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Wang Z, Kasper A, Takahashi M, Amador AM, Bhattacharjee A, Kan J, Hernandez Y, Ternei M, Brady SF. Tapcin, an In Vivo Active Dual Topoisomerase I/II Inhibitor Discovered by Synthetic Bioinformatic Natural Product (Syn-BNP)-Coupled Metagenomics. Angew Chem Int Ed Engl 2024; 63:e202317187. [PMID: 38231130 PMCID: PMC11018531 DOI: 10.1002/anie.202317187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 01/10/2024] [Accepted: 01/16/2024] [Indexed: 01/18/2024]
Abstract
DNA topoisomerases are attractive targets for anticancer agents. Dual topoisomerase I/II inhibitors are particularly appealing due to their reduced rates of resistance. A number of therapeutically relevant topoisomerase inhibitors are bacterial natural products. Mining the untapped chemical diversity encoded by soil microbiomes presents an opportunity to identify additional natural topoisomerase inhibitors. Here we couple metagenome mining, bioinformatic structure prediction algorithms, and chemical synthesis to produce the dual topoisomerase inhibitor tapcin. Tapcin is a mixed p-aminobenzoic acid (PABA)-thiazole with a rare tri-thiazole substructure and picomolar antiproliferative activity. Tapcin reduced colorectal adenocarcinoma HT-29 cell proliferation and tumor volume in mouse hollow fiber and xenograft models, respectively. In both studies it showed similar activity to the clinically used topoisomerase I inhibitor irinotecan. The study suggests that the interrogation of soil microbiomes using synthetic bioinformatic natural product methods has the potential to be a rewarding strategy for identifying potent, biomedically relevant, antiproliferative agents.
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Affiliation(s)
- Zongqiang Wang
- Laboratory of Genetically Encoded Small Molecules, The Rockefeller University, 1230 York Avenue, New York, NY 10065
| | - Amanda Kasper
- Laboratory of Genetically Encoded Small Molecules, The Rockefeller University, 1230 York Avenue, New York, NY 10065
| | - Mai Takahashi
- Laboratory of Systems Cancer Biology, The Rockefeller University, 1230 York Avenue, New York, NY 10065
| | - Adrian Morales Amador
- Laboratory of Genetically Encoded Small Molecules, The Rockefeller University, 1230 York Avenue, New York, NY 10065
| | - Abir Bhattacharjee
- Laboratory of Genetically Encoded Small Molecules, The Rockefeller University, 1230 York Avenue, New York, NY 10065
| | - Jingbo Kan
- Laboratory of Genetically Encoded Small Molecules, The Rockefeller University, 1230 York Avenue, New York, NY 10065
| | - Yozen Hernandez
- Laboratory of Genetically Encoded Small Molecules, The Rockefeller University, 1230 York Avenue, New York, NY 10065
| | - Melinda Ternei
- Laboratory of Genetically Encoded Small Molecules, The Rockefeller University, 1230 York Avenue, New York, NY 10065
| | - Sean F. Brady
- Laboratory of Genetically Encoded Small Molecules, The Rockefeller University, 1230 York Avenue, New York, NY 10065
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Wu C, Tang J, Limlingan Malit JJ, Wang R, Sung HHY, Williams ID, Qian PY. Bathiapeptides: Polythiazole-Containing Peptides from a Marine Biofilm-Derived Bacillus sp. JOURNAL OF NATURAL PRODUCTS 2022; 85:1751-1762. [PMID: 35703501 DOI: 10.1021/acs.jnatprod.2c00290] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Bacteria in marine biofilms are a rich reservoir of natural products. To facilitate novel secondary metabolite discovery, we investigated the metabolic profile of a marine biofilm-derived Bacillus sp. B19-2 by combining bioinformatics and LC-UV-MS analyses. After dereplication and purification of putatively unknown compounds, a new family of compounds 1-8 was uncovered and named bathiapeptides. Structural elucidation using NMR, HRESIMS, ozonolysis, advanced Marfey's analysis, and X-ray diffraction revealed that bathiapeptides are polypeptides that contain a rare polythiazole moiety. These compounds exhibited strong cytotoxicity against Hep G2, HeLa, MCF-7, and MGC-803 cell lines, and the lowest IC50 value was 0.5 μM. An iterative biosynthesis logic in bathiapeptides' biosynthesis was proposed based on the identified chemical structures and putative gene cluster analysis.
