1
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Paquette AR, Boddy CN. Macrocyclization strategies for the total synthesis of cyclic depsipeptides. Org Biomol Chem 2023; 21:8043-8053. [PMID: 37750186 DOI: 10.1039/d3ob01229h] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
Cyclic depsipeptides are an important class of peptide natural products that are defined by the presence of ester and amide bonds within the macrocycle. The structural diversity of depsipeptides has required the development of a broad range of synthetic strategies to access these biologically active compounds. Solid phase peptide synthesis (SPPS) strategies have been an invaluable tool in their synthesis. The key aspect of their synthesis is the macrocyclization strategy. Three main strategies are used, solution phase macrolactamization of acyclic ester containing peptide, on-resin macrolactamization of a sidechain-anchored peptide, and the solution phase macrolactonization of a linear peptide. Additionally, biocatalysts have been used to produce these compounds in a regio- and chemo-selective manner. Each compound offers unique challenges, requiring careful synthetic design to avoid undesirable side reactivity or unwanted epimerization during the esterification and macrocyclizing steps. This focused review analyzes these three strategies for cyclic depsipeptide natural product total synthesis with selected examples from the literature between 2001-2023.
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Affiliation(s)
- André R Paquette
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, ON, K1N 6N5, Canada.
| | - Christopher N Boddy
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, ON, K1N 6N5, Canada.
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2
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Depsipeptides Targeting Tumor Cells: Milestones from In Vitro to Clinical Trials. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020670. [PMID: 36677728 PMCID: PMC9864405 DOI: 10.3390/molecules28020670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/15/2022] [Accepted: 12/16/2022] [Indexed: 01/11/2023]
Abstract
Cancer is currently considered one of the most threatening diseases worldwide. Diet could be one of the factors that can be enhanced to comprehensively address a cancer patient's condition. Unfortunately, most molecules capable of targeting cancer cells are found in uncommon food sources. Among them, depsipeptides have emerged as one of the most reliable choices for cancer treatment. These cyclic amino acid oligomers, with one or more subunits replaced by a hydroxylated carboxylic acid resulting in one lactone bond in a core ring, have broadly proven their cancer-targeting efficacy, some even reaching clinical trials and being commercialized as "anticancer" drugs. This review aimed to describe these depsipeptides, their reported amino acid sequences, determined structure, and the specific mechanism by which they target tumor cells including apoptosis, oncosis, and elastase inhibition, among others. Furthermore, we have delved into state-of-the-art in vivo and clinical trials, current methods for purification and synthesis, and the recognized disadvantages of these molecules. The information collated in this review can help researchers decide whether these molecules should be incorporated into functional foods in the near future.
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3
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Nomura K, Hashimoto S, Takeyama R, Tamiya M, Kato T, Muraoka T, Kage M, Nii K, Kotake K, Iida S, Emura T, Tanada M, Iikura H. Broadly Applicable and Comprehensive Synthetic Method for N-Alkyl-Rich Drug-like Cyclic Peptides. J Med Chem 2022; 65:13401-13412. [DOI: 10.1021/acs.jmedchem.2c01296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kenichi Nomura
- Research Division, Chugai Pharmaceutical Co. Ltd., 1-135 Komakado, Gotemba, Shizuoka 412-8513, Japan
| | - Satoshi Hashimoto
- Research Division, Chugai Pharmaceutical Co. Ltd., 1-135 Komakado, Gotemba, Shizuoka 412-8513, Japan
| | - Ryuuichi Takeyama
- Research Division, Chugai Pharmaceutical Co. Ltd., 1-135 Komakado, Gotemba, Shizuoka 412-8513, Japan
| | - Minoru Tamiya
- Research Division, Chugai Pharmaceutical Co. Ltd., 200 Kajiwara, Kamakura, Kanagawa 247-8530, Japan
| | - Tatsuya Kato
- Research Division, Chugai Pharmaceutical Co. Ltd., 1-135 Komakado, Gotemba, Shizuoka 412-8513, Japan
| | - Terushige Muraoka
- Research Division, Chugai Pharmaceutical Co. Ltd., 200 Kajiwara, Kamakura, Kanagawa 247-8530, Japan
