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Lenz KD, Klosterman KE, Mukundan H, Kubicek-Sutherland JZ. Macrolides: From Toxins to Therapeutics. Toxins (Basel) 2021; 13:347. [PMID: 34065929 PMCID: PMC8150546 DOI: 10.3390/toxins13050347] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 05/07/2021] [Accepted: 05/08/2021] [Indexed: 12/17/2022] Open
Abstract
Macrolides are a diverse class of hydrophobic compounds characterized by a macrocyclic lactone ring and distinguished by variable side chains/groups. Some of the most well characterized macrolides are toxins produced by marine bacteria, sea sponges, and other species. Many marine macrolide toxins act as biomimetic molecules to natural actin-binding proteins, affecting actin polymerization, while other toxins act on different cytoskeletal components. The disruption of natural cytoskeletal processes affects cell motility and cytokinesis, and can result in cellular death. While many macrolides are toxic in nature, others have been shown to display therapeutic properties. Indeed, some of the most well known antibiotic compounds, including erythromycin, are macrolides. In addition to antibiotic properties, macrolides have been shown to display antiviral, antiparasitic, antifungal, and immunosuppressive actions. Here, we review each functional class of macrolides for their common structures, mechanisms of action, pharmacology, and human cellular targets.
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Affiliation(s)
| | | | | | - Jessica Z. Kubicek-Sutherland
- Physical Chemistry and Applied Spectroscopy, Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA; (K.D.L.); (K.E.K.); (H.M.)
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2
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Zhang H, Zou J, Yan X, Chen J, Cao X, Wu J, Liu Y, Wang T. Marine-Derived Macrolides 1990-2020: An Overview of Chemical and Biological Diversity. Mar Drugs 2021; 19:180. [PMID: 33806230 PMCID: PMC8066444 DOI: 10.3390/md19040180] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 03/19/2021] [Accepted: 03/21/2021] [Indexed: 12/18/2022] Open
Abstract
Macrolides are a significant family of natural products with diverse structures and bioactivities. Considerable effort has been made in recent decades to isolate additional macrolides and characterize their chemical and bioactive properties. The majority of macrolides are obtained from marine organisms, including sponges, marine microorganisms and zooplankton, cnidarians, mollusks, red algae, bryozoans, and tunicates. Sponges, fungi and dinoflagellates are the main producers of macrolides. Marine macrolides possess a wide range of bioactive properties including cytotoxic, antibacterial, antifungal, antimitotic, antiviral, and other activities. Cytotoxicity is their most significant property, highlighting that marine macrolides still encompass many potential antitumor drug leads. This extensive review details the chemical and biological diversity of 505 macrolides derived from marine organisms which have been reported from 1990 to 2020.
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Affiliation(s)
| | | | | | | | | | | | | | - Tingting Wang
- Li Dak Sum Marine Biopharmaceutical Research Center, Department of Marine Pharmacy, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315800, China; (H.Z.); (J.Z.); (X.Y.); (J.C.); (X.C.); (J.W.); (Y.L.)
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3
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Li H, Zhang M, Li H, Yu H, Chen S, Wu W, Sun P. Discovery of Venturicidin Congeners and Identification of the Biosynthetic Gene Cluster from Streptomyces sp. NRRL S-4. J Nat Prod 2021; 84:110-119. [PMID: 33356258 DOI: 10.1021/acs.jnatprod.0c01177] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Chemical screening of Streptomyces sp. NRRL S-4 with liquid chromatography-mass spectrometry (LC-MS) and the following chromatographic isolation led to the discovery of four 20-membered macrolides, venturicidin A (4) and three new congeners venturicidins D-F (1-3). Genome sequencing of strain S-4 revealed the presence of a biosynthetic gene cluster (BGC) encoding glycosylated type I polyketides (PKS). The BGC designated to venturicidin biosynthesis (ven) was supported by the proposed biosynthetic pathway and confirmed by inactivation of the core PKS gene of venK. Bioinformatic analyses on the conserved motifs and known stereospecificities in PKS modules are consistent with the structure and absolute configuration. This is the first report of venturicidin BGC since the discovery of the macrolide in 1961. In the biological assays, venturicidin A (4) and E (2) displayed a high selective cytotoxicity against acute monocytic leukemia MV-4-11 cells with IC50 values of 0.09 and 0.94 μM, respectively. Venturicidin A (4) also showed a weak inhibitory activity on FMS-like-tyrosine kinase.
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Affiliation(s)
- Huanhuan Li
- School of Pharmacy, Second Military Medical University, 325 Guo-He Road, Shanghai 200433, People's Republic of China
- College of Food Science and Technology, Shanghai Ocean University, 999 Huchenghuan Road, Shanghai 201306, People's Republic of China
| | - Mengxue Zhang
- School of Pharmacy, Second Military Medical University, 325 Guo-He Road, Shanghai 200433, People's Republic of China
- College of Food Science and Technology, Shanghai Ocean University, 999 Huchenghuan Road, Shanghai 201306, People's Republic of China
| | - Hongji Li
- School of Pharmacy, Second Military Medical University, 325 Guo-He Road, Shanghai 200433, People's Republic of China
| | - Hai Yu
- School of Pharmacy, Second Military Medical University, 325 Guo-He Road, Shanghai 200433, People's Republic of China
| | - Shuo Chen
- School of Pharmacy, Second Military Medical University, 325 Guo-He Road, Shanghai 200433, People's Republic of China
- College of Food Science and Technology, Shanghai Ocean University, 999 Huchenghuan Road, Shanghai 201306, People's Republic of China
| | - Wenhui Wu
- College of Food Science and Technology, Shanghai Ocean University, 999 Huchenghuan Road, Shanghai 201306, People's Republic of China
| | - Peng Sun
- School of Pharmacy, Second Military Medical University, 325 Guo-He Road, Shanghai 200433, People's Republic of China
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4
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Abstract
Natural products possess a wide range of bioactivities with potential for therapeutic usage. While the distribution of these molecules can vary greatly there is some correlation that exists between the biodiversity of an environment and the uniqueness and concentration of natural products found in that region or area. The Caribbean and pan-Caribbean area is home to thousands of species of endemic fauna and flora providing huge potential for natural product discovery and by way, potential leads for drug development. This can especially be said for marine natural products as many of are rapidly diluted through diffusion once released and therefore are highly potent to achieve long reaching effects. This review seeks to highlight a small selection of marine natural products from the Caribbean region which possess antiproliferative, anti-inflammatory and antipathogenic properties while highlighting any synthetic efforts towards bioactive analogs.
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Affiliation(s)
- Adrian Demeritte
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, GA 30322, USA
| | - William M Wuest
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, GA 30322, USA.
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5
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Yamada T, Kogure H, Kataoka M, Kikuchi T, Hirano T. Halosmysin A, a Novel 14-Membered Macrodiolide Isolated from the Marine-Algae-Derived Fungus Halosphaeriaceae sp. Mar Drugs 2020; 18:E320. [PMID: 32570727 PMCID: PMC7344848 DOI: 10.3390/md18060320] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 06/15/2020] [Accepted: 06/16/2020] [Indexed: 12/11/2022] Open
Abstract
Halosmysin A, a new 14-membered macrodiolide with an unprecedented skeleton, was isolated from the fungus Halosphaeriaceae sp. OUPS-135D-4, which, in turn, was obtained from the marine algae Sargassum thunbergii. The chemical structure of the macrodiolide was elucidated using 1D and 2D NMR, as well as high resolution fast atom bombardment mass (HRFABMS) spectral analysis. The absolute stereochemistry was determined via chemical derivatization and comparison with a known compound, (6R,11R,12R,14R)-colletodiol. Additionally, halosmysin A was shown to be very potent against murine P388 leukemia, human HL-60 leukemia, and murine L1210 leukemia cell lines, with IC50 values ranging from 2.2 ± 3.1 to 11.7 ± 2.8 μM.
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Affiliation(s)
- Takeshi Yamada
- Department of Medicinal Molecular Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1, Nasahara, Takatsuki, Osaka 569-1094, Japan; (H.K.); (M.K.); (T.K.); (T.H.)
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6
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Warryn L, Dangy JP, Gersbach P, Gehringer M, Schäfer A, Ruf MT, Ruggli N, Altmann KH, Pluschke G. Development of an ELISA for the quantification of mycolactone, the cytotoxic macrolide toxin of Mycobacterium ulcerans. PLoS Negl Trop Dis 2020; 14:e0008357. [PMID: 32589646 PMCID: PMC7347236 DOI: 10.1371/journal.pntd.0008357] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Revised: 07/09/2020] [Accepted: 05/04/2020] [Indexed: 01/04/2023] Open
Abstract
Mycolactones, macrolide cytotoxins, are key virulence factors of Mycobacterium ulcerans, the etiological agent of the chronic necrotizing skin disease Buruli ulcer. There is urgent need for a simple point-of-care laboratory test for Buruli ulcer and mycolactone represents a promising target for the development of an immunological assay. However, for a long time, all efforts to generate mycolactone-specific antibodies have failed. By using a protein conjugate of a truncated non-toxic synthetic mycolactone derivative, we recently described generation of a set of mycolactone-specific monoclonal antibodies. Using the first mycolactone-specific monoclonal antibodies that we have described before, we were able to develop an antigen competition assay that detects mycolactones. By the systematic selection of a capturing antibody and a reporter molecule, and the optimization of assay conditions, we developed an ELISA that detects common natural variants of mycolactone with a limit of detection in the low nanomolar range. The mycolactone-specific ELISA described here will be a very useful tool for research on the biology of this macrolide toxin. After conversion into a simple point-of-care test format, the competition assay may have great potential as laboratory assay for both the diagnosis of Buruli ulcer and for the monitoring of treatment efficacy.
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Affiliation(s)
- Louisa Warryn
- Swiss Tropical and Public Health Institute, Basel, Switzerland
- University of Basel, Basel, Switzerland
| | - Jean-Pierre Dangy
- Swiss Tropical and Public Health Institute, Basel, Switzerland
- University of Basel, Basel, Switzerland
| | - Philipp Gersbach
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical Sciences, Swiss Federal Institute of Technology (ETH) Zürich, Zürich, Switzerland
| | - Matthias Gehringer
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical Sciences, Swiss Federal Institute of Technology (ETH) Zürich, Zürich, Switzerland
| | - Anja Schäfer
- Swiss Tropical and Public Health Institute, Basel, Switzerland
- University of Basel, Basel, Switzerland
| | - Marie-Thérèse Ruf
- Swiss Tropical and Public Health Institute, Basel, Switzerland
- University of Basel, Basel, Switzerland
| | - Nicolas Ruggli
- The Institute of Virology and Immunology IVI, Mittelhäusern, Switzerland
| | - Karl-Heinz Altmann
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical Sciences, Swiss Federal Institute of Technology (ETH) Zürich, Zürich, Switzerland
| | - Gerd Pluschke
- Swiss Tropical and Public Health Institute, Basel, Switzerland
- University of Basel, Basel, Switzerland
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7
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Shen L, Ai CZ, Song YC, Wang FW, Jiao RH, Zhang AH, Man HZ, Tan RX. Cytotoxic Trichothecene Macrolides Produced by the Endophytic Myrothecium roridum. J Nat Prod 2019; 82:1503-1509. [PMID: 31117520 DOI: 10.1021/acs.jnatprod.8b01034] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Six new macrolides named myrothecines D-G (1-4), 16-hydroxymytoxin B (5), and 14'-dehydrovertisporin (6), including four 10,13-cyclotrichothecane derivatives, in addition to 12 known compounds (7-18), were isolated from three endophytic Myrothecium roridum, IFB-E008, IFB-E009, and IFB-E012. The isolated compounds were characterized by MS, NMR, CD, and single-crystal X-ray crystallography. The isolated macrolides exhibited an antiproliferation effect against chronic myeloid leukemia K562 and colorectal carcinoma SW1116 cell lines. Compounds 1-6 were cytotoxic, with IC50 values ranging between 56 nM and 16 μM. Since slight structural changes led to obvious activity differences, the CoMFA (comparative molecular field analysis) and CoMSIA (comparative molecular similarity indices analysis) methods were then used to explore the 3D QSAR (three-dimensional quantitative structure-activity relationship) of these macrolides. The result showed that the steric, electrostatic, hydrophobic, and H-bond acceptor factors were involved in their cytotoxicity and provided an in-depth understanding of the structure-activity relationships of these metabolites.
