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Wang WH, Li CR, Qin XJ, Yang XQ, Xie SD, Jiang Q, Zou LH, Zhang YJ, Zhu GL, Zhao P. Novel Alkaloids from Aspergillus fumigatus VDL36, an Endophytic Fungus Associated with Vaccinium dunalianum. J Agric Food Chem 2024; 72:10970-10980. [PMID: 38708787 DOI: 10.1021/acs.jafc.4c00371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2024]
Abstract
Eleven alkaloids (1-11) including seven new ones, 1-7, were isolated from the solid fermentation of Aspergillus fumigatus VDL36, an endophytic fungus isolated from the leaves of Vaccinium dunalianum Wight (Ericaceae), a perennial evergreen shrub distributed across the Southwest regions of China, Myanmar, and Vietnam. Their structures were elucidated on the basis of extensive spectroscopic methods. The isolates were evaluated for in vitro antifungal activities against five phytopathogenic fungi (Fusarium oxysporum, Coriolus versicolor, Fusarium solani, Botrytis cinerea, Fusarium graminearum). As a result, the new compounds fumigaclavine I (1), 13-ethoxycyclotryprostatin A (5), 13-dehydroxycyclotryprostatin A (6), and 12β-hydroxy-13-oxofumitremorgin C (7) exhibited antifungal activities with MIC values of 7.8-62.5 μg/mL which were comparable to the two positive controls ketoconazole (MIC = 7.8-31.25 μg/mL) and carbendazim (MIC = 1.95-7.8 μg/mL). Furthermore, compounds 1 and 5 demonstrated potent protective and curative effects against the tomato gray mold in vivo. Preliminary structure-activity relationships of the tested indole diketopiperazine alkaloids indicate that the introduction of a substituent group at position C-13 enhances their biological activities.
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Affiliation(s)
- Wei-Hua Wang
- Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, Southwest Forestry University, Kunming 650224, P. R. China
- Yunnan Key Laboratory of Gastrodia and Fungi Symbiotic Biology, Zhaotong University, Zhaotong 657000, Yunnan, P. R. China
| | - Chu-Ran Li
- Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, Southwest Forestry University, Kunming 650224, P. R. China
| | - Xu-Jie Qin
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, P. R. China
| | - Xiao-Qin Yang
- Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, Southwest Forestry University, Kunming 650224, P. R. China
| | - Si-Da Xie
- Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, Southwest Forestry University, Kunming 650224, P. R. China
| | - Qian Jiang
- Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, Southwest Forestry University, Kunming 650224, P. R. China
| | - Li-Hua Zou
- Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, Southwest Forestry University, Kunming 650224, P. R. China
| | - Ying-Jun Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, P. R. China
| | - Guo-Lei Zhu
- Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, Southwest Forestry University, Kunming 650224, P. R. China
| | - Ping Zhao
- Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, Southwest Forestry University, Kunming 650224, P. R. China
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Huang H, Wu D, Li Q, Niu L, Bi Z, Li J, Ye X, Xie C, Yang C. Jiegeng decoction ameliorated acute pharyngitis through suppressing NF-κB and MAPK signaling pathways. J Ethnopharmacol 2024:118328. [PMID: 38734391 DOI: 10.1016/j.jep.2024.118328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 04/23/2024] [Accepted: 05/09/2024] [Indexed: 05/13/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Jiegeng decoction (JGD), consisting of Glycyrrhizae Radix et Rhizoma and Platycodonis Radix at the ratio of 2:1, is a classical Chinese medicine prescription firstly recorded in "Treatise on Febrile Diseases". JGD has been extensively utilized to treat sore throat and lung diseases for thousands of years in China. However, the pharmacological effect and mechanism of JGD on acute pharyngitis (AP) remain unclear. AIM OF THE STUDY Our research aimed to reveal the pharmacological effect of JGD on AP and its potential mechanisms. MATERIALS AND METHODS The chemical components of JGD were analyzed based on the UPLC-MS analysis. The anti-inflammatory effect of JGD was evaluated by NO production using the Griess assay in RAW.246.7 cells. The mRNA expression of iNOS, IL-1β, IL-10, TNF-α, IL-6 and MCP-1 was determined by qRT-PCR in vitro. A 15% ammonia-induced AP model was established. The histopathology, the inflammatory cytokines IL-6 and MCP-1 in serum and the apoptosis-related genes caspease-8 and caspease-3 were determined by H&E staining, ELISA and qRT-PCR, respectively. The expression levels of p-p65, p65, p-JNK, JNK, p-p38, p38, p-ERK1/2, ERK1/2, and COX2 were measured through western blotting. RESULTS Nine compounds, including liquiritin, liquiritin apiosde, liquiritigenin, platycodin D, platycoside A, licorice saponin J2, licorice saponin G2, glycyrrhizic acid, and licochalcone A, were identified. JGD significantly inhibited NO production and regulated the mRNA expression levels of cytokines in LPS-stimulated RAW264.7 cells. The results of in vivo experiments confirmed that JGD ameliorated AP through improving the pathological state of pharyngeal tissue, decreasing the serum levels of IL-6 and MCP-1 and preventing the tissue mRNA expression of caspease-8 and caspease-3. Furthermore, JGD also inhibited the NF-κB and MAPK pathways in the AP model. CONCLUSIONS This study suggested that JGD could alleviate AP through its anti-inflammation via NF-κB and MAPK pathways, which supported the traditional application of JGD for the treatment of throat diseases.