| | - Mirai Kage
- Research Division, Chugai Pharmaceutical Co. Ltd., 1-135 Komakado, Gotemba, Shizuoka 412-8513, Japan
| | - Keiji Nii
- Research Division, Chugai Pharmaceutical Co. Ltd., 200 Kajiwara, Kamakura, Kanagawa 247-8530, Japan
| | - Kenichiro Kotake
- Research Division, Chugai Pharmaceutical Co. Ltd., 1-135 Komakado, Gotemba, Shizuoka 412-8513, Japan
| | - Satomi Iida
- Research Division, Chugai Pharmaceutical Co. Ltd., 1-135 Komakado, Gotemba, Shizuoka 412-8513, Japan
| | - Takashi Emura
- Research Division, Chugai Pharmaceutical Co. Ltd., 1-135 Komakado, Gotemba, Shizuoka 412-8513, Japan
| | - Mikimasa Tanada
- Research Division, Chugai Pharmaceutical Co. Ltd., 1-135 Komakado, Gotemba, Shizuoka 412-8513, Japan
- Research Division, Chugai Pharmaceutical Co. Ltd., 200 Kajiwara, Kamakura, Kanagawa 247-8530, Japan
| | - Hitoshi Iikura
- Research Division, Chugai Pharmaceutical Co. Ltd., 1-135 Komakado, Gotemba, Shizuoka 412-8513, Japan
- Research Division, Chugai Pharmaceutical Co. Ltd., 200 Kajiwara, Kamakura, Kanagawa 247-8530, Japan
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4
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Shen SM, Appendino G, Guo YW. Pitfalls in the structural elucidation of small molecules. A critical analysis of a decade of structural misassignments of marine natural products. Nat Prod Rep 2022; 39:1803-1832. [PMID: 35770685 DOI: 10.1039/d2np00023g] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Covering: July 2010 to August 2021This article summarizes more than 200 cases of misassigned marine natural products reported between July 2010 and August 2021, sorting out errors according to the structural elements. Based on a comparative analysis of the original and the revised structures, major pitfalls still plaguing the structural elucidation of small molecules were identified, emphasizing the role of total synthesis, crystallography, as well as chemical- and biosynthetic logic to complement spectroscopic data. Distinct "trends" in natural product misassignment are evident between compounds of marine and plant origin, with an overall much lower incidence of "impossible" structures within misassigned marine natural products.
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Affiliation(s)
- Shou-Mao Shen
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China. .,School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Giovanni Appendino
- Dipartimento di Scienze del Farmaco, Universitá degli Studi del Piemonte Orientale, Largo Donegani 2, 28100 Novara, Italy
| | - Yue-Wei Guo
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China. .,Drug Discovery Shandong Laboratory, Bohai Rim Advanced Research Institute for Drug Discovery, Yantai, Shandong 264117, China
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5
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Yan H, Chen F. Recent Progress in Solid‐Phase Total Synthesis of Naturally Occurring Small Peptides. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Hong Yan
- Institute of Pharmaceutical Science and Technology College of Chemistry Fuzhou University Fuzhou 350108 People's Republic of China
| | - Fen‐Er Chen
- Institute of Pharmaceutical Science and Technology College of Chemistry Fuzhou University Fuzhou 350108 People's Republic of China
- Engineering Center of Catalysis and Synthesis for Chiral Molecules Department of Chemistry Fudan University 220 Handan Road Shanghai 200433 People's Republic of China
- Shanghai Engineering Research Center of Industrial Asymmetric Catalysis of Chiral Drugs Fudan University 220 Handan Road Shanghai 200433 People's Republic of China
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6
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Ahangarpour M, Kavianinia I, Harris PWR, Brimble MA. Photo-induced radical thiol-ene chemistry: a versatile toolbox for peptide-based drug design. Chem Soc Rev 2021; 50:898-944. [PMID: 33404559 DOI: 10.1039/d0cs00354a] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
While the global market for peptide/protein-based therapeutics is witnessing significant growth, the development of peptide drugs remains challenging due to their low oral bioavailability, poor membrane permeability, and reduced metabolic stability. However, a toolbox of chemical approaches has been explored for peptide modification to overcome these obstacles. In recent years, there has been a revival of interest in photoinduced radical thiol-ene chemistry as a powerful tool for the construction of therapeutic peptides.
