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Long L, Dai X, Yao T, Zhang X, Jiang G, Cheng X, Jiang M, He Y, Peng Z, Hu G, Tao L, Meng J. Mefunidone alleviates silica-induced inflammation and fibrosis by inhibiting the TLR4-NF-κB/MAPK pathway and attenuating pyroptosis in murine macrophages. Biomed Pharmacother 2024; 178:117216. [PMID: 39096618 DOI: 10.1016/j.biopha.2024.117216] [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: 05/21/2024] [Revised: 07/17/2024] [Accepted: 07/26/2024] [Indexed: 08/05/2024] Open
Abstract
AIMS Silicosis is the most common and severe type of pneumoconiosis, imposing a substantial disease burden and economic loss on patients and society. The pathogenesis and key targets of silicosis are not yet clear, and there are currently no effective treatments available. Therefore, we conducted research on mefunidone (MFD), a novel antifibrotic drug, to explore its efficacy and mechanism of action in murine silicosis. METHODS Acute 7-day and chronic 28-day silicosis models were constructed in C57BL/6J mice by the intratracheal instillation of silica and subsequently treated with MFD to assess its therapeutic potential. The effects of MFD on silica-induced inflammation, pyroptosis, and fibrosis were further investigated using immortalized mouse bone marrow-derived macrophages (iBMDMs). RESULTS In the 7-day silica-exposed mouse models, MFD treatment significantly alleviated pulmonary inflammation and notably reduced macrophage infiltration into the lung tissue. RNA-sequencing analysis of silica-induced iBMDMs followed by gene set enrichment analysis revealed that MFD profoundly influenced cytokine-cytokine receptor interactions, chemokine signaling, and the toll-like receptor signaling pathways. MFD treatment also markedly reduced the secretion of inflammatory cytokines and chemokines from silica-exposed iBMDMs. Moreover, MFD effectively downregulated the activation of the TLR4-NF-κB/MAPK signaling pathway induced by silica and mitigated the upregulation of pyroptosis markers. Additionally, MFD treatment significantly suppressed the activation of fibroblasts and alveolar epithelial cells co-cultured with silica-exposed mouse macrophages. Ultimately, in the 28-day silica-exposed mouse models, MFD administration led to a substantial reduction in the severity of pulmonary fibrosis. CONCLUSION MFD mitigates silica-induced pulmonary inflammation and fibrosis in mice by suppressing the TLR4-NF-κB/MAPK signaling pathway and reducing pyroptotic responses in macrophages. MFD could potentially emerge as a novel therapeutic agent for the treatment of silicosis.
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Affiliation(s)
- Lingzhi Long
- Department of Pulmonary and Critical Care Medicine, Third Xiangya Hospital, Central South University, Changsha 410013, China; Hunan Key Laboratory of Organ Fibrosis, Central South University, Changsha 410008, China
| | - Xiaoqing Dai
- Department of Pulmonary and Critical Care Medicine, Third Xiangya Hospital, Central South University, Changsha 410013, China; Hunan Key Laboratory of Organ Fibrosis, Central South University, Changsha 410008, China
| | - Tingting Yao
- Department of Pulmonary and Critical Care Medicine, Third Xiangya Hospital, Central South University, Changsha 410013, China; Hunan Key Laboratory of Organ Fibrosis, Central South University, Changsha 410008, China
| | - Xiangyu Zhang
- Department of Pulmonary and Critical Care Medicine, Third Xiangya Hospital, Central South University, Changsha 410013, China; Hunan Key Laboratory of Organ Fibrosis, Central South University, Changsha 410008, China
| | - Guoliang Jiang
- Department of Pulmonary and Critical Care Medicine, Third Xiangya Hospital, Central South University, Changsha 410013, China; Hunan Key Laboratory of Organ Fibrosis, Central South University, Changsha 410008, China
| | - Xiaoyun Cheng
- Department of Pulmonary and Critical Care Medicine, Third Xiangya Hospital, Central South University, Changsha 410013, China; Hunan Key Laboratory of Organ Fibrosis, Central South University, Changsha 410008, China
| | - Mao Jiang
- Department of Pulmonary and Critical Care Medicine, Third Xiangya Hospital, Central South University, Changsha 410013, China; Hunan Key Laboratory of Organ Fibrosis, Central South University, Changsha 410008, China
| | - Yijun He
- Department of Pulmonary and Critical Care Medicine, Third Xiangya Hospital, Central South University, Changsha 410013, China; Hunan Key Laboratory of Organ Fibrosis, Central South University, Changsha 410008, China
| | - Zhangzhe Peng
- Hunan Key Laboratory of Organ Fibrosis, Central South University, Changsha 410008, China; Department of Nephrology, Xiangya Hospital, Central South University, Changsha 410008, China; National International Collaborative Research Center for Medical Metabolomics, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Gaoyun Hu
- Hunan Key Laboratory of Organ Fibrosis, Central South University, Changsha 410008, China; Department of Medicinal Chemistry, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China
| | - Lijian Tao
- Hunan Key Laboratory of Organ Fibrosis, Central South University, Changsha 410008, China; Department of Nephrology, Xiangya Hospital, Central South University, Changsha 410008, China; National International Collaborative Research Center for Medical Metabolomics, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Jie Meng
- Department of Pulmonary and Critical Care Medicine, Third Xiangya Hospital, Central South University, Changsha 410013, China; Hunan Key Laboratory of Organ Fibrosis, Central South University, Changsha 410008, China; National International Collaborative Research Center for Medical Metabolomics, Xiangya Hospital, Central South University, Changsha 410008, China.
