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Gao L, Wang H, Fang F, Liu J, Zhao C, Niu J, Wang Z, Zhong Y, Wang X. The roles of orphan nuclear receptor 4 group A1 and A2 in fibrosis. Int Immunopharmacol 2024; 139:112705. [PMID: 39029235 DOI: 10.1016/j.intimp.2024.112705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 07/11/2024] [Accepted: 07/14/2024] [Indexed: 07/21/2024]
Abstract
Fibrosis is not a disease but rather an outcome of the pathological tissue repair response. Many myofibroblasts are activated which lead to the excessive accumulation of extracellular matrix components such as collagen and fibronectin with fibrosis. A variety of organs, including kidney, liver, lung, heart and skin, can undergo fibrosis under the stimulation of exogenous or endogenous pathogenic factors. The orphan nuclear receptor 4 group A1 (NR4A1) and nuclear receptor 4 group A2(NR4A2)are belong to the nuclear receptor subfamily and inhibit the occurrence and development of fibrosis. NR4A1 is an inhibitory factor of TGF-β signaling transduction. Overexpression of NR4A1 in fibroblasts can reduce TGF-β induced collagen deposition and fibrosis related gene expression. Here, we summarize the current research progress on the NR4A1/2 and fibrosis, providing reference for the treatment of fibrosis.
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Affiliation(s)
- Lanjun Gao
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Hongshuang Wang
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Fang Fang
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Jiazhi Liu
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Chenchen Zhao
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Jieqi Niu
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Zheng Wang
- Hebei Key Laboratory of Integrative Medicine on Liver-Kidney Patterns Research, Shijiazhuang 050091, China; Institute of Integrative Medicine, College of Integrative Medicine, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
| | - Yan Zhong
- Hebei Key Laboratory of Integrative Medicine on Liver-Kidney Patterns Research, Shijiazhuang 050091, China; Institute of Integrative Medicine, College of Integrative Medicine, Hebei University of Chinese Medicine, Shijiazhuang 050200, China.
| | - Xiangting Wang
- Hebei Key Laboratory of Integrative Medicine on Liver-Kidney Patterns Research, Shijiazhuang 050091, 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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3
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Zhang T, Ma R, Li Z, Liu T, Yang S, Li N, Wang D. Nur77 alleviates cardiac fibrosis by upregulating GSK-3β transcription during aging. Eur J Pharmacol 2024; 965:176290. [PMID: 38158109 DOI: 10.1016/j.ejphar.2023.176290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 11/23/2023] [Accepted: 12/18/2023] [Indexed: 01/03/2024]
Abstract
Cardiac fibrosis is associated with aging, for which no targeted therapies are available. With aging, the levels of nerve growth factor-induced gene B (Nur77) are reduced during cardiac remodelling; however, its role in cardiac fibrosis in aging remains unclear. Here, we found that Nur77 knockout increased cardiac structure abnormalities, systolic and diastolic dysfunction, cardiac hypertrophy, and fibrotic marker expression in 15-month-old mice. Furthermore, Nur77 deficiency induced collagen type I (Col-1) and α-smooth muscle actin overproduction in transforming growth factor beta (TGF-β) treated H9c2 cells, whereas Nur77 overexpression attenuated this effect. Nur77 deficiency in vivo and in vitro downregulated glycogen synthase kinase (GSK)-3β expression and increased β-catenin activity, while its overexpression increased GSK-3β expression. GSK-3β knockdown counteracted the anti-fibrotic effect of Nur77 on TGF-β-treated H9c2 cells. Chromatin immunoprecipitation and luciferase reporter assay results suggested GSK-3β as the direct target of Nur77. Our findings suggest that Nur77 directly initiates GSK-3β transcription and age-related cardiac fibrosis partly through the GSK-3β/β-catenin pathway. This study proposes a novel mechanism for Nur77 regulating cardiac fibrosis and suggests Nur77 as a target for the prevention and treatment of aging-associated cardiac fibrosis and heart failure.
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Affiliation(s)
- Tiantian Zhang
- Department of Geriatrics, The First Hospital of China Medical University, Shenyang, 110001, Liaoning, People's Republic of China
| | - Ruzhe Ma
- Department of Gerontology and Geriatrics, Shengjing Hospital of China Medical University, Shenyang, 110004, People's Republic of China
| | - Zhichi Li
- Department of Gerontology and Geriatrics, Shengjing Hospital of China Medical University, Shenyang, 110004, People's Republic of China
| | - Tingting Liu
- Department of Geriatrics, The First Hospital of China Medical University, Shenyang, 110001, Liaoning, People's Republic of China
| | - Sijia Yang
- Department of Gerontology and Geriatrics, Shengjing Hospital of China Medical University, Shenyang, 110004, People's Republic of China
| | - Na Li
- Department of Gerontology and Geriatrics, Shengjing Hospital of China Medical University, Shenyang, 110004, People's Republic of China
| | - Difei Wang
- Department of Gerontology and Geriatrics, Shengjing Hospital of China Medical University, Shenyang, 110004, People's Republic of China.
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Huang L, Zuo Y, Yang H, He X, Zhang L. Identification of key genes as potential diagnostic and therapeutic targets for comorbidity of myasthenia gravis and COVID-19. Front Neurol 2024; 14:1334131. [PMID: 38384322 PMCID: PMC10879883 DOI: 10.3389/fneur.2023.1334131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 12/28/2023] [Indexed: 02/23/2024] Open
Abstract
Introduction Myasthenia gravis (MG) is a chronic autoimmune neuromuscular disorder. Coronavirus disease 2019 (COVID-19) has a significant impact on the health and quality of life of MG patients and may even trigger the onset of MG in some cases. With the worldwide development of the COVID-19 vaccination, several new-onset MG cases and exacerbations following the COVID-19 vaccines have been acknowledged. The potential link between myasthenia gravis (MG) and COVID-19 has prompted the need for further investigation into the underlying molecular mechanism. Methods and results The differential expression analysis identified six differentially expressed genes (DEGs) shared by myasthenia gravis (MG) and COVID-19, namely SAMD9, PLEK, GZMB, JUNB, NR4A1, and NR1D1. The relationship between the six common genes and immune cells was investigated in the COVID-19 dataset. The predictive value of the shared genes was assessed and a nomogram was constructed using machine learning algorithms. The regulatory miRNAs, transcription factors and small molecular drugs were predicted, and the molecular docking was carried out by AutoDock. Discussion We have identified six common DEGs of MG and COVID-19 and explored their immunological effects and regulatory mechanisms. The result may provide new insights for further mechanism research.
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Affiliation(s)
- Liyan Huang
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Yao Zuo
- Shandong University, Jinan, Shandong, China
- China Rehabilitation Research Center, Beijing Bo’ai Hospital, Beijing, China
| | - Hui Yang
- Department of Neurology, The Second Affiliated Hospital of Guizhou University of Chinese Medicine, Guiyang, China
| | - Xiaofang He
- Department of Pediatric Intensive Care Unit, Guizhou Provincial People's Hospital, Guiyang, China
| | - Lin Zhang
- Department of Neurology, The Second Affiliated Hospital of Guizhou University of Chinese Medicine, Guiyang, China
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Lin X, Zhang H, Chu Y, Zhang Y, Xu C, Xie H, Ruan Q, Lin J, Huang C, Chai D. Honokiol ameliorates angiotensin II-induced cardiac hypertrophy by promoting dissociation of the Nur77-LKB1 complex and activating the AMPK pathway. J Cell Mol Med 2024; 28:e18028. [PMID: 37985436 PMCID: PMC10805491 DOI: 10.1111/jcmm.18028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 10/15/2023] [Accepted: 10/24/2023] [Indexed: 11/22/2023] Open
Abstract
Pathological cardiac hypertrophy is a key contributor to heart failure, and the molecular mechanisms underlying honokiol (HNK)-mediated cardioprotection against this condition remain worth further exploring. This study aims to investigate the effect of HNK on angiotensin II (Ang II)-induced myocardial hypertrophy and elucidate the underlying mechanisms. Sprague-Dawley rats were exposed to Ang II infusion, followed by HNK or vehicle treatment for 4 weeks. Our results showed that HNK treatment protected against Ang II-induced myocardial hypertrophy, fibrosis and dysfunction in vivo and inhibited Ang II-induced hypertrophy in neonatal rat ventricular myocytes in vitro. Mechanistically, HNK suppressed the Ang II-induced Nur77 expression at the transcriptional level and promoted ubiquitination-mediated degradation of Nur77, leading to dissociation of the Nur77-LKB1 complex. This facilitated the translocation of LKB1 into the cytoplasm and activated the LKB1-AMPK pathway. Our findings suggest that HNK attenuates pathological remodelling and cardiac dysfunction induced by Ang II by promoting dissociation of the Nur77-LKB1 complex and subsequent activation of AMPK signalling. This study uncovers a novel role of HNK on the LKB1-AMPK pathway to protect against cardiac hypertrophy.
