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Yu E, Song Y, Gu SM, Jo YH, Yeon SW, Han KJ, Lee MK, Min JK, Yun J. Alpinumisoflavone ameliorates choroidal neovascularisation and fibrosis in age-related macular degeneration in in vitro and in vivo models. Sci Rep 2022; 12:14316. [PMID: 35995845 DOI: 10.1038/s41598-022-18531-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 08/16/2022] [Indexed: 11/08/2022] Open
Abstract
Age-related macular degeneration (AMD) is a major cause of vision loss in the elderly population. Anti-vascular endothelial growth factor (VEGF) antibody therapy is applicable to neovascularisation of AMD; however, the prevention of fibrosis after anti-VEGF monotherapy is an unmet medical need. Subretinal fibrosis causes vision loss in neovascular age-related macular degeneration (nAMD) even with anti-VEGF therapy. We report the anti-fibrotic and anti-neovascularisation effects of alpinumisoflavone (AIF), an isoflavonoid derived from unripe Maclura tricuspidata fruit, in in vitro and in vivo models. For in vitro study, we treated H2O2 or THP-1 conditioned media (TCM) following activation with phorbol 12-myristate 13-acetate (PMA) and lipopolysaccharide (LPS) in a human retinal pigment epithelial cell line (ARPE-19). Choroidal neovascularisation (CNV) was induced by laser photocoagulation in mice, immediately followed by intravitreal administration of 25 μg AIF. CNV area and fibrosis were measured 7 days after laser photocoagulation. AIF showed anti-fibrosis and anti-neovascularisation effects in both the models. The laser induced CNV area was reduced upon AIF administration in nAMD mouse model. Additionally, AIF decreased the levels of the cleaved form of crystallin alpha B (CRYAB), a chaperone associated with VEGF stabilisation and fibrosis. Our results demonstrate a novel therapeutic application of AIF against neovascularisation and fibrosis in nAMD.
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Jo MJ, Jo YH, Lee YJ, Park CW, Kim JS, Hong JT, Chung YB, Lee MK, Shin DH. Physicochemical, Pharmacokinetic, and Toxicity Evaluation of Methoxy Poly(ethylene glycol)- b-Poly(d,l-Lactide) Polymeric Micelles Encapsulating Alpinumisoflavone Extracted from Unripe Cudrania tricuspidata Fruit. Pharmaceutics 2019; 11:E366. [PMID: 31374844 PMCID: PMC6722910 DOI: 10.3390/pharmaceutics11080366] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 07/17/2019] [Accepted: 07/22/2019] [Indexed: 11/23/2022] Open
Abstract
Alpinumisoflavone, a major compound in unripe Cudrania tricuspidata fruit is reported to exhibit numerous beneficial pharmacological activities, such as osteoprotective, antibacterial, estrogenic, anti-metastatic, atheroprotective, antioxidant, and anticancer effects. Despite its medicinal value, alpinumisoflavone is poorly soluble in water, which makes it difficult to formulate and administer intravenously (i.v.). To overcome these limitations, we used methoxy poly(ethylene glycol)-b-poly(d,l-lactide) (mPEG-b-PLA) polymeric micelles to solubilize alpinumisoflavone and increase its bioavailability, and evaluated their toxicity in vivo. Alpinumisoflavone-loaded polymeric micelles were prepared using thin-film hydration method, and their physicochemical properties were characterized for drug release, particle size, drug-loading (DL, %), and encapsulation efficiency (EE, %). The in vitro drug release profile was determined and the release rate of alpinumisoflavone from mPEG-b-PLA micelles was slower than that from drug solution, and sustained. Pharmacokinetic studies showed decreased total clearance and volume of distribution of alpinumisoflavone, whereas area under the curve (AUC) and bioavailability were significantly increased by incorporation in mPEG-b-PLA micelles. In vivo toxicity assay revealed that alpinumisoflavone-loaded mPEG-b-PLA micelles had no severe toxicity. In conclusion, we prepared an intravenous (i.v.) injectable alpinumisoflavone formulation, which was solubilized using mPEG-b-PLA micelles, and determined their physicochemical properties, pharmacokinetics, and toxicity profiles.
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Affiliation(s)
- Min Jeong Jo
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea
| | - Yang Hee Jo
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea
| | - Yu Jin Lee
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea
| | - Chun-Woong Park
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea
| | - Jin-Seok Kim
- Drug Information Research Institute (DIRI), College of Pharmacy, Sookmyung Women's University, Seoul 04310, Korea
| | - Jin Tae Hong
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea
| | - Youn Bok Chung
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea
| | - Mi Kyeong Lee
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea.
| | - Dae Hwan Shin
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea.
