University of Texas Health Science Center at Houston (UTHealth), 1941 East Road, Houston, TX, 77054, USA
| | - Omar F Pinjari
- Department of Psychiatry and Behavioral Sciences, University of Texas Health Science Center at Houston (UTHealth), 1941 East Road, Houston, TX, 77054, USA
| | - Rodrigo Machado-Vieira
- Department of Psychiatry and Behavioral Sciences, University of Texas Health Science Center at Houston (UTHealth), 1941 East Road, Houston, TX, 77054, USA
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Liu QY, Zhuang Y, Song XR, Niu Q, Sun QS, Li XN, Li N, Liu BL, Huang F, Qiu ZX. Tanshinone IIA prevents LPS-induced inflammatory responses in mice via inactivation of succinate dehydrogenase in macrophages. Acta Pharmacol Sin 2021; 42:987-997. [PMID: 33028985 PMCID: PMC8149828 DOI: 10.1038/s41401-020-00535-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Accepted: 09/10/2020] [Indexed: 12/12/2022] Open
Abstract
Metabolic reprogramming is associated with NLRP3 inflammasome activation in activated macrophages, contributing to inflammatory responses. Tanshinone IIA (Tan-IIA) is a major constituent from Salvia miltiorrhiza Bunge, which exhibits anti-inflammatory activity. In this study, we investigated the effects of Tan-IIA on inflammation in macrophages in focus on its regulation of metabolism and redox state. In lipopolysaccharides (LPS)-stimulated mouse bone marrow-derived macrophages (BMDMs), Tan-IIA (10 μM) significantly decreased succinate-boosted IL-1β and IL-6 production, accompanied by upregulation of IL-1RA and IL-10 release via inhibiting succinate dehydrogenase (SDH). Tan-IIA concentration dependently inhibited SDH activity with an estimated IC50 of 4.47 μM in LPS-activated BMDMs. Tan-IIA decreased succinate accumulation, suppressed mitochondrial reactive oxygen species production, thus preventing hypoxia-inducible factor-1α (HIF-1α) induction. Consequently, Tan-IIA reduced glycolysis and protected the activity of Sirtuin2 (Sirt2), an NAD+-dependent protein deacetylase, by raising the ratio of NAD+/NADH in activated macrophages. The acetylation of α-tubulin was required for the assembly of NLRP3 inflammasome; Tan-IIA increased the binding of Sirt2 to α-tubulin, and thus reduced the acetylation of α-tubulin, thus impairing this process. Sirt2 knockdown or application of Sirt2 inhibitor AGK-2 (10 μM) neutralized the effects of Tan-IIA, suggesting that Tan-IIA inactivated NLRP3 inflammasome in a manner dependent on Sirt2 regulation. The anti-inflammatory effects of Tan-IIA were observed in mice subjected to LPS challenge: pre-administration of Tan-IIA (20 mg/kg, ip) significantly attenuated LPS-induced acute inflammatory responses, characterized by elevated IL-1β but reduced IL-10 levels in serum. The peritoneal macrophages isolated from the mice displayed similar metabolic regulation. In conclusion, Tan-IIA reduces HIF-1α induction via SDH inactivation, and preserves Sirt2 activity via downregulation of glycolysis, contributing to suppression of NLRP3 inflammasome activation. This study provides a new insight into the anti-inflammatory action of Tan-IIA from the respect of metabolic and redox regulation.
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Affiliation(s)
- Qiu-Yan Liu
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Yu Zhuang
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Xian-Rui Song
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Qun Niu
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Qiu-Shuang Sun
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Xiao-Nan Li
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, State University of New York at Buffalo, Buffalo, NY, USA
| | - Ning Li
- National Experimental Teaching Demonstration Center of Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Bao-Lin Liu
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Fang Huang
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China.
| | - Zhi-Xia Qiu
- School of Pharmacy, China Pharmaceutical University, Nanjing, 211198, China.
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Zhu LY, Liu C, Li ZR, Niu C, Wu J. NLRP3 deficiency did not attenuate NASH development under high fat calorie diet plus high fructose and glucose in drinking water. J Transl Med 2021; 101:588-599. [PMID: 33526807 DOI: 10.1038/s41374-021-00535-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 12/21/2020] [Accepted: 12/22/2020] [Indexed: 12/27/2022] Open
Abstract
NOD-like receptor protein 3 (NLRP3) promotes the inflammatory response during progression of nonalcoholic fatty liver (NAFL) to nonalcoholic steatohepatitis (NASH). This study aimed to further delineate the role of NLRP3 in NASH development by abolishing its expression in mice. A high-fat and calorie diet plus high fructose and glucose in drinking water (HFCD-HF/G) was used to establish NASH in both wild-type (WT) and NLRP3 knock-out (KO) mice. Hepatocellular injury, hepatic steatosis and fibrosis, as well as inflammatory response and insulin resistance in the liver and epidydimal white adipose tissue (eWAT) were determined. Elevated body weight, liver weight and serum alanine transaminase level, increased hepatic triglyceride accumulation and collagen deposition, and worsened systemic insulin resistance were observed in Nlrp3-/- mice compared to WT mice under HFCD-HF/G feeding. Upregulated hepatic transcription of tumor necrosis factor-α (TNF-α) and monocyte chemotactic protein-1 (MCP-1), and enhanced infiltration of inducible nitric oxide synthase-positive (iNOS+) M1 macrophages were also documented in HFCD-HF/G-fed Nlrp3-/- mice in comparison to HFCD-HF/G-fed WT mice. Moreover, transcription of TNF-α and MCP-1 and infiltration of iNOS+ M1 macrophages were increased in the liver of Nlrp3-/- mice under control diet. NLRP3 deficiency did not attenuate, but instead aggravated NASH development under HFCD-HF/G feeding. The worsened extent of NASH might be attributed to enhanced hepatic MCP-1 expression and M1 macrophage infiltration in Nlrp3-/- mice. Our study points to additional caution when NLRP3 blockade is considered as a therapeutic strategy in the treatment of human NASH.
