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Baranovsky A, Ladyko A, Shkel T, Sokolov S, Strushkevich N, Gilep A. Transformations, NMR studies and biological testing of some 17β-isoxazolyl steroids and their heterocyclic ring cleavage derivatives. Steroids 2021; 166:108768. [PMID: 33232722 DOI: 10.1016/j.steroids.2020.108768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 10/22/2020] [Accepted: 11/09/2020] [Indexed: 11/19/2022]
Abstract
The synthesis and NMR structure analysis of a group of oxygenated steroids containing isoxazole, dihydrofuran, tetrahydrofuran rings or enamino carbonyl fragment in the side chain have been fulfilled. The prepared compounds were tested toward several enzymes (human cytochrome P450s CYP17, CYP19, CYP51 and CYP51 of pathogenic fungus Candida glabrata) as their potential inhibitors. A number steroids show a high level affinity (micro- and submicromole) for the enzyme-ligand complexes of the tested compounds with human CYP51, CYP19 and CYP51 of C. glabrata.
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Affiliation(s)
- Alexander Baranovsky
- Institute of Bioorganic Chemistry of the National Academy of Sciences of Belarus, Kuprevich Str. 5/2, 220143 Minsk, Belarus.
| | - Alesya Ladyko
- Institute of Bioorganic Chemistry of the National Academy of Sciences of Belarus, Kuprevich Str. 5/2, 220143 Minsk, Belarus
| | - Tatsiana Shkel
- Institute of Bioorganic Chemistry of the National Academy of Sciences of Belarus, Kuprevich Str. 5/2, 220143 Minsk, Belarus
| | - Sergey Sokolov
- Institute of Bioorganic Chemistry of the National Academy of Sciences of Belarus, Kuprevich Str. 5/2, 220143 Minsk, Belarus
| | - Natallia Strushkevich
- Skolkovo Institute of Science and Technology, Bol'shoy Bul'var, 30, 143026 Moscow, Russia
| | - Andrey Gilep
- Institute of Bioorganic Chemistry of the National Academy of Sciences of Belarus, Kuprevich Str. 5/2, 220143 Minsk, Belarus
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Whitmore H, Sishtla K, Knirsch W, Andriantiana JL, Schwikkard S, Mas-Claret E, Nassief SM, Isyaka SM, Corson TW, Mulholland DA. Bufadienolides and anti-angiogenic homoisoflavonoids from Rhodocodon cryptopodus, Rhodocodon rotundus and Rhodocodon cyathiformis. Fitoterapia 2020; 141:104479. [PMID: 31927011 PMCID: PMC7065379 DOI: 10.1016/j.fitote.2020.104479] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 01/07/2020] [Accepted: 01/08/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Homoisoflavonoids have been shown to have potent anti-proliferative activities in endothelial cells over other cell types and have demonstrated a strong antiangiogenic potential in vitro and in vivo in animal models of ocular neovascularization. Three species of Rhodocodon (Scilloideaea subfamily of the Asparagaceae family), endemic to Madagascar, R. cryptopodus, R. rotundus and R. cyathiformis, were investigated. PURPOSE To isolate and test homoisoflavonoids for their antiangiogenic activity against human retinal microvascular endothelial cells (HRECs), as well as specificity against other ocular cell lines. METHODS Plant material was extracted at room temperature with EtOH. Compounds were isolated using flash column chromatography and were identified using NMR and CD spectroscopy and HRESIMS. Compounds were tested for antiproliferative effects on primary human microvascular retinal endothelial cells (HRECs), ARPE19 retinal pigment epithelial cells, 92-1 uveal melanoma cells, and Y79 retinoblastoma cells. HRECs exposed to compounds were also tested for migration and tube formation ability. RESULTS Two homoisoflavonoids, 3S-5,7-dihydroxy-(3'-hydroxy-4'-methoxybenzyl)-4-chromanone (1) and 3S-5,7-dihydroxy-(4'-hydroxy-3'-methoxybenzyl)-4-chromanone (2), were isolated along with four bufadienolides. Compound 1 was found to be non-specifically antiproliferative, with GI50 values ranging from 0.21-0.85 μM across the four cell types, while compound 2 showed at least 100-fold specificity for HRECs over the other tested cell lines. Compound 1, with a 3S configuration, was 700 times more potent that the corresponding 3R enantiomer recently isolated from a Massonia species. CONCLUSION Select homoisoflavonoids have promise as antiangiogenic agents that are not generally cytotoxic.
