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Qi F, Yan Y, Lv Q, Liu M, Liu M, Li F, Deng R, Liang X, Li S, Mou G, Bao L. IL-37 possesses both anti-inflammatory and antiviral effects against Middle East respiratory syndrome coronavirus infection. Animal Model Exp Med 2024. [PMID: 38803038 DOI: 10.1002/ame2.12435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 05/05/2024] [Indexed: 05/29/2024] Open
Abstract
BACKGROUND The aim was to elucidate the function of IL-37 in middle east respiratory syndrome coronavirus (MERS-CoV) infection, thereby providing a novel therapeutic strategy for managing the clinical treatment of inflammatory response caused by respiratory virus infection. METHODS We investigated the development of MERS by infecting hDPP4 mice with hCoV-EMC (107 TCID50 [50% tissue culture infectious dose]) intranasally. We infected A549 cells with MERS-CoV, which concurrently interfered with IL-37, detecting the viral titer, viral load, and cytokine expression at certain points postinfection. Meanwhile, we administered IL-37 (12.5 μg/kg) intravenously to hDPP4 mice 2 h after MERS-CoV-2 infection and collected the serum and lungs 5 days after infection to investigate the efficacy of IL-37 in MERS-CoV infection. RESULTS The viral titer of MERS-CoV-infected A549 cells interfering with IL-37 was significantly reduced by 4.7-fold, and the viral load of MERS-CoV-infected hDPP4 mice was decreased by 59-fold in lung tissue. Furthermore, the administration of IL-37 suppressed inflammatory cytokine and chemokine (monocyte chemoattractant protein 1, interferon-γ, and IL-17A) expression and ameliorated the infiltration of inflammatory cells in hDPP4 mice. CONCLUSION IL-37 exhibits protective properties in severe pneumonia induced by MERS-CoV infection. This effect is achieved through attenuation of lung viral load, suppression of inflammatory cytokine secretion, reduction in inflammatory cell infiltration, and mitigation of pulmonary injury.
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Affiliation(s)
- Feifei Qi
- Beijing Key Laboratory for Animal Models of Emerging and Reemerging Infectious Diseases, NHC Key Laboratory of Comparative Medicine, Institute of Laboratory Animal Science, CAMS & PUMC, Beijing, China
- National Center of Technology Innovation for Animal Model, Beijing, China
| | - Yiwei Yan
- Beijing Key Laboratory for Animal Models of Emerging and Reemerging Infectious Diseases, NHC Key Laboratory of Comparative Medicine, Institute of Laboratory Animal Science, CAMS & PUMC, Beijing, China
| | - Qi Lv
- Beijing Key Laboratory for Animal Models of Emerging and Reemerging Infectious Diseases, NHC Key Laboratory of Comparative Medicine, Institute of Laboratory Animal Science, CAMS & PUMC, Beijing, China
- National Center of Technology Innovation for Animal Model, Beijing, China
| | - Mingya Liu
- Beijing Key Laboratory for Animal Models of Emerging and Reemerging Infectious Diseases, NHC Key Laboratory of Comparative Medicine, Institute of Laboratory Animal Science, CAMS & PUMC, Beijing, China
| | - Ming Liu
- Beijing Key Laboratory for Animal Models of Emerging and Reemerging Infectious Diseases, NHC Key Laboratory of Comparative Medicine, Institute of Laboratory Animal Science, CAMS & PUMC, Beijing, China
| | - Fengdi Li
- Beijing Key Laboratory for Animal Models of Emerging and Reemerging Infectious Diseases, NHC Key Laboratory of Comparative Medicine, Institute of Laboratory Animal Science, CAMS & PUMC, Beijing, China
- National Center of Technology Innovation for Animal Model, Beijing, China
| | - Ran Deng
- Beijing Key Laboratory for Animal Models of Emerging and Reemerging Infectious Diseases, NHC Key Laboratory of Comparative Medicine, Institute of Laboratory Animal Science, CAMS & PUMC, Beijing, China
- National Center of Technology Innovation for Animal Model, Beijing, China
| | - Xujian Liang
- Beijing Key Laboratory for Animal Models of Emerging and Reemerging Infectious Diseases, NHC Key Laboratory of Comparative Medicine, Institute of Laboratory Animal Science, CAMS & PUMC, Beijing, China
- National Center of Technology Innovation for Animal Model, Beijing, China
| | - Shuyue Li
- Beijing Key Laboratory for Animal Models of Emerging and Reemerging Infectious Diseases, NHC Key Laboratory of Comparative Medicine, Institute of Laboratory Animal Science, CAMS & PUMC, Beijing, China