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Affiliation(s)
- Liu-Yan Zhu
- Department of Medical Microbiology and Parasitology, MOE/NHC/CAMS Key Laboratory of Medical Molecular Virology, School of Basic Medical Sciences, Fudan University Shanghai Medical College, Shanghai, 200032, China
| | - Chang Liu
- Department of Medical Microbiology and Parasitology, MOE/NHC/CAMS Key Laboratory of Medical Molecular Virology, School of Basic Medical Sciences, Fudan University Shanghai Medical College, Shanghai, 200032, China
| | - Zong-Rui Li
- Department of Medical Microbiology and Parasitology, MOE/NHC/CAMS Key Laboratory of Medical Molecular Virology, School of Basic Medical Sciences, Fudan University Shanghai Medical College, Shanghai, 200032, China
| | - Chen Niu
- Department of Medical Microbiology and Parasitology, MOE/NHC/CAMS Key Laboratory of Medical Molecular Virology, School of Basic Medical Sciences, Fudan University Shanghai Medical College, Shanghai, 200032, China
| | - Jian Wu
- Department of Medical Microbiology and Parasitology, MOE/NHC/CAMS Key Laboratory of Medical Molecular Virology, School of Basic Medical Sciences, Fudan University Shanghai Medical College, Shanghai, 200032, China.
- Department of Gastroenterology & Hepatology, Zhongshan Hospital of Fudan University, Shanghai, 200032, China.
- Shanghai Institute of Liver Diseases, Fudan University Shanghai Medical College, Shanghai, 200032, China.
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Implication of the NLRP3 Inflammasome in Bovine Age-Related Sarcopenia. Int J Mol Sci 2021; 22:ijms22073609. [PMID: 33808510 PMCID: PMC8036417 DOI: 10.3390/ijms22073609] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 03/18/2021] [Accepted: 03/29/2021] [Indexed: 12/20/2022] Open
Abstract
Sarcopenia is defined as the age-related loss of skeletal muscle mass, quality, and strength. The pathophysiological mechanisms underlying sarcopenia are still not completely understood. The aim of this work was to evaluate, for the first time, the expression of NLRP3 inflammasome in bovine skeletal muscle in order to investigate the hypothesis that inflammasome activation may trigger and sustain a pro-inflammatory environment leading to sarcopenia. Samples of skeletal muscle were collected from 60 cattle belonging to three age-based groups. Morphologic, immunohistochemical and molecular analysis were performed to assess the presence of age-related pathologic changes and chronic inflammation, the expression of NLRP3 inflammasome and to determine the levels of interleukin-1β, interleukin-18 and tumor necrosis factor alpha in muscle tissue. Our results revealed the presence of morphologic sarcopenia hallmark, chronic lymphocytic inflammation and a type II fibers-selective NLRP3 expression associated to a significant decreased number of immunolabeled-fibers in aged animals. Moreover, we found a statistically significant age-related increase of pro-inflammatory cytokines such as interleukin-1β and interleukin-18 suggesting the activation of NLRP3 inflammasome. Taken together, our data suggest that NLRP3 inflammasome components may be normally expressed in skeletal muscle, but its priming and activation during aging may contribute to enhance a pro-inflammatory environment altering normal muscular anabolism and metabolism.
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Angosto-Bazarra D, Molina-López C, Peñín-Franch A, Hurtado-Navarro L, Pelegrín P. Techniques to Study Inflammasome Activation and Inhibition by Small Molecules. Molecules 2021; 26:1704. [PMID: 33803783 PMCID: PMC8003184 DOI: 10.3390/molecules26061704] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 03/08/2021] [Accepted: 03/15/2021] [Indexed: 12/18/2022] Open
Abstract
Inflammasomes are immune cytosolic oligomers involved in the initiation and progression of multiple pathologies and diseases. The tight regulation of these immune sensors is necessary to control an optimal inflammatory response and recover organism homeostasis. Prolonged activation of inflammasomes result in the development of chronic inflammatory diseases, and the use of small drug-like inhibitory molecules are emerging as promising anti-inflammatory therapies. Different aspects have to be taken in consideration when designing inflammasome inhibitors. This review summarizes the different techniques that can be used to study the mechanism of action of potential inflammasome inhibitory molecules.
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Affiliation(s)
- Diego Angosto-Bazarra
- Línea de Inflamación Molecular, Instituto Murciano de Investigación Biosanitaria IMIB-Arrixaca, Hospital Clínico Universitario Virgen de la Arrixaca, 30120 Murcia, Spain; (C.M.-L.); (A.P.-F.); (L.H.-N.)
| | | | | | | | - Pablo Pelegrín
- Línea de Inflamación Molecular, Instituto Murciano de Investigación Biosanitaria IMIB-Arrixaca, Hospital Clínico Universitario Virgen de la Arrixaca, 30120 Murcia, Spain; (C.M.-L.); (A.P.-F.); (L.H.-N.)
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NLRP3-mediated pyroptosis aggravates pressure overload-induced cardiac hypertrophy, fibrosis, and dysfunction in mice: cardioprotective role of irisin. Cell Death Discov 2021; 7:50. [PMID: 33723236 PMCID: PMC7961005 DOI: 10.1038/s41420-021-00434-y] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/31/2021] [Accepted: 02/14/2021] [Indexed: 02/07/2023] Open
Abstract
The exact mechanism of myocardial hypertrophy has not been completely elucidated. NOD-like receptor protein 3 (NLRP3) and the pyroptotic cascade play a critical role in cardiac hypertrophy and inflammation. The myokine irisin can inhibit NLRP3 activation, although its exact mechanism of action is unknown. In this study, we induced cardiac hypertrophy in a mouse model via aortic constriction (TAC) to further explore the pathological role of NLRP3 inflammasome-mediated pyroptosis and the potential therapeutic effects of irisin. Cardiac hypertrophy significantly increased the percentage of apoptotic cells and upregulated IL-1β, cleaved caspase-1, and GSDMD-N that lie downstream of the NLRP3 inflammasome. Subsequently, irisin was co-administered to the TAC mice or angiotensin II (Ang-II)-treated cardiomyocytes to observe whether it could attenuate pyroptosis and cardiac hypertrophy. We established a direct association between pyroptosis and cardiac hypertrophy and found that pharmacological or genetic inhibition of NLRP3 attenuated cardiac hypertrophy. Furthermore, ectopic overexpression of NLRP3 abrogated the cardioprotective effects of irisin. To summarize, pyroptosis is a pathological factor in cardiac hypertrophy, and irisin is a promising therapeutic agent that inhibits NLRP3-mediated pyroptosis of cardiomyocytes.
