1
|
Xia F, Lin LS, Li YL, Yang L, Ye YS, Li X, Zhao JH, Deng J, Xu G. Discovery and Bioinspired Synthesis of Salpratone A. J Org Chem 2024; 89:1858-1863. [PMID: 38215471 DOI: 10.1021/acs.joc.3c02584] [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: 01/14/2024]
Abstract
Salpratone A (1), a novel abietane diterpenoid containing a unique cis-fused A/B ring, was isolated from Salvia prattii. Bioactivity studies showed that 1 has potent activity in inhibiting platelet aggregation induced by multiple agonists as well as antithrombotic efficacy in the FeCl3-induced rat in vivo thrombosis model. Furthermore, a bioinspired synthesis of 1 from the abundant natural product ferruginol was achieved in 6 steps with a 22% overall yield. The key steps include a stereoselective allyl oxidation and a subsequent regioselective Meinwald rearrangement.
Collapse
Affiliation(s)
- Fan Xia
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Li-Sha Lin
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Yan-Ling Li
- School of Pharmaceutical Science and Yunnan Key Laboratory of Pharmacology of Nature Products, Kunming Medical University, Kunming 650500, China
| | - Lian Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Yan-Song Ye
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Xian Li
- School of Pharmaceutical Science and Yunnan Key Laboratory of Pharmacology of Nature Products, Kunming Medical University, Kunming 650500, China
| | - Jin-Hua Zhao
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430000, China
| | - Jun Deng
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Gang Xu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| |
Collapse
|
2
|
Wu YC, Xu GS, Li HJ, Bian YJ, Qi ZQ, Wu YC. Divergent and Stereoselective Synthesis of Ustusal A, (-)-Albrassitriol, and Elegansin D. J Org Chem 2023; 88:16511-16519. [PMID: 37972539 DOI: 10.1021/acs.joc.3c01992] [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: 11/19/2023]
Abstract
The first synthesis of ustusal A as well as expeditious access to (-)-albrassitriol is described as featuring a singlet oxygen [4 + 2] cycloaddition, achieving the desired stereoselectivity for the 1,4-cis-hydroxyl groups. Transformation of (+)-sclareolide to III followed by a key Horner-Wadsworth-Emmons (HWE) reaction and stereospecific allylic oxidation facilitated the first synthesis of elegansin D. The biological evaluation of these natural products together with seven elegansin D analogues was performed, among which several elegansin D analogues exhibited potential anticancer activity against liver cancer HepG2 cells (IC50 = 11.99-25.58 μM) with low cytotoxicity on normal liver HL7702 cells (IC50 > 100 μM).
Collapse
Affiliation(s)
- Yue-Cheng Wu
- Weihai Marine Organism & Medical Technology Research Institute, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150006, P. R. China
| | - Guang-Sen Xu
- Weihai Key Laboratory of Active Factor of Marine Products, Weihai Marine Organism & Medical Technology Research Institute, Harbin Institute of Technology, Weihai 264209, P. R. China
| | - Hui-Jing Li
- Weihai Marine Organism & Medical Technology Research Institute, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150006, P. R. China
- Weihai Key Laboratory of Active Factor of Marine Products, Weihai Marine Organism & Medical Technology Research Institute, Harbin Institute of Technology, Weihai 264209, P. R. China
| | - Ya-Jing Bian
- Weihai Key Laboratory of Active Factor of Marine Products, Weihai Marine Organism & Medical Technology Research Institute, Harbin Institute of Technology, Weihai 264209, P. R. China
| | - Zhong-Quan Qi
- Weihai Key Laboratory of Active Factor of Marine Products, Weihai Marine Organism & Medical Technology Research Institute, Harbin Institute of Technology, Weihai 264209, P. R. China
| | - Yan-Chao Wu
- Weihai Marine Organism & Medical Technology Research Institute, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150006, P. R. China
- Weihai Key Laboratory of Active Factor of Marine Products, Weihai Marine Organism & Medical Technology Research Institute, Harbin Institute of Technology, Weihai 264209, P. R. China
| |
Collapse
|
3
|
Jongsomjainuk O, Boonsombat J, Thongnest S, Prawat H, Batsomboon P, Charoensutthivarakul S, Ruchisansakun S, Chainok K, Sirirak J, Mahidol C, Ruchirawat S. Kaemtakols A-D, highly oxidized pimarane diterpenoids with potent anti-inflammatory activity from Kaempferia takensis. NATURAL PRODUCTS AND BIOPROSPECTING 2023; 13:55. [PMID: 38036688 PMCID: PMC10689700 DOI: 10.1007/s13659-023-00420-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 11/19/2023] [Indexed: 12/02/2023]
Abstract
Four highly oxidized pimarane diterpenoids were isolated from Kaempferia takensis rhizomes. Kaemtakols A-C possess a tetracyclic ring with either a fused tetrahydropyran or tetrahydrofuran motif. Kaemtakol D has an unusual rearranged A/B ring spiro-bridged pimarane framework with a C-10 spirocyclic junction and an adjacent 1-methyltricyclo[3.2.1.02,7]octene ring. Structural characterization was achieved using spectroscopic analysis, DP4 + and ECD calculations, as well as X-ray crystallography, and their putative biosynthetic pathways have been proposed. Kaemtakol B showed significant potency in inhibiting nitric oxide production with an IC50 value of 0.69 μM. Molecular docking provided some perspectives on the action of kaemtakol B on iNOS protein.
