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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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Klimenko A, Huber R, Marcourt L, Tabakaev D, Koval A, Dautov SS, Dautova TN, Wolfender JL, Thew R, Khotimchenko Y, Queiroz EF, Katanaev VL. Shallow- and Deep-Water Ophiura Species Produce a Panel of Chlorin Compounds with Potent Photodynamic Anticancer Activities. Antioxidants (Basel) 2023; 12:antiox12020386. [PMID: 36829945 PMCID: PMC9952619 DOI: 10.3390/antiox12020386] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/29/2023] [Accepted: 02/03/2023] [Indexed: 02/09/2023] Open
Abstract
A Pacific brittle star Ophiura sarsii has previously been shown to produce a chlorin (3S,4S)-14-Ethyl-9-(hydroxymethyl)-4,8,13,18-tetramethyl-20-oxo-3-phorbinepropanoic acid (ETPA) (1) with potent phototoxic activities, making it applicable to photodynamic therapy. Using extensive LC-MS metabolite profiling, molecular network analysis, and targeted isolation with de novo NMR structure elucidation, we herein identify five additional chlorin compounds from O. sarsii and its deep-sea relative O. ooplax: 10S-Hydroxypheophorbide a (2), Pheophorbide a (3), Pyropheophorbide a (4), (3S,4S,21R)-14-Ethyl-9-(hydroxymethyl)-21-(methoxycarbonyl)-4,8,13,18-tetramethyl-20-oxo-3-phorbinepropanoic acid (5), and (3S,4S,21R)-14-Ethyl-21-hydroxy-9-(hydroxymethyl)-4,8,13,18-tetramethyl-20-oxo-3-phorbinepropanoic acid (6). Chlorins 5 and 6 have not been previously reported in natural sources. Interestingly, low amounts of chlorins 1-4 and 6 could also be identified in a distant species, the basket star Gorgonocephalus cf. eucnemis, demonstrating that chlorins are produced by a wide spectrum of marine invertebrates of the class Ophiuroidea. Following the purification of these major Ophiura chlorin metabolites, we discovered the significant singlet oxygen quantum yield upon their photoinduction and the resulting phototoxicity against triple-negative breast cancer BT-20 cells. These studies identify an arsenal of brittle star chlorins as natural photosensitizers with potential photodynamic therapy applications.
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Affiliation(s)
- Antonina Klimenko
- Translational Research Center in Oncohaematology, Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, Rue Michel-Servet 1, CH-1206 Geneva, Switzerland
- Institute of Life Sciences and Biomedicine, Far Eastern Federal University, 690090 Vladivostok, Russia
| | - Robin Huber
- School of Pharmaceutical Sciences, University of Geneva, Rue Michel-Servet 1, CH-1206 Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, Rue Michel-Servet 1, CH-1206 Geneva, Switzerland
| | - Laurence Marcourt
- School of Pharmaceutical Sciences, University of Geneva, Rue Michel-Servet 1, CH-1206 Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, Rue Michel-Servet 1, CH-1206 Geneva, Switzerland
| | - Dmitry Tabakaev
- Department of Applied Physics, Faculty of Sciences, University of Geneva, Rue de l’Ecole-De-Médecine 20, CH-1205 Geneva, Switzerland
| | - Alexey Koval
- Translational Research Center in Oncohaematology, Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, Rue Michel-Servet 1, CH-1206 Geneva, Switzerland
| | - Salim Sh. Dautov
- A.V. Zhirmunsky National Scientific Center of Marine Biology, Far East Branch of Russian Academy of Sciences, Palchevsky St. 17, 690041 Vladivostok, Russia
| | - Tatyana N. Dautova
- A.V. Zhirmunsky National Scientific Center of Marine Biology, Far East Branch of Russian Academy of Sciences, Palchevsky St. 17, 690041 Vladivostok, Russia
| | - Jean-Luc Wolfender
- School of Pharmaceutical Sciences, University of Geneva, Rue Michel-Servet 1, CH-1206 Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, Rue Michel-Servet 1, CH-1206 Geneva, Switzerland
- Correspondence: (J.-L.W.); (E.F.Q.); (V.L.K.)
