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Kaftan G, Erdoğan MA, El-Shazly M, Lu MC, Shih SP, Lin HY, Saso L, Armagan G. Heteronemin promotes iron-dependent cell death in pancreatic cancer. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024; 397:1865-1874. [PMID: 37773525 DOI: 10.1007/s00210-023-02736-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 09/20/2023] [Indexed: 10/01/2023]
Abstract
The marine environment has been recognized as a prolific source of potent bioactive compounds with significant anticancer properties. Among these, heteronemin, a sesterterpenoid-type natural product, has shown promise. This study delves into the potential of heteronemin as a ferroptotic agent against pancreatic cancer, using the Panc-1 cell line as a model. The cytotoxic potential of heteronemin was assessed using cell viability assays. Furthermore, its effect on lipid peroxidation was determined spectrophotometrically, while the changes it induced in autophagy- and ferritin-related protein expressions were evaluated using immunoblotting techniques. Various cell-based tests were employed to scrutinize its anticancer efficacy. Heteronemin displayed a notable cytotoxic effect, reducing cell viability by 50% at a concentration of 55 nM. This cytotoxicity was discernibly linked to ferroptosis, as evidenced by the reversal of cell death upon treatment with the ferroptosis inhibitor, ferrostatin-1. Heteronemin treatment led to a marked increase in ferroptosis markers and malondialdehyde (MDA) levels. Conversely, the expression of glutathione peroxidase-4 (GPX4), a key anti-ferroptotic protein, was suppressed. Furthermore, significant modulations in the expression of ferritinophagy- and iron-related proteins such as Atg5, Atg7, FTL, STEAP3, and DMT-1 were evident post-treatment (p < 0.05). This study underscores the potential of heteronemin as a ferroptosis inducer in pancreatic cancer cells. Given its robust cytotoxicity, heteronemin emerges as a promising lead compound for further exploration in cancer therapeutics.
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Affiliation(s)
- Gizem Kaftan
- Doctoral Degree Program in Biochemistry, Graduate School of Health Sciences, Ege University, 35100, Bornova, Izmir, Turkey
- Department of Biochemistry, Faculty of Pharmacy, Afyonkarahisar Health Sciences University, 03100, Afyonkarahisar, Turkey
| | - Mümin Alper Erdoğan
- Department of Physiology, Faculty of Medicine, Izmir Katip Çelebi University, Çiğli, Izmir, Turkey
| | - Mohamed El-Shazly
- Department of Pharmacognosy, Faculty of Pharmacy, Ain-Shams University, Organization of African Unity Street, Abassia, 11566, Cairo, Egypt
- Department of Pharmaceutical Biology, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo, 11835, Egypt
| | - Mei-Chin Lu
- Graduate Institute of Marine Biology, National Dong Hwa University, Pingtung, 944, Taiwan
- National Museum of Marine Biology & Aquarium, Pingtung, 944, Taiwan
| | - Shou-Ping Shih
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-Sen University (NSYSU), 70 Lien-Hai Road, Kaohsiung, 80424, Taiwan.
- Doctoral Degree Program in Marine Biotechnology, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei, 11529, Taiwan.
| | - Hung-Yu Lin
- School of Medicine, College of Medicine, I-SHOU University, Kaohsiung, Taiwan
- Division of Urology, Department of Surgery, E-Da Cancer & E-Da Hospital, Kaohsiung, 824, Taiwan
| | - Luciano Saso
- Department of Physiology and Pharmacology "Vittorio Erspamer", Sapienza University of Rome, P. Le Aldo Moro 5, 00185, Rome, Italy
| | - Güliz Armagan
- Department of Biochemistry, Faculty of Pharmacy, Ege University, 35100, Bornova, Izmir, Turkey.
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2
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Khalifa S, Enomoto M, Nakagawa K. Unveiling an unexpected superoxide-mediated photooxidation mechanism of squalene monohydroperoxides to squalene hydroperoxy cyclic peroxides through ESR and LC-MS/MS analyses. Sci Rep 2023; 13:19525. [PMID: 37945632 PMCID: PMC10636020 DOI: 10.1038/s41598-023-46044-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 10/26/2023] [Indexed: 11/12/2023] Open
Abstract
Lipid cyclic peroxides are a rarely reported and documented class of compounds in the human organism. Recently, we reported the formation of squalene (SQ) hydroperoxy cyclic peroxides derived from SQ monohydroperoxide isomers (SQ-OOHs) for the first time. Notably, we successfully detected and quantified cis-2-OOH-3-(1,2-dioxane)-SQ in the human skin. Nevertheless, the underlying mechanism governing the formation of these compounds remained elusive. Therefore, in the current study, we set to determine the reaction's mechanism. To this end, a comprehensive analysis of the precise conditions involved in the onset and propagation of this conversion was carried out by oxidizing total SQ-OOHs under different conditions, including singlet oxygen (1O2), thermal, and photoinduced oxidations monitored by quantifying the generated 2-OOH-3-(1,2-dioxane)-SQ using liquid chromatography-tandem mass spectrometry (LC-MS/MS). Radical intermediates were thoroughly investigated using Electron Spin Resonance (ESR) with the aid of spin traps and radical references. Moreover, calculations of SQ-OOHs' electrostatic charges were performed on Spartan 18 software. We found that the reaction is ideally induced and favored under photooxidation in the presence of 3O2 in hexane, and that superoxide radical (O2•-) is the first key intermediate in this mechanism, whereas peroxyl radicals were the major species observed throughout the oxidation. Chemical calculations provided an explanation for the targeting of tertiary SQ-OOHs by this reaction and gave further evidence on the proposed heterolytic cleavage initiating the reaction. The novel oxidation mechanism suggested herein offers new insights into understanding lipid secondary oxidation and is a promising finding for further studying lipid cyclic peroxides in general.
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Affiliation(s)
- Saoussane Khalifa
- Laboratory of Food Function Analysis, Graduate School of Agricultural Science, Tohoku University, Sendai, 980-8572, Japan
| | - Masaru Enomoto
- Applied Bioorganic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, 980-8572, Japan
| | - Kiyotaka Nakagawa
- Laboratory of Food Function Analysis, Graduate School of Agricultural Science, Tohoku University, Sendai, 980-8572, Japan.
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3
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Wang K, Chen YF, Yang YCSH, Huang HM, Lee SY, Shih YJ, Li ZL, Whang-Peng J, Lin HY, Davis PJ. The power of heteronemin in cancers. J Biomed Sci 2022; 29:41. [PMID: 35705962 PMCID: PMC9202199 DOI: 10.1186/s12929-022-00816-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 05/24/2022] [Indexed: 12/14/2022] Open
Abstract
Heteronemin (Haimian jing) is a sesterterpenoid-type natural marine product that is isolated from sponges and has anticancer properties. It inhibits cancer cell proliferation via different mechanisms, such as reactive oxygen species (ROS) production, cell cycle arrest, apoptosis as well as proliferative gene changes in various types of cancers. Recently, the novel structure and bioactivity evaluation of heteronemin has received extensive attention. Hormones control physiological activities regularly, however, they may also affect several abnormalities such as cancer. L-Thyroxine (T4), steroid hormones, and epidermal growth factor (EGF) up-regulate the accumulation of checkpoint programmed death-ligand 1 (PD-L1) and promote inflammation in cancer cells. Heteronemin suppresses PD-L1 expression and reduces the PD-L1-induced proliferative effect. In the current review, we evaluated research and evidence regarding the antitumor effects of heteronemin and the antagonizing effects of non-peptide hormones and growth factors on heteronemin-induced anti-cancer properties and utilized computational molecular modeling to explain how these ligands interacted with the integrin αvβ3 receptors. On the other hand, thyroid hormone deaminated analogue, tetraiodothyroacetic acid (tetrac), modulates signal pathways and inhibits cancer growth and metastasis. The combination of heteronemin and tetrac derivatives has been demonstrated to compensate for anti-proliferation in cancer cells under different circumstances. Overall, this review outlines the potential of heteronemin in managing different types of cancers that may lead to its clinical development as an anticancer agent.
