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Kanchanasin P, Salahong T, Sripreechasak P, Suriyachadkun C, Harunari E, Igarashi Y, Tanasupawat S, Tawinwung S, Vimolmangkang S, Chaotham C, Phongsopitanun W. Discovery of two new actinobacteria, Micromonospora palythoicola sp. nov. and Streptomyces poriticola sp. nov., isolated from marine invertebrates. Sci Rep 2024; 14:22140. [PMID: 39333582 PMCID: PMC11436869 DOI: 10.1038/s41598-024-73040-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Accepted: 09/12/2024] [Indexed: 09/29/2024] Open
Abstract
Marine invertebrates represent an underexplored reservoir for actinobacteria, which are known to synthesize novel bioactive compounds. This study isolated 37 actinobacterial strains from five distinct marine invertebrate hosts, namely Chondrilla australiensis, Palythoa sp., Favia sp., Porites lutea, and Acropora cervicornis, while no strains were obtained from Lissoclinum sp. and Lithophyllon sp. These isolates were taxonomically classified into six genera: Gordonia, Microbacterium, Micromonospora, Nocardia, Rhodococcus, and Streptomyces, with Streptomyces and Micromonospora being notably predominant. Comparative genomic analysis facilitated the identification of two novel species: Micromonospora palythoicola sp. nov. (strain S2-005T = TBRC 18343T and NBRC 116545T) and Streptomyces poriticola sp. nov. (strain C6-003T, =TBRC 17807T and NBRC 116425T). Both species exhibited substantial genetic differences from their nearest known species as demonstrated by digital DNA-DNA hybridization and average nucleotide identity scores, which fell below the thresholds of 70% and 95%, respectively. Streptomyces poriticola C6-003T displayed significant antimicrobial activity and selective cytotoxicity against human breast cancer MCF-7 cells, with reduced toxicity towards human dermal papilla cells. Micromonospora palythoicola S2-005T manifested antimicrobial properties against Streptococcus mutans and Kocuria rhizophila. These findings highlight the considerable diversity of actinobacteria within marine invertebrates and underscore their potential as a source of new species with promising biological properties for therapeutic applications.
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Affiliation(s)
- Pawina Kanchanasin
- Department of Biochemistry and Microbiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Thanarat Salahong
- Department of Biochemistry and Microbiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Paranee Sripreechasak
- Office of Educational Affairs, Faculty of Science, Burapha University, Chonburi, 20131, Thailand
| | - Chanwit Suriyachadkun
- Thailand Bioresource Research Center (TBRC), National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Klong Luang, Pathumthani, 12120, Thailand
| | - Enjuro Harunari
- Biotechnology Research Center, Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama, 939-0398, Japan
| | - Yasuhiro Igarashi
- Biotechnology Research Center, Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama, 939-0398, Japan
| | - Somboon Tanasupawat
- Department of Biochemistry and Microbiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Supannikar Tawinwung
- Department of Pharmacology and Physiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Sornkanok Vimolmangkang
- Department of Pharmacognosy and Phamaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Chatchai Chaotham
- Department of Biochemistry and Microbiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Wongsakorn Phongsopitanun
- Department of Biochemistry and Microbiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand.
- Center of Excellence in Natural Products and Nanoparticles (RP2), Chulalongkorn University, Bangkok, Thailand.
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Islam A, Chang YC, Chen XC, Weng CW, Chen CY, Wang CW, Chen MK, Tikhomirov AS, Shchekotikhin AE, Chueh PJ. Water-soluble 4-(dimethylaminomethyl)heliomycin exerts greater antitumor effects than parental heliomycin by targeting the tNOX-SIRT1 axis and apoptosis in oral cancer cells. eLife 2024; 12:RP87873. [PMID: 38567911 PMCID: PMC10990494 DOI: 10.7554/elife.87873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2024] Open
Abstract
The antibiotic heliomycin (resistomycin), which is generated from Streptomyces resistomycificus, has multiple activities, including anticancer effects. Heliomycin was first described in the 1960s, but its clinical applications have been hindered by extremely low solubility. A series of 4-aminomethyl derivatives of heliomycin were synthesized to increase water solubility; studies showed that they had anti-proliferative effects, but the drug targets remained unknown. In this study, we conducted cellular thermal shift assays (CETSA) and molecular docking simulations to identify and validate that heliomycin and its water-soluble derivative, 4-(dimethylaminomethyl)heliomycin (designated compound 4-dmH) engaged and targeted with sirtuin-1 (SIRT1) in p53-functional SAS and p53-mutated HSC-3 oral cancer cells. We further addressed the cellular outcome of SIRT1 inhibition by these compounds and found that, in addition to SIRT1, the water-soluble 4-dmH preferentially targeted a tumor-associated NADH oxidase (tNOX, ENOX2). The direct binding of 4-dmH to tNOX decreased the oxidation of NADH to NAD+ which diminished NAD+-dependent SIRT1 deacetylase activity, ultimately inducing apoptosis and significant cytotoxicity in both cell types, as opposed to the parental heliomycin-induced autophagy. We also observed that tNOX and SIRT1 were both upregulated in tumor tissues of oral cancer patients compared to adjacent normal tissues, suggesting their clinical relevance. Finally, the better therapeutic efficacy of 4-dmH was confirmed in tumor-bearing mice, which showed greater tNOX and SIRT1 downregulation and tumor volume reduction when treated with 4-dmH compared to heliomycin. Taken together, our in vitro and in vivo findings suggest that the multifaceted properties of water-soluble 4-dmH enable it to offer superior antitumor value compared to parental heliomycin, and indicated that it functions through targeting the tNOX-NAD+-SIRT1 axis to induce apoptosis in oral cancer cells.
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Affiliation(s)
- Atikul Islam
- Institute of Biomedical Sciences, National Chung Hsing UniversityTaichungTaiwan
| | - Yu-Chun Chang
- Institute of Biomedical Sciences, National Chung Hsing UniversityTaichungTaiwan
| | - Xiao-Chi Chen
- Institute of Biomedical Sciences, National Chung Hsing UniversityTaichungTaiwan
| | - Chia-Wei Weng
- Institute of Biomedical Sciences, National Chung Hsing UniversityTaichungTaiwan
- Institute of Medicine, Chung Shan Medical UniversityTaichungTaiwan
| | - Chien-Yu Chen
- Institute of Biomedical Sciences, National Chung Hsing UniversityTaichungTaiwan
| | - Che-Wei Wang
- Department of Otorhinolaryngology-Head and Neck Surgery, Changhua Christian HospitalChanghuaTaiwan
- Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing UniversityTaichungTaiwan
| | - Mu-Kuan Chen
- Department of Otorhinolaryngology-Head and Neck Surgery, Changhua Christian HospitalChanghuaTaiwan
- Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing UniversityTaichungTaiwan
| | | | | | - Pin Ju Chueh
- Institute of Biomedical Sciences, National Chung Hsing UniversityTaichungTaiwan
- Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing UniversityTaichungTaiwan
- Department of Medical Research, China Medical University HospitalTaichungTaiwan
- Graduate Institute of Basic Medicine, China Medical UniversityTaichungTaiwan
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Chhetri G, Kim MJ, Kim I, Tran DVH, Kim YW, Kim HW, Seo T. Streptomyces tagetis sp. nov., a chromomycin producing bacteria isolated from the roots of Tagetes patula. Front Microbiol 2024; 15:1361583. [PMID: 38495511 PMCID: PMC10940327 DOI: 10.3389/fmicb.2024.1361583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Accepted: 02/08/2024] [Indexed: 03/19/2024] Open
Abstract
A novel halotolerant actinobacterium, designated as RG38T, capable of producing black extracellular melanin pigment on SP2 agar, was isolated from the roots of Tagetes patula. Comparative analysis of the 16S rRNA gene sequence revealed the highest similarity to Streptomyces collinus NBRC 12759T (99.3%). Phylogenetic analysis showed that strain RG38T clustered within the genus Streptomyces forming a monophyletic cluster with its close relatives. The average nucleotide identity (ANI), digital DNA-DNA hybridization (dDDH), and amino-acid identity (AAI) values between strain RG38T and related species within the genus Streptomyces were below the standard threshold for prokaryotic species delineation. The DNA G + C content of the strain RG38T was determined to be 73.3%. The genome size measured 7,150,598 bp comprising 17 contigs and encompassed 6,053 protein coding genes. AntiSMASH analysis of the whole genome revealed 35 putative biosynthetic gene clusters (BGCs) responsible for various secondary metabolites. Among these clusters, two gene clusters exhibited 100% similarity to the chromomycin A3, albaflavenone, and anthracimycin, respectively. These compounds were reported to possess significant anticancer and antibacterial activities. LC-MS-based analysis, coupled with further isolation studies, confirmed the production of chromomycins A2 (1), A3 (2), and their derivatives, along with their antibiotic activities. These findings underscore the potential of this novel strain as a novel resource for the discovery of diverse antimicrobial compounds. This study is the first to report an antimicrobial compound producing Streptomyces species isolated from medicinal plant T. patula. Based on a polyphasic study, the strain RG38T isolated from an unexplored habitat with a high potential for new natural products represents a novel species within the genus Streptomyces. Accordingly, we propose the name Streptomyces tagetis sp. nov. for this novel species, with the type strain is RG38T (=KCTC 49624T = TBRC 15113T).