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Affiliation(s)
- Hannah Whitmore
- Natural Products Research Group, Department of Chemistry, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - Kamakshi Sishtla
- Eugene and Marilyn Glick Eye Institute, Department of Ophthalmology, Indiana University School of Medicine, 1160 W. Michigan St., Indianapolis, IN 46202, USA
| | - Walter Knirsch
- Institute of Plant Sciences, NAWI Graz, Karl-Franzens University Graz, Holteigasse 6, A-8010 Graz, Austria
| | - Jacky L Andriantiana
- Parc Botanique et Zoologique de Tsimbazaza, Rue Fernand Kassanga, Antananarivo 101, Madagascar
| | - Sianne Schwikkard
- School of Life Sciences, Pharmacy and Chemistry, Kingston University, Kingston-upon-Thames KT1 2EE, United Kingdom
| | - Eduard Mas-Claret
- Natural Products Research Group, Department of Chemistry, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - Sarah M Nassief
- Natural Products Research Group, Department of Chemistry, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - Sani M Isyaka
- Natural Products Research Group, Department of Chemistry, University of Surrey, Guildford GU2 7XH, United Kingdom; School of Chemistry and Physics, University of KwaZulu-Natal, Durban, South Africa
| | - Timothy W Corson
- Eugene and Marilyn Glick Eye Institute, Department of Ophthalmology, Indiana University School of Medicine, 1160 W. Michigan St., Indianapolis, IN 46202, USA.
| | - Dulcie A Mulholland
- Natural Products Research Group, Department of Chemistry, University of Surrey, Guildford GU2 7XH, United Kingdom; School of Chemistry and Physics, University of KwaZulu-Natal, Durban, South Africa.
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4
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Schwikkard S, Whitmore H, Sishtla K, Sulaiman RS, Shetty T, Basavarajappa HD, Waller C, Alqahtani A, Frankemoelle L, Chapman A, Crouch N, Wetschnig W, Knirsch W, Andriantiana J, Mas-Claret E, Langat MK, Mulholland D, Corson TW. The Antiangiogenic Activity of Naturally Occurring and Synthetic Homoisoflavonoids from the Hyacinthaceae ( sensu APGII). JOURNAL OF NATURAL PRODUCTS 2019; 82:1227-1239. [PMID: 30951308 PMCID: PMC6771261 DOI: 10.1021/acs.jnatprod.8b00989] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Excessive blood vessel formation in the eye is implicated in wet age-related macular degeneration, proliferative diabetic retinopathy, neovascular glaucoma, and retinopathy of prematurity, which are major causes of blindness. Small molecule antiangiogenic drugs are strongly needed to supplement existing biologics. Homoisoflavonoids have been previously shown to have potent antiproliferative activities in endothelial cells over other cell types. Moreover, they demonstrated a strong antiangiogenic potential in vitro and in vivo in animal models of ocular neovascularization. Here, we tested the antiangiogenic activity of a group of naturally occurring homoisoflavonoids isolated from the family Hyacinthaceae and related synthetic compounds, chosen for synthesis based on structure-activity relationship observations. Several compounds showed interesting antiproliferative and antiangiogenic activities in vitro on retinal microvascular endothelial cells, a disease-relevant cell type, with the synthetic chromane, 46, showing the best activity (GI50 of 2.3 × 10-4 μM).
