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Li L, Ye K, Wang D. Upregulation of HTRA1 mediated by the lncRNA NEAT1/miR-141-3p axis contributes to endometriosis development through activating NLRP3 inflammasome-mediated pyroptotic cell death and cellular inflammation. In Vitro Cell Dev Biol Anim 2023; 59:166-178. [PMID: 37017808 DOI: 10.1007/s11626-023-00760-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 03/16/2023] [Indexed: 04/06/2023]
Abstract
The present study identified a novel upstream long chain non-coding (lncRNA) NEAT1/miR-141-3p/HTRA1 axis that regulated the activation of NLR family pyrin domain containing 3 (NLRP3) inflammasome to modulate endometriosis (EM) development. Specifically, clinical data suggested that the expression of NLRP3 and apoptosis-associated speck-like protein containing CARD (ASC), the cleavage of caspase-1 and gasdermin D (GSDMD), and the production of inflammatory cytokines (interleukin (IL)-1β, IL-6, tumor necrosis factor (TNF)-α, and IL-18) were all significantly increased in the ectopic endometrium (EE) tissues, compared to the normal endometrium (NE) tissues. Then, through analyzing the datasets from GEO database (GSE2339, GSE58178, and GSE7305) using the GEO2R bioinformatics tools, we verified that HtrA Serine Peptidase 1 (HTRA1) was especially enriched in the EE tissues compared to the NE tissues. To further confirm the biological functions of HTRA1, HTRA1 was overexpressed or downregulated in primary human endometrial stromal cells (hESCs) isolated from NE tissues or EE tissues, respectively. The results showed that upregulation of HTRA1 activated NLRP3 inflammasome-mediated pyroptotic cell death and cellular inflammation in NE-derived hESCs, whereas silencing of HTRA1 played an opposite role in EE-derived hESCs. In addition, the lncRNA NEAT1/miR-141-3p axis was screened as the upstream regulator of HTRA1. Mechanistically, lncRNA NEAT1 sponged miR-141-3p to positively regulate HTRA1 in a competing endogenous RNA (ceRNA) mechanisms-dependent manner. The recovery experiments in hESCs from NE and EE tissues confirmed that lncRNA NEAT1 overexpression promoted NLRP3 inflammasome-mediated pyroptotic cell death through regulating the miR-141-3p/HTRA1 axis. Taken together, this study firstly uncovered the underlying mechanisms by which a novel lncRNA NEAT1/miR-141-3p/HTRA1-NLRP3 pathway contributed to the development of EM, which provided novel diagnostic and therapeutic biomarkers for this disease.
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Affiliation(s)
- Lingchuan Li
- Department of Gynaecology, The First People's Hospital of Yunnan Province, Kunming, 650032, Yunnan, China
- The Affiliated Hospital of Kunming University of Science and Technology, Kunming, 650032, Yunnan, China
| | - Kefan Ye
- Department of Gynaecology, The First People's Hospital of Yunnan Province, Kunming, 650032, Yunnan, China
- The Affiliated Hospital of Kunming University of Science and Technology, Kunming, 650032, Yunnan, China
| | - Dongjie Wang
- Department of Gynaecology, The First People's Hospital of Yunnan Province, Kunming, 650032, Yunnan, China.
- The Affiliated Hospital of Kunming University of Science and Technology, Kunming, 650032, Yunnan, China.
- Department of Gynaecology, The Affiliated Hospital of Kunming University of Science and Technology, 157 Jinbi Road, Kunming, 650032, Yunnan, China.