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Affiliation(s)
- Xiaoyan Lin
- Echocardiological Department, The First Affiliated HospitalFujian Medical UniversityFuzhouChina
| | - Hailin Zhang
- Cardiovascular Department, Fujian Institute of Hypertension, The First Affiliated HospitalFujian Medical UniversityFuzhouChina
| | - Yong Chu
- Cardiovascular Department, Fujian Institute of Hypertension, The First Affiliated HospitalFujian Medical UniversityFuzhouChina
| | - Yuze Zhang
- Cardiovascular Department, Fujian Institute of Hypertension, The First Affiliated HospitalFujian Medical UniversityFuzhouChina
| | - Changsheng Xu
- Cardiovascular Department, Fujian Institute of Hypertension, The First Affiliated HospitalFujian Medical UniversityFuzhouChina
| | - Hong Xie
- Cardiovascular Department, Fujian Institute of Hypertension, The First Affiliated HospitalFujian Medical UniversityFuzhouChina
| | - Qinyun Ruan
- Echocardiological Department, The First Affiliated HospitalFujian Medical UniversityFuzhouChina
| | - Jinxiu Lin
- Cardiovascular Department, Fujian Institute of Hypertension, The First Affiliated HospitalFujian Medical UniversityFuzhouChina
| | - Chun‐Kai Huang
- Cardiovascular Department, Fujian Institute of Hypertension, The First Affiliated HospitalFujian Medical UniversityFuzhouChina
| | - Dajun Chai
- Cardiovascular Department, Fujian Institute of Hypertension, The First Affiliated HospitalFujian Medical UniversityFuzhouChina
- Cardiovascular Department, National Regional Medical Center, Binhai Branch of the First Affiliated HospitalFujian Medical UniversityFuzhouChina
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Qin J, Niu B, Chen X, Hu C, Lu S, Li H, Liu W, Li J, Teng Z, Yang Y, Hu H, Xu Y, Huo S, Wu Z, Qiu Y, Zhou H, Fang M. Discovery of 5-(Pyrimidin-2-ylamino)-1 H-indole-2-carboxamide Derivatives as Nur77 Modulators with Selective and Potent Activity Against Triple-Negative Breast Cancer. J Med Chem 2023; 66:15847-15866. [PMID: 37983615 DOI: 10.1021/acs.jmedchem.3c01336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
The orphan nuclear receptor Nur77 has been validated as a potential drug target for treating breast cancer. Therefore, focusing on the SAR study of the lead 8b (KDSPR(Nur77) = 354 nM), we found the active compound ja which exhibited improved Nur77-binding capability (KDSPR(Nur77) = 91 nM) and excellent antiproliferative activities against breast cancer cell lines. Interestingly, ja acted as a potent and selective Nur77 antagonist, displaying good potency against triple-negative breast cancer (TNBC) cell lines but did not inhibit human normal breast cancer cell line MCF-10A (SI > 20). Exceptionally, ja Nur77-dependently caused mitochondria dysfunction and induced the caspase-dependent apoptosis by mediating the TP53 phosphorylation pathway. Moreover, ja significantly suppressed MDA-MB-231 xenograft tumor growth but had no apparent side effects in mice and zebrafish. Overall, ja demonstrated to be the first Nur77 modulator mediating the TP53 phosphorylation pathway that has the potential as a novel anticancer agent for TNBC.
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Affiliation(s)
- Jingbo Qin
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China
- Guangdong Provincial Key Laboratory of Biomedical Imaging and Guangdong Provincial Engineering Research Center of Molecular Imaging, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, China
| | - Boning Niu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China
- Tongji School of Pharmacy, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xiaohui Chen
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China
- Department of Clinical Laboratory, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, China
| | - Cheng Hu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China
| | - Sheng Lu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China
| | - Hongsheng Li
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China
| | - Weihao Liu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China
| | - Jiayi Li
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China
| | - Zihao Teng
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China
| | - Yinghuang Yang
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China
| | - Hongyu Hu
- Xingzhi College, Zhejiang Normal University, Lanxi 321004, China
| | - Yang Xu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China
| | - Shuaidong Huo
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China
| | - Zhen Wu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China
| | - Yingkun Qiu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China
| | - Hu Zhou
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China
| | - Meijuan Fang
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China
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Fang H, Li M, Wang X, Chen W, He F, Zhang Y, Guo K, Jin W, Li B, Fang M. Discovery of new DHA ethanolamine derivatives as potential anti-inflammatory agents targeting Nur77. Bioorg Chem 2023; 141:106887. [PMID: 37801784 DOI: 10.1016/j.bioorg.2023.106887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/21/2023] [Accepted: 09/24/2023] [Indexed: 10/08/2023]
Abstract
Docosahexaenoic acid (DHA) has a strong anti-inflammatory effect and is reported to bind to the ligand-binding domain (LBD) of the anti-inflammatory modulator Nur77. Recently, we have found that DHA ethanolamine (DHA-EA) exerts anti-inflammatory activity as a Nur77 modulator. Herein, using a fragment splicing-based drug design strategy, nineteen new DHA-EA derivatives were synthesized starting from DHA algae oil and then evaluated for their anti-inflammatory activity. The cell-based cytotoxicity assays showed that compounds J2, J9, and J18 had no noticeable effect on the cell morphology and viability of RAW 264.7, LO2, and MCR-5 cells. Meanwhile, J9 was identified as the most potent anti-inflammatory molecule in LPS-stimulated RAW 264.7 cells. Also, the molecular docking study and SPR assay demonstrated that J9 exhibited in vitro Nur77-binding affinity (KD = 8.58 × 10-6 M). Moreover, the mechanism studies revealed that the anti-inflammatory activity of J9 was associated with its inhibition of NF-κB activation in a Nur77-dependent manner. Notably, J9 could attenuate LPS-induced inflammation in the mouse acute lung injury (ALI) model. Overall, the DHA-EA derivative J9 targeting Nur77 is a potential candidate for developing anti-inflammatory and ALI-treating agents.
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Affiliation(s)
- Hua Fang
- Technical Innovation Center for Utilization of Marine Biological Resources, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
| | - Mengyu Li
- Technical Innovation Center for Utilization of Marine Biological Resources, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
| | - Xiumei Wang
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China
| | - Weizhu Chen
- Technical Innovation Center for Utilization of Marine Biological Resources, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
| | - Fengming He
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China
| | - Yiping Zhang
- Technical Innovation Center for Utilization of Marine Biological Resources, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
| | - Kaiqiang Guo
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China; College of Arts, Sichuan University, Chengdu 610207, China
| | - Wenhui Jin
- Technical Innovation Center for Utilization of Marine Biological Resources, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
| | - Baicun Li
- Center of Respiratory Medicine, China-Japan Friendship Hospital, National Center for Respiratory Medicine, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, National Clinical Research Center for Respiratory Diseases, Beijing, China.
| | - Meijuan Fang
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China.
