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Zhang H, Cai J, Yu S, Sun B, Zhang W. Anticancer Small-Molecule Agents Targeting Eukaryotic Elongation Factor 1A: State of the Art. Int J Mol Sci 2023; 24:ijms24065184. [PMID: 36982256 PMCID: PMC10049629 DOI: 10.3390/ijms24065184] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/05/2023] [Accepted: 03/07/2023] [Indexed: 03/29/2023] Open
Abstract
Eukaryotic elongation factor 1A (eEF1A) canonically delivers amino acyl tRNA to the ribosomal A site during the elongation stage of protein biosynthesis. Yet paradoxically, the oncogenic nature of this instrumental protein has long been recognized. Consistently, eEF1A has proven to be targeted by a wide assortment of small molecules with excellent anticancer activity, among which plitidepsin has been granted approval for the treatment of multiple myeloma. Meanwhile, metarrestin is currently under clinical development for metastatic cancers. Bearing these exciting advances in mind, it would be desirable to present a systematic up-to-date account of the title topic, which, to the best of our knowledge, has thus far been unavailable in the literature. The present review summarizes recent advances in eEF1A-targeting anticancer agents, both naturally occurring and synthetically crafted, with regard to their discovery or design, target identification, structure–activity relationship, and mode of action. Their structural diversity and differential eEF1A-targeting mechanisms warrant continuing research in pursuit of curing eEF1A-driven malignancy.
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Stankey RJ, Johnson D, Duggan BM, Mead DA, La Clair JJ. A Survey of Didemnin Depsipeptide Production in Tistrella. Mar Drugs 2023; 21:md21020056. [PMID: 36827097 PMCID: PMC9964501 DOI: 10.3390/md21020056] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/07/2023] [Accepted: 01/12/2023] [Indexed: 01/19/2023] Open
Abstract
As one of the first families of marine natural products to undergo clinical trials, the didemnin depsipeptides have played a significant role in inspiring the discovery of marine drugs. Originally developed as anticancer therapeutics, the recent re-evaluation of these compounds including synthetically derived dehydrodidemnin B or Aplidine, has led to their advancement towards antiviral applications. While conventionally associated with production in colonial tunicates of the family Didemnidae, recent studies have identified their biosynthetic gene clusters from the marine-derived bacteria Tistrella mobilis. While these studies confirm the production of didemnin X/Y, the low titer and general lack of understanding of their biosynthesis in Tistrella currently prevents the development of effective microbial or synthetic biological approaches for their production. To this end, we conducted a survey of known species of Tistrella and report on their ability to produce the didemnin depsipeptides. These data were used to develop conditions to produce didemnin B at titers over 15 mg/L.
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Affiliation(s)
| | - Don Johnson
- Terra Bioworks Inc., Middleton, WI 53562, USA
| | - Brendan M. Duggan
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, 9500 Gilman Drive, San Diego, CA 92093-0657, USA
| | - David A. Mead
- Terra Bioworks Inc., Middleton, WI 53562, USA
- Correspondence: (D.A.M.); (J.J.L.C.)
| | - James J. La Clair
- Department of Chemistry and Biochemistry, University of California, San Diego, CA 92093-0358, USA
- Xenobe Research Institute, P.O. Box 3052, San Diego, CA 92163-1052, USA
- Correspondence: (D.A.M.); (J.J.L.C.)
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3
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Ahmed S, Alam W, Jeandet P, Aschner M, Alsharif KF, Saso L, Khan H. Therapeutic Potential of Marine Peptides in Prostate Cancer: Mechanistic Insights. Mar Drugs 2022; 20:md20080466. [PMID: 35892934 PMCID: PMC9330892 DOI: 10.3390/md20080466] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/15/2022] [Accepted: 07/18/2022] [Indexed: 02/07/2023] Open
Abstract
Prostate cancer (PCa) is the leading cause of cancer death in men, and its treatment is commonly associated with severe adverse effects. Thus, new treatment modalities are required. In this context, natural compounds have been widely explored for their anti-PCa properties. Aquatic organisms contain numerous potential medications. Anticancer peptides are less toxic to normal cells and provide an efficacious treatment approach via multiple mechanisms, including altered cell viability, apoptosis, cell migration/invasion, suppression of angiogenesis and microtubule balance disturbances. This review sheds light on marine peptides as efficacious and safe therapeutic agents for PCa.
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Affiliation(s)
- Salman Ahmed
- Department of Pharmacognosy, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi 75270, Pakistan;
| | - Waqas Alam
- Department of Pharmacy, Abdul Wali Khan University, Mardan 23200, Pakistan;
| | - Philippe Jeandet
- Research Unit “Induced Resistance and Plant Bioprotection”, Department of Biology and Biochemistry, Faculty of Sciences, University of Reims, EA 4707-USC INRAe 1488, SFR Condorcet FR CNRS 3417, P.O. Box 1039, CEDEX 02, 51687 Reims, France;
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA;
| | - Khalaf F. Alsharif
- Department of Clinical Laboratory, College of Applied Medical Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;
| | - Luciano Saso
- Department of Physiology and Pharmacology, “Vittorio Erspamer” Sapienza University, 00185 Rome, Italy;
| | - Haroon Khan
- Department of Pharmacy, Abdul Wali Khan University, Mardan 23200, Pakistan;
- Correspondence:
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4
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Rauf A, Khalil AA, Khan M, Anwar S, Alamri A, Alqarni AM, Alghamdi A, Alshammari F, Rengasamy KRR, Wan C. Can be marine bioactive peptides (MBAs) lead the future of foodomics for human health? Crit Rev Food Sci Nutr 2022; 62:7072-7116. [PMID: 33840324 DOI: 10.1080/10408398.2021.1910482] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Marine organisms are considered a cache of biologically active metabolites with pharmaceutical, functional, and nutraceutical properties. Among these, marine bioactive peptides (MBAs) present in diverse marine species (fish, sponges, cyanobacteria, fungi, ascidians, seaweeds, & mollusks) have acquired attention owing to their broad-spectrum health-promoting benefits. Nowadays, scientists are keener exploring marine bioactive peptides precisely due to their unique structural and biological properties. These MBAs have reported ameliorating potential against different diseases like hypertension, diabetes, obesity, HIV, cancer, oxidation, and inflammation. Furthermore, MBAs isolated from various marine organisms may also have a beneficial role in the cosmetic, nutraceutical, and food industries. Few marine peptides and their derivative are approved for commercial use, while many MBAs are in various pre-clinical and clinical trials. This review mainly focuses on the diversity of marine bioactive peptides in marine organisms and their production procedures, such as chemical and enzymatic hydrolysis. Moreover, MBAs' therapeutic and biological potential has also been critically discussed herein, along with their status in drug discovery, pre-clinical and clinical trials.
