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Al-Antary ET, Gupte A, Carter J, Kaafarani M, Howard M, Edwards H, Ge Y, Taub JW. Curing childhood cancer the "Natural" Way: Nature as the source of chemotherapy agents. Biochem Pharmacol 2023; 213:115630. [PMID: 37263301 DOI: 10.1016/j.bcp.2023.115630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 05/24/2023] [Accepted: 05/24/2023] [Indexed: 06/03/2023]
Abstract
For many centuries, products of natural origin from plants, marine, microbes and soil micro-organisms have been studied by numerous researchers across the world to yield many of the chemotherapeutic agents we use in this modern era. There has been a tremendous gain in knowledge from various screening and separating techniques which led to the discovery of biologically active small molecules from natural products. Preclinical studies testing the antitumor activities of these agents against tumor cell lines and xenograft animal models were the gateway to the clinical trials in humans leading to the approval of these agents that are in clinical use today. This review summarizes how various chemotherapeutic agents were discovered from products of natural origin, their preclinical development, and their indications in both pediatric and adult oncology. Many of these natural products have contributed to the very high cure rates of both pediatric leukemias and solid tumors.
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Affiliation(s)
- Eman T Al-Antary
- Division of Pediatric Hematology/Oncology, Children's Hospital of Michigan, Detroit, MI, USA; Discipline of Pediatrics, Central Michigan University, Mt. Pleasant, MI, USA
| | - Avanti Gupte
- Division of Pediatric Hematology/Oncology, Children's Hospital of Michigan, Detroit, MI, USA; Discipline of Pediatrics, Central Michigan University, Mt. Pleasant, MI, USA
| | - Jenna Carter
- Cancer Biology Graduate Program, Wayne State University School of Medicine, Detroit, MI, USA; MD/PhD Program, Wayne State University School of Medicine, Detroit, MI, USA
| | | | | | - Holly Edwards
- Department of Oncology, Wayne State University School of Medicine, Detroit, MI, USA; Molecular Therapeutics Program, Barbara Ann Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI, USA
| | - Yubin Ge
- Cancer Biology Graduate Program, Wayne State University School of Medicine, Detroit, MI, USA; Department of Oncology, Wayne State University School of Medicine, Detroit, MI, USA; Molecular Therapeutics Program, Barbara Ann Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI, USA
| | - Jeffrey W Taub
- Division of Pediatric Hematology/Oncology, Children's Hospital of Michigan, Detroit, MI, USA; Discipline of Pediatrics, Central Michigan University, Mt. Pleasant, MI, USA; Cancer Biology Graduate Program, Wayne State University School of Medicine, Detroit, MI, USA; Molecular Therapeutics Program, Barbara Ann Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI, USA; Department of Pediatrics, Wayne State University School of Medicine, Detroit, MI, USA.
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2
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Akiyama Y, Kimura K, Komatsu S, Takarada T, Maeda M, Kikuchi A. A Simple Colorimetric Assay of Bleomycin-Mediated DNA Cleavage Utilizing Double-Stranded DNA-Modified Gold Nanoparticles. Chembiochem 2023; 24:e202200451. [PMID: 36156837 PMCID: PMC10092608 DOI: 10.1002/cbic.202200451] [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: 08/04/2022] [Revised: 09/23/2022] [Indexed: 01/05/2023]
Abstract
A colorimetric assay of DNA cleavage by bleomycin (BLM) derivatives was developed utilizing high colloidal stability on double-stranded (ds) DNA-modified gold nanoparticles (dsDNA-AuNPs) possessing a cleavage site. The assay was performed using dsDNA-AuNPs treated with inactive BLM or activated BLM (Fe(II)⋅BLM). A 10-min exposure in dsDNA-AuNPs with inactive BLM treatment resulted in a rapid color change from red to purple because of salt-induced non-crosslinking aggregation of dsDNA-AuNPs. In contrast, the addition of active Fe(II)⋅BLM retained the red color, probably because of the formation of protruding structures at the outermost phase of dsDNA-AuNPs caused by BLM-mediated DNA cleavage. Furthermore, the results of our model experiments indicate that oxidative base release and DNA-cleavage pathways could be visually distinguished with color change. The present methodology was also applicable to model screening assays using several drugs with different mechanisms related to antitumor activity. These results strongly suggest that this assay with a rapid color change could lead to simple and efficient screening of potent antitumor agents.
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Affiliation(s)
- Yoshitsugu Akiyama
- Katsushika Division, Institute of Arts and Sciences, Tokyo University of Science, 6-3-1 Niijuku, 125-8585, Katsushika, Tokyo, Japan.,Department of Materials Science and Technology, Graduate School of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, 125-8585, Katsushika, Tokyo, Japan
| | - Kazunori Kimura
- Department of Materials Science and Technology, Graduate School of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, 125-8585, Katsushika, Tokyo, Japan
| | - Syuuhei Komatsu
- Department of Materials Science and Technology, Graduate School of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, 125-8585, Katsushika, Tokyo, Japan
| | - Tohru Takarada
- Surface and Interface Science Laboratory, RIKEN, 2-1 Hirosawa, 351-0198, Wako, Saitama, Japan
| | - Mizuo Maeda
- RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, 351-0198, Wako, Saitama, Japan
| | - Akihiko Kikuchi
- Department of Materials Science and Technology, Graduate School of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, 125-8585, Katsushika, Tokyo, Japan
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3
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Zhang J, Shukla V, Boger DL. Inverse Electron Demand Diels-Alder Reactions of Heterocyclic Azadienes, 1-Aza-1,3-Butadienes, Cyclopropenone Ketals, and Related Systems. A Retrospective. J Org Chem 2019; 84:9397-9445. [PMID: 31062977 DOI: 10.1021/acs.joc.9b00834] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A summary of the investigation and applications of the inverse electron demand Diels-Alder reaction is provided that have been conducted in our laboratory over a period that now spans more than 35 years. The work, which continues to provide solutions to complex synthetic challenges, is presented in the context of more than 70 natural product total syntheses in which the reactions served as a key strategic step in the approach. The studies include the development and use of the cycloaddition reactions of heterocyclic azadienes (1,2,4,5-tetrazines; 1,2,4-, 1,3,5-, and 1,2,3-triazines; 1,2-diazines; and 1,3,4-oxadiazoles), 1-aza-1,3-butadienes, α-pyrones, and cyclopropenone ketals. Their applications illustrate the power of the methodology, often provided concise and nonobvious total syntheses of the targeted natural products, typically were extended to the synthesis of analogues that contain deep-seated structural changes in more comprehensive studies to explore or optimize their biological properties, and highlight a wealth of opportunities not yet tapped.