| | - Rob Thew
- Department of Applied Physics, Faculty of Sciences, University of Geneva, Rue de l’Ecole-De-Médecine 20, CH-1205 Geneva, Switzerland
| | - Yuri Khotimchenko
- Institute of Life Sciences and Biomedicine, Far Eastern Federal University, 690090 Vladivostok, Russia
- A.V. Zhirmunsky National Scientific Center of Marine Biology, Far East Branch of Russian Academy of Sciences, Palchevsky St. 17, 690041 Vladivostok, Russia
| | - Emerson Ferreira Queiroz
- School of Pharmaceutical Sciences, University of Geneva, Rue Michel-Servet 1, CH-1206 Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, Rue Michel-Servet 1, CH-1206 Geneva, Switzerland
- Correspondence: (J.-L.W.); (E.F.Q.); (V.L.K.)
| | - Vladimir L. Katanaev
- Translational Research Center in Oncohaematology, Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, Rue Michel-Servet 1, CH-1206 Geneva, Switzerland
- Institute of Life Sciences and Biomedicine, Far Eastern Federal University, 690090 Vladivostok, Russia
- Correspondence: (J.-L.W.); (E.F.Q.); (V.L.K.)
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Xu Q, Yang X, Zhang R, Li Y, Yan Z, Li X, Ma B, Liu Y, Lin A, Han S, Li K, Chen L. Embryotoxicity and Teratogenicity of Steroidal Saponin Isolated from Ophiopholis mirabilis. TOXICS 2023; 11:137. [PMID: 36851012 PMCID: PMC9959855 DOI: 10.3390/toxics11020137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 01/28/2023] [Accepted: 01/29/2023] [Indexed: 06/18/2023]
Abstract
Benthic invertebrates produce secondary metabolites that serve as defenses against consumers and promote their fitness. To explore the chemical defense in marine benthic echinoderms, the chemical constituents of Ophiopholis mirabilis were investigated. A steroidal monoglycoside, asterosaponin P1, was isolated from O. mirabilis for the first-time using column chromatography. The chemical structure was characterized by spectroscopic and spectrometric methods. The embryotoxicity and teratogenicity of the isolated compound were assessed using the zebrafish embryo assay, a powerful vertebrate animal model system to study mechanisms of toxicity. When applied at high concentrations, asterosaponin P1 causes a significant increase in embryo mortality. A moderate LC50 of asterosaponin P1 appeared to be time- and concentration-dependent in its toxicity to zebrafish embryos. Teratogenicity in zebrafish embryos also included morphological defects, decreased hatchability, and a reduced heart rate. These findings revealed that steroidal saponin extracted from O. mirabilis exhibited acute toxic effects on zebrafish embryos, suggesting a potential chemical defense function in marine habitats.