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Affiliation(s)
- Abdur Rauf
- Department of Chemistry, University of Swabi, Anbar, Khyber Pakhtunkhwa, Pakistan
| | - Anees Ahmed Khalil
- University Institute of Diet and Nutritional Sciences, Faculty of Allied Health Sciences, The University of Lahore, Lahore, Pakistan
| | - Muneeb Khan
- Department of Human Nutrition and Dietetics, Riphah College of Rehabilitation and Allied Health Sciences, Riphah International University, Lahore, Pakistan
| | - Sirajudheen Anwar
- Department of Pharmacology and Toxicology, University of Hail, Hail, Saudi Arabia
| | - Abdulwahab Alamri
- Department of Pharmacology and Toxicology, University of Hail, Hail, Saudi Arabia
| | - Abdulmalik M Alqarni
- Department of Pharmaceutical Chemistry, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Adel Alghamdi
- Pharmaceutical Chemistry Department, Faculty of Clinical Pharmacy, Al Baha University, Al Baha, Saudi Arabia
| | - Farhan Alshammari
- Department Of Pharmaceutics, College of Pharmacy, University of Hail, Hail, Saudi Arabia
| | - Kannan R R Rengasamy
- Green Biotechnologies Research Centre of Excellence, University of Limpopo, Polokwane, Sovenga, South Africa
| | - Chunpeng Wan
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits & Vegetables, College of Agronomy, Jiangxi Agricultural University, Nanchang, People's Republic of China
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5
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Zhang JN, Xia YX, Zhang HJ. Natural Cyclopeptides as Anticancer Agents in the Last 20 Years. Int J Mol Sci 2021; 22:3973. [PMID: 33921480 PMCID: PMC8068844 DOI: 10.3390/ijms22083973] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 04/06/2021] [Accepted: 04/09/2021] [Indexed: 12/24/2022] Open
Abstract
Cyclopeptides or cyclic peptides are polypeptides formed by ring closing of terminal amino acids. A large number of natural cyclopeptides have been reported to be highly effective against different cancer cells, some of which are renowned for their clinical uses. Compared to linear peptides, cyclopeptides have absolute advantages of structural rigidity, biochemical stability, binding affinity as well as membrane permeability, which contribute greatly to their anticancer potency. Therefore, the discovery and development of natural cyclopeptides as anticancer agents remains attractive to academic researchers and pharmaceutical companies. Herein, we provide an overview of anticancer cyclopeptides that were discovered in the past 20 years. The present review mainly focuses on the anticancer efficacies, mechanisms of action and chemical structures of cyclopeptides with natural origins. Additionally, studies of the structure-activity relationship, total synthetic strategies as well as bioactivities of natural cyclopeptides are also included in this article. In conclusion, due to their characteristic structural features, natural cyclopeptides have great potential to be developed as anticancer agents. Indeed, they can also serve as excellent scaffolds for the synthesis of novel derivatives for combating cancerous pathologies.
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Affiliation(s)
| | | | - Hong-Jie Zhang
- Teaching and Research Division, School of Chinese Medicine, Hong Kong Baptist University, Kowloon, Hong Kong SAR, China; (J.-N.Z.); (Y.-X.X.)
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6
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Wilke DV, Jimenez PC, Branco PC, Rezende-Teixeira P, Trindade-Silva AE, Bauermeister A, Lopes NP, Costa-Lotufo LV. Anticancer Potential of Compounds from the Brazilian Blue Amazon. PLANTA MEDICA 2021; 87:49-70. [PMID: 33142347 DOI: 10.1055/a-1257-8402] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
"Blue Amazon" is used to designate the Brazilian Economic Exclusive Zone, which covers an area comparable in size to that of its green counterpart. Indeed, Brazil flaunts a coastline spanning 8000 km through tropical and temperate regions and hosting part of the organisms accredited for the country's megadiversity status. Still, biodiversity may be expressed at different scales of organization; besides species inventory, genetic characteristics of living beings and metabolic expression of their genes meet some of these other layers. These metabolites produced by terrestrial creatures traditionally and lately added to by those from marine organisms are recognized for their pharmaceutical value, since over 50% of small molecule-based medicines are related to natural products. Nonetheless, Brazil gives a modest contribution to the field of pharmacology and even less when considering marine pharmacology, which still lacks comprehensive in-depth assessments toward the bioactivity of marine compounds so far. Therefore, this review examined the last 40 years of Brazilian natural products research, focusing on molecules that evidenced anticancer potential-which represents ~ 15% of marine natural products isolated from Brazilian species. This review discusses the most promising compounds isolated from sponges, cnidarians, ascidians, and microbes in terms of their molecular targets and mechanisms of action. Wrapping up, the review delivers an outlook on the challenges that stand against developing groundbreaking natural products research in Brazil and on a means of surpassing these matters.
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Affiliation(s)
- Diego V Wilke
- Núcleo de Pesquisa e Desenvolvimento de Medicamentos (NPDM), Departamento de Fisiologia e Farmacologia, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brazil
| | - Paula C Jimenez
- Departamento de Ciências do Mar, Instituto do Mar, Universidade Federal de São Paulo, Santos, SP, Brazil
| | - Paola C Branco
- Departamento de Farmacologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Paula Rezende-Teixeira
- Departamento de Farmacologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Amaro E Trindade-Silva
- Núcleo de Pesquisa e Desenvolvimento de Medicamentos (NPDM), Departamento de Fisiologia e Farmacologia, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brazil
| | - Anelize Bauermeister
- Departamento de Farmacologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Norberto Peporine Lopes
- Núcleo de Pesquisa em Produtos Naturais e Sintéticos (NPPNS), Departamento de Ciências Biomoleculares, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Leticia V Costa-Lotufo
- Departamento de Farmacologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
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Patra S, Praharaj PP, Panigrahi DP, Panda B, Bhol CS, Mahapatra KK, Mishra SR, Behera BP, Jena M, Sethi G, Patil S, Patra SK, Bhutia SK. Bioactive compounds from marine invertebrates as potent anticancer drugs: the possible pharmacophores modulating cell death pathways. Mol Biol Rep 2020; 47:7209-7228. [PMID: 32797349 DOI: 10.1007/s11033-020-05709-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 08/02/2020] [Indexed: 12/24/2022]
Abstract
Marine invertebrates are extremely diverse, largely productive, untapped oceanic resources with chemically unique bioactive lead compound contributing a wide range of screening for the discovery of anticancer compounds. The lead compounds have unfurled an extensive array of pharmacological properties owing to the presence of polyphenols, alkaloids, terpenoids and other secondary metabolites. The antioxidant, immunomodulatory and anti-tumor activities exhibited, are possibly regulated by the apoptosis induction, scavenging of ROS and modulation of cellular signaling pathways to defy the cellular deafness during carcinogenesis. Despite the enriched bioactive compounds, the marine invertebrates are largely unexplored as identification, screening, pre-clinical and clinical assessment of lead compounds and their synthetic analogs remain a major task to be solved. In the current review, we focus on the principle strategy and underlying mechanisms deployed by the bioactive anticancer compounds derived from marine invertebrates to combat cancer with special insight into the cell death mechanism.
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Affiliation(s)
- Srimanta Patra
- Cancer and Cell Death Laboratory, Department of Life Science, National Institute of Technology Rourkela, Rourkela, 769008, India
| | - Prakash Priyadarshi Praharaj
- Cancer and Cell Death Laboratory, Department of Life Science, National Institute of Technology Rourkela, Rourkela, 769008, India
| | - Debasna Pritimanjari Panigrahi
- Cancer and Cell Death Laboratory, Department of Life Science, National Institute of Technology Rourkela, Rourkela, 769008, India
| | - Biswajit Panda
- College of Basic Science & Humanities OUAT, Bhubaneswar, 751003, India
| | - Chandra Sekhar Bhol
- Cancer and Cell Death Laboratory, Department of Life Science, National Institute of Technology Rourkela, Rourkela, 769008, India
| | - Kewal Kumar Mahapatra
- Cancer and Cell Death Laboratory, Department of Life Science, National Institute of Technology Rourkela, Rourkela, 769008, India
| | - Soumya Ranjan Mishra
- Cancer and Cell Death Laboratory, Department of Life Science, National Institute of Technology Rourkela, Rourkela, 769008, India
| | - Bishnu Prasad Behera
- Cancer and Cell Death Laboratory, Department of Life Science, National Institute of Technology Rourkela, Rourkela, 769008, India
| | - Mrutyunjay Jena
- PG Department of Botany, Berhampur University, Berhampur, 760007, India
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117600, Singapore
| | - Shankargouda Patil
- Department of Maxillofacial Surgery and Diagnostic Sciences, Division of Oral Pathology, College of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - Samir Kumar Patra
- Epigenetics and Cancer Research Laboratory, Department of Life Science, National Institute of Technology Rourkela, Rourkela, 769008, India
| | - Sujit Kumar Bhutia
- Cancer and Cell Death Laboratory, Department of Life Science, National Institute of Technology Rourkela, Rourkela, 769008, India. .,Department of Life Science, National Institute of Technology Rourkela, Rourkela, Odisha, 769008, India.