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Ni YL, Shen HT, Ng YY, Chen SP, Lee SS, Tseng CC, Ho YC, Kuan YH. Hibifolin protected pro-inflammatory response and oxidative stress in LPS-induced acute lung injury through antioxidative enzymes and the AMPK2/Nrf-2 pathway. ENVIRONMENTAL TOXICOLOGY 2024; 39:3799-3807. [PMID: 38511873 DOI: 10.1002/tox.24233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 02/29/2024] [Accepted: 03/07/2024] [Indexed: 03/22/2024]
Abstract
ALI is a grave medical ailment that manifests as abrupt inflammation of the lungs and diminished oxygen levels. It poses a considerable challenge to the medical fraternity, with elevated rates of morbidity and mortality. Our research endeavors to investigate the potential of hibifolin, a flavonoid glucuronide, imbued with potent antioxidant properties, and its molecular mechanism to combat LPS-induced ALI in mice. The study utilized ICR mice to create an ALI model induced by LPS. Prior to LPS administration, hibifolin was given at 10, 30, or 50 mg/kg, or dexamethasone was given at 1 mg/kg to assess its preventative impact. Changes in lung tissue, pulmonary edema, and lipid peroxidation were analyzed using H&E stain assay, lung wet/dry ratio assay, and MDA formation assay, respectively. Activity assay kits were used to measure MPO activity and antioxidative enzymes (SOD, CAT, GPx) activity in the lungs. Western blot assay was used to determine the phosphorylation of Nrf-2 and AMPK2 in the lungs. Hibifolin demonstrated a concentration-dependent improvement in LPS-induced histopathologic pulmonary changes. This treatment notably mitigated pulmonary edema, lipid peroxidation, and MPO activity in ALI mice. Additionally, hibifolin successfully restored antioxidative enzyme activity in the lungs of ALI mice. Moreover, hibifolin effectively promoted Nrf-2 phosphorylation and reinstated AMPK2 phosphorylation in the lungs of ALI mice. The results indicate that hibifolin could effectively alleviate the pathophysiological impact of LPS-induced ALI. This is likely due to its antioxidative properties, which help to restore antioxidative enzyme activity and activate the AMPK2/Nrf2 pathway. These findings are valuable in terms of enhancing our knowledge of ALI treatment and pave the way for further investigation into hibifolin as a potential therapeutic option for lung injuries.
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Affiliation(s)
- Yung-Lun Ni
- Department of Pulmonary Medicine, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung, Taiwan
| | - Huan-Ting Shen
- Department of Pulmonary Medicine, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung, Taiwan
| | - Yan-Yan Ng
- Department of Pediatric, Chung Kang branch, Cheng Ching Hospital, Taichung, Taiwan
| | - Shih-Pin Chen
- Department of Internal Medicine, School of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Internal Medicine, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Shiuan-Shinn Lee
- Department of Public Health, College of health care and management, Chung Shan Medical University, Taichung, Taiwan
| | - Ching-Chi Tseng
- Department of Dermatology, The First Affiliated Hospital of Jinan University, Guangzhou, China
- Department of Dermatology, Shiso Municipal Hospital, Shiso, Hyogo, Japan
| | - Yung-Chuan Ho
- Center for General Education, Chung Shan Medical University, Taichung, Taiwan
| | - Yu-Hsiang Kuan
- Department of Pharmacology, School of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Pharmacy, Chung Shan Medical University Hospital, Taichung, Taiwan
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Han X, Ding W, Qu G, Li Y, Wang P, Yu J, Liu M, Chen X, Xie S, Feng J, Xu S. Danshensu methyl ester attenuated LPS-induced acute lung injury by inhibiting TLR4/NF-κB pathway. Respir Physiol Neurobiol 2024; 322:104219. [PMID: 38242336 DOI: 10.1016/j.resp.2024.104219] [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: 11/21/2023] [Revised: 01/14/2024] [Accepted: 01/14/2024] [Indexed: 01/21/2024]
Abstract
Acute Lung Injury (ALI) manifests as an acute exacerbation of pulmonary inflammation with high mortality. The potential application of Danshensu methyl ester (DME, synthesized in our lab) in ameliorating ALI has not been elucidated. Our results demonstrated that DME led to a remarkable reduction in lung injury. DME promoted a marked increase in antioxidant enzymes, like superoxide dismutase (SOD), and glutathione (GSH), accompanied by a substantial decrease in reactive oxygen species (ROS), myeloperoxidase (MPO), and malondialdehyde (MDA). Moreover, DME decreased the production of IL-1β, TNF-α and IL-6, in vitro and in vivo. TLR4 and MyD88 expression is reduced in the DME-treated cells or tissues, which further leading to a decrease of p-p65 and p-IκBα. Meanwhile, DME effectively facilitated an elevation in cytoplasmic p65 expression. In summary, DME could ameliorate ALI by its antioxidant functionality and anti-inflammation effects through TLR4/NF-κB, which implied that DME may be a viable medicine for lung injury.
