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Mizuno M, Nakano R, Nose S, Matsumura M, Nii Y, Kurogochi K, Sugiya H, Uechi M. Canonical NF-κB p65, but Not p105, Contributes to IL-1β-Induced IL-8 Expression in Cardiac Fibroblasts. Front Immunol 2022; 13:863309. [PMID: 35514973 PMCID: PMC9065446 DOI: 10.3389/fimmu.2022.863309] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 03/15/2022] [Indexed: 11/24/2022] Open
Abstract
Cardiac fibroblasts participate in the inflammatory process of heart diseases as sentinel cells of the cardiac tissue. In this study, we investigated the effect of the proinflammatory cytokine, interleukin 1β (IL-1β), on the expression of interleukin 8 (IL-8), which contributes to the induction of innate immunity via the activation and recruitment of innate immune cells, such as neutrophils, to the site of inflammation in canine cardiac fibroblasts. IL-1β mediates IL-8 mRNA expression and protein release in a dose- and time-dependent manner. The IL-β-mediated IL-8 protein release and mRNA expression were inhibited by 2-[(aminocarbonyl)amino]-5-(4-fluorophenyl)-3-thiophenecarboxamide, an inhibitor of the transcription factor, nuclear factor (NF)-κB. In cells treated with IL-1β, NF-κB p65 and p105 were transiently phosphorylated, indicating the activation of NF-κB. However, IL-1β failed to induce IL-8 mRNA expression in the cells transfected with p65 small interfering RNA (siRNA), but not in those transfected with p105 siRNA. These observations suggest that IL-1β induces IL-8 expression via the activation of NF-κB p65 in canine cardiac fibroblasts.
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Affiliation(s)
- Masashi Mizuno
- Japan Animal Specialty Medical Institute, Tsuzuki, Yokohama, Japan
| | - Rei Nakano
- Japan Animal Specialty Medical Institute, Tsuzuki, Yokohama, Japan.,Laboratory for Mucosal Immunity, Center for Integrative Medical Sciences, RIKEN Yokohama Institute, Yokohama, Japan.,Laboratory of Veterinary Radiotherapy, Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, Fujisawa, Japan
| | - Saki Nose
- Japan Animal Specialty Medical Institute, Tsuzuki, Yokohama, Japan
| | - Moeka Matsumura
- Japan Animal Specialty Medical Institute, Tsuzuki, Yokohama, Japan
| | - Yasuyuki Nii
- Japan Animal Specialty Medical Institute, Tsuzuki, Yokohama, Japan
| | | | - Hiroshi Sugiya
- Japan Animal Specialty Medical Institute, Tsuzuki, Yokohama, Japan
| | - Masami Uechi
- Japan Animal Specialty Medical Institute, Tsuzuki, Yokohama, Japan
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Sevoflurane protects cardiomyocytes against hypoxia/reperfusion injury via LINC01133/miR-30a-5p axis. Biosci Rep 2021; 40:226934. [PMID: 33175096 PMCID: PMC7692536 DOI: 10.1042/bsr20200713] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 10/21/2020] [Accepted: 11/02/2020] [Indexed: 12/28/2022] Open
Abstract
Previous studies failed to elucidate the detailed mechanisms of anesthetic preconditioning as a protective approach against ischemic/reperfusion (I/R) injury in cells. The present study mainly centered on discovering the mechanisms of Sevoflurane (Sev) in preventing cardiomyocytes against I/R injury. Human cardiomyocyte AC16 cell line was used to simulate I/R injury based on a hypoxia/reperfusion (H/R) model. After Sev treatment, cell viability and apoptosis were detected by MTT assay and flow cytometry, respectively. Lactate dehydrogenase (LDH) content was measured using an LDH Detection Kit. Relative mRNA and protein expressions of LINC01133, miR-30a-5p and apoptosis-related proteins were detected using quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot as needed. Target gene of miR-30a-5p and their potential binding sites were predicted using Starbase and confirmed by dual-luciferase reporter assay. Cell behaviors were assessed again after miR-30a-5p and LINC01133 transfection. Sev could improve cell viability, reduce LDH leakage, and down-regulate the expressions of apoptosis-related proteins (Bax, cleaved caspase-3 and cleaved caspase-9) and LINC01133 as well as up-regulate miR-30a-5p and Bcl-2 expressions in H/R cells. MiR-30a-5p was the target of LINC01133, and up-regulating miR-30a-5p enhanced the effects of Sev in H/R cells, with a suppression on H/R-induced activation of the p53 signaling pathway. However, up-regulating LINC01133 reversed the enhancing effects of miR-30a-5p on Sev pretreatment in H/R cells. Sev could protect cardiomyocytes against H/R injury through the miR-30a-5p/LINC01133 axis, which may provide a possible therapeutic method for curing cardiovascular I/R injury.
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Wenlan L, Zhongyuan X, Shaoqing L, Liying Z, Bo Z, Min L. MiR-34a-5p mediates sevoflurane preconditioning induced inhibition of hypoxia/reoxygenation injury through STX1A in cardiomyocytes. Biomed Pharmacother 2018; 102:153-159. [PMID: 29554593 DOI: 10.1016/j.biopha.2018.03.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 02/27/2018] [Accepted: 03/02/2018] [Indexed: 01/11/2023] Open
Abstract
Anesthetic preconditioning is a cellular protective approach whereby exposure to a volatile anesthetic renders cardio injury. Sevoflurane preconditioning has been shown to exhibit cardio protective effect on hypoxia/reoxygenation (H/R) injury, but the underlying mechanism is unclear. Syntaxin 1A (STX1A), an important regulator in cardio disease, was predicted to be the target gene of microRNA-34a-5p (miR-34a-5p). The current research was designed to delineate the role of miR-34a-5p in regulating sevoflurane preconditioning in cardiomyocytes injury. In this study, the results demonstrated that the expression of STX1A was significantly increased, while miR-34a-5p was dramatically decreased in sev-preconditioning H9c2 cells as compared with cells only under H/R stimulation. Moreover, miR-34a-5p regulated the protective effect of sev-preconditioning in injured H9c2 cells by mediating cell proliferation and cell apoptosis. Additionally, the luciferase report confirmed the targeting reaction between STX1A and miR-34a-5p. Taken together, our study suggested that miR-34a-5p regulated sev-preconditioning induced inhibition of hypoxia/reoxygenation injury through mediating STX1A, provided a potential therapeutic target for anesthetic protection in cardio disease.
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Affiliation(s)
- Li Wenlan
- Department of Anesthesia, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, China
| | - Xia Zhongyuan
- Department of Anesthesia, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, China.
| | - Lei Shaoqing
- Department of Anesthesia, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, China
| | - Zhan Liying
- Department of Anesthesia, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, China
| | - Zhao Bo
- Department of Anesthesia, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, China
| | - Liu Min
- Department of Anesthesia, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, China
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