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Gora IM, Ciechanowska A, Ladyzynski P. NLRP3 Inflammasome at the Interface of Inflammation, Endothelial Dysfunction, and Type 2 Diabetes. Cells 2021; 10:314. [PMID: 33546399 PMCID: PMC7913585 DOI: 10.3390/cells10020314] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 01/24/2021] [Accepted: 01/30/2021] [Indexed: 01/08/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM), accounting for 90-95% cases of diabetes, is characterized by chronic inflammation. The mechanisms that control inflammation activation in T2DM are largely unexplored. Inflammasomes represent significant sensors mediating innate immune responses. The aim of this work is to present a review of links between the NLRP3 inflammasome, endothelial dysfunction, and T2DM. The NLRP3 inflammasome activates caspase-1, which leads to the maturation of pro-inflammatory cytokines interleukin 1β and interleukin 18. In this review, we characterize the structure and functions of NLRP3 inflammasome as well as the most important mechanisms and molecules engaged in its activation. We present evidence of the importance of the endothelial dysfunction as the first key step to activating the inflammasome, which suggests that suppressing the NLRP3 inflammasome could be a new approach in depletion hyperglycemic toxicity and in averting the onset of vascular complications in T2DM. We also demonstrate reports showing that the expression of a few microRNAs that are also known to be involved in either NLRP3 inflammasome activation or endothelial dysfunction is deregulated in T2DM. Collectively, this evidence suggests that T2DM is an inflammatory disease stimulated by pro-inflammatory cytokines. Finally, studies revealing the role of glucose concentration in the activation of NLRP3 inflammasome are analyzed. The more that is known about inflammasomes, the higher the chances to create new, effective therapies for patients suffering from inflammatory diseases. This may offer potential novel therapeutic perspectives in T2DM prevention and treatment.
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Affiliation(s)
- Ilona M. Gora
- Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, Ks. Trojdena 4, 02-109 Warsaw, Poland; (A.C.); (P.L.)
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Structure, Activation and Regulation of NLRP3 and AIM2 Inflammasomes. Int J Mol Sci 2021; 22:ijms22020872. [PMID: 33467177 PMCID: PMC7830601 DOI: 10.3390/ijms22020872] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 12/23/2020] [Accepted: 01/11/2021] [Indexed: 12/12/2022] Open
Abstract
The inflammasome is a three-component (sensor, adaptor, and effector) filamentous signaling platform that shields from multiple pathogenic infections by stimulating the proteolytical maturation of proinflammatory cytokines and pyroptotic cell death. The signaling process initiates with the detection of endogenous and/or external danger signals by specific sensors, followed by the nucleation and polymerization from sensor to downstream adaptor and then to the effector, caspase-1. Aberrant activation of inflammasomes promotes autoinflammatory diseases, cancer, neurodegeneration, and cardiometabolic disorders. Therefore, an equitable level of regulation is required to maintain the equilibrium between inflammasome activation and inhibition. Recent advancement in the structural and mechanistic understanding of inflammasome assembly potentiates the emergence of novel therapeutics against inflammasome-regulated diseases. In this review, we have comprehensively discussed the recent and updated insights into the structure of inflammasome components, their activation, interaction, mechanism of regulation, and finally, the formation of densely packed filamentous inflammasome complex that exists as micron-sized punctum in the cells and mediates the immune responses.
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Jiang N, An J, Yang K, Liu J, Guan C, Ma C, Tang X. NLRP3 Inflammasome: A New Target for Prevention and Control of Osteoporosis? Front Endocrinol (Lausanne) 2021; 12:752546. [PMID: 34646239 PMCID: PMC8502943 DOI: 10.3389/fendo.2021.752546] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 09/13/2021] [Indexed: 01/10/2023] Open
Abstract
Osteoporosis is a systemic bone metabolism disease that often causes complications, such as fractures, and increases the risk of death. The nucleotide-binding oligomerization domain-like-receptor family pyrin domain-containing 3 (NLRP3) inflammasome is an intracellular multiprotein complex that regulates the maturation and secretion of Caspase-1 dependent proinflammatory cytokines interleukin (IL)-1β and IL-18, mediates inflammation, and induces pyroptosis. The chronic inflammatory microenvironment induced by aging or estrogen deficiency activates the NLRP3 inflammasome, promotes inflammatory factor production, and enhances the inflammatory response. We summarize the related research and demonstrate that the NLRP3 inflammasome plays a vital role in the pathogenesis of osteoporosis by affecting the differentiation of osteoblasts and osteoclasts. IL-1β and IL-18 can accelerate osteoclast differentiation by expanding inflammatory response, and can also inhibit the expression of osteogenic related proteins or transcription factors. In vivo and in vitro experiments showed that the overexpression of NLRP3 protein was closely related to aggravated bone resorption and osteogenesis deficiency. In addition, abnormal activation of NLRP3 inflammasome can not only produce inflammation, but also lead to pyroptosis and dysfunction of osteoblasts by upregulating the expression of Caspase-1 and gasdermin D (GSDMD). In conclusion, NLRP3 inflammasome overall not only accelerates bone resorption, but also inhibits bone formation, thus increasing the risk of osteoporosis. Thus, this review highlights the recent studies on the function of NLRP3 inflammasome in osteoporosis, provides information on new strategies for managing osteoporosis, and investigates the ideal therapeutic target to treat osteoporosis.
