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Wang X, Zhao B, Ruan Y, Xu W, Luo Z, Xu J, Shi C, Shan J. Fagopyrum Dibotrys Rhizoma regulates pulmonary lipid metabolic homeostasis and the ERK-cPLA 2 pathway to alleviate asthma in mice. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 131:155782. [PMID: 38851102 DOI: 10.1016/j.phymed.2024.155782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 03/04/2024] [Accepted: 05/26/2024] [Indexed: 06/10/2024]
Abstract
BACKGROUND Asthma is a complex disease with mechanisms involving multiple factors, and there is still a lack of highly effective and low-side-effect drugs. Traditional Chinese medicine Fagopyrum Dibotrys Rhizoma (FDR) has been applied for the treatment of acute and chronic bronchitis as well as bronchial asthma due to its favorable pharmacological activity. However, the exact mechanism of FDR remains unclear. OBJECTIVE A mouse model of asthma was created using OVA and HDM. To investigate the mechanism of FDR in asthma treatment, a combination of network pharmacology, lipidomics, and molecular biology approaches was employed. METHODS To evaluate the therapeutic effects of FDR on asthma, we established two distinct models of asthma in C57BL/6 J mice using OVA and HDM, respectively. We then employed LC-MS to analyze the major chemical constituents in FDR. Next, the network pharmacology approach was used to predict the potential targets and mechanisms of FDR in asthma treatment. Additionally, lipidomics analysis of mouse serum was conducted using LC-MS. Finally, the impact of FDR on the ERK -cPLA2 signaling pathway was investigated through Western Blotting assay. RESULTS FDR treatment has been shown to improve histomorphological changes, lung function and inflammation in models of OVA and HDM-induced asthma. Using UPLC/LTQ-Orbitrap-MS, we were able to identify 12 potential active components. Network pharmacology analysis revealed that FDR shares 75 targets with asthma. Further analysis using GO and KEGG pathways demonstrated the involvement of key pathways such as PI3K-Akt, TNF, and MAPK. Additionally, lipidomics analysis of the serum from OVA and HDM induced asthma mice showed disturbances in lipid metabolism, which were effectively ameliorated by FDR treatment. Mechanistically, FDR inhibits ERK1/2-cPLA2, leading to a reduction in lysophospholipids and restoration of lipid balance, thereby aiding in the treatment of asthma. CONCLUSION FDR has been shown to improve lipid metabolism disorder in the serum of asthmatic mice, thereby potentially serving as a treatment for asthma. This can be achieved by regulating the activation levels of ERK1/2 and p38MAPK. Consequently, the production of lysophosphatide is reduced, thereby alleviating the disorder of lipid metabolism and achieving the desired therapeutic effect in asthma treatment.
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Affiliation(s)
- Xuan Wang
- Jiangsu Key Laboratory of Children's Health and Chinese Medicine, Institute of Pediatrics, Nanjing University of Chinese Medicine, Nanjing, 210023, China; Medical Metabolomics Center, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Binshu Zhao
- Jiangsu Key Laboratory of Children's Health and Chinese Medicine, Institute of Pediatrics, Nanjing University of Chinese Medicine, Nanjing, 210023, China; Medical Metabolomics Center, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Yuyuan Ruan
- Jiangsu Key Laboratory of Children's Health and Chinese Medicine, Institute of Pediatrics, Nanjing University of Chinese Medicine, Nanjing, 210023, China; Medical Metabolomics Center, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Weichen Xu
- Jiangsu Key Laboratory of Children's Health and Chinese Medicine, Institute of Pediatrics, Nanjing University of Chinese Medicine, Nanjing, 210023, China; Medical Metabolomics Center, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Zichen Luo
- Jiangsu Key Laboratory of Children's Health and Chinese Medicine, Institute of Pediatrics, Nanjing University of Chinese Medicine, Nanjing, 210023, China; Medical Metabolomics Center, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Jianya Xu
- Medical Metabolomics Center, Nanjing University of Chinese Medicine, Nanjing, 210023, China; School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Chen Shi
- Medical Metabolomics Center, Nanjing University of Chinese Medicine, Nanjing, 210023, China; School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China.
| | - Jinjun Shan
- Jiangsu Key Laboratory of Children's Health and Chinese Medicine, Institute of Pediatrics, Nanjing University of Chinese Medicine, Nanjing, 210023, China; Medical Metabolomics Center, Nanjing University of Chinese Medicine, Nanjing, 210023, China.
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Yee M, McDavid AN, Cohen ED, Huyck HL, Poole C, Altman BJ, Maniscalco WM, Deutsch GH, Pryhuber GS, O’Reilly MA. Neonatal Hyperoxia Activates Activating Transcription Factor 4 to Stimulate Folate Metabolism and Alveolar Epithelial Type 2 Cell Proliferation. Am J Respir Cell Mol Biol 2022; 66:402-414. [PMID: 35045271 PMCID: PMC8990118 DOI: 10.1165/rcmb.2021-0363oc] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 01/18/2022] [Indexed: 11/24/2022] Open
Abstract
Oxygen supplementation in preterm infants disrupts alveolar epithelial type 2 (AT2) cell proliferation through poorly understood mechanisms. Here, newborn mice are used to understand how hyperoxia stimulates an early aberrant wave of AT2 cell proliferation that occurs between Postnatal Days (PNDs) 0 and 4. RNA-sequencing analysis of AT2 cells isolated from PND4 mice revealed hyperoxia stimulates expression of mitochondrial-specific methylenetetrahydrofolate dehydrogenase 2 and other genes involved in mitochondrial one-carbon coupled folate metabolism and serine synthesis. The same genes are induced when AT2 cells normally proliferate on PND7 and when they proliferate in response to the mitogen fibroblast growth factor 7. However, hyperoxia selectively stimulated their expression via the stress-responsive activating transcription factor 4 (ATF4). Administration of the mitochondrial superoxide scavenger mitoTEMPO during hyperoxia suppressed ATF4 and thus early AT2 cell proliferation, but it had no effect on normative AT2 cell proliferation seen on PND7. Because ATF4 and methylenetetrahydrofolate dehydrogenase are detected in hyperplastic AT2 cells of preterm infant humans and baboons with bronchopulmonary dysplasia, dampening mitochondrial oxidative stress and ATF4 activation may provide new opportunities for controlling excess AT2 cell proliferation in neonatal lung disease.
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Affiliation(s)
| | | | | | | | | | - Brian J. Altman
- Department of Biomedical Genetics, School of Medicine and Dentistry, University of Rochester, Rochester, New York; and
| | | | - Gail H. Deutsch
- Department of Pathology, Seattle Children’s Hospital, University of Washington, Seattle, Washington
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