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Affiliation(s)
- Jiajun Zhang
- Department of Chemistry and The Skaggs Institute for Chemical Biology , The Scripps Research Institute , 10550 North Torrey Pines Road , La Jolla , California 92037 , United States
| | - Vyom Shukla
- Department of Chemistry and The Skaggs Institute for Chemical Biology , The Scripps Research Institute , 10550 North Torrey Pines Road , La Jolla , California 92037 , United States
| | - Dale L Boger
- Department of Chemistry and The Skaggs Institute for Chemical Biology , The Scripps Research Institute , 10550 North Torrey Pines Road , La Jolla , California 92037 , United States
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4
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Murray V, Chen JK, Yang D, Shen B. The genome-wide sequence specificity of DNA cleavage by bleomycin analogues in human cells. Bioorg Med Chem 2018; 26:4168-4178. [PMID: 30006142 DOI: 10.1016/j.bmc.2018.07.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 06/26/2018] [Accepted: 07/04/2018] [Indexed: 02/06/2023]
Abstract
Bleomycin (BLM) is a cancer chemotherapeutic agent that cleaves cellular DNA at specific sequences. Using next-generation Illumina sequencing, the genome-wide sequence specificity of DNA cleavage by two BLM analogues, 6'-deoxy-BLM Z and zorbamycin (ZBM), was determined in human HeLa cells and compared with BLM. Over 200 million double-strand breaks were examined for each sample, and the 50,000 highest intensity cleavage sites were analysed. It was found that the DNA sequence specificity of the BLM analogues in human cells was different to BLM, especially at the cleavage site (position "0") and the "+1" position. In human cells, the 6'-deoxy-BLM Z had a preference for 5'-GTGY*MC (where * is the cleavage site, Y is C or T, M is A or C); it was 5'-GTGY*MCA for ZBM; and 5'-GTGT*AC for BLM. With cellular DNA, the highest ranked tetranucleotides were 5'-TGC*C and 5'-TGT*A for 6'-deoxy-BLM Z; 5'-TGC*C, 5'-TGT*A and 5'-TGC*A for ZBM; and 5'-TGT*A for BLM. In purified human genomic DNA, the DNA sequence preference was 5'-TGT*A for 6'-deoxy-BLM, 5'-RTGY*AYR (where R is G or A) for ZBM, and 5'-TGT*A for BLM. Thus, the sequence specificity of the BLM analogue, 6'-deoxy-BLM Z, was similar to BLM in purified human DNA, while ZBM was different.
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Affiliation(s)
- Vincent Murray
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia.
| | - Jon K Chen
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| | - Dong Yang
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| | - Ben Shen
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia
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5
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Kong J, Yi L, Xiong Y, Huang Y, Yang D, Yan X, Shen B, Duan Y, Zhu X. The discovery and development of microbial bleomycin analogues. Appl Microbiol Biotechnol 2018; 102:6791-6798. [DOI: 10.1007/s00253-018-9129-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 05/21/2018] [Accepted: 05/22/2018] [Indexed: 11/29/2022]
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Murray V, Chen JK, Chung LH. The Interaction of the Metallo-Glycopeptide Anti-Tumour Drug Bleomycin with DNA. Int J Mol Sci 2018; 19:E1372. [PMID: 29734689 PMCID: PMC5983701 DOI: 10.3390/ijms19051372] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 04/24/2018] [Accepted: 04/24/2018] [Indexed: 11/17/2022] Open
Abstract
The cancer chemotherapeutic drug, bleomycin, is clinically used to treat several neoplasms including testicular and ovarian cancers. Bleomycin is a metallo-glycopeptide antibiotic that requires a transition metal ion, usually Fe(II), for activity. In this review, the properties of bleomycin are examined, especially the interaction of bleomycin with DNA. A Fe(II)-bleomycin complex is capable of DNA cleavage and this process is thought to be the major determinant for the cytotoxicity of bleomycin. The DNA sequence specificity of bleomycin cleavage is found to at 5′-GT* and 5′-GC* dinucleotides (where * indicates the cleaved nucleotide). Using next-generation DNA sequencing, over 200 million double-strand breaks were analysed, and an expanded bleomycin sequence specificity was found to be 5′-RTGT*AY (where R is G or A and Y is T or C) in cellular DNA and 5′-TGT*AT in purified DNA. The different environment of cellular DNA compared to purified DNA was proposed to be responsible for the difference. A number of bleomycin analogues have been examined and their interaction with DNA is also discussed. In particular, the production of bleomycin analogues via genetic manipulation of the modular non-ribosomal peptide synthetases and polyketide synthases in the bleomycin gene cluster is reviewed. The prospects for the synthesis of bleomycin analogues with increased effectiveness as cancer chemotherapeutic agents is also explored.
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Affiliation(s)
- Vincent Murray
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia.
| | - Jon K Chen
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia.
| | - Long H Chung
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia.
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Hernández K, Joglar J, Bujons J, Parella T, Clapés P. Nucleophile Promiscuity of Engineered Class II Pyruvate Aldolase YfaU from E. Coli. Angew Chem Int Ed Engl 2018; 57:3583-3587. [PMID: 29363239 DOI: 10.1002/anie.201711289] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 01/09/2018] [Indexed: 11/08/2022]
Abstract
Pyruvate-dependent aldolases exhibit a stringent selectivity for pyruvate, limiting application of their synthetic potential, which is a drawback shared with other existing aldolases. Structure-guided rational protein engineering rendered a 2-keto-3-deoxy-l-rhamnonate aldolase variant, fused with a maltose-binding protein (MBP-YfaU W23V/L216A), capable of efficiently converting larger pyruvate analogues, for example, those with linear and branched aliphatic chains, in aldol addition reactions. Combination of these nucleophiles with N-Cbz-alaninal (Cbz=benzyloxycarbonyl) and N-Cbz-prolinal electrophiles gave access to chiral building blocks, for example, derivatives of (2S,3S,4R)-4-amino-3-hydroxy-2-methylpentanoic acid (68 %, d.r. 90:10) and the enantiomer of dolaproine (33 %, d.r. 94:6) as well as a collection of unprecedented α-amino acid derivatives of the proline and pyrrolizidine type. Conversions varied between 6-93 % and diastereomeric ratios from 50:50 to 95:5 depending on the nucleophilic and electrophilic components.
