1
|
Bege M, Herczeg M, Bereczki I, Debreczeni N, Bényei A, Herczegh P, Borbás A. Triaza-tricyclanos - synthesis of a new class of tricyclic nucleoside analogues by stereoselective cascade cyclocondensation. Org Biomol Chem 2023; 21:2213-2219. [PMID: 36804654 DOI: 10.1039/d3ob00154g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Herein, we report a stereoselective synthesis of a novel type of conformationally constrained nucleoside analogue in which the sugar part is replaced by a new symmetrical tricycle consisting of a morpholine ring condensed with two imidazolidines. 1,5-Dialdehydes obtained from trityl- and dimethoxytrityl-protected uridine, ribothymidine, inosine, cytidine, adenosine and guanosine by metaperiodate oxidation were reacted with N1,N3-dibenzyl-1,2,3-triaminopropane; the latter reactant was produced using a new method that avoids explosive intermediates. Reactions of dialdehydes with propane-triamine via cascade tricyclization resulted in the corresponding triaza-tricyclic derivatives bearing three new stereogenic centers in high yields. Out of the eight possible diastereoisomers, one stereoisomer was formed in each case due to the chiral control of the starting nucleoside-dialdehydes and the steric constraint of the condensed ring system. The absolute configuration of the new stereotriad was determined by X-ray diffraction and NMR experiments. A mechanistic study performed under reductive conditions to trap the presumed bicyclic intermediate showed that the triamine reactant first attacks the 2'-aldehyde group, followed by a rapid bicyclization to form the imidazolidino-morpholine unit.
Collapse
Affiliation(s)
- Miklós Bege
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary. .,Institute of Healthcare Industry, University of Debrecen, Nagyerdei krt 98, 4032 Debrecen, Hungary.,MTA-DE Molecular Recognition and Interaction Research Group, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary
| | - Mihály Herczeg
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary.
| | - Ilona Bereczki
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary. .,National Laboratory of Virology, University of Pécs, Ifjúság útja 20, H-7624 Pécs, Hungary.,Pharmamodul Research Group, University of Debrecen, Nagyerdei krt 98, 4032 Debrecen, Hungary
| | - Nóra Debreczeni
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary.
| | - Attila Bényei
- X-ray Diffraction Laboratory, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary
| | - Pál Herczegh
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary.
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary. .,National Laboratory of Virology, University of Pécs, Ifjúság útja 20, H-7624 Pécs, Hungary
| |
Collapse
|
2
|
Lu S, Zhou T, Fukaya K, Harunari E, Oku N, Urabe D, Igarashi Y. Krasilnikolides A and B and Detalosylkrasilnikolide A, Cytotoxic 20-Membered Macrolides from the Genus Krasilnikovia: Assignment of Anomeric Configuration by J-Based Configuration Analysis. JOURNAL OF NATURAL PRODUCTS 2022; 85:2796-2803. [PMID: 36482689 DOI: 10.1021/acs.jnatprod.2c00781] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A chemical investigation of strain RD003821, belonging to the underexplored actinomycetes genus Krasilnikovia, led to the discovery of three novel polyketides: two 20-membered glycomacrolides, krasilnikolides A (1) and B (2), and an aglycone of 1, detalosylkrasilnikolide A (3). A major challenge in the structure elucidation of 1 was to determine the anomeric configuration of the α-l-6-deoxytalose (6dTal) unit, which was achieved by J-based configuration analysis (JBCA) that incorporated anomeric carbon- and proton-specific two-bond 13C-1H spin-spin coupling constants as diagnostic parameters. The updated criteria for the conformation/configuration assignment facilitated discrimination of three out of four stereochemical variants at the anomeric and the adjacent C2 positions, which expanded the scope of the JBCA method to determination of the anomeric configuration of aldohexopyranoses. Compounds 1 and 2 are the first macrolides decorated by 6dTal. Compounds 1-3 exhibited cytotoxicity against P388 murine leukemia cells with IC50 values of 14, 8.4, and 3.9 μM, respectively. In addition, 1-3 were antibacterial against the Gram-positive bacterium Kocuria rhizophila with MIC values of 25, 50, and 100 μg/mL. 1 was inhibitory against Staphylococcus aureus with an MIC of 50 μg/mL.