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Affiliation(s)
- Hong Huang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300353, People's Republic of China; High-throughput Molecular Drug Screening Centre, Tianjin International Joint Academy of Biomedicine, Tianjin 300070, People's Republic of China
| | - Dan Wu
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300353, People's Republic of China
| | - Qing Li
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300353, People's Republic of China; High-throughput Molecular Drug Screening Centre, Tianjin International Joint Academy of Biomedicine, Tianjin 300070, People's Republic of China
| | - Lihang Niu
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300353, People's Republic of China
| | - Zhun Bi
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300353, People's Republic of China
| | - Jiahang Li
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300353, People's Republic of China; High-throughput Molecular Drug Screening Centre, Tianjin International Joint Academy of Biomedicine, Tianjin 300070, People's Republic of China
| | - Xiaoman Ye
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300353, People's Republic of China
| | - Chunfeng Xie
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300353, People's Republic of China.
| | - Cheng Yang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300353, People's Republic of China.
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Zhu QM, Wang C, Liu JW, Zhang R, Xin XL, Zhang J, Sun CP, Ma XC. Degradation profile of environmental pollutant 17β-estradiol by human intestinal fungus Aspergillus niger RG13B1 and characterization of genes involved in its degradation. Journal of Hazardous Materials 2024; 461:132617. [PMID: 37774607 DOI: 10.1016/j.jhazmat.2023.132617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 09/09/2023] [Accepted: 09/21/2023] [Indexed: 10/01/2023]
Abstract
Environmental hormones have attracted more attention because of their adverse impact on the health and ecological security of human. Biodegradation is still an efficient tactics to remove environmental hormones, but human intestinal microbes remain to be elucidated in the role of their degradation. In the present work, we intended to perform the in vitro experiment for investigating the degradation of 17β-estradiol, the main environmental estrogen, by human intestinal microflora Aspergillus niger RG13B1. Its degradation led to the production of eighteen metabolites characterized by 1H, 13C, and 2D NMR, and HRMS spectra, including nine new (1-9) and nine known metabolites (10-18). Based on their structures, the degradation pathway of 17β-estradiol mediated by A. niger RG13B1 involved hydroxylation, oxidation, methylation, acetylation, and dehydrogenation, especially infrequent lactylation, and the key degradation enzymes were found in the gene cluster of A. niger. In addition, we found that metabolite 12 interacted with amino acid residues Lys37, Gln39, Lys93, and Asn115 of NF-κB p65 to suppress expressions of inflammatory genes or proteins, exerting its anti-inflammatory effect. This study first illustrated the role of human gut microbe in 17β-estradiol degradation and provided new insights into its degradation mechanism by A. niger RG13B1.