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Affiliation(s)
- Karel Hernández
- Chemical Biology and Molecular Modelling, Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona 18-26, 08034, Barcelona, Spain
| | - Jesús Joglar
- Chemical Biology and Molecular Modelling, Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona 18-26, 08034, Barcelona, Spain
| | - Jordi Bujons
- Chemical Biology and Molecular Modelling, Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona 18-26, 08034, Barcelona, Spain
| | - Teodor Parella
- Servei de Ressonància Magnètica Nuclear, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Pere Clapés
- Chemical Biology and Molecular Modelling, Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona 18-26, 08034, Barcelona, Spain
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8
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Hernández K, Joglar J, Bujons J, Parella T, Clapés P. Nucleophile Promiscuity of Engineered Class II Pyruvate Aldolase YfaU from E. Coli. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711289] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Karel Hernández
- Chemical Biology and Molecular Modelling; Institute for Advanced Chemistry of Catalonia (IQAC-CSIC); Jordi Girona 18-26 08034 Barcelona Spain
| | - Jesús Joglar
- Chemical Biology and Molecular Modelling; Institute for Advanced Chemistry of Catalonia (IQAC-CSIC); Jordi Girona 18-26 08034 Barcelona Spain
| | - Jordi Bujons
- Chemical Biology and Molecular Modelling; Institute for Advanced Chemistry of Catalonia (IQAC-CSIC); Jordi Girona 18-26 08034 Barcelona Spain
| | - Teodor Parella
- Servei de Ressonància Magnètica Nuclear; Universitat Autònoma de Barcelona; Bellaterra Spain
| | - Pere Clapés
- Chemical Biology and Molecular Modelling; Institute for Advanced Chemistry of Catalonia (IQAC-CSIC); Jordi Girona 18-26 08034 Barcelona Spain
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9
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Strain improvement by combined UV mutagenesis and ribosome engineering and subsequent fermentation optimization for enhanced 6'-deoxy-bleomycin Z production. Appl Microbiol Biotechnol 2017; 102:1651-1661. [PMID: 29279956 DOI: 10.1007/s00253-017-8705-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Revised: 12/04/2017] [Accepted: 12/07/2017] [Indexed: 10/18/2022]
Abstract
The bleomycins (BLMs) are important clinical drugs extensively used in combination chemotherapy for the treatment of various cancers. Dose-dependent lung toxicity and the development of drug resistance have restricted their wide applications. 6'-Deoxy-BLM Z, a recently engineered BLM analogue with improved antitumor activity, has the potential to be developed into the next-generation BLM anticancer drug. However, its low titer in the recombinant strain Streptomyces flavoviridis SB9026 has hampered current efforts, which require sufficient compound, to pursue preclinical studies and subsequent clinical development. Here, we report the strain improvement by combined UV mutagenesis and ribosome engineering, as well as the fermentation optimization, for enhanced 6'-deoxy-BLM production. A high producer, named S. flavoviridis G-4F12, was successfully isolated, producing 6'-deoxy-BLM at above 70 mg/L under the optimized fermentation conditions, representing a sevenfold increase in comparison with that of the original producer. These findings demonstrated the effectiveness of combined empirical breeding methods in strain improvement and set the stage for sustainable production of 6'-deoxy-BLM via pilot-scale microbial fermentation.
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Yang D, Hindra, Dong LB, Crnovcic I, Shen B. Engineered production and evaluation of 6'-deoxy-tallysomycin H-1 revealing new insights into the structure-activity relationship of the anticancer drug bleomycin. J Antibiot (Tokyo) 2017; 71:ja201793. [PMID: 28831149 DOI: 10.1038/ja.2017.93] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 06/30/2017] [Accepted: 07/07/2017] [Indexed: 11/09/2022]
Abstract
The bleomycins (BLMs), a family of glycopeptide antibiotics, are currently used clinically in combination with a number of other agents for the treatment of malignant tumors. Other members of the BLM family include tallysomycins (TLMs), phleomycins and zorbamycin (ZBM). We previously cloned and characterized the biosynthetic gene clusters for BLMs, TLMs and ZBM. Applications of combinatorial biosynthesis strategies to the three biosynthetic machineries enabled the engineered production of several BLM analogs with unique structural characteristics and varying DNA cleavage activities, thereby providing an outstanding opportunity to study the structure-activity relationship (SAR) for the BLM family of anticancer drugs. We now report the engineered production of a new BLM-TLM-ZBM hybrid metabolite, named 6'-deoxy-TLM H-1, which consists of the 22-desmethyl-BLM aglycone, the TLM A C-terminal amine and the ZBM disaccharide, by heterologous expression of the zbmGL genes from the ZBM biosynthetic gene cluster in the Streptoalloteichus hindustanus ΔtlmH mutant strain SB8005. Evaluation of the DNA cleavage activities of 6'-deoxy-TLM H-1 as a measurement for its potential anticancer activity, in comparison with TLM H-1 and BLM A2, reveals new insight into the SAR of BLM family of anticancer drugs.The Journal of Antibiotics advance online publication, 23 August 2017; doi:10.1038/ja.2017.93.
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Affiliation(s)
- Dong Yang
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL, USA
| | - Hindra
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL, USA
| | - Liao-Bin Dong
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL, USA
| | - Ivana Crnovcic
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL, USA
| | - Ben Shen
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL, USA
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, FL, USA
- Natural Products Library Initiative at The Scripps Research Institute, The Scripps Research Institute, Jupiter, FL, USA
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11
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Hindra, Yang D, Teng Q, Dong LB, Crnovčić I, Huang T, Ge H, Shen B. Genome Mining of Streptomyces mobaraensis DSM40847 as a Bleomycin Producer Providing a Biotechnology Platform To Engineer Designer Bleomycin Analogues. Org Lett 2017; 19:1386-1389. [PMID: 28256838 DOI: 10.1021/acs.orglett.7b00283] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Streptomyces mobaraensis DSM40847 has been identified by genome mining and confirmed to be a new bleomycin (BLM) producer. Manipulation of BLM biosynthesis in S. mobaraensis has been demonstrated, as exemplified by the engineered production of 6'-deoxy-BLM A2, providing a biotechnology platform for BLM biosynthesis and engineering. Comparison of DNA cleavage efficiency and kinetics among 6'-deoxy-BLM A2 and selected analogues supports the wisdom of altering the disaccharide moiety to fine-tune BLM activity.