Collapse
Affiliation(s)
- Orawan Jongsomjainuk
- Laboratory of Natural Products, Chulabhorn Research Institute, Bangkok, Thailand
| | - Jutatip Boonsombat
- Laboratory of Natural Products, Chulabhorn Research Institute, Bangkok, Thailand
- Center of Excellence on Environmental Health and Toxicology (EHT), OPS, MHESI, Bangkok, Thailand
| | - Sanit Thongnest
- Laboratory of Natural Products, Chulabhorn Research Institute, Bangkok, Thailand.
- Center of Excellence on Environmental Health and Toxicology (EHT), OPS, MHESI, Bangkok, Thailand.
| | - Hunsa Prawat
- Laboratory of Natural Products, Chulabhorn Research Institute, Bangkok, Thailand
- Center of Excellence on Environmental Health and Toxicology (EHT), OPS, MHESI, Bangkok, Thailand
| | | | - Sitthivut Charoensutthivarakul
- Excellent Center for Drug Discovery (ECDD), School of Bioinnovation and Bio-Based Product Intelligence, and Center for Neuroscience, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Saroj Ruchisansakun
- Department of Plant Science, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Kittipong Chainok
- Thammasat University Research Unit in Multifunctional Crystalline Materials and Applications (TU-MCMA), Faculty of Science and Technology, Thammasat University, Pathum Thani, Thailand
| | - Jitnapa Sirirak
- Department of Chemistry, Faculty of Science, Silpakorn University, Nakhon Pathom, Thailand
| | - Chulabhorn Mahidol
- Laboratory of Natural Products, Chulabhorn Research Institute, Bangkok, Thailand
- Program in Chemical Sciences, Chulabhorn Graduate Institute, Chulabhorn Royal Academy, Bangkok, Thailand
| | - Somsak Ruchirawat
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, Bangkok, Thailand
- Program in Chemical Sciences, Chulabhorn Graduate Institute, Chulabhorn Royal Academy, Bangkok, Thailand
- Center of Excellence on Environmental Health and Toxicology (EHT), OPS, MHESI, Bangkok, Thailand
| |
Collapse
|
4
|
Xia F, Lin LS, Ye YS, Yang L, Zhao JH, Xu G. 11,12-seco-Abietane-type diterpene lactones with potential antiplatelet activity from Salvia prattii. Bioorg Chem 2023; 140:106834. [PMID: 37677855 DOI: 10.1016/j.bioorg.2023.106834] [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: 07/17/2023] [Revised: 08/22/2023] [Accepted: 08/31/2023] [Indexed: 09/09/2023]
Abstract
Eleven new abietane-type diterpene lactones, salpratlactones D-N (1-11), including five 11,12-seco-11-nor-abietane diterpenes (1-5), four 11,12-seco-abietane diterpenes (6-9), two 20(10 → 5)-abeo-4,5;11,12-bis-seco-abietane diterpenes (10-11), and two known analogues (12-13), were characterized from Salvia prattii. Notably, compounds 1-3 were characterized by a unique linear 6/6/6 tricyclic skeleton. The structures were established by spectroscopic data interpretation, calculated NMR-DP4+ and electronic circular dichroism analysis, as well as single-crystal X-ray diffraction. A bioactivity study showed that 1, 2, 5, 11, and 12 can potently inhibit platelet aggregation induced by arachidonic acid (AA), with IC50 values of 5.66-16.10 μg/ml, stronger than aspirin. In addition, the lactate dehydrogenase assay showed that they had no effect on platelet integrity. Structurally, the same 1,2-benzopyrone fragments of 1, 2, and 5 should be the important pharmacophore for antiplatelet activity.