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Affiliation(s)
- Qi-Meng Zhu
- Second Affiliated Hospital, Dalian Medical University, Dalian 116023, China; College of Pharmacy, Dalian Medical University, Dalian 116044, China
| | - Chao Wang
- College of Pharmacy, Dalian Medical University, Dalian 116044, China
| | - Jing-Wen Liu
- Second Affiliated Hospital, Dalian Medical University, Dalian 116023, China; College of Pharmacy, Dalian Medical University, Dalian 116044, China
| | - Rui Zhang
- School of Chinese Materia Medica, State Key Laboratory of Component-Based Chinese Medicine, Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Xiu-Lan Xin
- College of Bioengineering, Beijing Polytechnic, Beijing 100029, China
| | - Juan Zhang
- Second Affiliated Hospital, Dalian Medical University, Dalian 116023, China; School of Pharmaceutical Sciences, Medical School, Shenzhen University, Shenzhen 518061, China.
| | - Cheng-Peng Sun
- Second Affiliated Hospital, Dalian Medical University, Dalian 116023, China; College of Pharmacy, Dalian Medical University, Dalian 116044, China; School of Chinese Materia Medica, State Key Laboratory of Component-Based Chinese Medicine, Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China.
| | - Xiao-Chi Ma
- Second Affiliated Hospital, Dalian Medical University, Dalian 116023, China.
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Zhang T, Xing S, Du J, Xia J, Dong S, Li Z, Liu Z, Song Y. Discovery of novel TLR4/MD-2 inhibitors: Receptor structure-based virtual screening studies and anti-inflammatory evaluation. Bioorg Chem 2023; 141:106880. [PMID: 37783098 DOI: 10.1016/j.bioorg.2023.106880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 09/20/2023] [Accepted: 09/21/2023] [Indexed: 10/04/2023]
Abstract
In this study, a receptor structure-based virtual screening strategy was constructed using a computer-aided drug design. First, the compounds were filtered based on the Lipinski pentad and adsorption, distribution, metabolism, excretion, and toxicity profiles. Then, receptor structure-based pharmacophore models were constructed and screened. Finally, the in vitro toxicity and anti-inflammatory activities of hit compounds were initially evaluated to investigate their in vitro anti-inflammatory effects and mechanisms of action. The results revealed that hit 94 had the best anti-inflammatory activity and low toxicity while inhibiting the activation of Toll-like receptor (TLR) 4/myeloid differentiation factor 2 (MD2)-associated signaling pathways of nuclear factor-κB and mitogen-activated protein kinase. In vivo adjuvant arthritis results also revealed that hit 94 ameliorated foot swelling to a greater extent in rats compared with the positive control drug indomethacin. These results suggest that hit 94 can be used as a potential TLR/MD2 inhibitor for inflammatory diseases.
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Affiliation(s)
- Tengyue Zhang
- Department of Oncology, Anhui Provincial Cancer Hospital, West Branch of the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230000, China
| | - Siqi Xing
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230000, China; The Affiliated Suqian First People's Hospital of Nanjing Medical University, SuQian 223800, China
| | - Jiyu Du
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230000, China
| | - Jucheng Xia
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230000, China
| | - Shuanghong Dong
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230000, China
| | - Zeng Li
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230000, China.
| | - Zhicheng Liu
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230000, China.
| | - Yang Song
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230000, China; Department of Pain, The First Affiliated Hospital of Anhui Medical University, Anhui Medical Uiversity, Hefei 230032, China.
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Zhang J, Sun Y, Sun C, Shang D. The antimicrobial peptide LK2(6)A(L) exhibits anti-inflammatory activity by binding to the myeloid differentiation 2 domain and protects against LPS-induced acute lung injury in mice. Bioorg Chem 2023; 132:106376. [PMID: 36706531 DOI: 10.1016/j.bioorg.2023.106376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 01/07/2023] [Accepted: 01/12/2023] [Indexed: 01/19/2023]
Abstract
Acute lung injury (ALI) is a life-threatening disease that is generally attributable to an uncontrolled inflammatory response in the lung, but there is a lack of effective treatments. At present, regulating the inflammatory response has become an important strategy for treating ALI. In the present study, LK2(6)A(L), a peptide derived from the natural antimicrobial peptide temporin-1CEa, inhibited lipopolysaccharide (LPS)-induced expression of tumor necrosis factor alpha (TNF-α), interleukin-6 (IL-6), and NO in RAW264.7 cells. Herein, the anti-inflammatory mechanism of LK2(6)A(L) was investigated. The RNA-sequencing (RNA-seq) results showed that LK2(6)A(L) significantly inhibited the TLR4-mediated NF-κB and MAPK signaling pathways in LPS-induced RAW264.7 cells. The results of co-immunoprecipitation (Co-IP), pull-down experiment, confocal laser scanning microscopy, and surface plasmon resonance (SPR) suggested that MD2 was the direct target of LK2(6)A(L). Chemical inhibition of MD2 and its knockdown abolished the anti-inflammatory effect of LK2(6)A(L). Molecular dynamic simulation indicated that LK2(6)A(L) could bind to the active domain of the MD2 hydrophobic pocket via six hydrogen bonds. The truncated peptides were designed based on analysis of the molecular docking of LK2(6)A(L) to MD2. The truncated peptide IS-7 showed strong affinity to MD2 and a remarkable inhibitory effect on pro-inflammatory factors that was comparable to the effect of LK2(6)A(L). Finally, LK2(6)A(L) and IS-7 relieved inflammatory symptoms and lung tissue destruction in the ALI mouse model. Overall, our study suggested that LK2(6)A(L) showed promising anti-inflammatory activity by targeting MD2, and the amino acid domain 7-13 was an important area that binds with MD2 and also an anti-inflammatory active region. LK2(6)A(L) and IS-7 may be potential new treatments for ALI and other acute inflammatory diseases.