Collapse
Affiliation(s)
- Shiyang Lu
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Tao Zhou
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Keisuke Fukaya
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Enjuro Harunari
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Naoya Oku
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Daisuke Urabe
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Yasuhiro Igarashi
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| |
Collapse
|
3
|
Chen Z, Sato S, Geng Y, Zhang J, Liu HW. Identification of the Early Steps in Herbicidin Biosynthesis Reveals an Atypical Mechanism of C-Glycosylation. J Am Chem Soc 2022; 144:15653-15661. [PMID: 35981300 DOI: 10.1021/jacs.2c05728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Herbicidins are adenosine-derived nucleoside antibiotics with an unusual tricyclic core structure. Deletion of the genes responsible for formation of the tricyclic skeleton in Streptomyces sp. L-9-10 reveals the in vivo importance of Her4, Her5, and Her6 in the early stages of herbicidin biosynthesis. In vitro characterization of Her4 and Her5 demonstrates their involvement in an initial, two-stage C-C coupling reaction that results in net C5'-glycosylation of ADP/ATP by UDP/TDP-glucuronic acid. Biochemical analyses and intermediate trapping experiments imply a noncanonical mechanism of C-glycosylation reminiscent of NAD-dependent S-adenosylhomocysteine (SAH)-hydrolase catalysis. Structural characterization of the isolated metabolites suggests possible reactions catalyzed by Her6 and Her7. An overall herbicidin biosynthetic pathway is proposed based on these observations.
Collapse
Affiliation(s)
- Zhang Chen
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Shusuke Sato
- Division of Chemical Biology and Medicinal Chemistry, College of Pharmacy, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Yujie Geng
- Division of Chemical Biology and Medicinal Chemistry, College of Pharmacy, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Jiawei Zhang
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Hung-Wen Liu
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States.,Division of Chemical Biology and Medicinal Chemistry, College of Pharmacy, The University of Texas at Austin, Austin, Texas 78712, United States
| |
Collapse
|
4
|
Trehangelin E, a bisacyl trehalose with plant growth promoting activity from a rare actinomycete Polymorphospora sp. RD064483. J Antibiot (Tokyo) 2022; 75:296-300. [PMID: 35322208 DOI: 10.1038/s41429-022-00519-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 03/03/2022] [Accepted: 03/03/2022] [Indexed: 11/09/2022]
Abstract
Trehangelin E (1), a new bisacyl trehalose, was isolated from the culture extract of an actinomycete Polymorphospora sp. RD064483, along with three known congeners, trehangelins A, B, and D. Compound 1 is a new trehalose derivative acylated with (Z)-2-methyl-2-butenoic acid (angelic acid) at 3- and 6'-positions, as determined by NMR and MS analyses. Compound 1 promoted root elongation of germinated lettuce seeds by 30% at 1 μM and 90% at 10 μM compared to the nontreated seeds. Similar promoting activity of root elongation was also observed with trehangelins A and B at the same level.
Collapse
|
5
|
Zhang Y, Bai J, Yan D, Liu B, Zhang L, Zhang C, Chen M, Mou Y, Hu Y. Highly Oxygenated Caryophyllene-Type Sesquiterpenes from a Plant-Associated Fungus, Pestalotiopsis hainanensis, and Their Biosynthetic Gene Cluster. JOURNAL OF NATURAL PRODUCTS 2020; 83:3262-3269. [PMID: 33064488 DOI: 10.1021/acs.jnatprod.0c00501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Seven new β-caryophyllene derivatives, pestalotiphains A-G (1-7), along with six known analogues (8-13), were isolated from the plant-associated Pestalotiopsis hainanensis. Compound 1 represents the first example of a caryophyllene-adenine hybrid, and 2 contains a novel oxatricyclo[4.3.1.0] system. Their structures and absolute configurations were assigned by interpretation of a combination of spectroscopic data and electronic circular dichroism calculations. Compound 8 exhibited moderate inhibition of HL-60 and THP-1 cell lines (IC50, 6.2 and 2.0 μM, respectively). A candidate biosynthetic gene cluster responsible for these compounds was uncovered by bioinformatics analyses and confirmed by a biochemical approach.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Minghua Chen
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, People's Republic of China
| | - Yanhua Mou
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 117004, People's Republic of China
| | | |
Collapse
|
6
|
Abstract
Interactions among microbes are key drivers of evolutionary progress and constantly shape ecological niches. Microorganisms rely on chemical communication to interact with each other and surrounding organisms. They synthesize natural products as signaling molecules, antibiotics, or modulators of cellular processes that may be applied in agriculture and medicine. Whereas major insight has been gained into the principles of intraspecies interaction, much less is known about the molecular basis of interspecies interplay. In this review, we summarize recent progress in the understanding of chemically mediated bacterial-fungal interrelations. We discuss pairwise interactions among defined species and systems involving additional organisms as well as complex interactions among microbial communities encountered in the soil or defined as microbiota of higher organisms. Finally, we give examples of how the growing understanding of microbial interactions has contributed to drug discovery and hypothesize what may be future directions in studying and engineering microbiota for agricultural or medicinal purposes.