Collapse
Affiliation(s)
- Fan Xia
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People's Republic of China
| | - Li-Sha Lin
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People's Republic of China
| | - Yan-Song Ye
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People's Republic of China
| | - Lian Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People's Republic of China
| | - Jin-Hua Zhao
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430000, Hubei, People's Republic of China.
| | - Gang Xu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People's Republic of China.
| |
Collapse
|
5
|
Chawengrum P, Luepongpatthana N, Thongnest S, Sirirak J, Boonsombat J, Lirdprapamongkol K, Keeratichamroen S, Kongwaen P, Montatip P, Kittakoop P, Svasti J, Ruchirawat S. The amide derivative of anticopalic acid induces non-apoptotic cell death in triple-negative breast cancer cells by inhibiting FAK activation. Sci Rep 2023; 13:13456. [PMID: 37596365 PMCID: PMC10439230 DOI: 10.1038/s41598-023-40669-6] [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: 03/25/2023] [Accepted: 08/16/2023] [Indexed: 08/20/2023] Open
Abstract
Anticopalic acid (ACP), a labdane type diterpenoid obtained from Kaempferia elegans rhizomes, together with 21 semi-synthetic derivatives, were evaluated for their cancer cytotoxic activity. Most derivatives displayed higher cytotoxic activity than the parent compound ACP in a panel of nine cancer cell lines. Among the tested compounds, the amide 4p showed the highest cytotoxic activity toward leukemia cell lines, HL-60 and MOLT-3, with IC50 values of 6.81 ± 1.99 and 3.72 ± 0.26 µM, respectively. More interestingly, the amide derivative 4l exhibited cytotoxic activity with an IC50 of 13.73 ± 0.04 µM against the MDA-MB-231 triple-negative breast cancer cell line, which is the most aggressive type of breast cancer. Mechanistic studies revealed that 4l induced cell death in MDA-MB-231 cells through non-apoptotic regulated cell death. In addition, western blot analysis showed that compound 4l decreased the phosphorylation of FAK protein in a concentration-dependent manner. Molecular docking simulations elucidated that compound 4l could potentially inhibit FAK activation by binding to a pocket of FAK kinase domain. The data suggested that compound 4l could be a potential FAK inhibitor for treating triple-negative breast cancer and worth being further investigated.
Collapse
Affiliation(s)
- Pornsuda Chawengrum
- Chemical Biology Program, Chulabhorn Graduate Institute, Chulabhorn Royal Academy, Bangkok, Thailand
| | - Natthaorn Luepongpatthana
- Applied Biological Sciences Program, Chulabhorn Graduate Institute, Chulabhorn Royal Academy, Bangkok, Thailand
| | - Sanit Thongnest
- Laboratory of Natural Products, Chulabhorn Research Institute, Bangkok, Thailand
- Center of Excellence on Environmental Health and Toxicology (EHT), Office of the Permanent Secretary (OPS), Ministry of Higher Education, Science, Research and Innovation (MHESI), Bangkok, Thailand
| | - Jitnapa Sirirak
- Department of Chemistry, Faculty of Science, Silpakorn University, Nakhon Pathom, Thailand
| | - Jutatip Boonsombat
- Laboratory of Natural Products, Chulabhorn Research Institute, Bangkok, Thailand.
- Center of Excellence on Environmental Health and Toxicology (EHT), Office of the Permanent Secretary (OPS), Ministry of Higher Education, Science, Research and Innovation (MHESI), Bangkok, Thailand.
| | - Kriengsak Lirdprapamongkol
- Center of Excellence on Environmental Health and Toxicology (EHT), Office of the Permanent Secretary (OPS), Ministry of Higher Education, Science, Research and Innovation (MHESI), Bangkok, Thailand.
- Laboratory of Biochemistry, Chulabhorn Research Institute, Bangkok, Thailand.