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Affiliation(s)
- Juan Zhang
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Yue Sun
- School of Life Science, Liaoning Normal University, Dalian 116081, China; Liaoning Provincial Key Laboratory of Biotechnology and Drug Discovery, Liaoning Normal University, Dalian 116081, China
| | - Chengpeng Sun
- College of Pharmacy, Dalian Medical University, Dalian 116044, China
| | - Dejing Shang
- School of Life Science, Liaoning Normal University, Dalian 116081, China; Liaoning Provincial Key Laboratory of Biotechnology and Drug Discovery, Liaoning Normal University, Dalian 116081, China.
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Zhang M, Zhang J, Zhu QM, Zhao WY, Lv X, Yi J, Huo XK, Wang MJ, Sun CP. Inula japonica ameliorated the inflammation and oxidative stress in LPS-induced acute lung injury through the MAPK/NF-κB and Keap1/Nrf2 signalling pathways. J Pharm Pharmacol 2023; 75:287-299. [PMID: 36617177 DOI: 10.1093/jpp/rgac084] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 10/15/2022] [Indexed: 01/09/2023]
Abstract
OBJECTIVES To investigate the protective effect and underlying mechanism of Inula japonica (TEIJ) in the treatment of acute lung injury (ALI). METHODS Protective effects of TEIJ in the inflammation and oxidative stress were studied in lipopolysaccharide (LPS)-induced ALI mice. Meanwhile, Western blot and real-time qPCR were carried out to investigate the underlying mechanism of TEIJ for ALI as well as immunohistochemistry. KEY FINDINGS TEIJ significantly alleviated the course of ALI via suppressing the interstitial infiltrated inflammatory cells, the increase of inflammatory factors and the decrease of anti-oxidative factors. TEIJ inactivated the MAPK/NF-κB signalling pathway to suppress the transcription of its downstream target genes, such as TNF-α, IL-6, etc. Meanwhile, TEIJ activated the Keap1/Nrf2 signalling pathway to regulate expression levels of Nrf2 and its target proteins. The results of LC-QTOF-MS/MS indicated potential active constituents of I. japonica, terpenoids and flavonoids. Additionally, terpenoids and flavonoids synergistically alleviated LPS-induced ALI depending on MAPK/NF-κB and Keap1/Nrf2 signalling pathways. CONCLUSION I. japonica could be considered a potential agent to treat ALI via regulating the MAPK/NF-κB and Keap1/Nrf2 signalling pathways.