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Li Y, Yu HB, Zhang Y, Leao T, Glukhov E, Pierce ML, Zhang C, Kim H, Mao HH, Fang F, Cottrell GW, Murray TF, Gerwick L, Guan H, Gerwick WH. Pagoamide A, a Cyclic Depsipeptide Isolated from a Cultured Marine Chlorophyte, Derbesia sp., Using MS/MS-Based Molecular Networking. JOURNAL OF NATURAL PRODUCTS 2020; 83:617-625. [PMID: 31916778 PMCID: PMC7210564 DOI: 10.1021/acs.jnatprod.9b01019] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
A thiazole-containing cyclic depsipeptide with 11 amino acid residues, named pagoamide A (1), was isolated from laboratory cultures of a marine Chlorophyte, Derbesia sp. This green algal sample was collected from America Samoa, and pagoamide A was isolated using guidance by MS/MS-based molecular networking. Cultures were grown in a light- and temperature-controlled environment and harvested after several months of growth. The planar structure of pagoamide A (1) was characterized by detailed 1D and 2D NMR experiments along with MS and UV analysis. The absolute configurations of its amino acid residues were determined by advanced Marfey's analysis following chemical hydrolysis and hydrazinolysis reactions. Two of the residues in pagoamide A (1), phenylalanine and serine, each occurred twice in the molecule, once in the d- and once in the l-configuration. The biosynthetic origin of pagoamide A (1) was considered in light of other natural products investigations with coenocytic green algae.
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Affiliation(s)
- Yueying Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People’s Republic of China
- University of California, San Diego, La Jolla, California 92093, United States
| | - Hao-Bing Yu
- University of California, San Diego, La Jolla, California 92093, United States
- Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences, Second Military Medical University, Shanghai 200433, People’s Republic of China
| | - Yi Zhang
- University of California, San Diego, La Jolla, California 92093, United States
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, People’s Republic of China
| | - Tiago Leao
- University of California, San Diego, La Jolla, California 92093, United States
| | - Evgenia Glukhov
- University of California, San Diego, La Jolla, California 92093, United States
| | - Marsha L. Pierce
- Department of Pharmacology, School of Medicine, Creighton University, Omaha, Nebraska 68178, United States
| | - Chen Zhang
- University of California, San Diego, La Jolla, California 92093, United States
- Department of Computer Sciences and Engineering, University of California, San Diego, La Jolla, California 92093, United States
| | - Hyunwoo Kim
- University of California, San Diego, La Jolla, California 92093, United States
| | - Huanru Henry Mao
- Department of Computer Sciences and Engineering, University of California, San Diego, La Jolla, California 92093, United States
| | - Fang Fang
- University of California, San Diego, La Jolla, California 92093, United States
| | - Garrison W. Cottrell
- Department of Computer Sciences and Engineering, University of California, San Diego, La Jolla, California 92093, United States
| | - Thomas F. Murray
- Department of Pharmacology, School of Medicine, Creighton University, Omaha, Nebraska 68178, United States
| | - Lena Gerwick
- University of California, San Diego, La Jolla, California 92093, United States
| | - Huashi Guan
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People’s Republic of China
| | - William H. Gerwick
- University of California, San Diego, La Jolla, California 92093, United States
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, California 92093, United States
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From Seabed to Bedside: A Review on Promising Marine Anticancer Compounds. Biomolecules 2020; 10:biom10020248. [PMID: 32041255 PMCID: PMC7072248 DOI: 10.3390/biom10020248] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 01/29/2020] [Accepted: 02/04/2020] [Indexed: 02/08/2023] Open
Abstract
The marine environment represents an outstanding source of antitumoral compounds and, at the same time, remains highly unexplored. Organisms living in the sea synthesize a wide variety of chemicals used as defense mechanisms. Interestingly, a large number of these compounds exert excellent antitumoral properties and have been developed as promising anticancer drugs that have later been approved or are currently under validation in clinical trials. However, due to the high need for these compounds, new methodologies ensuring its sustainable supply are required. Also, optimization of marine bioactives is an important step for their success in the clinical setting. Such optimization involves chemical modifications to improve their half-life in circulation, potency and tumor selectivity. In this review, we outline the most promising marine bioactives that have been investigated in cancer models and/or tested in patients as anticancer agents. Moreover, we describe the current state of development of anticancer marine compounds and discuss their therapeutic limitations as well as different strategies used to overcome these limitations. The search for new marine antitumoral agents together with novel identification and chemical engineering approaches open the door for novel, more specific and efficient therapeutic agents for cancer treatment.
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10
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Therapeutic Properties and Biological Benefits of Marine-Derived Anticancer Peptides. Int J Mol Sci 2018; 19:ijms19030919. [PMID: 29558431 PMCID: PMC5877780 DOI: 10.3390/ijms19030919] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 03/07/2018] [Accepted: 03/16/2018] [Indexed: 01/01/2023] Open
Abstract
Various organisms exist in the oceanic environment. These marine organisms provide an abundant source of potential medicines. Many marine peptides possess anticancer properties, some of which have been evaluated for treatment of human cancer in clinical trials. Marine anticancer peptides kill cancer cells through different mechanisms, such as apoptosis, disruption of the tubulin-microtubule balance, and inhibition of angiogenesis. Traditional chemotherapeutic agents have side effects and depress immune responses. Thus, the research and development of novel anticancer peptides with low toxicity to normal human cells and mechanisms of action capable of avoiding multi-drug resistance may provide a new method for anticancer treatment. This review provides useful information on the potential of marine anticancer peptides for human therapy.
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11
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Phyo YZ, Ribeiro J, Fernandes C, Kijjoa A, Pinto MMM. Marine Natural Peptides: Determination of Absolute Configuration Using Liquid Chromatography Methods and Evaluation of Bioactivities. Molecules 2018; 23:E306. [PMID: 29385101 PMCID: PMC6017543 DOI: 10.3390/molecules23020306] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 01/22/2018] [Accepted: 01/27/2018] [Indexed: 12/21/2022] Open
Abstract
Over the last decades, many naturally occurring peptides have attracted the attention of medicinal chemists due to their promising applicability as pharmaceuticals or as models for drugs used in therapeutics. Marine peptides are chiral molecules comprising different amino acid residues. Therefore, it is essential to establish the configuration of the stereogenic carbon of their amino acid constituents for a total characterization and further synthesis to obtain higher amount of the bioactive marine peptides or as a basis for structural modifications for more potent derivatives. Moreover, it is also a crucial issue taking into account the mechanisms of molecular recognition and the influence of molecular three-dimensionality in this process. In this review, a literature survey covering the report on the determination of absolute configuration of the amino acid residues of diverse marine peptides by chromatographic methodologies is presented. A brief summary of their biological activities was also included emphasizing to the most promising marine peptides. A case study describing an experience of our group was also included.
