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Feng YQ, Zhang P, Jian JZ, Wang ZW, Tian XL, Luo GY, Yang WD. Study on 2-arylbenzo[ b]furans from Itea omeiensis and their fragmentation patterns with Q-Orbitrap mass spectrometry. Nat Prod Res 2024; 38:3118-3129. [PMID: 37245178 DOI: 10.1080/14786419.2023.2216344] [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: 02/23/2023] [Revised: 04/24/2023] [Accepted: 05/10/2023] [Indexed: 05/29/2023]
Abstract
One new 2-arylbenzo[b]furan named iteafuranal F (1) as well as two known analogues (2-3) were isolated from the 95% EtOH extract of aerial parts of Itea omeiensis. Their chemical structures were constructed based on extensive analyses of UV, IR, 1D/2D NMR and HRMS spectra. Antioxidant assays revealed significant superoxide anion radical scavenging capacity of 1 with IC50 value of 0.66 mg/mL, which was comparable to the efficiency of positive control of luteolin. In addition, the preliminary MS fragmentation patterns in negative ion mode were established to distinguish 2-arylbenzo[b]furans with C-10 in different oxidation states: the characteristic loss of CO molecule [M-H-28]- was observed for 3-formyl-2-arylbenzo[b]furans, and the loss of CH2O fragment [M-H-30]- for 3-hydroxymethyl-2-arylbenzo[b]furans, and the loss of CO2 fragment [M-H-44]- for 2-arylbenzo[b]furan-3-carboxylic acids.
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Affiliation(s)
- Yun-Qian Feng
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, People's Republic of China
| | - Pan Zhang
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, People's Republic of China
| | - Jin-Zhen Jian
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, People's Republic of China
| | - Zhi-Wei Wang
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, People's Republic of China
| | - Xiao-Long Tian
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, People's Republic of China
| | - Guo-Yong Luo
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, People's Republic of China
| | - Wu-De Yang
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, People's Republic of China
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2
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Cai J, Zhou Q, Qi X, Zhang F, Yang J, Chen C, Zhang K, Chen Z, Luo HB, Liu Y, Huang YY, Zhou X. Discovery of Oxidized p-Terphenyls as Phosphodiesterase 4 Inhibitors from Marine-Derived Fungi. JOURNAL OF NATURAL PRODUCTS 2024; 87:1808-1816. [PMID: 38943602 DOI: 10.1021/acs.jnatprod.4c00422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/01/2024]
Abstract
Four new p-terphenyl derivatives, talaroterphenyls A-D (1-4), together with three biosynthetically related known ones (5-7), were obtained from the mangrove sediment-derived Talaromyces sp. SCSIO 41412. Compounds 1-3 are rare p-terphenyls, which are completely substituted on the central benzene ring by oxygen atoms; this is the first report of their isolation from natural sources. Their structures were elucidated through NMR spectroscopy, HRESIMS, and X-ray diffraction. Genome sequence analysis revealed that 1-7 were biosynthesized from tyrosine and phenylalanine, involving four key biosynthetic genes (ttpB-ttpE). These p-terphenyls (1-7) and 36 marine-derived terphenyl analogues (8-43) were screened for phosphodiesterase 4 (PDE4) inhibitory activities, and 1-5, 14, 17, 23, and 26 showed notable activities with IC50 values of 0.40-16 μM. The binding pattern of p-terphenyl inhibitors 1-3 with PDE4 were explored by molecular docking analysis. Talaroterphenyl A (1), with a low cytotoxicity, showed obvious anti-inflammatory activity in LPS-stimulated RAW264.7 cells. Furthermore, in the TGF-β1-induced medical research council cell strain-5 (MRC-5) pulmonary fibrosis model, 1 could down-regulate the expression levels of FN1, COL1, and α-SMA significantly at concentrations of 5-20 μM. This study suggests that the oxidized p-terphenyl 1, as a marine-derived PDE4 inhibitor, could be used as a promising antifibrotic agent.
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Affiliation(s)
- Jian Cai
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qian Zhou
- Key Laboratory of Tropical Biological Resources of Ministry of Education and Hainan Engineering Research Center for Drug Screening and Evaluation, School of Pharmaceutical Sciences, Hainan University, Haikou 570228, China
- Song Li' Academician Workstation of Hainan University (School of Pharmaceutical Sciences), Yazhou Bay, Sanya 572000, China
| | - Xin Qi
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Furong Zhang
- Key Laboratory of Tropical Biological Resources of Ministry of Education and Hainan Engineering Research Center for Drug Screening and Evaluation, School of Pharmaceutical Sciences, Hainan University, Haikou 570228, China
- Song Li' Academician Workstation of Hainan University (School of Pharmaceutical Sciences), Yazhou Bay, Sanya 572000, China
| | - Jiafan Yang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chunmei Chen
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Kai Zhang
- Key Laboratory of Tropical Biological Resources of Ministry of Education and Hainan Engineering Research Center for Drug Screening and Evaluation, School of Pharmaceutical Sciences, Hainan University, Haikou 570228, China
- Song Li' Academician Workstation of Hainan University (School of Pharmaceutical Sciences), Yazhou Bay, Sanya 572000, China
| | - Zhexin Chen
- Key Laboratory of Tropical Biological Resources of Ministry of Education and Hainan Engineering Research Center for Drug Screening and Evaluation, School of Pharmaceutical Sciences, Hainan University, Haikou 570228, China
- Song Li' Academician Workstation of Hainan University (School of Pharmaceutical Sciences), Yazhou Bay, Sanya 572000, China
| | - Hai-Bin Luo
- Key Laboratory of Tropical Biological Resources of Ministry of Education and Hainan Engineering Research Center for Drug Screening and Evaluation, School of Pharmaceutical Sciences, Hainan University, Haikou 570228, China
- Song Li' Academician Workstation of Hainan University (School of Pharmaceutical Sciences), Yazhou Bay, Sanya 572000, China
| | - Yonghong Liu
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Yi-You Huang
- Key Laboratory of Tropical Biological Resources of Ministry of Education and Hainan Engineering Research Center for Drug Screening and Evaluation, School of Pharmaceutical Sciences, Hainan University, Haikou 570228, China
- Song Li' Academician Workstation of Hainan University (School of Pharmaceutical Sciences), Yazhou Bay, Sanya 572000, China
| | - Xuefeng Zhou
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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3
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Guerra-Camacho MÁ, Magaña-Tzuc MC, Vargas-Díaz AA, Silva-Rojas HV, Gamboa-Angulo M. [Identification and antifungal activity of halophilic bacteria isolated from saline soils in Campeche, México]. Rev Argent Microbiol 2024; 56:298-311. [PMID: 38614909 DOI: 10.1016/j.ram.2024.02.004] [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: 06/19/2023] [Revised: 11/05/2023] [Accepted: 02/03/2024] [Indexed: 04/15/2024] Open
Abstract
Phytopathogenic fungi Alternaria alternata and Colletotrichum gloeosporioides cause diseases in plant tissues as well as significant postharvest losses. The use of chemical fungicides for their control has negative effects on health and the environment. Secondary metabolites from halophilic bacteria are a promising alternative for new antifungal compounds. In the present study, halophilic bacteria were isolated and characterized from two sites with saline soils called branquizales in Campeche, Mexico. A total of 64 bacteria were isolated. Agrobacterium, Bacillus, Inquilinus, Gracilibacillus, Metabacillus, Neobacillus, Paenibacillus, Priestia, Staphylococcus, Streptomyces and Virgibacillus were among the identified genera. The antifungal potential of the culture supernatant (CS) of 39 halophilic bacteria was investigated against C. gloeosporioides and A. alternata. The bacteria showing the greatest inhibition of mycelial growth corresponded to Bacillus subtilis CPO 4292, Metabacillus sp. CPO 4266, Bacillus sp. CPO 4295 and Bacillus sp. CPO 4279. The CS of Bacillus sp. CPO 4279 exhibited the highest activity and its ethyl acetate extract (AcOEt) inhibited the germination of C. gloeosporioides, with IC50 values of 8,630μg/ml and IC90 of 10,720μg/ml. The organic partition of the AcOEt extract led to three fractions, with acetonitrile (FAcB9) showing the highest antifungal activity, with values exceeding 66%. Halophilic bacteria from 'blanquizales' soils of the genus Bacillus sp. produce metabolites with antifungal properties that inhibit the phytopathogenic fungus C. gloeosporioides.