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Affiliation(s)
- Geeta Chhetri
- Department of Life Science, Dongguk University-Seoul, Goyang, Republic of Korea
| | - Myeong Ji Kim
- College of Pharmacy and Integrated Research Institute for Drug Development, Dongguk University-Seoul, Goyang, Republic of Korea
| | - Inhyup Kim
- Department of Life Science, Dongguk University-Seoul, Goyang, Republic of Korea
| | - Duc V. H. Tran
- College of Pharmacy and Integrated Research Institute for Drug Development, Dongguk University-Seoul, Goyang, Republic of Korea
| | - Young-Woo Kim
- College of Pharmacy and Integrated Research Institute for Drug Development, Dongguk University-Seoul, Goyang, Republic of Korea
| | - Hyun Woo Kim
- College of Pharmacy and Integrated Research Institute for Drug Development, Dongguk University-Seoul, Goyang, Republic of Korea
| | - Taegun Seo
- Department of Life Science, Dongguk University-Seoul, Goyang, Republic of Korea
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Giurini EF, Godla A, Gupta KH. Redefining bioactive small molecules from microbial metabolites as revolutionary anticancer agents. Cancer Gene Ther 2024; 31:187-206. [PMID: 38200347 PMCID: PMC10874892 DOI: 10.1038/s41417-023-00715-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 11/22/2023] [Accepted: 11/29/2023] [Indexed: 01/12/2024]
Abstract
Cancer treatment remains a significant challenge due to issues such as acquired resistance to conventional therapies and the occurrence of adverse treatment-related toxicities. In recent years, researchers have turned their attention to the microbial world in search of novel and effective drugs to combat this devastating disease. Microbial derived secondary metabolites have proven to be a valuable source of biologically active compounds, which exhibit diverse functions and have demonstrated potential as treatments for various human diseases. The exploration of these compounds has provided valuable insights into their mechanisms of action against cancer cells. In-depth studies have been conducted on clinically established microbial metabolites, unraveling their anticancer properties, and shedding light on their therapeutic potential. This review aims to comprehensively examine the anticancer mechanisms of these established microbial metabolites. Additionally, it highlights the emerging therapies derived from these metabolites, offering a glimpse into the immense potential they hold for anticancer drug discovery. Furthermore, this review delves into approved treatments and major drug candidates currently undergoing clinical trials, focusing on specific molecular targets. It also addresses the challenges and issues encountered in the field of anticancer drug research and development. It also presents a comprehensive exposition of the contemporary panorama concerning microbial metabolites serving as a reservoir for anticancer agents, thereby illuminating their auspicious prospects and the prospect of forthcoming strides in the domain of cancer therapeutics.
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Affiliation(s)
- Eileena F Giurini
- Division of Surgical Oncology, Department of Surgery, Rush University Medical Center, Chicago, IL, 60612, USA
| | - Aishvarya Godla
- Division of Surgical Oncology, Department of Surgery, Rush University Medical Center, Chicago, IL, 60612, USA
| | - Kajal H Gupta
- Division of Surgical Oncology, Department of Surgery, Rush University Medical Center, Chicago, IL, 60612, USA.
- Division of Pediatric Surgery, Department of Surgery, Rush University Medical Center, Chicago, IL, 60612, USA.
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Aloufi AS, Habotta OA, Abdelfattah MS, Habib MN, Omran MM, Ali SA, Abdel Moneim AE, Korany SM, Alrajhi AM. Resistomycin Suppresses Prostate Cancer Cell Growth by Instigating Oxidative Stress, Mitochondrial Apoptosis, and Cell Cycle Arrest. Molecules 2023; 28:7871. [PMID: 38067602 PMCID: PMC10708360 DOI: 10.3390/molecules28237871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 11/27/2023] [Accepted: 11/29/2023] [Indexed: 12/18/2023] Open
Abstract
Globally, prostate cancer is among the most threatening and leading causes of death in men. This study, therefore, aimed to search for an ideal antitumor strategy with high efficacy, low drug resistance, and no or few adverse effects. Resistomycin is a natural antibiotic derived from marine actinomycetes, and it possesses various biological activities. Prostate cancer cells (PC3) were treated with resistomycin (IC12.5: 0.65 or IC25: 1.3 µg/mL) or 5-fluorouracil (5-FU; IC25: 7 µg/mL) for 24 h. MTT assay and flow cytometry were utilized to assess cell viability and apoptosis. Oxidative stress, apoptotic-related markers, and cell cycle were also assessed. The results revealed that the IC50 of resistomycin and 5-FU on PC3 cells were 2.63 µg/mL and 14.44 µg/mL, respectively. Furthermore, treated cells with the high dose of resistomycin showed an increased number of apoptotic cells compared to those treated with the lower dose. Remarkable induction of reactive oxygen species generation and lactate dehydrogenase (LDH) leakage with high malondialdehyde (MDA), carbonyl protein (CP), and 8-hydroxyguanosine (8-OHdG) contents were observed in resistomycin-treated cells. In addition, marked declines in glutathione (GSH), superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx) in PC3 cells subjected to resistomycin therapy were observed. Resistomycin triggered observable cell apoptosis by increasing Bax, caspase-3, and cytosolic cytochrome c levels and decreasing Bcl-2 levels. In addition, notable downregulation of proliferating cell nuclear antigen (PCNA) and cyclin D1 was observed in resistomycin-treated cancerous cells. According to this evaluation, the antitumor potential of resistomycin, in a concentration-dependent manner, in prostate cancer cells was achieved by triggering oxidative stress, mitochondrial apoptosis, and cell cycle arrest in cancer cells. In conclusion, our investigation suggests that resistomycin can be considered a starting point for developing new chemotherapeutic agents for human prostate cancer.