| | | | - Patcharin Kongwaen
- Laboratory of Natural Products, Chulabhorn Research Institute, Bangkok, Thailand
| | - Phreeranat Montatip
- Laboratory of Biochemistry, Chulabhorn Research Institute, Bangkok, Thailand
| | - Prasat Kittakoop
- Chemical Biology Program, Chulabhorn Graduate Institute, Chulabhorn Royal Academy, Bangkok, Thailand
- Laboratory of Natural Products, Chulabhorn Research Institute, Bangkok, Thailand
- Center of Excellence on Environmental Health and Toxicology (EHT), Office of the Permanent Secretary (OPS), Ministry of Higher Education, Science, Research and Innovation (MHESI), Bangkok, Thailand
| | - Jisnuson Svasti
- Applied Biological Sciences Program, Chulabhorn Graduate Institute, Chulabhorn Royal Academy, Bangkok, Thailand
- Laboratory of Biochemistry, Chulabhorn Research Institute, Bangkok, Thailand
| | - Somsak Ruchirawat
- Chemical Biology Program, Chulabhorn Graduate Institute, Chulabhorn Royal Academy, Bangkok, Thailand
- Laboratory of Natural Products, Chulabhorn Research Institute, Bangkok, Thailand
- Center of Excellence on Environmental Health and Toxicology (EHT), Office of the Permanent Secretary (OPS), Ministry of Higher Education, Science, Research and Innovation (MHESI), Bangkok, Thailand
| |
Collapse
|
6
|
Booranaseensuntorn P, Boonsombat J, Mahidol C, Reuk-Ngam N, Khlaychan P, Batsomboon P, Techasakul S, Thongnest S, Ruchirawat S. Diterpenoids and p-methoxycinnamic acid diol esters from Kaempferia saraburiensis Picheans. (Zingiberaceae): Structural assignment of saraburol and their biological activities. PHYTOCHEMISTRY 2022; 199:113181. [PMID: 35367464 DOI: 10.1016/j.phytochem.2022.113181] [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: 01/07/2022] [Revised: 03/11/2022] [Accepted: 03/28/2022] [Indexed: 06/14/2023]
Abstract
Five undescribed compounds, including three diterpenoids namely, saraburol, saraburanes A and B, and two p-methoxycinnamic acid monoterpene diol esters, named E/Z-saraburinic esters, together with ten known oxygenated isopimarane diterpenoids, were isolated from the whole plant of Kaempferia saraburiensis Picheans. Among these compounds, saraburol possesses an unusual 6/9/6 tricyclic ring system bearing a 1,3-dioxonane-4-one scaffold, which is rarely found in natural products. The structure of isolated compounds was elucidated by spectroscopic methods, including HRESIMS, FTIR, 1D and 2D-NMR, and by comparison with published data, and their absolute configurations were determined by comparison of experimental with calculated ECD spectra and hydrolysis reaction. Using gauge-independent atomic orbital (GIAO) NMR shift calculations coupled with DP4+ probability analyses, biogenetic considerations, and optical rotation allowed for the complete characterization of saraburol. A plausible biosynthetic pathway for saraburol and saraburane A was proposed. The cytotoxicity result indicated that E-saraburinic ester exhibited the most potent activity with an IC50 value of 12.0 μM against MOLT-3 cells with a selectivity index of 12.5. Saraburane B exhibited the most potent activity against Gram-positive bacteria strain Staphylococcus epidermidis with MIC (MBC) value of 25 (50) μg/mL.
Collapse
Affiliation(s)
- Pornpuk Booranaseensuntorn
- Chemical Biology Program, Chulabhorn Graduate Institute, Chulabhorn Royal Academy, Kamphaeng Phet 6 Road, Bangkok, Thailand
| | - Jutatip Boonsombat
- Laboratory of Natural Products, Chulabhorn Research Institute, Kamphaeng Phet 6 Road, Bangkok, Thailand; Center of Excellence on Environmental Health and Toxicology (EHT), OPS, MHESI, Thailand
| | - Chulabhorn Mahidol
- Laboratory of Natural Products, Chulabhorn Research Institute, Kamphaeng Phet 6 Road, Bangkok, Thailand; Program in Chemical Science, Chulabhorn Graduate Institute, Chulabhorn Royal Academy, Kamphaeng Phet 6 Road, Bangkok, Thailand
| | - Nanthawan Reuk-Ngam
- Laboratory of Natural Products, Chulabhorn Research Institute, Kamphaeng Phet 6 Road, Bangkok, Thailand
| | - Panita Khlaychan
- Laboratory of Natural Products, Chulabhorn Research Institute, Kamphaeng Phet 6 Road, Bangkok, Thailand
| | - Paratchata Batsomboon
- Laboratory of Natural Products, Chulabhorn Research Institute, Kamphaeng Phet 6 Road, Bangkok, Thailand
| | - Supanna Techasakul
- Laboratory of Natural Products, Chulabhorn Research Institute, Kamphaeng Phet 6 Road, Bangkok, Thailand
| | - Sanit Thongnest
- Laboratory of Natural Products, Chulabhorn Research Institute, Kamphaeng Phet 6 Road, Bangkok, Thailand; Center of Excellence on Environmental Health and Toxicology (EHT), OPS, MHESI, Thailand.