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Affiliation(s)
- Li Shen
- Institute of Translational Medicine, Medical College , Yangzhou University , Yangzhou 225001 , People's Republic of China
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases , Yangzhou University , Yangzhou 225001 , People's Republic of China
- Institute of Functional Biomolecules, State Key Laboratory of Pharmaceutical Biotechnology , Nanjing University , Nanjing 210093 , People's Republic of China
- Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine , Yangzhou University , Yangzhou 225009 , People's Republic of China
| | - Chun-Zhi Ai
- Institute for Advanced Study, Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering , Shenzhen University , Shenzhen 518061 , People's Republic of China
| | - Yong-Chun Song
- Institute of Functional Biomolecules, State Key Laboratory of Pharmaceutical Biotechnology , Nanjing University , Nanjing 210093 , People's Republic of China
| | - Feng-Wu Wang
- Institute of Functional Biomolecules, State Key Laboratory of Pharmaceutical Biotechnology , Nanjing University , Nanjing 210093 , People's Republic of China
| | - Rui-Hua Jiao
- Institute of Functional Biomolecules, State Key Laboratory of Pharmaceutical Biotechnology , Nanjing University , Nanjing 210093 , People's Republic of China
| | - Ai-Hua Zhang
- Institute of Functional Biomolecules, State Key Laboratory of Pharmaceutical Biotechnology , Nanjing University , Nanjing 210093 , People's Republic of China
| | - Hui-Zi Man
- Laboratory of Pharmaceutical Resource Discovery, Dalian Institute of Chemical Physics , Chinese Academy of Sciences , Dalian 116023 , People's Republic of China
| | - Ren-Xiang Tan
- Institute of Functional Biomolecules, State Key Laboratory of Pharmaceutical Biotechnology , Nanjing University , Nanjing 210093 , People's Republic of China
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8
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Feng Y, Yu Z, Zhang S, Xue Z, Huang J, Zhang H, Wan X, Chen A, Wang J. Isolation and Characterization of New 16-Membered Macrolides from the aveA3 Gene Replacement Mutant Strain Streptomyces avermitilis TM24 with Acaricidal and Nematicidal Activities. J Agric Food Chem 2019; 67:4782-4792. [PMID: 30973721 DOI: 10.1021/acs.jafc.9b00079] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Polyketides represent an important class of biologically active and structurally diverse compounds found in nature. They are biosynthesized from acyl CoA precursors by polyketide synthases (PKSs). The use of combinatorial biosynthesis to form hybrid PKSs is considered to be an excellent approach for the development of novel polyketides. Here, 10 new 16-membered macrolide compounds were isolated from the broth of the genetically engineered strain Streptomyces avermitilis TM24, in which the PKS gene aveA3 was seamlessly replaced by the milbemycin PKS gene milA3. Their structures were elucidated on the basis of NMR and MS spectroscopic analyses. The acaricidal and nematicidal activities of them against Tetranychus cinnabarinus and Bursaphelenchus xylophilus were tested. The results indicated that compound 1 had potent acaricidal activity against adult mites with an LC50 value of 0.0022 mg L-1, while compounds 5 and 7 possessed potent nematicidal activity with LC50 values of 4.56 and 4.30 mg L-1, respectively.
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Affiliation(s)
- Youling Feng
- Provincial Joint Engineering Laboratory of Biopesticide Preparation, School of Forestry & Biotechnology , Zhejiang Agricultural and Forestry University , Lin'An 311300 , People's Republic of China
| | - Zhen Yu
- Zhejiang Key Laboratory of Antifungal Drugs , Zhejiang Hisun Pharmaceutical Co., Ltd. , Taizhou 318000 , People's Republic of China
| | - Shaoyong Zhang
- Zhejiang Key Laboratory of Antifungal Drugs , Zhejiang Hisun Pharmaceutical Co., Ltd. , Taizhou 318000 , People's Republic of China
| | - Zhenglian Xue
- College of Biochemical Engineering , Anhui Polytechnic University , Wuhu 241000 , People's Republic of China
| | - Jun Huang
- Zhejiang Key Laboratory of Antifungal Drugs , Zhejiang Hisun Pharmaceutical Co., Ltd. , Taizhou 318000 , People's Republic of China
- Zhejiang Makohs Biotech Co., Ltd. , Taizhou 318000 , People's Republic of China
| | - Hui Zhang
- Zhejiang Key Laboratory of Antifungal Drugs , Zhejiang Hisun Pharmaceutical Co., Ltd. , Taizhou 318000 , People's Republic of China
| | - Xu Wan
- Provincial Joint Engineering Laboratory of Biopesticide Preparation, School of Forestry & Biotechnology , Zhejiang Agricultural and Forestry University , Lin'An 311300 , People's Republic of China
| | - Anliang Chen
- Provincial Joint Engineering Laboratory of Biopesticide Preparation, School of Forestry & Biotechnology , Zhejiang Agricultural and Forestry University , Lin'An 311300 , People's Republic of China
| | - Jidong Wang
- Zhejiang Key Laboratory of Antifungal Drugs , Zhejiang Hisun Pharmaceutical Co., Ltd. , Taizhou 318000 , People's Republic of China
- College of Biochemical Engineering , Anhui Polytechnic University , Wuhu 241000 , People's Republic of China
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9
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Kubicek-Sutherland JZ, Vu DM, Anderson AS, Sanchez TC, Converse PJ, Martí-Arbona R, Nuermberger EL, Swanson BI, Mukundan H. Understanding the Significance of Biochemistry in the Storage, Handling, Purification, and Sampling of Amphiphilic Mycolactone. Toxins (Basel) 2019; 11:toxins11040202. [PMID: 30987300 PMCID: PMC6520765 DOI: 10.3390/toxins11040202] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 02/26/2019] [Accepted: 04/01/2019] [Indexed: 12/29/2022] Open
Abstract
Mycolactone, the amphiphilic macrolide toxin secreted by Mycobacterium ulcerans, plays a significant role in the pathology and manifestations of Buruli ulcer (BU). Consequently, it follows that the toxin is a suitable target for the development of diagnostics and therapeutics for this disease. Yet, several challenges have deterred such development. For one, the lipophilic nature of the toxin makes it difficult to handle and store and contributes to variability associated with laboratory experimentation and purification yields. In this manuscript, we have attempted to incorporate our understanding of the lipophilicity of mycolactone in order to define the optimal methods for the storage, handling, and purification of this toxin. We present a systematic correlation of variability associated with measurement techniques (thin-layer chromatography (TLC), mass spectrometry (MS), and UV-Vis spectrometry), storage conditions, choice of solvents, as well as the impact of each of these on toxin function as assessed by cellular cytotoxicity. We also compared natural mycolactone extracted from bacterial culture with synthesized toxins in laboratory (solvents, buffers) and physiologically relevant (serum) matrices. Our results point to the greater stability of mycolactone in organic, as well as detergent-containing, solvents, regardless of the container material (plastic, glass, or silanized tubes). They also highlight the presence of toxin in samples that may be undetectable by any one technique, suggesting that each detection approach captures different configurations of the molecule with varying specificity and sensitivity. Most importantly, our results demonstrate for the very first time that amphiphilic mycolactone associates with host lipoproteins in serum, and that this association will likely impact our ability to study, diagnose, and treat Buruli ulcers in patients.
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Affiliation(s)
| | - Dung M Vu
- Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
| | - Aaron S Anderson
- Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
| | - Timothy C Sanchez
- Bioscience Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
| | - Paul J Converse
- Department of Medicine, Johns Hopkins University Center for Tuberculosis Research, Baltimore, MD 21218, USA.
| | | | - Eric L Nuermberger
- Department of Medicine, Johns Hopkins University Center for Tuberculosis Research, Baltimore, MD 21218, USA.
| | - Basil I Swanson
- Bioscience Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
| | - Harshini Mukundan
- Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
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10
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Prabhu KS, Siveen KS, Kuttikrishnan S, Jochebeth A, Ali TA, Elareer NR, Iskandarani A, Quaiyoom Khan A, Merhi M, Dermime S, El-Elimat T, Oberlies NH, Alali FQ, Steinhoff M, Uddin S. Greensporone A, a Fungal Secondary Metabolite Suppressed Constitutively Activated AKT via ROS Generation and Induced Apoptosis in Leukemic Cell Lines. Biomolecules 2019; 9:biom9040126. [PMID: 30934922 PMCID: PMC6523683 DOI: 10.3390/biom9040126] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Revised: 03/26/2019] [Accepted: 03/27/2019] [Indexed: 12/16/2022] Open
Abstract
Greensporone A is a fungal secondary metabolite that has exhibited potential in vitro for anti-proliferative activity in vitro. We studied the anticancer activity of greensporone A in a panel of leukemic cell lines. Greensporone A-mediated inhibition of proliferation is found to be associated with the induction of apoptotic cell death. Greensporone A treatment of leukemic cells causes inactivation of constitutively activated AKT and its downstream targets, including members GSK3 and FOXO1, and causes downregulation of antiapoptotic genes such as Inhibitor of Apoptosis (IAPs) and Bcl-2. Furthermore, Bax, a proapoptotic member of the Bcl-2 family, was found to be upregulated in leukemic cell lines treated with greensporone A. Interestingly, gene silencing of AKT using AKT specific siRNA suppressed the expression of Bcl-2 with enhanced expression of Bax. Greensporone A-mediated increase in Bax/Bcl-2 ratio causes permeabilization of the mitochondrial membrane leading to the accumulation of cytochrome c in the cytoplasm. Greensporone A-induced cytochrome c accumulation causes the activation of caspase cascade and cleavage of its effector, poly(ADP-ribose) polymerase (PARP), leading to apoptosis. Greensporone A-mediated apoptosis in leukemic cells occurs through the generation of reactive oxygen species (ROS) due to depletion of glutathione (GSH) levels. Finally, greensporone A potentiated the anticancer activity of imatinib in leukemic cells. In summary, our study showed that greensporone A suppressed the growth of leukemic cells via induction of apoptotic cell death. The apoptotic cell death occurs by inhibition of AKT signaling and activation of the intrinsic apoptotic/caspase pathways. These results raise the possibility that greensporone A could be developed as a therapeutic agent for the treatment of leukemia and other hematological malignancies.
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Affiliation(s)
- Kirti S Prabhu
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar.
| | - Kodappully S Siveen
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar.
| | - Shilpa Kuttikrishnan
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar.
| | - Anh Jochebeth
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar.
| | - Tayyiba A Ali
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar.
| | - Noor R Elareer
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar.
| | - Ahmad Iskandarani
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar.
| | - Abdul Quaiyoom Khan
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar.
| | - Maysaloun Merhi
- National Center for Cancer Care and Research, Hamad Medical Corporation, Doha 3050, Qatar.
| | - Said Dermime
- National Center for Cancer Care and Research, Hamad Medical Corporation, Doha 3050, Qatar.
| | - Tamam El-Elimat
- Departent of Medicinal Chemistry and Pharmacognosy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid 22110, Jordan.
| | - Nicholas H Oberlies
- Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, NC 27402, USA.
| | - Feras Q Alali
- Qatar College of Pharmacy, Qatar University, Doha 3050, Qatar.
| | - Martin Steinhoff
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar.
- Department of Dermatology Venereology, Hamad Medical Corporation, Doha 3050, Qatar.
- Weill Cornell-Medicine, Doha 3050, Qatar.
- Weill Cornell University, New York, NY 10065, United States.
| | - Shahab Uddin
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar.
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11
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Taufa T, Singh AJ, Harland CR, Patel V, Jones B, Halafihi TI, Miller JH, Keyzers RA, Northcote PT. Zampanolides B-E from the Marine Sponge Cacospongia mycofijiensis: Potent Cytotoxic Macrolides with Microtubule-Stabilizing Activity. J Nat Prod 2018; 81:2539-2544. [PMID: 30371079 DOI: 10.1021/acs.jnatprod.8b00641] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Four new compounds (2-5) structurally related to the microtubule-stabilizing agent (-)-zampanolide (1) have been isolated from the Tongan marine sponge Cacospongia mycofijiensis. Three of these new structures, zampanolides B-D (2-4), exhibit nanomolar cytotoxicity toward the HL-60 cell line, are antimitotic, and induce in vitro tubulin polymerization at levels comparable to 1. Zampanolide E (5), saturated at C-8/C-9, was significantly less potent and does not stabilize purified tubulin, even at 10-fold higher concentrations. The structural differences across these compounds reveal a plasticity of the zampanolide pharmacophore. While unsaturation is required at Δ8, the configuration of this alkene and those of Δ4 and Δ4' have little effect on tubulin polymerization. The first natural co-occurrence of 1 and (-)-dactylolide (6) from the same sponge extract is also noted.