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Affiliation(s)
- Abeer S. Aloufi
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia; (A.S.A.); (S.M.K.); (A.M.A.)
| | - Ola A. Habotta
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt;
| | - Mohamed S. Abdelfattah
- Chemistry Department, Faculty of Science, Helwan University, Cairo 11795, Egypt; (M.S.A.); (M.N.H.)
| | - Marina N. Habib
- Chemistry Department, Faculty of Science, Helwan University, Cairo 11795, Egypt; (M.S.A.); (M.N.H.)
| | - Mohamed M. Omran
- Chemistry Department, Faculty of Science, Helwan University, Cairo 11795, Egypt; (M.S.A.); (M.N.H.)
| | - Sally A. Ali
- Botany and Microbiology Department, Faculty of Science, Helwan University, Cairo 11795, Egypt;
| | - Ahmed E. Abdel Moneim
- Zoology and Entomology Department, Faculty of Science, Helwan University, Cairo 11795, Egypt
| | - Shereen M. Korany
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia; (A.S.A.); (S.M.K.); (A.M.A.)
| | - Aisha M. Alrajhi
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia; (A.S.A.); (S.M.K.); (A.M.A.)
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Zhu Y, Zhang E, Gao H, Shang C, Yin M, Ma M, Liu Y, Zhang X, Li X. Resistomycin Inhibits Wnt/β-Catenin Signaling to Induce the Apoptotic Death of Human Colorectal Cancer Cells. Mar Drugs 2023; 21:622. [PMID: 38132944 PMCID: PMC10745072 DOI: 10.3390/md21120622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 11/27/2023] [Accepted: 11/27/2023] [Indexed: 12/23/2023] Open
Abstract
Resistomycin is a natural antibiotic related to quinone that has been shown to exhibit robust antitumor activity. To further characterize the mechanistic basis for such activity, human colorectal cancer (CRC) cells were selected as a model to explore the role of Wnt/β-catenin signaling in the ability of resistomycin to induce apoptotic cell death. These analyses revealed that resistomycin was able to suppress β-catenin, TCF4, and GSK-3β expression, together with that of the downstream targets c-Myc and survivin. This coincided with elevated cleaved caspase-3 and Bax protein levels and a decline in Bcl-2 content. When β-catenin was silenced, this further enhanced the ability of resistomycin to induce apoptotic CRC cell death, whereas this apoptotic process was partially ablated when cells were treated using lithium chloride to activate Wnt/β-catenin signaling. Overall, these results support a model wherein resistomycin inhibits Wnt/β-catenin signaling within CRC cells, thereby inducing apoptotic death. Further research may be warranted to better clarify the potential utility of this compound as a candidate drug for use in the treatment of patients suffering from this form of cancer.
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Affiliation(s)
- Yaoyao Zhu
- Marine College, Shandong University, Weihai 264200, China; (Y.Z.); (E.Z.); (H.G.); (C.S.); (M.Y.); (M.M.); (Y.L.); (X.Z.)
| | - E Zhang
- Marine College, Shandong University, Weihai 264200, China; (Y.Z.); (E.Z.); (H.G.); (C.S.); (M.Y.); (M.M.); (Y.L.); (X.Z.)
| | - Huan Gao
- Marine College, Shandong University, Weihai 264200, China; (Y.Z.); (E.Z.); (H.G.); (C.S.); (M.Y.); (M.M.); (Y.L.); (X.Z.)
| | - Chuangeng Shang
- Marine College, Shandong University, Weihai 264200, China; (Y.Z.); (E.Z.); (H.G.); (C.S.); (M.Y.); (M.M.); (Y.L.); (X.Z.)
| | - Mengxiong Yin
- Marine College, Shandong University, Weihai 264200, China; (Y.Z.); (E.Z.); (H.G.); (C.S.); (M.Y.); (M.M.); (Y.L.); (X.Z.)
| | - Mingtao Ma
- Marine College, Shandong University, Weihai 264200, China; (Y.Z.); (E.Z.); (H.G.); (C.S.); (M.Y.); (M.M.); (Y.L.); (X.Z.)
| | - Yu Liu
- Marine College, Shandong University, Weihai 264200, China; (Y.Z.); (E.Z.); (H.G.); (C.S.); (M.Y.); (M.M.); (Y.L.); (X.Z.)
| | - Xuanfeng Zhang
- Marine College, Shandong University, Weihai 264200, China; (Y.Z.); (E.Z.); (H.G.); (C.S.); (M.Y.); (M.M.); (Y.L.); (X.Z.)
| | - Xia Li
- Marine College, Shandong University, Weihai 264200, China; (Y.Z.); (E.Z.); (H.G.); (C.S.); (M.Y.); (M.M.); (Y.L.); (X.Z.)
- Shandong Kelun Pharmaceutical Co., Ltd., Binzhou 256600, China
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Nair S, Abraham J. Bioproduction and Characterization of Pigments from Streptomyces sp. Isolated from Marine Biotope. APPL BIOCHEM MICRO+ 2022. [DOI: 10.1134/s0003683822060114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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Shafaa MW, Hassan ESE, Faraag AHI, Essawy E, Abdelfattah MS. Fabrication and characterization of pigmented secondary metabolites bound liposomes with improved cytotoxic activity against prostate and hepatic cancer. INTERNATIONAL NANO LETTERS 2022. [DOI: 10.1007/s40089-022-00375-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kim MC, Li Z, Cullum R, Molinski TF, Eid MAG, Hebishy AMS, Faraag AHI, Abdel Moneim AE, Abdelfattah MS, Fenical W. Chlororesistoflavins A and B, Chlorinated Benzopyrene Antibiotics Produced by the Marine-Derived Actinomycete Streptomyces sp. Strain EG32. JOURNAL OF NATURAL PRODUCTS 2022; 85:270-275. [PMID: 34967630 DOI: 10.1021/acs.jnatprod.1c01084] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
As part of a collaborative biomedical investigation of actinomycete bacteria isolated from sediments collected along the northern coast of Egypt (Mediterranean Sea), we explored the antibacterial metabolites from a bacterium identified as a Streptomyces sp., strain EG32. HPLC analysis and antibacterial testing against methicillin-resistant Staphylococcus aureus (MRSA) resulted in the identification of six compounds related to the resistoflavin and resistomycin class. Two of these metabolites were the chlorine-containing analogues chlororesistoflavins A (1) and B (2). The absolute configurations of the lone stereogenic center (C-11b) in these metabolites were assigned by analysis of their ECD spectra. Interestingly, the ECD spectrum of chlororesistoflavin A (1) shows a Cotton effect of the n-π* transition antipodal to that of the parent natural product, a consequence of 1,3-allylic strain induced by the adjacent bulky chlorine atom that distorts the coplanarity of the carbonyl group with the π-system. The chiroptical analysis thus resolves the paradox and uniformly aligns the configuration of all analogues as identical to that reported for natural resistoflavin. Chlororesistoflavins A (1) and B (2) exhibited antibacterial activity against MRSA with a minimum inhibitory concentration of 0.25 and 2.0 μg/mL, respectively.
