1
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Kokkaliari S, Grauso L, Mangoni A, Seabra G, Paul VJ, Luesch H. Isolation, Structure Elucidation, and Biological Activity of the Selective TACR2 Antagonist Tumonolide and its Aldehyde from a Marine Cyanobacterium. Chemistry 2024:e202401393. [PMID: 39023398 DOI: 10.1002/chem.202401393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2024]
Abstract
The macrocyclic tumonolide (1) with enamide functionality and the linear tumonolide aldehyde (2) are new interconverting natural products from a marine cyanobacterium with a peptide-polyketide skeleton, representing a hybrid of apratoxins and palmyrolides or laingolides. The planar structures were established by NMR and mass spectrometry. The relative configuration of the stereogenically-rich apratoxin-like polyketide portion was determined using J-based configuration analysis. The absolute configuration of tumonolide (1) was determined by chiral analysis of the amino acid units and computational methods, followed by NMR chemical shift and ECD spectrum prediction, indicating all-R configuration for the polyketide portion, as in palmyrolide A and contrary to the all-S configuration in apratoxins. Functional screening against a panel of 168 GPCR targets revealed tumonolide (1) as a selective antagonist of TACR2 with an IC50 of 7.0 μM, closely correlating with binding affinity. Molecular docking studies established the binding mode and rationalized the selectivity for TACR2 over TACR1 and TACR3. RNA sequencing upon treatment of HCT116 colorectal cancer cells demonstrated activation of the pulmonary fibrosis idiopathic signaling pathway and the insulin secretion signaling pathway at 20 μM, indicating its potential to modulate these pathways.
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Affiliation(s)
- Sofia Kokkaliari
- Department of Medicinal Chemistry and Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida, 1345 Center Drive, Gainesville, Florida 32610, United States
| | - Laura Grauso
- Dipartimento di Agraria, Università degli Studi di Napoli Federico II, 80055 Portici, Napoli, Italy
| | - Alfonso Mangoni
- Dipartimento di Farmacia, Università degli Studi di Napoli Federico II, 80131, Napoli, Italy
| | - Gustavo Seabra
- Department of Medicinal Chemistry and Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida, 1345 Center Drive, Gainesville, Florida 32610, United States
| | - Valerie J Paul
- Smithsonian Marine Station at Ft. Pierce, 701 Seaway Drive, Ft. Pierce, Florida 34949, United States
| | - Hendrik Luesch
- Department of Medicinal Chemistry and Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida, 1345 Center Drive, Gainesville, Florida 32610, United States
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2
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Maben Z, Arya R, Georgiadis D, Stratikos E, Stern LJ. Conformational dynamics linked to domain closure and substrate binding explain the ERAP1 allosteric regulation mechanism. Nat Commun 2021; 12:5302. [PMID: 34489420 PMCID: PMC8421391 DOI: 10.1038/s41467-021-25564-w] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 08/10/2021] [Indexed: 11/27/2022] Open
Abstract
The endoplasmic-reticulum aminopeptidase ERAP1 processes antigenic peptides for loading on MHC-I proteins and recognition by CD8 T cells as they survey the body for infection and malignancy. Crystal structures have revealed ERAP1 in either open or closed conformations, but whether these occur in solution and are involved in catalysis is not clear. Here, we assess ERAP1 conformational states in solution in the presence of substrates, allosteric activators, and inhibitors by small-angle X-ray scattering. We also characterize changes in protein conformation by X-ray crystallography, and we localize alternate C-terminal binding sites by chemical crosslinking. Structural and enzymatic data suggest that the structural reconfigurations of ERAP1 active site are physically linked to domain closure and are promoted by binding of long peptide substrates. These results clarify steps required for ERAP1 catalysis, demonstrate the importance of conformational dynamics within the catalytic cycle, and provide a mechanism for the observed allosteric regulation and Lys/Arg528 polymorphism disease association.
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Affiliation(s)
- Zachary Maben
- Department of Pathology, University of Massachusetts Medical School, Worcester, MA, USA
| | - Richa Arya
- Department of Pathology, University of Massachusetts Medical School, Worcester, MA, USA
| | - Dimitris Georgiadis
- Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece
| | - Efstratios Stratikos
- Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece
| | - Lawrence J Stern
- Department of Pathology, University of Massachusetts Medical School, Worcester, MA, USA.