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Affiliation(s)
- Taitusi Taufa
- School of Chemical and Physical Sciences , Victoria University of Wellington , Wellington 6012 , New Zealand
- Centre for Biodiscovery , Victoria University of Wellington , Wellington 6012 , New Zealand
| | - A Jonathan Singh
- Centre for Biodiscovery , Victoria University of Wellington , Wellington 6012 , New Zealand
- Ferrier Research Institute , Victoria University of Wellington , Wellington 6012 , New Zealand
| | - Chloe R Harland
- School of Chemical and Physical Sciences , Victoria University of Wellington , Wellington 6012 , New Zealand
- Centre for Biodiscovery , Victoria University of Wellington , Wellington 6012 , New Zealand
| | - Vimal Patel
- Centre for Biodiscovery , Victoria University of Wellington , Wellington 6012 , New Zealand
- School of Biological Sciences , Victoria University of Wellington , Wellington 6012 , New Zealand
| | - Ben Jones
- Centre for Biodiscovery , Victoria University of Wellington , Wellington 6012 , New Zealand
- School of Biological Sciences , Victoria University of Wellington , Wellington 6012 , New Zealand
| | | | - John H Miller
- Centre for Biodiscovery , Victoria University of Wellington , Wellington 6012 , New Zealand
- School of Biological Sciences , Victoria University of Wellington , Wellington 6012 , New Zealand
| | - Robert A Keyzers
- School of Chemical and Physical Sciences , Victoria University of Wellington , Wellington 6012 , New Zealand
- Centre for Biodiscovery , Victoria University of Wellington , Wellington 6012 , New Zealand
| | - Peter T Northcote
- Centre for Biodiscovery , Victoria University of Wellington , Wellington 6012 , New Zealand
- Ferrier Research Institute , Victoria University of Wellington , Wellington 6012 , New Zealand
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12
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Hong SW, Singh AJ, Patel V, Russell ER, Field JJ, Miller JH, Northcote PT. Peloruside E (22-Norpeloruside A), a Pelorusane Macrolide from the New Zealand Marine Sponge Mycale hentscheli, Retains Microtubule-Stabilizing Properties. J Nat Prod 2018; 81:2125-2128. [PMID: 30188708 DOI: 10.1021/acs.jnatprod.8b00557] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A new peloruside congener, peloruside E (5), has been isolated in sub-milligram quantities from a specimen of the New Zealand marine sponge Mycale hentscheli. The structure of 5 differs from the parent compound peloruside A (1) by replacement of the C-10 gem-dimethyl moiety with a monomethyl substituent and represents the first structural deviation in the pelorusane scaffold. Peloruside E (5) is potently antiproliferative (HL-60, IC50 90 nM, cf. 1, 19 nM) and polymerizes purified tubulin, albeit at a rate lower than that of 1.
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Affiliation(s)
- Sa Weon Hong
- School of Chemical and Physical Sciences , Victoria University of Wellington , Wellington 6012 , New Zealand
- Centre for Biodiscovery , Victoria University of Wellington , Wellington 6012 , New Zealand
| | - A Jonathan Singh
- Centre for Biodiscovery , Victoria University of Wellington , Wellington 6012 , New Zealand
- Ferrier Research Institute , Victoria University of Wellington , Wellington 6012 , New Zealand
| | - Vimal Patel
- Centre for Biodiscovery , Victoria University of Wellington , Wellington 6012 , New Zealand
- School of Biological Sciences , Victoria University of Wellington , Wellington 6012 , New Zealand
| | - Euan R Russell
- Centre for Biodiscovery , Victoria University of Wellington , Wellington 6012 , New Zealand
- School of Biological Sciences , Victoria University of Wellington , Wellington 6012 , New Zealand
| | - Jessica J Field
- Centre for Biodiscovery , Victoria University of Wellington , Wellington 6012 , New Zealand
- School of Biological Sciences , Victoria University of Wellington , Wellington 6012 , New Zealand
| | - John H Miller
- Centre for Biodiscovery , Victoria University of Wellington , Wellington 6012 , New Zealand
- School of Biological Sciences , Victoria University of Wellington , Wellington 6012 , New Zealand
| | - Peter T Northcote
- Centre for Biodiscovery , Victoria University of Wellington , Wellington 6012 , New Zealand
- Ferrier Research Institute , Victoria University of Wellington , Wellington 6012 , New Zealand
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13
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Buedenbender L, Robertson LP, Lucantoni L, Avery VM, Kurtböke Dİ, Carroll AR. HSQC-TOCSY Fingerprinting-Directed Discovery of Antiplasmodial Polyketides from the Marine Ascidian-Derived Streptomyces sp. (USC-16018). Mar Drugs 2018; 16:md16060189. [PMID: 29849004 PMCID: PMC6025042 DOI: 10.3390/md16060189] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 05/18/2018] [Accepted: 05/22/2018] [Indexed: 12/17/2022] Open
Abstract
Chemical investigations on the fermentation extract obtained from an ascidian-derived Streptomyces sp. (USC-16018) yielded a new ansamycin polyketide, herbimycin G (1), as well as a known macrocyclic polyketide, elaiophylin (2), and four known diketopiperazines (3–6). The structures of the compounds were elucidated based on 1D/2D NMR and MS data. The absolute configuration of 1 was established by comparison of experimental and predicted electronic circular dichroism (ECD) data. Antiplasmodial activities were tested for the natural products against chloroquine sensitive (3D7) and chloroquine resistant (Dd2) Plasmodium falciparum strains; the two polyketides (1–2) demonstrated an inhibition of >75% against both parasite strains and while 2 was highly cytotoxic, herbimycin G (1) showed no cytotoxicity and good predicted water solubility.
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Affiliation(s)
- Larissa Buedenbender
- Environmental Futures Research Institute, School of Environment and Science, Griffith University, Gold Coast Campus, QLD 4222, Australia.
| | - Luke P Robertson
- Environmental Futures Research Institute, School of Environment and Science, Griffith University, Gold Coast Campus, QLD 4222, Australia.
- Griffith Institute for Drug Discovery, Griffith University, Brisbane, QLD 4111, Australia.
| | - Leonardo Lucantoni
- Griffith Institute for Drug Discovery, Griffith University, Brisbane, QLD 4111, Australia.
| | - Vicky M Avery
- Griffith Institute for Drug Discovery, Griffith University, Brisbane, QLD 4111, Australia.
| | - D İpek Kurtböke
- GeneCology Research Centre, Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Maroochydore, QLD 4558, Australia.
| | - Anthony R Carroll
- Environmental Futures Research Institute, School of Environment and Science, Griffith University, Gold Coast Campus, QLD 4222, Australia.
- Griffith Institute for Drug Discovery, Griffith University, Brisbane, QLD 4111, Australia.
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14
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Zhang X, Chen L, Chai W, Lian XY, Zhang Z. A unique indolizinium alkaloid streptopertusacin A and bioactive bafilomycins from marine-derived Streptomyces sp. HZP-2216E. Phytochemistry 2017; 144:119-126. [PMID: 28923323 DOI: 10.1016/j.phytochem.2017.09.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 09/09/2017] [Accepted: 09/12/2017] [Indexed: 06/07/2023]
Abstract
Streptopertusacin A, a unique indolizinium alkaloid existing as a zwitterion, and six bafilomycins including two previously undescribed ones of 21,22-en-bafilomycin D and 21,22-en-9-hydroxybafilomycin D were isolated from a culture of the seaweed-derived Streptomyces sp. HZP-2216E. Structures of these isolated compounds were determined based on extensive NMR spectroscopic analyses, HRESIMS and MS-MS data. The stereochemical assignments were achieved by NOE information, chemical degradation, Marfey's method, and electronic circular dichroism (ECD) calculation. Streptopertusacin A is the first example of this type of indolizinium alkaloid from microorganisms and showed moderate activity against the growth of methicillin-resistant Staphylococcus aureus (MRSA). 21,22-en-bafilomycin D and 21,22-en-9-hydroxybafilomycin D had potent activities in inhibiting the proliferation of glioma cells and the growth of MRSA.
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Affiliation(s)
- Xiufang Zhang
- Ocean College, Zhoushan Campus, Zhejiang University, Zhoushan 316021, China
| | - Lu Chen
- Ocean College, Zhoushan Campus, Zhejiang University, Zhoushan 316021, China
| | - Weiyun Chai
- Ocean College, Zhoushan Campus, Zhejiang University, Zhoushan 316021, China
| | - Xiao-Yuan Lian
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China.
| | - Zhizhen Zhang
- Ocean College, Zhoushan Campus, Zhejiang University, Zhoushan 316021, China.
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15
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Zhang Z, Chen L, Zhang X, Liang Y, Anjum K, Chen L, Lian XY. Bioactive Bafilomycins and a New N-Arylpyrazinone Derivative from Marine-derived Streptomyces sp. HZP-2216E. Planta Med 2017; 83:1405-1411. [PMID: 28571080 DOI: 10.1055/s-0043-111897] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A MeOH extract prepared from culture of an actinomycete Streptomyces sp. HZP-2216E isolated from marine green algae Ulva pertusa was found to significantly inhibit proliferation of human glioma cells. Two different media were applied to culture this marine actinomycete, which produced two new compounds of 23-O-butyrylbafilomycin D and streptoarylpyrazinone A, together with known bafilomycin D, 9-hydroxybafilomycin D, and bafilomycin A1. Structures of new compounds were determined by extensive NMR spectroscopic analyses and HRESIMS data. Bioactive assay indicated that all isolated bafilomycins significantly inhibited the proliferation of different glioma cell lines and the growth of methicillin-resistant Staphylococcus aureus with 23-O-butyrylbafilomycin D as the most active compound. Streptoarylpyrazinone A is a new N-arylpyrazinone derivative existing as a zwitterion, and this type of compounds was rarely found from natural resources.
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Affiliation(s)
| | - Lu Chen
- Ocean College, Zhejiang University, Zhoushan, China
| | | | - Ying Liang
- Ocean College, Zhejiang University, Zhoushan, China
| | - Komal Anjum
- Ocean College, Zhejiang University, Zhoushan, China
| | - Lei Chen
- Ocean College, Zhejiang University, Zhoushan, China
| | - Xiao-Yuan Lian
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
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16
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Webley WC, Hahn DL. Infection-mediated asthma: etiology, mechanisms and treatment options, with focus on Chlamydia pneumoniae and macrolides. Respir Res 2017; 18:98. [PMID: 28526018 PMCID: PMC5437656 DOI: 10.1186/s12931-017-0584-z] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 05/15/2017] [Indexed: 12/30/2022] Open
Abstract
Asthma is a chronic respiratory disease characterized by reversible airway obstruction and airway hyperresponsiveness to non-specific bronchoconstriction agonists as the primary underlying pathophysiology. The worldwide incidence of asthma has increased dramatically in the last 40 years. According to World Health Organization (WHO) estimates, over 300 million children and adults worldwide currently suffer from this incurable disease and 255,000 die from the disease each year. It is now well accepted that asthma is a heterogeneous syndrome and many clinical subtypes have been described. Viral infections such as respiratory syncytial virus (RSV) and human rhinovirus (hRV) have been implicated in asthma exacerbation in children because of their ability to cause severe airway inflammation and wheezing. Infections with atypical bacteria also appear to play a role in the induction and exacerbation of asthma in both children and adults. Recent studies confirm the existence of an infectious asthma etiology mediated by Chlamydia pneumoniae (CP) and possibly by other viral, bacterial and fungal microbes. It is also likely that early-life infections with microbes such as CP could lead to alterations in the lung microbiome that significantly affect asthma risk and treatment outcomes. These infectious microbes may exacerbate the symptoms of established chronic asthma and may even contribute to the initial development of the clinical onset of the disease. It is now becoming more widely accepted that patterns of airway inflammation differ based on the trigger responsible for asthma initiation and exacerbation. Therefore, a better understanding of asthma subtypes is now being explored more aggressively, not only to decipher pathophysiologic mechanisms but also to select treatment and guide prognoses. This review will explore infection-mediated asthma with special emphasis on the protean manifestations of CP lung infection, clinical characteristics of infection-mediated asthma, mechanisms involved and antibiotic treatment outcomes.
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Affiliation(s)
- Wilmore C. Webley
- University of Massachusetts Amherst, 240 Thatcher Rd. Life Science Laboratory Building N229, Amherst, MA 01003 USA
| | - David L. Hahn
- University of Wisconsin School of Medicine and Public Health, 1100 Delaplaine Court, Madison, WI 53715 USA
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17
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Stierle AA, Stierle DB, Decato D, Priestley ND, Alverson JB, Hoody J, McGrath K, Klepacki D. The Berkeleylactones, Antibiotic Macrolides from Fungal Coculture. J Nat Prod 2017; 80:1150-1160. [PMID: 28326781 PMCID: PMC5467647 DOI: 10.1021/acs.jnatprod.7b00133] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
A carefully timed coculture fermentation of Penicillium fuscum and P. camembertii/clavigerum yielded eight new 16-membered-ring macrolides, berkeleylactones A-H (1, 4, 6-9, 12, 13), as well as the known antibiotic macrolide A26771B (5), patulin, and citrinin. There was no evidence of the production of the berkeleylactones or A26771B (5) by either fungus when grown as axenic cultures. The structures were deduced from analyses of spectral data, and the absolute configurations of compounds 1 and 9 were determined by single-crystal X-ray crystallography. Berkeleylactone A (1) exhibited the most potent antimicrobial activity of the macrolide series, with low micromolar activity (MIC = 1-2 μg/mL) against four MRSA strains, as well as Bacillus anthracis, Streptococcus pyogenes, Candida albicans, and Candida glabrata. Mode of action studies have shown that, unlike other macrolide antibiotics, berkeleylactone A (1) does not inhibit protein synthesis nor target the ribosome, which suggests a novel mode of action for its antibiotic activity.