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Affiliation(s)
- Kuan Wang
- Graduate Institute of Nanomedicine and Medical Engineering, College of Medical Engineering, Taipei Medical University, 250 Wuxing Street, Taipei 110, Taipei, 11031, Taiwan
| | - Yi-Fong Chen
- Graduate Institute of Cancer Molecular Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan
| | - Yu-Chen S H Yang
- Joint Biobank, Office of Human Research, Taipei Medical University, Taipei, 11031, Taiwan
| | - Haw-Ming Huang
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei, 11031, Taiwan
| | - Sheng-Yang Lee
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei, 11031, Taiwan.,Dentistry, Wan-Fang Medical Center, Taipei Medical University, Taipei, 11031, Taiwan
| | - Ya-Jung Shih
- Graduate Institute of Nanomedicine and Medical Engineering, College of Medical Engineering, Taipei Medical University, 250 Wuxing Street, Taipei 110, Taipei, 11031, Taiwan.,Graduate Institute of Cancer Molecular Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan
| | - Zi-Lin Li
- Graduate Institute of Nanomedicine and Medical Engineering, College of Medical Engineering, Taipei Medical University, 250 Wuxing Street, Taipei 110, Taipei, 11031, Taiwan.,Graduate Institute of Cancer Molecular Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan
| | - Jacqueline Whang-Peng
- Cancer Center, Wan Fang Hospital, Taipei Medical University, No. 111, Section 3, Xinglong Road, Wenshan District, Taipei City, 116, Taipei, 11031, Taiwan.
| | - Hung-Yun Lin
- Graduate Institute of Cancer Molecular Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan. .,Cancer Center, Wan Fang Hospital, Taipei Medical University, No. 111, Section 3, Xinglong Road, Wenshan District, Taipei City, 116, Taipei, 11031, Taiwan. .,TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei, 11031, Taiwan. .,Traditional Herbal Medicine Research Center of Taipei Medical University Hospital, Taipei Medical University, Taipei, 11031, Taiwan. .,Pharmaceutical Research Institute, Albany College of Pharmacy and Health Sciences, Rensselaer, NY, 12144, USA.
| | - Paul J Davis
- Pharmaceutical Research Institute, Albany College of Pharmacy and Health Sciences, Rensselaer, NY, 12144, USA.,Department of Medicine, Albany Medical College, Albany, NY12144, USA
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Patel OPS, Beteck RM, Legoabe LJ. Antimalarial application of quinones: A recent update. Eur J Med Chem 2020; 210:113084. [PMID: 33333397 DOI: 10.1016/j.ejmech.2020.113084] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 11/27/2020] [Accepted: 12/01/2020] [Indexed: 12/28/2022]
Abstract
Atovaquone belongs to a naphthoquinone class of drugs and is used in combination with proguanil (Malarone) for the treatment of acute, uncomplicated malaria caused by Plasmodium falciparum (including chloroquine-resistant P. falciparum/P. vivax). Numerous quinone-derived compounds have attracted considerable attention in the last few decades due to their potential in antimalarial drug discovery. Several semi-synthetic derivatives of natural quinones, synthetic quinones (naphtho-/benzo-quinone, anthraquinones, thiazinoquinones), and quinone-based hybrids were explored for their in vitro and in vivo antimalarial activities. A careful literature survey revealed that this topic has not been compiled as a review article so far. Therefore, we herein summarise the recent discovery (the year 2009-2020) of quinone based antimalarial compounds in chronological order. This compilation would be very useful towards the exploration of novel quinone-derived compounds against malarial parasites with promising efficacy and lesser side effects.
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Affiliation(s)
- Om P S Patel
- Centre of Excellence for Pharmaceutical Sciences, North-West University, Private Bag X6001, Potchefstroom, 2520, South Africa.
| | - Richard M Beteck
- Centre of Excellence for Pharmaceutical Sciences, North-West University, Private Bag X6001, Potchefstroom, 2520, South Africa
| | - Lesetja J Legoabe
- Centre of Excellence for Pharmaceutical Sciences, North-West University, Private Bag X6001, Potchefstroom, 2520, South Africa.
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Rivas L, Rojas V. Cyanobacterial peptides as a tour de force in the chemical space of antiparasitic agents. Arch Biochem Biophys 2019; 664:24-39. [PMID: 30707942 DOI: 10.1016/j.abb.2019.01.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 01/22/2019] [Accepted: 01/27/2019] [Indexed: 02/07/2023]
Abstract
Parasites are scarcely addressed target for antimicrobial peptides despite their big impact in health and global economy. The notion of antimicrobial peptides is frequently associated to the innate immune defense of vertebrates and invertebrate vectors, as the ultimate recipients of the parasite infection. These antiparasite peptides are produced by ribosomal synthesis, with few post-translational modifications, and their diversity come mostly from their amino acid sequence. For many of them permeabilization of the cell membrane of the targeted pathogen is crucial for their microbicidal mechanism. In contrast, cyanobacterial peptides are produced either by ribosomal or non-ribosomal biosynthesis. Quite often, they undergo heavy modifications, such as the inclusion of non-proteinogenic amino acids, lipid acylation, cyclation, Nα-methylation, or heterocyclic rings. Furthermore, the few targets identified for cyanobacterial peptides in parasites are intracellular. Some cyanobacterial antiparasite peptides are active at picomolar concentrations, whereas those from higher eukaryotes usually work in the micromolar range. In all, cyanobacterial peptides are an appealing target to develop new antiparasite therapies and a challenge in the invention of new synthetic methods for peptides. This review aims to provide an updated appraisal of antiparasite cyanobacterial peptides and to establish a side-by -side comparison with those antiparasite peptides from higher eukaryotes.
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Affiliation(s)
- Luis Rivas
- Centro de Investigaciones Biológicas (C.S.I.C), c/ Ramiro de Maeztu 9, 28040, Madrid, Spain.
| | - Verónica Rojas
- Instituto de Biología, Pontificia Universidad Católica de Valparaíso, Avenida Universidad 330, Campus Curauma, Curauma, Valparaíso, Chile.