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Harrison JJE, Ayine-Tora MD, Appiagyei B, Mills-Robertson FC, Asomaning WA, Achel DG, Ishida H, Kingsford-Adaboh R. Crystal structure and in vitro antimicrobial activity studies of Robustic acid and other Alpinumisoflavones isolated from Millettia thonningii. Z KRIST-CRYST MATER 2019. [DOI: 10.1515/zkri-2018-2052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
We report a systematic study of the antibacterial inhibitory potential of isoflavone natural products isolated from the seeds extracts of Millettia thonningii. In an effort to gain bond topological information which may have consequences for the observed bioactivities, the crystal structure of robustic acid was solved and refined using the independent atom as well as the invariom model, and the structures were compared. Robustic acid contains a fused tricyclic unit with a benzopyran moiety, with a phenylene ring substitution on the coumarin ring similar to the alpinumisoflavones isolated from this plant. At a minimum inhibitory concentration of ~1 mg/mL, alpinumisoflavone and robustic acid were found to be cytotoxic to Staphylococcus aureus (ATCC 25923) showing a zone of inhibition (ZOI) of ~9 mm. On the other hand, at ~2 mg/mL, these compounds were found to be bacteriostatic to a hospital isolate of Salmonella typhi with about 7 mm ZOI. Taken together, these compounds offer potential new avenues for targeting both Gram positive and negative bacteria and could be useful as chemical probes for understanding these pathogens in an effort to overcome drug resistance.
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Affiliation(s)
- Jerry Joe E.K. Harrison
- Department of Chemistry , College of Basic and Applied Sciences, University of Ghana , Box LG56 Legon, Accra , Ghana
| | - Moscoh Daniel Ayine-Tora
- Department of Chemistry , College of Basic and Applied Sciences, University of Ghana , Box LG56 Legon, Accra , Ghana
| | - Benjamin Appiagyei
- Department of Chemistry , College of Basic and Applied Sciences, University of Ghana , Box LG56 Legon, Accra , Ghana
| | - Felix C. Mills-Robertson
- Department of Biochemistry and Biotechnology , Kwame Nkrumah University of Science and Technology , Kumasi , Ghana
| | - William A. Asomaning
- Department of Chemistry , College of Basic and Applied Sciences, University of Ghana , Box LG56 Legon, Accra , Ghana
| | - Daniel G. Achel
- Applied Radiation Biology Centre, Radiological and Medical Sciences Research Institute, Ghana Atomic Energy Commission , Legon , Ghana
| | - Hiroyuki Ishida
- Department of Chemistry , Faculty of Science, Okayama University , Okayama 700 8530 , Japan
| | - Robert Kingsford-Adaboh
- Department of Chemistry , College of Basic and Applied Sciences, University of Ghana , Box LG56 Legon, Accra , Ghana
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Li PY, Liang YC, Sheu MJ, Huang SS, Chao CY, Kuo YH, Huang GJ. Alpinumisoflavone attenuates lipopolysaccharide-induced acute lung injury by regulating the effects of anti-oxidation and anti-inflammation both in vitro and in vivo. RSC Adv 2018; 8:31515-31528. [PMID: 35548248 PMCID: PMC9085634 DOI: 10.1039/c8ra04098b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 07/24/2018] [Indexed: 11/21/2022] Open
Abstract
Alpinumisoflavone (AIF) is a plant-derived pyranoisoflavone that exhibits a number of pharmacological activities, but the protective effects of AIF against pulmonary inflammation are still unknown. This study aimed to investigate the anti-inflammatory effects and possible molecular mechanisms of AIF in both lipopolysaccharide (LPS)-stimulated macrophages and mice. The results revealed that AIF dramatically suppressed the production of pro-inflammatory mediators [including tumor necrosis factor (TNF)-α, interleukin (IL)-6, IL-1β, IL-17, intercellular adhesion molecule-1 (ICAM-1), and nitric oxide (NO)] and increased the levels of anti-oxidative enzymes [including catalase (CAT), heme oxygenase-1 (HO-1), glutathione peroxidase (GPx), and superoxide dismutase (SOD)] both in vitro and in vivo. Additionally, pre-treatment with AIF could not only significantly prevent histopathological changes and neutrophil infiltration but also decreased the expression levels of nuclear factor-kappa B (NF-κB), mitogen-activated protein kinases (MAPKs), and the nucleotide-binding domain-like receptor protein 3 (NLRP3) inflammasome, as well as IL-17 production in LPS-induced lung tissues. The anti-inflammatory effects of AIF were mediated by up-regulating anti-oxidative enzymes and suppressing the NF-κB, MAPK, NLRP3 inflammasome and IL-17 signaling pathways. This is the first study to reveal that AIF has a protective effect against LPS-induced lung injury in mice.
