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Thapa BB, Huo C, Budhathoki R, Chaudhary P, Joshi S, Poudel PB, Magar RT, Parajuli N, Kim KH, Sohng JK. Metabolic Comparison and Molecular Networking of Antimicrobials in Streptomyces Species. Int J Mol Sci 2024; 25:4193. [PMID: 38673777 PMCID: PMC11050201 DOI: 10.3390/ijms25084193] [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: 02/15/2024] [Revised: 04/03/2024] [Accepted: 04/07/2024] [Indexed: 04/28/2024] Open
Abstract
Streptomyces are well-known for producing bioactive secondary metabolites, with numerous antimicrobials essential to fight against infectious diseases. Globally, multidrug-resistant (MDR) microorganisms significantly challenge human and veterinary diseases. To tackle this issue, there is an urgent need for alternative antimicrobials. In the search for potent agents, we have isolated four Streptomyces species PC1, BT1, BT2, and BT3 from soils collected from various geographical regions of the Himalayan country Nepal, which were then identified based on morphology and 16S rRNA gene sequencing. The relationship of soil microbes with different Streptomyces species has been shown in phylogenetic trees. Antimicrobial potency of isolates was carried out against Staphylococcus aureus American Type Culture Collection (ATCC) 43300, Shigella sonnei ATCC 25931, Salmonella typhi ATCC 14028, Klebsiella pneumoniae ATCC 700603, and Escherichia coli ATCC 25922. Among them, Streptomyces species PC1 showed the highest zone of inhibition against tested pathogens. Furthermore, ethyl acetate extracts of shake flask fermentation of these Streptomyces strains were subjected to liquid chromatography-tandem mass spectrometric (LC-MS/MS) analysis for their metabolic comparison and Global Natural Products Social Molecular Networking (GNPS) web-based molecular networking. We found very similar metabolite composition in four strains, despite their geographical variation. In addition, we have identified thirty-seven metabolites using LC-MS/MS analysis, with the majority belonging to the diketopiperazine class. Among these, to the best of our knowledge, four metabolites, namely cyclo-(Ile-Ser), 2-n-hexyl-5-n-propylresorcinol, 3-[(6-methylpyrazin-2-yl) methyl]-1H-indole, and cyclo-(d-Leu-l-Trp), were detected for the first time in Streptomyces species. Besides these, other 23 metabolites including surfactin B, surfactin C, surfactin D, and valinomycin were identified with the help of GNPS-based molecular networking.
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Affiliation(s)
- Bijaya Bahadur Thapa
- Central Department of Chemistry, Tribhuvan University, Kirtipur 44618, Kathmandu, Nepal; (B.B.T.); (R.B.); (P.C.); (S.J.); (N.P.)
| | - Chen Huo
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea;
| | - Rabin Budhathoki
- Central Department of Chemistry, Tribhuvan University, Kirtipur 44618, Kathmandu, Nepal; (B.B.T.); (R.B.); (P.C.); (S.J.); (N.P.)
| | - Pratiksha Chaudhary
- Central Department of Chemistry, Tribhuvan University, Kirtipur 44618, Kathmandu, Nepal; (B.B.T.); (R.B.); (P.C.); (S.J.); (N.P.)
| | - Soniya Joshi
- Central Department of Chemistry, Tribhuvan University, Kirtipur 44618, Kathmandu, Nepal; (B.B.T.); (R.B.); (P.C.); (S.J.); (N.P.)
| | - Purna Bahadur Poudel
- Institute of Biomolecule Reconstruction (iBR), Department of Life Science and Biochemical Engineering, Sun Moon University, Asan 31460, Republic of Korea; (P.B.P.); (R.T.M.)
| | - Rubin Thapa Magar
- Institute of Biomolecule Reconstruction (iBR), Department of Life Science and Biochemical Engineering, Sun Moon University, Asan 31460, Republic of Korea; (P.B.P.); (R.T.M.)
| | - Niranjan Parajuli
- Central Department of Chemistry, Tribhuvan University, Kirtipur 44618, Kathmandu, Nepal; (B.B.T.); (R.B.); (P.C.); (S.J.); (N.P.)
