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Weng X, Luo X, Dai X, Lv Y, Zhang S, Bai X, Bao X, Wang Y, Zhao C, Zeng M, Hu S, Li J, Jia H, Yu B. Apigenin inhibits macrophage pyroptosis through regulation of oxidative stress and the NF-κB pathway and ameliorates atherosclerosis. Phytother Res 2023; 37:5300-5314. [PMID: 37526050 DOI: 10.1002/ptr.7962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 06/21/2023] [Accepted: 07/02/2023] [Indexed: 08/02/2023]
Abstract
Pyroptosis plays an important role in inflammatory diseases such as viral hepatitis and atherosclerosis. Apigenin exhibits various bioactivities, particularly anti-inflammation, but its effect on pyroptosis remains unclear. The aim of this study is to investigate the effect of apigenin on pyroptosis and explore its potential against inflammatory diseases. THP-1 macrophages treated by lipopolysaccharides/adenosine 5'-triphosphate were used as the in vitro pyroptosis model. Western blot was used to detect the expression of NLRP3 inflammasome components and key regulators. Immunofluorescence was used to observe ROS production and intracellular location of p65. The potential of apigenin against inflammatory diseases was evaluated using atherosclerotic mice. Plaque progression was observed by pathological staining. Immunofluorescence was used to observe the expression of NLRP3 inflammasome components in plaques. The results showed that apigenin inhibited NLRP3 inflammasome activation. Apigenin reduced ROS overproduction and inhibited p65 nuclear translocation. Additionally, apigenin decreased the expression of NLRP3 inflammasome components in the plaque. Plaque progression was inhibited by apigenin. In conclusion, apigenin exhibited a preventive effect on macrophage pyroptosis by reducing oxidative stress and inhibiting the NF-κB pathway. Apigenin may alleviate atherosclerosis at least partially by inhibiting macrophage pyroptosis. These findings suggest apigenin to be a promising therapeutic agent for inflammatory diseases.
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Affiliation(s)
- Xiuzhu Weng
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
- National Key Laboratory of Frigid Zone Cardiovascular Diseases, Harbin, People's Republic of China
| | - Xing Luo
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
- National Key Laboratory of Frigid Zone Cardiovascular Diseases, Harbin, People's Republic of China
| | - Xinyu Dai
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
- National Key Laboratory of Frigid Zone Cardiovascular Diseases, Harbin, People's Republic of China
| | - Ying Lv
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
- National Key Laboratory of Frigid Zone Cardiovascular Diseases, Harbin, People's Republic of China
| | - Shan Zhang
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
- National Key Laboratory of Frigid Zone Cardiovascular Diseases, Harbin, People's Republic of China
| | - Xiaoxuan Bai
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
- National Key Laboratory of Frigid Zone Cardiovascular Diseases, Harbin, People's Republic of China
| | - Xiaoyi Bao
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
- National Key Laboratory of Frigid Zone Cardiovascular Diseases, Harbin, People's Republic of China
| | - Ying Wang
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
- National Key Laboratory of Frigid Zone Cardiovascular Diseases, Harbin, People's Republic of China
| | - Chen Zhao
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
- National Key Laboratory of Frigid Zone Cardiovascular Diseases, Harbin, People's Republic of China
| | - Ming Zeng
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
- National Key Laboratory of Frigid Zone Cardiovascular Diseases, Harbin, People's Republic of China
| | - Sining Hu
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
- National Key Laboratory of Frigid Zone Cardiovascular Diseases, Harbin, People's Republic of China
| | - Ji Li
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
- National Key Laboratory of Frigid Zone Cardiovascular Diseases, Harbin, People's Republic of China
| | - Haibo Jia
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
- National Key Laboratory of Frigid Zone Cardiovascular Diseases, Harbin, People's Republic of China
| | - Bo Yu
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
- National Key Laboratory of Frigid Zone Cardiovascular Diseases, Harbin, People's Republic of China
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Shen C, Jiang Y, Lin J, He Y, Liu Y, Fang D. Purinergic receptor P2X7 activates NOX2/JNK signaling to participate in granulosa cell inflammation and apoptosis in polycystic ovary syndrome. J Bioenerg Biomembr 2023; 55:313-322. [PMID: 37480429 DOI: 10.1007/s10863-023-09979-2] [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: 02/28/2023] [Accepted: 07/18/2023] [Indexed: 07/24/2023]