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Affiliation(s)
- Pei-Ying Li
- School of Pharmacy, College of Pharmacy, China Medical University Taichung 40402 Taiwan
| | - Yu-Chia Liang
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, College of Chinese Medicine, China Medical University Taichung 40402 Taiwan +886-4-22053366 ext. 5508
| | - Ming-Jyh Sheu
- School of Pharmacy, College of Pharmacy, China Medical University Taichung 40402 Taiwan
| | - Shyh-Shyun Huang
- School of Pharmacy, College of Pharmacy, China Medical University Taichung 40402 Taiwan
| | - Che-Yi Chao
- Department of Food Nutrition and Health Biotechnology, Asia University Taichung 41354 Taiwan
| | - Yueh-Hsiung Kuo
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, College of Chinese Medicine, China Medical University Taichung 40402 Taiwan +886-4-22053366 ext. 5508
| | - Guan-Jhong Huang
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, College of Chinese Medicine, China Medical University Taichung 40402 Taiwan +886-4-22053366 ext. 5508
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Dittrich B, Schürmann C, Hübschle CB. Invariom modeling of disordered structures: case studies on a dipeptide, an amino acid, and cefaclor, a cephalosporin antibiotic. Z KRIST-CRYST MATER 2016. [DOI: 10.1515/zkri-2016-1955] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Routines to facilitate the treatment of disorder in invariom modeling have been implemented in the open-source program MolecoolQt, a visualization program for charge-density work, and InvariomTool, a pre-processor program. Two published structures of an amino acid and a dipeptide and the new structure of cefaclor, a cephalosporin antibiotic, provide examples with increasing amounts of disorder, which can now be successfully modeled with invarioms. Like for ordered structures, these non-spherical scattering factors predicted by density functional theory significantly improve the structural model (figures of merit and standard deviations) also in these cases. Furthermore, they allow rapid calculation and comparison of the electrostatic potential and the molecular dipole moment for the different conformers present in the crystal structures.
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Affiliation(s)
- Birger Dittrich
- Heinrich-Heine Universität Düsseldorf, Anorganische Chemie und Strukturchemie, Material- und Strukturforschung, Universitätsstraße, 1, D-40225 Düsseldorf, Germany , Tel.: +49-211-8113147
| | - Christian Schürmann
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstr., 4, D-37077 Göttingen, Germany
| | - Christian B. Hübschle
- University of Bayreuth, Lehrstuhl für Kristallographie, Universitätsstraße 30, D-95440 Bayreuth, Germany
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Ayine-Tora DM, Kingsford-Adaboh R, Asomaning WA, Harrison JJEK, Mills-Robertson FC, Bukari Y, Sakyi PO, Kaminta S, Reynisson J. Coumarin Antifungal Lead Compounds from Millettia thonningii and Their Predicted Mechanism of Action. Molecules 2016; 21:molecules21101369. [PMID: 27754464 PMCID: PMC6274499 DOI: 10.3390/molecules21101369] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 10/05/2016] [Accepted: 10/07/2016] [Indexed: 11/22/2022] Open
Abstract
Fungal pathogens continue to pose challenges to humans and plants despite efforts to control them. Two coumarins, robustic acid and thonningine-C isolated from Millettia thonningii, show promising activity against the fungus Candida albicans with minimum fungicidal concentration of 1.0 and 0.5 mg/mL, respectively. Molecular modelling against the putative bio-molecular target, lanosterol 14α-demethylase (CYP51), revealed a plausible binding mode for the active compounds, in which the hydroxyl group binds with a methionine backbone carboxylic group blocking access to the iron catalytic site. This binding disrupts the synthesis of several important sterols for the survival of fungi.
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Affiliation(s)
- Daniel M Ayine-Tora
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, 1142 Auckland, New Zealand.