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Affiliation(s)
- Min Zhang
- College of Pharmacy, College (Institute) of Integrative Medicine, Dalian Medical University, Dalian, China.,Second Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Juan Zhang
- College of Pharmacy, College (Institute) of Integrative Medicine, Dalian Medical University, Dalian, China.,School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen, China
| | - Qi-Meng Zhu
- College of Pharmacy, College (Institute) of Integrative Medicine, Dalian Medical University, Dalian, China
| | - Wen-Yu Zhao
- College of Pharmacy, College (Institute) of Integrative Medicine, Dalian Medical University, Dalian, China
| | - Xia Lv
- College of Pharmacy, College (Institute) of Integrative Medicine, Dalian Medical University, Dalian, China
| | - Jing Yi
- College of Pharmacy, College (Institute) of Integrative Medicine, Dalian Medical University, Dalian, China
| | - Xiao-Kui Huo
- College of Pharmacy, College (Institute) of Integrative Medicine, Dalian Medical University, Dalian, China
| | - Mi-Jia Wang
- Second Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Cheng-Peng Sun
- College of Pharmacy, College (Institute) of Integrative Medicine, Dalian Medical University, Dalian, China
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Zhang M, Zhang J, Wang C, Yan JK, Yi J, Ning J, Huo XK, Yu ZL, Zhang BJ, Sun CP, Ma XC. Biotransformation of 18β-Glycyrrhetinic Acid by Human Intestinal Fungus Aspergillus niger RG13B1 and the Potential Anti-Inflammatory Mechanism of Its Metabolites. J Agric Food Chem 2022; 70:15104-15115. [PMID: 36414003 DOI: 10.1021/acs.jafc.2c05455] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
18β-Glycyrrhetinic acid (GA) is a triterpenoid possessing an anti-inflammatory activity in vivo, while the low bioavailability limits its application due to its intestinal accumulation. In order to investigate the metabolism of GA in intestinal microbes, it was incubated with human intestinal fungus Aspergillus niger RG13B1, finally leading to the isolation and identification of three new metabolites (1-3) and three known metabolites (4-6) based on 1D and 2D NMR and high-resolution electrospray ionization mass spectroscopy spectra. Metabolite 6 could target myeloid differentiation protein 2 (MD2) to suppress the activation of nuclear factor-kappa B (NF-κB) signaling pathway via inhibiting the nuclear translocation of p65 to downregulate its target proteins and genes in lipopolysaccharide (LPS)-mediated RAW264.7 cells. Molecular dynamics suggested that metabolite 6 interacted with MD2 through the hydrogen bond of amino acid residue Arg90. These findings demonstrated that metabolite 6 could serve as a potential candidate to develop the new inhibitors of MD2.
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Affiliation(s)
- Min Zhang
- College of Pharmacy, Second Affiliated Hospital, Dalian Medical University, Dalian 116044, China
| | - Juan Zhang
- College of Pharmacy, Second Affiliated Hospital, Dalian Medical University, Dalian 116044, China
- School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen 518060, China
| | - Chao Wang
- College of Pharmacy, Second Affiliated Hospital, Dalian Medical University, Dalian 116044, China
| | - Jian-Kun Yan
- School of Pharmacy, Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Jing Yi
- College of Pharmacy, Second Affiliated Hospital, Dalian Medical University, Dalian 116044, China
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Jing Ning
- College of Pharmacy, Second Affiliated Hospital, Dalian Medical University, Dalian 116044, China
| | - Xiao-Kui Huo
- College of Pharmacy, Second Affiliated Hospital, Dalian Medical University, Dalian 116044, China
| | - Zhen-Long Yu
- College of Pharmacy, Second Affiliated Hospital, Dalian Medical University, Dalian 116044, China
| | - Bao-Jing Zhang
- College of Pharmacy, Second Affiliated Hospital, Dalian Medical University, Dalian 116044, China
| | - Cheng-Peng Sun
- College of Pharmacy, Second Affiliated Hospital, Dalian Medical University, Dalian 116044, China
| | - Xiao-Chi Ma
- College of Pharmacy, Second Affiliated Hospital, Dalian Medical University, Dalian 116044, China