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3
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Andler O, Kazmaier U. Total synthesis of apratoxin A and B using Matteson's homologation approach. Org Biomol Chem 2021; 19:4866-4870. [PMID: 33998628 DOI: 10.1039/d1ob00713k] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Apratoxin A and B, two members of an interesting class of marine cyclodepsipeptides are synthesized in a straightforward manner via Matteson homologation. Starting from a chiral boronic ester, the polyketide fragment of the apratoxins was obtained via five successive homologation steps in an overall yield of 27% and very good diastereoselectivity. This approach is highly flexible and should allow modification also of this part of the natural products, while previous modifications have been carried out mainly in the peptide fragment.
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Affiliation(s)
- Oliver Andler
- Organic Chemistry, Saarland University, P.O. Box 151150, 66041 Saarbrücken, Germany.
| | - Uli Kazmaier
- Organic Chemistry, Saarland University, P.O. Box 151150, 66041 Saarbrücken, Germany.
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4
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Masuda Y. Bioactive 3D structures of naturally occurring peptides and their application in drug design. Biosci Biotechnol Biochem 2021; 85:24-32. [PMID: 33577656 DOI: 10.1093/bbb/zbaa008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 09/10/2020] [Indexed: 11/14/2022]
Abstract
Naturally occurring peptides form unique 3D structures, which are critical for their bioactivities. To gain useful insights into drug design, the relationship between the 3D structure and bioactivity of the peptides has been studied. Solid-state nuclear magnetic resonance (NMR) analysis of the 42-residue amyloid β-protein (Aβ42) suggested the presence of toxic conformers with a turn structure at positions 22 and 23 in the aggregates. Antibodies specific to this turn structure could be utilized for immunotherapy and early diagnosis of Alzheimer's disease. Solution NMR analysis of apratoxin A, a cyclic depsipeptide with potent cytotoxicity, proposed an accurate structural model with an important bend structure, which led to the development of highly active mimetics. X-ray crystal analysis of PF1171F, a cyclic hexapeptide with insecticidal activity, indicated the formation of 4 intramolecular hydrogen bonds, which play an important role in cell membrane permeability of PF1171F.
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Affiliation(s)
- Yuichi Masuda
- Graduate School of Bioresources, Mie University, Tsu, Japan
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5
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Xu J, Zhang T, Yao J, Lu J, Liu Z, Ding L. Recent advances in chemistry and bioactivity of marine cyanobacteria Moorea species. Eur J Med Chem 2020; 201:112473. [PMID: 32652435 DOI: 10.1016/j.ejmech.2020.112473] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 05/14/2020] [Accepted: 05/15/2020] [Indexed: 12/27/2022]
Abstract
Cyanobacteria are one of the oldest creatures on earth, originated 3.5-3.3 billion years ago, and are distributed all over the world, including freshwater ponds and lakes, hot springs, and polar ice, especially in tropical and subtropical marine locations. Due to their large multimodular non-ribosomal peptide synthetases (NRPS) and polyketide synthases (PKS) biosynthetic machinery, cyanobacteria have represented a significant new source of structurally bioactive secondary metabolites. Moorea as a prolific producer have yielded lots of natural products with a variety of bioactivities such as highly cytotoxicity, anticancer activity, ion channel blocking activity, brine shrimp toxicity and other activities. Some of secondary metabolites have been identified as potential lead compounds for the development of anticancer agents. In this review, a total of 111 bioactive marine cyanobacterial secondary metabolites from the genus Moorea, published in the 54 literatures updated to the middle of 2019 and some synthetic analogues, are discussed with emphasis on their structures and biological activities.
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Affiliation(s)
- Jianzhou Xu
- 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, 315832, China
| | - Ting Zhang
- 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, 315832, China
| | - Jiaxiao Yao
- 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, 315832, China
| | - Jian Lu
- 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, 315832, China
| | - Zhiwen Liu
- 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, 315832, China
| | - Lijian Ding
- 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, 315832, China.
