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Wang J, Liu Q, Zhou Y, Cao C, Chen P, Meng G, Zhang J, Xin X, Huang G, Wu Y. Hepatitis B virus-mediated sodium influx contributes to hepatic inflammation via synergism with intrahepatic danger signals. iScience 2024; 27:108723. [PMID: 38283328 PMCID: PMC10819783 DOI: 10.1016/j.isci.2023.108723] [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: 08/03/2023] [Revised: 10/03/2023] [Accepted: 12/11/2023] [Indexed: 01/30/2024] Open
Abstract
The NACHT, LRR, and PYD domains-containing protein 3 (NLRP3) inflammasome has been involved in the pathogenesis of various chronic liver diseases. However, its role in hepatitis B virus (HBV)-associated hepatitis remains unknown. Here we demonstrate the synergistic effect of HBV with potential intrahepatic danger signals on NLRP3 inflammasome activation. HBV exposure at the appropriate temporal points enhances potassium efflux-dependent NLRP3 inflammasome activation in macrophages and also increases NLRP3 inflammasome-mediated inflammation in HBV-transgenic mouse model. HBV-mediated synergism with intrahepatic signals represented by ATP molecules on NLRP3 activation was observed via relevance analysis, confocal microscopy, and co-immunoprecipitation, and its effector cytokines exhibit positive associations with hepatic inflammation in patients with severe hepatitis B. Furthermore, the synergism of HBV on NLRP3 inflammasome activation owes to increased sodium influx into macrophages. Our data demonstrate that HBV contributes to hepatic inflammation via sodium influx-dependent synergistic activation of NLRP3 inflammasome, which provides a deeper understanding of immune pathogenesis in HBV-associated hepatitis.
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Affiliation(s)
- Jingxue Wang
- Department of Immunology, Army Medical University, Chongqing, P.R. China
| | - Qian Liu
- Department of Clinical Laboratory Medicine, Southwest Hospital, Army Medical University, Chongqing, P.R. China
| | - Yiwen Zhou
- Department of Immunology, Army Medical University, Chongqing, P.R. China
| | - Chunhao Cao
- Department of Integrated Traditional Chinese and Western Medicine, The First Affiliate Hospital of Chongqing Medical University, Chongqing, P.R. China
| | - Penghui Chen
- Department of Neurobiology, Army Medical University, Chongqing, P.R. China
| | - Gang Meng
- Department of Pathology, Southwest Hospital, Army Medical University, Chongqing, P.R. China
| | - Ji Zhang
- Department of Immunology, Army Medical University, Chongqing, P.R. China
| | - Xiaojuan Xin
- Department of Infectious Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing, P.R. China
| | - Guangyu Huang
- Department of Infectious Diseases, The Fourth Affiliated Hospital Zhejiang University School of Medicine, Yiwu, Zhejiang, P.R. China
| | - Yuzhang Wu
- Department of Immunology, Army Medical University, Chongqing, P.R. China
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Notsu T, Kurata Y, Ninomiya H, Taufiq F, Komatsu K, Miake J, Sawano T, Tsuneto M, Shirayoshi Y, Hisatome I. Inhibition of the uric acid efflux transporter ABCG2 enhances stimulating effect of soluble uric acid on IL-1β production in murine macrophage-like J774.1 cells. Hypertens Res 2023; 46:2368-2377. [PMID: 37592041 DOI: 10.1038/s41440-023-01391-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 06/12/2023] [Accepted: 07/08/2023] [Indexed: 08/19/2023]
Abstract
Soluble uric acid (UA) absorbed by cells through UA transporters (UATs) accumulates intracellularly, activates the NLRP3 inflammasome and thereby increases IL-1β secretion. ABCG2 transporter excludes intracellular UA. However, it remains unknown whether ABCG2 inhibition leads to intracellular accumulation of UA and increases IL-1β production. In this study, we examined whether genetic and pharmacological inhibition of ABCG2 could increase IL-1β production in mouse macrophage-like J774.1 cells especially under hyperuricemic conditions. We determined mRNA and protein levels of pro-IL-1β, mature IL-1β, caspase-1 and several UATs in culture supernatants and lysates of J774.1 cells with or without soluble UA pretreatment. Knockdown experiments using an shRNA against ABCG2 and pharmacological experiments with an ABCG2 inhibitor were conducted. Extracellularly applied soluble UA increased protein levels of pro-IL-1β, mature IL-1β and caspase-1 in the culture supernatant from lipopolysaccharide (LPS)-primed and monosodium urate crystal (MSU)-stimulated J774.1 cells. J774.1 cells expressed UATs of ABCG2, GLUT9 and MRP4, and shRNA knockdown of ABCG2 increased protein levels of pro-IL-1β and mature IL-1β in the culture supernatant. Soluble UA increased mRNA and protein levels of ABCG2 in J774.1 cells without either LPS or MSU treatment. An ABCG2 inhibitor, febuxostat, but not a urate reabsorption inhibitor, dotinurad, enhanced IL-1β production in cells pretreated with soluble UA. In conclusion, genetic and pharmacological inhibition of ABCG2 enhanced IL-1β production especially under hyperuricemic conditions by increasing intracellularly accumulated soluble UA that activates the NLRP3 inflammasome and pro-IL-1β transcription in macrophage-like J774.1 cells.