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Affiliation(s)
| | | | - Arely A Vargas-Díaz
- CONAHCYT-Colegio de Postgraduados, Champotón, Campus Campeche, Campeche, México.
| | - Hilda V Silva-Rojas
- Colegio de Postgraduados, Posgrado en Producción de Semillas, Campus Montecillo, Texcoco, Estado de México, México
| | - Marcela Gamboa-Angulo
- Unidad de Biotecnología, Centro de Investigación Científica de Yucatán, A.C., Mérida, Yucatán, México
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4
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Thompson TP, Gilmore BF. Exploring halophilic environments as a source of new antibiotics. Crit Rev Microbiol 2024; 50:341-370. [PMID: 37079280 DOI: 10.1080/1040841x.2023.2197491] [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: 09/16/2022] [Accepted: 03/25/2023] [Indexed: 04/21/2023]
Abstract
Microbial natural products from microbes in extreme environments, including haloarchaea, and halophilic bacteria, possess a huge capacity to produce novel antibiotics. Additionally, enhanced isolation techniques and improved tools for genomic mining have expanded the efficiencies in the antibiotic discovery process. This review article provides a detailed overview of known antimicrobial compounds produced by halophiles from all three domains of life. We summarize that while halophilic bacteria, in particular actinomycetes, contribute the vast majority of these compounds the importance of understudied halophiles from other domains of life requires additional consideration. Finally, we conclude by discussing upcoming technologies- enhanced isolation and metagenomic screening, as tools that will be required to overcome the barriers to antimicrobial drug discovery. This review highlights the potential of these microbes from extreme environments, and their importance to the wider scientific community, with the hope of provoking discussion and collaborations within halophile biodiscovery. Importantly, we emphasize the importance of bioprospecting from communities of lesser-studied halophilic and halotolerant microorganisms as sources of novel therapeutically relevant chemical diversity to combat the high rediscovery rates. The complexity of halophiles will necessitate a multitude of scientific disciplines to unravel their potential and therefore this review reflects these research communities.
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Affiliation(s)
- Thomas P Thompson
- Biofilm Research Group, School of Pharmacy, Queen's University Belfast, Belfast, UK
| | - Brendan F Gilmore
- Biofilm Research Group, School of Pharmacy, Queen's University Belfast, Belfast, UK
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5
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Ding W, Li Y, Li X, Yin J, Shi S, Tian X, Zhang S, Yin H. Discovery of a Novel Chromone Enantiomer and the Precursors of Nonactic Acid from the Coral-Reef-Derived Streptomyces sp. SCSIO 66814. Mar Drugs 2024; 22:181. [PMID: 38667798 PMCID: PMC11051294 DOI: 10.3390/md22040181] [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: 03/19/2024] [Revised: 04/07/2024] [Accepted: 04/15/2024] [Indexed: 04/28/2024] Open
Abstract
Three pairs of enantiomers (1-3)-the new 12R-aloesol (1a) and two new fatty acids (2 and 3)-and one new natural product (4) together three known compounds (5-7) were isolated from a coral-reef-derived Streptomyces sp. SCSIO 66814. Their structures were determined through extensive spectroscopic analysis, chiral analysis, and single-crystal X-ray diffraction data. Compounds 2 and 3 were presumed to be intermediates for further generating homononactic acid (5) and nonactic acid, and the latter two molecules were able to act as precursors to form macrotetrolides with remarkable biological activity. The isolation of related precursors, compounds 2-5, provided more evidence to support the proposal of a plausible biosynthetic pathway for nonactic acid and its homologs. Additionally, (+)-1 exhibited a weak activity against DPPH radicals.
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Affiliation(s)
- Wenping Ding
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; (W.D.); (Y.L.); (X.L.); (J.Y.); (S.S.); (X.T.)
| | - Yanqun Li
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; (W.D.); (Y.L.); (X.L.); (J.Y.); (S.S.); (X.T.)
| | - Xingyu Li
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; (W.D.); (Y.L.); (X.L.); (J.Y.); (S.S.); (X.T.)
| | - Jiajia Yin
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; (W.D.); (Y.L.); (X.L.); (J.Y.); (S.S.); (X.T.)
| | - Songbiao Shi
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; (W.D.); (Y.L.); (X.L.); (J.Y.); (S.S.); (X.T.)
| | - Xinpeng Tian
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; (W.D.); (Y.L.); (X.L.); (J.Y.); (S.S.); (X.T.)
| | - Si Zhang
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; (W.D.); (Y.L.); (X.L.); (J.Y.); (S.S.); (X.T.)
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
| | - Hao Yin
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; (W.D.); (Y.L.); (X.L.); (J.Y.); (S.S.); (X.T.)
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
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6
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Feng Y, Jian J, Cheng L, Luo G, Yang W. Two New Compounds Isolated from the Itea omeiensis and Their Anti-oxidant Activities. Chem Biodivers 2024; 21:e202301881. [PMID: 38116852 DOI: 10.1002/cbdv.202301881] [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: 11/25/2023] [Revised: 12/18/2023] [Accepted: 12/18/2023] [Indexed: 12/21/2023]
Abstract
Two new compounds (1-2) together with ten known compounds (3-12) were isolated for the first time from the 95 % EtOH extract of aerial parts of Itea omeiensis. Their structures were elucidated based on extensive spectroscopic analyses and comparison with published data. The structure of 1 was further confirmed through single-crystal X-ray diffraction analysis, and circular dichroism (CD) spectrum in combination with acid hydrolysis was employed for the absolute configuration determination of 2. Compound 1 was the first 2-arylbenzo[b]furan with an extra six-membered lactone ring from Itea plants. Anti-oxidant assays indicated that compound 1 possessed significant radical scavenging effects on 1,1-Diphenyl-2-picrylhydrazyl (DPPH) and 2,2'-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS⋅+ ) with IC50 values of 0.14 and 0.06 mg/mL, respectively, which were comparable to the positive control of ascorbic acid. However, no obvious anti-hepatocellular carcinoma activity was observed for compounds 1 and 2.
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Affiliation(s)
- Yunqian Feng
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, 4th Dongqing Road, 550025, Guiyang, China
| | - Jinzhen Jian
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, 4th Dongqing Road, 550025, Guiyang, China
| | - Longdie Cheng
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, 4th Dongqing Road, 550025, Guiyang, China
| | - Guoyong Luo
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, 4th Dongqing Road, 550025, Guiyang, China
| | - Wude Yang
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, 4th Dongqing Road, 550025, Guiyang, China
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7
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Xu FF, Jian JZ, Li YJ, Wang ZW, Luo GY, Yang WD. Two new 2-arylbenzo[ b]furans from Itea indochinensis and their anti-hepatocellular carcinoma and anti-oxidant effects. Nat Prod Res 2023:1-9. [PMID: 37665092 DOI: 10.1080/14786419.2023.2252975] [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: 05/24/2023] [Revised: 08/16/2023] [Accepted: 08/24/2023] [Indexed: 09/05/2023]
Abstract
Two new 2-arylbenzo[b]furans (1-2) and ten known compounds (3-12) were identified from the 95% EtOH extract of the branches and leaves of Itea indochinensis for the first time. Their structures were determined mainly based on extensive analyses of UV, IR, 1D/2D NMR and HRMS spectra. The results of MTT assays demonstrated the anti-tumor potential of compound 1 with good selectivity, which displayed moderate inhibitory effects on proliferation of SK-hep-1 cells with IC50 value of 22.3 μM, while weak inhibitory effect on proliferation of HepG2 cells with an inhibition rate of 25% at 20 μM, and no obviously inhibitory effect on proliferation of A549 cells at 20 μM. In addition, compound 1 exhibited its significant scavenging capacity on ABTS·+ free radical with an IC50 value of 0.11 mg/mL, while weak scavenging effects on DPPH and O2·- radicals with scavenging ratios of 32.93% and 21.49% at 1 mg/mL, respectively.