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6
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Mavridis G, Arya R, Domnick A, Zoidakis J, Makridakis M, Vlahou A, Mpakali A, Lelis A, Georgiadis D, Tampé R, Papakyriakou A, Stern LJ, Stratikos E. A systematic re-examination of processing of MHCI-bound antigenic peptide precursors by endoplasmic reticulum aminopeptidase 1. J Biol Chem 2020; 295:7193-7210. [PMID: 32184355 PMCID: PMC7247305 DOI: 10.1074/jbc.ra120.012976] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 03/09/2020] [Indexed: 11/06/2022] Open
Abstract
Endoplasmic reticulum aminopeptidase 1 (ERAP1) trims antigenic peptide precursors to generate mature antigenic peptides for presentation by major histocompatibility complex class I (MHCI) molecules and regulates adaptive immune responses. ERAP1 has been proposed to trim peptide precursors both in solution and in preformed MHCI-peptide complexes, but which mode is more relevant to its biological function remains controversial. Here, we compared ERAP1-mediated trimming of antigenic peptide precursors in solution or when bound to three MHCI alleles, HLA-B*58, HLA-B*08, and HLA-A*02. For all MHCI-peptide combinations, peptide binding onto MHCI protected against ERAP1-mediated trimming. In only a single MHCI-peptide combination, trimming of an HLA-B*08-bound 12-mer progressed at a considerable rate, albeit still slower than in solution. Results from thermodynamic, kinetic, and computational analyses suggested that this 12-mer is highly labile and that apparent on-MHC trimming rates are always slower than that of MHCI-peptide dissociation. Both ERAP2 and leucine aminopeptidase, an enzyme unrelated to antigen processing, could trim this labile peptide from preformed MHCI complexes as efficiently as ERAP1. A pseudopeptide analogue with high affinity for both HLA-B*08 and the ERAP1 active site could not promote the formation of a ternary ERAP1/MHCI/peptide complex. Similarly, no interactions between ERAP1 and purified peptide-loading complex were detected in the absence or presence of a pseudopeptide trap. We conclude that MHCI binding protects peptides from ERAP1 degradation and that trimming in solution along with the dynamic nature of peptide binding to MHCI are sufficient to explain ERAP1 processing of antigenic peptide precursors.
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Affiliation(s)
- George Mavridis
- National Centre for Scientific Research Demokritos, Agia Paraskevi 15341, Greece
| | - Richa Arya
- University of Massachusetts Medical School, Worcester, Massachusetts 01655
| | - Alexander Domnick
- Institute of Biochemistry, Biocenter, Goethe University Frankfurt, Max-von-Laue-Strasse 9, D-60438 Frankfurt/Main, Germany
| | - Jerome Zoidakis
- Centre of Basic Research, Biomedical Research Foundation of the Academy of Athens, Athens 11527, Greece
| | - Manousos Makridakis
- Centre of Basic Research, Biomedical Research Foundation of the Academy of Athens, Athens 11527, Greece
| | - Antonia Vlahou
- Centre of Basic Research, Biomedical Research Foundation of the Academy of Athens, Athens 11527, Greece
| | - Anastasia Mpakali
- National Centre for Scientific Research Demokritos, Agia Paraskevi 15341, Greece
| | - Angelos Lelis
- Laboratory of Organic Chemistry, Chemistry Department, University of Athens, Athens 15772, Greece
| | - Dimitris Georgiadis
- Laboratory of Organic Chemistry, Chemistry Department, University of Athens, Athens 15772, Greece
| | - Robert Tampé
- Institute of Biochemistry, Biocenter, Goethe University Frankfurt, Max-von-Laue-Strasse 9, D-60438 Frankfurt/Main, Germany
| | | | - Lawrence J Stern
- University of Massachusetts Medical School, Worcester, Massachusetts 01655
| | - Efstratios Stratikos
- National Centre for Scientific Research Demokritos, Agia Paraskevi 15341, Greece.
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7
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Doi T, Onda Y, Fukushi K, Ohsawa K, Yoshida M, Masuda Y. Synthesis of a Biphenylalanine Analogue of Apratoxin A Displaying Substantially Enhanced Cytotoxicity. HETEROCYCLES 2020. [DOI: 10.3987/com-19-s(f)35] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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8
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Itoh H, Inoue M. Comprehensive Structure–Activity Relationship Studies of Macrocyclic Natural Products Enabled by Their Total Syntheses. Chem Rev 2019; 119:10002-10031. [DOI: 10.1021/acs.chemrev.9b00063] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Hiroaki Itoh
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masayuki Inoue
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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9
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Abstract
This review describes a selection of macrocyclic natural products and structurally modified analogs containing peptidic and non-peptidic elements as structural features that potentially modulate cellular permeability. Examples range from exclusively peptidic structures like cyclosporin A or phepropeptins to compounds with mostly non-peptidic character, such as telomestatin or largazole. Furthermore, semisynthetic approaches and synthesis platforms to generate general and focused libraries of compounds at the interface of cyclic peptides and non-peptidic macrocycles are discussed.
