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Ramage KS, Lock A, White JM, Ekins MG, Kiefel MJ, Avery VM, Davis RA. Semisynthesis and Cytotoxic Evaluation of an Ether Analogue Library Based on a Polyhalogenated Diphenyl Ether Scaffold Isolated from a Lamellodysidea Sponge. Mar Drugs 2024; 22:33. [PMID: 38248658 PMCID: PMC10817568 DOI: 10.3390/md22010033] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 12/20/2023] [Accepted: 12/23/2023] [Indexed: 01/23/2024] Open
Abstract
The known oxygenated polyhalogenated diphenyl ether, 2-(2',4'-dibromophenoxy)-3,5-dibromophenol (1), with previously reported activity in multiple cytotoxicity assays was isolated from the sponge Lamellodysidea sp. and proved to be an amenable scaffold for semisynthetic library generation. The phenol group of 1 was targeted to generate 12 ether analogues in low-to-excellent yields, and the new library was fully characterized by NMR, UV, and MS analyses. The chemical structures for 2, 8, and 9 were additionally determined via single-crystal X-ray diffraction analysis. All natural and semisynthetic compounds were evaluated for their ability to inhibit the growth of DU145, LNCaP, MCF-7, and MDA-MB-231 cancer cell lines. Compound 3 was shown to have near-equivalent activity compared to scaffold 1 in two in vitro assays, and the activity of the compounds with an additional benzyl ring appeared to be reliant on the presence and position of additional halogens.
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Affiliation(s)
- Kelsey S. Ramage
- Griffith Institute for Drug Discovery, School of Environment and Science, Griffith University, Brisbane, QLD 4111, Australia; (K.S.R.); (M.G.E.)
| | - Aaron Lock
- Discovery Biology, School of Environment and Science, Griffith University, Brisbane, QLD 4111, Australia; (A.L.); (V.M.A.)
| | - Jonathan M. White
- School of Chemistry and Bio21 Institute, The University of Melbourne, Parkville, VIC 3010, Australia;
| | - Merrick G. Ekins
- Griffith Institute for Drug Discovery, School of Environment and Science, Griffith University, Brisbane, QLD 4111, Australia; (K.S.R.); (M.G.E.)
- Queensland Museum, South Brisbane, QLD 4101, Australia
| | - Milton J. Kiefel
- Institute for Glycomics, School of Environment and Science, Griffith University, Gold Coast, QLD 4222, Australia;
| | - Vicky M. Avery
- Discovery Biology, School of Environment and Science, Griffith University, Brisbane, QLD 4111, Australia; (A.L.); (V.M.A.)
| | - Rohan A. Davis
- Griffith Institute for Drug Discovery, School of Environment and Science, Griffith University, Brisbane, QLD 4111, Australia; (K.S.R.); (M.G.E.)
- NatureBank, Griffith Institute for Drug Discovery, Griffith University, Nathan, QLD 4111, Australia
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Ramage KS, Taki AC, Lum KY, Hayes S, Byrne JJ, Wang T, Hofmann A, Ekins MG, White JM, Jabbar A, Davis RA, Gasser RB. Dysidenin from the Marine Sponge Citronia sp. Affects the Motility and Morphology of Haemonchus contortus Larvae In Vitro. Mar Drugs 2021; 19:md19120698. [PMID: 34940697 PMCID: PMC8708643 DOI: 10.3390/md19120698] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 11/05/2021] [Revised: 11/25/2021] [Accepted: 12/02/2021] [Indexed: 01/05/2023] Open
Abstract
High-throughput screening of the NatureBank marine extract library (n = 7616) using a phenotypic assay for the parasitic nematode Haemonchus contortus identified an active extract derived from the Australian marine sponge Citronia sp. Bioassay-guided fractionation of the CH2Cl2/MeOH extract from Citronia sp. resulted in the purification of two known hexachlorinated peptides, dysidenin (1) and dysideathiazole (2). Compound 1 inhibited the growth/development of H. contortus larvae and induced multiple phenotypic changes, including a lethal evisceration (Evi) phenotype and/or somatic cell and tissue destruction. This is the first report of anthelmintic activity for these rare and unique polychlorinated peptides.