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Affiliation(s)
- Fang-Fang Xu
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, People's Republic of China
| | - Jin-Zhen Jian
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, People's Republic of China
| | - Yi-Jv Li
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, People's Republic of China
| | - Zhi-Wei Wang
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, People's Republic of China
| | - Guo-Yong Luo
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, People's Republic of China
| | - Wu-De Yang
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, People's Republic of China
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8
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Shi T, Wang H, Li YJ, Wang YF, Pan Q, Wang B, Shang EL. Genus Acrostalagmus: A Prolific Producer of Natural Products. Biomolecules 2023; 13:1191. [PMID: 37627256 PMCID: PMC10452555 DOI: 10.3390/biom13081191] [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: 06/30/2023] [Revised: 07/26/2023] [Accepted: 07/28/2023] [Indexed: 08/27/2023] Open
Abstract
Acrostalagmus is known for its ability to produce numerous bioactive natural products, making it valuable in drug development. This review provides information on the sources, distribution, chemical structure types, biosynthesis, and biological activities of the compounds isolated from the genus Acrostalagmus in the family Plectosphaerellaceae from 1969 to 2022. The results show that 50% of the compounds isolated from Acrostalagmus are new natural products, and 82% of the natural products derived from this genus are from the marine Acrostalagmus. The compounds isolated from Acrostalagmus exhibit diverse structures, with alkaloids being of particular importance, accounting for 56% of the natural products derived from this genus. Furthermore, within the alkaloid class, 61% belong to the epipolythiodioxopiperazine family, highlighting the significance of epipolythiodioxopiperazine as a key characteristic structure within Acrostalagmus. Seventy-two percent of natural products derived from Acrostalagmus display bioactivities, with 50% of the bioactive compounds exhibiting more significant or comparable activities than their positive controls. Interestingly, 89% of potent active compounds are derived from marine fungi, demonstrating their promising potential for development. These findings underscore Acrostalagmus, particularly the marine-derived genus Acrostalagmusas, a valuable source of new bioactive secondary metabolites, and emphasize the vast resource importance of the ocean.
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Affiliation(s)
- Ting Shi
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China; (T.S.); (H.W.); (Y.-J.L.); (Y.-F.W.); (Q.P.)
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, Qingdao 266237, China
| | - Han Wang
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China; (T.S.); (H.W.); (Y.-J.L.); (Y.-F.W.); (Q.P.)
| | - Yan-Jing Li
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China; (T.S.); (H.W.); (Y.-J.L.); (Y.-F.W.); (Q.P.)
| | - Yi-Fei Wang
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China; (T.S.); (H.W.); (Y.-J.L.); (Y.-F.W.); (Q.P.)
| | - Qun Pan
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China; (T.S.); (H.W.); (Y.-J.L.); (Y.-F.W.); (Q.P.)
| | - Bo Wang
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China; (T.S.); (H.W.); (Y.-J.L.); (Y.-F.W.); (Q.P.)
| | - Er-Lei Shang
- School of Life Sciences, Shandong University, Qingdao 266237, China
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9
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Role of Resuscitation Promoting Factor-like Protein from Nocardiopsis halophila. Microorganisms 2023; 11:microorganisms11020485. [PMID: 36838450 PMCID: PMC9966590 DOI: 10.3390/microorganisms11020485] [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: 12/20/2022] [Revised: 02/11/2023] [Accepted: 02/13/2023] [Indexed: 02/18/2023] Open
Abstract
Resuscitation promoting factors (Rpf), a class of proteins secreted by gram-positive bacteria including actinobacteria, promote the resuscitation of dormant bacteria and spore germination. Here, we describe the reconstitution of the resuscitation promoting activity of the Rpf protein from Nocardiopsis halophila CGMCC 4.1195Tin vitro and in vivo. The Rpf protein was expressed in the host Escherichia coli BL21 codon plus (DE3) and was confirmed to have a significant resuscitation effect on the viable but non-culturable (VBNC) N. halophila. Subsequently, the rpf gene of N. halophila was knocked out. We found that the growth rate of the mutant strain (Δrpf) was slower than that of the wild strain, and the former produced significantly shorter spores than the wild-type strain. Our results confirmed the activity of the Rpf protein in N. halophila to promote dormant bacteria resuscitation. This study will lay the foundation for the application of the Rpf protein from N. halophila to exploit actinomycetes resources.
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10
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Feng Y, Zhang P, Yang Y, Wang Z, Luo G, Yang W. Qualitative and quantitative method for quality control of Itea ilicifolia based on antioxidant Q-markers. Biomed Chromatogr 2023; 37:e5594. [PMID: 36735642 DOI: 10.1002/bmc.5594] [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: 11/17/2022] [Revised: 12/22/2022] [Accepted: 02/01/2023] [Indexed: 02/04/2023]
Abstract
Itea ilicifolia Oliv is a folk medicine with antioxidant potential. In this study, the fingerprints of 14 batches of I. ilicifolia were established by HPLC with 17 common peaks. The similarities evaluated by Similarity Evaluation System for Chromatographic Fingerprint of Chinese Materia (version 2012) were >0.89. Ten compounds were identified with definite structures by comparing the retention time and characteristic UV spectral pattern with those of reference substances. The antioxidant capacities of 14 batches of I. ilicifolia were evaluated based on O2 ·- , DPPH and ABTS·+ radical scavenging assays in combination with ferric reducing antioxidant power assay. Via multivariate statistical analyses of gray relation analysis, bivariate correlation analysis and partial least squares regression analysis, a study on the spectrum-effect relationship was then performed to screen eight peaks as the antioxidant Q-markers of I. ilicifolia. The contents of representative antioxidant Q-markers (isoorientin, orientin, vitexin, isovitexin and iteafuranal A) in samples were accurately determined to be 0.054-0.118%, 0.034-0.080%, 0.018-0.055%, 0.031-0.091% and 0.033-0.140%, respectively. The qualitative and quantitative analytical method based on Q-markers helps to control the antioxidant quality of I. ilicifolia, which will lay the foundation to promote the rational utilization of I. ilicifolia in curing diseases related to oxidative stress.
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Affiliation(s)
- Yunqian Feng
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Pan Zhang
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Yaxin Yang
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Zhiwei Wang
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Guoyong Luo
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Wude Yang
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, China
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11
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Jiang P, Luo J, Jiang Y, Zhang L, Jiang L, Teng B, Niu H, Zhang D, Lei H. Anti-Inflammatory Polyketide Derivatives from the Sponge-Derived Fungus Pestalotiopsis sp. SWMU-WZ04-2. Mar Drugs 2022; 20:711. [PMID: 36421989 PMCID: PMC9697532 DOI: 10.3390/md20110711] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/05/2022] [Accepted: 11/09/2022] [Indexed: 05/31/2024] Open
Abstract
Five undescribed polyketide derivatives, pestaloketides A-E (1-5), along with eleven known analogues (6-16), were isolated from the sponge-derived fungus Pestalotiopsis sp. Their structures, including absolute configurations, were elucidated by analyses of NMR spectroscopic HRESIMS data and electronic circular dichroism (ECD) calculations. Compounds 5, 6, 9, and 14 exhibited weak cytotoxicities against four human cancer cell lines, with IC50 values ranging from 22.1 to 100 μM. Pestaloketide A (1) is an unusual polyketide, featuring a rare 5/10/5-fused ring system. Pestaloketides A (1) and B (2) exhibited moderately inhibited LPS-induced NO production activity, with IC50 values of 23.6 and 14.5 μM, respectively, without cytotoxicity observed. Preliminary bioactivity evaluations and molecular docking analysis indicated that pestaloketides A (1) and B (2) had the potential to be developed into anti-inflammatory activity drug leads.
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Affiliation(s)
- Peng Jiang
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China
- Key Laboratory of Tropical Marine Bioresources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
- University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China
| | - Jinfeng Luo
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Yao Jiang
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Liping Zhang
- Key Laboratory of Tropical Marine Bioresources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Liyuan Jiang
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Baorui Teng
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Hong Niu
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Dan Zhang
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Hui Lei
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China
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12
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Chen Y, Ren J, Yang R, Li J, Huang SX, Yan Y. Isolation and biosynthesis of daturamycins from Streptomyces sp. KIB-H1544. Beilstein J Org Chem 2022; 18:1009-1016. [PMID: 36051563 PMCID: PMC9379647 DOI: 10.3762/bjoc.18.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 07/25/2022] [Indexed: 11/23/2022] Open
Abstract
Two novel diarylcyclopentenones daturamycin A and B (1 and 2), and one new p-terphenyl daturamycin C (3), along with three known congeners (4-6), were isolated from a rhizosphere soil-derived Streptomyces sp. KIB-H1544. The structures of new compounds were elucidated via a joint use of spectroscopic analyses and single-crystal X-ray diffractions. Compounds 1 and 2 belong to a rare class of tricyclic 6/5/6 diarylcyclopentenones, and compounds 3-6 possess a C-18 tricyclic aromatic skeleton. The biosynthetic gene cluster of daturamycins was identified through gene knockout and biochemical characterization experiments and the biosynthetic pathway of daturamycins was proposed.