| | - Guocui Mou
- Beijing Key Laboratory for Animal Models of Emerging and Reemerging Infectious Diseases, NHC Key Laboratory of Comparative Medicine, Institute of Laboratory Animal Science, CAMS & PUMC, Beijing, China
| | - Linlin Bao
- Beijing Key Laboratory for Animal Models of Emerging and Reemerging Infectious Diseases, NHC Key Laboratory of Comparative Medicine, Institute of Laboratory Animal Science, CAMS & PUMC, Beijing, China
- National Center of Technology Innovation for Animal Model, Beijing, China
- State Key Laboratory of Respiratory Health and Multimorbidity, Beijing, China
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Jo H, Jeoung J, Shim K, Jeoung D. Nur77 Mediates Anaphylaxis by Regulating miR-21a. Curr Issues Mol Biol 2024; 46:3175-3192. [PMID: 38666929 PMCID: PMC11048962 DOI: 10.3390/cimb46040199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 04/01/2024] [Accepted: 04/04/2024] [Indexed: 04/28/2024] Open
Abstract
Nur77 belongs to the NR4A subfamily of orphan nuclear hormone receptors. It has been shown to play important roles in metabolism, cancer progression, cellular differentiation, and the regulation of immune process. However, there has yet to be research reporting on the role of Nur77 in allergic inflammations such as anaphylaxis. This study aimed to identify molecules that could mediate allergic inflammations. To this end, we performed RNA sequencing analysis employing bone marrow-derived mast cells (BMMCs). Antigen (DNP-HSA) stimulation increased the expression levels of transcription factors such as Nr4a3 (NOR1), Nr4a1 (Nur77), and Nr4a2 (Nurr1). We focused our study on Nur77. Antigen stimulation increased the expression of Nur77 in a time- and dose-dependent manner in rat basophilic leukemia cells (RBL2H3). The downregulation of Nur77 prevented both antigen-induced increase in β-hexosaminidase activity as well as hallmarks of allergic reactions such as HDAC3, COX2, and MCP1 in RBL2H3 cells. Nur77 was necessary for both passive cutaneous anaphylaxis (PCA) and passive systemic anaphylaxis (PSA). TargetScan analysis predicted that miR-21a would be a negative regulator of Nur77. miR-21a mimic negatively regulated PCA and PSA by inhibiting the hallmarks of allergic reactions. ChIP assays showed that c-JUN could bind to the promoter sequences of Nur77. Antigen stimulation increased the expression of c-JUN in RBL2H3 cells. Altogether, our findings demonstrate the regulatory role played by Nur77-miR-21a loop in allergic inflammations such as anaphylaxis, making this the first report to present the role played by Nur77 in an allergic inflammation. Our results suggest that Nur77 and miR-21 might serve as targets for developing anti-allergy drugs.
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Affiliation(s)
| | | | | | - Dooil Jeoung
- Department of Biochemistry, Kangwon National University, Chuncheon 24341, Republic of Korea; (H.J.); (J.J.); (K.S.)
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Cho SX, Rudloff I, Ellisdon AM, Nold-Petry CA, Nold MF. Thirteen years to get from b to a: one of the neglected isoforms of IL-37 enters the stage. Cell Mol Immunol 2024; 21:201-202. [PMID: 38105292 PMCID: PMC10805707 DOI: 10.1038/s41423-023-01111-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 11/15/2023] [Indexed: 12/19/2023] Open
Affiliation(s)
- Steven X Cho
- Ritchie Centre, Hudson Institute of Medical Research, Melbourne, VIC, Australia
- Department of Pediatrics, Monash University, Melbourne, VIC, Australia
| | - Ina Rudloff
- Ritchie Centre, Hudson Institute of Medical Research, Melbourne, VIC, Australia
- Department of Pediatrics, Monash University, Melbourne, VIC, Australia
| | - Andrew M Ellisdon
- Cancer Program, Biomedicine Discovery Institute, Monash University, Melbourne, VIC, Australia
| | - Claudia A Nold-Petry
- Ritchie Centre, Hudson Institute of Medical Research, Melbourne, VIC, Australia
- Department of Pediatrics, Monash University, Melbourne, VIC, Australia
| | - Marcel F Nold
- Ritchie Centre, Hudson Institute of Medical Research, Melbourne, VIC, Australia.
- Department of Pediatrics, Monash University, Melbourne, VIC, Australia.
- Monash Newborn, Monash Children's Hospital, Melbourne, VIC, Australia.
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