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10
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Trost BM, Kalnmals CA, Tracy JS, Bai WJ. Highly Chemoselective Deprotection of the 2,2,2-Trichloroethoxycarbonyl (Troc) Protecting Group. Org Lett 2018; 20:8043-8046. [DOI: 10.1021/acs.orglett.8b03642] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Barry M. Trost
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | | | - Jacob S. Tracy
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Wen-Ju Bai
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
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11
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Doi T, Masuda Y, Yoshida M. Cyclodepsipeptide Natural Products Apratoxins A and C and Their Analogs. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.1170] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Takayuki Doi
- Graduate School of Pharmaceutical Sciences, Tohoku University
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12
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Xing H, Tong M, Jiang N, Zhang X, Hu H, Pan H, Li D. Antitumour bioactive peptides isolated from marine organisms. Clin Exp Pharmacol Physiol 2018; 44:1077-1082. [PMID: 28675498 DOI: 10.1111/1440-1681.12808] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 06/28/2017] [Accepted: 06/28/2017] [Indexed: 11/30/2022]
Abstract
Marine organisms are an important source of antitumour active substances. Thus, pharmaceutical research in recent years has focused on exploring new antitumour drugs derived from marine organisms, and, many peptide drugs with strong antitumour activities have been successfully extracted. Based on different mechanisms, this paper reviews the research on several typical antitumour bioactive peptides in marine drugs and the latest progress therein. Additionally, the development prospects for these antitumour bioactive peptide-based drugs are discussed so as to provide a reference for future research in this field.
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Affiliation(s)
- Haibo Xing
- Department of ICU, Xiasha Campus, Sir Run Run Shaw Hospital Affiliated to Zhejiang University, School of Medicine, Hangzhou, China
| | - Mengting Tong
- Department of Medical Oncology, Sir Run Run Shaw Hospital Affiliated to Zhejiang University, School of Medicine, Hangzhou, China
| | - Nanyu Jiang
- Department of Medical Oncology, Sir Run Run Shaw Hospital Affiliated to Zhejiang University, School of Medicine, Hangzhou, China
| | - Xiaomin Zhang
- Department of Medical Oncology, Sir Run Run Shaw Hospital Affiliated to Zhejiang University, School of Medicine, Hangzhou, China
| | - Hong Hu
- Department of Medical Oncology, Sir Run Run Shaw Hospital Affiliated to Zhejiang University, School of Medicine, Hangzhou, China
| | - Hongming Pan
- Department of Medical Oncology, Sir Run Run Shaw Hospital Affiliated to Zhejiang University, School of Medicine, Hangzhou, China
| | - Da Li
- Department of Medical Oncology, Sir Run Run Shaw Hospital Affiliated to Zhejiang University, School of Medicine, Hangzhou, China
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13
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14
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Novel Effective Small-Molecule Antibacterials against Enterococcus Strains. Molecules 2017; 22:molecules22122193. [PMID: 29232858 PMCID: PMC6149733 DOI: 10.3390/molecules22122193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 11/24/2017] [Accepted: 11/29/2017] [Indexed: 11/16/2022] Open
Abstract
Enterococcus species cause increasing numbers of infections in hospitals. They contribute to the increasing mortality rates, mostly in patients with comorbidities, who suffer from severe diseases. Enterococcus resistances against most antibiotics have been described, including novel antibiotics. Therefore, there is an ongoing demand for novel types of antibiotics that may overcome bacterial resistances. We discovered a novel class of antibiotics resulting from a simple one-pot reaction of indole and o-phthaldialdehyde. Differently substituted indolyl benzocarbazoles were yielded. Both the indole substitution and the positioning at the molecular scaffold influence the antibacterial activity towards the various strains of Enterococcus species with the highest relevance to nosocomial infections. Structure-activity relationships are discussed, and the first lead compounds were identified as also being effective in the case of a vancomycin resistance.
