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Risi G, Liu M, Vairoletti F, Quinn RJ, Salinas G. A Screening of 10,240 NatureBank Fractions Identifies Nematicidal Activity in Agelasine-Containing Extracts from Sponges. JOURNAL OF NATURAL PRODUCTS 2024; 87:1532-1539. [PMID: 38853528 DOI: 10.1021/acs.jnatprod.3c01212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
Nematode infections affect a fifth of the human population, livestock, and crops worldwide, imposing a burden to global public health and economies, particularly in developing nations. Resistance to commercial anthelmintics has increased over the years in livestock infections and driven the pursuit for new drugs. We herein present a rapid, cost-effective, and automated assay for nematicide discovery using the free-living nematode Caenorhabditis elegans to screen a highly diverse natural product library enriched in bioactive molecules. Screening of 10,240 fractions obtained from extracts of various biological sources allowed the identification of 7 promising hit fractions, all from marine sponges. These fractions were further assayed for nematicidal activity against the sheep nematode parasite Haemonchus contortus and for innocuity in zebrafish. The most active extracts against parasites and innocuous toward vertebrates belong to two chemotypes. High-performance liquid chromatography (HPLC) coupled with nuclear magnetic resonance (NMR) revealed that the most abundant compound in one chemotype is halaminol A, an aminoalcohol previously identified in a small screen against H. contortus. Terpene-nucleotide hybrids known as agelasines predominate in the other chemotype. This study reinforces the power of C. elegans for nematicide discovery from large collections and the potential of the chemical diversity derived from marine invertebrate biota.
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Affiliation(s)
- Gastón Risi
- Worm Biology Lab, Institut Pasteur de Montevideo, 11400 Montevideo, Uruguay
| | - Miaomiao Liu
- Griffith Institute for Drug Discovery, Griffith University, Brisbane, Queensland 4101, Australia
| | - Franco Vairoletti
- Worm Biology Lab, Institut Pasteur de Montevideo, 11400 Montevideo, Uruguay
- Laboratorio de Química Farmacéutica, Departamento de Química Orgánica, Facultad de Química, Universidad de la República, 11200 Montevideo, Uruguay
| | - Ronald J Quinn
- Griffith Institute for Drug Discovery, Griffith University, Brisbane, Queensland 4101, Australia
| | - Gustavo Salinas
- Worm Biology Lab, Institut Pasteur de Montevideo, 11400 Montevideo, Uruguay
- Departamento de Biociencias, Facultad de Química, Universidad de la República, 11200 Montevideo, Uruguay
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Kamal M, Mukherjee S, Joshi B, Sindhu ZUD, Wangchuk P, Haider S, Ahmed N, Talukder MH, Geary TG, Yadav AK. Model nematodes as a practical innovation to promote high throughput screening of natural products for anthelmintics discovery in South Asia: Current challenges, proposed practical and conceptual solutions. Mol Biochem Parasitol 2023; 256:111594. [PMID: 37730126 DOI: 10.1016/j.molbiopara.2023.111594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 08/27/2023] [Accepted: 09/12/2023] [Indexed: 09/22/2023]
Abstract
With the increasing prevalence of anthelmintic resistance in animals recorded globally, and the threat of resistance in human helminths, the need for novel anthelmintic drugs is greater than ever. Most research aimed at discovering novel anthelmintic leads relies on high throughput screening (HTS) of large libraries of synthetic small molecules in industrial and academic settings in developed countries, even though it is the tropical countries that are most plagued by helminth infections. Tropical countries, however, have the advantage of possessing a rich flora that may yield natural products (NP) with promising anthelmintic activity. Focusing on South Asia, which produces one of the world's highest research outputs in NP and NP-based anthelmintic discovery, we find that limited basic research and funding, a lack of awareness of the utility of model organisms, poor industry-academia partnerships and lack of technological innovations greatly limit anthelmintics research in the region. Here we propose that utilizing model organisms including the free-living nematode Caenorhabditis elegans, that can potentially allow rapid target identification of novel anthelmintics, and Oscheius tipulae, a closely related, free-living nematode which is found abundantly in soil in hotter temperatures, could be a much-needed innovation that can enable cost-effective and efficient HTS of NPs for discovering compounds with anthelmintic/antiparasitic potential in South Asia and other tropical regions that historically have devoted limited funding for such research. Additionally, increased collaborations at the national, regional and international level between parasitologists and pharmacologists/ethnobotanists, setting up government-industry-academia partnerships to fund academic research, creating a centralized, regional collection of plant extracts or purified NPs as a dereplication strategy and HTS library, and holding regional C. elegans/O. tipulae-based anthelmintics workshops and conferences to share knowledge and resources regarding model organisms may collectively promote and foster a NP-based anthelmintics landscape in South Asia and beyond.