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Dai J, Dan W, Schneider U, Wang J. β-Carboline alkaloid monomers and dimers: Occurrence, structural diversity, and biological activities. Eur J Med Chem 2018; 157:622-656. [DOI: 10.1016/j.ejmech.2018.08.027] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 06/26/2018] [Accepted: 08/10/2018] [Indexed: 01/21/2023]
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7
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Lee MG, Liu YC, Lee YL, El-Shazly M, Lai KH, Shih SP, Ke SC, Hong MC, Du YC, Yang JC, Sung PJ, Wen ZH, Lu MC. Heteronemin, a Marine Sesterterpenoid-Type Metabolite, Induces Apoptosis in Prostate LNcap Cells via Oxidative and ER Stress Combined with the Inhibition of Topoisomerase II and Hsp90. Mar Drugs 2018; 16:md16060204. [PMID: 29890785 PMCID: PMC6025191 DOI: 10.3390/md16060204] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 05/31/2018] [Accepted: 06/09/2018] [Indexed: 12/11/2022] Open
Abstract
Heteronemin, a marine sesterterpenoid-type natural product, possesses diverse bioactivities, especially antitumor effect. Accumulating evidence shows that heteronemin may act as a potent anticancer agent in clinical therapy. To fully understand the antitumor mechanism of heteronemin, we further explored the precise molecular targets in prostate cancer cells. Initially, heteronemin exhibited potent cytotoxic effect against LNcap and PC3 prostate cancer cells with IC50 1.4 and 2.7 μM after 24 h, respectively. In the xenograft animal model, the tumor size was significantly suppressed to about 51.9% in the heteronemin-treated group in comparison with the control group with no significant difference in the mice body weights. In addition, the results of a cell-free system assay indicated that heteronemin could act as topoisomerase II (topo II) catalytic inhibitor through the elimination of essential enzymatic activity of topoisomerase IIα expression. We found that the use of heteronemin-triggered apoptosis by 20.1⁻68.3%, caused disruption of mitochondrial membrane potential (MMP) by 66.9⁻99.1% and promoted calcium release by 1.8-, 2.0-, and 2.1-fold compared with the control group in a dose-dependent manner, as demonstrated by annexin-V/PI, rhodamine 123 and Fluo-3 staining assays, respectively. Moreover, our findings indicated that the pretreatment of LNcap cells with an inhibitor of protein tyrosine phosphatase (PTPi) diminished growth inhibition, oxidative and Endoplasmic Reticulum (ER) stress, as well as activation of Chop/Hsp70 induced by heteronemin, suggesting PTP activation plays a crucial rule in the cytotoxic activity of heteronemin. Using molecular docking analysis, heteronemin exhibited more binding affinity to the N-terminal ATP-binding pocket of Hsp90 protein than 17-AAG, a standard Hsp90 inhibitor. Finally, heteronemin promoted autophagy and apoptosis through the inhibition of Hsp 90 and topo II as well as PTP activation in prostate cancer cells. Taken together, these multiple targets present heteronemin as an interesting candidate for its future development as an antiprostatic agent.
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Affiliation(s)
- Man-Gang Lee
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804, Taiwan.
- Division of Urology, Department of Surgery, Kaohsiung Armed Forces General Hospital, Kaohsiung 802, Taiwan.
- Division of Urology, Department of Surgery, Zuoying Branch of Kaohsiung Armed Forces General Hospital, Kaohsiung 813, Taiwan.
| | - Yi-Chang Liu
- Division of Hematology-Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan.
- Department of Internal Medicine, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Yi-Lun Lee
- Department of Urology, Sinying Hospital, Ministry of Health and Welfare, Tainan 730, Taiwan.
| | - Mohamed El-Shazly
- Department of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, Ain-Shams University, Organization of African Unity Street, Abassia, Cairo 115, Egypt.
- Department of Pharmaceutical Biology, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo 114, Egypt.
| | - Kuei-Hung Lai
- Graduate Institute of Marine Biology, National Dong Hwa University, Pingtung 944, Taiwan.
- National Museum of Marine Biology & Aquarium, Pingtung 944, Taiwan.
| | - Shou-Ping Shih
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-sen University, 70 Lien-Hai Road, Kaohsiung 804, Taiwan.
- Doctoral Degree Program in Marine Biotechnology, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei 115, Taiwan.
| | - Seng-Chung Ke
- Division of Urology, Department of Surgery, Zuoying Branch of Kaohsiung Armed Forces General Hospital, Kaohsiung 813, Taiwan.
| | - Ming-Chang Hong
- Department and Graduate Institute of Aquaculture, National Kaohsiung Marine University, Kaohsiung 811, Taiwan.
| | - Ying-Chi Du
- Graduate Institute of Marine Biology, National Dong Hwa University, Pingtung 944, Taiwan.
- National Museum of Marine Biology & Aquarium, Pingtung 944, Taiwan.
| | - Juan-Cheng Yang
- Research Center for Natural Products & Drug Development, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung 404, Taiwan.
| | - Ping-Jyun Sung
- Graduate Institute of Marine Biology, National Dong Hwa University, Pingtung 944, Taiwan.
- National Museum of Marine Biology & Aquarium, Pingtung 944, Taiwan.
| | - Zhi-Hong Wen
- Division of Urology, Department of Surgery, Kaohsiung Armed Forces General Hospital, Kaohsiung 802, Taiwan.
| | - Mei-Chin Lu
- Graduate Institute of Marine Biology, National Dong Hwa University, Pingtung 944, Taiwan.
- National Museum of Marine Biology & Aquarium, Pingtung 944, Taiwan.
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Craig RA, Smith RC, Roizen JL, Jones AC, Virgil SC, Stoltz BM. Development of a Unified Enantioselective, Convergent Synthetic Approach Toward the Furanobutenolide-Derived Polycyclic Norcembranoid Diterpenes: Asymmetric Formation of the Polycyclic Norditerpenoid Carbocyclic Core by Tandem Annulation Cascade. J Org Chem 2018; 83:3467-3485. [PMID: 29464957 PMCID: PMC5889334 DOI: 10.1021/acs.joc.7b02825] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
An enantioselective and diastereoselective approach toward the synthesis of the tetracyclic scaffold of the furanobutenolide-derived polycyclic norditerpenoids is described. Focusing on synthetic efforts toward ineleganolide, the synthetic approach utilizes a palladium-catalyzed enantioselective allylic alkylation for the construction of the requisite chiral tertiary ether. A diastereoselective cyclopropanation-Cope rearrangement cascade enabled the convergent assembly of the ineleganolide [6,7,5,5]-tetracyclic scaffold. Investigation of substrates for this critical tandem annulation process is discussed along with synthetic manipulations of the [6,7,5,5]-tetracyclic scaffold and the attempted interconversion of the [6,7,5,5]-tetracyclic scaffold of ineleganolide to the isomeric [7,6,5,5]-core of scabrolide A and its naturally occurring isomers. Computational evaluation of ground-state energies of late-stage synthetic intermediates was used to guide synthetic development and aid in the investigation of the conformational rigidity of these highly constrained and compact polycyclic structures.
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Affiliation(s)
- Robert A. Craig
- Warren and Katherine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Russell C. Smith
- Warren and Katherine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Jennifer L. Roizen
- Warren and Katherine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Amanda C. Jones
- Warren and Katherine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Scott C. Virgil
- Warren and Katherine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Brian M. Stoltz
- Warren and Katherine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
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Nowruzi B, Haghighat S, Fahimi H, Mohammadi E. Nostoc
cyanobacteria species: a new and rich source of novel bioactive compounds with pharmaceutical potential. JOURNAL OF PHARMACEUTICAL HEALTH SERVICES RESEARCH 2017. [DOI: 10.1111/jphs.12202] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Bahareh Nowruzi
- Department of Biology, Science and Research Branch; Islamic Azad University; Tehran Iran
| | - Setareh Haghighat
- Department of Microbiology; Faculty of Advanced Sciences & Technology; Pharmaceutical Sciences Branch; Islamic Azad University; IAUPS; Tehran Iran
| | - Hossein Fahimi
- Department of Molecular and Cellular Sciences; Faculty of Advanced Sciences & Technology; Pharmaceutical Sciences Branch; Islamic Azad University; IAUPS; Tehran Iran
| | - Ehsan Mohammadi
- Department of Molecular and Cellular Sciences; Faculty of Advanced Sciences & Technology; Pharmaceutical Sciences Branch; Islamic Azad University; IAUPS; Tehran Iran
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11
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Pérez-Moreno G, Cantizani J, Sánchez-Carrasco P, Ruiz-Pérez LM, Martín J, el Aouad N, Pérez-Victoria I, Tormo JR, González-Menendez V, González I, de Pedro N, Reyes F, Genilloud O, Vicente F, González-Pacanowska D. Discovery of New Compounds Active against Plasmodium falciparum by High Throughput Screening of Microbial Natural Products. PLoS One 2016; 11:e0145812. [PMID: 26735308 PMCID: PMC4703298 DOI: 10.1371/journal.pone.0145812] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 12/09/2015] [Indexed: 12/03/2022] Open
Abstract
Due to the low structural diversity within the set of antimalarial drugs currently available in the clinic and the increasing number of cases of resistance, there is an urgent need to find new compounds with novel modes of action to treat the disease. Microbial natural products are characterized by their large diversity provided in terms of the chemical complexity of the compounds and the novelty of structures. Microbial natural products extracts have been underexplored in the search for new antiparasitic drugs and even more so in the discovery of new antimalarials. Our objective was to find new druggable natural products with antimalarial properties from the MEDINA natural products collection, one of the largest natural product libraries harboring more than 130,000 microbial extracts. In this work, we describe the optimization process and the results of a phenotypic high throughput screen (HTS) based on measurements of Plasmodium lactate dehydrogenase. A subset of more than 20,000 extracts from the MEDINA microbial products collection has been explored, leading to the discovery of 3 new compounds with antimalarial activity. In addition, we report on the novel antiplasmodial activity of 4 previously described natural products.
