miR-3146 induces neutrophil extracellular traps to aggravate gout flare

• Main Authors: Feng, F. (Author), Li, X. (Author), Shan, L. (Author), Yang, D. (Author), Zhu, D. (Author)
• Format: Article
• Language: English
• Published: John Wiley and Sons Inc 2021
• Subjects: adult; Adult; aged; Aged; animal; animal experiment; Animals; antagomir; Article; clinical article; controlled study; disease model; Disease Models, Animal; extracellular trap; Extracellular Traps; genetics; gout; Gout; histopathology; human; human cell; Humans; hyperuricemia; in vivo study; luciferase assay; male; Male; metabolism; microRNA; microRNA 1; microRNA 3146; MicroRNAs; middle aged; Middle Aged; miR-3146; molecular mechanics; neutrophil extracellular traps; nonhuman; oxidative stress; pathogenesis; pathology; protein synthesis; protein targeting; rat; Rats; Rats, Sprague-Dawley; reactive oxygen metabolite; real time reverse transcription polymerase chain reaction; SIRT1; sirtuin 1; Sprague Dawley rat; unclassified drug; urate; Western blotting
• Online Access: View Fulltext in Publisher

 Background: Gout is an inflammatory arthritis and is characterized by the accumulation of deposited monosodium urate (MSU) crystals in the joints. miRNAs may act as key regulators of gout pathogenesis. The aim of our study was to explore the underlying role and molecular mechanism of miR-3146 in the formation of neutrophil extracellular traps (NETs) during the pathogenesis of gout. Methods: The expression of miR-3146 and sirtuin 1 (SIRT1) was determined by real-time reverse transcription-polymerase chain reaction and Western blot, respectively. The luciferase reporter assay was performed to identify the targeting relationship between miR-3146 and SIRT1. Reactive oxygen species (ROS) production was detected by fluorescent staining. NETs formation was demonstrated via immunofluorescence staining and ELISA method. Gout model was induced in rats to verify the effects of miR-3146 inhibition on histopathological changes and NETs. Results: Here, we found miR-3146 expression was dramatically increased in neutrophils of patients with gout, which was accompanied with the higher levels of NETs. MSU crystals significantly increased miR-3146 expression and ROS production in neutrophils. The NETs process was also triggered by MSU crystals. Furthermore, we verified the interaction between miR-3146 and SIRT1. Additionally, antagomir-3146-based therapy effectively inhibited the formation of NETs in rats with gout. Conclusion: Our findings indicated that miR-3146-mediated NETs formation may play a potential role in the pathogenesis of gout. These results suggested that miR-3146 could be used as a potential therapeutic target for the treatment of gout. © 2021 The Authors. Journal of Clinical Laboratory Analysis published by Wiley Periodicals LLC.