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Cantu A, Gutierrez MC, Dong X, Leek C, Anguera M, Lingappan K. Modulation of recovery from neonatal hyperoxic lung injury by sex as a biological variable. Redox Biol 2023; 68:102933. [PMID: 38661305 PMCID: PMC10628633 DOI: 10.1016/j.redox.2023.102933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 10/07/2023] [Accepted: 10/11/2023] [Indexed: 04/26/2024] Open
Abstract
Recovery from lung injury during the neonatal period requires the orchestration of many biological pathways. The modulation of such pathways can drive the developing lung towards proper repair or persistent maldevelopment that can lead to a disease phenotype. Sex as a biological variable can regulate these pathways differently in the male and female lung exposed to neonatal hyperoxia. In this study, we assessed the contribution of cellular diversity in the male and female neonatal lung following injury. Our objective was to investigate sex and cell-type specific transcriptional changes that drive repair or persistent injury in the neonatal lung and delineate the alterations in the immune-endothelial cell communication networks using single cell RNA sequencing (sc-RNAseq) in a murine model of hyperoxic injury. We generated transcriptional profiles of >55,000 cells isolated from the lungs of postnatal day 1 (PND 1; pre-exposure), PND 7, and PND 21neonatal male and female C57BL/6 mice exposed to 95 % FiO2 between PND 1-5 (saccular stage of lung development). We show the presence of sex-based differences in the transcriptional states of lung endothelial and immune cells at PND 1 and PND 21. Furthermore, we demonstrate that biological sex significantly influences the response to injury, with a greater number of differentially expressed genes showing sex-specific patterns than those shared between male and female lungs. Pseudotime trajectory analysis highlighted genes needed for lung development that were altered by hyperoxia. Finally, we show intercellular communication between endothelial and immune cells at saccular and alveolar stages of lung development with sex-based biases in the crosstalk and identify novel ligand-receptor pairs. Our findings provide valuable insights into the cell diversity, transcriptional state, developmental trajectory, and cell-cell communication underlying neonatal lung injury, with implications for understanding lung development and possible therapeutic interventions while highlighting the crucial role of sex as a biological variable.
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Affiliation(s)
- Abiud Cantu
- Department of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | | | - Xiaoyu Dong
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Connor Leek
- Department of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Montserrat Anguera
- Department of Biomedical Sciences, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, USA
| | - Krithika Lingappan
- Department of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA, USA.
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9
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Cantu A, Gutierrez MC, Dong X, Leek C, Anguera M, Lingappan K. Modulation of Recovery from Neonatal Hyperoxic Lung Injury by Sex as a Biological Variable. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.09.552532. [PMID: 37609288 PMCID: PMC10441379 DOI: 10.1101/2023.08.09.552532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
Recovery from lung injury during the neonatal period requires the orchestration of many biological pathways. The modulation of such pathways can drive the developing lung towards proper repair or persistent maldevelopment that can lead to a disease phenotype. Sex as a biological variable can regulate these pathways differently in the male and female lung exposed to neonatal hyperoxia. In this study, we assessed the contribution of cellular diversity in the male and female neonatal lung following injury. Our objective was to investigate sex and cell-type specific transcriptional changes that drive repair or persistent injury in the neonatal lung and delineate the alterations in the immune-endothelial cell communication networks using single cell RNA sequencing (sc-RNAseq) in a murine model of hyperoxic injury. We generated transcriptional profiles of >55,000 cells isolated from the lungs of postnatal day 1 (PND 1) and postnatal day 21 (PND 21) neonatal male and female C57BL/6 mice exposed to 95% FiO 2 between PND 1-5 (saccular stage of lung development). We show the presence of sex-based differences in the transcriptional states of lung endothelial and immune cells at PND 1 and PND 21. Furthermore, we demonstrate that biological sex significantly influences the response to injury, with a greater number of differentially expressed genes showing sex-specific patterns than those shared between male and female lungs. Pseudotime trajectory analysis highlighted genes needed for lung development that were altered by hyperoxia. Finally, we show intercellular communication between endothelial and immune cells at saccular and alveolar stages of lung development with sex-based biases in the crosstalk and identify novel ligand-receptor pairs. Our findings provide valuable insights into the cell diversity, transcriptional state, developmental trajectory, and cell-cell communication underlying neonatal lung injury, with implications for understanding lung development and possible therapeutic interventions while highlighting the crucial role of sex as a biological variable.
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10
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Zhang Q, Huang Y, Gong C, Tang Y, Xiong J, Wang D, Liu X. Dexmedetomidine attenuates inflammation and organ injury partially by upregulating Nur77 in sepsis. Immun Inflamm Dis 2023; 11:e883. [PMID: 37382273 DOI: 10.1002/iid3.883] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 05/03/2023] [Accepted: 05/10/2023] [Indexed: 06/30/2023] Open
Abstract
PURPOSE The aim of this study was to investigate the effect of dexmedetomidine (Dex) on inflammation and organ injury in sepsis, as well as the potential relationship between Dex and nuclear receptor 77 (Nur77). METHODS We investigated the effects of dexmedetomidine on lipopolysaccharide (LPS)-induced inflammation in RAW264.7 cells and organ injury in the cecal ligation and puncture (CLP) mouse model. Additionally, we examined the relationship between dexmedetomidine and Nur77. The expression levels of Nur77 in RAW264.7 cells were analyzed under various types of stimulation using quantitative reverse transcription polymerase chain reaction and western blot analysis. Inflammatory cytokine levels in the cells were evaluated using enzyme-linked immunoassay. Organ injuries were assessed by examining tissue histology and pathology of the lung, liver, and kidney. RESULTS Dexmedetomidine increased the expression of Nur77 and IL-10, and downregulated inflammatory cytokines (IL-1β and TNF-α) in LPS-treated RAW264.7 cells. The effect of dexmedetomidine on inhibiting inflammation in LPS-treated RAW264.7 cells was promoted by overexpressing Nur77, while it was reversed by downregulating Nur77. Additionally, dexmedetomidine promoted the expression of Nur77 in the lung and CLP-induced pathological changes in the lung, liver, and kidney. Activation of Nur77 with the agonist Cytosporone B (CsnB) significantly suppressed the production of IL-1β and TNF-α in LPS-treated RAW264.7 cells. In contrast, knockdown of Nur77 augmented IL-1β and TNF-α production in LPS-treated RAW264.7 cells. CONCLUSION Dexmedetomidine can attenuate inflammation and organ injury, at least partially, via upregulating Nur77 in sepsis.
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Affiliation(s)
- Qian Zhang
- Department of Critical Care Medicine, Guizhou Medical University, Guiyang, Guizhou, People's Republic of China
| | - Yun Huang
- Department of Nephrology, First People's Hospital, Guiyang, Guizhou, People's Republic of China
| | - Chenchen Gong
- Department of Thoracic and Cardiovascular Surgery, The Children's Hospital of Zhejiang University School of Medicine, Zhejiang, People's Republic of China
| | - Yan Tang
- Department of Critical Care Medicine, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, People's Republic of China
| | - Jie Xiong
- Department of Hematology, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, People's Republic of China
| | - Difen Wang
- Department of Critical Care Medicine, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, People's Republic of China
| | - Xu Liu
- Department of Critical Care Medicine, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, People's Republic of China
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11
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Chen Z, Fan N, Shen G, Yang J. Silencing lncRNA CDKN2B-AS1 Alleviates Childhood Asthma Progression Through Inhibiting ZFP36 Promoter Methylation and Promoting NR4A1 Expression. Inflammation 2023; 46:700-717. [PMID: 36422840 DOI: 10.1007/s10753-022-01766-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 10/10/2022] [Accepted: 11/10/2022] [Indexed: 11/27/2022]
Abstract
LncRNA cyclin-dependent kinase inhibitor 2B antisense RNA 1 (CDKN2B-AS1) was found to be upregulated in plasma of patients with bronchial asthma. This study aimed to explore the roles and mechanisms of CDKN2B-AS1 in childhood asthma. We found that CDKN2B-AS1 was upregulated and zinc finger protein 36 (ZFP36) mRNA was downregulated in blood samples of children with asthma compared with healthy controls as measured by RT-qPCR. Human bronchial epithelial cell line BEAS-2B was treated with LPS to induce inflammation model. Small interfering RNA against CDKN2B-AS1 (si-CDKN2B-AS1) was transfected into LPS-treated BEAS-2B cells, and we observed that CDKN2B-AS1 silencing increased cell viability and inhibited apoptosis and inflammation cytokine levels in LPS-treated BEAS-2B cells. Methylation-specific PCR, ChIP, and RIP assays indicated that CDKN2B-AS1 inhibited ZFP36 expression by recruiting DNMT1 to promote ZFP36 promoter methylation. Co-immunoprecipitation (Co-IP) assay verified the interaction between ZFP36 and nuclear receptor subfamily 4 group A member 1 (NR4A1) proteins. Then rescue experiments revealed that ZFP36 knockdown reversed the effects of CDKN2B-AS1 silencing on BEAS-2B cell functions. ZFP36 overexpression facilitated apoptosis, inflammation, and p-p65 expression in BEAS-2B cells, while NR4A1 knockdown reversed these effects. Additionally, CDKN2B-AS1 silencing alleviated airway hyperresponsiveness and inflammation in ovalbumin (OVA)-induced asthma mice. In conclusion, silencing lncRNA CDKN2B-AS1 enhances BEAS-2B cell viability, reduces apoptosis and inflammation in vitro, and alleviated asthma symptoms in OVA-induced asthma mice in vivo through inhibiting ZFP36 promoter methylation and NR4A1-mediated NF-κB signaling pathway.