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Affiliation(s)
- Hindra
- Department of Chemistry, ‡Department of Molecular Medicine, §Natural Products Library Initiative at the Scripps Research Institute, The Scripps Research Institute , Jupiter, Florida 33458, United States
| | - Dong Yang
- Department of Chemistry, ‡Department of Molecular Medicine, §Natural Products Library Initiative at the Scripps Research Institute, The Scripps Research Institute , Jupiter, Florida 33458, United States
| | - Qihui Teng
- Department of Chemistry, ‡Department of Molecular Medicine, §Natural Products Library Initiative at the Scripps Research Institute, The Scripps Research Institute , Jupiter, Florida 33458, United States
| | - Liao-Bin Dong
- Department of Chemistry, ‡Department of Molecular Medicine, §Natural Products Library Initiative at the Scripps Research Institute, The Scripps Research Institute , Jupiter, Florida 33458, United States
| | - Ivana Crnovčić
- Department of Chemistry, ‡Department of Molecular Medicine, §Natural Products Library Initiative at the Scripps Research Institute, The Scripps Research Institute , Jupiter, Florida 33458, United States
| | - Tingting Huang
- Department of Chemistry, ‡Department of Molecular Medicine, §Natural Products Library Initiative at the Scripps Research Institute, The Scripps Research Institute , Jupiter, Florida 33458, United States
| | - Huiming Ge
- Department of Chemistry, ‡Department of Molecular Medicine, §Natural Products Library Initiative at the Scripps Research Institute, The Scripps Research Institute , Jupiter, Florida 33458, United States
| | - Ben Shen
- Department of Chemistry, ‡Department of Molecular Medicine, §Natural Products Library Initiative at the Scripps Research Institute, The Scripps Research Institute , Jupiter, Florida 33458, United States
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12
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Bleomycin analogues preferentially cleave at the transcription start sites of actively transcribed genes in human cells. Int J Biochem Cell Biol 2017; 85:56-65. [PMID: 28167289 DOI: 10.1016/j.biocel.2017.02.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 02/01/2017] [Accepted: 02/03/2017] [Indexed: 01/23/2023]
Abstract
Bleomycin (BLM) is a cancer chemotherapeutic agent that is used in the treatment of several types of tumours. The cytotoxicity of three BLM analogues, BLM Z, 6'-deoxy-BLM Z and zorbamycin (ZBM), was determined in human HeLa cells in comparison with BLM. It was found that the IC50 values were 2.9μM for 6'-deoxy-BLM Z, 3.2μM for BLM Z, 4.4μM for BLM and 7.9μM for ZBM in HeLa cells. Using next-generation Illumina DNA sequencing techniques, the genome-wide cleavage of DNA by the BLM analogues was determined in human HeLa cells and compared with BLM. It was ascertained that BLM, 6'-deoxy-BLM Z and ZBM preferentially cleaved at the transcription start sites of actively transcribed genes in human cells. The degree of preferential cleavage at the transcription start sites was quantified and an inverse correlation with the IC50 values was observed. This indicated that the degree of preferential cleavage at transcription start sites is an important component in determining the cytotoxicity of BLM analogues.
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13
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Chung LH, Murray V. The mitochondrial DNA sequence specificity of the anti-tumour drug bleomycin using end-labeled DNA and capillary electrophoresis and a comparison with genome-wide DNA sequencing. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1008:87-97. [DOI: 10.1016/j.jchromb.2015.11.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 11/17/2015] [Accepted: 11/17/2015] [Indexed: 11/30/2022]
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14
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Schroeder BR, Ghare MI, Bhattacharya C, Paul R, Yu Z, Zaleski PA, Bozeman TC, Rishel MJ, Hecht SM. The disaccharide moiety of bleomycin facilitates uptake by cancer cells. J Am Chem Soc 2014; 136:13641-56. [PMID: 25184545 PMCID: PMC4183664 DOI: 10.1021/ja507255g] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
![]()
The disaccharide moiety is responsible
for the tumor cell targeting
properties of bleomycin (BLM). While the aglycon (deglycobleomycin)
mediates DNA cleavage in much the same fashion as bleomycin, it exhibits
diminished cytotoxicity in comparison to BLM. These findings suggested
that BLM might be modular in nature, composed of tumor-seeking and
tumoricidal domains. To explore this possibility, BLM analogues were
prepared in which the disaccharide moiety was attached to deglycobleomycin
at novel positions, namely, via the threonine moiety or C-terminal
substituent. The analogues were compared with BLM and deglycoBLM for
DNA cleavage, cancer cell uptake, and cytotoxic activity. BLM is more
potent than deglycoBLM in supercoiled plasmid DNA relaxation, while
the analogue having the disaccharide on threonine was less active
than deglycoBLM and the analogue containing the C-terminal disaccharide
was slightly more potent. While having unexceptional DNA cleavage
potencies, both glycosylated analogues were more cytotoxic to cultured
DU145 prostate cancer cells than deglycoBLM. Dye-labeled conjugates
of the cytotoxic BLM aglycons were used in imaging experiments to
determine the extent of cell uptake. The rank order of internalization
efficiencies was the same as their order of cytotoxicities toward
DU145 cells. These findings establish a role for the BLM disaccharide
in tumor targeting/uptake and suggest that the disaccharide moiety
may be capable of delivering other cytotoxins to cancer cells. While
the mechanism responsible for uptake of the BLM disaccharide selectively
by tumor cells has not yet been established, data are presented which
suggest that the metabolic shift to glycolysis in cancer cells may
provide the vehicle for selective internalization.
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Affiliation(s)
- Benjamin R Schroeder
- Department of Chemistry, University of Virginia , Charlottesville, Virginia 22904, United States
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15
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Godin F, Duplessis M, Buonomano C, Trinh T, Houde K, Chapdelaine D, Rodrigue J, Boutros A, Guindon Y. Stereocontrolled synthesis of propionate motifs froml-lactic andl-alanine aldehydes. A DFT study of the hydrogen transfer under endocyclic control. Org Chem Front 2014. [DOI: 10.1039/c4qo00142g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Segerman ZJ, Roy B, Hecht SM. Characterization of bleomycin-mediated cleavage of a hairpin DNA library. Biochemistry 2013; 52:5315-27. [PMID: 23834496 DOI: 10.1021/bi400779r] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A study of BLM A5 was conducted using a previously isolated library of hairpin DNAs found to bind strongly to metal-free BLM. The ability of Fe(II)·BLM to affect cleavage on both the 3' and 5' arms of the hairpin DNAs was characterized. The strongly bound DNAs were found to be efficient substrates for Fe·BLM A5-mediated hairpin DNA cleavage. Surprisingly, the most prevalent site of BLM-mediated cleavage was found to be the 5'-AT-3' dinucleotide sequence. This dinucleotide sequence and other sequences generally not cleaved well by BLM when examined using arbitrarily chosen DNA substrates were apparent when examining the library of 10 hairpin DNAs. In total, 132 sites of DNA cleavage were produced by exposure of the hairpin DNA library to Fe·BLM A5. The existence of multiple sites of cleavage on both the 3' and 5' arms of the hairpin DNAs suggested that some of these might be double-strand cleavage events. Accordingly, an assay was developed to test the propensity of the hairpin DNAs to undergo double-strand DNA damage. One hairpin DNA was characterized using this method and gave results consistent with earlier reports of double-strand DNA cleavage but with a sequence selectivity that was different from those reported previously.