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Qiu RR, Zhang H, Deng C, Chen DF, Xu YY, Xiong D, Zou YJ, Tan J. [Effects of electroacupuncture on ROS-NLRP3 inflammatory pathway and autophagy related proteins in hippocampus of vascular dementia rats]. Zhen Ci Yan Jiu 2022; 47:298-304. [PMID: 35486008 DOI: 10.13702/j.1000-0607.20210324] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To observe the effect of electroacupuncture (EA) on learning-memory ability, ultrastructural changes of hippocampal CA1 neurons, reactive oxygen species (ROS) level, Nod-like receptor protein 3 (NLRP3) and auto-phagy-related proteins expression in the hippocampus of vascular dementia (VD) rats, so as to reveal its partial mechanisms in treating VD. METHODS Male SD rats were randomly divided into sham operation, model, and EA groups (n=10 rats in each group). The VD model was established by permanent ligation of bilateral common carotid arteries. Rats of the EA group were treated with EA at "Baihui" (GV20), "Dazhui" (GV14) and bilateral "Shenshu" (BL23) for 30 min, once a day for 4 weeks. Morris water maze was used to evaluate the learning and memory ability of rats before modeling, 4 weeks after modeling and after intervention. Transmission electron microscopy (TEM) was used to observe the ultrastructural changes of hippocampal CA1 neurons. The level of ROS in hippocampus was detected by DCFH-DA fluorescence probe. The expressions of NLRP3, autophagy-related protein Beclin1 and microtubule-associated protein 1 light chain 3 (LC3) were measured by Western blot. RESULTS In comparison with the sham operation group, the average escape latency of rats in the model group was prolonged (P<0.01), and the times of crossing the original platform were reduced (P<0.05), the level of ROS, the expression levels of LC3-Ⅱ/LC3-Ⅰ ratio, Beclin1 and NLRP3 proteins in hippocampus were increased (P<0.01, P<0.05) in the model group. After EA intervention, the average escape latency of rats was significantly shortened (P<0.01), and the times of crossing the original platform were increased (P<0.05), the level of ROS, the expression levels of LC3-Ⅱ/LC3-Ⅰ ratio, Beclin1 and NLRP3 proteins in hippocampus were decreased (P<0.01, P<0.05) in the EA group compared with those of the model group. Outcomes of TEM showed that CA1 neurons in the hippocampus were damaged, chromatin aggregation, mitochondria pyknosis, cristae structure disorder, rough endoplasmic reticulum expanded and degranulated, the number of free ribosomes decreased, and autophagy could be seen in the model group, which were milder in the EA group. CONCLUSION EA at GV20, GV14 and BL23 can improve the learning and memory abilities of VD rats, alleviate the ultrastructural damage of neurons in hippocampal CA1 area, and repair the damaged neurons. The mechanism may be related to the reduction of ROS level, LC3-Ⅱ/LC3-Ⅰ ratio, NLRP3 and Beclin1 protein expression, the decrease of neuronal autophagy, inhibition of activation of NLRP3 inflammasome and alleviation of central inflammatory response.
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Affiliation(s)
- Rong-Rong Qiu
- College of Acupuncture-moxibustion and Tuina, Hunan University of Chinese Medicine,Changsha 410208, China
| | - Hong Zhang
- College of Acupuncture-moxibustion and Tuina, Hunan University of Chinese Medicine,Changsha 410208, China
| | - Chang Deng
- College of Acupuncture-moxibustion and Tuina, Hunan University of Chinese Medicine,Changsha 410208, China
| | - Dan-Feng Chen
- College of Acupuncture-moxibustion and Tuina, Hunan University of Chinese Medicine,Changsha 410208, China
| | - Ya-Yu Xu
- College of Acupuncture-moxibustion and Tuina, Hunan University of Chinese Medicine,Changsha 410208, China
| | - Dan Xiong
- College of Acupuncture-moxibustion and Tuina, Hunan University of Chinese Medicine,Changsha 410208, China
| | - Ying-Jie Zou
- College of Acupuncture-moxibustion and Tuina, Hunan University of Chinese Medicine,Changsha 410208, China
| | - Jie Tan
- College of Acupuncture-moxibustion and Tuina, Hunan University of Chinese Medicine,Changsha 410208, China
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Liu GN, Men W. Ginkgolide protects against ethanol-induced gastric ulcer in rats through NLRP3 related pathway. Shijie Huaren Xiaohua Zazhi 2022; 30:77-87. [DOI: 10.11569/wcjd.v30.i2.77] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Ginkgolide has a protective effect on gastric ulcer gastric mucosa damage, but the exact mechanism involved is still not clear.
AIM To investigate the molecular mechanism of ginkgolide for protecting against ethanol-induced gastric ulcer by detecting the expression of proteins related to the nod-like receptor thermal protein domain associated protein 3 (NLRP3) pathway.
METHODS Sixty SD rats were randomly divided into a blank group (group A, rats with no treatment), a model group (group B, rats treated with ethanol), control group (group C, rats treated with ethanol and 20 mg/ mL omeprazole), low-dose ginkgolide group (group D, rats treated with ethanol and 1 mg/mL ginkgolide), medium-dose ginkgolide group (group E, rats treated with ethanol and 2.5 mg/mL ginkgolide), and high-dose ginkgolide group (group F, rats treated with ethanol and 5 mg/mL ginkgolide), with ten rats in each group. Gastric pH, gastrin, pepsin, and ulcer index (UI) of rats in different groups were compared. The contents of NLRP3, caspase-1, IL-18, IL-1β, superoxide dismutase (SOD), malondialdehyde (MDA), and reduced glutathione (GSH) in serum were determined by ELISA. The expression levels of NLRP3, interleukin (IL)-18, IL-1β, caspase-1, and apoptosis associated blotch-like protein (ASC) in gastric tissues were detected by real-time fluorescence quantitative PCR, Western blot (WB), and immunofluorescence assay.