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Affiliation(s)
- Guiomar Pérez-Moreno
- Instituto de Parasitología y Biomedicina “López-Neyra”, Consejo Superior de Investigaciones Científicas, Parque Tecnológico de Ciencias de la Salud, Avenida del Conocimiento, s/n, 18016-Armilla (Granada), Spain
| | - Juan Cantizani
- Fundación MEDINA, Parque Tecnológico de Ciencias de la Salud, Avenida del Conocimiento, 34.18016-Armilla (Granada), Spain
| | - Paula Sánchez-Carrasco
- Instituto de Parasitología y Biomedicina “López-Neyra”, Consejo Superior de Investigaciones Científicas, Parque Tecnológico de Ciencias de la Salud, Avenida del Conocimiento, s/n, 18016-Armilla (Granada), Spain
| | - Luis Miguel Ruiz-Pérez
- Instituto de Parasitología y Biomedicina “López-Neyra”, Consejo Superior de Investigaciones Científicas, Parque Tecnológico de Ciencias de la Salud, Avenida del Conocimiento, s/n, 18016-Armilla (Granada), Spain
| | - Jesús Martín
- Fundación MEDINA, Parque Tecnológico de Ciencias de la Salud, Avenida del Conocimiento, 34.18016-Armilla (Granada), Spain
| | - Noureddine el Aouad
- Fundación MEDINA, Parque Tecnológico de Ciencias de la Salud, Avenida del Conocimiento, 34.18016-Armilla (Granada), Spain
| | - Ignacio Pérez-Victoria
- Fundación MEDINA, Parque Tecnológico de Ciencias de la Salud, Avenida del Conocimiento, 34.18016-Armilla (Granada), Spain
| | - José Rubén Tormo
- Fundación MEDINA, Parque Tecnológico de Ciencias de la Salud, Avenida del Conocimiento, 34.18016-Armilla (Granada), Spain
| | - Víctor González-Menendez
- Fundación MEDINA, Parque Tecnológico de Ciencias de la Salud, Avenida del Conocimiento, 34.18016-Armilla (Granada), Spain
| | - Ignacio González
- Fundación MEDINA, Parque Tecnológico de Ciencias de la Salud, Avenida del Conocimiento, 34.18016-Armilla (Granada), Spain
| | - Nuria de Pedro
- Fundación MEDINA, Parque Tecnológico de Ciencias de la Salud, Avenida del Conocimiento, 34.18016-Armilla (Granada), Spain
| | - Fernando Reyes
- Fundación MEDINA, Parque Tecnológico de Ciencias de la Salud, Avenida del Conocimiento, 34.18016-Armilla (Granada), Spain
| | - Olga Genilloud
- Fundación MEDINA, Parque Tecnológico de Ciencias de la Salud, Avenida del Conocimiento, 34.18016-Armilla (Granada), Spain
| | - Francisca Vicente
- Fundación MEDINA, Parque Tecnológico de Ciencias de la Salud, Avenida del Conocimiento, 34.18016-Armilla (Granada), Spain
| | - Dolores González-Pacanowska
- Instituto de Parasitología y Biomedicina “López-Neyra”, Consejo Superior de Investigaciones Científicas, Parque Tecnológico de Ciencias de la Salud, Avenida del Conocimiento, s/n, 18016-Armilla (Granada), Spain
- * E-mail:
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Skorokhod OA, Davalos-Schafler D, Gallo V, Valente E, Ulliers D, Notarpietro A, Mandili G, Novelli F, Persico M, Taglialatela-Scafati O, Arese P, Schwarzer E. Oxidative stress-mediated antimalarial activity of plakortin, a natural endoperoxide from the tropical sponge Plakortis simplex. Free Radic Biol Med 2015; 89:624-37. [PMID: 26459031 DOI: 10.1016/j.freeradbiomed.2015.10.399] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Revised: 09/27/2015] [Accepted: 10/07/2015] [Indexed: 10/22/2022]
Abstract
Plakortin, a polyketide endoperoxide from the sponge Plakortis simplex has antiparasitic activity against P. falciparum. Similar to artemisinin, its activity depends on the peroxide functionality. Plakortin induced stage-, dose- and time-dependent morphologic anomalies, early maturation delay, ROS generation and lipid peroxidation in the parasite. Ring damage by 1 and 10 µM plakortin led to parasite death before schizogony at 20 and 95%, respectively. Treatment of late schizonts with 1, 2, 5 and 10 µM plakortin resulted in decreased reinfection rates by 30, 50, 61 and 65%, respectively. In both rings and trophozoites, plakortin induced a dose- and time-dependent ROS production as well as a significant lipid peroxidation and up to 4-fold increase of the lipoperoxide breakdown product 4-hydroxynonenal (4-HNE). Antioxidants and the free radical scavengers trolox and N-acetylcysteine significantly attenuated the parasite damage. Plakortin generated 4-HNE conjugates with the P. falciparum proteins: heat shock protein Hsp70-1, endoplasmatic reticulum-standing Hsp70-2 (BiP analogue), V-type proton ATPase catalytic subunit A, enolase, the putative vacuolar protein sorting-associated protein 11, and the dynein heavy chain-like protein, whose specific binding sites were identified by mass spectrometry. These proteins are crucially involved in protein trafficking, transmembrane and vesicular transport and parasite survival. We hypothesize that binding of 4-HNE to functionally relevant parasite proteins may explain the observed plakortin-induced morphologic aberrations and parasite death. The identification of 4-HNE-protein conjugates may generate a novel paradigm to explain the mechanism of action of pro-oxidant, peroxide-based antimalarials such as plakortin, artemisinins and synthetic endoperoxides.