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Affiliation(s)
- Andrea A. Stierle
- Department of Biomedical and Pharmaceutical Sciences,
University of Montana, Missoula, Montana 59812, United States
| | - Donald B. Stierle
- Department of Biomedical and Pharmaceutical Sciences,
University of Montana, Missoula, Montana 59812, United States
| | - Daniel Decato
- Department of Chemistry and Biochemistry, University of
Montana, Missoula, Montana 59812, United States
| | - Nigel D. Priestley
- Department of Chemistry and Biochemistry, University of
Montana, Missoula, Montana 59812, United States
| | - Jeremy B. Alverson
- Department of Chemistry and Biochemistry, University of
Montana, Missoula, Montana 59812, United States
| | - John Hoody
- Department of Chemistry and Biochemistry, University of
Montana, Missoula, Montana 59812, United States
| | - Kelly McGrath
- Department of Biomedical and Pharmaceutical Sciences,
University of Montana, Missoula, Montana 59812, United States
| | - Dorota Klepacki
- Center for Biomolecular Sciences, College of Pharmacy,
University of Illinois at Chicago, Chicago, Illinois 60607, United States
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18
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Li JS, Zhang H, Zhang SY, Wang HY, Zhang J, Chen AL, Wang JD, Xiang WS. New macrocyclic lactones with acaricidal and nematocidal activities from a genetically engineered strain Streptomyces bingchenggensis BCJ60. J Asian Nat Prod Res 2017; 19:339-346. [PMID: 27589571 DOI: 10.1080/10286020.2016.1211641] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 07/07/2016] [Indexed: 06/06/2023]
Abstract
Two new macrocyclic lactones, 4,25-diethyl-4,25-demethyl-milbemycin β3 (1) and 27-formaldehyde-milbemycin β14 (2), were isolated from a genetically engineered strain Streptomyces bingchenggensis BCJ60. Their structures were determined on the basis of spectroscopic analysis, including 1D and 2D NMR techniques as well as ESI-MS and comparison with data from the literature. The acaricidal and nematocidal capacities of compounds 1 and 2 were evaluated against Tetranychus cinnabarinus and Bursaphelenchus xylophilus, respectively. The results showed that the two new macrocyclic lactones 1 and 2 possessed potent acaricidal and nematocidal activities.
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Affiliation(s)
- Jian-Song Li
- a Life Science and Biotechnology Research Center , School of Life Science, Northeast Agricultural University , Harbin 150030 , China
| | - Hui Zhang
- c Department of New Drug Screening , Zhejiang Hisun Pharmaceutical Co., Ltd , Taizhou 318000 , China
| | - Shao-Yong Zhang
- b Provincial Joint Engineering Laboratory of Biopesticide Preparation, School of Forestry & Biotechnology , Zhejiang Agricultural and Forestry University , Lin'An 311300 , China
| | - Hai-Yan Wang
- a Life Science and Biotechnology Research Center , School of Life Science, Northeast Agricultural University , Harbin 150030 , China
| | - Ji Zhang
- a Life Science and Biotechnology Research Center , School of Life Science, Northeast Agricultural University , Harbin 150030 , China
| | - An-Liang Chen
- b Provincial Joint Engineering Laboratory of Biopesticide Preparation, School of Forestry & Biotechnology , Zhejiang Agricultural and Forestry University , Lin'An 311300 , China
| | - Ji-Dong Wang
- b Provincial Joint Engineering Laboratory of Biopesticide Preparation, School of Forestry & Biotechnology , Zhejiang Agricultural and Forestry University , Lin'An 311300 , China
- c Department of New Drug Screening , Zhejiang Hisun Pharmaceutical Co., Ltd , Taizhou 318000 , China
| | - Wen-Sheng Xiang
- a Life Science and Biotechnology Research Center , School of Life Science, Northeast Agricultural University , Harbin 150030 , China
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19
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Wan X, Zhang SY, Zhang H, Zhai J, Huang J, Chen AL, Wang JD. Two new tenvermectins from a genetically engineered strain Streptomyces avermitilis MHJ1011. J Asian Nat Prod Res 2017; 19:327-332. [PMID: 27329378 DOI: 10.1080/10286020.2016.1197911] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 05/31/2016] [Indexed: 06/06/2023]
Abstract
Two new tenvermectins, tenvermectins C (1) and D (2), were isolated from Streptomyces avermitilis MHJ1011. Their structures were determined by extensive spectroscopic analysis and by comparison with a related known compound, tenvermectin A. Compounds 1 and 2 exhibited potent nematocidal and acaricidal activities against Bursaphelenchus xylophilus and Tetranychus cinnabarinus.
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Affiliation(s)
- Xu Wan
- a Provincial Joint Engineering Laboratory of Biopesticide Preparation , School of Forestry & Biotechnology, Zhejiang Agricultural and Forestry University , Lin'An 311300 , China
| | - Shao-Yong Zhang
- a Provincial Joint Engineering Laboratory of Biopesticide Preparation , School of Forestry & Biotechnology, Zhejiang Agricultural and Forestry University , Lin'An 311300 , China
| | - Hui Zhang
- b Department of New Drug Screening , Zhejiang Hisun Pharmaceutical Co., Ltd. , Taizhou 318000 , China
| | - Jun Zhai
- a Provincial Joint Engineering Laboratory of Biopesticide Preparation , School of Forestry & Biotechnology, Zhejiang Agricultural and Forestry University , Lin'An 311300 , China
| | - Jun Huang
- b Department of New Drug Screening , Zhejiang Hisun Pharmaceutical Co., Ltd. , Taizhou 318000 , China
| | - An-Liang Chen
- a Provincial Joint Engineering Laboratory of Biopesticide Preparation , School of Forestry & Biotechnology, Zhejiang Agricultural and Forestry University , Lin'An 311300 , China
| | - Ji-Dong Wang
- a Provincial Joint Engineering Laboratory of Biopesticide Preparation , School of Forestry & Biotechnology, Zhejiang Agricultural and Forestry University , Lin'An 311300 , China
- b Department of New Drug Screening , Zhejiang Hisun Pharmaceutical Co., Ltd. , Taizhou 318000 , China
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20
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Wright AE, Roberts JC, Guzmán EA, Pitts TP, Pomponi SA, Reed JK. Analogues of the Potent Antitumor Compound Leiodermatolide from a Deep-Water Sponge of the Genus Leiodermatium. J Nat Prod 2017; 80:735-739. [PMID: 28135095 PMCID: PMC8327308 DOI: 10.1021/acs.jnatprod.6b01140] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Two new analogues of the potent antitumor compound leiodermatolide, which we call leiodermatolides B and C, have been isolated from specimens of a deep-water sponge of the genus Leiodermatium collected off Florida. The compounds were purified using standard chromatographic methods, and the structures defined through interpretation of the HRMS and 1D and 2D NMR data. Leiodermatolide B (2) lacks the C-21 hydroxy group found in leiodermatolide and has equal potency as the parent compound, providing a simpler analogue for possible clinical development. It inhibits the proliferation of the AsPC-1 human pancreatic adenocarcinoma cell line with an IC50 of 43 nM. Leiodermatolide C (3) has a modified macrolide ring and is over 85-fold less potent with an IC50 of 3.7 μM against the same cell line. These compounds add to the knowledge of the pharmacophore of this class of potent antitumor agents.
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Affiliation(s)
- Amy E. Wright
- To whom correspondence should be addressed. ; Phone: 772-242-2459
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21
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Braña AF, Sarmiento-Vizcaíno A, Pérez-Victoria I, Otero L, Fernández J, Palacios JJ, Martín J, de la Cruz M, Díaz C, Vicente F, Reyes F, García LA, Blanco G. Branimycins B and C, Antibiotics Produced by the Abyssal Actinobacterium Pseudonocardia carboxydivorans M-227. J Nat Prod 2017; 80:569-573. [PMID: 28169531 DOI: 10.1021/acs.jnatprod.6b01107] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Two new antibiotics, branimycins B (2) and C (3), were produced by fermentation of the abyssal actinobacterium Pseudonocardia carboxydivorans M-227, isolated from deep seawater of the Avilés submarine Canyon. Their structures were elucidated by HRMS and NMR analyses. These compounds exhibit antibacterial activities against a panel of Gram-positive bacteria, including Corynebacterium urealyticum, Clostridium perfringens, and Micrococcus luteus, and against the Gram-negative bacterium Neisseria meningitidis. Additionally, branimycin B displayed moderate antibacterial activity against other Gram-negative bacteria such as Bacteroides fragilis, Haemophilus influenzae, and Escherichia coli, and branimycin C against the Gram-positive Enterococcus faecalis and methicillin-sensitive and methicillin-resistant Staphylococcus aureus.
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Affiliation(s)
- Alfredo F Braña
- Departamento de Biología Funcional, Área de Microbiología, e Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo , 33006 Oviedo, Spain
| | - Aida Sarmiento-Vizcaíno
- Departamento de Biología Funcional, Área de Microbiología, e Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo , 33006 Oviedo, Spain
| | - Ignacio Pérez-Victoria
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Avenida del Conocimiento 34, Parque Tecnológico de Ciencias de la Salud , E-18016 Granada, Spain
| | - Luis Otero
- Servicio de Microbiología, Hospital de Cabueñes , 33394 Gijón, Spain
| | - Jonathan Fernández
- Servicio de Microbiología, Hospital Universitario Central de Asturias (HUCA) , 33011 Oviedo, Spain
| | - Juan José Palacios
- Servicio de Microbiología, Hospital Universitario Central de Asturias (HUCA) , 33011 Oviedo, Spain
| | - Jesús Martín
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Avenida del Conocimiento 34, Parque Tecnológico de Ciencias de la Salud , E-18016 Granada, Spain
| | - Mercedes de la Cruz
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Avenida del Conocimiento 34, Parque Tecnológico de Ciencias de la Salud , E-18016 Granada, Spain
| | - Caridad Díaz
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Avenida del Conocimiento 34, Parque Tecnológico de Ciencias de la Salud , E-18016 Granada, Spain
| | - Francisca Vicente
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Avenida del Conocimiento 34, Parque Tecnológico de Ciencias de la Salud , E-18016 Granada, Spain
| | - Fernando Reyes
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Avenida del Conocimiento 34, Parque Tecnológico de Ciencias de la Salud , E-18016 Granada, Spain
| | - Luis A García
- Departamento de Ingeniería Química y Tecnología del Medio Ambiente, Área de Ingeniería Química, Universidad de Oviedo , 33006 Oviedo, Spain
| | - Gloria Blanco
- Departamento de Biología Funcional, Área de Microbiología, e Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo , 33006 Oviedo, Spain
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22
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Seetharamsingh B, Ganesh R, Reddy DS. Determination of the Absolute Configuration of Gliomasolide D through Total Syntheses of the C-17 Epimers. J Nat Prod 2017; 80:560-564. [PMID: 28177243 DOI: 10.1021/acs.jnatprod.6b00926] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The absolute configuration at C-17, the carbon bearing the distal hydroxy group of the 14-membered natural product gliomasolide D, was assigned as R by comparison of 13C NMR shifts and specific rotation values of the epimers at C-17. The first total synthesis of gliomasolide D along with its C-17 epimer, regioselective macrocyclization (18 membered vs 14 membered), and regioselective Wacker oxidation are highlights of the present work.