RESULTS UI, gastrin, total acidity, and total pepsin activity in group B were significantly higher than those in group A (P < 0.01), while UI, total acidity, and total pepsin activity in groups C, E, and F were significantly lower than those in group B (P < 0.01). Serum levels of SOD and GSH in groups C, D, E, and F were significantly higher than those in group B (P < 0.01). Serum MDA and the mRNA and protein expression of NLRP3, caspase-1, IL-18, IL-1β, and ASC in gastric tissue in group B were significantly higher than those in group A (P < 0.01). Serum MDA and the mRNA and protein expression of NLRP3, caspase-1, IL-18, IL-1β, and ASC in gastric tissue of rats in groups C, D, E, and F were significantly lower than those in group B (P < 0.01).
CONCLUSION Ginkgolide protects against ethanol-induced gastric ulcer through the NLRP3 pathway.
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Affiliation(s)
- Guang-Ning Liu
- Department of Gastroenterology, Affiliated Hospital of Nankai University (Tianjin Fourth Hospital), Tianjin 300000, China
| | - Wei Men
- Beiyang Outpatient Department of Tianjin University, Tianjin 300000, China
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Peng W, Zhang B, Sun Z, Zhang M, Guo L. Targeting the Nod-like receptor protein 3 Inflammasome with inhibitor MCC950 rescues lipopolysaccharide-induced inhibition of osteogenesis in Human periodontal ligament cells. Arch Oral Biol 2021; 131:105269. [PMID: 34601319 DOI: 10.1016/j.archoralbio.2021.105269] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 09/15/2021] [Accepted: 09/16/2021] [Indexed: 12/27/2022]
Abstract
OBJECTIVE We aim to investigate whether lipopolysaccharide-stimulated activition of Nod-like receptor protein 3 (NLRP3) Inflammasome inhibits osteogenesis in Human periodontal ligament cells (HPDLCs). Futhermore, to study whether MCC950 (a inhibitor of NLRP3 Inflammasome) rescues lipopolysaccharide-induced inhibition of osteogenesis in HPDLCs as well as the underlying mechanisms. METHODS HPDLCs were isolated from periodontal ligament of healthy orthodontic teeth from teenagers, and cells surface marker protein were detected by flow cytometry. Cells viability were determined by Cell Counting kit 8 assay. Enzyme-linked immunosorbent assay was used to analyze the secretion of proinflammatory factors. Western blot and real-time quantitative polymerase chain reaction (RT-qPCR) were measured assessing the expression of NLRP3 and Caspase-1. RT-qPCR, Alizarin red staining and Alkaline phosphatase staining were tested to determine the osteogenic differentiation capacity of HPDLCs. RESULTS It was found that lipopolysaccharide in the range of concentrations from 10 to 100 μg/ml significantly inhibited HPDLCs viability at 24 h and significantly improved proinflammatory cytokine expressions at 8 h and 24 h. MCC950 reversed lipopolysaccharide-stimulated proinflammatory cytokine expressions including interleukin-1β and interleukin-18, but not tumor necrosis factor-α. In addition, MCC950 rescued the lipopolysaccharide-inhibited osteogenic gene (Alkaline phosphatase, Runt-related transcription factor 2, and Osteocalcin). Moreover, MCC950 downregulated lipopolysaccharide-induced relative protein of NLRP3 Inflammasome signaling pathway, such as NLRP3 and Caspase-1. CONCLUSION MCC950 rescues lipopolysaccharide-induced inhibition of osteogenesis in HPDLCs via blocking NLRP3 Inflammasome signaling pathway, and it may be used as a promising therapeutic agent for periodontitis or periondontal regenerative related disease.
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Affiliation(s)
- Wei Peng
- Department of prosthodontics, Hospital of Stomatology Affiliated to Southwest Medical University, Luzhou, Sichuan, China.
| | - Bo Zhang
- Department of prosthodontics, Hospital of Stomatology Affiliated to Southwest Medical University, Luzhou, Sichuan, China.
| | - Zhengfan Sun
- Department of prosthodontics, Hospital of Stomatology Affiliated to Southwest Medical University, Luzhou, Sichuan, China.
| | - Meifeng Zhang
- Department of prosthodontics, Hospital of Stomatology Affiliated to Southwest Medical University, Luzhou, Sichuan, China.
| | - Ling Guo
- Department of prosthodontics, Hospital of Stomatology Affiliated to Southwest Medical University, Luzhou, Sichuan, China.