| | - Somsak Ruchirawat
- Chemical Biology Program, Chulabhorn Graduate Institute, Chulabhorn Royal Academy, Kamphaeng Phet 6 Road, Bangkok, Thailand; Laboratory of Natural Products, Chulabhorn Research Institute, Kamphaeng Phet 6 Road, Bangkok, Thailand; Center of Excellence on Environmental Health and Toxicology (EHT), OPS, MHESI, Thailand; Program in Chemical Science, Chulabhorn Graduate Institute, Chulabhorn Royal Academy, Kamphaeng Phet 6 Road, Bangkok, Thailand
| |
Collapse
|
7
|
Hashiguchi A, San Thawtar M, Duangsodsri T, Kusano M, Watanabe KN. Biofunctional properties and plant physiology of Kaempferia spp.: Status and trends. J Funct Foods 2022. [DOI: 10.1016/j.jff.2022.105029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
8
|
Liu XH, Song YP, Yin XL, Ji NY. Antimicrobial Terpenoids and Polyketides from the Algicolous Fungus Byssochlamys spectabilis RR-dl-2-13. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:4658-4666. [PMID: 35384660 DOI: 10.1021/acs.jafc.2c00259] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Four new carotane sesquiterpenoids, byssocarotins A-D (1-4), two new nor-sesquiterpenoids, byssofarnesin (5) and byssosesquicarin (6), and three new polyketides, byssoketides A and B (7 and 8) and (8R)-paecilocin A (9a), were obtained from a macroalga-associated strain (RR-dl-2-13) of the fungus Byssochlamys spectabilis. These isolates were identified by a combination of spectroscopic methods, including mass spectroscopy, nuclear magnetic resonance, electronic circular dichroism, and X-ray diffraction. Compounds 1-4 greatly contribute to the diversity of rarely occurring 2,15-epoxycarotane sesquiterpenoids, while 5 and 6 are degradation products of farnesane and sesquicarane precursors, respectively. Compound 7 is a structurally unique furan fatty acid derivative that possesses an aldehyde group and a large conjugated unit, and 8 features a hemiketal group. During antimicrobial assays, 8 showed antagonism against the phytopathogenic fungi Glomerella cingulata, Fusarium oxysporum f. sp. cucumerium, and F. oxysporum f. sp. cubense and the marine-derived bacteria Vibrio parahaemolyticus and V. harveyi with MIC values of 13 to 50 μg/mL.
Collapse
Affiliation(s)
- Xiang-Hong Liu
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Yin-Ping Song
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, People's Republic of China
| | - Xiu-Li Yin
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, People's Republic of China
| | - Nai-Yun Ji
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, People's Republic of China
| |
Collapse
|
9
|
Gao X, Shen X, Zheng Y, Yang L, Zhang X, Hu G, Jia J, Wang A. Sesquiterpene Lactones from Sigesbeckia glabrescens Possessing Potent Anti-inflammatory Activity by Directly Binding to IKKα/β. JOURNAL OF NATURAL PRODUCTS 2021; 84:2808-2821. [PMID: 34726063 DOI: 10.1021/acs.jnatprod.1c00416] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Chromatographic fractionation of Sigesbeckia glabrescens led to the identification of 10 new sesquiterpene lactones, named siegesbeckialides I-O (1-7) and glabrescones A-C (8-10), along with 14 known analogues. An anti-inflammatory activity assay showed that siegesbeckialide I (1) most potently inhibited LPS-induced NO production in RAW264.7 murine macrophages. Furthermore, siegesbeckialide I suppressed the protein expression of iNOS and COX2, as well as the release of PGE2, IL-1β, IL-6, and TNF-α in LPS-stimulated RAW264.7 cells. Mechanistically, siegesbeckialide I directly binds to inhibitors of IKKα/β and suppresses their phosphorylation. This leads to the inhibition of IKKα/β-mediated phosphorylation and degradation of inhibitor α of NF-κB (IκBα), as well as the activation of NF-κB signaling.
Collapse
Affiliation(s)
- Xiaoxu Gao
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Xiaofei Shen
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, People's Republic of China
| | - Yingying Zheng
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Luyao Yang
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, People's Republic of China
| | - Xiaoyu Zhang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Gaosheng Hu
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Jingming Jia
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Anhua Wang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| |
Collapse
|