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Affiliation(s)
- Na Jiang
- The First Clinical Medical College of Lanzhou University, Lanzhou, China
| | - Jinyang An
- The First Clinical Medical College of Lanzhou University, Lanzhou, China
| | - Kuan Yang
- The First Clinical Medical College of Lanzhou University, Lanzhou, China
| | - Jinjin Liu
- The First Clinical Medical College of Lanzhou University, Lanzhou, China
- Department of Endocrinology, The First Hospital of Lanzhou University, Lanzhou, China
| | - Conghui Guan
- The First Clinical Medical College of Lanzhou University, Lanzhou, China
- Department of Endocrinology, The First Hospital of Lanzhou University, Lanzhou, China
| | - Chengxu Ma
- Department of Endocrinology, The First Hospital of Lanzhou University, Lanzhou, China
| | - Xulei Tang
- The First Clinical Medical College of Lanzhou University, Lanzhou, China
- Department of Endocrinology, The First Hospital of Lanzhou University, Lanzhou, China
- *Correspondence: Xulei Tang,
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Zhang H, Zahid A, Ismail H, Tang Y, Jin T, Tao J. An overview of disease models for NLRP3 inflammasome over-activation. Expert Opin Drug Discov 2020; 16:429-446. [PMID: 33131335 DOI: 10.1080/17460441.2021.1844179] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Introduction: Inflammatory reactions, including those mediated by the NLRP3 inflammasome, maintain the body's homeostasis by removing pathogens, repairing damaged tissues, and adapting to stressed environments. However, uncontrolled activation of the NLRP3 inflammasome tends to cause various diseases using different mechanisms. Recently, many inhibitors of the NLRP3 inflammasome have been reported and many are being developed. In order to assess their efficacy, specificity, and mechanism of action, the screening process of inhibitors requires various types of cell and animal models of NLRP3-associated diseases.Areas covered: In the following review, the authors give an overview of the cell and animal models that have been used during the research and development of various inhibitors of the NLRP3 inflammasome.Expert opinion: There are many NLRP3 inflammasome inhibitors, but most of the inhibitors have poor specificity and often influence other inflammatory pathways. The potential risk for cross-reaction is high; therefore, the development of highly specific inhibitors is essential. The selection of appropriate cell and animal models, and combined use of different models for the evaluation of these inhibitors can help to clarify the target specificity and therapeutic effects, which is beneficial for the development and application of drugs targeting the NLRP3 inflammasome.
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Affiliation(s)
- Hongliang Zhang
- Department of Rheumatology and Immunology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Ayesha Zahid
- Division of Molecular Medicine, Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Innate Immunity and Chronic Disease, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Hazrat Ismail
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science. Hefei National Science Center for Physical Sciences at Microscale. University of Science and Technology of China, Hefei, China
| | - Yujie Tang
- Department of Rheumatology and Immunology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Tengchuan Jin
- Department of Rheumatology and Immunology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.,Division of Molecular Medicine, Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Innate Immunity and Chronic Disease, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.,CAS Center for Excellence in Molecular Cell Science, Shanghai, China
| | - Jinhui Tao
- Department of Rheumatology and Immunology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
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Zhang XP, Zhang WT, Qiu Y, Ju MJ, Yang C, Tu GW, Luo Z. Cyclic helix B peptide alleviates sepsis-induced acute lung injury by downregulating NLRP3 inflammasome activation in alveolar macrophages. Int Immunopharmacol 2020; 88:106849. [PMID: 32795894 DOI: 10.1016/j.intimp.2020.106849] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 07/13/2020] [Accepted: 07/26/2020] [Indexed: 02/07/2023]
Abstract
Acute lung injury (ALI) exhibits high clinical morbidity and mortality rates. Our previous study has indicated that the novel proteolysis-resistant cyclic helix B peptide (CHBP) exerts an anti-inflammatory effect in mice with AKI. In the present study, we evaluated the effect of CHBP in an in vivo sepsis-induced ALI model and in vitro using lipopolysaccharide (LPS) and ATP stimulated bone marrow-derived macrophages (BMDMs). For in vivo experiments, mice were randomly divided into three groups: 1) sham; 2) LPS; and 3) LPS + CHBP (n = 6). All relevant data were collected after 18 h. Following CHBP treatment, the lung function of the mice was significantly improved compared to the LPS group. CHBP administration inhibited interleukin (IL)-1β, IL-6, and tumor necrosis factor (TNF)-α production at both the protein and mRNA levels. Additionally, following CHBP treatment, the population of pulmonary macrophages decreased. Simultaneously, the proportion of caspase-1-activated alveolar macrophages was also decreased after CHBP treatment. The protein levels of NLRP3 and cleaved caspase-1 were attenuated in the lung tissue following CHBP treatment. In in vitro experiments, CHBP treatment decreased NLRP3 inflammasome expression and downstream IL-1β secretion, consistent with the in vivo results. In addition, CHBP reversed nuclear factor (NF)-κB and I-κB phosphorylation with a significant dose-dependent effect. Therefore, these findings suggest the potential of CHBP as a therapeutic agent in sepsis-induced ALI owing to inhibition of the NLRP3 inflammasome via the NF-κB pathway in macrophages.
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Affiliation(s)
- Xue-Peng Zhang
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Xuhui District, Shanghai 200032, People's Republic of China
| | - Wei-Tao Zhang
- Department of Urology, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Xuhui District, Shanghai 200032, People's Republic of China; Shanghai Key Laboratory of Organ Transplantation, No. 179 Fenglin Road, Xuhui District, Shanghai 200032, People's Republic of China
| | - Yue Qiu
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Xuhui District, Shanghai 200032, People's Republic of China
| | - Min-Jie Ju
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Xuhui District, Shanghai 200032, People's Republic of China
| | - Cheng Yang
- Department of Urology, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Xuhui District, Shanghai 200032, People's Republic of China; Shanghai Key Laboratory of Organ Transplantation, No. 179 Fenglin Road, Xuhui District, Shanghai 200032, People's Republic of China
| | - Guo-Wei Tu
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Xuhui District, Shanghai 200032, People's Republic of China.
| | - Zhe Luo
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Xuhui District, Shanghai 200032, People's Republic of China; Department of Critical Care Medicine, Xiamen Branch, Zhongshan Hospital, Fudan University, No. 668 Jinghu Road, Huli District, Xiamen 361015, People's Republic of China.