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Affiliation(s)
- B Seetharamsingh
- CSIR-National Chemical Laboratory, Division of Organic Chemistry , Dr. Homi Bhabha Road, Pune, 411008, India
- Academy of Scientific and Innovative Research (AcSIR) , New Delhi, 110025, India
| | - Routholla Ganesh
- CSIR-National Chemical Laboratory, Division of Organic Chemistry , Dr. Homi Bhabha Road, Pune, 411008, India
| | - D Srinivasa Reddy
- CSIR-National Chemical Laboratory, Division of Organic Chemistry , Dr. Homi Bhabha Road, Pune, 411008, India
- Academy of Scientific and Innovative Research (AcSIR) , New Delhi, 110025, India
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23
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Tano MB, Dassi C, Mosi L, Koussémon M, Bonfoh B. Molecular Characterization of Mycolactone Producing Mycobacteria from Aquatic Environments in Buruli Ulcer Non-Endemic Areas in Côte d'Ivoire. Int J Environ Res Public Health 2017; 14:ijerph14020178. [PMID: 28208653 PMCID: PMC5334732 DOI: 10.3390/ijerph14020178] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 01/18/2017] [Accepted: 01/23/2017] [Indexed: 12/04/2022]
Abstract
Non-tuberculous mycobacteria (NTM), particularly mycolactone producing mycobacteria (MPM), are bacteria found in aquatic environments causing skin diseases in humans like Buruli ulcer (BU). Although the causative agent for BU, Mycobacterium ulcerans has been identified and associated with slow-moving water bodies, the real transmission route is still unknown. This study aimed to characterize MPMs from environmental aquatic samples collected in a BU non-endemic community, Adiopodoumé, in Côte d’Ivoire. Sixty samples were collected in four types of matrices (plant biofilms, water filtrate residues, plant detritus and soils) from three water bodies frequently used by the population. Using conventional polymerase chain reaction (PCR), MPMs were screened for the 16S ribosomal RNA (rRNA) mycobacterial gene, the IS2404 insertion sequence, and MPM enoyl reductase (ER) gene. Variable Number Tandem Repeat (VNTR) typing with loci 6, 19, mycobacterial interspersed repetitive unit 1 (MIRU1) and sequence type 1(ST1) was performed to discriminate between different MPMs. Our findings showed 66.7%, 57.5% and 43.5% of positivity respectively for 16S rRNA, IS2404 and ER. MPM discrimination using VNTR typing did not show any positivity and therefore did not allow precise MPM distinction. Nevertheless, the observed contamination of some water bodies in a BU non-endemic community by MPMs suggests the possibility of pathogen dissemination and transmission to humans. These aquatic environments could also serve as reservoirs that should be considered during control and prevention strategies.
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Affiliation(s)
- Marcellin B Tano
- Department of Food Sciences and Technology, Université Nangui Abrogoua, Abidjan, 02 BP 801 Abidjan 01, Côte d'Ivoire.
- Department of Environment and Health, Centre Suisse de Recherches Scientifiques en Côte d'Ivoire (CSRS), Adiopodoumé, 01 BP 1303, Abidjan 01, Côte d'Ivoire.
| | - Christelle Dassi
- Department of Environment and Health, Centre Suisse de Recherches Scientifiques en Côte d'Ivoire (CSRS), Adiopodoumé, 01 BP 1303, Abidjan 01, Côte d'Ivoire.
- UFR Biosciences, Université Félix Houphouët Boigny, Abidjan, 01 BP V 34 Abidjan 01, Côte d'Ivoire.
| | - Lydia Mosi
- Department of Environment and Health, Centre Suisse de Recherches Scientifiques en Côte d'Ivoire (CSRS), Adiopodoumé, 01 BP 1303, Abidjan 01, Côte d'Ivoire.
- Department of Biochemistry, Cell and Molecular Biology, University of Ghana, Legon, P. O. Box LG 54, Legon, Ghana.
- West African Centre for Cell Biology of Infectious Pathogens, University of Ghana, Legon, P. O. Box LG 54, Legon, Ghana.
| | - Marina Koussémon
- Department of Food Sciences and Technology, Université Nangui Abrogoua, Abidjan, 02 BP 801 Abidjan 01, Côte d'Ivoire.
| | - Bassirou Bonfoh
- Department of Environment and Health, Centre Suisse de Recherches Scientifiques en Côte d'Ivoire (CSRS), Adiopodoumé, 01 BP 1303, Abidjan 01, Côte d'Ivoire.
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24
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Wang CX, Ding R, Jiang ST, Tang JS, Hu D, Chen GD, Lin F, Hong K, Yao XS, Gao H. Aldgamycins J-O, 16-Membered Macrolides with a Branched Octose Unit from Streptomycetes sp. and Their Antibacterial Activities. J Nat Prod 2016; 79:2446-2454. [PMID: 27690254 DOI: 10.1021/acs.jnatprod.6b00200] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Six new 16-membered macrolides with a rare branched octose unit, aldgamycins J-O (1-6), along with two known compounds, swalpamycin B (7) and chalcomycin (8), were isolated from Streptomyces sp. HK-2006-1. Their structures were determined by detailed spectroscopic and X-ray crystallographic analysis. Natural products containing branched sugar units are rare. Aldgaropyranose and decarboxylated aldgaropyranose are branched octoses, specifically aldgarose-type branched octose. Until now, only 11 compounds have been reported to contain an aldgarose-type branched octose. The discovery of aldgamycins J-O (1-6) adds new members of this type of natural product. All the compounds (1-8) herein were tested for antimicrobial activities against Gram-positive Staphylococcus aureus 209P, Gram-negative Escherichia coli ATCC0111, and two fungi, Candida albicans FIM709 and Aspergillus niger R330. Most of these compounds showed antibacterial activity against S. aureus. Their preliminary structure-activity relationships are proposed.
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Affiliation(s)
- Chuan-Xi Wang
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University , Guangzhou 510632, People's Republic of China
| | - Rong Ding
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University , Guangzhou 510632, People's Republic of China
| | - Shu-Tai Jiang
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University , Guangzhou 510632, People's Republic of China
| | - Jin-Shan Tang
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University , Guangzhou 510632, People's Republic of China
| | - Dan Hu
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University , Guangzhou 510632, People's Republic of China
| | - Guo-Dong Chen
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University , Guangzhou 510632, People's Republic of China
| | - Feng Lin
- Fujian Key Laboratory of Screening for Novel Microbial Products, Fujian Institute of Microbiology , Fuzhou 350007, People's Republic of China
| | - Kui Hong
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Wuhan University), Ministry of Education, and Wuhan University School of Pharmaceutical Sciences , Wuhan 430071, People's Republic of China
| | - Xin-Sheng Yao
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University , Guangzhou 510632, People's Republic of China
| | - Hao Gao
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University , Guangzhou 510632, People's Republic of China
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25
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Liu S, Dai H, Makhloufi G, Heering C, Janiak C, Hartmann R, Mándi A, Kurtán T, Müller WEG, Kassack MU, Lin W, Liu Z, Proksch P. Cytotoxic 14-Membered Macrolides from a Mangrove-Derived Endophytic Fungus, Pestalotiopsis microspora. J Nat Prod 2016; 79:2332-2340. [PMID: 27556865 DOI: 10.1021/acs.jnatprod.6b00473] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Seven new 14-membered macrolides, pestalotioprolides C (2), D-H (4-8), and 7-O-methylnigrosporolide (3), together with four known analogues, pestalotioprolide B (1), seiricuprolide (9), nigrosporolide (10), and 4,7-dihydroxy-13-tetradeca-2,5,8-trienolide (11), were isolated from the mangrove-derived endophytic fungus Pestalotiopsis microspora. Their structures were elucidated by analysis of NMR and MS data and by comparison with literature data. Single-crystal X-ray diffraction analysis was used to confirm the absolute configurations of 1, 2, and 10, while Mosher's method and the TDDFT-ECD approach were applied to determine the absolute configurations of 5 and 6. Compounds 3-6 showed significant cytotoxicity against the murine lymphoma cell line L5178Y with IC50 values of 0.7, 5.6, 3.4, and 3.9 μM, respectively, while compound 5 showed potent activity against the human ovarian cancer cell line A2780 with an IC50 value of 1.2 μM. Structure-activity relationships are discussed. Coculture of P. microspora with Streptomyces lividans caused a roughly 10-fold enhanced accumulation of compounds 5 and 6 compared to axenic fungal control.
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Affiliation(s)
| | - Haofu Dai
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences , Haikou 571101, China
| | | | | | | | - Rudolf Hartmann
- Institute of Complex Systems: Strukturbiochemie, Forschungszentrum Juelich , Wilhelm-Johnen-Straße, 52428 Juelich, Germany
| | - Attila Mándi
- Department of Organic Chemistry, University of Debrecen , P.O. Box 400, H-4002 Debrecen, Hungary
| | - Tibor Kurtán
- Department of Organic Chemistry, University of Debrecen , P.O. Box 400, H-4002 Debrecen, Hungary
| | - Werner E G Müller
- Institute of Physiological Chemistry, Universitätsmedizin der Johannes Gutenberg-Universität Mainz , Duesbergweg 6, 55128 Mainz, Germany
| | | | - Wenhan Lin
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University , Beijing 100191, China
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26
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Horbal L, Luzhetskyy A. Dual control system - A novel scaffolding architecture of an inducible regulatory device for the precise regulation of gene expression. Metab Eng 2016; 37:11-23. [PMID: 27040671 PMCID: PMC4915818 DOI: 10.1016/j.ymben.2016.03.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 03/29/2016] [Accepted: 03/30/2016] [Indexed: 12/17/2022]
Abstract
Here, we present a novel scaffolding architecture of an inducible regulatory device. This dual control system is completely silent in the off stage and is coupled to the regulation of gene expression at both the transcriptional and translational levels. This system also functions as an AND gate. We demonstrated the effectiveness of the cumate-riboswitch dual control system for the control of pamamycin production in Streptomyces albus. Placing the cre recombinase gene under the control of this system permitted the construction of synthetic devices with non-volatile memory that sense the signal and respond by altering DNA at the chromosomal level, thereby producing changes that are heritable. In addition, we present a library of synthetic inducible promoters based on the previously described cumate switch. With only one inducer and different promoters, we demonstrate that simultaneous modulation of the expression of several genes to different levels in various operons is possible. Because all modules of the AND gates are functional in bacteria other than Streptomyces, we anticipate that these regulatory devices can be used to control gene expression in other Actinobacteria. The features described in this study make these systems promising tools for metabolic engineering and biotechnology in Actinobacteria.
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Affiliation(s)
- L Horbal
- Helmholtz Institute for Pharmaceutical Research, 66123 Saarbrücken, Germany; University of Saarland, Pharmaceutical Biotechnology, 66123 Saarbrucken, Germany
| | - A Luzhetskyy
- Helmholtz Institute for Pharmaceutical Research, 66123 Saarbrücken, Germany; University of Saarland, Pharmaceutical Biotechnology, 66123 Saarbrucken, Germany.
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27
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Qian S, Shah AK, Head SA, Liu JO, Jin Z. Insights into the structure-activity relationship of the anticancer compound ZJ-101, a derivative of marine natural product superstolide A: A critical role played by the conjugated trienyl lactone moiety. Bioorg Med Chem Lett 2016; 26:3411-3. [PMID: 27374243 PMCID: PMC5013146 DOI: 10.1016/j.bmcl.2016.06.057] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 06/20/2016] [Accepted: 06/21/2016] [Indexed: 11/19/2022]
Abstract
Compound ZJ-101, a structurally simplified analog of the marine natural product superstolide A, was previously developed in our laboratory. In the subsequent structure-activity relationship study, two new analogs, ZJ-105 and ZJ-106, were designed and synthesized to probe the importance of the conjugated trienyl lactone moiety of the molecule by replacing the C2-C3 double bond in ZJ-101 with a single bond and switching the geometry of the C4-C5 double bond in ZJ-101 from Z to E, respectively. Biological evaluation showed that ZJ-105 completely loses antiproliferative activity whereas ZJ-106 is significantly less active against cancer cells in vitro than ZJ-101, suggesting that the conjugated trienyl lactone moiety of the molecule is critical for its anticancer activity.
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Affiliation(s)
- Shan Qian
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, The University of Iowa, Iowa City, IA 52242, USA
| | - Aashay K Shah
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, The University of Iowa, Iowa City, IA 52242, USA
| | - Sarah A Head
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, 725 North Wolfe St., Baltimore, MD 21205, USA
| | - Jun O Liu
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, 725 North Wolfe St., Baltimore, MD 21205, USA; Department of Onocology, Johns Hopkins University School of Medicine, 725 North Wolfe St., Baltimore, MD 21205, USA
| | - Zhendong Jin
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, The University of Iowa, Iowa City, IA 52242, USA.
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28
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Han Y, Tian E, Xu D, Ma M, Deng Z, Hong K. Halichoblelide D, a New Elaiophylin Derivative with Potent Cytotoxic Activity from Mangrove-Derived Streptomyces sp. 219807. Molecules 2016; 21:molecules21080970. [PMID: 27463707 PMCID: PMC6273579 DOI: 10.3390/molecules21080970] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 07/10/2016] [Accepted: 07/21/2016] [Indexed: 12/03/2022] Open
Abstract
During our search for interesting bioactive secondary metabolites from mangrove actinomycetes, the strain Streptomyces sp. 219807 which produced a high elaiophylin yield of 4486 mg/L was obtained. A new elaiophylin derivative, halichoblelide D (1), along with seven known analogues 2–8 was isolated and identified from the culture broth. Their chemical structures were determined by detailed analysis of 1D and 2D NMR and HRMS data. The absolute configuration of halichoblelide D (1) was confirmed by comparing the CD spectrum with those of the reported analogues. Compounds 1–7 exhibited potent cytotoxic activities against HeLa and MCF-7 cells with IC50 values ranging from 0.19 to 2.12 μM.