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Affiliation(s)
- Zachary J Segerman
- Center for BioEnergetics, Biodesign Institute and Department of Chemistry and Biochemistry, Arizona State University , Tempe, Arizona 85287, United States
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17
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Hänchen A, Rausch S, Landmann B, Toti L, Nusser A, Süssmuth RD. Alanine scan of the peptide antibiotic feglymycin: assessment of amino acid side chains contributing to antimicrobial activity. Chembiochem 2013; 14:625-32. [PMID: 23447362 DOI: 10.1002/cbic.201300032] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Indexed: 01/08/2023]
Abstract
The antibiotic feglymycin is a linear 13-mer peptide synthesized by the bacterium Streptomyces sp. DSM 11171. It mainly consists of the nonproteinogenic amino acids 4-hydroxyphenylglycine and 3,5-dihydroxyphenylglycine. An alanine scan of feglymycin was performed by solution-phase peptide synthesis in order to assess the significance of individual amino acid side chains for biological activity. Hence, 13 peptides were synthesized from di- and tripeptide building blocks, and subsequently tested for antibacterial activity against Staphylococcus aureus strains. Furthermore we tested the inhibition of peptidoglycan biosynthesis enzymes MurA and MurC, which are inhibited by feglymycin. Whereas the antibacterial activity is significantly based on the three amino acids D-Hpg1, L-Hpg5, and L-Phe12, the inhibitory activity against MurA and MurC depends mainly on L-Asp13. The difference in the position dependence for antibacterial activity and enzyme inhibition suggests multiple molecular targets in the modes of action of feglymycin.
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Affiliation(s)
- Anne Hänchen
- Technische Universität Berlin, Fakultät II, Institut für Chemie, Strasse des 17. Juni 124, 10623 Berlin, Germany
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18
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Huang SX, Feng Z, Wang L, Galm U, Wendt-Pienkowski E, Yang D, Tao M, Coughlin JM, Duan Y, Shen B. A designer bleomycin with significantly improved DNA cleavage activity. J Am Chem Soc 2012; 134:13501-9. [PMID: 22831455 DOI: 10.1021/ja3056535] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The bleomycins (BLMs) are used clinically in combination with a number of other agents for the treatment of several types of tumors, and the BLM, etoposide, and cisplatin treatment regimen cures 90-95% of metastatic testicular cancer patients. BLM-induced pneumonitis is the most feared, dose-limiting side effect of BLM in chemotherapy, which can progress into lung fibrosis and affect up to 46% of the total patient population. There have been continued efforts to develop new BLM analogues in the search for anticancer drugs with better clinical efficacy and lower lung toxicity. We have previously cloned and characterized the biosynthetic gene clusters for BLMs from Streptomyces verticillus ATCC15003, tallysomycins from Streptoalloteichus hindustanus E465-94 ATCC31158, and zorbamycin (ZBM) from Streptomyces flavoviridis SB9001. Comparative analysis of the three biosynthetic machineries provided the molecular basis for the formulation of hypotheses to engineer novel analogues. We now report engineered production of three new analogues, 6'-hydroxy-ZBM, BLM Z, and 6'-deoxy-BLM Z and the evaluation of their DNA cleavage activities as a measurement for their potential anticancer activity. Our findings unveiled: (i) the disaccharide moiety plays an important role in the DNA cleavage activity of BLMs and ZBMs, (ii) the ZBM disaccharide significantly enhances the potency of BLM, and (iii) 6'-deoxy-BLM Z represents the most potent BLM analogue known to date. The fact that 6'-deoxy-BLM Z can be produced in reasonable quantities by microbial fermentation should greatly facilitate follow-up mechanistic and preclinical studies to potentially advance this analogue into a clinical drug.
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Affiliation(s)
- Sheng-Xiong Huang
- Department of Chemistry, The Scripps Research Institute, Jupiter, Florida 33458, USA
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Zaleski PA, Maini R, Leiris SJ, Elban MA, Hecht SM. Synthesis and biological activities of topopyrones. JOURNAL OF NATURAL PRODUCTS 2012; 75:577-585. [PMID: 22462811 DOI: 10.1021/np200777z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Structure-activity studies were employed to investigate the stabilization of DNA-topoisomerases I and II covalent binary complexes by topopyrone analogues. The synthesis of five new topopyrone derivatives and study of their ability to stabilize DNA-topoisomerase I and DNA-topoisomerase II covalent binary complexes are described. The biochemical assays suggest that the orientation of the fused 1,4-pyrone ring and halogen substituents contribute importantly to the overall potency of the topopyrones as topoisomerase poisons.
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Affiliation(s)
- Paul A Zaleski
- Center for BioEnergetics, Biodesign Institute, Arizona State University, Tempe, Arizona 85287-6301, USA
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20
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Nam SJ, Kauffman CA, Jensen PR, Fenical W. Isolation and Characterization of Actinoramides A-C, Highly Modified Peptides from a Marine Streptomyces sp. Tetrahedron 2011; 67:6707-6712. [PMID: 21857753 PMCID: PMC3156444 DOI: 10.1016/j.tet.2011.04.051] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Reported herein is the isolation and structure elucidation of three highly modified peptides, actinoramides A-C (1-3), which are produced by a marine bacterium closely related to the genus Streptomyces. The planar structures of the actinoramides, which are composed of the unusual amino acids 2-amino-4-ureidobutanoic acid and 4-amino-3-hydroxy-2-methyl-5-phenylpentanoic acid, were assigned by chemical transformations and by interpretation of spectroscopic data, while the absolute configuration of these new peptides were defined by application of the advanced Marfey's and Mosher's methods.
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Affiliation(s)
- Sang-Jip Nam
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California at San Diego, La Jolla, CA 92093-0204, U.S.A
| | - Christopher A. Kauffman
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California at San Diego, La Jolla, CA 92093-0204, U.S.A
| | - Paul R. Jensen
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California at San Diego, La Jolla, CA 92093-0204, U.S.A
| | - William Fenical
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California at San Diego, La Jolla, CA 92093-0204, U.S.A
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21
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Williams DE, Dalisay DS, Patrick BO, Matainaho T, Andrusiak K, Deshpande R, Myers CL, Piotrowski JS, Boone C, Yoshida M, Andersen RJ. Padanamides A and B, highly modified linear tetrapeptides produced in culture by a Streptomyces sp. isolated from a marine sediment. Org Lett 2011; 13:3936-9. [PMID: 21749075 DOI: 10.1021/ol2014494] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Two highly modified linear tetrapeptides, padanamides A (1) and B (2), are produced by laboratory cultures of a Streptomyces sp. obtained from a marine sediment. Padanamide B is cytotoxic to Jurkat cells, and a chemical genomics analysis using Saccharomyces cerevisiae deletion mutants suggested that padanamide A inhibits cysteine and methionine biosynthesis or that these amino acids are involved in the yeast's response to the peptide.