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15
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Cai W, Chen QY, Dang LH, Luesch H. Apratoxin S10, a Dual Inhibitor of Angiogenesis and Cancer Cell Growth To Treat Highly Vascularized Tumors. ACS Med Chem Lett 2017; 8:1007-1012. [PMID: 29057042 DOI: 10.1021/acsmedchemlett.7b00192] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 09/06/2017] [Indexed: 11/30/2022] Open
Abstract
Renal, hepatocellular, and neuroendocrine carcinomas are known as highly vascularized tumors. Although vascular endothelial growth factor A (VEGF-A)-targeted therapies have shown efficacy in the treatment of these cancers, drug resistance is a major concern and might be mediated by interleukin 6 (IL-6). Furthermore, upon antiangiogenic drug exposure, tumor cells may adapt to survive in a vascular-independent manner. Apratoxins are potent marine-derived cytotoxic in vivo-active agents, preventing cotranslational translocation in the secretory pathway, and show promise to overcome resistance by targeting angiogenesis and tumor growth simultaneously. We designed and synthesized a novel apratoxin analogue, apratoxin S10, with a balanced potency and stability as well as synthetic accessibility and scalability. We showed that apratoxin S10 potently inhibits both angiogenesis in vitro and growth of cancer cells from vascularized tumors. Apratoxin S10 down-regulated vascular endothelial growth factor receptor 2 (VEGFR2) on endothelial cells and blocked the secretion of VEGF-A and IL-6 from cancer cells. It inhibited cancer cell growth through down-regulation of multiple receptor tyrosine kinases (RTKs) and compares favorably to currently approved RTK inhibitors in both angiogenesis and cancer cell growth.
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Affiliation(s)
- Weijing Cai
- Department
of Medicinal Chemistry, ‡Center for Natural Products, Drug Discovery
and Development (CNPD3), and ∥Department of Medicine, University of Florida, Gainesville, Florida 32610, United States
| | - Qi-Yin Chen
- Department
of Medicinal Chemistry, ‡Center for Natural Products, Drug Discovery
and Development (CNPD3), and ∥Department of Medicine, University of Florida, Gainesville, Florida 32610, United States
| | - Long H. Dang
- Department
of Medicinal Chemistry, ‡Center for Natural Products, Drug Discovery
and Development (CNPD3), and ∥Department of Medicine, University of Florida, Gainesville, Florida 32610, United States
| | - Hendrik Luesch
- Department
of Medicinal Chemistry, ‡Center for Natural Products, Drug Discovery
and Development (CNPD3), and ∥Department of Medicine, University of Florida, Gainesville, Florida 32610, United States
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16
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Wu P, Xu H, Li Z, Zhou Y, Li Y, Zhang W. Synthesis and biological evaluation of oxoapratoxin E and its C30 epimer. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.07.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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17
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Onda Y, Masuda Y, Yoshida M, Doi T. Conformation-Based Design and Synthesis of Apratoxin A Mimetics Modified at the α,β-Unsaturated Thiazoline Moiety. J Med Chem 2017; 60:6751-6765. [DOI: 10.1021/acs.jmedchem.7b00833] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yuichi Onda
- Graduate School
of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki,
Aoba-ku, Sendai, Miyagi 980-8578, Japan
- Mitsubishi Tanabe Pharma Corporation, 2-2-50,
Kawagishi, Toda-shi, Saitama 335-8505, Japan
| | - Yuichi Masuda
- Graduate School
of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki,
Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Masahito Yoshida
- Graduate School
of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki,
Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Takayuki Doi
- Graduate School
of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki,
Aoba-ku, Sendai, Miyagi 980-8578, Japan
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18
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Yoshida M, Onda Y, Masuda Y, Doi T. Potent oxazoline analog of apratoxin C: Synthesis, biological evaluation, and conformational analysis. Biopolymers 2016; 106:404-14. [PMID: 26584466 DOI: 10.1002/bip.22781] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 10/29/2015] [Accepted: 11/02/2015] [Indexed: 11/06/2022]
Abstract
In this research, the synthesis, biological evaluation, and conformational analysis of an apratoxin C oxazoline analog (3) have been demonstrated. The preparation of synthetic key intermediate 9 was achieved using an improved strategy that involves commercially available 3-methylglutaric anhydride (12), an enzymatic enantioselective alcoholysis, and a diastereoselective reduction. The Pro-Dtrina (3,7-dihydroxy-2,5,8-trimethylnonanoic acid) moiety 8 was successfully synthesized in a similar manner as our previously reported synthesis of apratoxin C (1). The cyclization precursor 5 was formed after the coupling of Pro-Dtrina 8 with a known tetrapeptide 7 to afford a linear peptide 6, the formation of an oxazoline, and the removal of the protecting groups. Finally, the macrolactamization of 5 with O-(7-aza-1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate (HATU)/N,N-diisopropylethylamine (DIEA) furnished an apratoxin C oxazoline analog (3), which exhibited a potent cytotoxicity against HeLa cells (IC50 value of 22 nM) that was comparable with the cytotoxicity of apratoxin C (1) (IC50 value of 4.2 nM). Conformational analyses of 1 and 3 through NMR experiments showed that oxazoline analog 3 formed a tertiary structure that was similar to the apratoxin C (1) structure in CD3 CN, which provided a probable explanation for their comparable cytotoxicities. © 2015 Wiley Periodicals, Inc. Biopolymers (Pept Sci) 106: 404-414, 2016.