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Yang Y, Zhang D, Wu L, Zhang J, Wu D, Li X, Zhi F, Yang G, Kong X, Hong J, Zhao Y, Liu J, Shi Z, Ma X. Electroacupuncture inhibits the corneal ROS/TXNIP/NLRP3 signaling pathway in a rat model of dry eye syndrome. Acupunct Med 2021; 40:78-88. [PMID: 34553633 DOI: 10.1177/09645284211039235] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Electroacupuncture (EA) treatment has been found to ameliorate clinical symptoms in patients with dry eye, but its mechanisms are still not entirely clear. OBJECTIVE To study the regulation of EA on ocular surface function and the corneal reactive oxygen species (ROS)/thioredoxin-interacting protein (TXNIP)/Nod-like receptor protein 3 (NLRP3) inflammatory signaling pathway in dry eye syndrome (DES) model rats. METHODS Male Sprague-Dawley (SD) rats were randomly divided into five groups: Normal, Model, Model + EA, Model + NAC (N-actetylcysteine) and Model + NS (normal saline). The DES model was developed by subcutaneous injection of scopolamine hydrobromide with exposure to an air draft in the latter four groups. After intervention, the Schirmer I test (SIT), tear film break-up time (BUT) and ROS content were measured, the histopathological changes of corneal tissues were observed, and the mRNA and protein expression levels of TXNIP, NLRP3, apoptosis-associated Speck-like protein containing CARD (ASC), caspase-1, interleukin (IL)-1β and IL-18 were detected. RESULTS Compared with the Model group, the SIT and BUT increased significantly in the Model + EA group after intervention (p < 0.05), and the corneal injury was improved. Corneal ROS content declined in both Model + EA and Model + NAC groups (p < 0.05), and mRNA expression of TXNIP, NLRP3, ASC and caspase-1 also decreased (p < 0.01). Corneal protein expression of TXNIP, NLRP3, IL-1β and IL-18 decreased significantly in the Model + EA group (p < 0.01). CONCLUSION Inhibiting the ROS/TXNIP/NLRP3 signaling pathway may be the mechanism underlying the role of EA in improving corneal injury in DES model rats.
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Affiliation(s)
- Yanting Yang
- Laboratory of Acupuncture-Moxibustion and Immunology, Shanghai Research Institute of Acupuncture and Meridian, Shanghai, China
- Yueyang Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Dan Zhang
- Laboratory of Acupuncture-Moxibustion and Immunology, Shanghai Research Institute of Acupuncture and Meridian, Shanghai, China
| | - Lijie Wu
- Acupuncture-Moxibustion Department, The First Affiliated Hospital of Zhejiang University of Traditional Chinese Medicine, Hangzhou, China
| | - Ji Zhang
- Department of Traditional Chinese Medicine, Qingdao Women and Children's Hospital, Qingdao University, Qingdao, China
| | - Danyan Wu
- Yueyang Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xiying Li
- Yueyang Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Fangyuan Zhi
- Yueyang Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Guang Yang
- Laboratory of Acupuncture-Moxibustion and Immunology, Shanghai Research Institute of Acupuncture and Meridian, Shanghai, China
| | - Xiehe Kong
- Laboratory of Acupuncture-Moxibustion and Immunology, Shanghai Research Institute of Acupuncture and Meridian, Shanghai, China
| | - Jue Hong
- Laboratory of Acupuncture-Moxibustion and Immunology, Shanghai Research Institute of Acupuncture and Meridian, Shanghai, China
| | - Yue Zhao
- Laboratory of Acupuncture-Moxibustion and Immunology, Shanghai Research Institute of Acupuncture and Meridian, Shanghai, China
| | - Jie Liu
- Laboratory of Acupuncture-Moxibustion and Immunology, Shanghai Research Institute of Acupuncture and Meridian, Shanghai, China
| | - Zheng Shi
- Laboratory of Acupuncture-Moxibustion and Immunology, Shanghai Research Institute of Acupuncture and Meridian, Shanghai, China
| | - Xiaopeng Ma
- Laboratory of Acupuncture-Moxibustion and Immunology, Shanghai Research Institute of Acupuncture and Meridian, Shanghai, China
- Yueyang Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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Jiang N, Li Z, Luo Y, Jiang L, Zhang G, Yang Q, Chen H. Emodin ameliorates acute pancreatitis-induced lung injury by suppressing NLRP3 inflammasome-mediated neutrophil recruitment. Exp Ther Med 2021; 22:857. [PMID: 34178130 PMCID: PMC8220649 DOI: 10.3892/etm.2021.10289] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Accepted: 03/17/2021] [Indexed: 12/16/2022] Open
Abstract
Severe acute pancreatitis (SAP) activates the systemic inflammatory response and is potentially lethal. The aim of the present study was to determine the effects of emodin on acute lung injury (ALI) in rats with SAP and investigate the role of the Nod-like receptor protein 3 (NLRP3) inflammasome and its association with neutrophil recruitment. Sodium taurocholate (5.0%) was used to establish the SAP model. All animals were randomly assigned into four groups: Sham, SAP, emodin and dexamethasone (positive control drug) groups (n=10 mice per group). Histopathology observation of pancreatic and lung tissues was detected by hematoxylin and eosin staining. The levels of serum amylase, IL-1β and IL-18 were measured by ELISA. Single-cell suspensions were obtained from enzymatically digested lung tissues, followed by flow cytometric analysis for apoptosis. In addition, the expression levels of NLRP3 inflammasome-associated and apoptosis-associated proteins in lung tissues were measured by western blotting. Moreover, lymphocyte antigen 6 complex locus G6D+ (Ly6G+) cell recruitment was detected using immunohistochemical analysis. The results revealed that emodin markedly improved pancreatic histological injury and decreased the levels of serum amylase, IL-1β and IL-18. Pulmonary edema and apoptosis were significantly alleviated by emodin. Additionally, the protein expression levels of intercellular adhesion molecule 1, NLRP3, apoptosis-associated speck-like protein containing a CARD and cleaved caspase-1 were downregulated following emodin treatment. Moreover, emodin inhibited Ly6G+ cell recruitment in lung tissues. The present study demonstrated that emodin may offer protection against ALI induced by SAP via inhibiting and suppressing NLRP3 inflammasome-mediated neutrophil recruitment and may be a novel therapeutic strategy for the clinical treatment of ALI.