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Affiliation(s)
- Yin Chen
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinqiu Ren
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Ruimin Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Jie Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Sheng-Xiong Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Yijun Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
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13
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Metabolic Profile, Biotransformation, Docking Studies and Molecular Dynamics Simulations of Bioactive Compounds Secreted by CG3 Strain. Antibiotics (Basel) 2022; 11:antibiotics11050657. [PMID: 35625301 PMCID: PMC9137728 DOI: 10.3390/antibiotics11050657] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 05/09/2022] [Accepted: 05/10/2022] [Indexed: 02/01/2023] Open
Abstract
Actinobacteria isolated from untapped environments and exposed to extreme conditions such as saltpans are a promising source of novel bioactive compounds. These microorganisms can provide new molecules through either the biosynthetic pathway or the biotransformation of organic molecules. In the present study, we performed a chemical metabolic screening of secondary metabolites secreted by the new strain CG3, which was isolated from a saltpan located in the Sahara of Algeria, via high-performance liquid chromatography coupled with high-resolution mass spectrometry (HPLC-ESI-HRMS). The results indicated that this strain produced five new polyene macrolactams, kenalactams A–E, along with two known compounds, mitomycin C and 6″-hydroxy-4,2′,3′,4″ tetramethoxy-p-terphenyl. Furthermore, the CG3 isolate could have excellent properties for converting the aglycone isoflavone glycitein to the compounds 6,7-dimethoxy-3-(4-methoxyphenyl)chromen-4-one (50) and 6,7-dimethoxy-3-phenylchromen-4-one (54), and the isoflavone genistein can be converted to 5,7-dimethoxy-3-(4-methoxyphenyl)chromen-4-one (52). Docking studies and molecular dynamics simulations indicated that these three isoflavones, generated via biotransformation, are potent inhibitors of the target protein aromatase (CYP19A1); consequently, they can be used to prevent breast cancer risk in postmenopausal women.
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Recent Antimicrobial Responses of Halophilic Microbes in Clinical Pathogens. Microorganisms 2022; 10:microorganisms10020417. [PMID: 35208871 PMCID: PMC8874722 DOI: 10.3390/microorganisms10020417] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 02/07/2022] [Accepted: 02/08/2022] [Indexed: 01/27/2023] Open
Abstract
Microbial pathogens that cause severe infections and are resistant to drugs are simultaneously becoming more active. This urgently calls for novel effective antibiotics. Organisms from extreme environments are known to synthesize novel bioprospecting molecules for biomedical applications due to their peculiar characteristics of growth and physiological conditions. Antimicrobial developments from hypersaline environments, such as lagoons, estuaries, and salterns, accommodate several halophilic microbes. Salinity is a distinctive environmental factor that continuously promotes the metabolic adaptation and flexibility of halophilic microbes for their survival at minimum nutritional requirements. A genetic adaptation to extreme solar radiation, ionic strength, and desiccation makes them promising candidates for drug discovery. More microbiota identified via sequencing and ‘omics’ approaches signify the hypersaline environments where compounds are produced. Microbial genera such as Bacillus, Actinobacteria, Halorubrum and Aspergillus are producing a substantial number of antimicrobial compounds. Several strategies were applied for producing novel antimicrobials from halophiles including a consortia approach. Promising results indicate that halophilic microbes can be utilised as prolific sources of bioactive metabolites with pharmaceutical potentialto expand natural product research towards diverse phylogenetic microbial groups which inhabit salterns. The present study reviews interesting antimicrobial compounds retrieved from microbial sources of various saltern environments, with a discussion of their potency in providing novel drugs against clinically drug-resistant microbes.
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15
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Zhou G, Zhu T, Che Q, Zhang G, Li D. Structural diversity and biological activity of natural p-terphenyls. MARINE LIFE SCIENCE & TECHNOLOGY 2022; 4:62-73. [PMID: 37073357 PMCID: PMC10077223 DOI: 10.1007/s42995-021-00117-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 07/26/2021] [Indexed: 05/03/2023]
Abstract
p-Terphenyls are aromatic compounds consisting of a central benzene ring substituted with two phenyl groups, and they are mainly isolated from terrestrial and marine organisms. The central ring of p-Terphenyls is usually modified into more oxidized forms, e.g., para quinone and phenols. In some cases, additional ring systems were observed on the terphenyl-type core structure or between two benzene moieties. p-Terphenyls have been reported to have cytotoxic, antimicrobial, antioxidant and α-glucosidase inhibitory effects. In this review, we will mainly summarize the structural diversity and biological activity of naturally occurring p-Terphenyls referring to the research works published before. Supplementary Information The online version contains supplementary material available at 10.1007/s42995-021-00117-8.
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Affiliation(s)
- Guoliang Zhou
- Key Laboratory of Marine Drugs, School of Medicine and Pharmacy, Chinese Ministry of Education, Ocean University of China, Qingdao, 266003 China
| | - Tianjiao Zhu
- Key Laboratory of Marine Drugs, School of Medicine and Pharmacy, Chinese Ministry of Education, Ocean University of China, Qingdao, 266003 China
| | - Qian Che
- Key Laboratory of Marine Drugs, School of Medicine and Pharmacy, Chinese Ministry of Education, Ocean University of China, Qingdao, 266003 China
| | - Guojian Zhang
- Key Laboratory of Marine Drugs, School of Medicine and Pharmacy, Chinese Ministry of Education, Ocean University of China, Qingdao, 266003 China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237 China
| | - Dehai Li
- Key Laboratory of Marine Drugs, School of Medicine and Pharmacy, Chinese Ministry of Education, Ocean University of China, Qingdao, 266003 China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237 China
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16
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Shahid M, Singh BN, Verma S, Choudhary P, Das S, Chakdar H, Murugan K, Goswami SK, Saxena AK. Bioactive antifungal metabolites produced by Streptomyces amritsarensis V31 help to control diverse phytopathogenic fungi. Braz J Microbiol 2021; 52:1687-1699. [PMID: 34591293 PMCID: PMC8578481 DOI: 10.1007/s42770-021-00625-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 09/19/2021] [Indexed: 10/20/2022] Open
Abstract
Actinomycetes due to their unique repertoire of antimicrobial secondary metabolites can be an eco-friendly and sustainable alternative to agrochemicals to control plant pathogens. In the present study, antifungal activity of twenty different actinomycetes was evaluated via dual culture plate assay against six different phytopathogens, viz., Alternaria alternata, Aspergillus flavus, Fusarium oxysporum f. sp. lycopersici, Sarocladium oryzae, Sclerotinia sclerotiorum, and Rhizoctonia solani. Two potential isolates, Streptomyces amritsarensis V31 and Kribella karoonensis MSCA185 showing high antifungal activity against all six fungal pathogens, were further evaluated after extraction of bioactive metabolites in different solvents. Metabolite extracted from S. amritsarensis V31 in different solvents inhibited Rhizoctonia solani (7.5-65%), Alternaria alternata (5.5-52.7%), Aspergillus flavus (8-30.7%), Fusarium oxysporum f. sp. lycopersici (25-44%), Sarocladium oryzae (11-55.5%), and Sclerotinia sclerotiorum (29.7-40.5%); 1000 D diluted methanolic extract of S. amritsarensis V31 showed growth inhibition against R. solani (23.3%), A. flavus (7.7%), F. oxysporum (22.2%), S. oryzae (16.7%), and S. sclerotiorum (19.0%). Metabolite extracts of S. amritsarensis V31 significantly reduced the incidence of rice sheath blight both as preventive and curative sprays. Chemical profiling of the metabolites in DMSO extract of S. amritsarensis V31 revealed 6-amino-5-nitrosopyrimidine-2,4-diol as the predominant compound present. It was evident from the LC-MS analyses that S. amritsarensis V31 produced a mixture of potential antifungal compounds which inhibited the growth of different phytopathogenic fungi. The results of this study indicated that metabolite extracts of S. amritsarensis V31 can be exploited as a bio-fungicide to control phytopathogenic fungi.