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Affiliation(s)
- Masahito Yoshida
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-Ku, Sendai, 980-8578, Japan
| | - Yuichi Onda
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-Ku, Sendai, 980-8578, Japan.,Mitsubishi Tanabe Pharma Corporation, 2-2-50 Kawagishi, Toda-Shi, Saitama, 335-8505, Japan
| | - Yuichi Masuda
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-Ku, Sendai, 980-8578, Japan
| | - Takayuki Doi
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-Ku, Sendai, 980-8578, Japan
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19
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Mao ZY, Si CM, Liu YW, Dong HQ, Wei BG, Lin GQ. Asymmetric Synthesis of Apratoxin E. J Org Chem 2016; 81:9903-9911. [DOI: 10.1021/acs.joc.6b02086] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhuo-Ya Mao
- Department
of Natural Products Chemistry, School of Pharmacy, Fudan University, 826
Zhangheng Road, Shanghai 201203, China
- Institutes
of Biomedical Sciences, Fudan University, 130 Dongan Road, Shanghai 200032, China
| | - Chang-Mei Si
- Department
of Natural Products Chemistry, School of Pharmacy, Fudan University, 826
Zhangheng Road, Shanghai 201203, China
| | - Yi-Wen Liu
- Institutes
of Biomedical Sciences, Fudan University, 130 Dongan Road, Shanghai 200032, China
| | - Han-Qing Dong
- Institutes
of Biomedical Sciences, Fudan University, 130 Dongan Road, Shanghai 200032, China
| | - Bang-Guo Wei
- Department
of Natural Products Chemistry, School of Pharmacy, Fudan University, 826
Zhangheng Road, Shanghai 201203, China
| | - Guo-Qiang Lin
- Department
of Natural Products Chemistry, School of Pharmacy, Fudan University, 826
Zhangheng Road, Shanghai 201203, China
- Institutes
of Biomedical Sciences, Fudan University, 130 Dongan Road, Shanghai 200032, China
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Cyanobacterial Metabolite Calothrixins: Recent Advances in Synthesis and Biological Evaluation. Mar Drugs 2016; 14:17. [PMID: 26771620 PMCID: PMC4728514 DOI: 10.3390/md14010017] [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: 08/05/2015] [Revised: 12/22/2015] [Accepted: 01/04/2016] [Indexed: 12/30/2022] Open
Abstract
The marine environment is host to unparalleled biological and chemical diversity, making it an attractive resource for the discovery of new therapeutics for a plethora of diseases. Compounds that are extracted from cyanobacteria are of special interest due to their unique structural scaffolds and capacity to produce potent pharmaceutical and biotechnological traits. Calothrixins A and B are two cyanobacterial metabolites with a structural assembly of quinoline, quinone, and indole pharmacophores. This review surveys recent advances in the synthesis and evaluation of the biological activities of calothrixins. Due to the low isolation yields from the marine source and the promise this scaffold holds for anticancer and antimicrobial drugs, organic and medicinal chemists around the world have embarked on developing efficient synthetic routes to produce calothrixins. Since the first review appeared in 2009, 11 novel syntheses of calothrixins have been published in the efforts to develop methods that contain fewer steps and higher-yielding reactions. Calothrixins have shown their potential as topoisomerase I poisons for their cytotoxicity in cancer. They have also been observed to target various aspects of RNA synthesis in bacteria. Further investigation into the exact mechanism for their bioactivity is still required for many of its analogs.