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Affiliation(s)
- Zhixin Chen
- Department of Pediatrics, Nanyang Central Hospital, No. 312, Gongnong Road, Henan Province, 473000, China.
| | - Nuandong Fan
- Department of Pathology, Nanyang Traditional Chinese Medicine Hospital, Henan Province, 473000, China
| | - Guangsheng Shen
- Department of Pediatrics, Nanyang Central Hospital, No. 312, Gongnong Road, Henan Province, 473000, China
| | - Jing Yang
- Department of Pediatrics, Nanyang Central Hospital, No. 312, Gongnong Road, Henan Province, 473000, China
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12
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Li Y, Wang SM, Li X, Lv CJ, Peng LY, Yu XF, Song YJ, Wang CJ. Pterostilbene pre-treatment reduces LPS-induced acute lung injury through activating NR4A1. PHARMACEUTICAL BIOLOGY 2022; 60:394-403. [PMID: 35271397 PMCID: PMC8920364 DOI: 10.1080/13880209.2022.2034893] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 01/05/2022] [Accepted: 01/22/2022] [Indexed: 06/14/2023]
Abstract
CONTEXT Pterostilbene (PTE), a common polyphenol compound, exerts an anti-inflammatory effect in many diseases, including acute lung injury (ALI). OBJECTIVE This study explores the potential mechanism of PTE pre-treatment against lipopolysaccharide (LPS)-induced ALI. MATERIALS AND METHODS Sixty Sprague-Dawley rats were divided into control, ALI, 10 mg/kg PTE + LPS, 20 mg/kg PTE + LPS, and 40 mg/kg PTE + LPS groups. At 24 h before LPS instillation, PTE was administered orally. At 2 h before LPS instillation, PTE was again administered orally. After 24 h of LPS treatment, the rats were euthanized. The levels of inflammatory cells and inflammatory factors in the bronchoalveolar lavage fluid (BALF), the expression of nuclear receptor subfamily 4 group A member 1 (NR4A1), and the nuclear factor (NF)-κB pathway-related protein levels were detected. NR4A1 agonist was used to further investigate the mechanism of PTE pre-treatment. RESULTS After PTE pre-treatment, the LPS induced inflammation was controlled and the survival rate was increased to 100% from 70% after LPS treatment 24 h. For lung injury score, it decreased to 1.5 from 3.5 after treating 40 mg/kg PTE. Compared with the control group, the expression of NR4A1 in the ALI group was decreased by 20-40%. However, the 40 mg/kg PTE pre-treatment increased the NR4A1 expression by 20-40% in the lung tissue. The results obtained with pre-treatment NR4A1 agonist were similar to those obtained by pre-treatment 40 mg/kg PTE. CONCLUSIONS PTE pre-treatment might represent an appropriate therapeutic target and strategy for preventing ALI induced by LPS.
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Affiliation(s)
- Ying Li
- Department of Emergency, Yantai Yuhuangding Hospital, Yantai, Shandong, China
| | - Shu-Min Wang
- Department of Emergency, Yantai Yuhuangding Hospital, Yantai, Shandong, China
| | - Xing Li
- Department of Station Intergrate Service, Yantai Central Blood, Yantai, Shandong, China
| | - Chang-Jun Lv
- Binzhou Medical University, Yantai, Shandong, China
| | - Ling-Yun Peng
- Department of Thoracic Surgery, Yantai Yuhuangding Hospital, Yantai, Shandong, China
| | - Xiao-Feng Yu
- Department of Thoracic Surgery, Yantai Yuhuangding Hospital, Yantai, Shandong, China
| | - Ying-Jian Song
- Department of Thoracic Surgery, Yantai Yuhuangding Hospital, Yantai, Shandong, China
| | - Cong-Jie Wang
- Pulmonary and Critical Care Medicine, Yantai Yuhuangding Hospital, Yantai, Shandong, China
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13
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Santos AL, Ionta M, Horvath RO, Soares MG, Silva DO, Kawafune ES, Ferreira MJP, Sartorelli P. Dereplication of Cytochalasans and Octaketides in Cytotoxic Extracts of Endophytic Fungi from Casearia arborea (Salicaceae). Metabolites 2022; 12:metabo12100903. [PMID: 36295805 PMCID: PMC9611219 DOI: 10.3390/metabo12100903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 09/15/2022] [Accepted: 09/16/2022] [Indexed: 11/16/2022] Open
Abstract
Endophytes have been shown to be a source of novel drug prototypes. The Casearia genus is known for presenting cytotoxic clerodane diterpenes; however, there are few reports on secondary metabolites produced by its fungal microbiota. Thus, in the present study endophytic fungi obtained from the fresh leaves of C. arborea were grown in potato dextrose broth and rice to perform a secondary metabolite prospection study. The cytotoxic profile of the crude extracts at 10 µg/mL was determined by a colorimetric assay on tumor cell lines. The endophytes producing cytotoxic extracts were identified through phylogenetic analysis and belong to Diaporthe and Colletotrichum species. Metabolites present in these extracts were organized in molecular networking format based on HRMS-MS, and a dereplication process was performed to target compounds for chromatographic purification. Metabolic classes, such as lipids, peptides, alkaloids, and polyketides were annotated, and octaketide and cytochalasin derivatives were investigated. Cytochalasin H was purified from the cytotoxic Diaporthe sp. CarGL8 extract and its cytotoxic activity was determined on human cancer cell lines A549, MCF-7, and HepG2. The data collected in the present study showed that molecular networking is useful to understand the chemical profile of complex matrices to target compounds, minimizing the cost and time spent in purification processes.
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Affiliation(s)
- Augusto L. Santos
- Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo, São Paulo 09972-270, Brazil
| | - Marisa Ionta
- Institute of Biomedical Science, Federal University of Alfenas, Minas Gerais 37130-000, Brazil
| | - Renato O. Horvath
- Institute of Biomedical Science, Federal University of Alfenas, Minas Gerais 37130-000, Brazil
| | - Marisi G. Soares
- Institute of Chemistry, Federal University of Alfenas, Minas Gerais 37130-000, Brazil
| | - Daniele O. Silva
- Institute of Chemistry, Federal University of Alfenas, Minas Gerais 37130-000, Brazil
| | - Eunizinis S. Kawafune
- Botany Department, Institute of Biosciences, University of São Paulo, São Paulo 05508-090, Brazil
| | - Marcelo J. P. Ferreira
- Botany Department, Institute of Biosciences, University of São Paulo, São Paulo 05508-090, Brazil
- Correspondence: (M.J.P.F.); (P.S.)
| | - Patricia Sartorelli
- Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo, São Paulo 09972-270, Brazil
- Correspondence: (M.J.P.F.); (P.S.)