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Affiliation(s)
- Mohammad Shahid
- Microbial Technology Unit II, ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Uttar Pradesh, Kushmaur, Mau, 275103, India
| | - Bansh Narayan Singh
- Microbial Technology Unit II, ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Uttar Pradesh, Kushmaur, Mau, 275103, India
| | - Shaloo Verma
- Microbial Technology Unit II, ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Uttar Pradesh, Kushmaur, Mau, 275103, India
| | - Prassan Choudhary
- Microbial Technology Unit II, ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Uttar Pradesh, Kushmaur, Mau, 275103, India
| | - Sudipta Das
- Microbial Technology Unit II, ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Uttar Pradesh, Kushmaur, Mau, 275103, India
| | - Hillol Chakdar
- Microbial Technology Unit II, ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Uttar Pradesh, Kushmaur, Mau, 275103, India.
| | - Kumar Murugan
- Microbial Technology Unit II, ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Uttar Pradesh, Kushmaur, Mau, 275103, India
| | - Sanjay Kumar Goswami
- Microbial Technology Unit II, ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Uttar Pradesh, Kushmaur, Mau, 275103, India
- ICAR-Indian Institute of Sugarcane Research (IISR), Uttar Pradesh, Lucknow, 226002, India
| | - Anil Kumar Saxena
- Microbial Technology Unit II, ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Uttar Pradesh, Kushmaur, Mau, 275103, India
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Djebaili R, Pellegrini M, Ercole C, Farda B, Kitouni M, Del Gallo M. Biocontrol of Soil-Borne Pathogens of Solanum lycopersicum L. and Daucus carota L. by Plant Growth-Promoting Actinomycetes: In Vitro and In Planta Antagonistic Activity. Pathogens 2021; 10:pathogens10101305. [PMID: 34684253 PMCID: PMC8538725 DOI: 10.3390/pathogens10101305] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/07/2021] [Accepted: 10/08/2021] [Indexed: 01/12/2023] Open
Abstract
Biotic stress caused by pathogenic microorganisms leads to damage in crops. Tomato and carrot are among the most important vegetables cultivated worldwide. These plants are attacked by several pathogens, affecting their growth and productivity. Fourteen plant growth-promoting actinomycetes (PGPA) were screened for their in vitro biocontrol activity against Solanum lycopersicum and Daucus carota microbial phytopathogens. Their antifungal activity was evaluated against Fusarium oxysporum f. sp. radicis-lycopersici (FORL) and Rhizoctonia solani (RHS). Antibacterial activity was evaluated against Pseudomonas syringae, Pseudomonas corrugata, Pseudomonas syringae pv. actinidiae, and Pectobacterium carotovorum subsp. carotovorum. Strains that showed good in vitro results were further investigated in vitro (cell-free supernatants activity, scanning electron microscope observations of fungal inhibition). The consortium of the most active PGPA was then utilized as biocontrol agents in planta experiments on S. lycopersicum and D. carota. The Streptomyces albidoflavus H12 and Nocardiopsis aegyptica H14 strains showed the best in vitro biocontrol activities. The diffusible and volatile compounds and cell-free supernatants of these strains showed both antifungal (in vitro inhibition up to 85%, hyphal desegregation and fungicidal properties) and antibacterial activity (in vitro inhibition >25 mm and bactericidal properties). Their consortium was also able to counteract the infection symptoms of microbial phytopathogens during in planta experiments, improving plant status. The results obtained highlight the efficacy of the selected actinomycetes strains as biocontrol agents of S. lycopersicum and D. carota.
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Affiliation(s)
- Rihab Djebaili
- Department of Life, Health and Environmental Sciences, University of L’Aquila, Coppito, 67100 L’Aquila, Italy; (R.D.); (C.E.); (B.F.); (M.D.G.)
- Laboratory of Microbiological Engineering and Applications, University of Brothers Mentouri Constantine 1, Ain El Bey Road, Constantine 25000, Algeria;
| | - Marika Pellegrini
- Department of Life, Health and Environmental Sciences, University of L’Aquila, Coppito, 67100 L’Aquila, Italy; (R.D.); (C.E.); (B.F.); (M.D.G.)
- Correspondence: ; Tel.: +39-0862433246
| | - Claudia Ercole
- Department of Life, Health and Environmental Sciences, University of L’Aquila, Coppito, 67100 L’Aquila, Italy; (R.D.); (C.E.); (B.F.); (M.D.G.)
| | - Beatrice Farda
- Department of Life, Health and Environmental Sciences, University of L’Aquila, Coppito, 67100 L’Aquila, Italy; (R.D.); (C.E.); (B.F.); (M.D.G.)
| | - Mahmoud Kitouni
- Laboratory of Microbiological Engineering and Applications, University of Brothers Mentouri Constantine 1, Ain El Bey Road, Constantine 25000, Algeria;
| | - Maddalena Del Gallo
- Department of Life, Health and Environmental Sciences, University of L’Aquila, Coppito, 67100 L’Aquila, Italy; (R.D.); (C.E.); (B.F.); (M.D.G.)
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Oliveira THBDE, Gusmão NBDE, Silva LAODA, Coelho LCBB. Free Radicals and Actinobacteria as a Misexplored Goldmine of Antioxidant Compounds. AN ACAD BRAS CIENC 2021; 93:e20201925. [PMID: 34586182 DOI: 10.1590/0001-3765202120201925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 03/23/2021] [Indexed: 11/22/2022] Open
Abstract
Free radicals are highly reactive unstable molecules, which can be synthesized in different ways, considered harmful and threatening to humans; these chemical species have free traffic throughout the human body, interacting with biological molecules and human body organ tissues. The interaction between free radicals and biological molecules is the main factor for disease development or pre-existing disease symptoms aggravation. Antioxidants are chemical compounds able to donate electric charge to stabilize molecules such as free radicals. Recent studies have proved the benefits of antioxidants intake in health improvement. In this way, the search for natural sources of antioxidants has become an ascending trend. In this field, the microbial sources are considered poorly explored compared to the numerous amount of other compounds obtained from them, especially from Actinobacteria. The searched literature about Actinobacteria highlights an important capacity of producing natural antioxidants; however, there is a lack of in vivo studies of these isolated compounds. In this review, we gathered information that supports our point of view that Actinobacteria is a truly renewable and superficially explored source of natural antioxidants. Furthermore, our purpose is also to point this limitation and stimulate more researches in this area.
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Affiliation(s)
- Thales Henrique B DE Oliveira
- Universidade Federal de Pernambuco, Departamento de Bioquímica, Centro de Biociências, Avenida Professor Moraes Rego, s/n, Cidade Universitária, 50670-420 Recife, PE, Brazil
| | - Norma B DE Gusmão
- Universidade Federal de Pernambuco, Departamento de Antibióticos, Centro de Biociências, Avenida dos Economistas, s/n, Cidade Universitária, 52171-011 Recife, PE, Brazil
| | - Leonor A O DA Silva
- Universidade Federal da Paraíba, Departamento de Biologia Molecular, Centro de Ciências Exatas e da Natureza, Conjunto Presidente Castelo Branco III, 58033-455 João Pessoa, PB, Brazil
| | - Luana C B B Coelho
- Universidade Federal de Pernambuco, Departamento de Bioquímica, Centro de Biociências, Avenida Professor Moraes Rego, s/n, Cidade Universitária, 50670-420 Recife, PE, Brazil
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Yu TT, Kuppusamy R, Yasir M, Hassan MM, Sara M, Ho J, Willcox MDP, Black DS, Kumar N. Polyphenylglyoxamide-Based Amphiphilic Small Molecular Peptidomimetics as Antibacterial Agents with Anti-Biofilm Activity. Int J Mol Sci 2021; 22:7344. [PMID: 34298964 PMCID: PMC8303886 DOI: 10.3390/ijms22147344] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/01/2021] [Accepted: 07/04/2021] [Indexed: 01/02/2023] Open
Abstract
The rapid emergence of drug-resistant bacteria is a major global health concern. Antimicrobial peptides (AMPs) and peptidomimetics have arisen as a new class of antibacterial agents in recent years in an attempt to overcome antibiotic resistance. A library of phenylglyoxamide-based small molecular peptidomimetics was synthesised by incorporating an N-alkylsulfonyl hydrophobic group with varying alkyl chain lengths and a hydrophilic cationic group into a glyoxamide core appended to phenyl ring systems. The quaternary ammonium iodide salts 16d and 17c showed excellent minimum inhibitory concentration (MIC) of 4 and 8 μM (2.9 and 5.6 μg/mL) against Staphylococcus aureus, respectively, while the guanidinium hydrochloride salt 34a showed an MIC of 16 μM (8.5 μg/mL) against Escherichia coli. Additionally, the quaternary ammonium iodide salt 17c inhibited 70% S. aureus biofilm formation at 16 μM. It also disrupted 44% of pre-established S. aureus biofilms at 32 μM and 28% of pre-established E. coli biofilms 64 μM, respectively. A cytoplasmic membrane permeability study indicated that the synthesised peptidomimetics acted via disruption and depolarisation of membranes. Moreover, the quaternary ammonium iodide salts 16d and 17c were non-toxic against human cells at their therapeutic dosages against S. aureus.
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Affiliation(s)
- Tsz Tin Yu
- School of Chemistry, The University of New South Wales, Sydney, NSW 2052, Australia; (T.T.Y.); (R.K.); (M.M.H.); (J.H.)
| | - Rajesh Kuppusamy
- School of Chemistry, The University of New South Wales, Sydney, NSW 2052, Australia; (T.T.Y.); (R.K.); (M.M.H.); (J.H.)