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Affiliation(s)
- Muntasir Kamal
- Department of Molecular Genetics, University of Toronto, Toronto, Canada.
| | - Suprabhat Mukherjee
- Department of Animal Science, Kazi Nazrul University, Asansol 713340, West Bengal, India
| | - Bishnu Joshi
- Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, TX, USA
| | - Zia-Ud-Din Sindhu
- Department of Parasitology, University of Agriculture Faisalabad, Pakistan
| | - Phurpa Wangchuk
- Australian Institute of Tropical Health and Medicine, James Cook University, Cairns Campus, QLD 4878, Australia
| | | | - Nurnabi Ahmed
- Department of Parasitology, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | | | - Timothy G Geary
- Institute of Parasitology, McGill University, Montreal, Canada; School of Biological Sciences, Queen's University-Belfast, Belfast, NI, UK
| | - Arun K Yadav
- Department of Zoology, North-Eastern Hill University, Shillong 793022, India
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Zhang C, Lum KY, Taki AC, Gasser RB, Byrne JJ, Montaner LJ, Tietjen I, Avery VM, Davis RA. Using a Bioactive Eremophila-Derived Serrulatane Scaffold to Generate a Unique Carbamate Library for Anti-infective Evaluations. JOURNAL OF NATURAL PRODUCTS 2023; 86:557-565. [PMID: 36799121 DOI: 10.1021/acs.jnatprod.2c01041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The known Eremophila microtheca-derived diterpenoid 3,7,8-trihydroxyserrulat-14-en-19-oic acid (1) was targeted for large-scale purification, as this bioactive plant compound has proven to be an attractive scaffold for semisynthetic studies and subsequent library generation. Compound 1 was converted to a selectively protected trimethyl derivative, 3-hydroxy-7,8-dimethoxyserrulat-14-en-19-oic acid methyl ester (2), using simple and rapid methylation conditions. The resulting scaffold 2 was reacted with a diverse series of commercially available isocyanates to generate an 11-membered carbamate-based library. The chemical structures of the 11 new semisynthetic analogues were fully characterized by spectroscopic and spectrometric analysis. All natural products and semisynthetic compounds were evaluated for their anthelmintic, antimalarial, and anti-HIV activities. Compound 3 was shown to elicit the greatest antiplasmodial activity of all compounds tested, with IC50 values of 4.6 and 11.6 μM against Plasmodium falciparum 3D7 and Dd2, respectively. Compound 11 showed the greatest inhibition of development to fourth-stage Haemonchus contortus larvae (L4) and induction of a skinny (Ski) phenotype (67.5% of nematodes) at 50 μM. Compound 7, which inhibited 59.0% of HIV production at 100 μg/mL, was the carbamate analogue that displayed the best antiviral activity.
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Affiliation(s)
- Chen Zhang
- Griffith Institute for Drug Discovery, School of Environment and Science, Griffith University, Brisbane, QLD 4111, Australia
| | - Kah Yean Lum
- Griffith Institute for Drug Discovery, School of Environment and Science, Griffith University, Brisbane, QLD 4111, Australia
| | - Aya C Taki
- Department of Veterinary Biosciences, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Robin B Gasser
- Department of Veterinary Biosciences, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Joseph J Byrne
- Department of Veterinary Biosciences, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Luis J Montaner
- The Wistar Institute, Philadelphia, Pennsylvania 19104, United States
| | - Ian Tietjen
- The Wistar Institute, Philadelphia, Pennsylvania 19104, United States
| | - Vicky M Avery
- Griffith Institute for Drug Discovery, School of Environment and Science, Griffith University, Brisbane, QLD 4111, Australia
| | - Rohan A Davis
- Griffith Institute for Drug Discovery, School of Environment and Science, Griffith University, Brisbane, QLD 4111, Australia
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Abstract
Covering: January to December 2021This review covers the literature published in 2021 for marine natural products (MNPs), with 736 citations (724 for the period January to December 2021) referring to compounds isolated from marine microorganisms and phytoplankton, green, brown and red algae, sponges, cnidarians, bryozoans, molluscs, tunicates, echinoderms, mangroves and other intertidal plants and microorganisms. The emphasis is on new compounds (1425 in 416 papers for 2021), together with the relevant biological activities, source organisms and country of origin. Pertinent reviews, biosynthetic studies, first syntheses, and syntheses that led to the revision of structures or stereochemistries, have been included. An analysis of the number of authors, their affiliations, domestic and international collection locations, focus of MNP studies, citation metrics and journal choices is discussed.