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Affiliation(s)
- Min Cheol Kim
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, California 92093-0204, United States
| | - Zhifei Li
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, California 92093-0204, United States
| | - Reiko Cullum
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, California 92093-0204, United States
| | - Tadeusz F Molinski
- Department of Chemistry and Biochemistry, University of California San Diego, San Diego 92093-0358, United States
| | - Mennat Allah G Eid
- Natural Products Research Unit, Chemistry Department, Faculty of Science, Helwan University, Cairo 11795, Egypt
| | - Ali M S Hebishy
- Natural Products Research Unit, Chemistry Department, Faculty of Science, Helwan University, Cairo 11795, Egypt
| | - Ahmed H I Faraag
- Botany and Microbiology Department, Faculty of Science, Helwan University, Cairo 11795, Egypt
| | - Ahmed E Abdel Moneim
- Zoology and Entomology Department, Faculty of Science, Helwan University, Cairo 11795, Egypt
| | - Mohamed S Abdelfattah
- Natural Products Research Unit, Chemistry Department, Faculty of Science, Helwan University, Cairo 11795, Egypt
| | - William Fenical
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, California 92093-0204, United States
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Resistomycin Induced Apoptosis and Cycle Arrest in Human Hepatocellular Carcinoma Cells by Activating p38 MAPK Pathway In Vitro and In Vivo. Pharmaceuticals (Basel) 2021; 14:ph14100958. [PMID: 34681182 PMCID: PMC8537932 DOI: 10.3390/ph14100958] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 09/10/2021] [Accepted: 09/16/2021] [Indexed: 12/02/2022] Open
Abstract
Resistomycin, a quinone-related natural antibiotic, has shown strong inhibitory activity against human hepatocellular carcinoma (HCC) in vitro. Here, we investigated the role of p38 MAPK in the pro-apoptotic and G2/M phase arrest action of HCC HepG2 cells upon treatment with resistomycin in vitro and in vivo. Our results showed that resistomycin dose- and time-dependently reduced the viability of HepG2 cells and also showed lower cytotoxicity in normal human kidney cells (293T) and hepatocyte cells (HL-7702). Resistomycin treatment induced apoptosis and cell cycle arrest in HepG2 cells, accompanied by changes in the expression of related proteins, including Bax, Cyclin B1, etc. Surprisingly, resistomycin-mediated apoptotic cell death and cell cycle arrest were impeded by SB203580 (an inhibitor of p38 catalytic activity), suggesting that p38 MAPK signaling may play an important role that impedes eventual cell death. In this connection, data in vitro and in vivo demonstrated that resistomycin increased the phosphorylation of p38 and MAPKAPK-2 in HepG2 cells. Furthermore, we provided evidence that p38 signaling is involved in resistomycin-induced p38 MAPK pathway effects in HCC, using computer docking models. Our study indicated that resistomycin activates the p38 MAPK signaling pathway by which the growth of HepG2 cells is suppressed for apoptosis and G2/M phase arrest in vitro and in vivo, and it is a promising therapeutic leading compound for drug development in HCC treatment.
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Tikhomirov AS, Abdelhamid MAS, Nadysev GY, Zatonsky GV, Bykov EE, Chueh PJ, Waller ZAE, Shchekotikhin AE. Water-Soluble Heliomycin Derivatives to Target i-Motif DNA. JOURNAL OF NATURAL PRODUCTS 2021; 84:1617-1625. [PMID: 33974416 DOI: 10.1021/acs.jnatprod.1c00162] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Heliomycin (also known as resistomycin) is an antibiotic with a broad spectrum of biological activities. However, low aqueous solubility and poor knowledge of its chemical properties have limited the development of this natural product. Here, we present an original scheme for the introduction of aminoalkylamine residues at positions 3, 5, and 7 of heliomycin and, using this, have prepared a series of novel water-soluble derivatives. The addition of side chains to the heliomycin scaffold significantly improves their interaction with different DNA secondary structures. One derivative, 7-deoxy-7-(2-aminoethyl)amino-10-O-methylheliomycin (8e), demonstrated affinity, stabilization potential, and good selectivity toward i-motif-forming DNA sequences over the duplex and G-quadruplex. Heliomycin derivatives therefore represent promising molecular scaffolds for further development as DNA-i-motif interacting ligands and potential chemotherapeutic agents.
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Affiliation(s)
- Alexander S Tikhomirov
- Laboratory of Chemical Transformation of Antibiotics, Gause Institute of New Antibiotics, 11 B. Pirogovskaya Street, Moscow 119021, Russia
| | | | - Georgy Y Nadysev
- Laboratory of Chemical Transformation of Antibiotics, Gause Institute of New Antibiotics, 11 B. Pirogovskaya Street, Moscow 119021, Russia
| | - George V Zatonsky
- Laboratory of Chemical Transformation of Antibiotics, Gause Institute of New Antibiotics, 11 B. Pirogovskaya Street, Moscow 119021, Russia
| | - Eugene E Bykov
- Laboratory of Chemical Transformation of Antibiotics, Gause Institute of New Antibiotics, 11 B. Pirogovskaya Street, Moscow 119021, Russia
| | - Pin Ju Chueh
- Institute of Biomedical Sciences, National Chung Hsing University, Taichung, Taiwan, Republic of China
| | - Zoë A E Waller
- School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, United Kingdom
| | - Andrey E Shchekotikhin
- Laboratory of Chemical Transformation of Antibiotics, Gause Institute of New Antibiotics, 11 B. Pirogovskaya Street, Moscow 119021, Russia
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Alazzouni AS, Mahmoud AA, Omran MM, Essawy EA, Abdalla MS, Abdelfattah MS. Inhibitory and ameliorative effect of heliomycin derived from actinomycete on induced hepatocellular carcinoma in rats. Naunyn Schmiedebergs Arch Pharmacol 2021; 394:1091-1102. [PMID: 33416934 DOI: 10.1007/s00210-020-02043-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 12/13/2020] [Indexed: 12/09/2022]
Abstract
The hepatoprotective activity of heliomycin obtained from the culture broth of actinomycete AB5 against diethylnitrosamine (DEN)-induced hepatic cancer in Wistar rats was estimated. Heliomycin exhibited a significant decrease in the levels of alanine transaminase (ALT), aspartate transaminase (AST), and alkaline phosphatase (ALP) compared to the positive control. For instance, the heliomycin group after 20 weeks showed a significant decline in ALT, AST, and ALP values (70.75 ± 5.12, 140.25 ± 11.75, and 163.25 ± 18.66, respectively) compared to the positive control group (170.00 ± 9.55, 252.75 ± 12.33, and 278.00 ± 21.32, respectively). Additionally, the isolated compound showed a highly significant decrease in serum alpha-fetoprotein (AFP) levels. After 8, 16, and 20 weeks, the mean values of AFP in the heliomycin group revealed a highly significant decrease (33.62 ± 2.46, 30.00 ± 4.05, and 28.50 ± 2.64, respectively) compared to the positive control group (49.45 ± 3.03, 81.90 ± 6.70, and 90.75 ± 5.12, respectively). The histopathological investigation of liver sections supported the results of biochemical analysis. It was demonstrated that heliomycin showed histological improvement of hepatocytes and marked increase of nuclear pyknotic with clear cytoplasm, which is a sign of improving the apoptotic pathway of malignant cells. It also displayed marked fibrosis at most of the malignant cells and the development of some regenerative nodules. Heliomycin showed moderate immunoreactivity with alpha-fetoprotein (AFP), and proliferation cell nuclear antigen (PCNA) compared to the positive control group. To the best of our knowledge, this is the first study to report the anticancer activity of heliomycin against hepatocellular carcinoma in vivo.
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Affiliation(s)
- Ahmed S Alazzouni
- Zoology Department, Faculty of Science, Helwan University, Cairo, 11795, Egypt
| | - Abdulla A Mahmoud
- Chemistry Department, Faculty of Science, Helwan University, Cairo, 11795, Egypt
| | - Mohamed M Omran
- Chemistry Department, Faculty of Science, Helwan University, Cairo, 11795, Egypt
| | - Ehab A Essawy
- Chemistry Department, Faculty of Science, Helwan University, Cairo, 11795, Egypt
| | - Mohga S Abdalla
- Chemistry Department, Faculty of Science, Helwan University, Cairo, 11795, Egypt.
| | - Mohamed S Abdelfattah
- Chemistry Department, Faculty of Science, Helwan University, Cairo, 11795, Egypt. .,Natural Products Research Unit, Chemistry Department, Faculty of Science, Helwan University, Cairo, 11795, Egypt.