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Yoshida M, Ishida Y, Adachi K, Murase H, Nakagawa H, Doi T. Solid-Phase Combinatorial Synthesis and Biological Evaluation of Destruxin E Analogues. Chemistry 2015; 21:18417-30. [DOI: 10.1002/chem.201502970] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 09/17/2015] [Indexed: 11/12/2022]
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Tarsis EM, Rastelli EJ, Wengryniuk SE, Coltart DM. The apratoxin marine natural products: isolation, structure determination, and asymmetric total synthesis. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.05.047] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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23
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Dey S, Wengryniuk SE, Tarsis EM, Robertson BD, Zhou G, Coltart DM. A formal asymmetric synthesis of apratoxin D via advanced-stage asymmetric ACC α,α-bisalkylation of a chiral nonracemic ketone. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.04.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Masuda Y, Tanaka R, Kai K, Ganesan A, Doi T. Total Synthesis and Biological Evaluation of PF1171A, C, F, and G, Cyclic Hexapeptides with Insecticidal Activity. J Org Chem 2014; 79:7844-53. [DOI: 10.1021/jo500861k] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yuichi Masuda
- Graduate
School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba,
Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Ren Tanaka
- Graduate
School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba,
Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Kenji Kai
- Graduate
School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - A. Ganesan
- School
of Pharmacy, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, United Kingdom
| | - Takayuki Doi
- Graduate
School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba,
Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
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Masuda Y, Suzuki J, Onda Y, Fujino Y, Yoshida M, Doi T. Total Synthesis and Conformational Analysis of Apratoxin C. J Org Chem 2014; 79:8000-9. [DOI: 10.1021/jo501130b] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuichi Masuda
- Graduate
School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba,
Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Jun Suzuki
- Graduate
School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba,
Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Yuichi Onda
- Graduate
School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba,
Aramaki, Aoba-ku, Sendai 980-8578, Japan
- Mitsubishi Tanabe
Pharma Corporation, 2-2-50, Kawagishi,
Toda-shi, Saitama 335-8505, Japan
| | - Yuta Fujino
- Graduate
School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba,
Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Masahito Yoshida
- Graduate
School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba,
Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Takayuki Doi
- Graduate
School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba,
Aramaki, Aoba-ku, Sendai 980-8578, Japan
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26
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Fuse S, Koinuma H, Kimbara A, Izumikawa M, Mifune Y, He H, Shin-ya K, Takahashi T, Doi T. Total Synthesis and Stereochemistry Revision of Mannopeptimycin Aglycone. J Am Chem Soc 2014; 136:12011-7. [DOI: 10.1021/ja505105t] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shinichiro Fuse
- Department
of Applied Chemistry, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8552, Japan
| | - Hirotsugu Koinuma
- Department
of Applied Chemistry, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8552, Japan
| | - Atsushi Kimbara
- Department
of Applied Chemistry, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8552, Japan
| | - Miho Izumikawa
- Japan Biological Informatics Consortium (JBIC), Koto-ku, Tokyo 135-0064, Japan
| | - Yuto Mifune
- Department
of Applied Chemistry, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8552, Japan
| | - Haiyin He
- Natural
Products Laboratory, Worldwide Medicinal Chemistry, Pfizer Worldwide Research and Development, Groton, Connecticut 06340, United States
| | - Kazuo Shin-ya
- National Institute of Advanced Industrial Science and Technology (AIST), Koto-ku, Tokyo 135-0064, Japan
| | | | - Takayuki Doi
- Graduate
School of Pharmaceutical Sciences, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
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Chen QY, Liu Y, Cai W, Luesch H. Improved total synthesis and biological evaluation of potent apratoxin S4 based anticancer agents with differential stability and further enhanced activity. J Med Chem 2014; 57:3011-29. [PMID: 24660812 PMCID: PMC3993931 DOI: 10.1021/jm4019965] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Apratoxins are cytotoxic natural products originally isolated from marine cyanobacteria that act by preventing cotranslational translocation early in the secretory pathway to downregulate receptor levels and inhibit growth factor secretion, leading to potent antiproliferative activity. Through rational design and total synthesis of an apratoxin A/E hybrid, apratoxin S4 (1a), we have previously improved the antitumor activity and tolerability in vivo. Compound 1a and newly designed analogues apratoxins S7-S9 (1b-d), with various degrees of methylation at C34 (1b,c) or epimeric configuration at C30 (1d), were efficiently synthesized utilizing improved procedures. Optimizations have been applied to the synthesis of key intermediate aldehyde 7 and further include the application of Leighton's silanes and modifications of Kelly's methods to induce thiazoline ring formation in other crucial steps of the apratoxin synthesis. Apratoxin S9 (1d) exhibited increased activity with subnanomolar potency. Apratoxin S8 (1c) lacks the propensity to be deactivated by dehydration and showed efficacy in a human HCT116 xenograft mouse model.