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Affiliation(s)
- David E Williams
- Department of Chemistry, University of British Columbia, Vancouver, BC, Canada, V6T 1Z1
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Cai X, Zaleski PA, Cagir A, Hecht SM. Deglycobleomycin A6 analogues modified in the methylvalerate moiety. Bioorg Med Chem 2011; 19:3831-44. [DOI: 10.1016/j.bmc.2011.04.047] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2011] [Revised: 04/22/2011] [Accepted: 04/25/2011] [Indexed: 10/18/2022]
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Shibue T, Hirai T, Okamoto I, Morita N, Masu H, Azumaya I, Tamura O. Total syntheses of tubulysins. Chemistry 2010; 16:11678-88. [PMID: 20734394 DOI: 10.1002/chem.201000963] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2010] [Indexed: 11/07/2022]
Abstract
The total syntheses of tetrapeptides tubulysins D (1 b), U (1 c), and V (1 d), which are potent tubulin polymerization inhibitors, are described. The synthesis of Tuv (2), an unusual amino acid constituent of tubulysins, includes an 1,3-dipolar cycloaddition reaction of chiral nitrone D-6 derived from D-gulose with N-acryloyl camphor sultam (-)-9 employing the double asymmetric induction, whereas the synthesis of Tup (20), another unusual amino acid, involves a stereoselective Evans aldol reaction of (Z)-boron enolate generated from (S)-4-isopropyl-3-propionyl-2-oxazolidinone with N-protected phenylalaninal and a subsequent Barton deoxygenation protocol. We accomplished the total syntheses of tubulysins U (1 c) and V (1 d) by using these methodologies, in which the isoxazolidine ring was used as the effective protective group for γ-amido alcohol functionality. Furthermore, to understand the structure-activity relationship of tubulysins, we synthesized tubulysin D (1 b) and cyclo-tubulysin D (1 e) from 2-Me and 20, and ent-tubulysin D (ent-1 d) from ent-2-Me and ent-20, respectively. The preliminary results regarding their biological activities are also reported.
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Affiliation(s)
- Taku Shibue
- Exploratory Research Laboratories, Kyorin Pharmaceutical Co. Ltd, 2399-1, Nogi, Nogi-Machi, Shimotsuga-Gun, Tochigi 329-0114, Japan
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24
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Pitié M, Pratviel G. Activation of DNA Carbon−Hydrogen Bonds by Metal Complexes. Chem Rev 2010; 110:1018-59. [DOI: 10.1021/cr900247m] [Citation(s) in RCA: 138] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Marguerite Pitié
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, F-31077 Toulouse, France, and Université de Toulouse, Toulouse, France
| | - Geneviève Pratviel
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, F-31077 Toulouse, France, and Université de Toulouse, Toulouse, France
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25
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Improved production of the tallysomycin H-1 in Streptoalloteichus hindustanus SB8005 strain by fermentation optimization. Appl Microbiol Biotechnol 2010; 86:1345-53. [DOI: 10.1007/s00253-009-2406-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2009] [Revised: 11/24/2009] [Accepted: 12/11/2009] [Indexed: 10/20/2022]
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26
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Tao M, Wang L, Wendt-Pienkowski E, Zhang N, Yang D, Galm U, Coughlin JM, Xu Z, Shen B. Functional characterization of tlmH in Streptoalloteichus hindustanus E465-94 ATCC 31158 unveiling new insight into tallysomycin biosynthesis and affording a novel bleomycin analog. MOLECULAR BIOSYSTEMS 2009; 6:349-56. [PMID: 20094654 DOI: 10.1039/b918106g] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tallysomycins (TLMs) belong to the bleomycin (BLM) family of anticancer antibiotics and differ from the BLMs principally by the presence of a 4-amino-4,6-dideoxy-L-talose attached to C-41 of the TLM backbone as part of a glycosylcarbinolamide. To facilitate an understanding of the differences in anticancer activities observed between TLMs and BLMs, we thought to generate des-talose TLM analogs by engineering TLM biosynthesis in Streptoalloteichus hindustanus E465-94 ATCC 31158. Here we report (i) the engineering of the DeltatlmH mutant SB8005 strain that produces the two TLM analogs, TLM H-1 and TLM H-2, (ii) production, isolation, and structural elucidation of TLM H-1 and TLM H-2 by NMR and mass spectroscopic analyses as the desired des-talose TLM analogs, and (iii) comparison of the DNA cleavage activities of TLM H-1 with selected TLMs and BLMs. These findings support the previous functional assignment of tlmH to encode an alpha-ketoglutarate-dependent hydroxylase and unveil the TlmH-catalyzed hydroxylation at both C-41 and C-42 and the TlmK-catalyzed glycosylation of a labile carbinolamide intermediate as the final two steps for TLM biosynthesis. TlmH is apparently distinct from other enzymes known to catalyze carbinolamide formation. The availability of TLM H-1 now sets the stage to study the TlmH enzymology in vitro and to elucidate the exact contribution of the l-talose to the anticancer activities of TLMs in vivo.