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Essawy E, Abdelfattah MS, El-Matbouli M, Saleh M. Synergistic Effect of Biosynthesized Silver Nanoparticles and Natural Phenolic Compounds against Drug-Resistant Fish Pathogens and Their Cytotoxicity: An In Vitro Study. Mar Drugs 2021; 19:md19010022. [PMID: 33429926 PMCID: PMC7827678 DOI: 10.3390/md19010022] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/31/2020] [Accepted: 01/06/2021] [Indexed: 01/16/2023] Open
Abstract
Fish pathogens causing disease outbreaks represent a major threat to aquaculture industry and food security. The aim of the presented study is to develop safe and effective bioactive agents against two bacterial isolates: Aeromonas hydrophila and Pseudomonas fluorescens. We employed a broth microdilution method to investigate the antibacterial effect of biosynthesized silver nanoparticles (AgNPs); rutin, a natural flavonoid extracted from Ruta graveneoles; and heliomycin, a secondary metabolite produced by marine actinomycetes AB5, as monotherapeutic agents. Moreover, AgNPs in combination with rutin (AgNP + R) and heliomycin (AgNPs + H) were examined for their synergistic effect. The cytotoxic effect of individual bioactive compounds and in combination with AgNPs was investigated on epithelioma papulosum cyprini (EPC) fish cell lines. Individual treatment of AgNPs, rutin, and heliomycin exhibited a dose-dependent antimicrobial activity against A. hydrophila and P. fluorescens. Rutin minimum inhibitory concentration (MIC) showed the lowest cytotoxicity when tested on EPC cell lines, while heliomycin MIC was highly cytotoxic. Combined subtherapeutic doses of AgNPs + R and AgNPs + H displayed additive and synergistic effects against A. hydrophila and P. fluorescens, respectively, with improved results and relative safety profile. The study findings demonstrate that a combination of AgNPs and natural bioactive compounds may represent novel therapeutics fighting fish pathogens potentially affecting the fish farming industry.
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Affiliation(s)
- Ehab Essawy
- Clinical Division of Fish Medicine, University of Veterinary Medicine, 1210 Vienna, Austria; (M.E.-M.); (M.S.)
- Department of Chemistry, Faculty of Science, Helwan University, Cairo 11795, Egypt;
- Helwan Nanotechnology Center, Helwan University, Cairo 11795, Egypt
- Correspondence: ; Tel.: +43-1-250774736; Fax: +43-1-250775192
| | - Mohamed S. Abdelfattah
- Department of Chemistry, Faculty of Science, Helwan University, Cairo 11795, Egypt;
- Marine Natural Products Unit, Faculty of Science, Helwan University, Cairo 11795, Egypt
| | - Mansour El-Matbouli
- Clinical Division of Fish Medicine, University of Veterinary Medicine, 1210 Vienna, Austria; (M.E.-M.); (M.S.)
| | - Mona Saleh
- Clinical Division of Fish Medicine, University of Veterinary Medicine, 1210 Vienna, Austria; (M.E.-M.); (M.S.)
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Elmallah MIY, Cogo S, Constantinescu AA, Elifio-Esposito S, Abdelfattah MS, Micheau O. Marine Actinomycetes-Derived Secondary Metabolites Overcome TRAIL-Resistance via the Intrinsic Pathway through Downregulation of Survivin and XIAP. Cells 2020; 9:cells9081760. [PMID: 32708048 PMCID: PMC7464567 DOI: 10.3390/cells9081760] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 07/13/2020] [Accepted: 07/21/2020] [Indexed: 01/03/2023] Open
Abstract
Resistance of cancer cells to tumor necrosis factor-related apoptosis-inducing ligand (TRAIL)-induced apoptosis represents the major hurdle to the clinical use of TRAIL or its derivatives. The discovery and development of lead compounds able to sensitize tumor cells to TRAIL-induced cell death is thus likely to overcome this limitation. We recently reported that marine actinomycetes’ crude extracts could restore TRAIL sensitivity of the MDA-MB-231 resistant triple negative breast cancer cell line. We demonstrate in this study, that purified secondary metabolites originating from distinct marine actinomycetes (sharkquinone (1), resistomycin (2), undecylprodigiosin (3), butylcyclopentylprodigiosin (4), elloxizanone A (5) and B (6), carboxyexfoliazone (7), and exfoliazone (8)), alone, and in a concentration-dependent manner, induce killing in both MDA-MB-231 and HCT116 cell lines. Combined with TRAIL, these compounds displayed additive to synergistic apoptotic activity in the Jurkat, HCT116 and MDA-MB-231 cell lines. Mechanistically, these secondary metabolites induced and enhanced procaspase-10, -8, -9 and -3 activation leading to an increase in PARP and lamin A/C cleavage. Apoptosis induced by these compounds was blocked by the pan-caspase inhibitor QvD, but not by a deficiency in caspase-8, FADD or TRAIL agonist receptors. Activation of the intrinsic pathway, on the other hand, is likely to explain both their ability to trigger cell death and to restore sensitivity to TRAIL, as it was evidenced that these compounds could induce the downregulation of XIAP and survivin. Our data further highlight that compounds derived from marine sources may lead to novel anti-cancer drug discovery.
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Affiliation(s)
- Mohammed I. Y. Elmallah
- LNC, INSERM, UMR1231, F-21079 Dijon, France; (S.C.); (A.A.C.)
- UFR Science de Santé, Université de Bourgogne Franche-Comté, F-21079 Dijon, France
- Chemistry Department, Faculty of Science, Helwan University, 11795 Ain Helwan, Cairo 11795, Egypt;
- Correspondence: (M.I.Y.E.); (O.M.)
| | - Sheron Cogo
- LNC, INSERM, UMR1231, F-21079 Dijon, France; (S.C.); (A.A.C.)
- UFR Science de Santé, Université de Bourgogne Franche-Comté, F-21079 Dijon, France
- Graduate Programme in Health Sciences, Pontifícia Universidade Catolica do Parana, Curitiba 80215–901, Parana, Brazil;
| | - Andrei A. Constantinescu
- LNC, INSERM, UMR1231, F-21079 Dijon, France; (S.C.); (A.A.C.)
- UFR Science de Santé, Université de Bourgogne Franche-Comté, F-21079 Dijon, France
| | - Selene Elifio-Esposito
- Graduate Programme in Health Sciences, Pontifícia Universidade Catolica do Parana, Curitiba 80215–901, Parana, Brazil;
| | - Mohammed S. Abdelfattah
- Chemistry Department, Faculty of Science, Helwan University, 11795 Ain Helwan, Cairo 11795, Egypt;
- Marine Natural Products Unit (MNPRU), Faculty of Science, Helwan University, 11795 Ain Helwan, Cairo 11795, Egypt
| | - Olivier Micheau
- LNC, INSERM, UMR1231, F-21079 Dijon, France; (S.C.); (A.A.C.)
- UFR Science de Santé, Université de Bourgogne Franche-Comté, F-21079 Dijon, France
- Correspondence: (M.I.Y.E.); (O.M.)