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Affiliation(s)
- Oleksii A Skorokhod
- Department of Oncology, University of Torino, Via Santena 5bis, 10126 Torino, Italy.
| | | | - Valentina Gallo
- Department of Oncology, University of Torino, Via Santena 5bis, 10126 Torino, Italy.
| | - Elena Valente
- Department of Oncology, University of Torino, Via Santena 5bis, 10126 Torino, Italy.
| | - Daniela Ulliers
- Department of Oncology, University of Torino, Via Santena 5bis, 10126 Torino, Italy.
| | - Agata Notarpietro
- Department of Oncology, University of Torino, Via Santena 5bis, 10126 Torino, Italy.
| | - Giorgia Mandili
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino Medical School, Via Nizza 52, 10126 Torino, Italy; Center for Experimental Research and Medical Studies (CeRMS), Città della Salute e della Scienza, Ospedale San Giovanni Battista, Via Cherasco 15, 10126 Torino, Italy.
| | - Francesco Novelli
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino Medical School, Via Nizza 52, 10126 Torino, Italy; Center for Experimental Research and Medical Studies (CeRMS), Città della Salute e della Scienza, Ospedale San Giovanni Battista, Via Cherasco 15, 10126 Torino, Italy.
| | - Marco Persico
- Department of Pharmacy, University of Napoli 'Federico II', Via D. Montesano 49, 80131 Napoli, Italy.
| | | | - Paolo Arese
- Department of Oncology, University of Torino, Via Santena 5bis, 10126 Torino, Italy.
| | - Evelin Schwarzer
- Department of Oncology, University of Torino, Via Santena 5bis, 10126 Torino, Italy.
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Waterman C, Calcul L, Beau J, Ma WS, Lebar MD, von Salm JL, Harter C, Mutka T, Morton LC, Maignan P, Barisic B, van Olphen A, Kyle DE, Vrijmoed L, Pang KL, Pearce CJ, Baker BJ. Miniaturized Cultivation of Microbiota for Antimalarial Drug Discovery. Med Res Rev 2014; 36:144-68. [PMID: 25545963 DOI: 10.1002/med.21335] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The ongoing search for effective antiplasmodial agents remains essential in the fight against malaria worldwide. Emerging parasitic drug resistance places an urgent need to explore chemotherapies with novel structures and mechanisms of action. Natural products have historically provided effective antimalarial drug scaffolds. In an effort to search nature's chemical potential for antiplasmodial agents, unconventionally sourced organisms coupled with innovative cultivation techniques were utilized. Approximately 60,000 niche microbes from various habitats (slow-growing terrestrial fungi, Antarctic microbes, and mangrove endophytes) were cultivated on a small-scale, extracted, and used in high-throughput screening to determine antimalarial activity. About 1% of crude extracts were considered active and 6% partially active (≥ 67% inhibition at 5 and 50 μg/mL, respectively). Active extracts (685) were cultivated on a large-scale, fractionated, and screened for both antimalarial activity and cytotoxicity. High interest fractions (397) with an IC50 < 1.11 μg/mL were identified and subjected to chromatographic separation for compound characterization and dereplication. Identifying active compounds with nanomolar antimalarial activity coupled with a selectivity index tenfold higher was accomplished with two of the 52 compounds isolated. This microscale, high-throughput screening project for antiplasmodial agents is discussed in the context of current natural product drug discovery efforts.
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Affiliation(s)
- Carrie Waterman
- Department of Chemistry, University of South Florida, Tampa, Florida, 33620, USA
| | - Laurent Calcul
- Department of Chemistry, University of South Florida, Tampa, Florida, 33620, USA
| | - Jeremy Beau
- Department of Chemistry, University of South Florida, Tampa, Florida, 33620, USA
| | - Wai Sheung Ma
- Department of Chemistry, University of South Florida, Tampa, Florida, 33620, USA
| | - Matthew D Lebar
- Department of Chemistry, University of South Florida, Tampa, Florida, 33620, USA
| | | | - Charles Harter
- Department of Chemistry, University of South Florida, Tampa, Florida, 33620, USA
| | - Tina Mutka
- Department of Global Health, University of South Florida, Tampa, Florida, 33620, USA
| | - Lindsay C Morton
- Department of Global Health, University of South Florida, Tampa, Florida, 33620, USA
| | - Patrick Maignan
- Department of Global Health, University of South Florida, Tampa, Florida, 33620, USA
| | - Betty Barisic
- Department of Global Health, University of South Florida, Tampa, Florida, 33620, USA
| | - Alberto van Olphen
- Department of Global Health, University of South Florida, Tampa, Florida, 33620, USA
| | - Dennis E Kyle
- Department of Global Health, University of South Florida, Tampa, Florida, 33620, USA
| | - Lilian Vrijmoed
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong
| | - Ka-Lai Pang
- Institute of Marine Biology and Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung, 20224, Taiwan
| | | | - Bill J Baker
- Department of Chemistry, University of South Florida, Tampa, Florida, 33620, USA.,Center for Drug Discovery and Innovation, University of South Florida, Tampa, Florida, 36612, USA
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Peña S, Fagundez C, Medeiros A, Comini M, Scarone L, Sellanes D, Manta E, Tulla-Puche J, Albericio F, Stewart L, Yardley V, Serra G. Synthesis of cyclohexapeptides as antimalarial and anti-trypanosomal agents. MEDCHEMCOMM 2014. [DOI: 10.1039/c4md00135d] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Azolic and non-azolic cyclohexapeptides were obtained and/or evaluated as promising antimalarial and/or anti-trypanosomal agents.
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Affiliation(s)
- S. Peña
- Cátedra de Química Farmacéutica
- (DQO)
- Facultad de Química
- Universidad de la República
- Montevideo, Uruguay
| | - C. Fagundez
- Cátedra de Química Farmacéutica
- (DQO)
- Facultad de Química
- Universidad de la República
- Montevideo, Uruguay
| | - A. Medeiros
- Group Redox Biology of Trypanosomes
- Institut Pasteur de Montevideo
- Montevideo, Uruguay
- Departamento de Bioquímica
- Facultad de Medicina
| | - M. Comini
- Group Redox Biology of Trypanosomes
- Institut Pasteur de Montevideo
- Montevideo, Uruguay
| | - L. Scarone
- Cátedra de Química Farmacéutica
- (DQO)
- Facultad de Química
- Universidad de la República
- Montevideo, Uruguay
| | - D. Sellanes
- Cátedra de Química Farmacéutica
- (DQO)
- Facultad de Química
- Universidad de la República
- Montevideo, Uruguay
| | - E. Manta
- Cátedra de Química Farmacéutica
- (DQO)
- Facultad de Química
- Universidad de la República
- Montevideo, Uruguay
| | - J. Tulla-Puche
- Institute for Research in Biomedicine (IRB Barcelona)
- 08028-Barcelona, Spain
- Centre on Bioengineering
- Biomaterials and Nanomedicine
- Barcelona Science Park
| | - F. Albericio
- Institute for Research in Biomedicine (IRB Barcelona)
- 08028-Barcelona, Spain
- Centre on Bioengineering
- Biomaterials and Nanomedicine
- Barcelona Science Park
| | - L. Stewart
- Faculty of Infectious & Tropical Disease
- LSHTM
- London, UK
| | - V. Yardley
- Faculty of Infectious & Tropical Disease
- LSHTM
- London, UK
| | - G. Serra
- Cátedra de Química Farmacéutica
- (DQO)
- Facultad de Química
- Universidad de la República
- Montevideo, Uruguay
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Salas-Sarduy E, Cabrera-Muñoz A, Cauerhff A, González-González Y, Trejo SA, Chidichimo A, Chávez-Planes MDLA, Cazzulo JJ. Antiparasitic effect of a fraction enriched in tight-binding protease inhibitors isolated from the Caribbean coral Plexaura homomalla. Exp Parasitol 2013; 135:611-22. [DOI: 10.1016/j.exppara.2013.09.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 09/17/2013] [Accepted: 09/22/2013] [Indexed: 01/13/2023]
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Mayer AMS, Rodríguez AD, Taglialatela-Scafati O, Fusetani N. Marine pharmacology in 2009-2011: marine compounds with antibacterial, antidiabetic, antifungal, anti-inflammatory, antiprotozoal, antituberculosis, and antiviral activities; affecting the immune and nervous systems, and other miscellaneous mechanisms of action. Mar Drugs 2013; 11:2510-73. [PMID: 23880931 PMCID: PMC3736438 DOI: 10.3390/md11072510] [Citation(s) in RCA: 169] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 06/04/2013] [Accepted: 06/14/2013] [Indexed: 12/13/2022] Open
Abstract
The peer-reviewed marine pharmacology literature from 2009 to 2011 is presented in this review, following the format used in the 1998–2008 reviews of this series. The pharmacology of structurally-characterized compounds isolated from marine animals, algae, fungi and bacteria is discussed in a comprehensive manner. Antibacterial, antifungal, antiprotozoal, antituberculosis, and antiviral pharmacological activities were reported for 102 marine natural products. Additionally, 60 marine compounds were observed to affect the immune and nervous system as well as possess antidiabetic and anti-inflammatory effects. Finally, 68 marine metabolites were shown to interact with a variety of receptors and molecular targets, and thus will probably contribute to multiple pharmacological classes upon further mechanism of action studies. Marine pharmacology during 2009–2011 remained a global enterprise, with researchers from 35 countries, and the United States, contributing to the preclinical pharmacology of 262 marine compounds which are part of the preclinical pharmaceutical pipeline. Continued pharmacological research with marine natural products will contribute to enhance the marine pharmaceutical clinical pipeline, which in 2013 consisted of 17 marine natural products, analogs or derivatives targeting a limited number of disease categories.