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Affiliation(s)
- Meifeng Tao
- Division of Pharmaceutical Sciences, University of Wisconsin-Madison, Madison, WI 53705-2222, USA
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27
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Stereoselective synthesis of tubuvaline methyl ester and tubuphenylalanine, components of tubulysins, tubulin polymerization inhibitors. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.04.046] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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28
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Wang L, Tao M, Wendt-Pienkoski E, Galm U, Coughlin JM, Shen B. Functional characterization of tlmK unveiling unstable carbinolamide intermediates in the tallysomycin biosynthetic pathway. J Biol Chem 2009; 284:8256-64. [PMID: 19189972 PMCID: PMC2659183 DOI: 10.1074/jbc.m900640200] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2009] [Indexed: 11/06/2022] Open
Abstract
Tallysomycins (TLMs) belong to the bleomycin family of anticancer antibiotics. TLMs differ from bleomycins primarily by the presence of a 4-amino-4,6-dideoxy-l-talose sugar attached to C-41 as part of a glycosylcarbinolamide. We previously proposed, on the basis of bioinformatics analysis of the tlm biosynthetic gene cluster from Streptoalloteichus hindustanus E465-94 ATCC 31158, that the tlmK gene is responsible for the attachment of this sugar moiety. We now report that inactivation of tlmK in S. hindustanus abolished TLM A and TLM B production, the resultant DeltatlmK mutant instead accumulated five new metabolites, and introduction of a functional copy of tlmK to the DeltatlmK mutant restored TLM A and TLM B production. Two major metabolites, TLM K-1 and TLM K-2, together with three minor metabolites, TLM K-3, TLM K-4, and TLM K-5, were isolated from the DeltatlmK mutant, and their structures were elucidated. These findings provide experimental evidence supporting the previous functional assignment of tlmK to encode a glycosyltransferase and unveil two carbinolamide pseudoaglycones as key intermediates in the TLM biosynthetic pathway. TlmK stabilizes the carbinolamide intermediates by glycosylating their hemiaminal hydroxyl groups, thereby protecting them from hydrolysis during TLM biosynthesis. In the absence of TlmK, the carbinolamide intermediates fragment to produce an amide TLM K-1 and aldehyde intermediates, which undergo further oxidative fragmentation to afford carboxylic acids TLM K-2, TLM K-3, TLM K-4, and TLM K-5.
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Affiliation(s)
- Liyan Wang
- Division of Pharmaceutical Sciences, Department of Chemistry, and University of Wisconsin National Cooperative Drug Discovery Group, University of Wisconsin, Madison, Wisconsin 53705-2222, USA
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29
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Nandy JP, Prakesch M, Khadem S, Reddy PT, Sharma U, Arya P. Advances in Solution- and Solid-Phase Synthesis toward the Generation of Natural Product-like Libraries. Chem Rev 2009; 109:1999-2060. [DOI: 10.1021/cr800188v] [Citation(s) in RCA: 151] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Jyoti P. Nandy
- Ontario Institute for Cancer Research, MaRS Centre, South Tower, 101 College Street, Toronto, Ontario M5G 1L7, Canada, Steacie Institute for Molecular Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada, and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Michael Prakesch
- Ontario Institute for Cancer Research, MaRS Centre, South Tower, 101 College Street, Toronto, Ontario M5G 1L7, Canada, Steacie Institute for Molecular Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada, and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Shahriar Khadem
- Ontario Institute for Cancer Research, MaRS Centre, South Tower, 101 College Street, Toronto, Ontario M5G 1L7, Canada, Steacie Institute for Molecular Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada, and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - P. Thirupathi Reddy
- Ontario Institute for Cancer Research, MaRS Centre, South Tower, 101 College Street, Toronto, Ontario M5G 1L7, Canada, Steacie Institute for Molecular Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada, and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Utpal Sharma
- Ontario Institute for Cancer Research, MaRS Centre, South Tower, 101 College Street, Toronto, Ontario M5G 1L7, Canada, Steacie Institute for Molecular Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada, and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Prabhat Arya
- Ontario Institute for Cancer Research, MaRS Centre, South Tower, 101 College Street, Toronto, Ontario M5G 1L7, Canada, Steacie Institute for Molecular Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada, and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
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Akiyama Y, Ma Q, Edgar E, Laikhter A, Hecht SM. A Novel DNA Hairpin Substrate for Bleomycin. Org Lett 2008; 10:2127-30. [DOI: 10.1021/ol800445x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yoshitsugu Akiyama
- Departments of Chemistry and Biology, University of Virginia, Charlottesville, Virginia 22904, and Integrated DNA Technologies, 1710 Commercial Park, Coralville, Iowa 52241
| | - Qian Ma
- Departments of Chemistry and Biology, University of Virginia, Charlottesville, Virginia 22904, and Integrated DNA Technologies, 1710 Commercial Park, Coralville, Iowa 52241
| | - Erin Edgar
- Departments of Chemistry and Biology, University of Virginia, Charlottesville, Virginia 22904, and Integrated DNA Technologies, 1710 Commercial Park, Coralville, Iowa 52241
| | - Andrei Laikhter
- Departments of Chemistry and Biology, University of Virginia, Charlottesville, Virginia 22904, and Integrated DNA Technologies, 1710 Commercial Park, Coralville, Iowa 52241
| | - Sidney M. Hecht
- Departments of Chemistry and Biology, University of Virginia, Charlottesville, Virginia 22904, and Integrated DNA Technologies, 1710 Commercial Park, Coralville, Iowa 52241
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31
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Ma Q, Xu Z, Schroeder BR, Sun W, Wei F, Hashimoto S, Konishi K, Leitheiser CJ, Hecht SM. Biochemical evaluation of a 108-member deglycobleomycin library: viability of a selection strategy for identifying bleomycin analogues with altered properties. J Am Chem Soc 2007; 129:12439-52. [PMID: 17887752 DOI: 10.1021/ja0722729] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The bleomycins (BLMs) are clinically used glycopeptide antitumor antibiotics that have been shown to mediate the sequence-selective oxidative damage of both DNA and RNA. Previously, we described the solid-phase synthesis of a library of 108 unique analogues of deglycoBLM A6, a congener that cleaves DNA analogously to BLM itself. Each member of the library was assayed for its ability to effect single- and double-strand nicking of duplex DNA, sequence-selective DNA cleavage, and RNA cleavage in the presence and absence of a metal ion cofactor. All of the analogues tested were found to mediate concentration-dependent plasmid DNA relaxation to some extent, and a number exhibited double-strand cleavage with an efficiency comparable to or greater than deglycoBLM A6. Further, some analogues having altered linker and metal-binding domains mediated altered sequence-selective cleavage, and a few were found to cleave a tRNA3Lys transcript both in the presence and in the absence of a metal cofactor. The results provide insights into structural elements within BLM that control DNA and RNA cleavage. The present study also permits inferences to be drawn regarding the practicality of a selection strategy for the solid-phase construction and evaluation of large libraries of BLM analogues having altered properties.