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Affiliation(s)
- Ye' Zaw Phyo
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Edifício do Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4050-208 Matosinhos, Portugal.
| | - João Ribeiro
- Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, Faculdade de Farmácia da Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
| | - Carla Fernandes
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Edifício do Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4050-208 Matosinhos, Portugal.
- Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, Faculdade de Farmácia da Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
| | - Anake Kijjoa
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Edifício do Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4050-208 Matosinhos, Portugal.
| | - Madalena M M Pinto
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Edifício do Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4050-208 Matosinhos, Portugal.
- Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, Faculdade de Farmácia da Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
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12
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Gogineni V, Hamann MT. Marine natural product peptides with therapeutic potential: Chemistry, biosynthesis, and pharmacology. Biochim Biophys Acta Gen Subj 2018; 1862:81-196. [PMID: 28844981 PMCID: PMC5918664 DOI: 10.1016/j.bbagen.2017.08.014] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 08/07/2017] [Accepted: 08/09/2017] [Indexed: 12/21/2022]
Abstract
The oceans are a uniquely rich source of bioactive metabolites, of which sponges have been shown to be among the most prolific producers of diverse bioactive secondary metabolites with valuable therapeutic potential. Much attention has been focused on marine bioactive peptides due to their novel chemistry and diverse biological properties. As summarized in this review, marine peptides are known to exhibit various biological activities such as antiviral, anti-proliferative, antioxidant, anti-coagulant, anti-hypertensive, anti-cancer, antidiabetic, antiobesity, and calcium-binding activities. This review focuses on the chemistry and biology of peptides isolated from sponges, bacteria, cyanobacteria, fungi, ascidians, and other marine sources. The role of marine invertebrate microbiomes in natural products biosynthesis is discussed in this review along with the biosynthesis of modified peptides from different marine sources. The status of peptides in various phases of clinical trials is presented, as well as the development of modified peptides including optimization of PK and bioavailability.
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Affiliation(s)
- Vedanjali Gogineni
- Department of BioMolecular Sciences, Division of Medicinal Chemistry, School of Pharmacy, The University of Mississippi, University, MS, United States.
| | - Mark T Hamann
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy and Public Health Sciences, Medical University of South Carolina, Charleston, SC, United States.
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Wang L, Dong C, Li X, Han W, Su X. Anticancer potential of bioactive peptides from animal sources (Review). Oncol Rep 2017; 38:637-651. [PMID: 28677775 DOI: 10.3892/or.2017.5778] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 04/10/2017] [Indexed: 11/06/2022] Open
Abstract
Cancer is the most common cause of human death worldwide. Conventional anticancer therapies, including chemotherapy and radiation, are associated with severe side effects and toxicities as well as low specificity. Peptides are rapidly being developed as potential anticancer agents that specifically target cancer cells and are less toxic to normal tissues, thus making them a better alternative for the prevention and management of cancer. Recent research has focused on anticancer peptides from natural animal sources, such as terrestrial mammals, marine animals, amphibians, and animal venoms. However, the mode of action by which bioactive peptides inhibit the proliferation of cancer cells remains unclear. In this review, we present the animal sources from which bioactive peptides with anticancer activity are derived and discuss multiple proposed mechanisms by which these peptides exert cytotoxic effects against cancer cells.
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Affiliation(s)
- Linghong Wang
- Clinical Medicine Research Center of the Affiliated Hospital, Inner Mongolia Medical University, Huimin, Hohhot, Inner Mongolia 010050, P.R. China
| | - Chao Dong
- College of Basic Medicine of Inner Mongolia Medical University, Huimin, Hohhot, Inner Mongolia 010050, P.R. China
| | - Xian Li
- Clinical Medicine Research Center of the Affiliated Hospital, Inner Mongolia Medical University, Huimin, Hohhot, Inner Mongolia 010050, P.R. China
| | - Wenyan Han
- Clinical Medicine Research Center of the Affiliated Hospital, Inner Mongolia Medical University, Huimin, Hohhot, Inner Mongolia 010050, P.R. China
| | - Xiulan Su
- Clinical Medicine Research Center of the Affiliated Hospital, Inner Mongolia Medical University, Huimin, Hohhot, Inner Mongolia 010050, P.R. China
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15
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Bioactive Peptide of Marine Origin for the Prevention and Treatment of Non-Communicable Diseases. Mar Drugs 2017; 15:md15030067. [PMID: 28282929 PMCID: PMC5367024 DOI: 10.3390/md15030067] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 03/02/2017] [Accepted: 03/06/2017] [Indexed: 12/21/2022] Open
Abstract
Non-communicable diseases (NCD) are the leading cause of death and disability worldwide. The four main leading causes of NCD are cardiovascular diseases, cancers, respiratory diseases and diabetes. Recognizing the devastating impact of NCD, novel prevention and treatment strategies are extensively sought. Marine organisms are considered as an important source of bioactive peptides that can exert biological functions to prevent and treatment of NCD. Recent pharmacological investigations reported cardio protective, anticancer, antioxidative, anti-diabetic, and anti-obesity effects of marine-derived bioactive peptides. Moreover, there is available evidence supporting the utilization of marine organisms and its bioactive peptides to alleviate NCD. Marine-derived bioactive peptides are alternative sources for synthetic ingredients that can contribute to a consumer's well-being, as a part of nutraceuticals and functional foods. This contribution focus on the bioactive peptides derived from marine organisms and elaborates its possible prevention and therapeutic roles in NCD.
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Seyed Razi N, Seydi E, Nazemi M, Arast Y, Pourahmad J. Selective Toxicity of Persian Gulf Sea Squirt (Phallusia nigra) Extract on Isolated Mitochondria Obtained from Liver Hepatocytes of Hepatocellular Carcinoma Induced Rat. HEPATITIS MONTHLY 2017; 17. [DOI: 10.5812/hepatmon.41489] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
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17
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Fang WY, Dahiya R, Qin HL, Mourya R, Maharaj S. Natural Proline-Rich Cyclopolypeptides from Marine Organisms: Chemistry, Synthetic Methodologies and Biological Status. Mar Drugs 2016; 14:md14110194. [PMID: 27792168 PMCID: PMC5128737 DOI: 10.3390/md14110194] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Revised: 10/02/2016] [Accepted: 10/15/2016] [Indexed: 12/17/2022] Open
Abstract
Peptides have gained increased interest as therapeutics during recent years. More than 60 peptide drugs have reached the market for the benefit of patients and several hundreds of novel therapeutic peptides are in preclinical and clinical development. The key contributor to this success is the potent and specific, yet safe, mode of action of peptides. Among the wide range of biologically-active peptides, naturally-occurring marine-derived cyclopolypeptides exhibit a broad range of unusual and potent pharmacological activities. Because of their size and complexity, proline-rich cyclic peptides (PRCPs) occupy a crucial chemical space in drug discovery that may provide useful scaffolds for modulating more challenging biological targets, such as protein-protein interactions and allosteric binding sites. Diverse pharmacological activities of natural cyclic peptides from marine sponges, tunicates and cyanobacteria have encouraged efforts to develop cyclic peptides with well-known synthetic methods, including solid-phase and solution-phase techniques of peptide synthesis. The present review highlights the natural resources, unique structural features and the most relevant biological properties of proline-rich peptides of marine-origin, focusing on the potential therapeutic role that the PRCPs may play as a promising source of new peptide-based novel drugs.