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Affiliation(s)
- Qian Xu
- Jiangsu Provincial Institute of Marine Resources Development, College of Pharmacy, Jiangsu Ocean University, Lianyungang 222005, China
| | - Xiao Yang
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ranran Zhang
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Yaxi Li
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Zhi Yan
- School of Ocean, Yantai University, Yantai 266071, China
| | - Xiaodong Li
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Bing Ma
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Yanfang Liu
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Ainuo Lin
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Shaoshuai Han
- School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209, China
| | - Ke Li
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Li Chen
- Jiangsu Provincial Institute of Marine Resources Development, College of Pharmacy, Jiangsu Ocean University, Lianyungang 222005, China
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Cytotoxic and antimicrobial activities of two new sesquiterpenoids from red sea brittle star Ophiocoma dentata. Sci Rep 2022; 12:8209. [PMID: 35581320 PMCID: PMC9114132 DOI: 10.1038/s41598-022-12192-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 04/28/2022] [Indexed: 11/08/2022] Open
Abstract
Bioactive compounds were extracted from a locally available brittle star; Ophiocoma dentata, collected from the Red Sea, Egypt. Two new sesquiterpenoids; 8, 11-epoxy-9(15)-himachaladiene-4-ol (O8-ophiocomane) and, 11-epoxy-9(15)-himachaladiene-4-ol (O7-ophiocomane) were isolated and characterized using appropriate techniques. Structure elucidation was estimated via 1D NMR, 2D NMR, FT-IR and mass spectroscopy analyses. The isolated compounds were tested for cytotoxic, antibacterial and antifungal activities. Pure compounds showed a dose dependent reduction in MCF-7 cells viability with LC50 of 103.5 and 59.5 μg/ml for compounds 1 and 2 respectively compared to the chemotherapeutic drug cisplatin (47.4 µg/ml). In vivo experiments showed that O. dentate extract significantly reduced tumor progression and improved hematological parameters and liver functions of tumor-bearing mice when administered either before or after tumor cells' injection. The most remarkable antimicrobial effects of O. dentate crude extract were against Staphylococcus aureus, Vibrio damsela and Pseudomonas aeruginosa while the pure compounds showed activity against P. aeruginosa alone. Neither the crude extract nor the pure compounds have shown activity against Aeromonas hydrophila. These results indicates that O. dentata extract and newly isolated compounds have shown a promising cytotoxic, antiproliferative and antimicrobial activities that might be useful for pharmaceutical applications.
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Klimenko A, Rodina EE, Silachev D, Begun M, Babenko VA, Benditkis AS, Kozlov AS, Krasnovsky AA, Khotimchenko YS, Katanaev VL. Chlorin Endogenous to the North Pacific Brittle Star Ophiura sarsii for Photodynamic Therapy Applications in Breast Cancer and Glioblastoma Models. Biomedicines 2022; 10:biomedicines10010134. [PMID: 35052813 PMCID: PMC8773836 DOI: 10.3390/biomedicines10010134] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 01/03/2022] [Accepted: 01/05/2022] [Indexed: 02/06/2023] Open
Abstract
Photodynamic therapy (PDT) represents a powerful avenue for anticancer treatment. PDT relies on the use of photosensitizers—compounds accumulating in the tumor and converted from benign to cytotoxic upon targeted photoactivation. We here describe (3S,4S)-14-Ethyl-9-(hydroxymethyl)-4,8,13,18-tetramethyl-20-oxo-3-phorbinepropanoic acid (ETPA) as a major metabolite of the North Pacific brittle stars Ophiura sarsii. As a chlorin, ETPA efficiently produces singlet oxygen upon red-light photoactivation and exerts powerful sub-micromolar phototoxicity against a panel of cancer cell lines in vitro. In a mouse model of glioblastoma, intravenous ETPA injection combined with targeted red laser irradiation induced strong necrotic ablation of the brain tumor. Along with the straightforward ETPA purification protocol and abundance of O. sarsii, these studies pave the way for the development of ETPA as a novel natural product-based photodynamic therapeutic.
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Affiliation(s)
- Antonina Klimenko
- Institute of Life Sciences and Biomedicine, Far Eastern Federal University, 690922 Vladivostok, Russia; (A.K.); (E.E.R.); (M.B.); (Y.S.K.)
| | - Elvira E. Rodina
- Institute of Life Sciences and Biomedicine, Far Eastern Federal University, 690922 Vladivostok, Russia; (A.K.); (E.E.R.); (M.B.); (Y.S.K.)
| | - Denis Silachev
- A.N. Belozersky Research Institute of Physico-Chemical Biology, Moscow State University, 119899 Moscow, Russia; (D.S.); (V.A.B.)