- Institute of Biomolecule Reconstruction (iBR), Department of Life Science and Biochemical Engineering, Sun Moon University, Asan 31460, Republic of Korea; (P.B.P.); (R.T.M.)
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea;
| | - Jae Kyung Sohng
- Institute of Biomolecule Reconstruction (iBR), Department of Life Science and Biochemical Engineering, Sun Moon University, Asan 31460, Republic of Korea; (P.B.P.); (R.T.M.)
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Hao MJ, Chen PN, Li HJ, Wu F, Zhang GY, Shao ZZ, Liu XP, Ma WZ, Xu J, Mahmud T, Lan WJ. β-Carboline Alkaloids From the Deep-Sea Fungus Trichoderma sp. MCCC 3A01244 as a New Type of Anti-pulmonary Fibrosis Agent That Inhibits TGF-β/Smad Signaling Pathway. Front Microbiol 2022; 13:947226. [PMID: 35966687 PMCID: PMC9366743 DOI: 10.3389/fmicb.2022.947226] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 06/23/2022] [Indexed: 11/28/2022] Open
Abstract
Pulmonary fibrosis is a scarring disease of lung tissue, which seriously threatens human health. Treatment options are currently limited, and effective strategies are still lacking. In the present study, 25 compounds were isolated from the deep-sea fungus Trichoderma sp. MCCC 3A01244. Among them, two β-carboline alkaloids, trichocarbolines A (1) and C (4) are new compounds. The chemical structures of these compounds were elucidated based on their HRESIMS, 1D and 2D NMR spectra, optical rotation calculation, and comparisons with data reported in the literature. Trichocarboline B [(+)- and (–)-enantiomers] had previously been synthesized, and this is its first report as a natural product. Their anti-pulmonary fibrosis (PF) activity and cytotoxicity were investigated. Compounds 1, 11, and 13 strongly inhibited TGF-β1-induced total collagen accumulation and showed low cytotoxicity against the HFL1 cell line. Further studies revealed compound 1 inhibited extracellular matrix (ECM) deposition by downregulating the expression of protein fibronectin (FN), proliferating cell nuclear antigen (PCNA), and α-smooth muscle actin (α-SMA). Mechanistic study revealed that compound 1 decreased pulmonary fibrosis by inhibiting the TGF-β/Smad signaling pathway. As a newly identified β-carboline alkaloid, compound 1 may be used as a lead compound for developing more efficient anti-pulmonary fibrosis agents.
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Affiliation(s)
- Meng-Jiao Hao
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Pei-Nan Chen
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Hou-Jin Li
- School of Chemistry, Sun Yat-sen University, Guangzhou, China
| | - Feng Wu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Guang-Yu Zhang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Zong-Ze Shao
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, China
| | - Xiu-Pian Liu
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, China
| | - Wen-Zhe Ma
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, Macau SAR, China
| | - Jun Xu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Taifo Mahmud
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, OR, United States
| | - Wen-Jian Lan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
- *Correspondence: Wen-Jian Lan,
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Abstract