Collapse
Affiliation(s)
- Kirstin Scherlach
- Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Research and Infection Biology, 07745 Jena, Germany
| | - Christian Hertweck
- Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Research and Infection Biology, 07745 Jena, Germany
- Faculty of Biological Sciences, Friedrich Schiller University Jena, 07745 Jena, Germany
| |
Collapse
|
7
|
Shi Y, Gu R, Li Y, Wang X, Ren W, Li X, Wang L, Xie Y, Hong B. Exploring novel herbicidin analogues by transcriptional regulator overexpression and MS/MS molecular networking. Microb Cell Fact 2019; 18:175. [PMID: 31615513 PMCID: PMC6794829 DOI: 10.1186/s12934-019-1225-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Accepted: 10/01/2019] [Indexed: 11/10/2022] Open
Abstract
Background Herbicidin F has an undecose tricyclic furano-pyrano-pyran structure with post-decorations. It was detected from Streptomyces mobaraensis US-43 fermentation broth as a trace component by HPLC–MS analysis. As herbicidins exhibit herbicidal, antibacterial, antifungal and antiparasitic activities, we are attracted to explore more analogues for further development. Results The genome of S. mobaraensis US-43 was sequenced and a herbicidin biosynthetic gene cluster (hcd) was localized. The cluster contains structural genes, one transporter and three potential transcription regulatory genes. Overexpression of the three regulators respectively showed that only hcdR2 overexpression significantly improved the production of herbicidin F, and obviously increased the transcripts of 7 structural genes as well as the transporter gene. After performing homology searches using BLASTP in the GenBank database, 14 hcd-like clusters were found with a cluster-situated hcdR2 homologue. These HcdR2 orthologues showed overall structural similarity, especially in the C-terminal DNA binding domain. Based on bioinformatics analysis, a 21-bp consensus binding motif of HcdR2 was detected within 30 promoter regions in these genome-mined clusters. EMSA results verified that HcdR2 bound to the predicted consensus sequence. Additionally, we employed molecular networking to explore novel herbicidin analogues in hcdR2 overexpression strain. As a result, ten herbicidin analogues including six new compounds were identified based on MS/MS fragments. Herbicidin O was further purified and confirmed by 1H NMR spectrum. Conclusions A herbicidin biosynthetic gene cluster (hcd) was identified in S. mobaraensis US-43. HcdR2, a member of LuxR family, was identified as the pathway-specific positive regulator, and the production of herbicidin F was dramatically increased by overexpression of hcdR2. Combined with molecular networking, ten herbicidin congeners including six novel herbicidin analogues were picked out from the secondary metabolites of hcdR2 overexpression strain. The orthologues of herbicidin F pathway-specific regulator HcdR2 were present in most of the genome-mined homologous biosynthetic gene clusters, which possessed at least one consensus binding motif with LuxR family characteristic. These results indicated that the combination of overexpression of hcdR2 orthologous regulator and molecular networking might be an effective way to exploit the “cryptic” herbicidin-related biosynthetic gene clusters for discovery of novel herbicidin analogues.