| | - Maria Begun
- Institute of Life Sciences and Biomedicine, Far Eastern Federal University, 690922 Vladivostok, Russia; (A.K.); (E.E.R.); (M.B.); (Y.S.K.)
| | - Valentina A. Babenko
- A.N. Belozersky Research Institute of Physico-Chemical Biology, Moscow State University, 119899 Moscow, Russia; (D.S.); (V.A.B.)
| | - Anton S. Benditkis
- Federal Research Center of Biotechnology of the Russian Academy of Sciences, 119071 Moscow, Russia; (A.S.B.); (A.S.K.); (A.A.K.)
| | - Anton S. Kozlov
- Federal Research Center of Biotechnology of the Russian Academy of Sciences, 119071 Moscow, Russia; (A.S.B.); (A.S.K.); (A.A.K.)
| | - Alexander A. Krasnovsky
- Federal Research Center of Biotechnology of the Russian Academy of Sciences, 119071 Moscow, Russia; (A.S.B.); (A.S.K.); (A.A.K.)
| | - Yuri S. Khotimchenko
- Institute of Life Sciences and Biomedicine, Far Eastern Federal University, 690922 Vladivostok, Russia; (A.K.); (E.E.R.); (M.B.); (Y.S.K.)
| | - Vladimir L. Katanaev
- Institute of Life Sciences and Biomedicine, Far Eastern Federal University, 690922 Vladivostok, Russia; (A.K.); (E.E.R.); (M.B.); (Y.S.K.)
- Translational Research Center in Oncohaematology, Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
- Correspondence:
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Katanaev VL, Blagodatski A, Xu J, Khotimchenko Y, Koval A. Mining Natural Compounds to Target WNT Signaling: Land and Sea Tales. Handb Exp Pharmacol 2021; 269:215-248. [PMID: 34455487 DOI: 10.1007/164_2021_530] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
WNT signaling plays paramount roles in organism development, physiology, and disease, representing a highly attractive target for drug development. However, no WNT-modulating drugs have been approved, with several candidates trudging through the early clinical trials. This delay instigates alternative approaches to discover WNT-modulating drugs. Natural products were the source of therapeutics for centuries, but the chemical diversity they offer, especially when looking at different taxonomic groups and habitats, is still to a large extent unexplored. These considerations urge researchers to screen natural compounds for the WNT-modulatory activities. Since several reviews on such endeavors exist, we here have attempted to present these efforts as "Land and sea tales" (citing the book title by Rudyard Kipling) superimposing them onto the traditional pipeline of drug discovery and early development. In doing so, we illustrate each step of the pipeline with case studies stemming from our own research. It will become obvious that several steps of the pipeline need to be modified when applied to natural products rather than to synthetic libraries. Yet the main message of this chapter is that natural compounds represent a powerful source for the WNT signaling modulators and can be developed towards drug candidates against WNT-dependent maladies.
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Affiliation(s)
- Vladimir L Katanaev
- Department of Cell Physiology and Metabolism, Faculty of Medicine, Translational Research Centre in Oncohaematology, University of Geneva, Geneva, Switzerland.
- School of Biomedicine, Far Eastern Federal University, Vladivostok, Russia.
| | - Artem Blagodatski
- School of Biomedicine, Far Eastern Federal University, Vladivostok, Russia
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences Pushchino, Moscow, Russia
| | - Jiabin Xu
- Department of Cell Physiology and Metabolism, Faculty of Medicine, Translational Research Centre in Oncohaematology, University of Geneva, Geneva, Switzerland
| | - Yuri Khotimchenko
- School of Biomedicine, Far Eastern Federal University, Vladivostok, Russia
- National Scientific Center for Marine Biology, Far Eastern Branch of Russian Academy of Sciences, Vladivostok, Russia
| | - Alexey Koval
- Department of Cell Physiology and Metabolism, Faculty of Medicine, Translational Research Centre in Oncohaematology, University of Geneva, Geneva, Switzerland
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