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Damodharan K, Palaniyandi SA, Le B, Suh JW, Yang SH. Streptomyces sp. strain SK68, isolated from peanut rhizosphere, promotes growth and alleviates salt stress in tomato (Solanum lycopersicum cv. Micro-Tom). J Microbiol 2018; 56:753-759. [PMID: 30267318 DOI: 10.1007/s12275-018-8120-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 05/29/2018] [Accepted: 06/28/2018] [Indexed: 11/25/2022]
Abstract
A novel actinobacterium, strain SK68, was isolated from the rhizosphere of peanut plant and its salinity stress alleviation ability was studied using tomato (Solanum lycopersicum cv. Micro-Tom) plants. Based on 16S rDNA based phylogenetic analysis, strain SK68 has been identified as a Streptomyces sp. Strain SK68 had branched substrate mycelium bearing smooth surfaced spores and the spore colour is brownish grey on ISP4 medium. It exhibited enzyme activities such as xylanase, cellulase, amylase, and pectinase and degraded hypoxanthine, casein, and L-tyrosine. The strain SK68 differed in its banding pattern in BOX-PCR and RAPD fingerprinting compared to the closely matching type strains Streptomyces erythrochromogenes NBRC 3304T (AB184746), S. flavotricini NBRC 12770T (AB184132), S. racemochromogenes NBRC 12906T (AB184235), and S. polychromogenes NBRC 13072T (NR041109). Strain SK68 was evaluated for its salinity stress-alleviating activity in tomato plants with 180 mmol/L NaCl under gnotobiotic condition. A significant increase in plant biomass was observed in strain SK68-inoculated tomato plants under salt stress compared to control and salt-stressed non-inoculated plants.
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Affiliation(s)
- Karthiyaini Damodharan
- Center for Nutraceutical and Pharmaceutical Materials, College of Natural Science, Myongji University, Yongin, 17058, Republic of Korea
| | - Sasikumar Arunachalam Palaniyandi
- Department of Biotechnology, Mepco Schlenk Engineering College, Mepco Nagar, Mepco Engineering College, Post-626005, Sivakasi, Tamilnadu, India
| | - Bao Le
- Department of Biotechnology, Chonnam National University, Yeosu, 59626, Republic of Korea
| | - Joo-Won Suh
- Center for Nutraceutical and Pharmaceutical Materials, College of Natural Science, Myongji University, Yongin, 17058, Republic of Korea.
| | - Seung Hwan Yang
- Department of Biotechnology, Chonnam National University, Yeosu, 59626, Republic of Korea.
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Abdelfattah MS, Elmallah MIY, Faraag AHI, Hebishy AMS, Ali NH. Heliomycin and tetracinomycin D: anthraquinone derivatives with histone deacetylase inhibitory activity from marine sponge-associated Streptomyces sp. SP9. 3 Biotech 2018; 8:282. [PMID: 29881660 DOI: 10.1007/s13205-018-1304-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 05/24/2018] [Indexed: 01/04/2023] Open
Abstract
Several actinomycetes strains were isolated from different marine sponges collected from the Red Sea shore in Egypt. The efficiency of their crude extracts to inhibit histone deacetylase (HDAC) enzyme was investigated in the nuclear extract of Hela cell line. The crude extract corresponding to Streptomyces sp. SP9 isolated from the marine sponge Pseudoceratina arabica showed a promising HDAC inhibitory activity with 64 and 81% at 50 and 100 µg/ml, respectively. The strain was identified as Streptomyces sp. by phylogenetic analyses based on its 16S rRNA gene sequence. The major compounds of Streptomyces sp. SP9 were isolated and purified by different chromatographic methods. The chemical structure of the isolated compounds was identified on the basis of their spectroscopic data including mass, 1H and 13C NMR, and by comparison with those of authenticated samples. Structures of compounds 1 and 2 were established as heliomycin and tetracenomycin D, respectively. These compounds exhibited HDAC inhibitory activities with IC50 values of 29.8 ± 0.04 µg/ml for heliomycin (1) and 10.9 ± 0.02 µg/ml for tetracenomycin D (2). A computational docking study for compounds 1 and 2 against HDAC1, HDAC2, and HDAC3 was performed to formulate a hypothetical mechanism by which the tested compounds inhibit HDAC. Tetracenomycin D (2) showed a good binding interactions with HDAC2 (- 5.230 kcal/mol) and HDAC3 (- 6.361 kcal/mol).
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Affiliation(s)
- Mohamed Saleh Abdelfattah
- 1Marine Natural Products Unit (MNPRU), Faculty of Science, Helwan University, Ain Helwan, 11795 Cairo, Egypt
- 2Chemistry Department, Faculty of Science, Helwan University, Ain Helwan, 11795 Cairo, Egypt
| | - Mohammed Ismail Youssef Elmallah
- 1Marine Natural Products Unit (MNPRU), Faculty of Science, Helwan University, Ain Helwan, 11795 Cairo, Egypt
- 2Chemistry Department, Faculty of Science, Helwan University, Ain Helwan, 11795 Cairo, Egypt
| | - Ahmed Hassan Ibrahim Faraag
- 3Botany and Microbiology Department, Faculty of Science, Helwan University, Ain Helwan, 11795 Cairo, Egypt
- 4Faculty of Science, Bioinformatics Center, Helwan University, Ain Helwan, 11795 Cairo, Egypt
| | - Ali Mohamed Salah Hebishy
- 1Marine Natural Products Unit (MNPRU), Faculty of Science, Helwan University, Ain Helwan, 11795 Cairo, Egypt
- 2Chemistry Department, Faculty of Science, Helwan University, Ain Helwan, 11795 Cairo, Egypt
| | - Neama Hassan Ali
- 2Chemistry Department, Faculty of Science, Helwan University, Ain Helwan, 11795 Cairo, Egypt
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17
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Profiling of red pigment produced by Streptomyces sp. JAR6 and its bioactivity. 3 Biotech 2018; 8:22. [PMID: 29276660 DOI: 10.1007/s13205-017-1044-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 12/08/2017] [Indexed: 10/18/2022] Open
Abstract
Actinomycetes strain was isolated from leaf litter soil sample and was identified as Streptomyces sp. by conventional and molecular approaches. The biologically active compound responsible for antimicrobial and anticancer activity of the strain JAR6 was elucidated by solid state fermentation followed by subsequent chromatographic and spectroscopic analysis. Extraction, purification and structural confirmation of red pigment metabolite viz undecylprodigiosin were established on the basis of spectroscopic studies and comparing the data from the literature. The biologically active compound was tested against Gram-positive and Gram-negative clinical isolates and its minimum inhibitory concentration was recorded. The antimicrobial activity of undecylprodigiosin is more prominent against Salmonella sp., Proteus mirabilis, Shigella sp. and Enterococcus sp. whereas, it was less effective against Staphylococcus aureus, Klebsiella pneumonia and Escherichia coli. The anticancer activity of undecylprodigiosin was tested against HeLa cell lines and it exhibited commendable cytotoxicity effect with IC50 value of 145 µg/ml. The present investigation reveals that undecylprodigiosin produced by Streptomyces strain JAR6 is a potent bioactive metabolite with effective pharmaceutical properties.
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Liu X, Arai MA, Ishibashi KTAM. Isolation of Resistomycin from a Terrestrial Actinomycete with TRAIL Resistance-overcoming Activity. Nat Prod Commun 2018. [DOI: 10.1177/1934578x1801300119] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) potently induces apoptosis in most cancer cells, but not in normal cells, and, thus, has attracted intense interest as a promising antitumor agent. Activity-guided fractionation of the culture broth of the actinomycete CKK1172 strain led to the isolation of the antibiotic resistomycin (1) using human gastric adenocarcinoma AGS cells. Compound 1 exhibited TRAIL resistance-overcoming activity at 2 μM with 38% more inhibition than a treatment with 1 alone (without TRAIL) in TRAIL-resistant AGS cells.