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14
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Li Q, Li Y, Huang W, Wang X, Liu Z, Chen J, Fan Y, Peng T, Sadayappan S, Wang Y, Fan GC. Loss of Lipocalin 10 Exacerbates Diabetes-Induced Cardiomyopathy via Disruption of Nr4a1-Mediated Anti-Inflammatory Response in Macrophages. Front Immunol 2022; 13:930397. [PMID: 35757735 PMCID: PMC9226549 DOI: 10.3389/fimmu.2022.930397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 05/11/2022] [Indexed: 11/13/2022] Open
Abstract
Metabolic disorders (i.e., hyperglycemia, hyperlipidemia, and hyperinsulinemia) cause increased secretion of inflammatory cytokines/chemokines, leading to gradual loss of cardiac resident macrophage population and increased accumulation of inflammatory monocytes/macrophages in the heart. Such self-perpetuating effect may contribute to the development of cardiomyopathy during diabetes. Recent meta-analysis data reveal that lipocalin 10 (Lcn10) is significantly downregulated in cardiac tissue of patients with heart failure but is increased in the blood of septic patients. However, the functional role of Lcn10 in cardiac inflammation triggered by metabolic disorders has never been investigated. In this study, we demonstrate that the expression of Lcn10 in macrophages was significantly decreased under multiple metabolic stress conditions. Furthermore, Lcn10-null macrophages exhibited pro-inflammatory phenotype in response to inflammation stimuli. Next, using a global Lcn10-knockout (KO) mouse model to induce type-2 diabetes (T2D), we observed that loss of Lcn10 promoted more pro-inflammatory macrophage infiltration into the heart, compared to controls, leading to aggravated insulin resistance and impaired cardiac function. Similarly, adoptive transfer of Lcn10-KO bone marrow cells into X-ray irradiated mice displayed higher ratio of pro-/anti-inflammatory macrophages in the heart and worsened cardiac function than those mice received wild-type (WT) bone marrows upon T2D conditions. Mechanistically, RNA-sequencing analysis showed that Nr4a1, a nuclear receptor known to have potent anti-inflammatory effects, is involved in Lcn10-mediated macrophage activation. Indeed, we found that nuclear translocation of Nr4a1 was disrupted in Lcn10-KO macrophages upon stimulation with LPS + IFNγ. Accordingly, treatment with Cytosporone B (CsnB), an agonist of Nr4a1, attenuated the pro-inflammatory response in Lcn10-null macrophages and partially improved cardiac function in Lcn10-KO diabetic mice. Together, these findings indicate that loss of Lcn10 skews macrophage polarization to pro-inflammatory phenotype and aggravates cardiac dysfunction during type-2 diabetes through the disruption of Nr4a1-mediated anti-inflammatory signaling pathway in macrophages. Therefore, reduction of Lcn10 expression observed in diabetic macrophages may be responsible for the pathogenesis of diabetes-induced cardiac dysfunction. It suggests that Lcn10 might be a potential therapeutic factor for diabetic heart failure.
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Affiliation(s)
- Qianqian Li
- Division of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH, United States
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Yutian Li
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Wei Huang
- Department of Pathology and Laboratory Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Xiaohong Wang
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Zhenling Liu
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Jing Chen
- Division of Biomedical Informatics, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Yanbo Fan
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Tianqing Peng
- The Centre for Critical Illness Research, Lawson Health Research Institute, London, ON, Canada
| | - Sakthivel Sadayappan
- Division of Cardiovascular Health and Disease, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Yigang Wang
- Department of Pathology and Laboratory Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States
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15
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Ao M, Zhang J, Qian Y, Li B, Wang X, Chen J, Zhang Y, Cao Y, Qiu Y, Xu Y, Wu Z, Fang M. Design and synthesis of adamantyl-substituted flavonoid derivatives as anti-inflammatory Nur77 modulators: Compound B7 targets Nur77 and improves LPS-induced inflammation in vitro and in vivo. Bioorg Chem 2022; 120:105645. [PMID: 35121551 DOI: 10.1016/j.bioorg.2022.105645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 01/18/2022] [Accepted: 01/24/2022] [Indexed: 11/28/2022]
Abstract
In continuing our study on discovering new Nur77-targeting anti-inflammatory agents with natural skeletons, we combined adamantyl group and hydroxamic acid moiety with flavonoid nucleus, synthesized three series of flavonoid derivatives with a similar structure like CD437, and evaluated their activities against LPS-induced inflammation. Compound B7 was found to be an excellent Nur77 binder (Kd = 3.55 × 10-7 M) and a potent inhibitor of inflammation, which significantly decreased the production of cytokines in vitro, such as NO, IL-6, IL-1β, and TNF-α, at concentrations of 1.25, 2.5, and 5 μM. Mechanistically, B7 modulated the colocalization of Nur77 at mitochondria and inhibited the lipopolysaccharides (LPS)-induced inflammation via the blockade of NF-κB activation in a Nur77-dependent manner. Additionally, B7 showed in vivo anti-inflammatory activity in the LPS-induced mice model of acute lung injury (ALI). These data suggest that the Nur77-targeting flavonoid derivatives can be particularly useful for further pharmaceutical development for the treatment of inflammatory diseases such as ALI.
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Affiliation(s)
- Mingtao Ao
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences and School of Chemistry and Chemical Engineering, Xiamen University, South Xiang-An Road, Xiamen 361102, China; School of Pharmacy, Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Hubei University of Science and Technology, Xianning, Hubei 437100 China
| | - Jianyu Zhang
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences and School of Chemistry and Chemical Engineering, Xiamen University, South Xiang-An Road, Xiamen 361102, China; National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, China
| | - Yuqing Qian
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences and School of Chemistry and Chemical Engineering, Xiamen University, South Xiang-An Road, Xiamen 361102, China
| | - Boqun Li
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences and School of Chemistry and Chemical Engineering, Xiamen University, South Xiang-An Road, Xiamen 361102, China
| | - Xiumei Wang
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences and School of Chemistry and Chemical Engineering, Xiamen University, South Xiang-An Road, Xiamen 361102, China
| | - Jun Chen
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences and School of Chemistry and Chemical Engineering, Xiamen University, South Xiang-An Road, Xiamen 361102, China
| | - Yuxiang Zhang
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences and School of Chemistry and Chemical Engineering, Xiamen University, South Xiang-An Road, Xiamen 361102, China
| | - Yin Cao
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences and School of Chemistry and Chemical Engineering, Xiamen University, South Xiang-An Road, Xiamen 361102, China
| | - Yingkun Qiu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences and School of Chemistry and Chemical Engineering, Xiamen University, South Xiang-An Road, Xiamen 361102, China
| | - Yang Xu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences and School of Chemistry and Chemical Engineering, Xiamen University, South Xiang-An Road, Xiamen 361102, China.
| | - Zhen Wu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences and School of Chemistry and Chemical Engineering, Xiamen University, South Xiang-An Road, Xiamen 361102, China.
| | - Meijuan Fang
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences and School of Chemistry and Chemical Engineering, Xiamen University, South Xiang-An Road, Xiamen 361102, China.