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Affiliation(s)
- Wan-Yin Fang
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China.
| | - Rajiv Dahiya
- Laboratory of Peptide Research and Development, School of Pharmacy, Faculty of Medical Sciences, The University of the West Indies, Saint Augustine, Trinidad and Tobago, West Indies.
| | - Hua-Li Qin
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China.
| | - Rita Mourya
- School of Pharmacy, College of Medicine and Health Sciences, University of Gondar, Gondar 196, Ethiopia.
| | - Sandeep Maharaj
- Laboratory of Peptide Research and Development, School of Pharmacy, Faculty of Medical Sciences, The University of the West Indies, Saint Augustine, Trinidad and Tobago, West Indies.
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Agrawal S, Adholeya A, Deshmukh SK. The Pharmacological Potential of Non-ribosomal Peptides from Marine Sponge and Tunicates. Front Pharmacol 2016; 7:333. [PMID: 27826240 PMCID: PMC5078478 DOI: 10.3389/fphar.2016.00333] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 09/07/2016] [Indexed: 12/18/2022] Open
Abstract
Marine biodiversity is recognized by a wide and unique array of fascinating structures. The complex associations of marine microorganisms, especially with sponges, bryozoans, and tunicates, make it extremely difficult to define the biosynthetic source of marine natural products or to deduce their ecological significance. Marine sponges and tunicates are important source of novel compounds for drug discovery and development. Majority of these compounds are nitrogen containing and belong to non-ribosomal peptide (NRPs) or mixed polyketide-NRP natural products. Several of these peptides are currently under trial for developing new drugs against various disease areas, including inflammatory, cancer, neurodegenerative disorders, and infectious disease. This review features pharmacologically active NRPs from marine sponge and tunicates based on their biological activities.
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Affiliation(s)
| | | | - Sunil K. Deshmukh
- TERI–Deakin Nano Biotechnology Centre, The Energy and Resources InstituteNew Delhi, India
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20
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Jaffarali HA, Akram S, Arshan KM. Identification of four Indian ascidians based on COI gene sequences. Mitochondrial DNA A DNA Mapp Seq Anal 2016; 29:14-18. [PMID: 27728993 DOI: 10.1080/24701394.2016.1233531] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
DNA barcoding involving the sequencing of a short mitochondrial DNA segment, cytochrome c oxidase subunit 1 (COI) gene, is a specialized technique for the identification of species even at the early embryonic and larval stages, which is quite difficult in morphology-based taxonomy. Ascidians are sessile invertebrate chordates possessing numerous biochemical as well as pharmacological activities. In this study, a total of 36 ascidian samples belonging to the family Didemnidae were sequenced for a 650 bp region of the mitochondrial COI gene. All the species were represented by multiple specimens. The barcode sequences showed no stop-codons and indels in the alignments. The aligned sequences were submitted in Barcode submission tool, NCBI, and the accession numbers were obtained. The minimum intraspecific distance was found to be 0.00% and the maximum was 2.23%. Mean Kimura 2-parameter (K2P) distances within-species, genus, and family were 0.88, 5.98, and 20.03%, respectively. The mean interspecific distance is more than the mean intraspecific divergence, which indicates efficiency of DNA barcoding for identification of ascidians.
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Affiliation(s)
- H Abdul Jaffarali
- a Department of Biotechnology , Islamiah College , Vaniyambadi , Tamilnadu , India
| | - Soban Akram
- a Department of Biotechnology , Islamiah College , Vaniyambadi , Tamilnadu , India
| | - Kaleem Ml Arshan
- a Department of Biotechnology , Islamiah College , Vaniyambadi , Tamilnadu , India
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Pelay-Gimeno M, Albericio F, Tulla-Puche J. Synthesis of complex head-to-side-chain cyclodepsipeptides. Nat Protoc 2016; 11:1924-1947. [DOI: 10.1038/nprot.2016.116] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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22
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Jo C, Khan FF, Khan MI, Iqbal J. Marine bioactive peptides: Types, structures, and physiological functions. FOOD REVIEWS INTERNATIONAL 2016. [DOI: 10.1080/87559129.2015.1137311] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Hernández-Ledesma B, Hsieh CC. Chemopreventive role of food-derived proteins and peptides: A review. Crit Rev Food Sci Nutr 2015; 57:2358-2376. [DOI: 10.1080/10408398.2015.1057632] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Blanca Hernández-Ledesma
- Instituto de Investigación en Ciencias de la Alimentación (CIAL, CSIC-UAM, CEI UAM+CSIC), Madrid, Spain
| | - Chia-Chien Hsieh
- Department of Human Development and Family Studies (Nutritional Science and Education), National Taiwan Normal University, Taipei, Taiwan
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24
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Bandyopadhyay A, Malik A, Kumar MG, Gopi HN. Exploring β-Hydroxy γ-Amino Acids (Statines) in the Design of Hybrid Peptide Foldamers. Org Lett 2013; 16:294-7. [DOI: 10.1021/ol403290h] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Anupam Bandyopadhyay
- Department of Chemistry, Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pune-411 008, India
| | - Ankita Malik
- Department of Chemistry, Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pune-411 008, India
| | - Mothukuri Ganesh Kumar
- Department of Chemistry, Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pune-411 008, India
| | - Hosahudya N. Gopi
- Department of Chemistry, Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pune-411 008, India
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25
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Mulder KCL, Lima LA, Miranda VJ, Dias SC, Franco OL. Current scenario of peptide-based drugs: the key roles of cationic antitumor and antiviral peptides. Front Microbiol 2013; 4:321. [PMID: 24198814 PMCID: PMC3813893 DOI: 10.3389/fmicb.2013.00321] [Citation(s) in RCA: 134] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Accepted: 10/11/2013] [Indexed: 01/21/2023] Open
Abstract
Cationic antimicrobial peptides (AMPs) and host defense peptides (HDPs) show vast potential as peptide-based drugs. Great effort has been made in order to exploit their mechanisms of action, aiming to identify their targets as well as to enhance their activity and bioavailability. In this review, we will focus on both naturally occurring and designed antiviral and antitumor cationic peptides, including those here called promiscuous, in which multiple targets are associated with a single peptide structure. Emphasis will be given to their biochemical features, selectivity against extra targets, and molecular mechanisms. Peptides which possess antitumor activity against different cancer cell lines will be discussed, as well as peptides which inhibit virus replication, focusing on their applications for human health, animal health and agriculture, and their potential as new therapeutic drugs. Moreover, the current scenario for production and the use of nanotechnology as delivery tool for both classes of cationic peptides, as well as the perspectives on improving them is considered.
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Affiliation(s)
- Kelly C L Mulder
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Centro de Análises Proteômicas e Bioquímicas, Universidade Católica de Brasília Brasília, Brazil
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26
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Pelay-Gimeno M, Tulla-Puche J, Albericio F. "Head-to-side-chain" cyclodepsipeptides of marine origin. Mar Drugs 2013; 11:1693-717. [PMID: 23697952 PMCID: PMC3707169 DOI: 10.3390/md11051693] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 04/07/2013] [Accepted: 04/23/2013] [Indexed: 12/25/2022] Open
Abstract
Since the late 1980s, a large number of depsipeptides that contain a new topography, referred to as "head-to-side-chain" cyclodepsipeptides, have been isolated and characterized. These peptides present a unique structural arrangement that comprises a macrocyclic region closed through an ester bond between the C-terminus and a β-hydroxyl group, and terminated with a polyketide moiety or a more simple branched aliphatic acid. This structural pattern, the presence of unique and complex residues, and relevant bioactivity are the main features shared by all the members of this new class of depsipeptides, which are reviewed herein.