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Affiliation(s)
- Xuefeidan Liu
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675 Japan
| | - Midori A. Arai
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675 Japan
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19
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Obeidat M. Cytotoxicity of n-Butanol Extracts of Streptomyces Against Human Breast Cancer Cells. INT J PHARMACOL 2017. [DOI: 10.3923/ijp.2017.969.979] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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20
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Dhivya S, Suresh Kumar C, Bommuraj V, Janarthanam R, Chandran M, Usha T, Middha SK. A study of comparative modelling, simulation and molecular dynamics of CXCR3 receptor with lipid bilayer. J Biomol Struct Dyn 2017; 36:2361-2372. [DOI: 10.1080/07391102.2017.1354783] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Shanmugarajan Dhivya
- Department of Biochemistry and Biotechnology, DBT-BIF Facility, Biotechnology Finishing School, Research Centre, Maharani Lakshmi Ammanni College for Women, Bengaluru, India
| | - Chinaga Suresh Kumar
- Department of Chemistry, Barrix Agro Sciences Pvt. Ltd., 68A, 6th Main, 3rd Phase, Peenya, Bengaluru, India
| | - Vijayakumar Bommuraj
- Department of Biotechnology, Asthagiri Herbal Research Foundation, 162A, Perungudi, Chennai, India
| | - Rethavathi Janarthanam
- Department of Biotechnology, Asthagiri Herbal Research Foundation, 162A, Perungudi, Chennai, India
| | - Meena Chandran
- Department of Biotechnology, Asthagiri Herbal Research Foundation, 162A, Perungudi, Chennai, India
| | - Talambedu Usha
- Department of Biochemistry and Biotechnology, DBT-BIF Facility, Biotechnology Finishing School, Research Centre, Maharani Lakshmi Ammanni College for Women, Bengaluru, India
| | - Sushil Kumar Middha
- Department of Biochemistry and Biotechnology, DBT-BIF Facility, Biotechnology Finishing School, Research Centre, Maharani Lakshmi Ammanni College for Women, Bengaluru, India
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Xie YX, Han XX, Luo XX, Xia ZF, Wan CX, Zhang LL. Streptomyces canalis sp. nov., an actinomycete isolated from an alkali-removing canal. Int J Syst Evol Microbiol 2016; 66:3219-3223. [PMID: 27217157 DOI: 10.1099/ijsem.0.001180] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel actinomycete strain, designated TRM 46794-61T, was isolated from an alkali-removing canal in 14th Farms of Xinjiang Production and Construction Corps, north-west China. The isolate contained ll-diaminopimelic acid as the diagnostic diamino acid. The whole-cell sugar patterns of the isolate contained ribose, mannose and glucose. The polar lipids were diphosphatidylglycerol, phosphatidylmethylethanolamine, phosphatidylethanolamine, phosphatidylcholine, phosphatidylinositol, phosphatidylinositol mannoside and two unidentified phospholipids. The predominant menaquinones were MK-9(H2), MK-9(H4), MK-9(H6) and MK-9(H8). The major fatty acids were iso-C16 : 0, anteiso-C17 : 0 and anteiso-C15 : 0. The G+C content of the DNA was 70.4 mol%. Phylogenetic analysis showed that strain TRM 46794-61T had a 16S rRNA gene sequence similarity of 97.6 % with the most closely related species with a validly published name, Streptomyces aidingensis TRM 46012T, and it could be distinguished from all species in the genus Streptomyces based on data from this polyphasic taxonomic study. However, DNA-DNA hybridization studies between strain TRM 46794-61T and S.aidingensis TRM 46012T showed only 45.4 % relatedness. On the basis of these data, strain TRM 46794-61T should be designated as a representative of a novel species of the genus Streptomyces, for which the name Streptomyces canalis sp. nov. is proposed. The type strain is TRM 46794-61T (=CCTCC AA 2015006T=KCTC 39568T).
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Affiliation(s)
- Yu-Xuan Xie
- College of Life Science, Tarim University/Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin of Xinjiang Production & Construction Corps, Alar 843300, PR China
| | - Xiao-Xue Han
- College of Life Science, Tarim University/Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin of Xinjiang Production & Construction Corps, Alar 843300, PR China
| | - Xiao-Xia Luo
- College of Life Science, Tarim University/Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin of Xinjiang Production & Construction Corps, Alar 843300, PR China
| | - Zhan-Feng Xia
- College of Life Science, Tarim University/Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin of Xinjiang Production & Construction Corps, Alar 843300, PR China
| | - Chuan-Xing Wan
- College of Life Science, Tarim University/Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin of Xinjiang Production & Construction Corps, Alar 843300, PR China
| | - Li-Li Zhang
- College of Life Science, Tarim University/Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin of Xinjiang Production & Construction Corps, Alar 843300, PR China
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Using Molecular Networking for Microbial Secondary Metabolite Bioprospecting. Metabolites 2016; 6:metabo6010002. [PMID: 26761036 PMCID: PMC4812331 DOI: 10.3390/metabo6010002] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 12/23/2015] [Accepted: 12/30/2015] [Indexed: 01/02/2023] Open
Abstract
The oceans represent an understudied resource for the isolation of bacteria with the potential to produce novel secondary metabolites. In particular, actinomyces are well known to produce chemically diverse metabolites with a wide range of biological activities. This study characterised spore-forming bacteria from both Scottish and Antarctic sediments to assess the influence of isolation location on secondary metabolite production. Due to the selective isolation method used, all 85 isolates belonged to the phyla Firmicutes and Actinobacteria, with the majority of isolates belonging to the genera Bacillus and Streptomyces. Based on morphology, thirty-eight isolates were chosen for chemical investigation. Molecular networking based on chemical profiles (HR-MS/MS) of fermentation extracts was used to compare complex metabolite extracts. The results revealed 40% and 42% of parent ions were produced by Antarctic and Scottish isolated bacteria, respectively, and only 8% of networked metabolites were shared between these locations, implying a high degree of biogeographic influence upon secondary metabolite production. The resulting molecular network contained over 3500 parent ions with a mass range of m/z 149–2558 illustrating the wealth of metabolites produced. Furthermore, seven fermentation extracts showed bioactivity against epithelial colon adenocarcinoma cells, demonstrating the potential for the discovery of novel bioactive compounds from these understudied locations.
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Abd-Elnaby H, Abo-Elala G, Abdel-Raouf U, Abd-elwahab A, Hamed M. Antibacterial and anticancer activity of marineStreptomyces parvus: optimization and application. BIOTECHNOL BIOTEC EQ 2015. [DOI: 10.1080/13102818.2015.1086280] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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24
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Aftab U, Zechel DL, Sajid I. Antitumor compounds from Streptomyces sp. KML-2, isolated from Khewra salt mines, Pakistan. Biol Res 2015; 48:58. [PMID: 26466995 PMCID: PMC4607010 DOI: 10.1186/s40659-015-0046-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Accepted: 09/29/2015] [Indexed: 12/21/2022] Open
Abstract
Background Actinomycetes are gram positive bacteria with high G + C content in their DNA and are capable of producing variety of secondary metabolites. Many of these metabolites possess different biological activities and have the potential to be developed as therapeutic agents. The aim of the present study was to screen actinomycetes inhabiting halophilic environment such as Khewra salt mines present in Pakistan for cytotoxic and antitumor compounds. Results An actiomycetes strain designated as Streptomyces sp. KML-2 was isolated from a saline soil of Khewra salt mines, Pakistan. The strain Streptomyces sp. KML-2 showed 84 % cytotoxic activity against larvae of Artemia salina. In the screening phase, the strain exhibited significant antitumor activity with IC50 values of 12, 48 and 56 µg/ml against Hela, MDBK and Vero cell lines, respectively. After that extract from 20 l fermentation was used to purify secondary metabolites by several chromatographic techniques. Structure elucidation of isolated compounds revealed that it is highly stable producer of Chromomycin SA (1) and 1-(1H-indol-3-yl)-propane-1,2,3-triol (2). Both of the isolated compounds showed significant antitumor activity against Hela and MCF-7 cancer cell lines (IC50 values 8.9 and 7.8 µg/ml against Hela; 12.6 and 0.97 µg/ml against MCF-7, respectively). The 16S rRNA gene sequence (1437 bp) of the strain confirm its identity (99 %) with Streptomyces griseus. Conclusions From this research work we were successful in isolating two potent antitumor compounds, Chromomycin SA and 1-(1H-indol-3-yl)-propane-1,2,3-triol from Streptomyces KML-2 strain, isolated from Khewra salt mine. As such this is the second report which confirms that S. griseus can produce Chromomycin SA without introducing any mutagenesis in its biosynthesizing gene cluster and isolated indole derivative is being reported first time from any member of actinomycetes group with having novel antitumor activity against Hela and MCF-7 cells. Nucleotide sequences: Nucleotide sequence data reported are available in the GenBank database under the accession number: GenBank KJ009562. Electronic supplementary material The online version of this article (doi:10.1186/s40659-015-0046-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Usman Aftab
- Department of Microbiology and Molecular Genetics, University of the Punjab, Quaid-e-Azam Campus, Lahore, 54590, Pakistan. .,Department of Chemistry, Queens University, Kingston, ON, K7L 3N6, Canada.