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Affiliation(s)
- Ying Han
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China.
| | - Erli Tian
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China.
| | - Dongbo Xu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China.
| | - Min Ma
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China.
| | - Zixin Deng
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China.
| | - Kui Hong
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China.
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29
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Nuzzo G, Gomes BA, Luongo E, Torres MCM, Santos EA, Cutignano A, Pessoa ODL, Costa-Lotufo LV, Fontana A. Dinoflagellate-Related Amphidinolides from the Brazilian Octocoral Stragulum bicolor. J Nat Prod 2016; 79:1881-1885. [PMID: 27400333 DOI: 10.1021/acs.jnatprod.6b00259] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Benthic cnidarians are colonial marine animals that host a rich population of associated and symbiotic microorganisms. In a recent paper we described for the first time the isolation of amphidinolide P (1) from the Brazilian octocoral Stragulum bicolor. Amphidinolides and similar compounds had been previously reported only from dinoflagellates of the genus Amphidinium; thus the presence of 1 in the invertebrate opens intriguing questions on the role and occurrence of these molecules in marine ecosystems. Here we report the identification of four further amphidinolides from the same soft coral, including the known amphidinolide T1 (2) and the new analogues here named amphidinolides C4 (3), B8 (4), and B9 (5). The chemical structures have been elucidated mainly by extensive study of spectroscopic data. Cytotoxic activities of 3 and 4 were evaluated against the colon adenocarcinoma cell line HCT-116.
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Affiliation(s)
- Genoveffa Nuzzo
- CNR, Istituto di Chimica Biomolecolare, Bio-Organic Chemistry Unit , Pozzuoli, Naples, Italy
| | - Bruno A Gomes
- Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará , Fortaleza, CE, Brazil
| | - Elvira Luongo
- CNR, Istituto di Chimica Biomolecolare, Bio-Organic Chemistry Unit , Pozzuoli, Naples, Italy
| | - Maria C M Torres
- Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará , Fortaleza, CE, Brazil
| | - Evelyne A Santos
- Departamento de Fisiologia e Farmacologia, Universidade Federal do Ceará , Fortaleza, 60.430-270, Brazil
| | - Adele Cutignano
- CNR, Istituto di Chimica Biomolecolare, Bio-Organic Chemistry Unit , Pozzuoli, Naples, Italy
| | - Otília D L Pessoa
- Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará , Fortaleza, CE, Brazil
| | - Leticia V Costa-Lotufo
- Departamento de Farmacologia, Instituto de Ciências Biomédicas, Universidade de São Paulo , São Paulo, SP, Brazil
| | - Angelo Fontana
- CNR, Istituto di Chimica Biomolecolare, Bio-Organic Chemistry Unit , Pozzuoli, Naples, Italy
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30
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Lu S, Nishimura S, Ito M, Tsuchida T, Kakeya H. Isolation and Structure Elucidation of Cytotoxic Saccharothriolides D to F from a Rare Actinomycete Saccharothrix sp. and Their Structure-Activity Relationship. J Nat Prod 2016; 79:1891-1895. [PMID: 27332142 DOI: 10.1021/acs.jnatprod.6b00372] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Three new 10-membered macrolides, saccharothriolides D-F (1-3), were isolated from a rare actinomycete, Saccharothrix sp. A1506. The planar structures were determined from analysis of extensive NMR and HR-ESI-MS data, and the absolute configurations were established by ECD spectroscopy analysis. Saccharothriolides D (1) and E (2) were determined to be C-2 epimers of saccharothriolides A (4) and B (5), respectively. Saccharothriolide F (3) was identified to be a demethylated congener of saccharothriolides D (1) and A (4) at the C-2 position. The availability of compounds 1-6 enabled a structure-activity relationship study that revealed the importance of the phenolic hydroxy group at C-2″ and the stereochemistry of C-2 for the inhibition of human fibrosarcoma HT1080 cell growth.
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Affiliation(s)
- Shan Lu
- Department of System Chemotherapy and Molecular Sciences, Division of Bioinformatics and Chemical Genomics, Graduate School of Pharmaceutical Sciences, Kyoto University , Kyoto 606-8501, Japan
| | - Shinichi Nishimura
- Department of System Chemotherapy and Molecular Sciences, Division of Bioinformatics and Chemical Genomics, Graduate School of Pharmaceutical Sciences, Kyoto University , Kyoto 606-8501, Japan
| | - Masashi Ito
- Bioresource Laboratories, MicroBioPharm Japan Co., Ltd. (MBJ) , Iwata, Shizuoka 438-0078, Japan
| | - Toshio Tsuchida
- Bioresource Laboratories, MicroBioPharm Japan Co., Ltd. (MBJ) , Iwata, Shizuoka 438-0078, Japan
| | - Hideaki Kakeya
- Department of System Chemotherapy and Molecular Sciences, Division of Bioinformatics and Chemical Genomics, Graduate School of Pharmaceutical Sciences, Kyoto University , Kyoto 606-8501, Japan
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31
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Liu HX, Liu WZ, Chen YC, Sun ZH, Tan YZ, Li HH, Zhang WM. Cytotoxic trichothecene macrolides from the endophyte fungus Myrothecium roridum. J Asian Nat Prod Res 2016; 18:684-9. [PMID: 26795403 DOI: 10.1080/10286020.2015.1134505] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
A new cytotoxic roridin-type trichothecene macrolide named epiroridin acid (1) and two known compounds epiroridin E (2) and mytoxin B (3) were isolated from the liquid culture of Myrothecium roridum A553, which was isolated from the medicinal plant Pogostemon cablin. The structure of the new macrolide (1) was elucidated by extensive spectroscopic measurements (UV, IR, MS, and 1D and 2D NMR) analyses. All isolated compounds (1-3) were evaluated for their cytotoxic activities against SF-268, MCF-7, NCI-H460, and HepG-2 tumor cell lines. The new compound (1) exhibited well cytotoxicity against the four selected tumor cell lines.
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Affiliation(s)
- Hong-Xin Liu
- a State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology , Guangdong Institute of Microbiology , Guangzhou , China
| | - Wei-Zhen Liu
- a State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology , Guangdong Institute of Microbiology , Guangzhou , China
- b College of Pharmacy, Guangdong Pharmaceutical University , Guangzhou , China
| | - Yu-Chan Chen
- a State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology , Guangdong Institute of Microbiology , Guangzhou , China
| | - Zhang-Hua Sun
- a State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology , Guangdong Institute of Microbiology , Guangzhou , China
| | - Yu-Zhi Tan
- b College of Pharmacy, Guangdong Pharmaceutical University , Guangzhou , China
| | - Hao-Hua Li
- a State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology , Guangdong Institute of Microbiology , Guangzhou , China
| | - Wei-Min Zhang
- a State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology , Guangdong Institute of Microbiology , Guangzhou , China
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32
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Okabe M, Sugita T, Kinoshita K, Koyama K. Macrolides from a Marine-Derived Fungus, Penicillium meleagrinum var. viridiflavum, Showing Synergistic Effects with Fluconazole against Azole-Resistant Candida albicans. J Nat Prod 2016; 79:1208-1212. [PMID: 27014845 DOI: 10.1021/acs.jnatprod.6b00019] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Two new 13-membered macrolides (1, 7), along with known 13-membered macrolides PF1163A, B, D, H, and F (2-6), were isolated from a strain of a marine-derived fungus, Penicillium meleagrinum var. viridiflavum. The structures of 1 and 7 were elucidated from spectroscopic data (NMR, MS, IR). Compounds 1-7 showed synergistic effects with fluconazole against azole-resistant Candida albicans by a checkerboard assay.
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Affiliation(s)
- Miki Okabe
- Department of Pharmacognosy and Phytochemistry and ‡Department of Microbiology, Meiji Pharmaceutical University , 2-522-1 Noshio, Kiyose-shi, Tokyo 204-8588, Japan
| | - Takashi Sugita
- Department of Pharmacognosy and Phytochemistry and ‡Department of Microbiology, Meiji Pharmaceutical University , 2-522-1 Noshio, Kiyose-shi, Tokyo 204-8588, Japan
| | - Kaoru Kinoshita
- Department of Pharmacognosy and Phytochemistry and ‡Department of Microbiology, Meiji Pharmaceutical University , 2-522-1 Noshio, Kiyose-shi, Tokyo 204-8588, Japan
| | - Kiyotaka Koyama
- Department of Pharmacognosy and Phytochemistry and ‡Department of Microbiology, Meiji Pharmaceutical University , 2-522-1 Noshio, Kiyose-shi, Tokyo 204-8588, Japan
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33
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Ding N, Jiang Y, Han L, Chen X, Ma J, Qu X, Mu Y, Liu J, Li L, Jiang C, Huang X. Bafilomycins and Odoriferous Sesquiterpenoids from Streptomyces albolongus Isolated from Elephas maximus Feces. J Nat Prod 2016; 79:799-805. [PMID: 26933756 DOI: 10.1021/acs.jnatprod.5b00827] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
From a fermentation broth of Streptomyces albolongus obtained from Elephas maximus feces, nine bafilomycins (1-9) and seven odoriferous sesquiterpenoids (10-16) were isolated. The structures of the new compounds, including three bafilomycins, 19-methoxybafilomycin C1 amide (1), 21-deoxybafilomycin A1 (2), and 21-deoxybafilomycin A2 (3), and two sesquiterpenoid degradation products, (1β,4β,4aβ,8aα)-4,8a-dimethyloctahydronaphthalene-1,4a(2H)-diol (10) and (1β,4β,4aβ,7α,8aα)-4,8a-dimethyloctahydronaphthalene-1,4a,7(2H)-triol (11), were elucidated by comprehensive spectroscopic data analysis. The cytotoxicity activity against four human cancer cell lines and antimicrobial activities against a panel of bacteria and fungi of all compounds isolated were evaluated. Compounds 1, 7, and 8 were cytotoxic, with IC50 values ranging from 0.54 to 5.02 μM. Compounds 2, 7, 8, and 10 showed strong antifungal activity against Candida parapsilosis, with MIC values of 3.13, 1.56, 1.56, and 3.13 μg/mL respectively.
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Affiliation(s)
- Nan Ding
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University , Shenyang 110819, People's Republic of China
- Laboratory of Metabolic Disease Research and Drug Development, China Medical University , Shenyang 110001, People's Republic of China
| | - Yi Jiang
- Yunnan Institute of Microbiology, Yunnan University , Kunming 650091, People's Republic of China
| | - Li Han
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University , Shenyang 110819, People's Republic of China
| | - Xiu Chen
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University , Shenyang 110819, People's Republic of China
| | - Jian Ma
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University , Shenyang 110819, People's Republic of China
| | - Xiaodan Qu
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University , Shenyang 110819, People's Republic of China
| | - Yu Mu
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University , Shenyang 110819, People's Republic of China
| | - Jiang Liu
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University , Shenyang 110819, People's Republic of China
| | - Liya Li
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University , Shenyang 110819, People's Republic of China
| | - Chenglin Jiang
- Yunnan Institute of Microbiology, Yunnan University , Kunming 650091, People's Republic of China
| | - Xueshi Huang
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University , Shenyang 110819, People's Republic of China
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Sheng Y, Lam PW, Shahab S, Santosa DA, Proteau PJ, Zabriskie TM, Mahmud T. Identification of Elaiophylin Skeletal Variants from the Indonesian Streptomyces sp. ICBB 9297. J Nat Prod 2015; 78:2768-2775. [PMID: 26510047 DOI: 10.1021/acs.jnatprod.5b00752] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Four new elaiophylin macrolides (1-4), together with five known elaiophylins (5-9), have been isolated from cultures of the Indonesian soil bacterium Streptomyces sp. ICBB 9297. The new compounds have macrocyclic skeletons distinct from those of the known dimeric elaiophylins in that one or both of the polyketide chains contain(s) an additional pendant methyl group. Further investigations revealed that 1 and 2 were derived from 3 and 4, respectively, during isolation processes. Compounds 1-3 showed comparable antibacterial activity to elaiophylin against Staphylococcus aureus. However, interestingly, only compounds 1 and 3, which contain a pendant methyl group at C-2, showed activity against Mycobacterium smegmatis, whereas compound 2, which has two pendant methyl groups at C-2 and C-2', and the known elaiophylin analogues (5-7), which lack pendant methyl groups at C-2 and/or C-2', showed no activity. The production of 3 and 4 in strain ICBB 9297 indicates that one of the acyltransferase (AT) domains in the elaiophylin polyketide synthases (PKSs) can recruit both malonyl-CoA and methylmalonyl-CoA as substrates. Bioinformatic analysis of the AT domains of the elaiophylin PKSs revealed that the ela_AT7 domain contains atypical active site amino acid residues, distinct from those conserved in malonyl-CoA- or methylmalonyl-CoA-specific ATs.