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Affiliation(s)
- Sianne Schwikkard
- School of Life Sciences, Pharmacy and Chemistry,
Kingston University, Kingston-upon-Thames, KT1 2EE, UK
- Natural Products Research Group, Department of
Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey,
Guildford, GU2 7XH, United Kingdom
| | - Hannah Whitmore
- Natural Products Research Group, Department of
Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey,
Guildford, GU2 7XH, United Kingdom
| | - Kamakshi Sishtla
- Eugene and Marilyn Glick Eye Institute, Department
of Ophthalmology, Indiana University School of Medicine, 1160 W. Michigan St.,
Indianapolis, IN 46202, U.S.A
| | - Rania S. Sulaiman
- Eugene and Marilyn Glick Eye Institute, Department
of Ophthalmology, Indiana University School of Medicine, 1160 W. Michigan St.,
Indianapolis, IN 46202, U.S.A
- Department of Pharmacology and Toxicology,
Indiana University School of Medicine, 1160 W. Michigan St., Indianapolis, IN 46202,
U.S.A
- Department of Biochemistry, Faculty of Pharmacy,
Cairo University, Cairo, Egypt
| | - Trupti Shetty
- Eugene and Marilyn Glick Eye Institute, Department
of Ophthalmology, Indiana University School of Medicine, 1160 W. Michigan St.,
Indianapolis, IN 46202, U.S.A
- Department of Pharmacology and Toxicology,
Indiana University School of Medicine, 1160 W. Michigan St., Indianapolis, IN 46202,
U.S.A
| | - Halesha D. Basavarajappa
- Eugene and Marilyn Glick Eye Institute, Department
of Ophthalmology, Indiana University School of Medicine, 1160 W. Michigan St.,
Indianapolis, IN 46202, U.S.A
- Department of Biochemistry and
Molecular Biology, Indiana University School of Medicine, 1160 W. Michigan St.,
Indianapolis, IN 46202, U.S.A
| | - Catherine Waller
- Natural Products Research Group, Department of
Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey,
Guildford, GU2 7XH, United Kingdom
| | - Alaa Alqahtani
- Natural Products Research Group, Department of
Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey,
Guildford, GU2 7XH, United Kingdom
| | - Lennart Frankemoelle
- School of Life Sciences, Pharmacy and Chemistry,
Kingston University, Kingston-upon-Thames, KT1 2EE, UK
| | - Andy Chapman
- School of Life Sciences, Pharmacy and Chemistry,
Kingston University, Kingston-upon-Thames, KT1 2EE, UK
| | - Neil Crouch
- Biodiversity Economy, South African National
Biodiversity Institute, P.O. Box 52099, 4007 Berea Road, Durban, South Africa
- School of Chemistry and Physics, University of
KwaZulu-Natal, Durban, 4041, South Africa
| | | | - Walter Knirsch
- Institute of Biology, NAWI Graz, University of Graz,
8010 Graz, Austria
| | - Jacky Andriantiana
- Parc Botanique et Zoologique de Tsimbazaza, Rue
Fernand Kassanga, Antananarivo 101, Madagascar
| | - Eduard Mas-Claret
- Natural Products Research Group, Department of
Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey,
Guildford, GU2 7XH, United Kingdom
| | - Moses K Langat
- Natural Products Research Group, Department of
Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey,
Guildford, GU2 7XH, United Kingdom
- School of Chemistry and Physics, University of
KwaZulu-Natal, Durban, 4041, South Africa
| | - Dulcie Mulholland
- Natural Products Research Group, Department of
Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey,
Guildford, GU2 7XH, United Kingdom
- School of Chemistry and Physics, University of
KwaZulu-Natal, Durban, 4041, South Africa
| | - Timothy W. Corson
- Eugene and Marilyn Glick Eye Institute, Department
of Ophthalmology, Indiana University School of Medicine, 1160 W. Michigan St.,
Indianapolis, IN 46202, U.S.A
- Department of Pharmacology and Toxicology,
Indiana University School of Medicine, 1160 W. Michigan St., Indianapolis, IN 46202,
U.S.A
- Department of Biochemistry and
Molecular Biology, Indiana University School of Medicine, 1160 W. Michigan St.,
Indianapolis, IN 46202, U.S.A
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