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Affiliation(s)
- Nan Jiang
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China.,Institute (College) of Integrative Medicine and College of Pharmacy, Dalian Medical University, Dalian, Liaoning 116044, P.R. China.,Department of Obstetrics and Gynecology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Zhaoxia Li
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China.,Institute (College) of Integrative Medicine and College of Pharmacy, Dalian Medical University, Dalian, Liaoning 116044, P.R. China
| | - Yalan Luo
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China.,Institute (College) of Integrative Medicine and College of Pharmacy, Dalian Medical University, Dalian, Liaoning 116044, P.R. China
| | - Liu Jiang
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China.,Institute (College) of Integrative Medicine and College of Pharmacy, Dalian Medical University, Dalian, Liaoning 116044, P.R. China
| | - Guixin Zhang
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China.,Institute (College) of Integrative Medicine and College of Pharmacy, Dalian Medical University, Dalian, Liaoning 116044, P.R. China
| | - Qi Yang
- Department of Traditional Chinese Medicine, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
| | - Hailong Chen
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
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Dai X, Liao R, Liu C, Liu S, Huang H, Liu J, Jin T, Guo H, Zheng Z, Xia M, Ling W, Xiao Y. Epigenetic regulation of TXNIP-mediated oxidative stress and NLRP3 inflammasome activation contributes to SAHH inhibition-aggravated diabetic nephropathy. Redox Biol 2021; 45:102033. [PMID: 34119876 DOI: 10.1016/j.redox.2021.102033] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 05/30/2021] [Accepted: 06/02/2021] [Indexed: 12/22/2022] Open
Abstract
S-adenosylhomocysteine (SAH) is hydrolyzed by SAH hydrolase (SAHH) to homocysteine and adenosine. Increased plasma SAH levels were associated with disturbed renal function in patients with diabetes. However, the role and mechanism of SAHH in diabetic nephropathy is still unknown. In the present study, we found that inhibition of SAHH by using its inhibitor adenosine dialdehyde (ADA) accumulates intracellular or plasma SAH levels and increases high glucose-induced podocyte injury and aggravates STZ-induced diabetic nephropathy, which is associated with Nod-like receptor protein 3 (NLRP3) inflammasome activation. Inhibition or knockout of NLRP3 attenuates SAHH inhibition-aggravated podocyte injury and diabetic nephropathy. Additionally, SAHH inhibition increases thioredoxin-interacting protein (TXNIP)-mediated oxidative stress and NLRP3 inflammasome activation, but these effects were not observed in TXNIP knockout mice. Mechanistically, SAHH inhibition increased TXNIP by inhibiting histone methyltransferase enhancer of zeste homolog 2 (EZH2) and reduced trimethylation of histone H3 lysine 27 and its enrichment at promoter of early growth response 1 (EGR1). Moreover, EGR1 is activated and enriched at promoters of TXNIP by SAHH inhibition and is essential for SAHH inhibition-induced TXNIP expression. Inhibition of EGR1 protected against SAHH inhibition-induced NLRP3 inflammasome activation and oxidative stress and diabetic nephropathy. Finally, the harmful effects of SAHH inhibition on inflammation and oxidative stress and diabetic nephropathy were also observed in heterozygote SAHH knockout mice. These findings suggest that EZH2/EGR1/TXNIP/NLRP3 signaling cascade contributes to SAHH inhibition-aggravated diabetic nephropathy. Our study firstly provides a novel insight into the role and mechanism of SAHH inhibition in diabetic nephropathy. SAHH inhibition accumulates SAH levels and aggravates podocyte injury and diabetic nephropathy. SAHH inhibition induces TXNIP-mediated oxidative stress and NLRP3 inflammasome activation. SAHH inhibition increases TXNIP by inhibiting EZH2 and reducing H3K27me3 and its enrichment at promoter of EGR1. EGR1 is required for SAHH inhibition-induced TXNIP and NLRP3 inflammasome activation and diabetic nephropathy.