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Affiliation(s)
- Yan Sheng
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University , Corvallis, Oregon 97331-3507, United States
| | - Phillip W Lam
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University , Corvallis, Oregon 97331-3507, United States
| | - Salmah Shahab
- Indonesian Center for Biodiversity and Biotechnology , ICBB-Complex, JI. Cilubang Nagrak No. 62, Situgede, Bogor 16115, Indonesia
| | - Dwi Andreas Santosa
- Indonesian Center for Biodiversity and Biotechnology , ICBB-Complex, JI. Cilubang Nagrak No. 62, Situgede, Bogor 16115, Indonesia
- Department of Soil Science and Land Resources, Faculty of Agriculture, Bogor Agricultural University , Bogor, Indonesia
| | - Philip J Proteau
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University , Corvallis, Oregon 97331-3507, United States
| | - T Mark Zabriskie
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University , Corvallis, Oregon 97331-3507, United States
| | - Taifo Mahmud
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University , Corvallis, Oregon 97331-3507, United States
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Abstract
Three new compounds, including two new diterpenoids, named epianhydrocinnzeylanol (1) and cinnacasiol H (2), and one hydroxylasiodiplodin, (3R,4S,6R)-4,6-dihydroxy-de-O-methyllasiodiplodin (3), together with five known diterpenoids (4-8) and two known phenolic glycosides (9-10) were isolated from the barks of Cinnamomum cassia. Their structures were elucidated by extensive spectroscopic analysis and comparison of the chemical shift values with those of related known compounds. The anti-inflammatory activities of the isolates were evaluated on nitric oxide production in lipopolysaccharide-induced BV-2 microglial cells and the compounds showed weak inhibition activities.
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Affiliation(s)
- Shan He
- a State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University , Beijing 100191 , China
| | - Yong Jiang
- a State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University , Beijing 100191 , China
| | - Peng-Fei Tu
- a State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University , Beijing 100191 , China
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Mori S, Williams H, Cagle D, Karanovich K, Horgen FD, Smith R, Watanabe CMH. Macrolactone Nuiapolide, Isolated from a Hawaiian Marine Cyanobacterium, Exhibits Anti-Chemotactic Activity. Mar Drugs 2015; 13:6274-90. [PMID: 26473885 PMCID: PMC4626689 DOI: 10.3390/md13106274] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Revised: 09/25/2015] [Accepted: 09/25/2015] [Indexed: 12/21/2022] Open
Abstract
A new bioactive macrolactone, nuiapolide (1) was identified from a marine cyanobacterium collected off the coast of Niihau, near Lehua Rock. The natural product exhibits anti-chemotactic activity at concentrations as low as 1.3 μM against Jurkat cells, cancerous T lymphocytes, and induces a G2/M phase cell cycle shift. Structural characterization of the natural product revealed the compound to be a 40-membered macrolactone with nine hydroxyl functional groups and a rare tert-butyl carbinol residue.
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Affiliation(s)
- Shogo Mori
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA.
| | - Howard Williams
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA.
| | - Davey Cagle
- Department of Natural Sciences, Hawaii Pacific University, Kaneohe, HI 96744, USA.
| | | | - F David Horgen
- Department of Natural Sciences, Hawaii Pacific University, Kaneohe, HI 96744, USA.
| | - Roger Smith
- Department of Veterinary Pathology, Texas A&M University, College Station, TX 77843, USA.
| | - Coran M H Watanabe
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA.
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Frost JR, Pearson CM, Snaddon TN, Booth RA, Turner RM, Gold J, Shaw DM, Gaunt MJ, Ley SV. Callipeltosides A, B and C: Total Syntheses and Structural Confirmation. Chemistry 2015; 21:13261-77. [PMID: 26230615 PMCID: PMC4583783 DOI: 10.1002/chem.201501877] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Indexed: 12/31/2022]
Abstract
Since their isolation almost 20 years ago, the callipeltosides have been of long standing interest to the synthetic community owing to their unique structural features and inherent biological activity. Herein we present our full research effort that has led to the synthesis of these molecules. Key aspects of our final strategy include 1) synthesis of the C1-C9 pyran core (5) using an AuCl3 -catalysed cyclisation; 2) formation of C10-C22 vinyl iodide (55) by sequential bidirectional Stille reactions and 3) diastereoselective union of these advanced fragments by means of an alkenylzinc addition (d.r.=91:9 at C9). The common callipeltoside aglycon (4) was completed in a further five steps. Following this, all three sugar fragments were appended to provide the entire callipeltoside family. In addition to this, D-configured callipeltose B was synthesised and appended to the callipeltoside aglycon. The (1) H NMR spectrum of this molecule was found to be significantly different to the natural isolate, further supporting our assignment of callipeltoside B (2).
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Affiliation(s)
- James R Frost
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (UK).
| | - Colin M Pearson
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (UK)
| | - Thomas N Snaddon
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (UK)
- Current address: Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN 47405 (USA)
| | - Richard A Booth
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (UK)
| | - Richard M Turner
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (UK)
| | - Johan Gold
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (UK)
| | - David M Shaw
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (UK)
| | - Matthew J Gaunt
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (UK)
| | - Steven V Ley
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (UK).
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Salvador-Reyes LA, Sneed J, Paul VJ, Luesch H. Amantelides A and B, Polyhydroxylated Macrolides with Differential Broad-Spectrum Cytotoxicity from a Guamanian Marine Cyanobacterium. J Nat Prod 2015; 78:1957-1962. [PMID: 26204500 PMCID: PMC4725301 DOI: 10.1021/acs.jnatprod.5b00293] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Cytotoxicity-guided fractionation of a Guamanian cyanobacterial collection yielded the new compounds amantelides A (1) and B (2). These polyketides are characterized by a 40-membered macrolactone ring consisting of a 1,3-diol and contiguous 1,5-diol units and a tert-butyl substituent. Amantelide A (1) displayed potent cytotoxicity with submicromolar IC₅₀ against HT29 colorectal adenocarcinoma and HeLa cervical carcinoma cell lines. Acetylation of the hydroxy group at C-33 in 2 caused a close to 10-fold decrease in potency. Exhaustive acetylation of the hydroxy groups abrogated the antiproliferative activity of amantelide A (1) by 20-67-fold. Further bioactivity assessment of 1 against bacterial pathogens and marine fungi indicated a broad spectrum of bioactivity.
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Affiliation(s)
- Lilibeth A. Salvador-Reyes
- Department of Medicinal Chemistry, University of Florida, 1345 Center Drive, Gainesville, Florida 32610
- Marine Science Institute, University of the Philippines, Velasquez St., UP Diliman, Quezon City 1101
| | - Jennifer Sneed
- Smithsonian Marine Station, 701 Seaway Drive, Fort Pierce, Florida 34949
| | - Valerie J. Paul
- Smithsonian Marine Station, 701 Seaway Drive, Fort Pierce, Florida 34949
| | - Hendrik Luesch
- Department of Medicinal Chemistry, University of Florida, 1345 Center Drive, Gainesville, Florida 32610
- Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida, 1345 Center Drive, Gainesville, Florida 32610
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Cao F, Yang Q, Shao CL, Kong CJ, Zheng JJ, Liu YF, Wang CY. Bioactive 7-Oxabicyclic[6.3.0]lactam and 12-Membered Macrolides from a Gorgonian-Derived Cladosporium sp. Fungus. Mar Drugs 2015. [PMID: 26198234 PMCID: PMC4515610 DOI: 10.3390/md13074171] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
One new bicyclic lactam, cladosporilactam A (1), and six known 12-membered macrolides (2–7) were isolated from a gorgonian-derived Cladosporium sp. fungus collected from the South China Sea. Their complete structural assignments were elucidated by comprehensive spectroscopic investigation. Quantum chemistry calculations were used in support of the structural determination of 1. The absolute configuration of 1 was determined by calculation of its optical rotation. Cladosporilactam A (1) was the first example of 7-oxabicyclic[6.3.0]lactam obtained from a natural source. Compound 1 exhibited promising cytotoxic activity against cervical cancer HeLa cell line with an IC50 value of 0.76 μM.
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Affiliation(s)
- Fei Cao
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
| | - Qin Yang
- Chinese Center for Chirality, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, and College of Pharmacy Sciences, Hebei University, Baoding 071002, China.
| | - Chang-Lun Shao
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
| | - Chui-Jian Kong
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
| | - Juan-Juan Zheng
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
| | - Yun-Feng Liu
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
| | - Chang-Yun Wang
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
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Converse PJ, Tyagi S, Xing Y, Li SY, Kishi Y, Adamson J, Nuermberger EL, Grosset JH. Efficacy of Rifampin Plus Clofazimine in a Murine Model of Mycobacterium ulcerans Disease. PLoS Negl Trop Dis 2015; 9:e0003823. [PMID: 26042792 PMCID: PMC4714850 DOI: 10.1371/journal.pntd.0003823] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Accepted: 05/11/2015] [Indexed: 11/26/2022] Open
Abstract
Treatment of Buruli ulcer, or Mycobacterium ulcerans disease, has shifted from surgical excision and skin grafting to antibiotic therapy usually with 8 weeks of daily rifampin (RIF) and streptomycin (STR). Although the results have been highly favorable, administration of STR requires intramuscular injection and carries the risk of side effects, such as hearing loss. Therefore, an all-oral, potentially less toxic, treatment regimen has been sought and encouraged by the World Health Organization. A combination of RIF plus clarithromycin (CLR) has been successful in patients first administered RIF+STR for 2 or 4 weeks. Based on evidence of efficacy of clofazimine (CFZ) in humans and mice with tuberculosis, we hypothesized that the combination of RIF+CFZ would be effective against M. ulcerans in the mouse footpad model of M. ulcerans disease because CFZ has similar MIC against M. tuberculosis and M. ulcerans. For comparison, mice were also treated with the gold standard of RIF+STR, the proposed RIF+CLR alternative regimen, or CFZ alone. Treatment was initiated after development of footpad swelling, when the bacterial burden was 4.64±0.14log10 CFU. At week 2 of treatment, the CFU counts had increased in untreated mice, remained essentially unchanged in mice treated with CFZ alone, decreased modestly with either RIF+CLR or RIF+CFZ, and decreased substantially with RIF+STR. At week 4, on the basis of footpad CFU counts, the combination regimens were ranked as follows: RIF+STR>RIF+CLR>RIF+CFZ. At weeks 6 and 8, none of the mice treated with these regimens had detectable CFU. Footpad swelling declined comparably with all of the combination regimens, as did the levels of detectable mycolactone A/B. In mice treated for only 6 weeks and followed up for 24 weeks, there were no relapses in RIF+STR treated mice, one (5%) relapse in RIF+CFZ-treated mice, but >50% in RIF+CLR treated mice. On the basis of these results, RIF+CFZ has potential as a continuation phase regimen for treatment of M. ulcerans disease. Buruli ulcer (BU) is caused by Mycobacterium ulcerans and its toxin, mycolactone. Since 2004, BU has been treated primarily with antibiotics rather than surgery and skin grafting. The current first-line regimen is an oral drug, rifampin (RIF), and an injectable drug, streptomycin (STR), daily for 8 weeks. Because STR injections are painful and have potential side effects, such as hearing loss, a replacement drug is sought. Emerging evidence of the efficacy of the anti-leprosy drug clofazimine (CFZ) against tuberculosis prompted an evaluation of CFZ + RIF as well as another all-oral regimen, RIF + clarithromycin (CLR) in a mouse model of BU. The results showed that RIF+CFZ initially acts more slowly against M. ulcerans than RIF+STR or RIF+CLR but it stops mycolactone production and is as good as RIF+STR and better than RIF+CLR at preventing relapse of infection. A drug regimen with a combination of three drugs, RIF+STR+CFZ, for one or two weeks followed by RIF+CFZ has the potential to limit the duration of STR treatment and achieve comparable cure.