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Affiliation(s)
- Marta Pelay-Gimeno
- Institute for Research in Biomedicine (IRB Barcelona), Baldiri Reixac 10, Barcelona 08028, Spain
- CIBER-BBN, Networking Centre on Bioengineering, Biomaterials and Nanomedicine, Baldiri Reixac 10, Barcelona 08028, Spain
| | - Judit Tulla-Puche
- Institute for Research in Biomedicine (IRB Barcelona), Baldiri Reixac 10, Barcelona 08028, Spain
- CIBER-BBN, Networking Centre on Bioengineering, Biomaterials and Nanomedicine, Baldiri Reixac 10, Barcelona 08028, Spain
| | - Fernando Albericio
- Institute for Research in Biomedicine (IRB Barcelona), Baldiri Reixac 10, Barcelona 08028, Spain
- CIBER-BBN, Networking Centre on Bioengineering, Biomaterials and Nanomedicine, Baldiri Reixac 10, Barcelona 08028, Spain
- Department of Organic Chemistry, University of Barcelona, Martí i Franqués 1-11, Barcelona 08028, Spain
- School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4001, South Africa
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27
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Zheng L, Lin X, Wu N, Liu M, Zheng Y, Sheng J, Ji X, Sun M. Targeting cellular apoptotic pathway with peptides from marine organisms. Biochim Biophys Acta Rev Cancer 2013; 1836:42-8. [PMID: 23470652 DOI: 10.1016/j.bbcan.2013.02.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Revised: 02/17/2013] [Accepted: 02/19/2013] [Indexed: 01/15/2023]
Abstract
Apoptosis is a critical defense mechanism against the formation and progression of cancer and exhibits distinct morphological and biochemical traits. Targeting apoptotic pathways becomes an intriguing strategy for the development of chemotherapeutic agents. Peptides from marine organisms have become important sources in the discovery of antitumor drugs, especially when modern technology makes it more and more feasible to collect organisms from seas. This primer summarizes several marine peptides, based on their effects on apoptotic signaling pathways, although most of these peptides have not yet been studied in depth for their mechanisms of action. Novel peptides that induce an apoptosis signal pathway are presented in association with their pharmacological properties.
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Affiliation(s)
- Lanhong Zheng
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
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Bioactive peptides and depsipeptides with anticancer potential: sources from marine animals. Mar Drugs 2012; 10:963-986. [PMID: 22822350 PMCID: PMC3397454 DOI: 10.3390/md10050963] [Citation(s) in RCA: 161] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2011] [Revised: 03/24/2012] [Accepted: 04/05/2012] [Indexed: 11/30/2022] Open
Abstract
Biologically active compounds with different modes of action, such as, antiproliferative, antioxidant, antimicrotubule, have been isolated from marine sources, specifically algae and cyanobacteria. Recently research has been focused on peptides from marine animal sources, since they have been found as secondary metabolites from sponges, ascidians, tunicates, and mollusks. The structural characteristics of these peptides include various unusual amino acid residues which may be responsible for their bioactivity. Moreover, protein hydrolysates formed by the enzymatic digestion of aquatic and marine by-products are an important source of bioactive peptides. Purified peptides from these sources have been shown to have antioxidant activity and cytotoxic effect on several human cancer cell lines such as HeLa, AGS, and DLD-1. These characteristics imply that the use of peptides from marine sources has potential for the prevention and treatment of cancer, and that they might also be useful as molecular models in anticancer drug research. This review focuses on the latest studies and critical research in this field, and evidences the immense potential of marine animals as bioactive peptide sources.
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Lee J, Currano JN, Carroll PJ, Joullié MM. Didemnins, tamandarins and related natural products. Nat Prod Rep 2012; 29:404-24. [PMID: 22270031 DOI: 10.1039/c2np00065b] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Since the discovery and isolation of the didemnin family of marine depsipeptides in 1981, the synthesis and biological activity of its congeners have been of great interest to the scientific community. The didemnins have demonstrated antitumor, antiviral, and immunosuppressive activity at low nano- and femtomolar levels. Of the congeners, didemnin B was the first marine natural product to reach phase II clinical trials in the United States, stimulating many analogue syntheses to date. About two decades later, tamandarins A and B were isolated, and were found to possess very similar structure and biological activity to that of the didemnin B. These compounds have shown impressive biological activity and some progress has been made in establishing structure-activity relationships. However, their molecular mechanism of action still remains unclear. This review highlights the long-standing study of didemnins and its critical application towards the understanding of the molecular mechanism of action of tamandarins and their potential use as therapeutic agents.
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Affiliation(s)
- Jisun Lee
- University of Pennsylvania, Department of Chemistry, Philadelphia, Pennsylvania, United States
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30
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Antitumor peptides from marine organisms. Mar Drugs 2011; 9:1840-1859. [PMID: 22072999 PMCID: PMC3210608 DOI: 10.3390/md9101840] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2011] [Revised: 09/08/2011] [Accepted: 09/22/2011] [Indexed: 12/24/2022] Open
Abstract
The biodiversity of the marine environment and the associated chemical diversity constitute a practically unlimited resource of new antitumor agents in the field of the development of marine bioactive substances. In this review, the progress on studies of antitumor peptides from marine sources is provided. The biological properties and mechanisms of action of different marine peptides are described; information about their molecular diversity is also presented. Novel peptides that induce apoptosis signal pathway, affect the tubulin-microtubule equilibrium and inhibit angiogenesis are presented in association with their pharmacological properties. It is intended to provide useful information for further research in the fields of marine antitumor peptides.
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Liang Z, Sorribas A, Sulzmaier FJ, Jiménez JI, Wang X, Sauvage T, Yoshida WY, Wang G, Ramos JW, Williams PG. Stictamides A-C, MMP12 inhibitors containing 4-amino-3-hydroxy-5-phenylpentanoic acid subunits. J Org Chem 2011; 76:3635-43. [PMID: 21500817 DOI: 10.1021/jo200241h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
An extensive study of the secondary metabolites produced by a new Sticta sp. of lichen has led to the isolation of three new compounds containing the 4-amino-3-hydroxy-5-phenylpentanoic acid residue (Ahppa). The structures of stictamides A-C (1-3) were assigned by 2D NMR spectroscopic and chemical methods. Due to extensive epimerization of the Ahppa residue observed after acid hydrolysis, the configuration of this unit was deduced through conversion of 1 to an appropriate derivative and application of our recently developed statine NMR database. Evaluation of stictamide A against a panel of disease-relevant proteases showed that it inhibited MMP12 at 2.3 μM and significantly reduced invasion in the human glioma cell line U87MG. Docking studies suggest that stictamide A inhibits MMP12 by a non-zinc-binding mechanism.
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Affiliation(s)
- Zhibin Liang
- Departmentsof Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii 96822, United States
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32
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Lassen KM, Joullié MM. Total synthesis of Lys(3) tamandarin M: a potential affinity ligand. Org Lett 2010; 12:5306-9. [PMID: 21033723 DOI: 10.1021/ol1024212] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of Lys(3) tamandarin M is described. This analogue can be used as a protein affinity ligand to probe the mechanism of action of this unique class of molecules.
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Affiliation(s)
- Kenneth M Lassen
- Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
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Abstract
The syntheses of three tamandarin B analogues are described. The goal of these studies was to prepare material to determine their relative therapeutic index and to gain an oversight as to their potential for clinical applications.