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Zhan JF, Huang HW, Huang C, Hu LL, Xu WW. Long Non-Coding RNA NEAT1 Regulates Pyroptosis in Diabetic Nephropathy via Mediating the miR-34c/NLRP3 Axis. Kidney Blood Press Res 2020; 45:589-602. [PMID: 32721950 DOI: 10.1159/000508372] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 05/02/2020] [Indexed: 12/27/2022] Open
Abstract
INTRODUCTION Diabetic nephropathy (DN) is a serious complication of diabetes mellitus and is considered to be a sterile inflammatory disease. Increasing evidence suggest that pyroptosis and subsequent inflammatory response play a key role in the pathogenesis of DN. However, the underlying cellular and molecular mechanisms responsible for pyroptosis in DN are largely unknown. METHODS The rat models of DN were successfully established by single 65 mg/kg streptozotocin treatment. Glomerular mesangial cells were exposed to 30 mmol/L high glucose media for 48 h to mimic the DN environment in vitro. Gene and protein expressions were determined by quantitative real-time PCR and Western blot. Cell viability and pyroptosis were measured by MTT assay and flow cytometry analysis, respectively. The relationship between lncRNA NEAT1, miR-34c, and Nod-like receptor protein-3 (NLRP3) was confirmed by luciferase reporter assay. RESULTS We found that upregulation of NEAT1 was associated with the increase of pyroptosis in DN models. miR-34c, as a target gene of NEAT1, mediated the effect of NEAT1 on pyroptosis in DN by regulating the expression of NLRP3 as well as the expressions of caspase-1 and interleukin-1β. Either miR-34c inhibition or NLRP3 overexpression could reverse the accentuation of pyroptosis and inflammation by sh-NEAT1 transfection in the in vitro model of DN. CONCLUSIONS Our findings suggested NEAT1 and its target gene miR-34c regulated cell pyroptosis via mediating NLRP3 in DN, providing new insights into understanding the molecular mechanisms of pyroptosis in the pathogenesis of DN.
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Affiliation(s)
- Jin-Feng Zhan
- Medical Examination Center, the Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Hong-Wei Huang
- Medical Examination Center, the Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Chong Huang
- Department of Nephrology, the Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Li-Li Hu
- Department of Nephrology, the Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Wen-Wei Xu
- Institute of Clinical Pharmacology, Nanchang University, Nanchang, China,
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Liao T, Ding L, Wu P, Zhang L, Li X, Xu B, Zhang H, Ma Z, Xiao Y, Wang P. Chrysin Attenuates the NLRP3 Inflammasome Cascade to Reduce Synovitis and Pain in KOA Rats. DRUG DESIGN DEVELOPMENT AND THERAPY 2020; 14:3015-3027. [PMID: 32801641 PMCID: PMC7396814 DOI: 10.2147/dddt.s261216] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Accepted: 07/17/2020] [Indexed: 12/13/2022]
Abstract
Purpose Our recent reports have revealed that inhibiting NLRP3 activation reduces synovial inflammation and fibrosis in knee osteoarthritis (KOA). Synovial inflammation is involved the entire process of KOA and promotes the progression of KOA. Natural flavonoid Chrysin from Scutellariae Radix, a traditional Chinese medicine, exhibits multifarious biological activities and potentially has protective activity against osteoarthritis. However, the mechanism of Chrysin in the treatment of synovial inflammation remains elusive. The purpose of our research was to explore the anti-inflammatory effects of Chrysin on KOA, which was induced by monoiodoacetic acid (MIA) in rats by targeting the NLRP3 inflammasome in the hopes of identifying an effective drug to treat KOA. Methods The MIA-induced KOA model was used to evaluate the cold pain threshold and paw withdrawal threshold (PWT) of joints after MIA (40 mg/mL) injection into the knee joints. Microscopically, we used LPS (5 ug/mL) and ATP (4 mmol/L) to stimulate fibroblast-like synovial cells (FLSs) to explore the underlying mechanisms and effects of Chrysin. Two staining methods, H&E and Sirius Red, were applied to assess histopathological changes in synovial membranes. Cellular signal transduction was determined by qRT-PCR and WB. Cytokine expression (inflammatory cytokines and pain-related cytokines) was detected by ELISA. The degree of chronic inflammatory pain was evaluated by c-Fos immunofluorescence. Results The results showed that Chrysin not only attenuated synovial inflammation but also reduced the secretion of pain-related factors and increased the PWT and cold pain threshold in rats. Chrysin also inhibited NLRP3 inflammasome activation and increased IL-1β levels to alleviate the synovitis. Conclusion Chrysin can relieve knee synovial inflammation and improve pain behavior in KOA rats, which may be related to the ability of Chrysin to inhibit NLRP3 inflammasome activation. Therefore, Chrysin may be developed as a new drug for the treatment of KOA.