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Affiliation(s)
- Chuanhai Wu
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, Guangdong, 511458 People's Republic of China
- Department of Ocean Science, The Hong Kong University of Science and Technology, Hong Kong, People's Republic of China
| | - Jianwei Tang
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, Guangdong, 511458 People's Republic of China
- Department of Ocean Science, The Hong Kong University of Science and Technology, Hong Kong, People's Republic of China
| | - Jessie James Limlingan Malit
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, Guangdong, 511458 People's Republic of China
- Department of Ocean Science, The Hong Kong University of Science and Technology, Hong Kong, People's Republic of China
| | - Ruojun Wang
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, Guangdong, 511458 People's Republic of China
- Department of Ocean Science, The Hong Kong University of Science and Technology, Hong Kong, People's Republic of China
| | - Herman H-Y Sung
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, Guangdong, 511458 People's Republic of China
- Department of Chemistry, The Hong Kong University of Science and Technology, Hong Kong, People's Republic of China
| | - Ian D Williams
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, Guangdong, 511458 People's Republic of China
- Department of Chemistry, The Hong Kong University of Science and Technology, Hong Kong, People's Republic of China
| | - Pei-Yuan Qian
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, Guangdong, 511458 People's Republic of China
- Department of Ocean Science, The Hong Kong University of Science and Technology, Hong Kong, People's Republic of China
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Wang C, Han C, Yang J, Zhang Z, Zhao Y, Zhao J. Ynamide-Mediated Thioamide and Primary Thioamide Syntheses. J Org Chem 2022; 87:5617-5629. [PMID: 35394769 DOI: 10.1021/acs.joc.1c03076] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Environmentally friendly ynamide-mediated thioamidation of monothiocarboxylic acids with amines or ammonium hydroxide for the syntheses of thioamides and primary thioamides is described. Simple and mild reaction conditions enable the reaction to tolerate a wide variety of functional groups such as hydroxyl group, ester, tertiary amine, ketone, and amide moieties. Readily available NaSH served as the sulfur source, avoiding the use of toxic, expensive, and malodorous organic sulfur reagents and making this strategy environmentally friendly and practical. Importantly, the stereochemical integrity of α-chiral monothiocarboxylic acids was maintained during the activation step and subsequent aminolysis process, thus offering a racemization-free strategy for peptide C-terminal modification. Furthermore, a number of thioamide-modified drugs were prepared in good yields by using this protocol and the synthesized primary thioamides were transformed into backbone thiazolyl modified peptides.
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Affiliation(s)
- Changliu Wang
- College of Chemistry and Chemical Engineering & National Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, Jiangxi, P. R. China
| | - Chunyu Han
- Key Laboratory of Molecular Target & Clinical Pharmacology and the NMPA & State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, Guangdong, P. R. China
| | - Jinhua Yang
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, P. R. China
| | - Zhenjia Zhang
- National Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, Jiangxi, P. R. China
| | - Yongli Zhao
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, Jiangxi, P. R. China
| | - Junfeng Zhao
- College of Chemistry and Chemical Engineering & National Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, Jiangxi, P. R. China.,Key Laboratory of Molecular Target & Clinical Pharmacology and the NMPA & State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, Guangdong, P. R. China
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Shen Q, Zhou H, Dai G, Zhong G, Huo L, Li A, Liu Y, Yang M, Ravichandran V, Zheng Z, Tang YJ, Jiao N, Zhang Y, Bian X. Characterization of a Cryptic NRPS Gene Cluster in Bacillus velezensis FZB42 Reveals a Discrete Oxidase Involved in Multithiazole Biosynthesis. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05131] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Qiyao Shen
- Helmholtz International Lab for Anti-infectives, Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
- Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China
| | - Haibo Zhou
- Helmholtz International Lab for Anti-infectives, Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
| | - Guangzhi Dai
- Helmholtz International Lab for Anti-infectives, Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
| | - Guannan Zhong
- Helmholtz International Lab for Anti-infectives, Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
| | - Liujie Huo
- Helmholtz International Lab for Anti-infectives, Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
| | - Aiying Li
- Helmholtz International Lab for Anti-infectives, Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
| | - Yang Liu
- Helmholtz International Lab for Anti-infectives, Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
| | - Ming Yang
- Helmholtz International Lab for Anti-infectives, Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
| | - Vinothkannan Ravichandran
- Helmholtz International Lab for Anti-infectives, Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
| | - Zhihui Zheng
- New Drug Research and Development Center, North China Pharmaceutical Group Corporation, Shijiazhuang 050015, China
| | - Ya-Jie Tang
- Helmholtz International Lab for Anti-infectives, Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
| | - Nianzhi Jiao
- Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China
| | - Youming Zhang
- Helmholtz International Lab for Anti-infectives, Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
| | - Xiaoying Bian
- Helmholtz International Lab for Anti-infectives, Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
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Abstract
Cancer is known as one of the main causes of death in the world; and many compounds have been synthesized to date with potential use in cancer therapy. Thiazole is a versatile heterocycle, found in the structure of many drugs in use as well as anticancer agents. This review provides an overview of recent advances in thiazole-bearing compounds as anticancer agents with particular emphasis on their mechanism of action in cancerous cells. Chemical designs, structure–activity relationships and relevant preclinical properties have been comprehensively described.