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Affiliation(s)
- Kenneth M. Lassen
- Department of Chemistry, University of Pennsylvania, 231 South 34 St. Philadelphia, PA 19104
| | - Jisun Lee
- Department of Chemistry, University of Pennsylvania, 231 South 34 St. Philadelphia, PA 19104
| | - Madeleine M. Joullié
- Department of Chemistry, University of Pennsylvania, 231 South 34 St. Philadelphia, PA 19104
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Siodłak D, Janicki A. Conformational properties of the residues connected by ester and methylated amide bonds: theoretical and solid state conformational studies. J Pept Sci 2010; 16:126-35. [PMID: 20112354 DOI: 10.1002/psc.1208] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Peptides produced by bacteria and fungi often contain an ester bond in the main chain. Some of them have both an ester and methylated amide bond at the same residue. A broad spectrum of biological activities makes these depsipeptides potential drug precursors. To investigate the conformational properties of such modified residues, a systematic theoretical analysis was performed on N-acetyl-L-alanine N'-methylamide (Ac-Ala-NHMe) and the analogues with the ester bond on the C-terminus (Ac-Ala-OMe), N-terminus (Ac-[psi](COO)-Ala-NHMe) as well as the analogues methylated on the N-terminus (Ac-(Me)Ala-OMe) and C-terminus (Ac-[psi](COO)-Ala-NMe(2)). The phi, psi potential energy surfaces and the conformers localised were calculated at the B3LYP/6-311++G(d,p) level of theory both in vacuo and with inclusion of the solvent (chloroform, water) effect (SCRF method). The solid state conformations of the studied residues drawn from The Cambridge Structural Database have been also analysed. The residues with a C-terminal ester bond prefer the conformations beta, C5, and alpha(R), whereas those with N-terminal ester bond prefer the conformations beta, alpha(R), and the unique conformation alpha' (phi, psi = -146 degrees , -12 degrees ). The residues with N-terminal methylated amide and a C-terminal ester bond prefer the conformations beta, beta2, and interestingly, the conformation alpha(L). The residues with a C-terminal methylated amide and an N-terminal ester bond adopt primarily the conformation beta. The description of the selective structural modifications, such as those above, is a step towards understanding the structure-activity relationship of the depsipeptides, limited by the structural complexity of these compounds.
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Affiliation(s)
- Dawid Siodłak
- Faculty of Chemistry, University of Opole, Opole, Poland.
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Abstract
A reliable, high yielding cyclization protocol for the macrocycle of tamandarin B is presented. This strategy will facilitate the synthesis of side chain analogues.
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Affiliation(s)
- Kenneth M Lassen
- Department of Chemistry, University of Pennsylvania, 231 S. 34 Street, Philadelphia, PA 19104 USA
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36
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Blunt JW, Copp BR, Hu WP, Munro MHG, Northcote PT, Prinsep MR. Marine natural products. Nat Prod Rep 2009; 26:170-244. [PMID: 19177222 DOI: 10.1039/b805113p] [Citation(s) in RCA: 410] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
This review covers the literature published in 2007 for marine natural products, with 948 citations(627 for the period January to December 2007) referring to compounds isolated from marine microorganisms and phytoplankton, green algae, brown algae, red algae, sponges, cnidarians,bryozoans, molluscs, tunicates, echinoderms and true mangrove plants. The emphasis is on new compounds (961 for 2007), together with the relevant biological activities, source organisms and country of origin. Biosynthetic studies, first syntheses, and syntheses that lead to the revision of structures or stereochemistries, have been included.1 Introduction, 2 Reviews, 3 Marine microorganisms and phytoplankton, 4 Green algae, 5 Brown algae, 6 Red algae, 7 Sponges, 8 Cnidarians, 9 Bryozoans, 10 Molluscs, 11 Tunicates (ascidians),12 Echinoderms, 13 Miscellaneous, 14 Conclusion, 15 References.
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Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
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Soto-Cairoli B, Soderquist JA. Strict Reagent Control in the Asymmetric Allylboration of N-TIPS-α-Amino Aldehydes with the B-Allyl-10-TMS-9-borabicyclo[3.3.2]decanes. Org Lett 2008; 11:401-4. [DOI: 10.1021/ol802685e] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Buddy Soto-Cairoli
- University of Puerto Rico, Department of Chemistry, Rio Piedras, Puerto Rico 00931-3346
| | - John A. Soderquist
- University of Puerto Rico, Department of Chemistry, Rio Piedras, Puerto Rico 00931-3346
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Preciado A, Williams PG. A simple microscale method for determining the relative stereochemistry of statine units. J Org Chem 2008; 73:9228-34. [PMID: 18989929 PMCID: PMC2765571 DOI: 10.1021/jo8012429] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A simple method to determine the relative stereochemistry of statine amino acids (gamma-amino-beta-hydroxyacids) by using (1)H NMR spectroscopy is described. Configurational assignment of statine units within complex natural products is possible without degradation or derivatization as the syn and anti diastereomers can be distinguished by using a combination of chemical shift and coupling constant information derived from the alpha-methylene ABX system. Seventy-three examples are provided, demonstrating the scope and limitations of the methodology. These examples range in complexity from simple statine units to cyclic depsipeptides, such as tamandarin B.
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Affiliation(s)
- Alejandro Preciado
- Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii 96822
| | - Philip G. Williams
- Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii 96822
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Adrio J, Cuevas C, Manzanares I, Joullié MM. Total Synthesis and Biological Evaluation of Tamandarin B Analogues. J Org Chem 2007; 72:5129-38. [PMID: 17555353 DOI: 10.1021/jo070412r] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Tamandarins A and B are a class of marine natural cyclodepsipeptides with structures and biological activities closely related to those of the didemnins. The easier synthetic access to tamandarins accelerates the preparation of new macrocyclic derivatives of this family of antitumor, antiviral, and immunosuppressive compounds. The optimization of the previously reported synthetic route to tamandarins by changing the macrolactamization site from Nst1 and Thr6 to Pro4 and N,O-Me2Tyr5 residues led to a significant improvement in the reaction yield. Using this new synthetic approach, four new macrocyclic analogues of tamandarin B were prepared and evaluated for anticancer activity. These results provide further insight into the structure-activity relationship of the tamandarins and didemnins.
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Affiliation(s)
- Javier Adrio
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain
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Kashman Y, Rudi A, Pappo D. Recent heterocyclic compounds from marine invertebrates: Structure and synthesis. PURE APPL CHEM 2007. [DOI: 10.1351/pac200779040491] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A large variety of unique heterocyclic natural marine products, without terrestrial counterparts, have been isolated from marine invertebrates, mainly sponges, ascidians, and soft corals. Many of these compounds display interesting biological activity. In this review, we report our recent studies on nitrogen-containing heterocyclic compounds ("alkaloids"), as well as some containing sulfur and oxygen, which have been isolated from Red Sea and Indo-Pacific organisms, and discuss progress on the synthesis of these natural products and structural analogs.