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Affiliation(s)
- Taiyang Liao
- Department of Orthopedics, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China.,Jiangsu Province Hospital of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China.,Key Laboratory for Metabolic Diseases in Chinese Medicine, First College of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China
| | - Liang Ding
- Department of Orthopedics, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China.,Jiangsu Province Hospital of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China
| | - Peng Wu
- Department of Orthopedics, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China.,Jiangsu Province Hospital of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China.,Key Laboratory for Metabolic Diseases in Chinese Medicine, First College of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China
| | - Li Zhang
- Department of Orthopedics, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China.,Jiangsu Province Hospital of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China.,Key Laboratory for Metabolic Diseases in Chinese Medicine, First College of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China
| | - Xiaochen Li
- Department of Orthopedics, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China.,Jiangsu Province Hospital of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China.,Key Laboratory for Metabolic Diseases in Chinese Medicine, First College of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China
| | - Bo Xu
- Department of Orthopedics, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China.,Jiangsu Province Hospital of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China.,Key Laboratory for Metabolic Diseases in Chinese Medicine, First College of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China
| | - Haosheng Zhang
- Department of Orthopedics, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China.,Jiangsu Province Hospital of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China.,Key Laboratory for Metabolic Diseases in Chinese Medicine, First College of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China
| | - Zhenyuan Ma
- Department of Orthopedics, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China.,Jiangsu Province Hospital of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China.,Key Laboratory for Metabolic Diseases in Chinese Medicine, First College of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China
| | - Yancheng Xiao
- Department of Orthopedics, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China.,Jiangsu Province Hospital of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China.,Key Laboratory for Metabolic Diseases in Chinese Medicine, First College of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China
| | - Peimin Wang
- Department of Orthopedics, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China.,Jiangsu Province Hospital of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China
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Wang Y, Zhang M, Sun Y, Wang X, Song Z, Li H, Liu K, Li Z. Role of short-wavelength blue light in the formation of cataracts and the expression of caspase-1, caspase-11, Gasdermin D in rat lens epithelial cells: insights into a novel pathogenic mmechanism of cataracts. BMC Ophthalmol 2020; 20:289. [PMID: 32669096 PMCID: PMC7364504 DOI: 10.1186/s12886-020-01565-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 07/10/2020] [Indexed: 01/23/2023] Open
Abstract
Background With the popularity of blue-rich light-emitting diode (LED)-backlit display devices, our eyes are now exposed to more short-wavelength blue light than they were in the past. The goal of this study was to investigate the pathogenesis of cataracts after short-wavelength light exposure. Methods Sprague-Dawley (SD) rats were selected and randomly divided into a control group (10 rats each for the 4-, 8-, and 12-week groups) and an experimental group (10 rats each for the 4-, 8-, and 12-week groups). The rats in the experimental group were exposed to a short-wavelength blue LED lamp for 12 h per day. After exposure to the blue LED lamp, the rats were maintained in total darkness for 12 h, after which a 12-h light/dark cycle was resumed. The intensity of the lamp was 3000 lx. At the end of the short-wavelength blue LED lamp exposure (for 4, 8, and 12 weeks), the expression levels of caspase-1, caspase-11 and gasdermin D (GSDMD) were examined in rat lens epithelial cells (LECs) using qRT-PCR and Western blot analyses. An illuminance of 2500 lx was used to study the potential effect of blue LED light on HLE-B3 hLECs in vitro. AC-YVAD-CMK, a caspase-1 inhibitor, was used to confirm the pyroptosis of LECs by flow cytometry. Results After 6 weeks, cataracts developed in the experimental rats (4/20 eyes). The clarity of the lens gradually worsened with the duration of exposure. Twelve weeks later, all of the rat eyes had developed cataracts. The expression levels of caspase-1, caspase-11 and GSDMD at 4, 8, and 12 weeks were significantly higher in the samples from rats exposed to a short-wavelength blue LED lamp than in the samples from control rats (p<0.05). The proportions of double-positive hLECs were significantly increased in the 5-h and 10-h short-wavelength blue light exposure subgroups compared with the 5-h and 10-h caspase-1 inhibitor subgroups (p < 0.05). Conclusion The data indicate that pyroptosis plays a key role in cataract induction after short-wavelength blue light exposure. This study might provide new insights into a novel pathogenic mechanism of cataracts.
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Affiliation(s)
- Yamin Wang
- Department of Ophthalmology, the First Affiliated Hospital, Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, China
| | - Min Zhang
- Department of Ophthalmology, the First Affiliated Hospital, Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, China
| | - Ying Sun
- Department of Ophthalmology, the 2nd Hospital of Heilongjiang, Harbin, China
| | - Xiaohui Wang
- Department of Ophthalmology, the First Affiliated Hospital, Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, China
| | - Zhaowei Song
- Department of Ophthalmology, the First Affiliated Hospital, Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, China
| | - Huazhang Li
- Department of Ophthalmology, the First Affiliated Hospital, Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, China
| | - Kexin Liu
- Department of Ophthalmology, the First Affiliated Hospital, Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, China
| | - Zhijian Li
- Department of Ophthalmology, the First Affiliated Hospital, Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, China.
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Han Y, Sun W, Ren D, Zhang J, He Z, Fedorova J, Sun X, Han F, Li J. SIRT1 agonism modulates cardiac NLRP3 inflammasome through pyruvate dehydrogenase during ischemia and reperfusion. Redox Biol 2020; 34:101538. [PMID: 32325423 PMCID: PMC7176991 DOI: 10.1016/j.redox.2020.101538] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 03/30/2020] [Accepted: 04/07/2020] [Indexed: 02/07/2023] Open
Abstract
Nucleotide-binding oligomerization domain-Like Receptor with a Pyrin domain 3 (NLRP3) inflammasome was emerged as a marker of metabolic dysregulation. We revealed that age-related Sirtuin-1 (SIRT1) modulates cardiac metabolism that medicated inflammatory response during ischemia and reperfusion (I/R) stress. We hypothesize that SIRT1 attenuates NLRP3 inflammasome-dependent inflammation and pyroptosis during myocardial I/R through metabolic modulation. C57BL/6J wild type (WT) mice, inducible cardiomyocyte specific SIRT1 knockout (icSIRT1 KO) and inducible cardiomyocyte specific PDH E1α knockout (icPDH E1α KO) mice were subjected to ligation and release of left anterior descending coronary artery for in vivo regional I/R models. The echocardiography measurement demonstrated that SIRT1 agonist SRT1720 (30 μg/g) improved cardiac systolic function during 45 min of ischemia and 6 h of reperfusion in C57BL/6J WT mice. The biochemical analysis showed that I/R triggered activation of cardiac pyruvate dehydrogenase (PDH), while SIRT1 agonist SRT1720 inhibited I/R-induced PDH activity and reduced production of reactive oxygen species (ROS) during myocardial I/R. Moreover, SRT1720 regulates PDH-related glucose oxidative metabolism to reduce NLRP3 inflammasome activation and pyroptosis in an Akt signaling dependent manner during I/R. Furthermore, an impaired Akt signaling was observed in icSIRT1 KO versus SIRT1fox/flox mice under I/R stress. Intriguingly, we observed lower levels of ROS generation, decreased NLRP3 levels and less pyroptosis occurred in the icPDH E1α KO versus PDH E1αflox/flox hearts during I/R. Taken together, the results indicate that SIRT1 agonism can inhibit activation of NLRP3 inflammasome via Akt-dependent metabolic regulation during ischemic insults by I/R.