Actinomycetes are natural architects of numerous secondary metabolites including antibiotics. With increased multidrug-resistant (MDR) pathogens, antibiotics that can combat such pathogens are urgently required to improve the health care system globally. The characterization of actinomycetes available in Nepal is still very much untouched which is the reason why this paper showcases the characterization of actinomycetes from Nepal based on their morphology, 16S rRNA gene sequencing, and metabolic profiling. Additionally, antimicrobial assays and liquid chromatography-high resolution mass spectrometry (LC-HRMS) of ethyl acetate extracts were performed. In this study, we employed a computational-based dereplication strategy for annotating molecules which is also time-efficient. Molecular annotation was performed through the GNPS server, the SIRIUS platform, and the available databases to predict the secondary metabolites. The sequencing of the 16S rRNA gene revealed that the isolates BN6 and BN14 are closely related to Streptomyces species. BN14 showed broad-spectrum antibacterial activity with the zone of inhibition up to 30 mm against Staphylococcus aureus (MIC: 0.3051 µg/mL and MBC: 9.7656 µg/mL) and Shigella sonnei (MIC: 0.3051 µg/mL and MBC: 4.882 µg/mL). Likewise, BN14 also displayed significant inhibition to Acinetobacter baumannii, Klebsiella pneumoniae, and Salmonella typhi. GNPS approach suggested that the extracts of BN6 and BN14 consisted of diketopiperazines ((cyclo(D-Trp-L-Pro), cyclo(L-Leu-L-4-hydroxy-Pro), cyclo(L-Phe-D-Pro), cyclo(L-Trp-L-Pro), cyclo(L-Val-L-Pro)), and polypeptide antibiotics (actinomycin D and X2). Additional chemical scaffolds such as bacterial alkaloids (bohemamine, venezueline B, and G), anthramycin-type antibiotics (abbeymycin), lipase inhibitor (ebelactone B), cytocidal (oxopropaline D), antifungal and antitumor antibiotics (reductiomycin, streptimidone, deoxynybomycin), alaremycin, fumaramidmycin, anisomycin, and others were also annotated, which were further confirmed by using the SIRIUS platform, and literature survey. Thus, the bioprospecting of natural products from Streptomyces species from Nepal could be a potential source for the discovery of clinically significant and new antimicrobial agents in the future.
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Wang X, Elshahawi SI, Ponomareva LV, Ye Q, Liu Y, Copley GC, Hower JC, Hatcher BE, Kharel MK, Van Lanen SG, She QB, Voss SR, Thorson JS, Shaaban KA. Structure Determination, Functional Characterization, and Biosynthetic Implications of Nybomycin Metabolites from a Mining Reclamation Site-Associated Streptomyces. JOURNAL OF NATURAL PRODUCTS 2019; 82:3469-3476. [PMID: 31833370 PMCID: PMC7084111 DOI: 10.1021/acs.jnatprod.9b01015] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
We report the isolation and characterization of three new nybomycins (nybomycins B-D, 1-3) and six known compounds (nybomycin, 4; deoxynyboquinone, 5; α-rubromycin, 6; β-rubromycin, 7; γ-rubromycin, 8; and [2α(1E,3E),4β]-2-(1,3-pentadienyl)-4-piperidinol, 9) from the Rock Creek (McCreary County, KY) underground coal mine acid reclamation site isolate Streptomyces sp. AD-3-6. Nybomycin D (3) and deoxynyboquinone (5) displayed moderate (3) to potent (5) cancer cell line cytotoxicity and displayed weak to moderate anti-Gram-(+) bacterial activity, whereas rubromycins 6-8 displayed little to no cancer cell line cytotoxicity but moderate to potent anti-Gram-(+) bacterial and antifungal activity. Assessment of the impact of 3 or 5 cancer cell line treatment on 4E-BP1 phosphorylation, a predictive marker of ROS-mediated control of cap-dependent translation, also revealed deoxynyboquinone (5)-mediated downstream inhibition of 4E-BP1p. Evaluation of 1-9 in a recently established axolotl embryo tail regeneration assay also highlighted the prototypical telomerase inhibitor γ-rubromycin (8) as a new inhibitor of tail regeneration. Cumulatively, this work highlights an alternative nybomycin production strain, a small set of new nybomycin metabolites, and previously unknown functions of rubromycins (antifungal activity and inhibition of tail regeneration) and also provides a basis for revision of the previously proposed nybomycin biosynthetic pathway.