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Affiliation(s)
- Paul J. Converse
- Johns Hopkins University Center for Tuberculosis Research, Baltimore, Maryland, United States of America
- * E-mail:
| | - Sandeep Tyagi
- Johns Hopkins University Center for Tuberculosis Research, Baltimore, Maryland, United States of America
| | - Yalan Xing
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts, United States of America
| | - Si-Yang Li
- Johns Hopkins University Center for Tuberculosis Research, Baltimore, Maryland, United States of America
| | - Yoshito Kishi
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts, United States of America
| | - John Adamson
- KwaZulu-Natal Research Institute for Tuberculosis and HIV, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
| | - Eric L. Nuermberger
- Johns Hopkins University Center for Tuberculosis Research, Baltimore, Maryland, United States of America
| | - Jacques H. Grosset
- Johns Hopkins University Center for Tuberculosis Research, Baltimore, Maryland, United States of America
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41
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Abstract
Four new macrocyclic lactones, bryostatin 21 (1) and 9-O-methylbryostatins 4, 16, and 17 (2-4), together with three known related compounds, bryostatins 4, 16, and 17 (5-7), have been isolated from an extract of the South China Sea bryozoan Bugula neritina. The structures of all compounds were unambiguously elucidated using detailed spectroscopic analysis. Structurally, the presence of a single methyl group at C-18 in compound 1 has not been observed before for known bryostatins. The isolated macrolides exhibited inhibitory effects against a small panel of human cancer cell lines.
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Affiliation(s)
- Hao-Bing Yu
- †Laboratory of Marine Drugs, Department of Pharmacy, Changzheng Hospital, Second Military Medical University, 415 Fengyang Road, Shanghai 200003, People's Republic of China
- ‡Marine Drugs Research Center, Department of Pharmacy, State Key Laboratory of Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, 160 Pujian Road, Shanghai 200127, People's Republic of China
| | - Fan Yang
- ‡Marine Drugs Research Center, Department of Pharmacy, State Key Laboratory of Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, 160 Pujian Road, Shanghai 200127, People's Republic of China
| | - Yan-Yun Li
- ‡Marine Drugs Research Center, Department of Pharmacy, State Key Laboratory of Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, 160 Pujian Road, Shanghai 200127, People's Republic of China
| | - Jian-Hong Gan
- †Laboratory of Marine Drugs, Department of Pharmacy, Changzheng Hospital, Second Military Medical University, 415 Fengyang Road, Shanghai 200003, People's Republic of China
| | - Wei-Hua Jiao
- ‡Marine Drugs Research Center, Department of Pharmacy, State Key Laboratory of Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, 160 Pujian Road, Shanghai 200127, People's Republic of China
| | - Hou-Wen Lin
- †Laboratory of Marine Drugs, Department of Pharmacy, Changzheng Hospital, Second Military Medical University, 415 Fengyang Road, Shanghai 200003, People's Republic of China
- ‡Marine Drugs Research Center, Department of Pharmacy, State Key Laboratory of Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, 160 Pujian Road, Shanghai 200127, People's Republic of China
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Lapchinskaya OA, Katrukha GS, Terekhova LP, Gladkikh EG, Kulyaeva VV, Pogozheva VV, Orlova GI, Trenin AS, Fedorova GB. [Irumamicin Produced by Streptomyces roseoflavus INA-1278]. Antibiot Khimioter 2015; 60:3-6. [PMID: 27141631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The strain Streptomyces roseoflavus INA-1278 is described as a new irumamicin producer. Irumamicin 1278 is different by the antifungal activity from irumamicin produced by the world-known strain Streptomyces subflavus subsp. Irumaensis subps. nov. AM-3603.
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Abstract
In the course of a screening for compounds inhibiting the growth of two human breast cancer cells lines, two highly cytotoxic compounds were isolated from fermentations of Myrothecium roridum. The elucidation of their structures revealed that they are macrocyclic trichothecenes of the verrucarin type, 16-hydroxyverrucarin A (1), reported here as a natural product for the first time, and verrucarin X (2), a new compound. Both 1 and 2 exhibit moderate antifungal activity and pronounced cytotoxic activity, with IC50 values in the nanomolar (1) and micromolar (2) range. Both compounds preferentially inhibit in vivo protein biosynthesis.
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Affiliation(s)
- Sylvia Schoettler
- Department of Biotechnology, University of Kaiserslautern, Paul-Ehrlich-Str. 23, D-67663 Kaiserslautern, Germany
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Xu J, Jiang CS, Zhang ZL, Ma WQ, Guo YW. Recent progress regarding the bioactivities, biosynthesis and synthesis of naturally occurring resorcinolic macrolides. Acta Pharmacol Sin 2014; 35:316-30. [PMID: 24464049 PMCID: PMC4647893 DOI: 10.1038/aps.2013.155] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2013] [Accepted: 09/25/2013] [Indexed: 12/15/2022] Open
Abstract
Macrolides, which comprise a family of lactones with different ring sizes, belong to the polyketide class of natural products. Resorcinolic macrolides, an important subgroup, possess interesting structures and exhibit a wide variety of bioactivities, such as anti-tumor, anti-bacteria, and anti-malaria activities, etc. This review summarizes progress in isolation, bioactivity studies, biosynthesis, and representative chemical syntheses of this group of macrolides in recent decades, encompassing 63 naturally occurring macrolides published in 120 articles.
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Affiliation(s)
- Jing Xu
- College of Science, China University of Petroleum, Qingdao 266580, China
- Weifang Biomedical Innovation and Entrepreneurship Service Center, Weifang 261205, China
| | - Cheng-shi Jiang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Zai-long Zhang
- College of Science, China University of Petroleum, Qingdao 266580, China
| | - Wen-quan Ma
- Weifang Biomedical Innovation and Entrepreneurship Service Center, Weifang 261205, China
| | - Yue-wei Guo
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
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Yakhkind MI, Tarantseva KR, Marynova MA, Storozhenko PA, Rasulov MM. [Molecular imprinted polymers for macrolides, aminoglycosides and some other biosynthetic antibiotics]. Antibiot Khimioter 2014; 59:37-40. [PMID: 25975106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Molecular imprinted polymers (MIP) for macrolides, aminoglycosides and some other biosynthetic antibiotics described in the literature were analysed with a purpose of evaluating their possible use for the antibiotics sorption.
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Meng LH, Li XM, Lv CT, Li CS, Xu GM, Huang CG, Wang BG. Sulfur-containing cytotoxic curvularin macrolides from Penicillium sumatrense MA-92, a fungus obtained from the rhizosphere of the mangrove Lumnitzera racemosa. J Nat Prod 2013; 76:2145-2149. [PMID: 24195466 DOI: 10.1021/np400614f] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Sumalarins A-C (1-3), the new and rare examples of sulfur-containing curvularin derivatives, along with three known analogues (4-6), were isolated and identified from the cytotoxic extract of Penicillium sumatrense MA-92, a fungus obtained from the rhizosphere of the mangrove Lumnitzera racemosa . Their structures were established by detailed interpretation of NMR and MS data, and compound 1 was confirmed by X-ray crystallographic analysis. Compounds 1-3 and 5 showed potent cytotoxicity against some of the tested tumor cell lines. Sulfur substitution at C-11 or a double bond at C-10 significantly increased the cytotoxic activities of the curvularin analogues.
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Affiliation(s)
- Ling-Hong Meng
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences , Nanhai Road 7, Qingdao 266071, People's Republic of China
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Wu C, Tan Y, Gan M, Wang Y, Guan Y, Hu X, Zhou H, Shang X, You X, Yang Z, Xiao C. Identification of elaiophylin derivatives from the marine-derived actinomycete Streptomyces sp. 7-145 using PCR-based screening. J Nat Prod 2013; 76:2153-2157. [PMID: 24164206 DOI: 10.1021/np4006794] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A PCR-based genetic screening experiment targeting the dTDP-glucose-4,6-dehydratase gene revealed that a marine sediment-derived strain, Streptomyces sp. 7-145, had the potential to produce glycosidic antibiotics. Chemical investigation of culture extracts of this strain yielded two new 6-deoxyhexose-containing antibiotics, 11',12'-dehydroelaiophylin (1) and 11,11'-O-dimethyl-14'-deethyl-14'-methylelaiophylin (2), together with four known elaiophylin analogues (3-6). Their structures were determined by extensive NMR, MS, and CD analyses. Compounds 1, 3, 4, and 6 showed good antibacterial activity against methicillin-resistant Staphylococcus aureus and vancomycin-resistant enterococci pathogens.
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Affiliation(s)
- Chunyan Wu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050, People's Republic of China
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Poth D, Peram PS, Vences M, Schulz S. Macrolides and alcohols as scent gland constituents of the Madagascan frog Mantidactylus femoralis and their intraspecific diversity. J Nat Prod 2013; 76:1548-1558. [PMID: 24004086 DOI: 10.1021/np400131q] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Acoustic and, to a lesser degree, visual signals are the predominant means of signaling in frogs. Nevertheless, certain lineages such as the mantelline frogs from Madagascar use the chemical communication channel as well. Males possess femoral glands on the hind legs, which recently have been shown to contain volatile compounds used in communication as pheromones. Many mantelline species occur in sympatry, and so far species recognition is regarded to occur mainly by acoustic signals. The analysis of the gland constituents of Mantidactylus femoralis by GC/MS revealed the presence of volatile macrolides and secondary alcohols. The new natural products mantidactolides A (4) and B (6), as well as several methyl carbinols, were identified, and their structures were confirmed by synthesis. The analysis of individuals from different locations of Madagascar revealed the presence of two groups characterized by specific patterns of compounds. While one group contained the alcohols and mantidactolide B, the other showed specific presence of the macrolides phoracantholide I (1) and mantidactolide A (4). Genetic analysis of some individuals showed no congruence between genetic relatedness and gland constituents. Several other individuals from related species had different gland compositions. This suggests that a basic set of biosynthetic machinery might be available to a broader group of related species.
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Affiliation(s)
- Dennis Poth
- Institut für Organische Chemie, Technische Universität Braunschweig , Hagenring 30, 38106 Braunschweig, Germany
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Bao J, Xu XY, Zhang XY, Qi SH. A new macrolide from a marine-derived fungus Aspergillus sp. Nat Prod Commun 2013; 8:1127-1128. [PMID: 24079185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023] Open
Abstract
A new 16-membered macrolide named aspergillide D (1), along with six known compounds, including two polyketones (2-3) and four alkaloids (4-7), were isolated from the culture broth of a marine-derived fungus Aspergillus sp. SCSGAF 0076. The structure of 1 was elucidated on the basis of NMR and mass spectra. Compound 5 showed an obvious inhibitory effect on influenza virus strains H1N1 and H3N2.
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Affiliation(s)
- Jie Bao
- Key Laboratory of Marine Bio-resources Sustainable Utilization/RNAM Center for Marine Microbiology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, PR China
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Tareq FS, Kim JH, Lee MA, Lee HS, Lee JS, Lee YJ, Shin HJ. Antimicrobial gageomacrolactins characterized from the fermentation of the marine-derived bacterium Bacillus subtilis under optimum growth conditions. J Agric Food Chem 2013; 61:3428-3434. [PMID: 23488669 DOI: 10.1021/jf4009229] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Marine bacteria are a potential source of structurally diversified bioactive secondary metabolites that are not found in terrestrial sources. In our continuous effort to search for new antimicrobial agents from marine-derived bacteria, we isolated bacterial strain 109GGC020 from a marine sediment sample collected from Gageocho, Republic of Korea. The strain was identified as Bacillus subtilis based on a 16s rRNA sequence analysis. After a 7-day fermentation of the B. subtilis strain under optimum growth conditions three new and four known secondary metabolites were discovered using chromatographic procedures, and their biological activities were evaluated against both bacteria and crop-devastating fungi. The discovered metabolites were confirmed by extensive 2D NMR and high-resolution ESI-MS data analyses to have the structures of new macrolactin derivatives gageomacrolactins 1-3 and known macrolactins A (4), B (5), F (6), and W (7). The stereoconfigurations of 1-3 were assigned based on coupling constant values, chemical derivatization studies, and a literature review. The coupling constants were very crucial to determine the relative geometries of olefins in 1-3 because of overlap of the ¹H NMR signals. The NMR data of these compounds were recorded in different solvents to overcome this problem and obtain accurate coupling constant values. The new macrolactin derivatives 1-3 displayed good antibiotic properties against both Gram-positive (S. aureus, B. subtilis, and B. cereus) and Gram-negative (E. coli, S. typhi, and P. aeruginosa) bacteria with minimum inhibitory concentration (MIC) values of 0.02-0.05 μM. Additionally, the antifungal activities of 1-7 were evaluated against pathogenic fungi and found to inhibit mycelial growth of A. niger, B. cinerea, C. acutatum, C. albicans, and R. solani with MIC values of 0.04-0.3 μM, demonstrating that these compounds were good fungicides.
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Affiliation(s)
- Fakir Shahidullah Tareq
- Department of Marine Biotechnology, University of Science and Technology, Yuseong-gu, Daejeon, Republic of Korea
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