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Affiliation(s)
- Ying Han
- Cardiovascular Department, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, China; Department of Surgery, University of South Florida, Tampa, USA
| | - Weiju Sun
- Department of Surgery, University of South Florida, Tampa, USA; Cardiovascular Department, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Di Ren
- Department of Surgery, University of South Florida, Tampa, USA
| | - Jingwen Zhang
- Department of Surgery, University of South Florida, Tampa, USA
| | - Zhibin He
- Department of Surgery, University of South Florida, Tampa, USA
| | - Julia Fedorova
- Department of Surgery, University of South Florida, Tampa, USA
| | - Xiaodong Sun
- Department of Physiology and Biophysics, Mississippi Center for Heart Research, University of Mississippi Medical Center, Jackson, USA
| | - Fang Han
- Department of Physiology and Biophysics, Mississippi Center for Heart Research, University of Mississippi Medical Center, Jackson, USA
| | - Ji Li
- Department of Surgery, University of South Florida, Tampa, USA.
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Wood TR, Jóhannsson GF. Metabolic health and lifestyle medicine should be a cornerstone of future pandemic preparedness. LIFESTYLE MEDICINE 2020. [DOI: 10.1002/lim2.2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Affiliation(s)
- Thomas R. Wood
- Department of Pediatrics University of Washington Seattle Washington
- Institute for Human and Machine Cognition Pensacola Florida
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Oliveira MS, Rheinheimer J, Moehlecke M, Rodrigues M, Assmann TS, Leitão CB, Trindade MRM, Crispim D, de Souza BM. UCP2, IL18, and miR-133a-3p are dysregulated in subcutaneous adipose tissue of patients with obesity. Mol Cell Endocrinol 2020; 509:110805. [PMID: 32251712 DOI: 10.1016/j.mce.2020.110805] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 03/26/2020] [Accepted: 03/30/2020] [Indexed: 01/12/2023]
Abstract
The aim of this study was to compare the expression of UCP2, NLRP3, IL1B, IL18, and miR-133a-3p in subcutaneous adipose tissue (SAT) of 61 patients divided according to BMI: Group 1 (n = 8; BMI<25.0 kg/m2), Group 2 (n = 24; BMI 30.0-39.9 kg/m2), and Group 3 (n = 29; BMI≥40.0 kg/m2). SAT biopsies were obtained from individuals who underwent bariatric surgery or elective abdominal surgery. Gene expressions were quantified using qPCR. Bioinformatics analyses were employed to investigate target genes and pathways related to miR-133a-3p. UCP2 and miR-133a-3p expressions were decreased in SAT of Groups 2 and 3 while IL18 was increased compared to Group 1. NLRP3 and IL1B expressions did not differ between groups; however, NLRP3 was positively correlated with waist circumference and excess weight. Bioinformatics analysis demonstrated that UCP2 and NLRP3 are targets of miR-133a-3p. In conclusion, UCP2 and miR-133a-3p expressions are downregulated in patients with obesity, while IL18 is upregulated. NRLP3 is correlated with waist circumference and weight excess.
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Affiliation(s)
- Mayara S Oliveira
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil; Universidade Federal do Rio Grande do Sul, Faculty of Medicine, Graduate Program of Medical Sciences: Endocrinology, Brazil
| | - Jakeline Rheinheimer
- Universidade Federal do Rio Grande do Sul, Faculty of Medicine, Graduate Program of Medical Sciences: Endocrinology, Brazil
| | - Milene Moehlecke
- Department of Endocrinology, Universidade Luterana do Brasil, Canoas, Rio Grande do Sul, Brazil
| | - Michelle Rodrigues
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil
| | - Taís S Assmann
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil; Universidade Federal do Rio Grande do Sul, Faculty of Medicine, Graduate Program of Medical Sciences: Endocrinology, Brazil
| | - Cristiane B Leitão
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil; Universidade Federal do Rio Grande do Sul, Faculty of Medicine, Graduate Program of Medical Sciences: Endocrinology, Brazil
| | - Manoel R M Trindade
- Digestive Surgery Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil
| | - Daisy Crispim
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil; Universidade Federal do Rio Grande do Sul, Faculty of Medicine, Graduate Program of Medical Sciences: Endocrinology, Brazil
| | - Bianca M de Souza
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil; Universidade Federal do Rio Grande do Sul, Faculty of Medicine, Graduate Program of Medical Sciences: Endocrinology, Brazil.
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West EE, Kunz N, Kemper C. Complement and human T cell metabolism: Location, location, location. Immunol Rev 2020; 295:68-81. [PMID: 32166778 PMCID: PMC7261501 DOI: 10.1111/imr.12852] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Revised: 02/19/2020] [Accepted: 02/25/2020] [Indexed: 12/26/2022]
Abstract
The complement system represents one of the evolutionary oldest arms of our immune system and is commonly recognized as a liver-derived and serum-active system critical for providing protection against invading pathogens. Recent unexpected findings, however, have defined novel and rather "uncommon" locations and activities of complement. Specifically, the discovery of an intracellularly active complement system-the complosome-and its key role in the regulation of cell metabolic pathways that underly normal human T cell responses have taught us that there is still much to be discovered about this system. Here, we summarize the current knowledge about the emerging functions of the complosome in T cell metabolism. We further place complosome activities among the non-canonical roles of other intracellular innate danger sensing systems and argue that a "location-centric" view of complement evolution could logically justify its close connection with the regulation of basic cell physiology.