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Affiliation(s)
- Alejandro M. S. Mayer
- Department of Pharmacology, Chicago College of Osteopathic Medicine, Midwestern University, 555 31st Street, Downers Grove, Illinois 60515, USA
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +1-630-515-6951; Fax: +1-630-971-6414
| | - Abimael D. Rodríguez
- Department of Chemistry, University of Puerto Rico, San Juan, Puerto Rico 00931, USA; E-Mail:
| | - Orazio Taglialatela-Scafati
- Department of Pharmacy, University of Naples “Federico II”, Via D. Montesano 49, I-80131 Napoli, Italy; E-Mail:
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Antimalarial activity of axidjiferosides, new β-galactosylceramides from the African sponge Axinyssa djiferi. Mar Drugs 2013; 11:1304-15. [PMID: 23595058 PMCID: PMC3705406 DOI: 10.3390/md11041304] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Revised: 03/04/2013] [Accepted: 03/19/2013] [Indexed: 11/17/2022] Open
Abstract
The marine sponge, Axinyssa djiferi, collected on mangrove tree roots in Senegal, was investigated for glycolipids. A mixture containing new glycosphingolipids, named axidjiferoside-A, -B and -C, accounted for 0.07% of sponge biomass (dry weight) and for 2.16% of total lipids. It showed a significant antimalarial activity, with a 50% inhibitory concentration (IC50) of 0.53 ± 0.2 μM against a chloroquine-resistant strain of Plasmodium falciparum. They were identified as homologous β-galactopyranosylceramides composed of 2-amino-(6E)-octadec-6-en-1,3,4-triol, and the major one, axidjiferoside-A (around 60%), contained 2-hydroxytetracosanoic acid. Cytotoxicity was studied in vitro on human cancer cell lines (multiple myeloma, colorectal adenocarcinoma, glioblastoma and two lung cancer NSCLC-N6 and A549). Results of this investigation showed that axidjiferosides are of interest, because they proved a good antiplasmodial activity, with only a low cytotoxicity against various human cell lines and no significant antitrypanosomal and antileishmanial activity. Thus, it seems that galactosylceramides with a β anomeric configuration may be suitable in searching for new antimalarial drugs.
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The marine sponge toxin agelasine B increases the intracellular Ca(2+) concentration and induces apoptosis in human breast cancer cells (MCF-7). Cancer Chemother Pharmacol 2011; 69:71-83. [PMID: 21603866 DOI: 10.1007/s00280-011-1677-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2011] [Accepted: 05/09/2011] [Indexed: 10/18/2022]
Abstract
PURPOSE In search for new drugs derived from natural products for the possible treatment of cancer, we studied the action of agelasine B, a compound purified from a marine sponge Agelas clathrodes. METHODS Agelasine B was purified from a marine sponge Agelas clathrodes and assayed for cytotoxicity by MTT on two human breast cancer cells (MCF-7 and SKBr3), on a prostate cancer cells (PC-3) and on human fibroblasts. Changes in the intracellular Ca(2+) concentrations were assessed with FURA 2 and by confocal microscopy. Determination of Ca(2+)-ATPase activity was followed by Pi measurements. Changes in the mitochondria electrochemical potential was followed with Rhodamine 123. Apoptosis and DNA fragmentation were determined by TUNEL experiments. RESULTS Upon agelasine B treatment, cell viability of both human breast cancer cell lines was one order of magnitude lower as compared with fibroblasts (IC(50) for MCF-7 = 2.99 μM; SKBr3: IC(50) = 3.22 μM vs. fibroblasts: IC(50) = 32.91 μM), while the IC(50) for PC-3 IC(50) = 6.86 μM. Agelasine B induced a large increase in the intracellular Ca(2+) concentration in MCF-7, SKBr3, and PC-3 cells. By the use of confocal microscopy coupled to a perfusion system, we could observe that this toxin releases Ca(2+) from the endoplasmic reticulum (ER). We also demonstrated that agelasine B produces a potent inhibition of the ER Ca(2+)-ATPase (SERCA), and that this compound induced the fragmentation of DNA. Accordingly, agelasine B reduced the expression of the anti-apoptotic protein Bcl-2 and was able to activate caspase 8, without affecting the activity of caspase 7. CONCLUSIONS Agelasine B in MCF-7 cells induce the activation of apoptosis in response to a sustained increase in the [Ca(2+)]( i ) after blocking the SERCA activity. The reproduction of the effects of agelasine B on cell viability and on the [Ca(2+)]( I ) obtained on SKBr3 and PC-3 cancer cells strongly suggests the generality of the mechanism of action of this toxin.
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Broniatowska B, Allmendinger A, Kaiser M, Montamat-Sicotte D, Hingley-Wilson S, Lalvani A, Guiry M, Blunden G, Tasdemir D. Antiprotozoal, Antitubercular and Cytotoxic Potential of Cyanobacterial (Blue-Green Algal) Extracts from Ireland. Nat Prod Commun 2011. [DOI: 10.1177/1934578x1100600523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Cyanobacteria (= blue-green algae) are prolific producers of structurally distinct and biologically active metabolites. In the continuation of our search for new sources of anti-infective natural products, we have assessed the in vitro antiprotozoal ( Plasmodium falciparum, Trypanosoma brucei rhodesiense, T. cruzi, Leishmania donovani) and antitubercular ( Mycobacterium tuberculosis) potential of samples of two terrestrial cyanobacteria, Nostoc commune (collected when desiccated and wet) and Rivularia biasolettiana. The cytotoxic potential of the extracts was also evaluated against primary L6 cells. Except for T. cruzi and M. tuberculosis, the crude extracts were active against all the organisms tested and showed no toxicity. The crude extracts were then partitioned between n-hexane, chloroform and aqueous methanol and retested against the same panel of pathogens. The chloroform sub-extracts of both N. commune samples showed significant activity against T. b. rhodesiense (IC50 values 2.0 and 3.5 μg/mL) and P. falciparum (IC50S 7.4 and 5.8 μg/mL), with low toxicity. This trend was also true for R. biasolettiana extracts, and its chloroform sub-extract showed notable activity against all parasitic protozoa. There were differences in the biological activity profiles of extracts derived from desiccated and hydrated forms of N. commune. To our knowledge, this is the first study assessing the anti-infective activity of desiccated and hydrated forms of N. commune, as well as R. biasolettiana. Furthermore, the present work reports such biological activity in terrestrial cyanobacteria from Ireland for the first time. These results warrant the further study of Irish terrestrial cyanobacteria as a valuable source of new natural product leads for the treatment of parasitic protozoal infections.