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Affiliation(s)
- Kelsey S. Ramage
- Griffith Institute for Drug Discovery, School of Environment and Science, Griffith University, Brisbane, QLD 4111, Australia; (K.S.R.); (K.Y.L.); (S.H.); (M.G.E.)
| | - Aya C. Taki
- Department of Veterinary Biosciences, Faculty of Veterinary and Agricultural Sciences, Melbourne Veterinary School, The University of Melbourne, Parkville, VIC 3010, Australia; (A.C.T.); (J.J.B.); (T.W.); (A.H.); (A.J.)
| | - Kah Yean Lum
- Griffith Institute for Drug Discovery, School of Environment and Science, Griffith University, Brisbane, QLD 4111, Australia; (K.S.R.); (K.Y.L.); (S.H.); (M.G.E.)
| | - Sasha Hayes
- Griffith Institute for Drug Discovery, School of Environment and Science, Griffith University, Brisbane, QLD 4111, Australia; (K.S.R.); (K.Y.L.); (S.H.); (M.G.E.)
| | - Joseph J. Byrne
- Department of Veterinary Biosciences, Faculty of Veterinary and Agricultural Sciences, Melbourne Veterinary School, The University of Melbourne, Parkville, VIC 3010, Australia; (A.C.T.); (J.J.B.); (T.W.); (A.H.); (A.J.)
| | - Tao Wang
- Department of Veterinary Biosciences, Faculty of Veterinary and Agricultural Sciences, Melbourne Veterinary School, The University of Melbourne, Parkville, VIC 3010, Australia; (A.C.T.); (J.J.B.); (T.W.); (A.H.); (A.J.)
| | - Andreas Hofmann
- Department of Veterinary Biosciences, Faculty of Veterinary and Agricultural Sciences, Melbourne Veterinary School, The University of Melbourne, Parkville, VIC 3010, Australia; (A.C.T.); (J.J.B.); (T.W.); (A.H.); (A.J.)
- Max Rubner-Institut, Federal Research Institute of Nutrition and Food, 95326 Kulmbach, Germany
| | - Merrick G. Ekins
- Griffith Institute for Drug Discovery, School of Environment and Science, Griffith University, Brisbane, QLD 4111, Australia; (K.S.R.); (K.Y.L.); (S.H.); (M.G.E.)
- Queensland Museum, South Brisbane, QLD 4101, Australia
| | - Jonathan M. White
- School of Chemistry and Bio21 Institute, The University of Melbourne, Parkville, VIC 3010, Australia;
| | - Abdul Jabbar
- Department of Veterinary Biosciences, Faculty of Veterinary and Agricultural Sciences, Melbourne Veterinary School, The University of Melbourne, Parkville, VIC 3010, Australia; (A.C.T.); (J.J.B.); (T.W.); (A.H.); (A.J.)
| | - Rohan A. Davis
- Griffith Institute for Drug Discovery, School of Environment and Science, Griffith University, Brisbane, QLD 4111, Australia; (K.S.R.); (K.Y.L.); (S.H.); (M.G.E.)
- Correspondence: (R.A.D.); (R.B.G.)
| | - Robin B. Gasser
- Department of Veterinary Biosciences, Faculty of Veterinary and Agricultural Sciences, Melbourne Veterinary School, The University of Melbourne, Parkville, VIC 3010, Australia; (A.C.T.); (J.J.B.); (T.W.); (A.H.); (A.J.)
- Correspondence: (R.A.D.); (R.B.G.)