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Affiliation(s)
- Xiachang Wang
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, People’s Republic of China
- Center for Pharmaceutical Research and Innovation, University of Kentucky, Lexington, Kentucky 40536, United States
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Sherif I. Elshahawi
- Center for Pharmaceutical Research and Innovation, University of Kentucky, Lexington, Kentucky 40536, United States
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
- Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Irvine, California 92618, United States
| | - Larissa V. Ponomareva
- Center for Pharmaceutical Research and Innovation, University of Kentucky, Lexington, Kentucky 40536, United States
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Qing Ye
- Markey Cancer Center, Department of Pharmacology and Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Yang Liu
- Center for Pharmaceutical Research and Innovation, University of Kentucky, Lexington, Kentucky 40536, United States
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Gregory C. Copley
- Center for Applied Energy Research, University of Kentucky, Lexington, Kentucky 40511, United States
| | - James C. Hower
- Center for Applied Energy Research, University of Kentucky, Lexington, Kentucky 40511, United States
| | - Bruce E. Hatcher
- Division of Water, Kentucky Energy and Environment Cabinet, 2642 Russellville Road, Bowling Green, Kentucky 42101, United States
| | - Madan K. Kharel
- School of Pharmacy, University of Maryland Eastern Shore, Princess Anne, Maryland 21853, United States
| | - Steven G. Van Lanen
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Qing-Bai She
- Markey Cancer Center, Department of Pharmacology and Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, Kentucky 40536, United States
| | - S. Randal Voss
- Department of Neuroscience, University of Kentucky, Lexington, Kentucky 40536, United States
- Ambystoma Genetic Stock Center, University of Kentucky, Lexington, Kentucky 40536, United States
- Spinal Cord and Brain Injury Research Center, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Jon S. Thorson
- Center for Pharmaceutical Research and Innovation, University of Kentucky, Lexington, Kentucky 40536, United States
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Khaled A. Shaaban
- Center for Pharmaceutical Research and Innovation, University of Kentucky, Lexington, Kentucky 40536, United States
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
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Begum Ahil S, Hira K, Shaik AB, Pal PP, Kulkarni OP, Araya H, Fujimoto Y. l-Proline-based-cyclic dipeptides from Pseudomonas sp. (ABS-36) inhibit pro-inflammatory cytokines and alleviate crystal-induced renal injury in mice. Int Immunopharmacol 2019; 73:395-404. [DOI: 10.1016/j.intimp.2019.05.044] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 05/22/2019] [Accepted: 05/22/2019] [Indexed: 11/16/2022]
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Braesel J, Lee JH, Arnould B, Murphy BT, Eustáquio AS. Diazaquinomycin Biosynthetic Gene Clusters from Marine and Freshwater Actinomycetes. JOURNAL OF NATURAL PRODUCTS 2019; 82:937-946. [PMID: 30896942 PMCID: PMC6902439 DOI: 10.1021/acs.jnatprod.8b01028] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Tuberculosis is an infectious disease of global concern. Members of the diazaquinomycin (DAQ) class of natural products have shown potent and selective activity against drug-resistant Mycobacterium tuberculosis. However, poor solubility has prevented further development of this compound class. Understanding DAQ biosynthesis may provide a viable route for the generation of derivatives with improved properties. We have sequenced the genomes of two actinomycete bacteria that produce distinct DAQ derivatives. While software tools for automated biosynthetic gene cluster (BGC) prediction failed to detect DAQ BGCs, comparative genomics using MAUVE alignment led to the identification of putative BGCs in the marine Streptomyces sp. F001 and in the freshwater Micromonospora sp. B006. Deletion of the identified daq BGC in strain B006 using CRISPR-Cas9 genome editing abolished DAQ production, providing experimental evidence for BGC assignment. A complete model for DAQ biosynthesis is proposed based on the genes identified. Insufficient knowledge of natural product biosynthesis is one of the major challenges of productive genome mining approaches. The results reported here fill a gap in knowledge regarding the genetic basis for the biosynthesis of DAQ antibiotics. Moreover, identification of the daq BGC shall enable future generations of improved derivatives using biosynthetic methods.