Collapse
Affiliation(s)
- Yuanyuan Shi
- NHC Key Laboratory of Biotechnology of Antibiotics, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, No.1 Tiantan Xili, Beijing, 100050, China.,CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, No.1 Tiantan Xili, Beijing, 100050, China
| | - Renjie Gu
- NHC Key Laboratory of Biotechnology of Antibiotics, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, No.1 Tiantan Xili, Beijing, 100050, China
| | - Yihong Li
- CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, No.1 Tiantan Xili, Beijing, 100050, China
| | - Xinwei Wang
- CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, No.1 Tiantan Xili, Beijing, 100050, China
| | - Weicong Ren
- NHC Key Laboratory of Biotechnology of Antibiotics, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, No.1 Tiantan Xili, Beijing, 100050, China
| | - Xingxing Li
- NHC Key Laboratory of Biotechnology of Antibiotics, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, No.1 Tiantan Xili, Beijing, 100050, China.,CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, No.1 Tiantan Xili, Beijing, 100050, China
| | - Lifei Wang
- NHC Key Laboratory of Biotechnology of Antibiotics, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, No.1 Tiantan Xili, Beijing, 100050, China.,CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, No.1 Tiantan Xili, Beijing, 100050, China
| | - Yunying Xie
- CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, No.1 Tiantan Xili, Beijing, 100050, China.
| | - Bin Hong
- NHC Key Laboratory of Biotechnology of Antibiotics, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, No.1 Tiantan Xili, Beijing, 100050, China. .,CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, No.1 Tiantan Xili, Beijing, 100050, China.
| |
Collapse
|
8
|
Qin Y, Liu X, Lin J, Huang J, Jiang X, Mo T, Xu Z, Li J, Yang R. Two new phthalide derivatives from the endophytic fungus Penicillium vulpinum isolated from Sophora tonkinensis. Nat Prod Res 2019; 35:421-427. [PMID: 31274005 DOI: 10.1080/14786419.2019.1636237] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Two new phthalide derivatives, (-)-3-carboxypropyl-7-hydroxyphthalide (1) and (-)-3-carboxypropyl-7-hydroxyphthalide methyl ester (2), were isolated from the endophytic fungus Penicillium vulpinum isolated from the Chinese medicinal plant Sophora tonkinensis. Their structures were elucidated using spectroscopic methods, mainly on 1D and 2D NMR. Compound 1 exhibited medium antibacterial activities against Bacillus subtilis, Shigella dysenteriae and Enterobacter areogenes with MIC values of 12.5-25 μg/mL, and 2 showed a medium inhibition to E. areogenes with MIC value of 12.5 μg/mL.
Collapse
Affiliation(s)
- Yuyue Qin
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Xiaobo Liu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Jing Lin
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Jingying Huang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Xiaofei Jiang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Tuxiang Mo
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Zhaolong Xu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Jun Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Ruiyun Yang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| |
Collapse
|
9
|
Pan HX, Chen Z, Zeng T, Jin WB, Geng Y, Lin GM, Zhao J, Li WT, Xiong Z, Huang SX, Zhai X, Liu HW, Tang GL. Elucidation of the Herbicidin Tailoring Pathway Offers Insights into Its Structural Diversity. Org Lett 2019; 21:1374-1378. [PMID: 30763106 DOI: 10.1021/acs.orglett.9b00066] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The biosynthetic gene clusters for herbicidins ( hbc) and aureonuclemycin ( anm) were identified in Streptomyces sp. KIB-027 and Streptomyces aureus, respectively. The roles of genes possibly involved in post-core-assembly steps in herbicidin biosynthesis in these clusters and a related her cluster were studied. Through systematic gene deletions, structural elucidation of the accumulated intermediates in the mutants, and in vitro verification of the encoded enzymes, the peripheral modification pathway for herbicidin biosynthesis is now fully established.
Collapse
Affiliation(s)
- Hai-Xue Pan
- State Key Laboratory of Bio-organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences (CAS), CAS, Shanghai 200032 , China
| | | | - Tianfang Zeng
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Wen-Bing Jin
- State Key Laboratory of Bio-organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences (CAS), CAS, Shanghai 200032 , China
| | | | | | - Juan Zhao
- State Key Laboratory of Bio-organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences (CAS), CAS, Shanghai 200032 , China
| | - Wei-Tao Li
- State Key Laboratory of Bio-organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences (CAS), CAS, Shanghai 200032 , China
| | - Zijun Xiong
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany , CAS, Kunming 650201 , China
| | - Sheng-Xiong Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany , CAS, Kunming 650201 , China
| | - Xin Zhai
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | | | - Gong-Li Tang
- State Key Laboratory of Bio-organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences (CAS), CAS, Shanghai 200032 , China
| |
Collapse
|
10
|
Chen JJ, Rateb ME, Love MS, Xu Z, Yang D, Zhu X, Huang Y, Zhao LX, Jiang Y, Duan Y, McNamara CW, Shen B. Herbicidins from Streptomyces sp. CB01388 Showing Anti- Cryptosporidium Activity. JOURNAL OF NATURAL PRODUCTS 2018; 81:791-797. [PMID: 29469575 DOI: 10.1021/acs.jnatprod.7b00850] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A high-content imaging assay was used to screen the fraction collection of the Natural Product Library at The Scripps Research Institute for inhibitors of Cryptosporidium parvum. A chemical investigation of one strain, Streptomyces sp. CB01388, resulted in the isolation of six herbicidins (1-6), one of which is new (herbicidin L, 1). Five of the six herbicidins (1-3, 5, 6) showed moderate inhibitory activity against C. parvum, with 1 and 6 comparable to the FDA-approved drug nitazoxanide, and 2-6 showed no toxicity to the host HCT-8 cells and human HEK293T and HepG2 cells. These findings highlight the herbicidin scaffold for anti- Cryptosporidium drug development.