Abstract
Increasing evidence shows that polycystic ovary syndrome (PCOS) is often accompanied by an inflammatory response, hence, appropriately managing granulosa cell inflammation is critical to regaining ovarian function in PCOS. In this study, the differential levels of purinergic receptor P2X7 between the control and PCOS samples in the dataset GSE34526 were assessed, then PCOS mouse models were established. Following evaluating the fluctuations in hormone levels, inflammatory cytokines, and P2X7, mice received treatment with the P2X7 antagonist A740003. Its effects on hormones, inflammation, apoptosis, and NOX2 signaling in mice were examined. Afterward, primary mouse granulosa cells were isolated, and the mediating role of NOX2 signaling in the P2X7 regulatory pathway was confirmed by transfection of NOX2 overexpression plasmids. The results demonstrated that P2X7 was significantly elevated in the PCOS samples in the dataset. Compared with the control group, PCOS mice had significant differences in the follicle-stimulating hormone, luteinizing hormone, testosterone, anti-Müllerian hormone, inflammatory factors, and P2X7. Treatment with A740003 partially restored these parameter levels, including NOX2 signaling. Based on in vitro experiments on primary mouse granulosa cells, the above findings were re-verified, and the overexpression of NOX2 could reverse the regulatory function of P2X7. The present study highlights that P2X7 level increases in PCOS, and inhibition of P2X7 can reduce disease symptoms. It is involved in inflammation and apoptosis in granulosa cells through NOX2/JNK signaling.
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Affiliation(s)
- Chuan Shen
- Department of Biochemistry and Molecular Biology, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, No. 17, Section 3, Ren Min Nan Lu, Chengdu, Sichuan, 610041, P.R. China
- Department of Laboratory Medicine, West China Second University Hospital, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Sichuan University, Ministry of Education, No. 20, Section 3, Ren Min Nan Lu, Chengdu, Sichuan, 610041, P.R. China
| | - Yongmei Jiang
- Department of Laboratory Medicine, West China Second University Hospital, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Sichuan University, Ministry of Education, No. 20, Section 3, Ren Min Nan Lu, Chengdu, Sichuan, 610041, P.R. China
| | - Jia Lin
- Department of Biochemistry and Molecular Biology, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, No. 17, Section 3, Ren Min Nan Lu, Chengdu, Sichuan, 610041, P.R. China
| | - Yibei He
- Department of Laboratory Medicine, Chengdu Chenghua District Maternal and Child Health Hospital, No. 6, Xinhong Road, Cheng Hua Da Dao, Chengdu, Sichuan, 610056, P.R. China
| | - Yue Liu
- Department of Laboratory Medicine, Chengdu Chenghua District Maternal and Child Health Hospital, No. 6, Xinhong Road, Cheng Hua Da Dao, Chengdu, Sichuan, 610056, P.R. China
| | - Dingzhi Fang
- Department of Biochemistry and Molecular Biology, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, No. 17, Section 3, Ren Min Nan Lu, Chengdu, Sichuan, 610041, P.R. China.
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Rasmussen M, Welinder C, Schwede F, Ekström P. The cGMP system in normal and degenerating mouse neuroretina: New proteins with cGMP interaction potential identified by a proteomics approach. J Neurochem 2020; 157:2173-2186. [PMID: 33230839 PMCID: PMC8359485 DOI: 10.1111/jnc.15251] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 11/19/2020] [Accepted: 11/20/2020] [Indexed: 12/17/2022]
Abstract
The hereditary disease Retinitis pigmentosa results in severe vision loss due to photoreceptor degeneration by unclear mechanisms. In several disease models, the second messenger cGMP accumulates in the degenerating photoreceptors, where it may over‐activate specific cGMP‐interacting proteins, like cGMP‐dependent protein kinase. Moreover, interventions that counteract the activity of these proteins lead to reduced photoreceptor cell death. Yet there is little or no information whether other than such regular cGMP‐interactors are present in the retina, which we, therefore, investigated in wild‐type and retinal degeneration (rd1, rd10, and rd2) mouse models. An affinity chromatography based proteomics approach that utilized immobilized cGMP analogs was applied to enrich and select for regular and potentially new cGMP‐interacting proteins as identified by mass spectrometry. This approach revealed 12 regular and 10 potentially new retinal cGMP‐interacting proteins (e.g., EPAC2 and CaMKIIα). Several of the latter were found to be expressed in the photoreceptors and to have proximity to cGMP and may thus be of interest when defining prospective therapeutic targets or biomarkers for retinal degeneration.