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Manfrin A, Borduas-Dedekind N, Lau K, McNeill K. Singlet Oxygen Photooxidation of Peptidic Oxazoles and Thiazoles. J Org Chem 2019; 84:2439-2447. [PMID: 30681338 DOI: 10.1021/acs.joc.8b02684] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Oxazoles and thiazoles are commonly found moieties in nonribosomal peptides (NRPs) and ribosomally synthesized post-translationally modified peptides (RiPPs), which are important biomolecules present in the environment and in natural waters. From previous studies, they seem susceptible to oxidation by singlet oxygen (1O2); therefore, we designed and synthesized model oxazole- and thiazole-peptides and measured their 1O2 bimolecular reaction rate constants, showing slow photooxidation under environmental conditions. We reasoned their stability through the electron-withdrawing effect of the carboxamide substituent. Reaction products were elucidated and support a reaction mechanism involving cycloaddition followed by a series of rearrangements. The first 1O2 bimolecular reaction rate constant for a RiPP, the thiazole-containing peptide Aerucyclamide A, was measured and found in good agreement with the model peptide's rate constant, highlighting the potential of using model peptides to study the transformations of other environmentally relevant NRPs and RiPPs.
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Affiliation(s)
- Alessandro Manfrin
- Institute of Biogeochemistry and Pollutant Dynamics, Department of Environmental Systems Science , ETH Zurich , 8092 Zurich , Switzerland
| | - Nadine Borduas-Dedekind
- Institute of Biogeochemistry and Pollutant Dynamics, Department of Environmental Systems Science , ETH Zurich , 8092 Zurich , Switzerland
| | - Kate Lau
- Institute of Biogeochemistry and Pollutant Dynamics, Department of Environmental Systems Science , ETH Zurich , 8092 Zurich , Switzerland
| | - Kristopher McNeill
- Institute of Biogeochemistry and Pollutant Dynamics, Department of Environmental Systems Science , ETH Zurich , 8092 Zurich , Switzerland
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Liu Y, Ma Z, Zhao X, Shan Q, He P, Du Y, Wang Y. Simple and Efficient Synthesis of Anithiactins A‐C, Thiasporine A and Their Potent Antitumor 2,4‐Linked Oligothiazole Derivatives. ChemistrySelect 2019. [DOI: 10.1002/slct.201803664] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yi Liu
- School of Chemistry and Chemical EngineeringYantai University Yantai 264005 China
| | - Zhanwei Ma
- School of Chemistry and Chemical EngineeringYantai University Yantai 264005 China
| | - Xiangyun Zhao
- School of Chemistry and Chemical EngineeringYantai University Yantai 264005 China
| | - Qiuli Shan
- School of Biological Science and TechnologyUniversity of Jinan Jinan 250022 China
| | - Peng He
- State Key Laboratory of Environmental Chemistry and Eco-toxicologyResearch Center for Eco-Environmental SciencesChinese Academy of Sciences Beijing 100085 China
| | - Yuguo Du
- State Key Laboratory of Environmental Chemistry and Eco-toxicologyResearch Center for Eco-Environmental SciencesChinese Academy of Sciences Beijing 100085 China
| | - Yibin Wang
- Key Laboratory of Marine Ecology and Environmental Science and EngineeringFirst Institute of Oceanography State Oceanic Administration Qingdao 266061 China
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