- School of Optometry and Vision Science, University of New South Wales, Sydney, NSW 2052, Australia; (M.Y.); (M.S.); (M.D.P.W.)
| | - Muhammad Yasir
- School of Optometry and Vision Science, University of New South Wales, Sydney, NSW 2052, Australia; (M.Y.); (M.S.); (M.D.P.W.)
| | - Md. Musfizur Hassan
- School of Chemistry, The University of New South Wales, Sydney, NSW 2052, Australia; (T.T.Y.); (R.K.); (M.M.H.); (J.H.)
| | - Manjulatha Sara
- School of Optometry and Vision Science, University of New South Wales, Sydney, NSW 2052, Australia; (M.Y.); (M.S.); (M.D.P.W.)
| | - Junming Ho
- School of Chemistry, The University of New South Wales, Sydney, NSW 2052, Australia; (T.T.Y.); (R.K.); (M.M.H.); (J.H.)
| | - Mark D. P. Willcox
- School of Optometry and Vision Science, University of New South Wales, Sydney, NSW 2052, Australia; (M.Y.); (M.S.); (M.D.P.W.)
| | - David StC. Black
- School of Chemistry, The University of New South Wales, Sydney, NSW 2052, Australia; (T.T.Y.); (R.K.); (M.M.H.); (J.H.)
| | - Naresh Kumar
- School of Chemistry, The University of New South Wales, Sydney, NSW 2052, Australia; (T.T.Y.); (R.K.); (M.M.H.); (J.H.)
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20
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Peng GY, Kurtán T, Mándi A, He J, Cao ZY, Tang H, Mao SC, Zhang W. Neuronal Modulators from the Coral-Associated Fungi Aspergillus candidus. Mar Drugs 2021; 19:md19050281. [PMID: 34069724 PMCID: PMC8161303 DOI: 10.3390/md19050281] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 05/12/2021] [Accepted: 05/13/2021] [Indexed: 11/16/2022] Open
Abstract
Three new p-terphenyl derivatives, named 4″-O-methyl-prenylterphenyllin B (1) and phenylcandilide A and B (17 and 18), and three new indole-diterpene alkaloids, asperindoles E-G (22-24), were isolated together with eighteen known analogues from the fungi Aspergillus candidus associated with the South China Sea gorgonian Junceela fragillis. The structures and absolute configurations of the new compounds were elucidated on the basis of spectroscopic analysis, and DFT/NMR and TDDFT/ECD calculations. In a primary cultured cortical neuronal network, the compounds 6, 9, 14, 17, 18 and 24 modulated spontaneous Ca2+ oscillations and 4-aminopyridine hyperexcited neuronal activity. A preliminary structure-activity relationship was discussed.
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Affiliation(s)
- Gao-Yang Peng
- School of Pharmacy, Nanchang University, 461 Bayi Road, Nanchang 330006, China;
- School of Medicine, Tongji University, 1239 Si-Ping Road, Shanghai 200092, China
- School of Pharmacy, Navy Medical University, 325 Guo-He Rd., Shanghai 200433, China
| | - Tibor Kurtán
- Department of Organic Chemistry, University of Debrecen, POB 400, H-4002 Debrecen, Hungary; (T.K.); (A.M.)
| | - Attila Mándi
- Department of Organic Chemistry, University of Debrecen, POB 400, H-4002 Debrecen, Hungary; (T.K.); (A.M.)
| | - Jing He
- State Key Laboratory of Natural Medicines, Department of TCM Pharmacology, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 639 Long-Mian Ave., Nanjing 211198, China; (J.H.); (Z.-Y.C.)
| | - Zheng-Yu Cao
- State Key Laboratory of Natural Medicines, Department of TCM Pharmacology, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 639 Long-Mian Ave., Nanjing 211198, China; (J.H.); (Z.-Y.C.)
| | - Hua Tang
- Institute of Translational Medicine, Shanghai University, 99 Shang-Da Road, Shanghai 200444, China;
| | - Shui-Chun Mao
- School of Pharmacy, Nanchang University, 461 Bayi Road, Nanchang 330006, China;
- Correspondence: (S.-C.M.); (W.Z.)
| | - Wen Zhang
- School of Medicine, Tongji University, 1239 Si-Ping Road, Shanghai 200092, China
- School of Pharmacy, Navy Medical University, 325 Guo-He Rd., Shanghai 200433, China
- Correspondence: (S.-C.M.); (W.Z.)
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21
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Chang Y, Che Q, Xing L, Ma C, Han Y, Zhu T, Pfeifer BA, Peng J, Zhang G, Li D. Antibacterial p-Terphenyl with a Rare 2,2'-Bithiazole Substructure and Related Compounds Isolated from the Marine-Derived Actinomycete Nocardiopsis sp. HDN154086. JOURNAL OF NATURAL PRODUCTS 2021; 84:1226-1231. [PMID: 33600172 DOI: 10.1021/acs.jnatprod.0c01296] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Assisted by MS/MS-based molecular networking and X-ray diffraction analysis, five new p-terphenyl derivatives, namely, nocarterphenyls D-H (1-5), were obtained and characterized from the cultures of the marine sediment-derived actinomycete Nocardiopsis sp. HDN154086. The skeleton of nocarterphenyl D (1) was defined to possess a rare 2,2'-bithiazole scaffold, naturally occurring for the first time, and nocarterphenyls E-H (2-5) are p-terphenylquinones with unusual thioether linked fatty acid methyl ester substitutions. Compound 1 showed promising activity against multiple bacteria with MIC values ranging from 1.5 to 6.2 μM, and 2 exhibited notable antibacterial activity against MRSA which surpassed the positive control ciprofloxacin.
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Affiliation(s)
- Yimin Chang
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Qian Che
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Li Xing
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Chuanteng Ma
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Yaxin Han
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Tianjiao Zhu
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Blaine A Pfeifer
- Department of Chemical and Biological Engineering, The State University of New York at Buffalo, Buffalo, New York 14260, United States
| | - Jixing Peng
- Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
| | - Guojian Zhang
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, People's Republic of China
| | - Dehai Li
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, People's Republic of China
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22
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Adeel M, Khalid M, Ullah MA, Muhammad S, Khan MU, Tahir MN, Khan I, Asghar M, Mughal KS. Exploration of CH⋯F & CF⋯H mediated supramolecular arrangements into fluorinated terphenyls and theoretical prediction of their third-order nonlinear optical response. RSC Adv 2021; 11:7766-7778. [PMID: 35423290 PMCID: PMC8695103 DOI: 10.1039/d0ra08528f] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 01/25/2021] [Indexed: 01/17/2023] Open
Abstract
In the present study, three novel fluorinated terphenyl compounds i.e., 2′,4,4′′,5′-tetrafluoro-1,1':4′,1′′-terphenyl (1), 2′,5′-difluoro-1,1':4′,1′′-terphenyl (2) and 2′,5′-difluro-4,4′′-diphenoxy-1,1:4′,1′′-terphenyl (3) have been synthesized by Suzuki Miyaura method. Single crystal XRD study reveals ð-ð stacking stabilization in molecular packing along with F⋯H and F⋯C interactions. This computational quantum chemical exploration was also done by using density functional theory (DFT) methods. The comparison of experimental (SC-XRD) and theoretical (DFT) investigations on structural parameters have been reported which shows reasonable agreements. Hirshfeld surface analysis explores the strength of intermolecular interactions present in the synthesized compounds. A substantial computational analysis of synthesized compounds is done for their optoelectronic and third-order nonlinear optical properties. The third-order NLO study was performed at M06/6-311G* level of theory. A comparative analysis of third-order polarizability of studied compounds is done with that of para-nitroaniline (p-NA) molecule which is often considered as a prototype NLO molecule. The third-order NLO analysis results suggest that all investigated compounds 1, 2 and 3 have significant potential as efficient third-order NLO molecules as compared to p-NA. The studied compounds 1, 2 and 3 possess about 13.7 times, 5.2 times and 5.17 times larger third-order polarizability amplitudes than that of p-NA (25.45 × 10−36 esu) as calculated at same M06/6-311G* levels of theory. Time-dependent density functional theory (TD-DFT) calculations are performed for electronic excitation energies and their oscillator strengths. The studies of frontier molecular orbitals (FMO) analysis, total and partial density of states (DOS) were performed to investigate the intramolecular charge transfer (ICT) process in the entitled compounds. Three novel fluorinated terphenyls were synthesized by a Suzuki Miyaura method. DFT and TDDFT were performed to explore FMO, DOS analysis and third-order NLO properties. This may provide new ways to utilise fluorinated terphenyl compounds as advanced functional materials.![]()