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Affiliation(s)
- Qian Ma
- Departments of Chemistry and Biology, University of Virginia, Charlottesville, Virginia 22904, USA
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Wang L, Yun BS, George NP, Wendt-Pienkowski E, Galm U, Oh TJ, Coughlin JM, Zhang G, Tao M, Shen B. Glycopeptide antitumor antibiotic zorbamycin from Streptomyces flavoviridis ATCC 21892: strain improvement and structure elucidation. JOURNAL OF NATURAL PRODUCTS 2007; 70:402-6. [PMID: 17311457 PMCID: PMC2579990 DOI: 10.1021/np060592k] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Zorbamycin (1, ZBM) is a glycopeptide antitumor antibiotic first reported in 1971. The partial structures of 1 were speculated on the basis of its acid hydrolysis products, but the structure of the intact molecule has never been established. The low titer of 1 from the wild-type strain, combined with its acid-instability, has so far hampered its isolation. By random mutagenesis of Streptomyces flavoviridis ATCC21892, a wild-type producer of 1, with UV irradiation, two high-producing strains of 1, S. flavoviridis SB9000 and SB9001, were isolated. Under the optimized fermentation conditions, these two strains produced about 10 mg/L of 1, which was about 10-fold higher than the wild-type ATCC21892 strain, as estimated by HPLC analysis. Finally, 1 was isolated as both a 1-Cu complex and Cu-free molecule, and the intact structure of 1 was established on the basis of a combination of mass spectrometry and 1H and 13C NMR spectroscopic analyses.
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Affiliation(s)
- Liyan Wang
- Division of Pharmaceutical Sciences, University of Wisconsin-Madison, Madison, WI 53705
| | - Bong-Sik Yun
- Division of Pharmaceutical Sciences, University of Wisconsin-Madison, Madison, WI 53705
| | - Nicholas P. George
- Microbiology Doctoral Training Program, University of Wisconsin-Madison, Madison, WI 53705
| | | | - Ute Galm
- Division of Pharmaceutical Sciences, University of Wisconsin-Madison, Madison, WI 53705
| | - Tae-Jin Oh
- Division of Pharmaceutical Sciences, University of Wisconsin-Madison, Madison, WI 53705
| | - Jane M. Coughlin
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53705
| | - Guodong Zhang
- Division of Pharmaceutical Sciences, University of Wisconsin-Madison, Madison, WI 53705
| | - Meifeng Tao
- Division of Pharmaceutical Sciences, University of Wisconsin-Madison, Madison, WI 53705
| | - Ben Shen
- Division of Pharmaceutical Sciences, University of Wisconsin-Madison, Madison, WI 53705
- Microbiology Doctoral Training Program, University of Wisconsin-Madison, Madison, WI 53705
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53705
- University of Wisconsin National Cooperative Drug Discovery Group, University of Wisconsin-Madison, Madison, WI 53705
- To whom correspondence should be addressed: Tel: (608) 263-2673. Fax: (608) 262-5345. E-mail:
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Tao ZF, Konishi K, Keith G, Hecht SM. An Efficient Mammalian Transfer RNA Target for Bleomycin. J Am Chem Soc 2006; 128:14806-7. [PMID: 17105281 DOI: 10.1021/ja066187x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The antitumor antibiotic bleomycin has long been believed to exert its therapeutic effects at the level of DNA cleavage. Recently, evidence has been presented to suggest that RNA cleavage may also be important and that one or more transfer RNAs may be involved. To define those tRNAs that may represent important loci for the action of bleomycin, we have fractionated chicken liver tRNAs and identified those isoacceptors most susceptible to oxidative cleavage by Fe(II).BLM. Two chicken liver tRNAs, tRNA3Lys and tRNAPhe, were found to be cleaved with exceptional facility by Fe(II).BLM, and both were cleaved predominantly at U66. The cleavage of tRNA3Lys was shown to be minimally affected by physiological concentrations of Mg2+. Chicken liver tRNA3Lys is identical in sequence with human tRNA3Lys. These findings support a possible role for a critical tRNA such as tRNA3Lys in the mechanism by which bleomycin mediates its antitumor activity.
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Affiliation(s)
- Zhi-Fu Tao
- Departments of Chemistry and Biology, University of Virginia, Charlottesville, VA 22904, USA
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35
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Abstract
Bleomycins are a family of glycopeptide antibiotics that have potent antitumour activity against a range of lymphomas, head and neck cancers and germ-cell tumours. The therapeutic efficacy of the bleomycins is limited by development of lung fibrosis. The cytotoxic and mutagenic effects of the bleomycins are thought to be related to their ability to mediate both single-stranded and double-stranded DNA damage, which requires the presence of specific cofactors (a transition metal, oxygen and a one-electron reductant). Progress in understanding the mechanisms involved in the therapeutic efficacy of the bleomycins and the unwanted toxicity and elucidation of the biosynthetic pathway of the bleomycins sets the stage for developing a more potent, less toxic therapeutic agent.
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Affiliation(s)
- Jingyang Chen
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
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Abstract
Novel and structurally diverse natural products containing imidazol-, oxazole-, or thiazole-unit(s) display a wide variety of biological activities. The isolation, biological activity and total synthesis of naturally occurring muscarine, imidazole, oxazole and thiazole alkaloids have been reviewed. The literature covers from January 2003 to June 2004.
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Affiliation(s)
- Zhong Jin
- Institute and State Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin, 300071, PR China.
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Chapter 5.5 Five-membered ring systems: With N and S (Se) atoms. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/s0959-6380(05)80051-0] [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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Affiliation(s)
- Roland E Dolle
- Department of Chemistry, Adolor Corporation, 700 Pennsylvania Drive, Exton, Pennsylvania 19341, USA.
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Rishel MJ, Thomas CJ, Tao ZF, Vialas C, Leitheiser CJ, Hecht SM. Conformationally constrained analogues of bleomycin A5. J Am Chem Soc 2003; 125:10194-205. [PMID: 12926941 DOI: 10.1021/ja030057w] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The bleomycin (BLM) group antitumor antibiotics are glycopeptide-derived natural products shown to cause sequence selective lesions in DNA. Prior studies have indicated that the linker region, composed of the methylvalerate and threonine residues, may be responsible for a conformational bend in the agent required for efficient DNA cleavage. We have synthesized a number of conformationally constrained methylvalerate analogues and incorporated them into deglycobleomycin A(5) congeners using our recently reported procedure for the solid phase construction of (deglyco)bleomycin and its analogues. These analogues were designed to probe the effects of conformational constraint of the native valerate moiety. Initial experiments indicated that the constrained molecules, none of which mimic the conformation proposed for the natural valerate linker, possessed DNA cleavage activity, albeit with potencies less than that of (deglyco)BLM and lacking sequence selectivity. Further experiments demonstrated that these analogues failed to produce alkali-labile lesions in DNA or sequence selective oxidative damage in RNA. However, two of the conformationally constrained deglycoBLM analogues were shown to mediate RNA cleavage in the absence of added Fe(2+). The ability of the analogues to mediate the oxygenation of small molecules was also assayed, and it was shown that they were as competent in the transfer of oxygen to low molecular weight substrates as the parent compound.
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Affiliation(s)
- Michael J Rishel
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, USA
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