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Affiliation(s)
- Erin E. West
- Complement and Inflammation Research Section, National Heart, Lung and Blood Institute, Bethesda, MD, USA
| | - Natalia Kunz
- Complement and Inflammation Research Section, National Heart, Lung and Blood Institute, Bethesda, MD, USA
| | - Claudia Kemper
- Complement and Inflammation Research Section, National Heart, Lung and Blood Institute, Bethesda, MD, USA
- Faculty of Life Sciences and Medicine, King’s College London, London, UK
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
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Liu G, Chen X, Wang Q, Yuan L. NEK7: a potential therapy target for NLRP3-related diseases. Biosci Trends 2020; 14:74-82. [PMID: 32295992 DOI: 10.5582/bst.2020.01029] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
NLRP3 inflammasome plays an essential role in innate immunity, yet the activation mechanism of NLRP3 inflammasome is not clear. In human or animal models, inappropriate NLRP3 inflammasome activation is implicated in many NLRP3-related diseases, such as tumors, inflammatory diseases and autoimmune diseases. Until now, a great number of inhibitors have been used to disturb the related signaling pathways, such as IL-1β blockade, IL-18 blockade and caspase-1 inhibitors. Unfortunately, most of these inhibitors just disturb the signaling pathways after the activation of NLRP3 inflammasome. Inhibitors that directly regulate NLRP3 to abolish the inflammation response may be more effective. NEK7 is a multifunctional kinase affecting centrosome duplication, mitochondrial regulation, intracellular protein transport, DNA repair and mitotic spindle assembly. Researchers have made significant observations on the regulation of gene transcription or protein expression of the NLRP3 inflammasome signaling pathway by NEK7. Those signaling pathways include ROS signaling, potassium efflux, lysosomal destabilization, and NF-κB signaling. Furthermore, NEK7 has been proved to be involved in many NLRP3-related diseases in humans or in animal models. Inhibitors focused on NEK7 may regulate NLRP3 to abolish the inflammation response and NEK7 may be a potential therapeutic target for NLRP3-related diseases.
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Affiliation(s)
- Ganglei Liu
- Department of Geriatrics Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xueliang Chen
- Department of Geriatrics Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Qianqian Wang
- Department of Oncology, The Affiliated Zhuzhou Hospital of Xiangya Medical College, Central South University, Zhuzhou, Hunan, China
| | - Lianwen Yuan
- Department of Geriatrics Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
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Fu Q, Li J, Qiu L, Ruan J, Mao M, Li S, Mao Q. Inhibiting NLRP3 inflammasome with MCC950 ameliorates perioperative neurocognitive disorders, suppressing neuroinflammation in the hippocampus in aged mice. Int Immunopharmacol 2020; 82:106317. [PMID: 32087497 DOI: 10.1016/j.intimp.2020.106317] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 01/09/2020] [Accepted: 02/13/2020] [Indexed: 01/16/2023]
Abstract
Perioperative neurocognitive disorders (PND) are characterized by deficits in cognitive functions in the elderly following anesthesia and surgery. Effective clinical interventions for preventing this disease are limited. Growing evidence demonstrates that activation of NOD-like receptor protein3 (NLRP3) inflammasome is involved in neurodegenerative diseases. We therefore hypothesized that activation of NLRP3 inflammasome is linked to neuroinflammation and the subsequent cognitive impairments that occurred in an animal model of PND. In this study, 18-month-old C57BL/6 mice were subjected to an exploratory laparotomy under isoflurane anesthesia to mimic clinical human abdominal surgery. For interventional studies, mice received NLRP3 specific inhibitor MCC950 (10 mg/kg) or the vehicle only intraperitoneally. Behavioral studies were performed at 6 and 7 d after surgery using open field and fear conditioning tests, respectively. Interleukin-1β (IL-1β), interleukin-18 (IL-18), tumor necrosis factor-α (TNF-α), ionized calcium-binding adaptor molecule-1 (IBA1) positive cells, glial fibrillary acidic protein (GFAP) positive cells, NLRP3, apoptosis-associated speck-like protein containing a CARD (ASC), and cleaved caspase-1 were measured at 3 days post-surgery. Brain-derived neurotrophic factor (BDNF) and postsynaptic density protein 95 (PSD95) were measured at 7 days post-surgery. Our data indicates that surgery-induced cognitive impairments were associated with significant increases in IL-1β, IL-18, TNF-α, NLRP3, ASC, cleaved caspase-1, IBA1-positive cells and GFAP-positive cells, and decreases in BDNF and PSD95 expression in the hippocampus. Notably, administration with MCC950 attenuated inflammatory changes and rescued surgery-induced cognitive impairments. Our study suggests that surgery induces neuroinflammation and cognitive deficits that are partly attributed to the activation of NLRP3 inflammasome in the hippocampus of aged mice.
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Affiliation(s)
- Qun Fu
- Department of Anesthesiology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210028, China
| | - Jing Li
- Fenghuang Community Health Service Center, Gulou District, Nanjing 210029, China
| | - Lili Qiu
- Department of Anesthesiology, Zhongda Hospital, School of Medicine, Southeast University, Nanjing 210009, China
| | - Jiaping Ruan
- Department of Anesthesiology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210028, China
| | - Mingjie Mao
- Department of Anesthesiology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210028, China
| | - Shuming Li
- Department of Anesthesiology, Zhongda Hospital, School of Medicine, Southeast University, Nanjing 210009, China
| | - Qinghong Mao
- Department of Anesthesiology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210028, China.
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Pirzada RH, Javaid N, Choi S. The Roles of the NLRP3 Inflammasome in Neurodegenerative and Metabolic Diseases and in Relevant Advanced Therapeutic Interventions. Genes (Basel) 2020; 11:E131. [PMID: 32012695 PMCID: PMC7074480 DOI: 10.3390/genes11020131] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Revised: 01/22/2020] [Accepted: 01/22/2020] [Indexed: 02/07/2023] Open
Abstract
Inflammasomes are intracellular multiprotein complexes in the cytoplasm that regulate inflammation activation in the innate immune system in response to pathogens and to host self-derived molecules. Recent advances greatly improved our understanding of the activation of nucleotide-binding oligomerization domain-like receptor (NLR) family pyrin domain containing 3 (NLRP3) inflammasomes at the molecular level. The NLRP3 belongs to the subfamily of NLRP which activates caspase 1, thus causing the production of proinflammatory cytokines (interleukin 1β and interleukin 18) and pyroptosis. This inflammasome is involved in multiple neurodegenerative and metabolic disorders including Alzheimer's disease, multiple sclerosis, type 2 diabetes mellitus, and gout. Therefore, therapeutic targeting to the NLRP3 inflammasome complex is a promising way to treat these diseases. Recent research advances paved the way toward drug research and development using a variety of machine learning-based and artificial intelligence-based approaches. These state-of-the-art approaches will lead to the discovery of better drugs after the training of such a system.
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Affiliation(s)
| | | | - Sangdun Choi
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Korea; (R.H.P.); (N.J.)
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