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Affiliation(s)
- Muhammad Adeel
- Institute of Chemical Sciences, Gomal University Dera Ismail Khan Khyber Pukhtunkhwa Pakistan
| | - Muhammad Khalid
- Department of Chemistry, Khwaja Fareed University of Engineering & Information Technology Rahim Yar Khan-64200 Pakistan
| | - Malik Aman Ullah
- Institute of Chemical Sciences, Gomal University Dera Ismail Khan Khyber Pukhtunkhwa Pakistan
| | - Shabbir Muhammad
- Department of Physics, College of Science, King Khalid University P.O. Box 9004 Abha 61413 Saudi Arabia.,Research Center for Advanced Material Science (RCAMS), King Khalid University P.O. Box 9004 Abha 61413 Saudi Arabia
| | - Muhammad Usman Khan
- Department of Chemistry, University of Okara Okara-56300 Pakistan.,Department of Applied Chemistry, Government College University Faisalabad-38000 Pakistan
| | | | - Ilham Khan
- Institute of Chemical Sciences, Gomal University Dera Ismail Khan Khyber Pukhtunkhwa Pakistan
| | - Muhammad Asghar
- Department of Physics, Khwaja Fareed University of Engineering & Information Technology Rahim Yar Khan-64200 Pakistan
| | - Khawar Shahzad Mughal
- Department of Chemistry, Khwaja Fareed University of Engineering & Information Technology Rahim Yar Khan-64200 Pakistan
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23
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Shivaiah KK, Upton B, Nikolau BJ. Kinetic, Structural, and Mutational Analysis of Acyl-CoA Carboxylase From Thermobifida fusca YX. Front Mol Biosci 2021; 7:615614. [PMID: 33511159 PMCID: PMC7835884 DOI: 10.3389/fmolb.2020.615614] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 12/07/2020] [Indexed: 11/13/2022] Open
Abstract
Acyl-CoA carboxylases (AcCCase) are biotin-dependent enzymes that are capable of carboxylating more than one short chain acyl-CoA substrate. We have conducted structural and kinetic analyses of such an AcCCase from Thermobifida fusca YX, which exhibits promiscuity in carboxylating acetyl-CoA, propionyl-CoA, and butyryl-CoA. The enzyme consists of two catalytic subunits (TfAcCCA and TfAcCCB) and a non-catalytic subunit, TfAcCCE, and is organized in quaternary structure with a A6B6E6 stoichiometry. Moreover, this holoenzyme structure appears to be primarily assembled from two A3 and a B6E6 subcomplexes. The role of the TfAcCCE subunit is to facilitate the assembly of the holoenzyme complex, and thereby activate catalysis. Based on prior studies of an AcCCase from Streptomyces coelicolor, we explored whether a conserved Asp residue in the TfAcCCB subunit may have a role in determining the substrate selectivity of these types of enzymes. Mutating this D427 residue resulted in alterations in the substrate specificity of the TfAcCCase, increasing proficiency for carboxylating acetyl-CoA, while decreasing carboxylation proficiency with propionyl-CoA and butyryl-CoA. Collectively these results suggest that residue D427 of AcCCB subunits is an important, but not sole determinant of the substrate specificity of AcCCase enzymes.
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Affiliation(s)
- Kiran-Kumar Shivaiah
- Roy J. Carver Department of Biochemistry, Biophysics, and Molecular Biology, Iowa State University, Ames, IA, United States.,Center for Biorenewable Chemicals (CBiRC), Iowa State University, Ames, IA, United States.,Center for Metabolic Biology, Iowa State University, Ames, IA, United States
| | - Bryon Upton
- Roy J. Carver Department of Biochemistry, Biophysics, and Molecular Biology, Iowa State University, Ames, IA, United States.,Center for Biorenewable Chemicals (CBiRC), Iowa State University, Ames, IA, United States.,Center for Metabolic Biology, Iowa State University, Ames, IA, United States
| | - Basil J Nikolau
- Roy J. Carver Department of Biochemistry, Biophysics, and Molecular Biology, Iowa State University, Ames, IA, United States.,Center for Biorenewable Chemicals (CBiRC), Iowa State University, Ames, IA, United States.,Center for Metabolic Biology, Iowa State University, Ames, IA, United States
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24
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Messaoudi O, Wink J, Bendahou M. Diversity of Actinobacteria Isolated from Date Palms Rhizosphere and Saline Environments: Isolation, Identification and Biological Activity Evaluation. Microorganisms 2020; 8:E1853. [PMID: 33255541 PMCID: PMC7760371 DOI: 10.3390/microorganisms8121853] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 10/30/2020] [Accepted: 11/02/2020] [Indexed: 01/20/2023] Open
Abstract
The diversity of cultural Actinobacteria in two types of Algerian Sahara environments, including saline environments and date palms rhizosphere, was investigated. In this study, a total of 40 strains of actinomycetes was isolated from different soil samples, using a rehydration and centrifugation method. Molecular identification, based on 16S rRNA gene sequence analysis, revealed that these isolates were affiliated to six clusters corresponding to eight genera, including Streptomyces, Nocardiopsis, Saccharopolyspora, Actinomadura, Actinocorallia, Micromonospora, Couchioplanes, and Planomonospora. A taxonomic analysis, based on the morphological, physiological, biochemical, and molecular investigation, of selected strains, which belong to the rare Actinobacteria, was undertaken. Four strains (CG3, A111, A93, and A79) were found to form distinct phyletic lines and represent new actinobacterial taxa. An assessment of antimicrobial proprieties of the 40 obtained actinomycetes strains, showed moderate to strong antimicrobial activities against fungi and bacteria. This study demonstrated the richness of Algerian Sahara with rare Actinobacteria, which can provide novel bioactive metabolites, to solving some of the most challenging problems of the day, such as multi-drug resistance.
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Affiliation(s)
- Omar Messaoudi
- Laboratory of Applied Microbiology in Food, Biomedical and Environment, Abou Bekr Belkaïd University, 13000 Tlemcen, Algeria;
- Department of Biology, Faculty of Science, University of Amar Telidji, 03000 Laghouat, Algeria
- Microbial Strain Collection, Helmholtz Centre for Infection Research GmbH (HZI), Inhoffenstrasse 7, 38124 Braunschweig, Germany;
| | - Joachim Wink
- Microbial Strain Collection, Helmholtz Centre for Infection Research GmbH (HZI), Inhoffenstrasse 7, 38124 Braunschweig, Germany;
| | - Mourad Bendahou
- Laboratory of Applied Microbiology in Food, Biomedical and Environment, Abou Bekr Belkaïd University, 13000 Tlemcen, Algeria;
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25
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Wilson ZE, Brimble MA. Molecules derived from the extremes of life: a decade later. Nat Prod Rep 2020; 38:24-82. [PMID: 32672280 DOI: 10.1039/d0np00021c] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Covering: Early 2008 until the end of 2019Microorganisms which survive (extreme-tolerant) or even prefer (extremophilic) living at the limits of pH, temperature, salinity and pressure found on earth have proven to be a rich source of novel structures. In this update we summarise the wide variety of new molecules which have been isolated from extremophilic and extreme-tolerant microorganisms since our original 2009 review, highlighting the range of bioactivities these molecules have been reported to possess.
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Affiliation(s)
- Zoe E Wilson
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand.
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26
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Rehman SU, Wu JS, Yang LJ, Ting S, Shao CL, Wang CY. One New Terphenyl Glycoside From a Sponge-Derived Fungus Trichoderma reesei (HN-2016-018). Nat Prod Commun 2020. [DOI: 10.1177/1934578x20907753] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
One new terphenyl glycoside (1), gliocladinin D, together with 4 known compounds (2-5) were isolated from the sponge-derived fungus Trichoderma reesei (HN-2016-018). The structure of the new compound was elucidated by the comprehensive spectroscopic analysis, including 1-dimensional and 2-dimensional nuclear magnetic resonance, and high-resolution electrospray ionization mass spectrometry. Compound 3 exhibited moderate Topo I inhibitory activity.
