PMID- 33413449 OWN - NLM STAT- MEDLINE DCOM- 20210127 LR - 20240330 IS - 1743-422X (Electronic) IS - 1743-422X (Linking) VI - 18 IP - 1 DP - 2021 Jan 7 TI - Higher expression of monocyte chemotactic protein 1 in mild COVID-19 patients might be correlated with inhibition of Type I IFN signaling. PG - 12 LID - 10.1186/s12985-020-01478-9 [doi] LID - 12 AB - BACKGROUND: Chemokine levels in severe coronavirus disease 2019 (COVID-19) patients have been shown to be markedly elevated. But the role of chemokines in mild COVID-19 has not yet been established. According to the epidemiological statistics, most of the COVID-19 cases in Shiyan City, China, have been mild. The purpose of this study was to evaluate the level of chemokines in mild COVID-19 patients and explore the correlation between chemokines and host immune response. METHODS: In this study, we used an enzyme-linked immunosorbent assay to detect serum levels of chemokines in COVID-19 patients in Shiyan City. Expression of chemokine receptors and of other signaling molecules was measured by real-time polymerase chain reaction. RESULTS: We first demonstrated that COVID-19 patients, both sever and mild cases, are characterized by higher level of chemokines. Specifically, monocyte chemotactic protein 1 (MCP-1) is expressed at higher levels both in severe and mild cases of COVID-19. The receptor of MCP-1, C-C chemokine receptor type 2, was expressed at higher levels in mild COVID-19 patients. Finally, we observed a significant negative correlation between expression levels of interferon (IFN) regulatory factor 3 (IRF3) and serum levels of MCP-1 in mild COVID-19 patients. CONCLUSION: Higher expression of MCP-1 in mild COVID-19 patients might be correlated with inhibition of IFN signaling. The finding adds to our understanding of the immunopathological mechanisms of severe acute respiratory syndrome coronavirus 2 infection and provides potential therapeutic targets and strategies. FAU - Xi, Xueyan AU - Xi X AUID- ORCID: 0000-0002-3164-9895 AD - Institute of Basic Medical Science, Hubei University of Medicine, Shiyan, No. 30 Renmin Nanlu, Shiyan City, Hubei Province, 442000, People's Republic of China. xixueyan2001@126.com. AD - Hubei Key Laboratory of Embryonic Stem Cell Research, Hubei University of Medicine, Shiyan City, People's Republic of China. xixueyan2001@126.com. AD - Renmin Hospital, Hubei University of Medicine, Shiyan City, People's Republic of China. xixueyan2001@126.com. FAU - Guo, Yang AU - Guo Y AD - Institute of Basic Medical Science, Hubei University of Medicine, Shiyan, No. 30 Renmin Nanlu, Shiyan City, Hubei Province, 442000, People's Republic of China. AD - Hubei Key Laboratory of Embryonic Stem Cell Research, Hubei University of Medicine, Shiyan City, People's Republic of China. FAU - Zhu, Min AU - Zhu M AD - Institute of Basic Medical Science, Hubei University of Medicine, Shiyan, No. 30 Renmin Nanlu, Shiyan City, Hubei Province, 442000, People's Republic of China. FAU - Wei, Yuhui AU - Wei Y AD - Institute of Neuroscience, Hubei University of Medicine, Shiyan City, People's Republic of China. FAU - Li, Gang AU - Li G AD - Renmin Hospital, Hubei University of Medicine, Shiyan City, People's Republic of China. FAU - Du, Boyu AU - Du B AD - Institute of Basic Medical Science, Hubei University of Medicine, Shiyan, No. 30 Renmin Nanlu, Shiyan City, Hubei Province, 442000, People's Republic of China. FAU - Wang, Yunfu AU - Wang Y AD - Institute of Basic Medical Science, Hubei University of Medicine, Shiyan, No. 30 Renmin Nanlu, Shiyan City, Hubei Province, 442000, People's Republic of China. wyfymc@sina.com. AD - Institute of Neuroscience, Hubei University of Medicine, Shiyan City, People's Republic of China. wyfymc@sina.com. LA - eng GR - 20Y01/Emergency Research Project for COVID-19 of Shiyan City/International GR - 2020XGFYZR02/Emergency Research Project for COVID-19 of Hubei University of Medicine/International GR - 2020XGFYZR03/Emergency Research Project for COVID-19 of Hubei University of Medicine/International GR - HBMUPI201804/The Principal Grant of Hubei University of Medicine/International GR - 2017CFB238/Hubei Provincial Natural Science Foundation/International PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210107 PL - England TA - Virol J JT - Virology journal JID - 101231645 RN - 0 (Chemokine CCL2) RN - 0 (Chemokines) RN - 0 (IRF3 protein, human) RN - 0 (Interferon Regulatory Factor-3) RN - 0 (Interferon Type I) RN - 0 (Receptors, CCR2) SB - IM MH - Adult MH - COVID-19/*immunology/metabolism/physiopathology MH - Chemokine CCL2/*blood MH - Chemokines/*blood MH - China MH - Disease Progression MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Humans MH - Interferon Regulatory Factor-3/blood MH - Interferon Type I/*metabolism MH - Leukocytes, Mononuclear/metabolism MH - Male MH - Middle Aged MH - Receptors, CCR2/blood MH - Signal Transduction/immunology PMC - PMC7788192 OTO - NOTNLM OT - COVID-19 OT - Chemokines OT - IFN signaling OT - MCP-1 OT - Mild COIS- The authors declare that they have no competing interests. EDAT- 2021/01/09 06:00 MHDA- 2021/01/28 06:00 PMCR- 2021/01/07 CRDT- 2021/01/08 05:45 PHST- 2020/09/08 00:00 [received] PHST- 2020/12/21 00:00 [accepted] PHST- 2021/01/08 05:45 [entrez] PHST- 2021/01/09 06:00 [pubmed] PHST- 2021/01/28 06:00 [medline] PHST- 2021/01/07 00:00 [pmc-release] AID - 10.1186/s12985-020-01478-9 [pii] AID - 1478 [pii] AID - 10.1186/s12985-020-01478-9 [doi] PST - epublish SO - Virol J. 2021 Jan 7;18(1):12. doi: 10.1186/s12985-020-01478-9.