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Affiliation(s)
- Marzieh Ahangarpour
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand.
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7
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Ganiu MO, Nepal B, Van Houten JP, Kartika R. A decade review of triphosgene and its applications in organic reactions. Tetrahedron 2020; 76:131553. [PMID: 33883783 PMCID: PMC8054975 DOI: 10.1016/j.tet.2020.131553] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
This review article highlights selected advances in triphosgene-enabled organic synthetic reactions that were reported in the decade of 2010-2019. Triphosgene is a versatile reagent in organic synthesis. It serves as a convenient substitute for the toxic phosgene gas. Despite its first known preparation in the late 19th interestingly began only three decades ago. Despite the relatively short history, triphosgene has been proven to be very useful in facilitating the preparation of a vast scope of value-added compounds, such as organohalides, acid chlorides, isocyanates, carbonyl addition adducts, heterocycles, among others. Furthermore, applications of triphosgene in complex molecules synthesis, polymer synthesis, and other techniques, such as flow chemistry and solid phase synthesis, have also emerged in the literature.
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Affiliation(s)
| | | | | | - Rendy Kartika
- Department of Chemistry, 232 Choppin Hall, Louisiana State University, Baton Rouge, LA 70803 United States
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8
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Targeting of HER/ErbB family proteins using broad spectrum Sec61 inhibitors coibamide A and apratoxin A. Biochem Pharmacol 2020; 183:114317. [PMID: 33152346 DOI: 10.1016/j.bcp.2020.114317] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 10/29/2020] [Accepted: 10/30/2020] [Indexed: 01/17/2023]
Abstract
Coibamide A is a potent cancer cell toxin and one of a select group of natural products that inhibit protein entry into the secretory pathway via a direct inhibition of the Sec61 protein translocon. Many Sec61 client proteins are clinically relevant drug targets once trafficked to their final destination in or outside the cell, however the use of Sec61 inhibitors to block early biosynthesis of specific proteins is at a pre-clinical stage. In the present study we evaluated the action of coibamide A against human epidermal growth factor receptor (HER, ErbB) proteins in representative breast and lung cancer cell types. HERs were selected for this study as they represent a family of Sec61 clients that is frequently dysregulated in human cancers, including coibamide-sensitive cell types. Although coibamide A inhibits biogenesis of a broad range of Sec61 substrate proteins in a presumed substrate-nonselective manner, endogenous HER3 (ErbB-3) and EGFR (ErbB-1) proteins were more sensitive to coibamide A, and the related Sec61 inhibitor apratoxin A, than HER2 (ErbB-2). Despite this rank order of sensitivity (HER3 > EGFR > HER2), Sec61-dependent inhibition by coibamide A was sufficient to decrease cell surface expression of HER2. We report that coibamide A- or apratoxin A-mediated block of HER3 entry into the secretory pathway is unlikely to be mediated by the HER3 signal peptide alone. HER3 (G11L/S15L), that is fully resistant to the highly substrate-selective cotransin analogue CT8, was more resistant than wild-type HER3 but only at low coibamide A (3 nM) concentrations; HER3 (G11L/S15L) expression was inhibited by higher concentrations of either natural product. Time- and concentration-dependent decreases in HER protein expression induced a commensurate reduction in AKT/MAPK signaling in breast and lung cancer cell types and loss in cell viability. Coibamide A potentiated the cytotoxic efficacy of small molecule kinase inhibitors lapatinib and erlotinib in breast and lung cancer cell types, respectively. These data indicate that natural product modulators of Sec61 function have value as chemical probes to interrogate HER/ErbB signaling in treatment-resistant human cancers.