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Affiliation(s)
- Tomomi Notsu
- Division of Regenerative Medicine and Therapeutics, Department of Genetic Medicine and Regenerative Therapeutics, Institute of Regenerative Medicine and Biofunction, Tottori University, Yonago, Japan
| | - Yasutaka Kurata
- Department of Physiology II, Kanazawa Medical University, Uchinada, 920-0293, Japan.
| | - Haruaki Ninomiya
- Department of Biological Regulation, Tottori University Faculty of Medicine, Yonago, Japan
| | - Fikri Taufiq
- Department of Cardiology, Faculty of Medicine, Brawijaya University, Kota Malang, Jawa Timur, Indonesia
| | - Koji Komatsu
- Department of Psychiatry disease, Tottori University, Yonago, Japan
| | - Junichiro Miake
- Division of Pharmacology, Department of Pathophysiological and Therapeutic Science, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Tatsuya Sawano
- Division of Pharmacology, Department of Pathophysiological and Therapeutic Science, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Motokazu Tsuneto
- Division of Regenerative Medicine and Therapeutics, Department of Genetic Medicine and Regenerative Therapeutics, Institute of Regenerative Medicine and Biofunction, Tottori University, Yonago, Japan
| | - Yasuaki Shirayoshi
- Division of Regenerative Medicine and Therapeutics, Department of Genetic Medicine and Regenerative Therapeutics, Institute of Regenerative Medicine and Biofunction, Tottori University, Yonago, Japan
| | - Ichiro Hisatome
- Department of Cardiology, National Hospital Organization Yonago Medical Center, Yonago, Japan
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Man Q, Gao Z, Chen K. Functional Potassium Channels in Macrophages. J Membr Biol 2023; 256:175-187. [PMID: 36622407 DOI: 10.1007/s00232-022-00276-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Accepted: 12/30/2022] [Indexed: 01/10/2023]
Abstract
Macrophages are the predominant component of innate immunity, which is an important protective barrier of our body. Macrophages are present in all organs and tissues of the body, their main functions include immune surveillance, bacterial killing, tissue remodeling and repair, and clearance of cell debris. In addition, macrophages can present antigens to T cells and facilitate inflammatory response by releasing cytokines. Macrophages are of high concern due to their crucial roles in multiple physiological processes. In recent years, new advances are emerging after great efforts have been made to explore the mechanisms of macrophage activation. Ion channel is a class of multimeric transmembrane protein that allows specific ions to go through cell membrane. The flow of ions through ion channel between inside and outside of cell membrane is required for maintaining cell morphology and intracellular signal transduction. Expressions of various ion channels in macrophages have been detected. The roles of ion channels in macrophage activation are gradually caught attention. K+ channels are the most studied channels in immune system. However, very few of published papers reviewed the studies of K+ channels on macrophages. Here, we will review the four types of K+ channels that are expressed in macrophages: voltage-gated K+ channel, calcium-activated K+ channel, inwardly rectifying K+ channel and two-pore domain K+ channel.
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Affiliation(s)
- Qiaoyan Man
- Department of Pharmacology, Ningbo University School of Medicine, A506, Wang Changlai Building818 Fenghua Rd, Ningbo, China
| | - Zhe Gao
- Ningbo Institute of Medical Sciences, 42 Yangshan Rd, Ningbo, China.
| | - Kuihao Chen
- Department of Pharmacology, Ningbo University School of Medicine, A506, Wang Changlai Building818 Fenghua Rd, Ningbo, China.
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