| | - David L Zechel
- Department of Chemistry, Queens University, Kingston, ON, K7L 3N6, Canada.
| | - Imran Sajid
- Department of Microbiology and Molecular Genetics, University of the Punjab, Quaid-e-Azam Campus, Lahore, 54590, Pakistan.
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25
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Carlson S, Tanouye U, Omarsdottir S, Murphy BT. Phylum-specific regulation of resistomycin production in a Streptomyces sp. via microbial coculture. JOURNAL OF NATURAL PRODUCTS 2015; 78:381-387. [PMID: 25537064 DOI: 10.1021/np500767u] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Actinomycete genomes are encoded with immense potential to produce secondary metabolites, however standard laboratory culture experiments rarely provide the conditions under which associated biosynthetic pathways are expressed. Despite years of research attempting to access these pathways and aside from a few well-studied bacterial quorum sensing systems, little is known about the specificity of secondary metabolite regulation in bacteria, such as the conditions under which a bacterium produces an antibiotic and the extent to which it does so in recognition of a particular species in the immediate environment. In the current study, we observed that the cocultivation of a Streptomyces sp. (strain B033) with four pathogenic strains of the phylum Proteobacteria resulted in the production of the antibiotic resistomycin. After further coculture experiments, we determined that Proteobacteria induced the production of resistomycin in B033 at significantly higher rates (65%) than strains from the phyla Firmicutes (5.9%) and Actinobacteria (9.1%), supporting that the regulation of secondary metabolism in bacteria can be dependent on the species present in the immediate environment. These results suggest a lack of promiscuity of antibiotic biosynthetic pathway regulation and indicate that it is feasible to mine existing microbial strain libraries for antibiotics in a phylum-specific manner.
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Affiliation(s)
- Skylar Carlson
- †Department of Medicinal Chemistry and Pharmacognosy, Center for Pharmaceutical Biotechnology, Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, 833 S. Wood Street, Chicago, Illinois 60612, United States
| | - Urszula Tanouye
- †Department of Medicinal Chemistry and Pharmacognosy, Center for Pharmaceutical Biotechnology, Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, 833 S. Wood Street, Chicago, Illinois 60612, United States
| | - Sesselja Omarsdottir
- ‡Faculty of Pharmaceutical Sciences, University of Iceland, Hagi, Hofsvallagata 53, IS-107, Reykjavík, Iceland
| | - Brian T Murphy
- †Department of Medicinal Chemistry and Pharmacognosy, Center for Pharmaceutical Biotechnology, Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, 833 S. Wood Street, Chicago, Illinois 60612, United States
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26
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Zhu H, Swierstra J, Wu C, Girard G, Choi YH, van Wamel W, Sandiford SK, van Wezel GP. Eliciting antibiotics active against the ESKAPE pathogens in a collection of actinomycetes isolated from mountain soils. MICROBIOLOGY-SGM 2014; 160:1714-1725. [PMID: 24794971 DOI: 10.1099/mic.0.078295-0] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The rapid emergence of multidrug-resistant (MDR) bacterial pathogens poses a major threat for human health. In recent years, genome sequencing has unveiled many poorly expressed antibiotic clusters in actinomycetes. Here, we report a well-defined ecological collection of >800 actinomycetes obtained from sites in the Himalaya and Qinling mountains, and we used these in a concept study to see how efficiently antibiotics can be elicited against MDR pathogens isolated recently from the clinic. Using 40 different growth conditions, 96 actinomycetes were identified - predominantly Streptomyces - that produced antibiotics with efficacy against the MDR clinical isolates referred to as ESKAPE pathogens: Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa and/or Enterobacter cloacae. Antimicrobial activities that fluctuated strongly with growth conditions were correlated with specific compounds, including borrelidin, resistomycin, carbomethoxy-phenazine, and 6,7,8- and 5,6,8-trimethoxy-3-methylisocoumarin, of which the latter was not described previously. Our work provided insights into the potential of actinomycetes as producers of drugs with efficacy against clinical isolates that have emerged recently and also underlined the importance of targeting a specific pathogen.
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Affiliation(s)
- Hua Zhu
- Molecular Biotechnology, Institute of Biology, Molecular Biotechnology, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands
| | - Jasper Swierstra
- Department of Medical Microbiology and Infectious Diseases, Erasmus Medical Centre, 's Gravendijkwal 230, 3015 CE Rotterdam, The Netherlands
| | - Changsheng Wu
- Molecular Biotechnology, Institute of Biology, Molecular Biotechnology, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands
| | - Geneviève Girard
- Molecular Biotechnology, Institute of Biology, Molecular Biotechnology, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands
| | - Young Hae Choi
- Natural Products Laboratory, Institute of Biology, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands
| | - Willem van Wamel
- Department of Medical Microbiology and Infectious Diseases, Erasmus Medical Centre, 's Gravendijkwal 230, 3015 CE Rotterdam, The Netherlands
| | - Stephanie K Sandiford
- Molecular Biotechnology, Institute of Biology, Molecular Biotechnology, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands
| | - Gilles P van Wezel
- Molecular Biotechnology, Institute of Biology, Molecular Biotechnology, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands
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27
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Schulze CJ, Bray WM, Woerhmann MH, Stuart J, Lokey RS, Linington RG. "Function-first" lead discovery: mode of action profiling of natural product libraries using image-based screening. ACTA ACUST UNITED AC 2013; 20:285-95. [PMID: 23438757 DOI: 10.1016/j.chembiol.2012.12.007] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Revised: 11/27/2012] [Accepted: 12/13/2012] [Indexed: 12/15/2022]
Abstract
Cytological profiling is a high-content image-based screening technology that provides insight into the mode of action (MOA) for test compounds by directly measuring hundreds of phenotypic cellular features. We have extended this recently reported technology to the mechanistic characterization of unknown natural products libraries for the direct prediction of compound MOAs at the primary screening stage. By analyzing a training set of commercial compounds of known mechanism and comparing these profiles to those obtained from natural product library members, we have successfully annotated extracts based on MOA, dereplicated known compounds based on biological similarity to the training set, and identified and predicted the MOA of a unique family of iron siderophores. Coupled with traditional analytical techniques, cytological profiling provides an avenue for the creation of "function-first" approaches to natural products discovery.
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Affiliation(s)
- Christopher J Schulze
- Department of Chemistry and Biochemistry, University of California Santa Cruz, Santa Cruz, CA 95064, USA
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28
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Valan AM, Ignacimuthu S, Agastian P. Actinomycetes from Western Ghats of Tamil Nadu with its antimicrobial properties. Asian Pac J Trop Biomed 2012. [DOI: 10.1016/s2221-1691(12)60320-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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