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Lin Y, Liu M, Chen E, Jiang W, Shi W, Wang Z. Bone marrow-derived mesenchymal stem cells microvesicles stabilize atherosclerotic plaques by inhibiting NLRP3-mediated macrophage pyroptosis. Cell Biol Int 2020; 45:820-830. [PMID: 33325118 DOI: 10.1002/cbin.11526] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 11/16/2020] [Accepted: 12/13/2020] [Indexed: 12/18/2022]
Abstract
Rupture of atherosclerotic plaques constitutes the major cause of thrombosis and acute ischemic coronary syndrome. Bone marrow-derived mesenchymal stem cells microvesicles (BMSCs-MVs) are reported to promote angiogenesis. This study investigated the role of BMSCs-MVs in stabilizing atherosclerotic plaques. BMSCs-MVs in mice were isolated and identified. The mouse model of atherosclerosis was established, and mice were injected with BMSCs-MVs via the tail vein. The macrophage model with high glucose and oxidative damage was established and then incubated with BMSCs-MVs. Nod-like receptor protein 3 (NLRP3) expression, pyroptosis-related proteins, and inflammatory factors were detected. Actinomycin D was used to inhibit the secretion of BMSCs-MVs to verify the source of microRNA-223 (miR-223). The binding relationship between miR-223 and NLRP3 was predicted and verified. BMSCs-MVs with knockdown of miR-223 were cocultured with bone marrow-derived macrophages with knockdown of NLRP3, and then levels of miR-223, NLRP3, pyroptosis-related proteins, and inflammatory factors were detected. BMSCs-MVs could reduce the vulnerability index of atherosclerotic plaques and intima-media thickness in mice, and inhibit pyroptosis and inflammation. BMSCs-MVs inhibited pyroptosis and inflammatory factors in macrophages. BMSCs-MVs carried miR-223 to inhibit NLRP3 expression and reduce macrophage pyroptosis, thereby stabilizing the atherosclerotic plaques.
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Affiliation(s)
- Yu Lin
- Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Meihan Liu
- Department of Ultrasonography, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Enqi Chen
- Department of Ultrasonography, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Wei Jiang
- Department of Ultrasonography, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Weidong Shi
- Department of Ultrasonography, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Zhiyuan Wang
- Department of Ultrasonography, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
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Deng B, Hu Y, Sheng X, Zeng H, Huo Y. miR-223-3p reduces high glucose and high fat-induced endothelial cell injury in diabetic mice by regulating NLRP3 expression. Exp Ther Med 2020; 20:1514-1520. [PMID: 32765674 PMCID: PMC7388564 DOI: 10.3892/etm.2020.8864] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 12/18/2019] [Indexed: 12/16/2022] Open
Abstract
Expression levels of miR-223-3p and NLRP3 in high glucose and high fat (HGHF)-induced diabetic mice, and the mechanism on the injury of mouse cardiac microvascular endothelial cells (MCMECs) were investigated. Four-week C57BL/6J laboratory mice were selected and randomized into a control group and a model group (n=10 each). Mice in the model group were fed with HGHF diet to establish a mouse model of diabetes. Further MCMECs were purchased to construct carriers through transient transfection, and were separated into a normal group (cultured in the normal environment), a model group (not transfected), a blank carrier group (transfected with miR-NC), a miR-223-3p-mimics group, and a miR-223-3p-inhibitor group. RT-qPCR was used to detect the expression levels of miR-223-3p and NLRP3, and western blot analysis to detect the expression levels of NLRP3, apoptosis-related proteins Bax and caspase-3, and anti-apoptotic protein Bcl-2. Flow cytometry was used to observe apoptosis and TargetScan to predict the target relationship between miR-223-3p and NLRP3. Dual-luciferase reporter gene assay was used to detect the relationship between miR-223-3p and NLRP3. Compared with those in the control group, the mice in the model group had significantly lower expression of miR-223-3p. However, significantly higher mRNA and protein expression levels of NLRP3 were observed (P<0.05). After modeling, miR-223-3p overexpression downregulated the expression levels of NLRP3 mRNA, Bax and NLRP3 protein, as well as inhibited endothelial cell apoptosis (P<0.05), while the inhibition of miR-223-3p expression upregulated the expression levels and promoted apoptosis. In conclusion, miR-223-3p expression is low, however, NLRP3 is highly expressed in the heart tissue of HGHF-induced diabetic mice. miR-223-3p reduces the injury of MCMECs and inhibits endothelial cell apoptosis in mice by regulating the expression of NLRP3.