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Li Y, Naman CB, Alexander KL, Guan H, Gerwick WH. The Chemistry, Biochemistry and Pharmacology of Marine Natural Products from Leptolyngbya, a Chemically Endowed Genus of Cyanobacteria. Mar Drugs 2020; 18:E508. [PMID: 33036172 PMCID: PMC7600079 DOI: 10.3390/md18100508] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 09/21/2020] [Accepted: 10/02/2020] [Indexed: 12/23/2022] Open
Abstract
Leptolyngbya, a well-known genus of cyanobacteria, is found in various ecological habitats including marine, fresh water, swamps, and rice fields. Species of this genus are associated with many ecological phenomena such as nitrogen fixation, primary productivity through photosynthesis and algal blooms. As a result, there have been a number of investigations of the ecology, natural product chemistry, and biological characteristics of members of this genus. In general, the secondary metabolites of cyanobacteria are considered to be rich sources for drug discovery and development. In this review, the secondary metabolites reported in marine Leptolyngbya with their associated biological activities or interesting biosynthetic pathways are reviewed, and new insights and perspectives on their metabolic capacities are gained.
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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, China;
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, CA 92093, USA; (C.B.N.); (K.L.A.)
| | - C. Benjamin Naman
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, CA 92093, USA; (C.B.N.); (K.L.A.)
- Li Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research Center, Department of Marine Pharmacy, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315800, China
| | - Kelsey L. Alexander
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, CA 92093, USA; (C.B.N.); (K.L.A.)
- Department of Chemistry and Biochemistry, University of California, San Diego, CA 92093, USA
| | - Huashi Guan
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China;
| | - William H. Gerwick
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, CA 92093, USA; (C.B.N.); (K.L.A.)
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, CA 92093, USA
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10
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Tranter D, Paatero AO, Kawaguchi S, Kazemi S, Serrill JD, Kellosalo J, Vogel WK, Richter U, Mattos DR, Wan X, Thornburg CC, Oishi S, McPhail KL, Ishmael JE, Paavilainen VO. Coibamide A Targets Sec61 to Prevent Biogenesis of Secretory and Membrane Proteins. ACS Chem Biol 2020; 15:2125-2136. [PMID: 32608972 PMCID: PMC7497630 DOI: 10.1021/acschembio.0c00325] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 07/01/2020] [Indexed: 01/19/2023]
Abstract
Coibamide A (CbA) is a marine natural product with potent antiproliferative activity against human cancer cells and a unique selectivity profile. Despite promising antitumor activity, the mechanism of cytotoxicity and specific cellular target of CbA remain unknown. Here, we develop an optimized synthetic CbA photoaffinity probe (photo-CbA) and use it to demonstrate that CbA directly targets the Sec61α subunit of the Sec61 protein translocon. CbA binding to Sec61 results in broad substrate-nonselective inhibition of ER protein import and potent cytotoxicity against specific cancer cell lines. CbA targets a lumenal cavity of Sec61 that is partially shared with known Sec61 inhibitors, yet profiling against resistance conferring Sec61α mutations identified from human HCT116 cells suggests a distinct binding mode for CbA. Specifically, despite conferring strong resistance to all previously known Sec61 inhibitors, the Sec61α mutant R66I remains sensitive to CbA. A further unbiased screen for Sec61α resistance mutations identified the CbA-resistant mutation S71P, which confirms nonidentical binding sites for CbA and apratoxin A and supports the susceptibility of the Sec61 plug region for channel inhibition. Remarkably, CbA, apratoxin A, and ipomoeassin F do not display comparable patterns of potency and selectivity in the NCI60 panel of human cancer cell lines. Our work connecting CbA activity with selective prevention of secretory and membrane protein biogenesis by inhibition of Sec61 opens up possibilities for developing new Sec61 inhibitors with improved drug-like properties that are based on the coibamide pharmacophore.
