PMID- 37634445 OWN - NLM STAT- Publisher LR - 20231017 IS - 1878-1705 (Electronic) IS - 1567-5769 (Linking) VI - 124 IP - Pt A DP - 2023 Nov TI - Ruxolitinib ameliorated coxsackievirus B3-induced acute viral myocarditis by suppressing the JAK-STAT pathway. PG - 110797 LID - S1567-5769(23)01122-0 [pii] LID - 10.1016/j.intimp.2023.110797 [doi] AB - BACKGROUND: Accumulating evidences have demonstrated that overwhelming inflammation occurs in the process of Coxsackievirus B3 (CVB3)-induced acute viral myocarditis (AVM). No specific therapy is available. More than an effective Janus-associated kinase (JAK) inhibiter, ruxolitinib exerts a critical role in the inflammatory diseases. In this study, we investigated the potential effect of ruxolitinib on CVB3-induced acute viral myocarditis. METHOD: In vivo, BALB/c mice were intraperitoneally injected of CVB3, treated of a successive gavage of ruxolitinib for seven days, and subjected to a series of analysis. In vitro, primary bone marrow-derived macrophages (BMDMs) and cardiac fibroblasts were isolated, cultured, treated, harvested and finally detected. RESULTS: In vivo, acute viral myocarditis was successfully induced by the injection of CVB3 characterized by impaired cardiac function, predominant infiltration of inflammatory cells, necroptosis of myocardium, great increase of cardiac troponin I (cTnI) and cytokine levels, replication of CVB3, and excessive activation of JAK-STAT pathways. Oral administration of ruxolitinib suppressed the activation of JAK-STAT pathway in a dosage-dependent way, lessened the infiltration of inflammatory cells and necroptosis of myocardium, reduced the levels of cTnI and cytokines, and finally alleviated CVB3-induced cardiac dysfunction, with the reduced production of type I interferon and no promising effect on the replication of CVB3. In vitro, the treatment of ruxolitinib inhibited the activation of JAK-STAT pathway and increase of multiple cytokines mRNA levels in BMDMs and had no protective effect against CVB3 replication in cardiac fibroblasts. CONCLUSIONS: Our study suggested that ruxolitinib ameliorated CVB3-induced AVM by inhibiting the activation of JAK-STAT pathway, infiltration of inflammatory cells and necroptosis of myocardium, which may provide a novel strategy for AVM therapy. CI - Copyright (c) 2023. Published by Elsevier B.V. FAU - Chen, Liang AU - Chen L AD - Department and Institute of Infectious Disease, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China. FAU - Zhu, Meng-Ying AU - Zhu MY AD - Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China. FAU - Wang, Gao-Xiang AU - Wang GX AD - Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1095 Jiefang Avenue, Wuhan, Hubei 430030, China. FAU - Lu, Li-Li AU - Lu LL AD - Institute of Pharmaceutical Innovation, College of Medicine, Wuhan University of Science and Technology, Wuhan 430065, Hubei, China. FAU - Lin, Li AU - Lin L AD - Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China. Electronic address: linli@tjh.tjmu.edu.cn. FAU - Lei, Lei AU - Lei L AD - Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China. Electronic address: lltongji2015@163.com. FAU - Wu, Ting AU - Wu T AD - Department and Institute of Infectious Disease, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China. Electronic address: wuting@tjh.tjmu.edu. LA - eng PT - Journal Article DEP - 20230825 PL - Netherlands TA - Int Immunopharmacol JT - International immunopharmacology JID - 100965259 SB - IM OTO - NOTNLM OT - Acute viral myocarditis OT - Coxsackievirus B3 OT - Inflammation OT - Janus-associated kinase OT - Ruxolitinib COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2023/08/28 00:41 MHDA- 2023/08/28 00:41 CRDT- 2023/08/27 18:08 PHST- 2023/02/10 00:00 [received] PHST- 2023/08/02 00:00 [revised] PHST- 2023/08/11 00:00 [accepted] PHST- 2023/08/28 00:41 [pubmed] PHST- 2023/08/28 00:41 [medline] PHST- 2023/08/27 18:08 [entrez] AID - S1567-5769(23)01122-0 [pii] AID - 10.1016/j.intimp.2023.110797 [doi] PST - ppublish SO - Int Immunopharmacol. 2023 Nov;124(Pt A):110797. doi: 10.1016/j.intimp.2023.110797. Epub 2023 Aug 25.