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16
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Deng Z, Yang Z, Cui C, Wei H, Wang L, Tian D, Xiao F, Peng J. NR4A1 suppresses pyroptosis by transcriptionally inhibiting NLRP3 and IL-1β and co-localizing with NLRP3 in trans-Golgi to alleviate pathogenic bacteria-induced colitis. Clin Transl Med 2021; 11:e639. [PMID: 34923769 PMCID: PMC8684771 DOI: 10.1002/ctm2.639] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 10/06/2021] [Accepted: 10/24/2021] [Indexed: 11/08/2022] Open
Affiliation(s)
- Zhao Deng
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Zhipeng Yang
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Chenbin Cui
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Hongkui Wei
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Lijia Wang
- Department of Gastroenterology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, 430030, China
| | - Dean Tian
- Department of Gastroenterology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, 430030, China
| | - Fang Xiao
- Department of Gastroenterology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, 430030, China
| | - Jian Peng
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, P. R. China.,The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei, 430070, China
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17
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Piec PA, Pons V, Rivest S. Triggering Innate Immune Receptors as New Therapies in Alzheimer's Disease and Multiple Sclerosis. Cells 2021; 10:cells10082164. [PMID: 34440933 PMCID: PMC8393987 DOI: 10.3390/cells10082164] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 08/17/2021] [Accepted: 08/19/2021] [Indexed: 02/06/2023] Open
Abstract
Multiple sclerosis and Alzheimer's disease are two complex neurodegenerative diseases involving the immune system. So far, available treatments provide at best mild improvements to patients' conditions. For decades now, a new set of molecules have been used to modulate and regulate the innate immunity in these pathologies. Most studies have been carried out in rodents and some of them have reported tremendous beneficial effects on the disease course. The modulation of innate immune cells is of great interest since it provides new hope for patients. In this review, we will briefly overview the therapeutic potential of some molecules and receptors in multiple sclerosis and Alzheimer's disease and how they could be used to exploit new therapeutic avenues.
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18
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Nuclear receptor Nur77: its role in chronic inflammatory diseases. Essays Biochem 2021; 65:927-939. [PMID: 34328179 DOI: 10.1042/ebc20210004] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 07/12/2021] [Accepted: 07/15/2021] [Indexed: 12/12/2022]
Abstract
Nur77 is a nuclear receptor that has been implicated as a regulator of inflammatory disease. The expression of Nur77 increases upon stimulation of immune cells and is differentially expressed in chronically inflamed organs in human and experimental models. Furthermore, in a variety of animal models dedicated to study inflammatory diseases, changes in Nur77 expression alter disease outcome. The available studies comprise a wealth of information on the function of Nur77 in diverse cell types and tissues. Negative cross-talk of Nur77 with the NFκB signaling complex is an example of Nur77 effector function. An alternative mechanism of action has been established, involving Nur77-mediated modulation of metabolism in macrophages as well as in T cells. In this review, we summarize our current knowledge on the role of Nur77 in atherosclerosis, inflammatory bowel disease, multiple sclerosis, rheumatoid arthritis, and sepsis. Detailed insight in the control of inflammatory responses will be essential in order to advance Nur77-targeted therapeutic interventions in inflammatory disease.
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19
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Alharbi KS, Fuloria NK, Fuloria S, Rahman SB, Al-Malki WH, Javed Shaikh MA, Thangavelu L, Singh SK, Rama Raju Allam VS, Jha NK, Chellappan DK, Dua K, Gupta G. Nuclear factor-kappa B and its role in inflammatory lung disease. Chem Biol Interact 2021; 345:109568. [PMID: 34181887 DOI: 10.1016/j.cbi.2021.109568] [Citation(s) in RCA: 107] [Impact Index Per Article: 35.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 06/14/2021] [Accepted: 06/24/2021] [Indexed: 12/28/2022]
Abstract
Nuclear factor-kappa B, involved in inflammation, host immune response, cell adhesion, growth signals, cell proliferation, cell differentiation, and apoptosis defense, is a dimeric transcription factor. Inflammation is a key component of many common respiratory disorders, including asthma, chronic obstructive pulmonary disease (COPD), bronchiectasis, and acute respiratory distress syndrome. Many basic transcription factors are found in NF-κB signaling, which is a member of the Rel protein family. Five members of this family c-REL, NF-κB2 (p100/p52), RelA (p65), NF-κB1 (p105/p50), RelB, and RelA (p65) produce 5 transcriptionally active molecules. Proinflammatory cytokines, T lymphocyte, and B lymphocyte cell mitogens, lipopolysaccharides, bacteria, viral proteins, viruses, double-stranded RNA, oxidative stress, physical exertion, various chemotherapeutics are the stimulus responsible for NF-κB activation. NF-κB act as a principal component for several common respiratory illnesses, such as asthma, lung cancer, pulmonary fibrosis, COPD as well as infectious diseases like pneumonia, tuberculosis, COVID-19. Inflammatory lung disease, especially COVID-19, can make NF-κB a key target for drug production.
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Affiliation(s)
- Khalid Saad Alharbi
- Department of Pharmacology, College of Pharmacy, Jouf University, Sakaka, Al-Jouf, Saudi Arabia
| | | | | | - Sk Batin Rahman
- Bengal School of Technology, Churchura, Hooghly, West Bengal, India
| | - Waleed Hassan Al-Malki
- Department of Pharmacology, College of Pharmacy, Umm Al-Qura University, Makkah, Saudi Arabia
| | | | - Lakshmi Thangavelu
- Department of Pharmacology, Saveetha Dental College, Saveetha University, Chennai, India
| | - Sachin K Singh
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, 144411, India
| | - Venkata Sita Rama Raju Allam
- Department of Medical Biochemistry and Microbiology, Biomedical Centre (BMC), Uppsala University, Uppsala, Sweden
| | - Niraj Kumar Jha
- Department of Biotechnology, School of Engineering & Technology (SET), Sharda University, Plot No.32-34, Knowledge Park III, Greater Noida, 201310, Uttar Pradesh, India
| | - Dinesh Kumar Chellappan
- Department of Life Sciences, School of Pharmacy, International Medical University, Kuala Lumpur, 57000, Malaysia
| | - Kamal Dua
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, NSW, 2007, Australia.
| | - Gaurav Gupta
- School of Pharmacy, Suresh Gyan Vihar University, Jagatpura, 302017, Mahal Road, Jaipur, India.
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20
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Sommer N, Pak O, Hecker M. New Avenues for Anti-inflammatory Signaling of Nur77 in Acute Lung Injury. Am J Respir Cell Mol Biol 2021; 65:236-237. [PMID: 34086527 PMCID: PMC8485992 DOI: 10.1165/rcmb.2021-0210ed] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- Natascha Sommer
- Justus Liebig University, Excellence Cluster Cardiopulmonary System, University of Giessen and Marburg Lung Center (UGMLC), member of the German Center for Lung Research (DZL)., Giessen, Germany
| | - Oleg Pak
- Justus Liebig Universitat Giessen, 9175, Excellence Cluster Cardiopulmonary System University of Giessen and Marburg Lung Center (UGMLC), member of the German Center for Lung Research (DZL)., Giessen, Germany
| | - Matthias Hecker
- Justus Liebig University, Excellence Cluster Cardiopulmonary System, University of Giessen and Marburg Lung Center (UGMLC), member of the German Center for Lung Research (DZL)., Giessen, Germany;
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21
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Ding X, Zhao Z, Wu Y, Zhang H, Chen K, Luo C, Luo X, Xu H. Identification of novel anti-inflammatory Nur77 modulators by virtual screening. Bioorg Chem 2021; 112:104912. [PMID: 33933804 DOI: 10.1016/j.bioorg.2021.104912] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 03/19/2021] [Accepted: 04/07/2021] [Indexed: 11/27/2022]
Abstract
Orphan nuclear receptor Nur77 is a unique member of the NR4A nuclear receptor subfamily, which is critical for cellular processes especially the inflammatory responses. Many efforts have been made to discover novel scaffold small molecules targeting Nur77. Herein, we evaluated the previously reported binding sites in crystal structures of Nur77 with small molecules, and then discovered compound 13 as a hit of Nur77 via virtual screening targeting the best-scored binding site. Based on the results of fluorescence titration assay, structure-activity relationship (SAR) analysis was summarized for compound 13 and its analogs. Among these analogs, compound 13e displayed the most potent binding affinity (0.54 ± 0.02 μM). The binding mode of compound 13e was predicted via molecule docking. Moreover, 13e exhibited significant anti-inflammation activity in TNF-α induced HepG2 cell model. Taken together, these results provided a new insight into the understanding the functions of specific binding sites on Nur77 for small molecular compounds, and the development of new scaffold Nur77 modulators.