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Affiliation(s)
- Michel Rasmussen
- Faculty of Medicine, Department of Clinical Sciences Lund, Lund University, Ophthalmology, Lund, Sweden
| | - Charlotte Welinder
- Faculty of Medicine, Department of Clinical Sciences Lund, Oncology, Lund University, Lund, Sweden
| | - Frank Schwede
- BIOLOG Life Science Institute GmbH & Co. KG, Bremen, Germany
| | - Per Ekström
- Faculty of Medicine, Department of Clinical Sciences Lund, Lund University, Ophthalmology, Lund, Sweden
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Fan H, Li D, Guan X, Yang Y, Yan J, Shi J, Ma R, Shu Q. MsrA Suppresses Inflammatory Activation of Microglia and Oxidative Stress to Prevent Demyelination via Inhibition of the NOX2-MAPKs/NF-κB Signaling Pathway. DRUG DESIGN DEVELOPMENT AND THERAPY 2020; 14:1377-1389. [PMID: 32308370 PMCID: PMC7147623 DOI: 10.2147/dddt.s223218] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 02/20/2020] [Indexed: 12/17/2022]
Abstract
Introduction Demyelination causes neurological deficits involving visual, motor, sensory symptoms. Deregulation of several enzymes has been identified in demyelination, which holds potential for the development of treatment strategies for demyelination. However, the specific effect of methionine sulfoxide reductase A (MsrA) on demyelination remains unclear. Hence, this study aims to explore the effect of MsrA on oxidative stress and inflammatory response of microglia in demyelination. Methods Initially, we established a mouse model with demyelination induced by cuprizone and a cell model provoked by lipopolysaccharide (LPS). The expression of MsrA in wild-type (WT) and MsrA-knockout (MsrA-/-) mice were determined by RT-qPCR and Western blot analysis. In order to further explore the function of MsrA on inflammatory response, and oxidative stress in demyelination, we detected the expression of microglia marker Iba1, inflammatory factors TNF-α and IL-1β and intracellular reactive oxygen species (ROS), superoxide dismutase (SOD) activity, as well as expression of the NOX2-MAPKs/NF-κB signaling pathway-related genes in MsrA-/- mice and LPS-induced microglia following different treatments. Results MsrA expression was downregulated in MsrA-/- mice. MsrA silencing was shown to produce severely injured motor coordination, increased expressions of Iba1, TNF-α, IL-1β, ROS and NOX2, and extent of ERK, p38, IκBα, and p65 phosphorylation, but reduced SOD activity. Conjointly, our study suggests that Tat-MsrA fusion protein can prevent the cellular inflammatory response and subsequent demyelination through negative regulation of the NOX2-MAPKs/NF-κB signaling pathway. Conclusion Our data provide a profound insight on the role of endogenous antioxidative defense systems such as MsrA in controlling microglial function.
