{"title":"从红树林产链霉菌 SCSIO 40068 中发现具有抗菌和细胞毒性活性的 Kebanmycins。","authors":"Mengran Zhao, Wenjun Zhang, Chunfang Yang*, Liping Zhang, Huarong Huang, Yiguang Zhu, Disna Ratnasekera and Changsheng Zhang*, ","doi":"10.1021/acs.jnatprod.4c00232","DOIUrl":null,"url":null,"abstract":"<p >Mangrove derived actinomycetes are a rich reservoir of bioactive natural products and play important roles in pharmaceutical chemistry. In a screen of actinomycetes from mangrove rhizosphere sedimental environments, the isolated strain <i>Streptomyces</i> sp. SCSIO 40068 displayed strong antibacterial activity. Further fractionation of the extract yielded four new compounds kebanmycins A–D (<b>1</b>–<b>4</b>) and two known analogues FD-594 (<b>5</b>) and the aglycon (<b>6</b>). The structures of <b>1</b>–<b>6</b> were determined based on extensive spectroscopic data and single-crystal X-ray diffraction analysis. <b>1</b>–<b>3</b> featured a fused pyranonaphthaxanthene as an integral part of a 6/6/6/6/6/6 polycyclic motif, and showed bioactivity against a series of Gram-positive bacteria and cytotoxicity to several human tumor cells. In addition, the kebanmycins biosynthetic gene cluster (<i>keb</i>) was identified in <i>Streptomyces</i> sp. SCSIO 40068, and KebMT2 was biochemically characterized as a tailoring sugar-<i>O</i>-methyltransferase, leading to a proposed biosynthetic route to <b>1</b>–<b>6</b>. This study paves the way to further investigate <b>1</b> as a potential lead compound.</p>","PeriodicalId":47,"journal":{"name":"Journal of Natural Products ","volume":null,"pages":null},"PeriodicalIF":3.3000,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Discovery of Kebanmycins with Antibacterial and Cytotoxic Activities from the Mangrove-Derived Streptomyces sp. SCSIO 40068\",\"authors\":\"Mengran Zhao, Wenjun Zhang, Chunfang Yang*, Liping Zhang, Huarong Huang, Yiguang Zhu, Disna Ratnasekera and Changsheng Zhang*, \",\"doi\":\"10.1021/acs.jnatprod.4c00232\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Mangrove derived actinomycetes are a rich reservoir of bioactive natural products and play important roles in pharmaceutical chemistry. In a screen of actinomycetes from mangrove rhizosphere sedimental environments, the isolated strain <i>Streptomyces</i> sp. SCSIO 40068 displayed strong antibacterial activity. Further fractionation of the extract yielded four new compounds kebanmycins A–D (<b>1</b>–<b>4</b>) and two known analogues FD-594 (<b>5</b>) and the aglycon (<b>6</b>). The structures of <b>1</b>–<b>6</b> were determined based on extensive spectroscopic data and single-crystal X-ray diffraction analysis. <b>1</b>–<b>3</b> featured a fused pyranonaphthaxanthene as an integral part of a 6/6/6/6/6/6 polycyclic motif, and showed bioactivity against a series of Gram-positive bacteria and cytotoxicity to several human tumor cells. In addition, the kebanmycins biosynthetic gene cluster (<i>keb</i>) was identified in <i>Streptomyces</i> sp. SCSIO 40068, and KebMT2 was biochemically characterized as a tailoring sugar-<i>O</i>-methyltransferase, leading to a proposed biosynthetic route to <b>1</b>–<b>6</b>. This study paves the way to further investigate <b>1</b> as a potential lead compound.</p>\",\"PeriodicalId\":47,\"journal\":{\"name\":\"Journal of Natural Products \",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.3000,\"publicationDate\":\"2024-06-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Natural Products \",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acs.jnatprod.4c00232\",\"RegionNum\":2,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, MEDICINAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Natural Products ","FirstCategoryId":"99","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acs.jnatprod.4c00232","RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MEDICINAL","Score":null,"Total":0}
Discovery of Kebanmycins with Antibacterial and Cytotoxic Activities from the Mangrove-Derived Streptomyces sp. SCSIO 40068
Mangrove derived actinomycetes are a rich reservoir of bioactive natural products and play important roles in pharmaceutical chemistry. In a screen of actinomycetes from mangrove rhizosphere sedimental environments, the isolated strain Streptomyces sp. SCSIO 40068 displayed strong antibacterial activity. Further fractionation of the extract yielded four new compounds kebanmycins A–D (1–4) and two known analogues FD-594 (5) and the aglycon (6). The structures of 1–6 were determined based on extensive spectroscopic data and single-crystal X-ray diffraction analysis. 1–3 featured a fused pyranonaphthaxanthene as an integral part of a 6/6/6/6/6/6 polycyclic motif, and showed bioactivity against a series of Gram-positive bacteria and cytotoxicity to several human tumor cells. In addition, the kebanmycins biosynthetic gene cluster (keb) was identified in Streptomyces sp. SCSIO 40068, and KebMT2 was biochemically characterized as a tailoring sugar-O-methyltransferase, leading to a proposed biosynthetic route to 1–6. This study paves the way to further investigate 1 as a potential lead compound.
期刊介绍:
The Journal of Natural Products invites and publishes papers that make substantial and scholarly contributions to the area of natural products research. Contributions may relate to the chemistry and/or biochemistry of naturally occurring compounds or the biology of living systems from which they are obtained.
Specifically, there may be articles that describe secondary metabolites of microorganisms, including antibiotics and mycotoxins; physiologically active compounds from terrestrial and marine plants and animals; biochemical studies, including biosynthesis and microbiological transformations; fermentation and plant tissue culture; the isolation, structure elucidation, and chemical synthesis of novel compounds from nature; and the pharmacology of compounds of natural origin.
When new compounds are reported, manuscripts describing their biological activity are much preferred.
Specifically, there may be articles that describe secondary metabolites of microorganisms, including antibiotics and mycotoxins; physiologically active compounds from terrestrial and marine plants and animals; biochemical studies, including biosynthesis and microbiological transformations; fermentation and plant tissue culture; the isolation, structure elucidation, and chemical synthesis of novel compounds from nature; and the pharmacology of compounds of natural origin.