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Affiliation(s)
- Xiaoyu Ding
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China; University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China
| | - Zijie Zhao
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China; Shanghai Institute for Advanced Immunochemical Studies, and School of Life Science and Technology, ShanghaiTech University, Shanghai 200031, China; University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China
| | - Yue Wu
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China; University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China
| | - Hao Zhang
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Kaixian Chen
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China; Shanghai Institute for Advanced Immunochemical Studies, and School of Life Science and Technology, ShanghaiTech University, Shanghai 200031, China; University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China
| | - Cheng Luo
- School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310000, China; Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China; University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China.
| | - Xiaomin Luo
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China; University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China.
| | - Heng Xu
- School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310000, China; Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China.
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Regulatory Effects of Nur77 on Airway Remodeling and ASMC Proliferation in House Dust Mite-Induced Asthma. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020. [DOI: 10.1155/2020/4565246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Airway remodeling played a vital role in the development of asthma, and airway smooth muscle (ASM) mass was its hallmark. However, few strategies targeting ASM remodeling were developed in treating asthma. Nur77 was the transcription factor nuclear receptor involved in the pathogenesis of several lung diseases. Nur77 distribution and expression were determined in an HDM-mediated allergic asthma model. Its effect on airway hyperresponsiveness (AHR), chronic inflammation, and ASM remodeling in asthmatic mice was evaluated using a lentivirus-mediated shRNA. Possible mechanisms were explored by examining Nur77 actions and its underlying pathways in primary human AMC cells (ASMCs). In this study, we reported that Nur77 expression was mainly distributed along ASM and increased in lungs of HDM-challenged mice. Nur77 depletion by lentivirus-mediated shRNA ameliorated AHR, chronic inflammation, goblet cell hyperplasia, and airway remodeling in the asthmatic mouse model. By means of primary human ASMC, we discovered that Nur77 upregulation by HDM stimulation promoted cell proliferation and ROS production, as well as reduced antioxidant gene expression. These alterations might associate with MFN2/MAPK/AKT pathways. These findings broadened our understanding of airway remodeling and ASMC proliferation, which might provide a novel therapeutic target for asthma patients.
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Fang H, Zhang J, Ao M, He F, Chen W, Qian Y, Zhang Y, Xu Y, Fang M. Synthesis and discovery of ω-3 polyunsaturated fatty acid- alkanolamine (PUFA-AA) derivatives as anti-inflammatory agents targeting Nur77. Bioorg Chem 2020; 105:104456. [PMID: 33217634 DOI: 10.1016/j.bioorg.2020.104456] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 09/07/2020] [Accepted: 11/01/2020] [Indexed: 12/16/2022]
Abstract
In this work, three series of ω-3 polyunsaturated fatty acid-alkanolamine derivatives (PUFA-AAs) were synthesized, characterized and their anti-inflammatory activity in vivo was evaluated. Compounds 4a, 4f, and 4k exhibited marked anti-inflammatory activity in LPS-stimulated RAW 264.7 cells. The most promising compound 4k dose-dependently suppressed the cytokines with IC50 values in the low micromolar range. Further, 4k exhibited potential in vitro Nur77-binding affinity (Kd = 6.99 × 10-6 M) which is consistent with the result of docking studies. Next, the anti-inflammatory mechanism of 4k was found to be through NF-κB signal pathway in a Nur77-dependent manner. Moreover, we also observed 4k significantly inhibited LPS-induced expression of cytokines (IL-6, TNF-α, and IL-1β) through suppressing NF-κB activation and attenuated LPS-induced inflammation in mouse acute lung injury (ALI) model. In conclusion, the study strongly suggests that the PUFA-AA derivatives can be particularly as new Nur77 mediators for further treatment in inflammatory diseases.
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Affiliation(s)
- Hua Fang
- Third Institute of Oceanography, Ministry of Natural Resources, Technical Innovation Center for Utilization of Marine Biological Resources, Ministry of Natural Resources, Xiamen 361005, China
| | - Jianyu Zhang
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China
| | - Mingtao Ao
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China
| | - Fengming He
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China
| | - Weizhu Chen
- Third Institute of Oceanography, Ministry of Natural Resources, Technical Innovation Center for Utilization of Marine Biological Resources, Ministry of Natural Resources, Xiamen 361005, China
| | - Yuqing Qian
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China
| | - Yuxiang Zhang
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China
| | - Yang Xu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China.
| | - Meijuan Fang
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China.
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Deng Z, Zheng L, Xie X, Wei H, Peng J. GPA peptide enhances Nur77 expression in intestinal epithelial cells to exert a protective effect against DSS-induced colitis. FASEB J 2020; 34:15364-15378. [PMID: 32978839 DOI: 10.1096/fj.202000391rr] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 08/25/2020] [Accepted: 09/09/2020] [Indexed: 01/08/2023]
Abstract
Ulcerative colitis (UC) is a widespread inflammatory bowel disease that causes long-lasting inflammation and ulcers in the colon and rectum. In the inflamed tissue of patients with UC, the tight junctions are disrupted and large amounts of pro-inflammatory cytokines are produced, resulting in immune dysregulation. The expression of Nur77 is significantly reduced in the colon of inflammatory bowel disease, while Nur77 deficiency increases the susceptibility to DSS-induced colitis. Here, we report that Gly-Pro-Ala (GPA) peptide isolated from fish skin gelatin hydrolysate can significantly alleviate intestinal inflammation and damage caused by DSS-induced mice colitis. Besides maintaining the intestinal epithelial barrier, GPA alleviates intestinal inflammation and oxidative stress by inhibiting NF-κB activation. Interestingly, GPA binds to the ligand-binding domain of Nur77 and stimulates its autotranscriptional activity to enhance its expression in intestinal epithelial cells. Furthermore, GPA activates the promoter of IκBα to increase its expression, resulting in the abolishment of the NF-κB pathway. In contrast, the inhibitory effects of GPA on colitis are abolished in Nur77-/- mice. Our results suggest that as a Nur77 modulator, GPA may be applied to the prevention of intestinal inflammation.
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Affiliation(s)
- Zhao Deng
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, P.R. China
| | - Liufeng Zheng
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, P.R. China.,State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, People's Republic of China
| | - Xiaowei Xie
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, P.R. China
| | - Hongkui Wei
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, P.R. China.,The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
| | - Jian Peng
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, P.R. China.,The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
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25
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Deng Z, Liu Q, Wang M, Wei HK, Peng J. GPA Peptide-Induced Nur77 Localization at Mitochondria Inhibits Inflammation and Oxidative Stress through Activating Autophagy in the Intestine. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:4964202. [PMID: 32904539 PMCID: PMC7456482 DOI: 10.1155/2020/4964202] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 06/25/2020] [Accepted: 07/04/2020] [Indexed: 12/19/2022]
Abstract
Inflammatory bowel disease (IBD), including Crohn's disease (CD) and ulcerative colitis (UC), is a chronic inflammatory disease affecting the colon, and its incidence is rising worldwide. Nur77, belongs to the NR4A subfamily of nuclear hormone receptors, plays a critical role in controlling the pathology of colitis. The aim of this study is to investigate the protection effect and mechanism of Gly-Pro-Ala (GPA) peptide, isolated from fish skin gelatin hydrolysate, in a mouse model of dextran sulfate sodium- (DSS-) induced colitis and intestinal epithelial cells (IECs) stimulated by lipopolysaccharide (LPS). In vivo, GPA treatment alleviates DSS-induced weight loss, disease activity index (DAI) increase, colon length shortening, and colonic pathological damage. Production of proinflammatory cytokines, ROS, and MDA is significantly decreased by GPA treatment. In vitro, GPA significantly inhibits proinflammatory cytokine production, cytotoxicity, ROS, and MDA in IECs. Furthermore, GPA induces autophagy to suppress inflammation and oxidative stress. GPA promotes Nur77 translocation from the nucleus to mitochondria where it facilitates Nur77 interaction with TRAF6 and p62, leading to the induction of autophagy. In addition, GPA contributed to the maintenance of tight junction architecture in vivo and in vitro. Taken together, GPA, as a Nur77 modulator, could exert anti-inflammatory and antioxidant effects by inducing autophagy in IECs, suggesting that GPA may be promising for the prevention of colitis.