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Affiliation(s)
- Yoel Kashman
- 1School of Chemistry, Tel Aviv University, 69978, Israel
| | - Amira Rudi
- 1School of Chemistry, Tel Aviv University, 69978, Israel
| | - Doron Pappo
- 1School of Chemistry, Tel Aviv University, 69978, Israel
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Adrio J, Cuevas C, Manzanares I, Joullié MM. Synthesis and biological evaluation of tamandarin B analogues. Org Lett 2006; 8:511-4. [PMID: 16435872 DOI: 10.1021/ol0530023] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[structure: see text]. The synthesis of two tamandarin B analogues in which the N,O-Me2Tyr5 unit was replaced by N-Me-phenylalanine (N-MePhe5) and (S)-2-(methylamino)-3-(naphthalen-2-yl)propanoic acid (N-MeNaphth5) is described. The choice of the macrocyclization site was crucial to achieve satisfactory macrolactamization. Coupling between norstatine (Nst1) and threonine (Thr6) afforded only a 15% yield, while lactamization between proline (Pro4) and the aromatic moiety could be achieved in 65% yield.
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Affiliation(s)
- Javier Adrio
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, USA
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Mendiola J, Hernández H, Sariego I, Rojas L, Otero A, Ramírez A, Chávez MDLA, Payrol JA, Hernández A. Antimalarial activity from three ascidians: an exploration of different marine invertebrate phyla. Trans R Soc Trop Med Hyg 2006; 100:909-16. [PMID: 16554076 DOI: 10.1016/j.trstmh.2005.11.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2005] [Revised: 10/27/2005] [Accepted: 11/14/2005] [Indexed: 11/26/2022] Open
Abstract
Recent research suggests that marine organisms may produce compounds with activity against malaria parasites. Of a total of 27 aqueous extracts from different marine species, collected on the northwest Cuban coast, 20 were considered as showing no significant activity against Plasmodium falciparum F32, with minimum inhibitory concentrations (MIC) >500 microg/ml, while seven extracts (MIC < or =500 microg/ml) were selected for further investigation by determining their selectivity indices and in vivo antimalarial activity. Three species of tunicates were chosen, as more than 50% reduction of P. berghei parasitaemia was produced after administration of 250 or 500 mg/kg of their crude extracts into infected mice. The aqueous extracts of Microcosmus goanus, Ascidia sydneiensis and Phallusia nigra were partitioned between water and n-butanol; the organic phases inhibited P. falciparum growth by 50% at concentrations of 17.5 microg/ml, 20.9 microg/ml and 29.4 microg/ml respectively. In general, these results are similar to those of most ethnobotanical surveys. Further chemical studies are being undertaken in order to isolate new antimalarial compounds from these Caribbean tunicates.
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Affiliation(s)
- Judith Mendiola
- Department of Parasitology, Institute Pedro Kourí, Autopista Novia del Mediodía, Km 6 1/2, P.O. Box 601, Marianao 13, Ciudad Habana, Cuba.
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Hamada Y, Shioiri T. Recent progress of the synthetic studies of biologically active marine cyclic peptides and depsipeptides. Chem Rev 2006; 105:4441-82. [PMID: 16351050 DOI: 10.1021/cr0406312] [Citation(s) in RCA: 218] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yasumasa Hamada
- Graduate School of Pharmaceutical Sciences, Chiba University, Yayoi-cho, Inage-ku, Japan.
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Marine organisms from Brazil as source of potential anticancer agents. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/s1572-557x(05)02011-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Rodrigues RDC, Barros IM, Lima EL. Mild one-pot conversion of carboxylic acids to amides or esters with Ph3P/trichloroisocyanuric acid. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.06.127] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Enantioselective synthesis of either enantiomer of α-alkyl-α-hydroxy-α-phenylacetic acids using chiral auxiliaries. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.tetasy.2005.03.032] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Losada A, López-Oliva JM, Sánchez-Puelles JM, García-Fernández LF. Establishment and characterisation of a human carcinoma cell line with acquired resistance to Aplidin. Br J Cancer 2004; 91:1405-13. [PMID: 15365569 PMCID: PMC2409906 DOI: 10.1038/sj.bjc.6602166] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Aplidin (APL) is a new antitumoral drug from marine origin currently in phase II clinical trials against a wide multiplicity of cancers. As resistance may be, as with other drugs, an important obstacle to the APL therapeutic efficacy, we have established an acquired resistance cellular model by continuous exposure of HeLa cells to the drug. The stably resistant subline generated (HeLa-APL), possessing more than 1000-fold relative resistance to APL than parental cells, did not show crossresistance to a subset of clinically relevant antitumoral agents. In addition, resistance was not related to overexpression of P-glycoprotein or differences in overall drug accumulation. Comparing to parental cells, HeLa-APL cells did not present either significant differences in the growth rate or apparent alterations in the cell cycle distribution. Aplidin induced rapid and persistent phosphorylation of both JNK and p38 MAPKs, resulting in activation of the mitochondrial apoptotic pathway in parental cells, but, notably, in HeLa-APL-resistant cells MAPKs activation only occurred in a slight and transiently manner, failing to activate the above-mentioned apoptotic machinery. These results suggest that sustained activation of JNK and p38 is essential for triggering the apoptotic programme induced by APL and that HeLa-APL cells bypass this apoptotic response by preventing the specific mechanisms that prime and sustain the long-term activation of these signalling cascades. Although far from human tumour physiology in vivo, HeLa-APL cells represent a potentially useful tool in gaining insights into the mode of action of APL, in selecting non-crossresistant APL structural analogues, as well as in investigating and developing methods to prevent resistance to this drug.
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Affiliation(s)
- A Losada
- Drug Discovery Department, PharmaMar, S.A., E-28770-Colmenar Viejo, Madrid, Spain
| | - J M López-Oliva
- Drug Discovery Department, PharmaMar, S.A., E-28770-Colmenar Viejo, Madrid, Spain
| | - J M Sánchez-Puelles
- Drug Discovery Department, PharmaMar, S.A., E-28770-Colmenar Viejo, Madrid, Spain
| | - L F García-Fernández
- Drug Discovery Department, PharmaMar, S.A., E-28770-Colmenar Viejo, Madrid, Spain
- PharmaMar, S.A.U. Drug Discovery Department, Avda. de los Reyes 1, P.I. La Mina-Norte, E-28770-Colmenar Viejo, Madrid, Spain. E-mail:
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Barroso S, Blay G, Cardona L, Fernández I, García B, Pedro JR. Highly Diastereoselective Arylation of (S)-Mandelic Acid Enolate: Enantioselective Synthesis of Substituted (R)-3-Hydroxy-3-phenyloxindoles and (R)-Benzylic Acids and Synthesis of Nitrobenzophenones. J Org Chem 2004; 69:6821-9. [PMID: 15387607 DOI: 10.1021/jo0402069] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An easy access to substituted (R)-3-hydroxy-3-phenyloxindoles, (R)-benzylic acids, and benzophenones is described. The reaction of the lithium enolate of the (2S,5S)-cis-1,3-dioxolan-4-one derived from optically active (S)-mandelic acid and pivalaldehyde with several o- and p-halonitrobenzenes proceeds readily to give the corresponding arylation products in good yields and diastereoselectivities. The reduction of the nitro group with Zn/HCl/EtOH in the o-nitro arylation products with concomitant intramolecular aminolysis of the dioxolanone moiety leads directly to enantiomerically pure (R)-3-hydroxy-3-phenyloxindoles. On the other hand the basic hydrolysis of the dioxolanone moiety in all the arylation products (ortho and para) leads to enantiomerically pure substituted (R)-benzylic acids. The oxidative decarboxylation of these latter with oxygen as terminal oxidant in the presence of pivalaldehyde and the Co(III)-Me2opba complex as catalyst gives substituted nitrobenzophenones.
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Affiliation(s)
- Santiago Barroso
- Departament de Química Orgànica, Facultat de Química, Universitat de València, Dr. Moliner 50, E-46100 Burjassot, València, Spain
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