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Affiliation(s)
- Barbara Broniatowska
- Department of Pharmaceutical and Biological Chemistry, Centre for Pharmacognosy and Phytotherapy, School of Pharmacy, University of London, London WC1N 1AX, UK
| | - Andrea Allmendinger
- Department of Pharmaceutical and Biological Chemistry, Centre for Pharmacognosy and Phytotherapy, School of Pharmacy, University of London, London WC1N 1AX, UK
| | - Marcel Kaiser
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, CH-4002 Basel, Switzerland
| | - Damien Montamat-Sicotte
- Tuberculosis Research Unit, Department of Respiratory Medicine, National Heart and Lung Institute, Imperial College London, London W2 1PG, UK
| | - Suzie Hingley-Wilson
- Tuberculosis Research Unit, Department of Respiratory Medicine, National Heart and Lung Institute, Imperial College London, London W2 1PG, UK
| | - Ajit Lalvani
- Tuberculosis Research Unit, Department of Respiratory Medicine, National Heart and Lung Institute, Imperial College London, London W2 1PG, UK
| | - Michael Guiry
- AlgaeBase, Ryan Institute, National University of Ireland Galway, University Road, Galway, Ireland
| | - Gerald Blunden
- School of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth, PO1 2DT, UK
| | - Deniz Tasdemir
- Department of Pharmaceutical and Biological Chemistry, Centre for Pharmacognosy and Phytotherapy, School of Pharmacy, University of London, London WC1N 1AX, UK
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Guantai E, Chibale K. How can natural products serve as a viable source of lead compounds for the development of new/novel anti-malarials? Malar J 2011; 10 Suppl 1:S2. [PMID: 21411013 PMCID: PMC3059460 DOI: 10.1186/1475-2875-10-s1-s2] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Malaria continues to be an enormous global health challenge, with millions of new infections and deaths reported annually. This is partly due to the development of resistance by the malaria parasite to the majority of established anti-malarial drugs, a situation that continues to hamper attempts at controlling the disease. This has spurred intensive drug discovery endeavours geared towards identifying novel, highly active anti-malarial drugs, and the identification of quality leads from natural sources would greatly augment these efforts. The current reality is that other than compounds that have their foundation in historic natural products, there are no other compounds in drug discovery as part of lead optimization projects and preclinical development or further that have originated from a natural product start-point in recent years. This paper briefly presents both classical as well as some more modern, but underutilized, approaches that have been applied outside the field of malaria, and which could be considered in enhancing the potential of natural products to provide or inspire the development of anti-malarial lead compounds.
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Affiliation(s)
- Eric Guantai
- Department of Chemistry, University of Cape Town, Rondebosch, 7701, South Africa
| | - Kelly Chibale
- Department of Chemistry, University of Cape Town, Rondebosch, 7701, South Africa
- Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Rondebosch, 7701, South Africa
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Abstract
Malaria is a human infectious disease that is caused by four species of Plasmodium. It is responsible for more than 1 million deaths per year. Natural products contain a great variety of chemical structures and have been screened for antiplasmodial activity as potential sources of new antimalarial drugs. This review highlights studies on natural products with antimalarial and antiplasmodial activity reported in the literature from January 2009 to November 2010. A total of 360 antiplasmodial natural products comprised of terpenes, including iridoids, sesquiterpenes, diterpenes, terpenoid benzoquinones, steroids, quassinoids, limonoids, curcubitacins, and lanostanes; flavonoids; alkaloids; peptides; phenylalkanoids; xanthones; naphthopyrones; polyketides, including halenaquinones, peroxides, polyacetylenes, and resorcylic acids; depsidones; benzophenones; macrolides; and miscellaneous compounds, including halogenated compounds and chromenes are listed in this review.
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Affiliation(s)
| | - Lucia M. X. Lopes
- Author to whom correspondence should be addressed; ; Tel.: +55-16-33019663; Fax: +55-16-33019692
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Blunt JW, Copp BR, Munro MHG, Northcote PT, Prinsep MR. Marine natural products. Nat Prod Rep 2010; 28:196-268. [PMID: 21152619 DOI: 10.1039/c005001f] [Citation(s) in RCA: 343] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
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Carroll AR, Duffy S, Avery VM. Aplidiopsamine A, an antiplasmodial alkaloid from the temperate Australian ascidian, Aplidiopsis confluata. J Org Chem 2010; 75:8291-4. [PMID: 21043526 DOI: 10.1021/jo101695v] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A polyaromatic alkaloid, aplidiopsamine A was isolated from the temperate Australian ascidian, Aplidiopsis confluata, and its structure was determined from interpretation of mass, 1D and 2D NMR spectra. Aplidiopsamine A is the first alkaloid to possess the tricyclic aromatic substructure 3H-pyrrolo[2,3-c]quinoline conjugated to an adenine. Aplidiopsamine A exhibited significant inhibition of growth of chloroquine resistant and sensitive strains of the malaria parasite, Plasmodium falciparum, and minimal toxicity toward human cells.
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Affiliation(s)
- Anthony R Carroll
- Environmental Futures Centre, Griffith University, Gold Coast, QLD 4222, Australia.
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Pinkerton D, Banwell M, Garson M, Kumar N, de Moraes M, Cavalcanti B, Barros F, Pessoa C. Antimicrobial and Cytotoxic Activities of Synthetically Derived Tambjamines C and E - J, BE-18591, and a Related Alkaloid from the Marine Bacterium Pseudoalteromonas tunicata. Chem Biodivers 2010; 7:1311-24. [DOI: 10.1002/cbdv.201000030] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Andavan GSB, Lemmens-Gruber R. Cyclodepsipeptides from marine sponges: natural agents for drug research. Mar Drugs 2010; 8:810-34. [PMID: 20411126 PMCID: PMC2857363 DOI: 10.3390/md8030810] [Citation(s) in RCA: 107] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2010] [Revised: 03/04/2010] [Accepted: 03/19/2010] [Indexed: 11/24/2022] Open
Abstract
A number of natural products from marine sponges, such as cyclodepsipeptides, have been identified. The structural characteristics of this family of cyclic peptides include various unusual amino acid residues and unique N-terminal polyketide-derived moieties. Papuamides are representatives of a class of marine sponge derived cyclic depsipeptides, including callipeltin A, celebesides A and B, homophymine A, mirabamides, microspinosamide, neamphamide A and theopapuamides. They are thought to have cytoprotective activity against HIV-1 in vitro by inhibiting viral entry. Jasplakinolide, a representative member of marine sponge-derived cyclodepsipeptides that include arenastatin A, geodiamolides, homophymines, spongidepsin and theopapuamides, is a potent inducer of actin polymerization in vitro. Although actin dynamics is essential for tumor metasasis, no actin targeting drugs have been used in clinical trials due to their severe cytotoxicity. Nonetheless, the actin cytoskeleton remains a potential target for anti-cancer drug development. These features imply the use of cyclodepsipeptides as molecular models in drug research.