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Affiliation(s)
- Qi-Yin Chen
- Department of Medicinal Chemistry and ‡Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida , Gainesville, Florida, United States
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A survey of marine natural compounds and their derivatives with anti-cancer activity reported in 2011. Molecules 2013; 18:3641-73. [PMID: 23529027 PMCID: PMC6270579 DOI: 10.3390/molecules18043641] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Revised: 03/07/2013] [Accepted: 03/11/2013] [Indexed: 12/13/2022] Open
Abstract
Cancer continues to be a major public health problem despite the efforts that have been made in the search for novel drugs and treatments. The current sources sought for the discovery of new molecules are plants, animals and minerals. During the past decade, the search for anticancer agents of marine origin to fight chemo-resistance has increased greatly. Each year, several novel anticancer molecules are isolated from marine organisms and represent a renewed hope for cancer therapy. The study of structure-function relationships has allowed synthesis of analogues with increased efficacy and less toxicity. In this report, we aim to review 42 compounds of marine origin and their derivatives that were published in 2011 as promising anticancer compounds.
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Tello-Aburto R, Newar TD, Maio WA. Evolution of a protecting-group-free total synthesis: studies en route to the neuroactive marine macrolide (-)-palmyrolide A. J Org Chem 2012; 77:6271-89. [PMID: 22721171 DOI: 10.1021/jo301121f] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A full account of our synthetic work toward the first total synthesis of the neuroactive marine macrolide (-)-palmyrolide A is described. Our first-generation approach aimed to unlock the unknown C(5)-C(7) stereochemical relationship via the synthesis of four diastereomers of palmyrolide A aldehyde, a known degradation product. When these efforts provided inconclusive results, recourse to synthesizing all possible stereocombinations of the 15-membered macrolide was undertaken. These studies were critical in confirming the absolute stereochemistry, yielding the first total synthesis of (+)-ent-palmyrolide A. Subsequent to this work, the first protecting-group-free total synthesis of natural (-)-palmyrolide A is also reported.
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Affiliation(s)
- Rodolfo Tello-Aburto
- Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, New Mexico 88003, USA
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Marine Cyanobacteria. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/b978-0-444-53836-9.00021-9] [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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Chen QY, Liu Y, Luesch H. Systematic Chemical Mutagenesis Identifies a Potent Novel Apratoxin A/E Hybrid with Improved in Vivo Antitumor Activity. ACS Med Chem Lett 2011; 2:861-865. [PMID: 22081789 PMCID: PMC3212850 DOI: 10.1021/ml200176m] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2011] [Accepted: 08/21/2011] [Indexed: 01/19/2023] Open
Abstract
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Apratoxins are cytotoxic marine natural products that prevent cotranslational translocation early in the secretory pathway. We showed that apratoxins downregulate receptors and growth factor ligands, giving a one–two punch to cancer cells, particularly those that rely on autocrine loops. Through total synthesis, we tested the effects of amino acid substitutions, including alanine scanning, on the downregulation of receptor tyrosine kinases and vascular endothelial growth factor A (VEGF-A) and probed the stereospecificity of target engagement by epimerization of selected chiral centers. Differential effects on two types of secretory molecules suggest that the apratoxins' substrate selectivity with respect to inhibition of secretion may be tuned through structural modifications to provide tailored therapy. Our structure–activity relationship studies and medicinal chemistry efforts led to a potent inhibitor with in vivo efficacy in a colorectal tumor xenograft model without irreversible toxicity exerted by apratoxin A, demonstrating that this novel mechanism of action has therapeutic potential.
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Affiliation(s)
- Qi-Yin Chen
- Department of Medicinal Chemistry, University of Florida, Gainesville, Florida 32610, United States
| | - Yanxia Liu
- Department of Medicinal Chemistry, University of Florida, Gainesville, Florida 32610, United States
| | - Hendrik Luesch
- Department of Medicinal Chemistry, University of Florida, Gainesville, Florida 32610, United States
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