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Affiliation(s)
- Bo Deng
- Department of Endocrinology, The Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, P.R. China
| | - Ying Hu
- Department of Endocrinology, The Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, P.R. China
| | - Xia Sheng
- Department of Endocrinology, The Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, P.R. China
| | - Huijun Zeng
- Department of Pharmacy, The Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, P.R. China
| | - Yanan Huo
- Department of Endocrinology, Jiangxi Provincial People's Hospital, Nanchang, Jiangxi 330006, P.R. China
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Qu J, Wang W, Zhang Q, Li S. Inhibition of Lipopolysaccharide-Induced Inflammation of Chicken Liver Tissue by Selenomethionine via TLR4-NF-κB-NLRP3 Signaling Pathway. Biol Trace Elem Res 2020; 195:205-214. [PMID: 31332706 DOI: 10.1007/s12011-019-01841-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 07/16/2019] [Indexed: 02/08/2023]
Abstract
Selenium (Se) is important in many physiological processes, such as antioxidant processes and inflammation. The aim of our experiments was to investigate the molecular mechanism that selenomethionine could reduce the lipopolysaccharide (LPS)-induced inflammation by inhibiting the TLR4-NF-κB-NLRP3 signaling pathway. Eighty broilers were randomly and evenly divided into two groups, giving normal Se content diets (Con group, 0.2 mg Se/kg diet) and Se-rich basal diets (Se group, 0.5 mg selenomethionine/kg diet) for 90 days. Se-rich basal diets were based on 0.2 mg/kg sodium selenite contained. Five hours before euthanized, 20 broilers were randomly selected from each group and given lipopolysaccharide (200 μg/kg BW) by intraperitoneal injection, Con+LPS group and Se+LPS group, respectively. The Con group and Se group were given equal saline by intraperitoneal injection. We observed the microscopic pathological changes of liver tissue detected oxidative stress by kit and detected the expression of inflammatory factors, heat shock protein (HSP), and nod-like receptor protein 3 (NLRP3)-related genes by qRT-PCR and Western blot. With the microscope, we found the Con+LPS group had obvious inflammatory lesions such as sinusoidal congestion, but the damage was significantly alleviated in the Se+LPS group. In the Con+LPS group, the activity of GSH-Px and the content of GSH were significantly decreased compared with those in the Con group; however, they are increased in the Se group and in the Se + LPS group. Inflammatory factors (MyD88, NF-κB, TNF-α, IL-1β, IL-6, IL-12, IL-18, iNOS, and COX-2), heat shock proteins (HSP27, HSP60, HSP70, and HSP90), and the expression of NLRP3 and caspase-1 increased in the Con+LPS group compared with those in the Con group, while they were lower in the Se+LPS group than in the Con+LPS group. We concluded that selenomethionine inhibits the LPS-induced inflammation of liver tissue via suppressing the TLR4-NF-κB-NLRP3 signaling pathway.
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Affiliation(s)
- Jingrui Qu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Wei Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Qiaojian Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Shu Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China.
- Key Laboratory for Laboratory Animals and Comparative Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China.
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Sun W, Zeng C, Yue D, Liu S, Ren Z, Zuo Z, Deng J, Peng G, Hu Y. Ageratina adenophora causes spleen toxicity by inducing oxidative stress and pyroptosis in mice. R Soc Open Sci 2019; 6:190127. [PMID: 31417717 PMCID: PMC6689578 DOI: 10.1098/rsos.190127] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 06/25/2019] [Indexed: 05/11/2023]
Abstract
Ageratina adenophora is an invasive weed with potent toxicological effects on livestock. Oxidative stress and pyroptosis play a pivotal role in regulating animal or human health and disease. The object of this study was to determine the mechanism underlying splenic toxicity induced by A. adenophora in a mouse model. Ageratina adenophora significantly increased the levels of reactive oxygen species and malondialdehyde, but decreased the antioxidants like catalase, superoxide dismutase, glutathione and glutathione peroxidase. In addition, the activity of the antioxidant enzymes was also decreased upon A. adenophora treatment. The induction of the pyroptosis pathway was evaluated in terms of the expression levels of Nod-like receptor protein 3, nuclear factor-κB, caspase-1, gasdermin-D and interleukin-1β, all of which were significantly elevated by A. adenophora. These findings suggest that A. adenophora impairs spleen function in mice through oxidative stress damage and pyroptosis.