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Taki AC, Byrne JJ, Jabbar A, Lum KY, Hayes S, Addison RS, Ramage KS, Hofmann A, Ekins MG, Wang T, Chang BCH, Davis RA, Gasser RB. High Throughput Screening of the NatureBank 'Marine Collection' in a Haemonchus Bioassay Identifies Anthelmintic Activity in Extracts from a Range of Sponges from Australian Waters. Molecules 2021; 26:5846. [PMID: 34641389 PMCID: PMC8512444 DOI: 10.3390/molecules26195846] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 09/21/2021] [Accepted: 09/23/2021] [Indexed: 12/04/2022] Open
Abstract
Widespread resistance in parasitic nematodes to most classes of anthelmintic drugs demands the discovery and development of novel compounds with distinct mechanisms of action to complement strategic or integrated parasite control programs. Products from nature-which assume a diverse 'chemical space'-have significant potential as a source of anthelmintic compounds. In the present study, we screened a collection of extracts (n = 7616) derived from marine invertebrates sampled from Australian waters in a high throughput bioassay for in vitro anti-parasitic activity against the barber's pole worm (Haemonchus contortus)-an economically important parasitic nematode of livestock animals. In this high throughput screen (HTS), we identified 58 active extracts that reduced larval motility by ≥70% (at 90 h), equating to an overall 'hit rate' of ~0.8%. Of these 58 extracts, 16 also inhibited larval development by ≥80% (at 168 h) and/or induced 'non-wild-type' (abnormal) larval phenotypes with reference to 'wild-type' (normal) larvae not exposed to extract (negative controls). Most active extracts (54 of 58) originated from sponges, three from chordates (tunicates) and one from a coral; these extracts represented 37 distinct species/taxa of 23 families. An analysis of samples by 1H NMR fingerprinting was utilised to dereplicate hits and to prioritise a set of 29 sponge samples for future chemical investigation. Overall, these results indicate that a range of sponge species from Australian waters represents a rich source of natural compounds with nematocidal or nematostatic properties. Our plan now is to focus on in-depth chemical investigations of the sample set prioritised herein.
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Affiliation(s)
- Aya C. Taki
- Department of Veterinary Biosciences, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC 3010, Australia; (A.C.T.); (J.J.B.); (A.J.); (A.H.); (T.W.); (B.C.H.C.)
| | - Joseph J. Byrne
- Department of Veterinary Biosciences, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC 3010, Australia; (A.C.T.); (J.J.B.); (A.J.); (A.H.); (T.W.); (B.C.H.C.)
| | - Abdul Jabbar
- Department of Veterinary Biosciences, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC 3010, Australia; (A.C.T.); (J.J.B.); (A.J.); (A.H.); (T.W.); (B.C.H.C.)
| | - Kah Yean Lum
- Griffith Institute for Drug Discovery, School of Environment and Science, Griffith University, Brisbane, QLD 4111, Australia; (K.Y.L.); (S.H.); (R.S.A.); (K.S.R.); (M.G.E.); (R.A.D.)
| | - Sasha Hayes
- Griffith Institute for Drug Discovery, School of Environment and Science, Griffith University, Brisbane, QLD 4111, Australia; (K.Y.L.); (S.H.); (R.S.A.); (K.S.R.); (M.G.E.); (R.A.D.)
| | - Russell S. Addison
- Griffith Institute for Drug Discovery, School of Environment and Science, Griffith University, Brisbane, QLD 4111, Australia; (K.Y.L.); (S.H.); (R.S.A.); (K.S.R.); (M.G.E.); (R.A.D.)
| | - Kelsey S. Ramage
- Griffith Institute for Drug Discovery, School of Environment and Science, Griffith University, Brisbane, QLD 4111, Australia; (K.Y.L.); (S.H.); (R.S.A.); (K.S.R.); (M.G.E.); (R.A.D.)
| | - Andreas Hofmann
- Department of Veterinary Biosciences, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC 3010, Australia; (A.C.T.); (J.J.B.); (A.J.); (A.H.); (T.W.); (B.C.H.C.)
| | - Merrick G. Ekins
- Griffith Institute for Drug Discovery, School of Environment and Science, Griffith University, Brisbane, QLD 4111, Australia; (K.Y.L.); (S.H.); (R.S.A.); (K.S.R.); (M.G.E.); (R.A.D.)
- Queensland Museum, South Brisbane, QLD 4101, Australia
| | - Tao Wang
- Department of Veterinary Biosciences, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC 3010, Australia; (A.C.T.); (J.J.B.); (A.J.); (A.H.); (T.W.); (B.C.H.C.)
| | - Bill C. H. Chang
- Department of Veterinary Biosciences, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC 3010, Australia; (A.C.T.); (J.J.B.); (A.J.); (A.H.); (T.W.); (B.C.H.C.)
| | - Rohan A. Davis
- Griffith Institute for Drug Discovery, School of Environment and Science, Griffith University, Brisbane, QLD 4111, Australia; (K.Y.L.); (S.H.); (R.S.A.); (K.S.R.); (M.G.E.); (R.A.D.)
| | - Robin B. Gasser
- Department of Veterinary Biosciences, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC 3010, Australia; (A.C.T.); (J.J.B.); (A.J.); (A.H.); (T.W.); (B.C.H.C.)
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