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Affiliation(s)
- Dale Tranter
- Institute of Biotechnology, University of Helsinki, Helsinki, 00014, Finland
| | - Anja O. Paatero
- Institute of Biotechnology, University of Helsinki, Helsinki, 00014, Finland
| | - Shinsaku Kawaguchi
- Graduate
School of Pharmaceutical Sciences, Kyoto
University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Soheila Kazemi
- Department
of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
| | - Jeffrey D. Serrill
- Department
of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
| | - Juho Kellosalo
- Institute of Biotechnology, University of Helsinki, Helsinki, 00014, Finland
| | - Walter K. Vogel
- Department
of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
| | - Uwe Richter
- Molecular
and Integrative Biosciences Research Programme, Faculty of Biological
and Environmental Sciences, University of
Helsinki, Helsinki, 00014, Finland
| | - Daphne R. Mattos
- Department
of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
| | - Xuemei Wan
- Department
of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
| | - Christopher C. Thornburg
- Frederick
National Laboratory for Cancer Research, Leidos Biomedical Research, Inc., Frederick, Maryland 21702, United States
| | - Shinya Oishi
- Graduate
School of Pharmaceutical Sciences, Kyoto
University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Kerry L. McPhail
- Department
of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
| | - Jane E. Ishmael
- Department
of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
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Matulja D, Wittine K, Malatesti N, Laclef S, Turks M, Markovic MK, Ambrožić G, Marković D. Marine Natural Products with High Anticancer Activities. Curr Med Chem 2020; 27:1243-1307. [PMID: 31931690 DOI: 10.2174/0929867327666200113154115] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 12/03/2019] [Accepted: 12/15/2019] [Indexed: 12/13/2022]
Abstract
This review covers recent literature from 2012-2019 concerning 170 marine natural products and their semisynthetic analogues with strong anticancer biological activities. Reports that shed light on cellular and molecular mechanisms and biological functions of these compounds, thus advancing the understanding in cancer biology are also included. Biosynthetic studies and total syntheses, which have provided access to derivatives and have contributed to the proper structure or stereochemistry elucidation or revision are mentioned. The natural compounds isolated from marine organisms are divided into nine groups, namely: alkaloids, sterols and steroids, glycosides, terpenes and terpenoids, macrolides, polypeptides, quinones, phenols and polyphenols, and miscellaneous products. An emphasis is placed on several drugs originating from marine natural products that have already been marketed or are currently in clinical trials.
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Affiliation(s)
- Dario Matulja
- Department of Biotechnology, University of Rijeka, Radmile Matejcic 2, 51000 Rijeka, Croatia
| | - Karlo Wittine
- Department of Biotechnology, University of Rijeka, Radmile Matejcic 2, 51000 Rijeka, Croatia
| | - Nela Malatesti
- Department of Biotechnology, University of Rijeka, Radmile Matejcic 2, 51000 Rijeka, Croatia
| | - Sylvain Laclef
- Laboratoire de Glycochimie, des Antimicrobiens et des Agro-ressources (LG2A), CNRS FRE 3517, 33 rue Saint-Leu, 80039 Amiens, France
| | - Maris Turks
- Faculty of Material Science and Applied Chemistry, Riga Technical University, P. Valdena Str. 3, Riga, LV-1007, Latvia
| | - Maria Kolympadi Markovic
- Department of Physics, and Center for Micro- and Nanosciences and Technologies, University of Rijeka, Radmile Matejcic 2, 51000 Rijeka, Croatia
| | - Gabriela Ambrožić
- Department of Physics, and Center for Micro- and Nanosciences and Technologies, University of Rijeka, Radmile Matejcic 2, 51000 Rijeka, Croatia
| | - Dean Marković
- Department of Biotechnology, University of Rijeka, Radmile Matejcic 2, 51000 Rijeka, Croatia
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12
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Luesch H, Paavilainen VO. Natural products as modulators of eukaryotic protein secretion. Nat Prod Rep 2020; 37:717-736. [PMID: 32067014 DOI: 10.1039/c9np00066f] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Covering: up to the end of 2019Diverse natural product small molecules have allowed critical insights into processes that govern eukaryotic cells' ability to secrete cytosolically synthesized secretory proteins into their surroundings or to insert newly synthesized integral membrane proteins into the lipid bilayer of the endoplasmic reticulum. In addition, many components of the endoplasmic reticulum, required for protein homeostasis or other processes such as lipid metabolism or maintenance of calcium homeostasis, are being investigated for their potential in modulating human disease conditions such as cancer, neurodegenerative conditions and diabetes. In this review, we cover recent findings up to the end of 2019 on natural products that influence protein secretion or impact ER protein homeostasis, and serve as powerful chemical tools to understand protein flux through the mammalian secretory pathway and as leads for the discovery of new therapeutics.