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Affiliation(s)
- Wei Sun
- Key Laboratory of Animal Disease and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang District, Chengdu, Sichuan 611130, People's Republic of China
- Tongren Polytechnic College, Bijiang District, Tongren, Guizhou 554300, People's Republic of China
| | - Chaorong Zeng
- Affiliated Sichuan Provincial Rehabilitation Hospital of Chengdu University of TCM, Sichuan Bayi Rehabilitation Center, Chengdu, Sichuan 611135, People's Republic of China
| | - Dong Yue
- Key Laboratory of Animal Disease and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang District, Chengdu, Sichuan 611130, People's Republic of China
| | - Shanshan Liu
- Tongren Polytechnic College, Bijiang District, Tongren, Guizhou 554300, People's Republic of China
| | - Zhihua Ren
- Key Laboratory of Animal Disease and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang District, Chengdu, Sichuan 611130, People's Republic of China
| | - Zhicai Zuo
- Key Laboratory of Animal Disease and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang District, Chengdu, Sichuan 611130, People's Republic of China
| | - Junliang Deng
- Key Laboratory of Animal Disease and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang District, Chengdu, Sichuan 611130, People's Republic of China
| | - Guangneng Peng
- Key Laboratory of Animal Disease and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang District, Chengdu, Sichuan 611130, People's Republic of China
| | - Yanchun Hu
- Key Laboratory of Animal Disease and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang District, Chengdu, Sichuan 611130, People's Republic of China
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Abstract
Inflammasomes are large intracellular multi-protein signalling complexes that are formed in the cytosolic compartment as an inflammatory immune response to endogenous danger signals. The formation of the inflammasome enables activation of an inflammatory protease caspase-1, pyroptosis initiation with the subsequent cleaving of the pro-inflammatory cytokines interleukin (IL)-1β and proIL-18 to produce active forms. The inflammasome complex consists of a Nod-like receptor (NLR), the adapter apoptosis-associated speck-like (ASC) protein, and Caspase-1. Dysregulation of NLRP3 inflammasome activation is involved tumor pathogenesis, although its role in cancer development and progression remains controversial due to the inconsistent findings described. In this review, we summarize the current knowledge on the contribution of the NLRP3 inflammasome on potential cancer promotion and therapy.
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Affiliation(s)
- Maryam Moossavi
- Student Research Committee, Birjand University of Medical Sciences, Birjand, Iran.,Cellular and Molecular Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Negin Parsamanesh
- Student Research Committee, Birjand University of Medical Sciences, Birjand, Iran.,Cellular and Molecular Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Afsane Bahrami
- Cellular and Molecular Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Stephen L Atkin
- Weill Cornell Medicine Qatar, Education City, PO Box 24144, Doha, Qatar.
| | - Amirhossein Sahebkar
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran. .,Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran. .,School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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13
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Guo Z, Yu S, Chen X, Zheng P, Hu T, Duan Z, Liu X, Liu Q, Ye R, Zhu W, Liu X. Suppression of NLRP3 attenuates hemorrhagic transformation after delayed rtPA treatment in thromboembolic stroke rats: Involvement of neutrophil recruitment. Brain Res Bull 2017; 137:229-240. [PMID: 29258866 DOI: 10.1016/j.brainresbull.2017.12.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Revised: 12/13/2017] [Accepted: 12/14/2017] [Indexed: 11/26/2022]
Abstract
BACKGROUND Inflammation and neutrophils play pivotal roles in hemorrhagic transformation (HT) after recombinant tissue plasminogen activator (rtPA) treatment in stroke; however, the contribution of Nod-like receptor protein 3 (NLRP3), a key component of the innate immune system, is not yet known. This study aimed to explore the role of NLRP3 in the delayed rtPA-induced HT and its association with the neutrophil recruitment. METHODS Rats were subjected to thromboembolic focal cerebral ischemia and delayed rtPA treatment at 4 h after ischemia to mimic HT. NLRP3 short hairpin RNAs (shRNA) were administered 72 h before ischemia. Additionally, rabbit anti-rat neutrophil serum (inducing neutropenia) was administered before cerebral ischemia. The infarct volume, edema volume, neurological deficit, hemorrhages, blood-brain barrier (BBB) integrity and brain neutrophil recruitment were evaluated at 24 h after cerebral ischemia. RESULTS Our results demonstrated that delayed rtPA treatment at 4 h after ischemia promoted the expression of NLRP3 in neurons, microglia and endothelial cells, degradation of BBB components, and HT. NLRP3 knockdown significantly attenuated NLRP3 expression, BBB disruption, and HT. It also improved neurological functions and reduced neutrophil recruitment. Rabbit anti-rat neutrophil serum, like NLRP3 shRNA, reduced hemorrhage score and hemorrhage volumes after rtPA treatment. Furthermore, the anti-rat neutrophil serum combined with NLRP3 shRNA didn't further increase the protective effect on HT compared to rabbit anti-rat neutrophil serum used alone. CONCLUSIONS Together, our data suggest that NLRP3 inhibition can reduce neutrophil recruitment, which may contribute to the inhibitory effect on HT.
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Affiliation(s)
- Zhiliang Guo
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China; Department of Neurology, Second Affiliated Hospital of Soochow University, Suzhou 215004, China.
| | - Shuhong Yu
- Department of Encephalopathy, Suzhou Integrated Traditional and Western Medicine Hospital, Suzhou 215101, China.
| | - Xin Chen
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China.
| | - Ping Zheng
- Department of Medicine, Royal Melbourne Hospital, University of Melbourne, Australia.
| | - Ting Hu
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China.
| | - Zhenhui Duan
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China.
| | - Xiaoyun Liu
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China.
| | - Qian Liu
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China.
| | - Ruidong Ye
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China.
| | - Wusheng Zhu
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China.
| | - Xinfeng Liu
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China.
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