Collapse
Affiliation(s)
- Jian-Jun Chen
- Department of Chemistry , The Scripps Research Institute , Jupiter , Florida 33458 , United States
| | - Mostafa E Rateb
- Department of Chemistry , The Scripps Research Institute , Jupiter , Florida 33458 , United States
| | - Melissa S Love
- California Institute for Biomedical Research , La Jolla , California 92037 , United States
| | - Zhengren Xu
- Department of Chemistry , The Scripps Research Institute , Jupiter , Florida 33458 , United States
| | - Dong Yang
- Department of Chemistry , The Scripps Research Institute , Jupiter , Florida 33458 , United States
- Natural Products Library Initiative at The Scripps Research Institute , The Scripps Research Institute , Jupiter , Florida 33458 , United States
| | - Xiangcheng Zhu
- Xiangya International Academy of Translational Medicine , Central South University , Changsha , Hunan 410013 , People's Republic of China
- Hunan Engineering Research Center of Combinatorial Biosynthesis and Natural Product Drug Discovery , Changsha , Hunan 410013 , People's Republic of China
| | - Yong Huang
- Xiangya International Academy of Translational Medicine , Central South University , Changsha , Hunan 410013 , People's Republic of China
| | - Li-Xing Zhao
- Yunnan Institute of Microbiology , Yunnan University , Kunming , Yunnan 650091 , People's Republic of China
| | - Yi Jiang
- Yunnan Institute of Microbiology , Yunnan University , Kunming , Yunnan 650091 , People's Republic of China
| | - Yanwen Duan
- Xiangya International Academy of Translational Medicine , Central South University , Changsha , Hunan 410013 , People's Republic of China
- Hunan Engineering Research Center of Combinatorial Biosynthesis and Natural Product Drug Discovery , Changsha , Hunan 410013 , People's Republic of China
| | - Case W McNamara
- California Institute for Biomedical Research , La Jolla , California 92037 , United States
| | - Ben Shen
- Department of Chemistry , The Scripps Research Institute , Jupiter , Florida 33458 , United States
- Natural Products Library Initiative at The Scripps Research Institute , The Scripps Research Institute , Jupiter , Florida 33458 , United States
- Department of Molecular Medicine , The Scripps Research Institute , Jupiter , Florida 33458 , United States
| |
Collapse
|
11
|
Calcott MJ, Ackerley DF, Knight A, Keyzers RA, Owen JG. Secondary metabolism in the lichen symbiosis. Chem Soc Rev 2018; 47:1730-1760. [PMID: 29094129 DOI: 10.1039/c7cs00431a] [Citation(s) in RCA: 115] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Lichens, which are defined by a core symbiosis between a mycobiont (fungal partner) and a photobiont (photoautotrophic partner), are in fact complex assemblages of microorganisms that constitute a largely untapped source of bioactive secondary metabolites. Historically, compounds isolated from lichens have predominantly been those produced by the dominant fungal partner, and these continue to be of great interest for their unique chemistry and biotechnological potential. In recent years it has become apparent that many photobionts and lichen-associated bacteria also produce a range of potentially valuable molecules. There is evidence to suggest that the unique nature of the symbiosis has played a substantial role in shaping many aspects of lichen chemistry, for example driving bacteria to produce metabolites that do not bring them direct benefit but are useful to the lichen as a whole. This is most evident in studies of cyanobacterial photobionts, which produce compounds that differ from free living cyanobacteria and are unique to symbiotic organisms. The roles that these and other lichen-derived molecules may play in communication and maintaining the symbiosis are poorly understood at present. Nonetheless, advances in genomics, mass spectrometry and other analytical technologies are continuing to illuminate the wealth of biological and chemical diversity present within the lichen holobiome. Implementation of novel biodiscovery strategies such as metagenomic screening, coupled with synthetic biology approaches to reconstitute, re-engineer and heterologously express lichen-derived biosynthetic gene clusters in a cultivable host, offer a promising means for tapping into this hitherto inaccessible wealth of natural products.