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Affiliation(s)
- Hua Fan
- The First Affiliated Hospital, College of Clinical Medicine of Henan University of Science and Technology, Luoyang 471000, People's Republic of China
| | - Damiao Li
- The First Affiliated Hospital, College of Clinical Medicine of Henan University of Science and Technology, Luoyang 471000, People's Republic of China
| | - Xinlei Guan
- Department of Pharmacy, Wuhan Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Yanhui Yang
- The First Affiliated Hospital, College of Clinical Medicine of Henan University of Science and Technology, Luoyang 471000, People's Republic of China
| | - Junqiang Yan
- The First Affiliated Hospital, College of Clinical Medicine of Henan University of Science and Technology, Luoyang 471000, People's Republic of China
| | - Jian Shi
- The First Affiliated Hospital, College of Clinical Medicine of Henan University of Science and Technology, Luoyang 471000, People's Republic of China
| | - Ranran Ma
- Department of Pharmacy, Ninth Hospital of Xi'an, Affiliated to Medical College of Xi'an Jiaotong University, Xi'an 710054, People's Republic of China
| | - Qing Shu
- Department of Pharmacy, Ninth Hospital of Xi'an, Affiliated to Medical College of Xi'an Jiaotong University, Xi'an 710054, People's Republic of China
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Sun YJ, Ma S, Fan B, Wang Y, Wang SR, Li GY. Therapeutic hypothermia protects photoreceptors through activating Cirbp pathway. Neurochem Int 2019; 126:86-95. [DOI: 10.1016/j.neuint.2019.03.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 02/14/2019] [Accepted: 03/06/2019] [Indexed: 02/02/2023]
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Liu SY, Song JY, Fan B, Wang Y, Pan YR, Che L, Sun YJ, Li GY. Resveratrol protects photoreceptors by blocking caspase- and PARP-dependent cell death pathways. Free Radic Biol Med 2018; 129:569-581. [PMID: 30342188 DOI: 10.1016/j.freeradbiomed.2018.10.431] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 10/14/2018] [Accepted: 10/17/2018] [Indexed: 12/24/2022]
Abstract
Retinal degeneration is a major cause of severe vision loss and irreversible blindness and is characterized by progressive damage to retinal photoreceptor cells. Resveratrol (RSV) serves as an activator of the histone deacetylase, Sirt1, and has been shown to exert anti-oxidative properties. In this study, we mimicked retinal degeneration by subjecting photoreceptors (661 W cells) to glucose deprivation (GD) or light exposure. Under these conditions, we investigated the mechanisms underlying GD- or light exposure-induced cell death and the protective effect of RSV. We found that GD and light exposure resulted in mitochondrial dysfunction, oxidative stress, and cell death. Treatment of injured cells with RSV decreased the production of reactive oxygen species (ROS), improved the ratio of reduced/oxidized glutathione (GSH/GSSG), mitochondrial membrane potential and morphology, and reduced apoptosis. We used the caspase inhibitor, z-VAD-fmk, and a lentiviral-mediated shRNA knockdown of PARP-1 to reveal that GD and light exposure-induced cell death have different underlying mechanisms; GD triggered a caspase-dependent cell death pathway, whereas light exposure triggered a PARP-dependent cell death pathway. The level of caspase-9 and caspase-3, upregulated following GD, were reduced by treatment with RSV. Similarly, the level of PARP-1 and AIF, upregulated following light exposure, were decreased by treatment with RSV. Additionally, treatment with RSV elevated the protein expression and enzymatic activity of Sirt1 and a Sirt1 inhibitor reduced the protective effect of RSV against insult-induced cellular injuries, indicating that RSV's protective effect may involve Sirt1 activation. Finally, we investigated the neuroprotection of RSV in vivo. Administration of RSV to mice under extreme light exposure led to a suppression of the light-induced thinning of the outer nuclear layer (ONL) detected by hematoxylin and eosin (H&E) staining and restored retinal function evaluated by electroretinography (ERG). Taken together, our findings provide evidence that treatment with RSV has neuroprotective effects on both GD and light exposure-induced cell death pathways in photoreceptor cells.
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Affiliation(s)
- Shu-Yan Liu
- Department of Ophthalmology, Second Hospital of JiLin University, ChangChun 130041, China
| | - Jing-Yao Song
- Department of Ophthalmology, Second Hospital of JiLin University, ChangChun 130041, China
| | - Bin Fan
- Department of Ophthalmology, Second Hospital of JiLin University, ChangChun 130041, China
| | - Ying Wang
- Department of Hemooncolog, Second Hospital of JiLin University, ChangChun 130041, China
| | - Yi-Ran Pan
- Department of Ophthalmology, Second Hospital of JiLin University, ChangChun 130041, China
| | - Lin Che
- Department of Ophthalmology, Second Hospital of JiLin University, ChangChun 130041, China
| | - Ying-Jian Sun
- Department of Ophthalmology, Second Hospital of JiLin University, ChangChun 130041, China
| | - Guang-Yu Li
- Department of Ophthalmology, Second Hospital of JiLin University, ChangChun 130041, China.
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