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Affiliation(s)
- Zhao Deng
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, 430070 Wuhan, China
| | - Qi Liu
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, 430070 Wuhan, China
| | - Miaomiao Wang
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, 430070 Wuhan, China
| | - Hong-Kui Wei
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, 430070 Wuhan, China
- The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070 Hubei, China
| | - Jian Peng
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, 430070 Wuhan, China
- The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070 Hubei, China
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26
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Molecular, chemical, and structural characterization of prostaglandin A2 as a novel agonist for Nur77. Biochem J 2020; 476:2757-2767. [PMID: 31492735 DOI: 10.1042/bcj20190253] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 09/04/2019] [Accepted: 09/06/2019] [Indexed: 12/15/2022]
Abstract
Nur77 is a transcription factor belonging to the NR4A subfamily of nuclear hormone receptors. Upon induction, Nur77 modulates the expression of its target genes and controls a variety of biological and pathophysiological processes. Prior research that revealed a structurally atypical ligand-binding domain (LBD) and failed to locate an endogenous ligand had led to a classification of Nur77 as an orphan receptor. However, several more recent studies indicate that small synthetic molecules and unsaturated fatty acids can bind to Nur77. Discovery of additional endogenous ligands will facilitate our understanding of the receptor's functions and regulatory mechanisms. Our data have identified prostaglandin A2 (PGA2), a cyclopentenone prostaglandin (PG), as such a ligand. Cyclopentenone PGs exert their biological effects primarily by forming protein adducts via the characteristic electrophilic β-carbon(s) located in their cyclopentenone rings. Our data show that PGA2 induces Nur77 transcriptional activity by forming a covalent adduct between its endocyclic β-carbon, C9, and Cys566 in the receptor's LBD. The importance of this endocyclic β-carbon was substantiated by the failure of PGs without such electrophilic properties to react with Nur77. Calculated chemical properties and data from reactive molecular dynamic simulations, intrinsic reaction co-ordinate modeling, and covalent molecular docking also corroborate the selectivity of PGA2's C9 β-carbon towards Nur77's Cys. In summary, our molecular, chemical, and structural characterization of the PGA2-Nur77 interaction provides the first evidence that PGA2 is an endogenous Nur77 agonist.
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Nuclear Receptors as Regulators of Pituitary Corticotroph Pro-Opiomelanocortin Transcription. Cells 2020; 9:cells9040900. [PMID: 32272677 PMCID: PMC7226830 DOI: 10.3390/cells9040900] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 03/29/2020] [Accepted: 04/01/2020] [Indexed: 12/16/2022] Open
Abstract
The hypothalamic–pituitary–adrenal (HPA) axis plays a critical role in adaptive stress responses and maintaining organism homeostasis. The pituitary corticotroph is the central player in the HPA axis and is regulated by a plethora of hormonal and stress related factors that synergistically interact to activate and temper pro-opiomelanocortin (POMC) transcription, to either increase or decrease adrenocorticotropic hormone (ACTH) production and secretion as needed. Nuclear receptors are a family of highly conserved transcription factors that can also be induced by various physiologic signals, and they mediate their responses via multiple targets to regulate metabolism and homeostasis. In this review, we summarize the modulatory roles of nuclear receptors on pituitary corticotroph cell POMC transcription, describe the unique and complex role these factors play in hypothalamic–pituitary–adrenal axis (HPA) regulation and discuss potential therapeutic targets in disease states.
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28
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Reddy AT, Lakshmi SP, Banno A, Jadhav SK, Pulikkal Kadamberi I, Kim SC, Reddy RC. Cigarette smoke downregulates Nur77 to exacerbate inflammation in chronic obstructive pulmonary disease (COPD). PLoS One 2020; 15:e0229256. [PMID: 32084204 PMCID: PMC7034866 DOI: 10.1371/journal.pone.0229256] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 02/03/2020] [Indexed: 02/07/2023] Open
Abstract
Cigarette smoke (CS) contains multiple gaseous and particulate materials that can cause lung inflammation, and smoking is the major cause of chronic obstructive pulmonary disease (COPD). We sought to determine the mechanisms of how CS triggers lung inflammation. Nur77, a nuclear hormone receptor belonging to the immediate-early response gene family, controls inflammatory responses, mainly by suppressing the NF-κB signaling pathway. Because it is unknown if Nur77's anti-inflammatory role modulates COPD, we assessed if and how Nur77 expression and activity are altered in CS-induced airway inflammation. In lung tissues and bronchial epithelial cells from COPD patients, we found Nur77 was downregulated. In a murine model of CS-induced airway inflammation, CS promoted lung inflammation and also reduced Nur77 activity in wild type (WT) mice, whereas lungs of Nur77-deficient mice showed exaggerated CS-induced inflammatory responses. Our findings in in vitro studies of human airway epithelial cells complemented those in vivo data in mice, together showing that CS induced threonine-phosphorylation of Nur77, which is known to interfere with its anti-inflammatory functions. In summary, our findings point to Nur77 as an important regulator of CS-induced inflammatory responses and support the potential benefits of Nur77 activation for COPD treatment.
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Affiliation(s)
- Aravind T. Reddy
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
- Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, Pennsylvania, United States of America
| | - Sowmya P. Lakshmi
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
- Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, Pennsylvania, United States of America
| | - Asoka Banno
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - Shantanu Krishna Jadhav
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
- Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, Pennsylvania, United States of America
| | - Ishaque Pulikkal Kadamberi
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
- Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, Pennsylvania, United States of America
| | - Seong C. Kim
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
- Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, Pennsylvania, United States of America
| | - Raju C. Reddy
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
- Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, Pennsylvania, United States of America
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Chiarelli N, Ritelli M, Zoppi N, Colombi M. Cellular and Molecular Mechanisms in the Pathogenesis of Classical, Vascular, and Hypermobile Ehlers‒Danlos Syndromes. Genes (Basel) 2019; 10:E609. [PMID: 31409039 PMCID: PMC6723307 DOI: 10.3390/genes10080609] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 07/30/2019] [Accepted: 08/09/2019] [Indexed: 12/12/2022] Open
Abstract
The Ehlers‒Danlos syndromes (EDS) constitute a heterogenous group of connective tissue disorders characterized by joint hypermobility, skin abnormalities, and vascular fragility. The latest nosology recognizes 13 types caused by pathogenic variants in genes encoding collagens and other molecules involved in collagen processing and extracellular matrix (ECM) biology. Classical (cEDS), vascular (vEDS), and hypermobile (hEDS) EDS are the most frequent types. cEDS and vEDS are caused respectively by defects in collagen V and collagen III, whereas the molecular basis of hEDS is unknown. For these disorders, the molecular pathology remains poorly studied. Herein, we review, expand, and compare our previous transcriptome and protein studies on dermal fibroblasts from cEDS, vEDS, and hEDS patients, offering insights and perspectives in their molecular mechanisms. These cells, though sharing a pathological ECM remodeling, show differences in the underlying pathomechanisms. In cEDS and vEDS fibroblasts, key processes such as collagen biosynthesis/processing, protein folding quality control, endoplasmic reticulum homeostasis, autophagy, and wound healing are perturbed. In hEDS cells, gene expression changes related to cell-matrix interactions, inflammatory/pain responses, and acquisition of an in vitro pro-inflammatory myofibroblast-like phenotype may contribute to the complex pathogenesis of the disorder. Finally, emerging findings from miRNA profiling of hEDS fibroblasts are discussed to add some novel biological aspects about hEDS etiopathogenesis.
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Affiliation(s)
- Nicola Chiarelli
- Division of Biology and Genetics, Department of Molecular and Translational Medicine, University of Brescia, 25121 Brescia, Italy
| | - Marco Ritelli
- Division of Biology and Genetics, Department of Molecular and Translational Medicine, University of Brescia, 25121 Brescia, Italy
| | - Nicoletta Zoppi
- Division of Biology and Genetics, Department of Molecular and Translational Medicine, University of Brescia, 25121 Brescia, Italy
| | - Marina Colombi
- Division of Biology and Genetics, Department of Molecular and Translational Medicine, University of Brescia, 25121 Brescia, Italy.
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