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Affiliation(s)
- Jana Braesel
- Department of Medicinal Chemistry and Pharmacognosy and Center for Biomolecular Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Jung-Ho Lee
- Department of Medicinal Chemistry and Pharmacognosy and Center for Biomolecular Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Benoit Arnould
- Department of Medicinal Chemistry and Pharmacognosy and Center for Biomolecular Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Brian T. Murphy
- Department of Medicinal Chemistry and Pharmacognosy and Center for Biomolecular Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Alessandra S. Eustáquio
- Department of Medicinal Chemistry and Pharmacognosy and Center for Biomolecular Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60607, USA
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Elinson MN, Ryzhkov FV, Nasybullin RF, Vereshchagin AN, Egorov MP. Fast Efficient and General PASE Approach to Medicinally Relevant 4H,5H-Pyrano-[4,3-b]pyran-5-one and 4,6-Dihydro-5H-pyrano-[3,2-c]pyridine-5-one Scaffolds. Helv Chim Acta 2016. [DOI: 10.1002/hlca.201600150] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Michail N. Elinson
- N. D. Zelinsky Institute of Organic Chemistry; Leninsky Prospect 47 119991 Moscow Russia
| | - Fedor V. Ryzhkov
- N. D. Zelinsky Institute of Organic Chemistry; Leninsky Prospect 47 119991 Moscow Russia
| | - Ruslan F. Nasybullin
- N. D. Zelinsky Institute of Organic Chemistry; Leninsky Prospect 47 119991 Moscow Russia
| | | | - Mikhail P. Egorov
- N. D. Zelinsky Institute of Organic Chemistry; Leninsky Prospect 47 119991 Moscow Russia
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Endophytic Streptomyces in the traditional medicinal plant Arnica montana L.: secondary metabolites and biological activity. Antonie van Leeuwenhoek 2015; 108:391-402. [PMID: 26036671 DOI: 10.1007/s10482-015-0492-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Accepted: 05/24/2015] [Indexed: 10/23/2022]
Abstract
Arnica montana L. is a medical plant of the Asteraceae family and grows preferably on nutrient poor soils in mountainous environments. Such surroundings are known to make plants dependent on symbiosis with other organisms. Up to now only arbuscular mycorrhizal fungi were found to act as endophytic symbiosis partners for A. montana. Here we identified five Streptomyces strains, microorganisms also known to occur as endophytes in plants and to produce a huge variety of active secondary metabolites, as inhabitants of A. montana. The secondary metabolite spectrum of these strains does not contain sesquiterpene lactones, but consists of the glutarimide antibiotics cycloheximide and actiphenol as well as the diketopiperazines cyclo-prolyl-valyl, cyclo-prolyl-isoleucyl, cyclo-prolyl-leucyl and cyclo-prolyl-phenylalanyl. Notably, genome analysis of one strain was performed and indicated a huge genome size with a high number of natural products gene clusters among which genes for cycloheximide production were detected. Only weak activity against the Gram-positive bacterium Staphylococcus aureus was revealed, but the extracts showed a marked cytotoxic activity as well as an antifungal activity against Candida parapsilosis and Fusarium verticillioides. Altogether, our results provide evidence that A. montana and its endophytic Streptomyces benefit from each other by completing their protection against competitors and pathogens and by exchanging plant growth promoting signals with nutrients.
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Wang RP, Lin HW, Li LZ, Gao PY, Xu Y, Song SJ. Monoindole alkaloids from a marine sponge Mycale fibrexilis. BIOCHEM SYST ECOL 2012. [DOI: 10.1016/j.bse.2012.03.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Borthwick AD. 2,5-Diketopiperazines: synthesis, reactions, medicinal chemistry, and bioactive natural products. Chem Rev 2012; 112:3641-716. [PMID: 22575049 DOI: 10.1021/cr200398y] [Citation(s) in RCA: 611] [Impact Index Per Article: 50.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Bair JS, Palchaudhuri R, Hergenrother PJ. Chemistry and Biology of Deoxynyboquinone, a Potent Inducer of Cancer Cell Death. J Am Chem Soc 2010; 132:5469-78. [DOI: 10.1021/ja100610m] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Joseph S. Bair
- Department of Chemistry, Roger Adams Laboratory, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801
| | - Rahul Palchaudhuri
- Department of Chemistry, Roger Adams Laboratory, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801