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Affiliation(s)
- Hendrik Luesch
- Department of Medicinal Chemistry, Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida, P.O. Box 100485, Gainesville, Florida 32610, USA.
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Solid-Phase Synthesis and Circular Dichroism Study of β-ABpeptoids. Molecules 2019; 24:molecules24010178. [PMID: 30621297 PMCID: PMC6337665 DOI: 10.3390/molecules24010178] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 12/27/2018] [Accepted: 01/04/2019] [Indexed: 11/17/2022] Open
Abstract
The development of peptidomimetic foldamers that can form well-defined folded structures is highly desirable yet challenging. We previously reported on α-ABpeptoids, oligomers of N-alkylated β2-homoalanines and found that due to the presence of chiral methyl groups at α-positions, α-ABpeptoids were shown to adopt folding conformations. Here, we report β-ABpeptoids having chiral methyl group at β-positions rather than α-positions as a different class of peptoids with backbone chirality. We developed a facile solid-phase synthetic route that enables the synthesis of β-ABpeptoid oligomers ranging from 2-mer to 8-mer in excellent yields. These oligomers were shown to adopt ordered folding conformations based on circular dichroism (CD) and NMR studies. Overall, these results suggest that β-ABpeptoids represent a novel class of peptidomimetic foldamers that will find a wide range of applications in biomedical and material sciences.
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Zhao L, Cai X, Kaiser M, Bode HB. Methionine-Containing Rhabdopeptide/Xenortide-like Peptides from Heterologous Expression of the Biosynthetic Gene Cluster kj12ABC in Escherichia coli. JOURNAL OF NATURAL PRODUCTS 2018; 81:2292-2295. [PMID: 30302998 DOI: 10.1021/acs.jnatprod.8b00425] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Seven new methionine-containing rhabdopeptide/xenortide-like peptides (1-7) were identified from Escherichia coli expressing the rhabdopeptide/xenortide-like peptide biosynthetic gene cluster kj12ABC from Xenorhabdus KJ12.1. Their structures were elucidated by detailed HPLC-HR-MS/MS analysis and confirmed by chemical synthesis. Bioactivity tests of these first rhabdopeptide/xenortide-like peptide derivatives (2-7) showing methionine building blocks compared to the usually found derivatives containing exclusively hydrophobic amino acids such as valine, leucine, or phenylalanine revealed good activities of 2-7 against protozoan parasites and no cytotoxicity against mammalian L6 cells.