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Zhang J, Zhang M, Zhang WH, Zhu QM, Huo XK, Sun CP, Ma XC, Xiao HT. Total flavonoids of Inula japonica alleviated the inflammatory response and oxidative stress in LPS-induced acute lung injury via inhibiting the sEH activity: Insights from lipid metabolomics. Phytomedicine 2022; 107:154380. [PMID: 36150346 DOI: 10.1016/j.phymed.2022.154380] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 07/04/2022] [Accepted: 08/02/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Acute lung injury (ALI) is a severe respiratory disease characterized by diffuse lung interstitial and respiratory distress and pulmonary edema with a mortality rate of 35%-40%. Inula japonica Thunb., known as "Xuan Fu Hua" in Chinese, is a traditional Chinese medicine Inulae Flos to use for relieving cough, eliminating expectorant, and preventing bacterial infections in the clinic, and possesses an anti-pulmonary fibrosis effect. However, the effect and action mechanism of I. japonica on ALI is still unclear. PURPOSE This study aimed to investigate the protective effect and underlying mechanism of total flavonoids of I. japonica (TFIJ) in the treatment of ALI. STUDY DESIGN AND METHODS A mouse ALI model was established through administration of LPS by the intratracheal instillation. Protective effects of TFIJ in the inflammation and oxidative stress were studied in LPS-induced ALI mice based on inflammatory and oxidative stress factors, including MDA, MPO, SOD, and TNF-α. Lipid metabolomics, bioinformatics, Western blot, quantitative real-time PCR, and immunohistochemistry were performed to reveal the potential mechanism of TFIJ in the treatment of ALI. RESULTS TFIJ significantly alleviated the interstitial infiltration of inflammatory cells and the collapse of the alveoli in LPS-induced ALI mice. Lipid metabolomics demonstrated that TFIJ could significantly affect the CYP2J/sEH-mediated arachidonic acid metabolism, such as 11,12-EET, 14,15-EET, 8,9-DHET, 11,12-DHET, and 14,15-DHET, revealing that sEH was the potential target of TFIJ, which was further supported by the recombinant sEH-mediated the substrate hydrolysis in vitro (IC50 = 1.18 μg/ml). Inhibition of sEH by TFIJ alleviated the inflammatory response and oxidative stress via the MAPK, NF-κB, and Nrf2 signaling pathways. CONCLUSION These results demonstrated that TFIJ could suppress the sEH activity to stabilize the level of EETs, allowing the alleviation of the pathological course of lung injury in LPS-treated mice, which suggested that TFIJ could serve as the potential agents in the treatment of ALI.
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Affiliation(s)
- Juan Zhang
- School of pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen, China; Second Affiliated Hospital, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Min Zhang
- Second Affiliated Hospital, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Wen-Hao Zhang
- Second Affiliated Hospital, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Qi-Meng Zhu
- Second Affiliated Hospital, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Xiao-Kui Huo
- Second Affiliated Hospital, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Cheng-Peng Sun
- Second Affiliated Hospital, College of Pharmacy, Dalian Medical University, Dalian, China.
| | - Xiao-Chi Ma
- Second Affiliated Hospital, College of Pharmacy, Dalian Medical University, Dalian, China.
| | - Hai-Tao Xiao
- School of pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen, China.
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Xing S, Fan W, Chen J, Du J, Liu T, Dong S, Xia J, Liu P, Zou D, Cai L, Li Z. Novel quinoline-based derivatives: A new class of PDE4B inhibitors for adjuvant-induced arthritis. Eur J Med Chem 2022; 238:114497. [PMID: 35660249 DOI: 10.1016/j.ejmech.2022.114497] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 05/22/2022] [Accepted: 05/25/2022] [Indexed: 11/24/2022]
Abstract
A total of 31 quinoline-based derivatives were designed and synthesized to develop novel anti-inflammatory drugs. After the toxicity of synthetic compounds to RAW264.7 cells were evaluated in vitro, their anti-inflammatory activity was assessed by inhibiting lipopolysaccharide (LPS)-induced NO production levels in the RAW264.7 cells. Among the derivatives, compound f4 had the best anti-inflammatory activity, which could reduce the production of pro-inflammatory cytokines NO, IL-1β, and TNF-α with corresponding IC50 values of 20.40 ± 0.94, 18.98 ± 0.21 and 23.48 ± 0.46 μM. Western blot showed that f4 could inhibit the expression of LPS-induced inflammatory mediators iNOS and COX-2. Molecular docking showed that f4 could also enter the PDE4B receptor binding pocket, and the cellular thermal shift assay method indicated that the PDE4B protein bound to f4 had increased stability. Meanwhile, the inhibitory effect of this compound on the PDE4B enzyme (IC50 = 0.94 ± 0.36 μM) was comparable to that of the positive drug rolipram (IC50 = 1.04 ± 0.28 μM). Finally, in vivo studies showed that f4 could improve the degree of foot swelling and knee joint pathology in adjuvant-induced arthritic rats and decrease the levels of serum inflammatory factors TNF-α and IL-1β in a dose-dependent manner. Therefore, the development and design of quinoline-based derivatives for anti-inflammatory applications could be considered opportunities and challenges.
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