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Affiliation(s)
| | - Rosa Lemmens-Gruber
- * Author to whom correspondence should be addressed; E-Mail:
; Tel.: +43-1-4277-55325; Fax: +43-1-4277-9553
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Bonazzi S, Barbaras D, Patiny L, Scopelliti R, Schneider P, Cole ST, Kaiser M, Brun R, Gademann K. Antimalarial and antitubercular nostocarboline and eudistomin derivatives: synthesis, in vitro and in vivo biological evaluation. Bioorg Med Chem 2010; 18:1464-76. [PMID: 20133138 DOI: 10.1016/j.bmc.2010.01.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2009] [Revised: 01/05/2010] [Accepted: 01/06/2010] [Indexed: 10/20/2022]
Abstract
The synthesis of nine nostocarboline derivatives with substitutions of the 2-methyl group by alkyl, aryl and functionalized residues, 10 symmetrical bis cationic dimers linking 6-Cl-norharmane through the 2-position and fifteen derivatives of the marine alkaloids eudistomin N and O is reported. These compounds were evaluated in vitro against four parasites (Trypanosoma brucei rhodesiense STIB 900, Trypanosoma cruzi Tulahuen C2C4, Leishmania donovani MHOM-ET-67/L82 axenic amastigotes, and Plasmodium falciparum K1 strain), against Mycobacterium tuberculosis H37Rv, Mycobacterium smegmatis mc(2)155 and Corynebacterium glutamicum ATCC13032, and cytotoxicity was determined against L6 rat myoblast cells. Nostocarboline and derivatives displayed potent and selective in vitro inhibition of P. falciparum with weak cytotoxicity. The dimers displayed submicromolar inhibition of L. donovani and T. brucei, and nanomolar activity against P. falciparum, albeit with pronounced cytotoxicity. One dimer showed a MIC(99) value against M. tuberculosis of 2.5 microg/ml. The alkylated eudistomin N and O derivatives displayed activities down to 18 nM against P. falciparum for N-Me Eudistomin N. Four dimers, nostocarboline and three eudostomin derivatives were evaluated in an in vivo Plasmodium berghei mouse model. No significant activity was observed for the dimers, but a 50% reduction in parasitaemia was observed at 4 x 50 mg/kg ip for nostocarboline.
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Affiliation(s)
- Simone Bonazzi
- Chemical Synthesis Laboratory (SB-ISIC-LSYNC), Swiss Federal Institute of Technology (EPFL), CH-1015 Lausanne, Switzerland
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Abstract
Agelasines, asmarines and related compounds are natural products with a hybrid terpene-purine structure isolated from numerous genera of sponges (Agela sp., Raspailia sp.). Some agelasine analogs and related structures have displayed high general toxicity towards protozoa, and have exhibited broad-spectrum antimicrobial activity against a variety of species, including Mycobacterium tuberculosis, and also an important cytotoxic activity against several cancer cell lines, including multidrug-resistant ones. Of particular interest in this context are the asmarines (tetrahydro[1,4]diazepino[1,2,3-g,h]purines), which have shown potent antiproliferative activity against several types of human cancer cell lines. This review summarizes the sources of isolation, chemistry and bioactivity of marine alkylpurines and their bioactive derivatives.
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Lebouvier N, Jullian V, Desvignes I, Maurel S, Parenty A, Dorin-Semblat D, Doerig C, Sauvain M, Laurent D. Antiplasmodial activities of homogentisic acid derivative protein kinase inhibitors isolated from a Vanuatu marine sponge Pseudoceratina sp. Mar Drugs 2009; 7:640-53. [PMID: 20098604 PMCID: PMC2810230 DOI: 10.3390/md7040640] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2009] [Revised: 11/17/2009] [Accepted: 11/23/2009] [Indexed: 11/17/2022] Open
Abstract
As part of our search for new antimalarial drugs in South Pacific marine sponges, we have looked for inhibitors of Pfnek-1, a specific protein kinase of Plasmodium falciparum. On the basis of promising activity in a preliminary screening, the ethanolic crude extract of a new species of Pseudoceratina collected in Vanuatu was selected for further investigation. A bioassay-guided fractionation led to the isolation of a derivative of homogentisic acid [methyl (2,4-dibromo-3,6-dihydroxyphenyl)acetate, 4a] which inhibited Pfnek-1 with an IC(50) around 1.8 muM. This product was moderately active in vitro against a FcB1 P. falciparum strain (IC(50) = 12 muM). From the same sponge, we isolated three known compounds [11,19-dideoxyfistularin-3 (1), 11-deoxyfistularin-3 (2) and dibromo-verongiaquinol (3)] which were inactive against Pfnek-1. Synthesis and biological evaluation of some derivatives of 4a are reported.
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Affiliation(s)
- Nicolas Lebouvier
- Laboratoire de Chimie, Université de la Nouvelle-Calédonie, BP R4, 98851 Nouméa cedex, New Caledonia; E-Mails:
(I.D.);
(A.P.)
| | - Valérie Jullian
- Laboratoire de Pharmacochimie des Substances Naturelles et Pharmacophores Redox, Université de Toulouse, UPS, UMR 152, 118, rte de Narbonne, F-31062 Toulouse cedex 9, France; E-Mails:
(V.J.);
(S.M.);
(M.S.);
(D.L.)
- Institut de Recherche pour le Développement (IRD); UMR 152, 118, rte de Narbonne, F-31062 Toulouse cedex 9, France
| | - Isabelle Desvignes
- Laboratoire de Chimie, Université de la Nouvelle-Calédonie, BP R4, 98851 Nouméa cedex, New Caledonia; E-Mails:
(I.D.);
(A.P.)
| | - Séverine Maurel
- Laboratoire de Pharmacochimie des Substances Naturelles et Pharmacophores Redox, Université de Toulouse, UPS, UMR 152, 118, rte de Narbonne, F-31062 Toulouse cedex 9, France; E-Mails:
(V.J.);
(S.M.);
(M.S.);
(D.L.)
- Institut de Recherche pour le Développement (IRD); UMR 152, 118, rte de Narbonne, F-31062 Toulouse cedex 9, France
| | - Arnaud Parenty
- Laboratoire de Chimie, Université de la Nouvelle-Calédonie, BP R4, 98851 Nouméa cedex, New Caledonia; E-Mails:
(I.D.);
(A.P.)
| | - Dominique Dorin-Semblat
- INSERM U609, Global Health Institute, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland; E-Mails:
(D.D.-S.);
(C.D.)
- Wellcome Centre for Molecular Parasitology, University of Glasgow, Glasgow G12 8TA, Scotland, UK
| | - Christian Doerig
- INSERM U609, Global Health Institute, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland; E-Mails:
(D.D.-S.);
(C.D.)
- Wellcome Centre for Molecular Parasitology, University of Glasgow, Glasgow G12 8TA, Scotland, UK
| | - Michel Sauvain
- Laboratoire de Pharmacochimie des Substances Naturelles et Pharmacophores Redox, Université de Toulouse, UPS, UMR 152, 118, rte de Narbonne, F-31062 Toulouse cedex 9, France; E-Mails:
(V.J.);
(S.M.);
(M.S.);
(D.L.)
- Institut de Recherche pour le Développement (IRD); UMR 152, 118, rte de Narbonne, F-31062 Toulouse cedex 9, France
| | - Dominique Laurent
- Laboratoire de Pharmacochimie des Substances Naturelles et Pharmacophores Redox, Université de Toulouse, UPS, UMR 152, 118, rte de Narbonne, F-31062 Toulouse cedex 9, France; E-Mails:
(V.J.);
(S.M.);
(M.S.);
(D.L.)
- Institut de Recherche pour le Développement (IRD); UMR 152, 118, rte de Narbonne, F-31062 Toulouse cedex 9, France
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Kim K, Ham Y, Moon J, Kim M, Kim D, Lee W, Lee N, Hyun C. In vitro Cytotoxic Activity of Sargassum thunbergii and Dictyopteris divaricata (Jeju Seaweeds) on the HL-60 Tumour Cell Line. INT J PHARMACOL 2009. [DOI: 10.3923/ijp.2009.298.306] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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