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Affiliation(s)
- Lei Zhao
- Molekulare Biotechnologie, Fachbereich Biowissenschaften , Goethe Universität Frankfurt , 60438 Frankfurt am Main , Germany
- Institute of Botany , Jiangsu Province and Chinese Academy of Sciences , 210014 Nanjing , China
| | - Xiaofeng Cai
- Molekulare Biotechnologie, Fachbereich Biowissenschaften , Goethe Universität Frankfurt , 60438 Frankfurt am Main , Germany
| | - Marcel Kaiser
- Parasite Chemotherapy , Swiss Tropical and Public Health Institute , 4051 Basel , Switzerland
- University of Basel , 4003 Basel , Switzerland
| | - Helge B Bode
- Molekulare Biotechnologie, Fachbereich Biowissenschaften , Goethe Universität Frankfurt , 60438 Frankfurt am Main , Germany
- Buchmann Institute for Molecular Life Sciences (BMLS) , Goethe Universität Frankfurt , 60438 Frankfurt am Main , Germany
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Yao G, Wang W, Ao L, Cheng Z, Wu C, Pan Z, Liu K, Li H, Su W, Fang L. Improved Total Synthesis and Biological Evaluation of Coibamide A Analogues. J Med Chem 2018; 61:8908-8916. [PMID: 30247036 DOI: 10.1021/acs.jmedchem.8b01141] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
To enable the large-scale synthesis of coibamide A, we developed an improved synthetic strategy for this class of cyclodepsipeptide. The versatility of the synthetic procedure was demonstrated by the preparation of a series of designed coibamide A analogues, which enabled the preliminary structure-activity relationship (SAR) studies for this compound. Although most modifications of coibamide A resulted in decrease or loss of the antiproliferativity, we found that versatile substitution at position 3 was well tolerated. Remarkably, a simplified analogue, [MeAla3-MeAla6]-coibamide (1f), not only showed nearly the same inhibition as coibamide A against the tested cancer cells but also significantly inhibited tumor growth in vivo. The improved synthetic strategy and the relevant trends of SAR disclosed in this study will be valuable for further optimization of the overall profile of coibamide A.
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Affiliation(s)
- Guiyang Yao
- Guangdong Key Laboratory of Nanomedicine, Institute of Biomedicine and Biotechnology , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen , Guangdong 518055 , China
| | - Wei Wang
- Guangdong Key Laboratory of Nanomedicine, Institute of Biomedicine and Biotechnology , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen , Guangdong 518055 , China
| | - Lijiao Ao
- Guangdong Key Laboratory of Nanomedicine, Institute of Biomedicine and Biotechnology , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen , Guangdong 518055 , China.,Shenzhen College of Advanced Technology , University of Chinese Academy of Sciences , Shenzhen , Guangdong 518055 , China
| | - Zhehong Cheng
- Guangdong Key Laboratory of Nanomedicine, Institute of Biomedicine and Biotechnology , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen , Guangdong 518055 , China.,Shenzhen College of Advanced Technology , University of Chinese Academy of Sciences , Shenzhen , Guangdong 518055 , China
| | - Chunlei Wu
- Guangdong Key Laboratory of Nanomedicine, Institute of Biomedicine and Biotechnology , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen , Guangdong 518055 , China
| | - Zhengyin Pan
- Guangdong Key Laboratory of Nanomedicine, Institute of Biomedicine and Biotechnology , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen , Guangdong 518055 , China
| | - Ke Liu
- Guangdong Key Laboratory of Nanomedicine, Institute of Biomedicine and Biotechnology , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen , Guangdong 518055 , China
| | - Hongchang Li
- Guangdong Key Laboratory of Nanomedicine, Institute of Biomedicine and Biotechnology , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen , Guangdong 518055 , China
| | - Wu Su
- Guangdong Key Laboratory of Nanomedicine, Institute of Biomedicine and Biotechnology , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen , Guangdong 518055 , China
| | - Lijing Fang
- Guangdong Key Laboratory of Nanomedicine, Institute of Biomedicine and Biotechnology , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen , Guangdong 518055 , China
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16
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Fagundez C, Sellanes D, Serra G. Synthesis of Cyclic Peptides as Potential Anti-Malarials. ACS COMBINATORIAL SCIENCE 2018; 20:212-219. [PMID: 29446619 DOI: 10.1021/acscombsci.7b00154] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The results from the synthesis of peptides by Fmoc/SPPS on a 2-CTC resin and then lactamization in solution or solid phase for the preparation of cyclopeptides are presented. Both procedures allow the synthesis of the desired compounds in good to very good yield and with high cyclization efficiency for on-resin macrocyclization. In addition, the activities of the corresponding cyclopeptides against the chloroquine-resistant K1 strain of Plasmodium falciparum were evaluated. Cyclo-Cys(Trt)-Gly-Thr( tBu)-Gly-Cys(Trt)-Gly showed potent in vitro and selective activity against this parasite, EC50 = 28 nM.