Collapse
Affiliation(s)
- Mark J Calcott
- School of Biological Sciences, Victoria University of Wellington, New Zealand.
| | | | | | | | | |
Collapse
|
12
|
Lin GM, Romo AJ, Liem PH, Chen Z, Liu HW. Identification and Interrogation of the Herbicidin Biosynthetic Gene Cluster: First Insight into the Biosynthesis of a Rare Undecose Nucleoside Antibiotic. J Am Chem Soc 2017; 139:16450-16453. [PMID: 29111702 DOI: 10.1021/jacs.7b08985] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herbicidins are adenosine-based nucleoside antibiotics with an unusual tricyclic undecose core decorated with a (5-hydroxy)tiglyl moiety. Feeding studies are herein reported demonstrating that the tricyclic core is derived from d-glucose and d-ribose, whereas the tiglyl moiety is derived from an intermediate of l-isoleucine catabolism. Identification of the gene cluster for herbicidin A biosynthesis in Streptomyces sp. L-9-10 as well as its verification by heterologous expression in a nonproducing host are described, and the results of in vitro characterization of a carboxyl methyltransferase encoded in the cluster, Her8, are presented. Based on these observations, a biosynthetic pathway is proposed for herbicidins.
Collapse
Affiliation(s)
- Geng-Min Lin
- Department of Chemistry, ‡Division of Chemical Biology and Medicinal Chemistry, College of Pharmacy, and §Department of Biochemistry, University of Texas at Austin , Austin, Texas 78712, United States
| | - Anthony J Romo
- Department of Chemistry, ‡Division of Chemical Biology and Medicinal Chemistry, College of Pharmacy, and §Department of Biochemistry, University of Texas at Austin , Austin, Texas 78712, United States
| | - Priscilla H Liem
- Department of Chemistry, ‡Division of Chemical Biology and Medicinal Chemistry, College of Pharmacy, and §Department of Biochemistry, University of Texas at Austin , Austin, Texas 78712, United States
| | - Zhang Chen
- Department of Chemistry, ‡Division of Chemical Biology and Medicinal Chemistry, College of Pharmacy, and §Department of Biochemistry, University of Texas at Austin , Austin, Texas 78712, United States
| | - Hung-Wen Liu
- Department of Chemistry, ‡Division of Chemical Biology and Medicinal Chemistry, College of Pharmacy, and §Department of Biochemistry, University of Texas at Austin , Austin, Texas 78712, United States
| |
Collapse
|
13
|
Discovery of 9 H -purins as potential tubulin polymerization inhibitors: Synthesis, biological evaluation and structure−activity relationships. Eur J Med Chem 2017; 138:1126-1134. [DOI: 10.1016/j.ejmech.2017.07.054] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 05/19/2017] [Accepted: 07/23/2017] [Indexed: 02/08/2023]
|
14
|
Abstract
Covering: July 2012 to June 2015. Previous review: Nat. Prod. Rep., 2013, 30, 869-915The structurally diverse imidazole-, oxazole-, and thiazole-containing secondary metabolites are widely distributed in terrestrial and marine environments, and exhibit extensive pharmacological activities. In this review the latest progress involving the isolation, biological activities, and chemical and biogenetic synthesis studies on these natural products has been summarized.
Collapse
Affiliation(s)
- Zhong Jin
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China. and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
| |
Collapse
|
15
|
Zhang JC, Yang YB, Chen GY, Li XZ, Hu M, Wang BY, Ruan BH, Zhou H, Zhao LX, Ding ZT. 8′-epimer of herbicidin F and its congeners from Streptomyces sp. YIM 66142. J Antibiot (Tokyo) 2016; 70:313-316. [DOI: 10.1038/ja.2016.133] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2016] [Revised: 09/02/2016] [Accepted: 10/03/2016] [Indexed: 11/09/2022]
|