- Department of Chemistry, University of Ghana, LG 56, Legon-Accra, Ghana.
| | | | | | | | - Felix C Mills-Robertson
- Department of Biochemistry and Biotechnology, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| | - Yahaya Bukari
- Botany Department, University of Ghana, LG 55, Legon-Accra, Ghana.
| | - Patrick O Sakyi
- Department of Chemistry, University of Ghana, LG 56, Legon-Accra, Ghana.
| | | | - Jóhannes Reynisson
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, 1142 Auckland, New Zealand.
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Dittrich B, Hübschle CB, Pröpper K, Dietrich F, Stolper T, Holstein J. The generalized invariom database (GID). Acta Crystallogr B Struct Sci Cryst Eng Mater 2013. [DOI: 10.1107/s0108768113002280] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Luger P, Weber M, Hübschle C, Tacke R. Electron densities of bexarotene and disila-bexarotene from invariom application: a comparative study. Org Biomol Chem 2013; 11:2348-54. [DOI: 10.1039/c3ob27346f] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Liu Y, Veena CK, Morgan JB, Mohammed KA, Jekabsons MB, Nagle DG, Zhou YD. Methylalpinumisoflavone inhibits hypoxia-inducible factor-1 (HIF-1) activation by simultaneously targeting multiple pathways. J Biol Chem 2008; 284:5859-68. [PMID: 19091749 DOI: 10.1074/jbc.m806744200] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Hypoxia is a common feature of solid tumors, and the extent of tumor hypoxia correlates with advanced disease stages and treatment resistance. The transcription factor hypoxia-inducible factor-1 (HIF-1) represents an important tumor-selective molecular target for anticancer drug discovery directed at tumor hypoxia. A natural product chemistry-based approach was employed to discover small molecule inhibitors of HIF-1. Bioassay-guided isolation of an active lipid extract of the tropical legumaceous plant Lonchocarpus glabrescens and structure elucidation afforded two new HIF-1 inhibitors: alpinumisoflavone (compound 1) and 4'-O-methylalpinumisoflavone (compound 2). In human breast tumor T47D cells, compounds 1 and 2 inhibited hypoxia-induced HIF-1 activation with IC(50) values of 5 and 0.6 mum, respectively. At the concentrations that in hibited HIF-1 activation, compound 2 inhibited hypoxic induction of HIF-1 target genes (CDKN1A, GLUT-1, and VEGF), tumor angiogenesis in vitro, cell migration, and chemotaxis. Compound 2 inhibits HIF-1 activation by blocking the induction of nuclear HIF-1alpha protein, the oxygen-regulated subunit that controls HIF-1 activity. Mechanistic studies indicate that, unlike rotenone and other mitochondrial inhibitors, compound 2 represents the first small molecule that inhibits HIF-1 activation by simultaneously suppressing mitochondrial respiration and disrupting protein translation in vitro. This unique mechanism distinguishes compound 2 from other small molecule HIF-1 inhibitors that are simple mitochondrial inhibitors or flavanoid-based protein kinase inhibitors.
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Affiliation(s)
- Yang Liu
- Department of Pharmacognosy and Research Institute of Pharmaceutical Sciences, School of Pharmacy, and Department of Biology, University of Mississippi, University, Mississippi 38677, USA
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Abstract
The understanding of mutual recognition of biologically interacting systems on an atomic scale is of paramount importance in the life sciences. Electron density distributions that can be obtained from a high resolution X-ray diffraction experiment can provide--in addition to steric information--electronic properties of the species involved in these interactions. In recent years experimental ED methods have seen several favourable developments towards successful application in the life sciences. Experimental and methodological advances have made possible on the one hand high-speed X-ray diffraction experiments, and have allowed on the other hand the quantitative derivation of bonding, non-bonding and atomic electronic properties. This has made the investigation of a large number of molecules possible, and moreover, molecules with 200 or more atoms can be subject of experimental ED studies, as has been demonstrated by the example of vitamin B12. Supported by the experimentally verified transferability concept of submolecular electronic properties, a key issue in Bader's The Quantum Theory of Atoms in Molecules, activities have emerged to establish databases for the additive generation of electron densities of macromolecules from submolecular building blocks. It follows that the major aims of any experimental electron density work in the life sciences, namely the generation of electronic information for a series of molecules in a reasonable time and the study of biological macromolecules (proteins, polynucleotides), are within reach in the near future.
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Affiliation(s)
- Peter Luger
- Institute for Chemistry and Biochemistry/Crystallography, Free University of Berlin, Fabeckstr. 36a, 14 195, Berlin, Germany.
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