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Affiliation(s)
- Xuejia Han
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, Yantai, PR China; Department of Laboratory Medicine, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, PR China
| | - Wensi Ding
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, Yantai, PR China; Department of Laboratory Medicine, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, PR China
| | - Guiwu Qu
- School of Gerontology, Binzhou Medical University, Yantai, PR China
| | - Youjie Li
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, Yantai, PR China
| | - Pingyu Wang
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, Yantai, PR China
| | - Jiahui Yu
- Binzhou Medical University, Yantai, PR China
| | - Mingyue Liu
- Binzhou Medical University, Yantai, PR China
| | - Xiulan Chen
- Binzhou Medical University, Yantai, PR China
| | - Shuyang Xie
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, Yantai, PR China; Shandong Laboratory of Advanced Materials and Green Manufacturing, Yantai, Shandong, PR China.
| | - Jiankai Feng
- Department of Laboratory Medicine, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, PR China.
| | - Sen Xu
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, Yantai, PR China.
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Piao XM, Feng MF, Zhao WP, Wu ZH, Zhang WW, Hou HM, Wang JH, Wang LB, Huang J, Zhang Y. Dendrocandin U from Dendrobium officinale Kimura et Migo Inhibits M1 Polarization in Alveolar Macrophage by Suppressing NF-κB Signaling Pathway. Chem Biodivers 2023; 20:e202300999. [PMID: 37933979 DOI: 10.1002/cbdv.202300999] [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: 07/10/2023] [Accepted: 10/09/2023] [Indexed: 11/08/2023]
Abstract
Dendrobium officinale Kimura et Migo is a valuable and homologous medicine and food traditional Chinese medicine. Currently there are few studies on the anti-inflammatory activity of lipophilic components. The aim of this study was to explore the anti-inflammatory effect and mechanism of the lipophilic compounds in Dendrobium officinale. Six compounds were isolated and identified, including three bibenzyl compounds, dendrocandin U, dendronbibisline B, erianin, and three lignans, (-)-syringaresinol, (+)-syringaresinol-O-β-D-glucopyranoside, 5-methoxy-(+)-isolariciresinol. Among them, dendronbibisline B and 5-methoxy-(+)-isolariciresinol were isolated from Dendrobium officinale for the first time. Besides, we found dendrocandin U, dendronbibisline B and (-)-syringaresinol exhibited the anti-inflammation to inhibit nitric oxide secretion induced by lipopolysaccharide (LPS)/interferon (IFN-γ) in MH-S cells. Furthermore, dendrocandin U could inhibit the expression of tumor necrosis factor-α (TNF-α), Cluster of Differentiation 86 (CD86), and reduce inflammatory morphological changes of macrophages. Meanwhile, we confirmed that the anti-inflammation mechanism of dendrocandin U was to inhibit M1 polarization by suppressing toll-like receptor 4 (TLR4)/recombinant myeloid differentiation factor 88 (MyD88)/nuclear factor kappa B (NF-κB) signaling pathway. In this paper, dendrocandin U with significant anti-inflammatory activity was found from Dendrobium officinale, which could provide a basis for the study of its anti-inflammatory drugs.
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Affiliation(s)
- Xian-Mei Piao
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, P. R. China
| | - Ming-Feng Feng
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, P. R. China
| | - Wei-Ping Zhao
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, P. R. China
| | - Zhi-Hang Wu
- Department of Medicinal Chemistry and Natural Medicinal Chemistry, College of Pharmacy, Harbin Medical University, Harbin, 150081, P. R. China
| | - Wen-Wen Zhang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, P. R. China
| | - Hui-Min Hou
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, P. R. China
| | - Jin-Hui Wang
- Department of Medicinal Chemistry and Natural Medicinal Chemistry, College of Pharmacy, Harbin Medical University, Harbin, 150081, P. R. China
| | - Li-Bo Wang
- Department of Medicinal Chemistry and Natural Medicinal Chemistry, College of Pharmacy, Harbin Medical University, Harbin, 150081, P. R. China
| | - Jian Huang
- Department of Medicinal Chemistry and Natural Medicinal Chemistry, College of Pharmacy, Harbin Medical University, Harbin, 150081, P. R. China
| | - Yan Zhang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, P. R. China
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