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Affiliation(s)
- Anthony R Carroll
- School of Environment and Science, Griffith University, Gold Coast, Australia. .,Griffith Institute for Drug Discovery, Griffith University, Brisbane, Australia
| | - Brent R Copp
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | - Rohan A Davis
- Griffith Institute for Drug Discovery, Griffith University, Brisbane, Australia.,School of Enivironment and Science, Griffith University, Brisbane, Australia
| | - Robert A Keyzers
- Centre for Biodiscovery, and School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington, New Zealand
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Hayes S, Taki AC, Lum KY, Byrne JJ, Ekins MG, Gasser RB, Davis RA. Using UHPLC-MS profiling for the discovery of new sponge-derived metabolites and anthelmintic screening of the NatureBank bromotyrosine library. Beilstein J Org Chem 2022; 18:1544-1552. [PMID: 36474969 PMCID: PMC9679598 DOI: 10.3762/bjoc.18.164] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 11/03/2022] [Indexed: 09/22/2023] Open
Abstract
In order to further expand the NatureBank open access compound library, chemical investigations of the Australian marine sponge, Ianthella basta, were undertaken since UHPLC-MS analysis of the extract from this sponge indicated the presence of a new alkaloid. Large-scale extraction and mass-directed isolation studies on the CH2Cl2/MeOH I. basta extract resulted in the purification of a new bromotyrosine-derived alkaloid, 5-debromopurealidin H (1), along with the known marine natural product, ianthesine E (2). The chemical structure of the new compound was determined following detailed spectroscopic and spectrometric data analysis. These two compounds (1 and 2) along with seven previously reported marine bromotyrosine alkaloids from the NatureBank open access library, which included psammaplysins F (3) and H (4), bastadins 4 (5), 8 (6) and 13 (7), aerothionin (8) and hexadellin A (9), were evaluated for their nematocidal activity against exsheathed third-stage larvae of Haemonchus contortus, a highly pathogenic parasite of ruminants. Of the nine compounds, bastadin 8 (6), hexadellin A (9) and bastadin 4 (5) showed inhibition towards larval motility after 72 h of exposure with IC50 values of 1.6 µM, 10.0 µM and 33.3 µM, respectively.
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Affiliation(s)
- Sasha Hayes
- Griffith Institute for Drug Discovery, Griffith University, Don Young Road, Brisbane, 4111, Australia
| | - Aya C Taki
- Department of Veterinary Biosciences, The University of Melbourne, Flemington Road, Parkville, 3010, Australia
| | - Kah Yean Lum
- Griffith Institute for Drug Discovery, Griffith University, Don Young Road, Brisbane, 4111, Australia
| | - Joseph J Byrne
- Department of Veterinary Biosciences, The University of Melbourne, Flemington Road, Parkville, 3010, Australia
| | - Merrick G Ekins
- Biodiversity and Geosciences, Queensland Museum, Grey Street, Brisbane, 4101, Australia
| | - Robin B Gasser
- Department of Veterinary Biosciences, The University of Melbourne, Flemington Road, Parkville, 3010, Australia
| | - Rohan A Davis
- Griffith Institute for Drug Discovery, Griffith University, Don Young Road, Brisbane, 4111, Australia
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Hayes S, Taki AC, Lum KY, Byrne JJ, White JM, Ekins MG, Gasser RB, Davis RA. Identification of Anthelmintic Bishomoscalarane Sesterterpenes from the Australian Marine Sponge Phyllospongia bergquistae and Structure Revision of Phyllolactones A-D. JOURNAL OF NATURAL PRODUCTS 2022; 85:1723-1729. [PMID: 35727327 DOI: 10.1021/acs.jnatprod.2c00229] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
High-throughput screening of the NatureBank marine extract library (7616 samples) identified an extract derived from the Australian marine sponge Phyllospongia bergquistae with activity against Hemonchus contortus (barber's pole worm), an economically important parasitic nematode. Bioassay-guided fractionation of the CH2Cl2/MeOH extract from P. bergquistae led to the purification of four known bishomoscalarane sesterterpenes, phyllolactones A-D (1-4). The absolute configurations of phyllolactones B (2) and C (3) were determined by single-crystal X-ray diffraction analysis; literature and data analyses revealed the need for these chemical structures to be revised. Compounds 2-4 induced a lethal, skinny (Ski) phenotype in larvae of H. contortus at concentrations between 5.3 and 10.1 μM. These data indicate that the bishomoscalarane sesterterpene structure class warrants further investigation for nematocidal or nematostatic activity.
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Affiliation(s)
- Sasha Hayes
- Griffith Institute for Drug Discovery, Griffith University, School of Environment and Science, Brisbane, QLD 4111, Australia
| | - Aya C Taki
- Department of Biosciences, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Kah Yean Lum
- Griffith Institute for Drug Discovery, Griffith University, School of Environment and Science, Brisbane, QLD 4111, Australia
| | - Joseph J Byrne
- Department of Biosciences, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Jonathan M White
- School of Chemistry and Bio21 Institute, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Merrick G Ekins
- Griffith Institute for Drug Discovery, Griffith University, School of Environment and Science, Brisbane, QLD 4111, Australia
- Biodiversity and Geosciences, Queensland Museum, South Brisbane BC, QLD 4101, Australia
| | - Robin B Gasser
- Department of Biosciences, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Rohan A Davis
- Griffith Institute for Drug Discovery, Griffith University, School of Environment and Science, Brisbane, 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] [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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