| | - Paul J. Hergenrother
- Department of Chemistry, Roger Adams Laboratory, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801
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Yang B, Dong J, Zhou X, Yang X, Lee K, Wang L, Zhang S, Liu Y. Proline-Containing Dipeptides from a Marine Sponge of aCallyspongiaSpecies. Helv Chim Acta 2009. [DOI: 10.1002/hlca.200800422] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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13
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Hsieh PW, Hsu LC, Lai CH, Wu CC, Hwang TL, Lin YK, Wu YC. Evaluation of the bioactivities of extracts of endophytes isolated from Taiwanese herbal plants. World J Microbiol Biotechnol 2009. [DOI: 10.1007/s11274-009-0036-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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R. Pettit G, Du J, K. Pettit R, C. Knight J, L. Doubek D. Antineoplastic Agents. 575. The Fungus Aspergillus phoenicis. HETEROCYCLES 2009. [DOI: 10.3987/com-08-s(d)63] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Pettit GR, Hogan F, Xu JP, Tan R, Nogawa T, Cichacz Z, Pettit RK, Du J, Ye QH, Cragg GM, Herald CL, Hoard MS, Goswami A, Searcy J, Tackett L, Doubek DL, Williams L, Hooper JNA, Schmidt JM, Chapuis JC, Tackett DN, Craciunescu F. Antineoplastic agents. 536. New sources of naturally occurring cancer cell growth inhibitors from marine organisms, terrestrial plants, and microorganisms(1a,). JOURNAL OF NATURAL PRODUCTS 2008; 71:438-444. [PMID: 18327911 DOI: 10.1021/np700738k] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Bioassay-guided fractionation of extracts of various plants, marine organisms, and microorganisms has led to the discovery of new natural sources of a number of known compounds that have significant biological activity. The isolation of interesting and valuable cancer cell growth inhibitors including majusculamide C ( 1), axinastatin 5 ( 5), bengazoles A ( 6), B ( 7), and E ( 8), manzamine A ( 10), jaspamide ( 11), and neoechinulin A ( 19) has been summarized.
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Affiliation(s)
- George R Pettit
- Department of Chemstry and Biochemistry, Arizona State University, Tempe, Arizona 85287-2404, USA.
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Magedov IV, Manpadi M, Evdokimov NM, Elias EM, Rozhkova E, Ogasawara MA, Bettale JD, Przheval’skii NM, Rogelj S, Kornienko A. Antiproliferative and apoptosis inducing properties of pyrano[3,2-c]pyridones accessible by a one-step multicomponent synthesis. Bioorg Med Chem Lett 2007; 17:3872-6. [PMID: 17512729 PMCID: PMC3383048 DOI: 10.1016/j.bmcl.2007.05.004] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2007] [Revised: 04/29/2007] [Accepted: 05/01/2007] [Indexed: 11/26/2022]
Abstract
4-Arylpyrano-[3,2-c]-pyridones have been prepared by a one-step cyclocondensation of 4-hydroxy-1,6-dimethylpyridin-2(1H)-one with various substituted benzaldehydes and malononitrile. These heterocycles exhibit micromolar and submicromolar antiproliferative activity in HeLa and induce apoptosis in Jurkat cell lines. Structure-activity studies performed on a small library of these compounds show a pronounced cytotoxicity enhancing effect of the bromo substituent at the meta position of the C4 aromatic moiety.
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Affiliation(s)
- Igor V. Magedov
- Department of Organic Chemistry, Timiryazev Agriculture Academy, Moscow 127550, Russia
- Intelbioscan Ltd., Timiryazevsky Proesd 2, Moscow 127550, Russia
- Corresponding authors. Tel.: +1 505 835 5884; fax: +1 505 835 5364; ,
| | - Madhuri Manpadi
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, USA
| | - Nikolai M. Evdokimov
- Department of Organic Chemistry, Timiryazev Agriculture Academy, Moscow 127550, Russia
| | - Eerik M. Elias
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, USA
| | - Elena Rozhkova
- Department of Organic Chemistry, Timiryazev Agriculture Academy, Moscow 127550, Russia
| | - Marcia A. Ogasawara
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, USA
| | - Jennifer D. Bettale
- Department of Biology, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, USA
| | | | - Snezna Rogelj
- Department of Biology, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, USA
| | - Alexander Kornienko
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, USA
- Corresponding authors. Tel.: +1 505 835 5884; fax: +1 505 835 5364; ,
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