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Affiliation(s)
- Catherine Fagundez
- Cátedra de Química Farmacéutica, (DQO), Facultad de Química, Universidad de la República, Gral. Flores 2124, CP 11800, Montevideo, Uruguay
| | - Diver Sellanes
- Cátedra de Química Farmacéutica, (DQO), Facultad de Química, Universidad de la República, Gral. Flores 2124, CP 11800, Montevideo, Uruguay
| | - Gloria Serra
- Cátedra de Química Farmacéutica, (DQO), Facultad de Química, Universidad de la República, Gral. Flores 2124, CP 11800, Montevideo, Uruguay
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17
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Wu C, Pan Z, Yao G, Wang W, Fang L, Su W. Synthesis and structure–activity relationship studies of teixobactin analogues. RSC Adv 2017. [DOI: 10.1039/c6ra26567g] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new series of teixobactin analogues were prepared using a convenient synthetic strategy and their antibacterial activities were evaluated.
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Affiliation(s)
- Chunlei Wu
- Guangdong Key Laboratory of Nanomedicine
- Institute of Biomedicine and Biotechnology
- Shenzhen Institutes of Advanced Technology
- Chinese Academy of Sciences
- Shenzhen 518055
| | - Zhengyin Pan
- Guangdong Key Laboratory of Nanomedicine
- Institute of Biomedicine and Biotechnology
- Shenzhen Institutes of Advanced Technology
- Chinese Academy of Sciences
- Shenzhen 518055
| | - Guiyang Yao
- Guangdong Key Laboratory of Nanomedicine
- Institute of Biomedicine and Biotechnology
- Shenzhen Institutes of Advanced Technology
- Chinese Academy of Sciences
- Shenzhen 518055
| | - Wei Wang
- Guangdong Key Laboratory of Nanomedicine
- Institute of Biomedicine and Biotechnology
- Shenzhen Institutes of Advanced Technology
- Chinese Academy of Sciences
- Shenzhen 518055
| | - Lijing Fang
- Guangdong Key Laboratory of Nanomedicine
- Institute of Biomedicine and Biotechnology
- Shenzhen Institutes of Advanced Technology
- Chinese Academy of Sciences
- Shenzhen 518055
| | - Wu Su
- Guangdong Key Laboratory of Nanomedicine
- Institute of Biomedicine and Biotechnology
- Shenzhen Institutes of Advanced Technology
- Chinese Academy of Sciences
- Shenzhen 518055
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18
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Sable GA, Park J, Lim SJ, Lim D. Solid-phase Total Synthesis of Amide Analogues of Coibamide A: Azacoibamide A andO-Desmethyl Azacoibamide A. B KOREAN CHEM SOC 2016. [DOI: 10.1002/bkcs.10674] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Ganesh A. Sable
- Department of Chemistry; Sejong University; Seoul 143-747 Republic of Korea
| | - Jaekwan Park
- Department of Chemistry; Sejong University; Seoul 143-747 Republic of Korea
| | - Soo-Jeong Lim
- Department of Bioscience and Biotechnology; Sejong University; Seoul 143-747 Republic of Korea
| | - Dongyeol Lim
- Department of Chemistry; Sejong University; Seoul 143-747 Republic of Korea
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