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Affiliation(s)
- Saif Ur Rehman
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy; Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao 266003, Qingdao, People′s Republic of China
- Department of Pharmacy, Faculty of Medical & Health Sciences, University of the Poonch, Rawalakot, Pakistan
| | - Jing-Shuai Wu
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy; Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao 266003, Qingdao, People′s Republic of China
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, People′s Republic of China
| | - Lu-Jia Yang
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy; Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao 266003, Qingdao, People′s Republic of China
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, People′s Republic of China
| | - Shi Ting
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy; Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao 266003, Qingdao, People′s Republic of China
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, People′s Republic of China
| | - Chang-Lun Shao
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy; Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao 266003, Qingdao, People′s Republic of China
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, People′s Republic of China
| | - Chang-Yun Wang
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy; Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao 266003, Qingdao, People′s Republic of China
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, People′s Republic of China
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27
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Protein tyrosine phosphatase 1B (PTP1B) inhibitors from the deep-sea fungus Penicillium chrysogenum SCSIO 07007. Bioorg Chem 2020; 96:103646. [DOI: 10.1016/j.bioorg.2020.103646] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 01/29/2020] [Accepted: 01/30/2020] [Indexed: 12/31/2022]
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28
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Siddharth S, Vittal RR, Wink J, Steinert M. Diversity and Bioactive Potential of Actinobacteria from Unexplored Regions of Western Ghats, India. Microorganisms 2020; 8:microorganisms8020225. [PMID: 32046111 PMCID: PMC7074718 DOI: 10.3390/microorganisms8020225] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 02/05/2020] [Accepted: 02/06/2020] [Indexed: 12/19/2022] Open
Abstract
The search for novel bioactive metabolites continues to be of much importance around the world for pharmaceutical, agricultural, and industrial applications. Actinobacteria constitute one of the extremely interesting groups of microorganisms widely used as important biological contributors for a wide range of novel secondary metabolites. This study focused on the assessment of antimicrobial and antioxidant activity of crude extracts of actinobacterial strains. Western Ghats of India represents unique regions of biologically diverse areas called “hot spots”. A total of 32 isolates were obtained from soil samples of different forest locations of Bisle Ghat and Virjapet situated in Western Ghats of Karnataka, India. The isolates were identified as species of Streptomyces, Nocardiopsis, and Nocardioides by cultural, morphological, and molecular studies. Based on preliminary screening, seven isolates were chosen for metabolites extraction and to determine antimicrobial activity qualitatively (disc diffusion method) and quantitatively (micro dilution method) and scavenging activity against DPPH (2,2-diphenyl-1-picrylhydrazyl) and ABTS (2,2′-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) radicals. Crude extracts of all seven isolates exhibited fairly strong antibacterial activity towards MRSA strains (MRSA ATCC 33591, MRSA ATCC NR-46071, and MRSA ATCC 46171) with MIC varying from 15.62 to 125 μg/mL, whereas showed less inhibition potential towards Gram-negative bacteria Salmonella typhi (ATCC 25241) and Escherichia coli (ATCC 11775) with MIC of 125–500 μg/mL. The isolates namely S1A, SS5, SCA35, and SCA 11 inhibited Fusarium moniliforme (MTCC 6576) to a maximum extent with MIC ranging from 62.5 to 250 μg/mL. Crude extract of SCA 11 and SCA 13 exhibited potent scavenging activities against DPPH and ABTS radicals. The results from this study suggest that actinobacterial strains of Western Ghats are an excellent source of natural antimicrobial and antioxidant compounds. Further research investigations on purification, recovery, and structural characterization of the active compounds are to be carried out.
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Affiliation(s)
- Saket Siddharth
- Department of Studies in Microbiology, University of Mysore, Manasagangotri, Mysore 570 006, India;
| | - Ravishankar Rai Vittal
- Department of Studies in Microbiology, University of Mysore, Manasagangotri, Mysore 570 006, India;
- Correspondence:
| | - Joachim Wink
- Microbial Strain Collection, Helmholtz Centre for Infection Research GmbH (HZI), Inhoffenstrasse 7, 38124 Braunschweig, Germany;
| | - Michael Steinert
- Institute of Microbiology, Technische Universität Braunschweig, 38106 Braunschweig, Germany;
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29
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Georgousaki K, Tsafantakis N, Gumeni S, Lambrinidis G, González-Menéndez V, Tormo JR, Genilloud O, Trougakos IP, Fokialakis N. Biological Evaluation and In Silico Study of Benzoic Acid Derivatives from Bjerkandera adusta Targeting Proteostasis Network Modules. Molecules 2020; 25:molecules25030666. [PMID: 32033190 PMCID: PMC7036779 DOI: 10.3390/molecules25030666] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 01/24/2020] [Accepted: 01/29/2020] [Indexed: 01/17/2023] Open
Abstract
A main cellular functional module that becomes dysfunctional during aging is the proteostasis network. In the present study, we show that benzoic acid derivatives isolated from Bjerkandera adusta promote the activity of the two main protein degradation systems, namely the ubiquitin-proteasome (UPP) and especially the autophagy-lysosome pathway (ALP) in human foreskin fibroblasts. Our findings were further supported by in silico studies, where all compounds were found to be putative binders of both cathepsins B and L. Among them, compound 3 (3-chloro-4-methoxybenzoic acid) showed the most potent interaction with both enzymes, which justifies the strong activation of cathepsins B and L (467.3 ± 3.9%) on cell-based assays. Considering that the activity of both the UPP and ALP pathways decreases with aging, our results suggest that the hydroxybenzoic acid scaffold could be considered as a promising candidate for the development of novel modulators of the proteostasis network, and likely of anti-aging agents.
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Affiliation(s)
- Katerina Georgousaki
- Division of Pharmacognosy and Natural Products Chemistry, Department of Pharmacy, National and Kapodistrian University of Athens, 157 71 Athens, Greece; (K.G.); (N.T.)
| | - Nikolaos Tsafantakis
- Division of Pharmacognosy and Natural Products Chemistry, Department of Pharmacy, National and Kapodistrian University of Athens, 157 71 Athens, Greece; (K.G.); (N.T.)
| | - Sentiljana Gumeni
- Department of Cell Biology and Biophysics, Faculty of Biology, National and Kapodistrian University of Athens, 157 72 Athens, Greece; (S.G.); (I.P.T.)
| | - George Lambrinidis
- Division of Pharmaceutical Chemistry, Department of Pharmacy, National and Kapodistrian University of Athens, 157 84 Athens, Greece;
| | - Victor González-Menéndez
- Fundacion MEDINA, Health Sciences Technology Park, 18016 Granada, Spain; (V.G.-M.); (J.R.T.); (O.G.)
| | - Jose R. Tormo
- Fundacion MEDINA, Health Sciences Technology Park, 18016 Granada, Spain; (V.G.-M.); (J.R.T.); (O.G.)
| | - Olga Genilloud
- Fundacion MEDINA, Health Sciences Technology Park, 18016 Granada, Spain; (V.G.-M.); (J.R.T.); (O.G.)
| | - Ioannis P. Trougakos
- Department of Cell Biology and Biophysics, Faculty of Biology, National and Kapodistrian University of Athens, 157 72 Athens, Greece; (S.G.); (I.P.T.)
| | - Nikolas Fokialakis
- Division of Pharmacognosy and Natural Products Chemistry, Department of Pharmacy, National and Kapodistrian University of Athens, 157 71 Athens, Greece; (K.G.); (N.T.)
- Correspondence: ; Tel.:+30-210-727-4727
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30
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Corral P, Amoozegar MA, Ventosa A. Halophiles and Their Biomolecules: Recent Advances and Future Applications in Biomedicine. Mar Drugs 2019; 18:md18010033. [PMID: 31906001 PMCID: PMC7024382 DOI: 10.3390/md18010033] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 12/21/2019] [Accepted: 12/28/2019] [Indexed: 12/18/2022] Open
Abstract
The organisms thriving under extreme conditions better than any other organism living on Earth, fascinate by their hostile growing parameters, physiological features, and their production of valuable bioactive metabolites. This is the case of microorganisms (bacteria, archaea, and fungi) that grow optimally at high salinities and are able to produce biomolecules of pharmaceutical interest for therapeutic applications. As along as the microbiota is being approached by massive sequencing, novel insights are revealing the environmental conditions on which the compounds are produced in the microbial community without more stress than sharing the same substratum with their peers, the salt. In this review are reported the molecules described and produced by halophilic microorganisms with a spectrum of action in vitro: antimicrobial and anticancer. The action mechanisms of these molecules, the urgent need to introduce alternative lead compounds and the current aspects on the exploitation and its limitations are discussed.
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Affiliation(s)
- Paulina Corral
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy;
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Sevilla, 41012 Sevilla, Spain
| | - Mohammad A. Amoozegar
- Department of Microbiology, School of Biology, College of Science, University of Tehran, Tehran 14155-6955, Iran;
| | - Antonio Ventosa
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Sevilla, 41012 Sevilla, Spain
- Correspondence: ; Tel.: +34-954556765
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31
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Wang D, Wang Y, Ouyang Y, Fu P, Zhu W. Cytotoxic p-Terphenyls from a Marine-Derived Nocardiopsis Species. JOURNAL OF NATURAL PRODUCTS 2019; 82:3504-3508. [PMID: 31820976 DOI: 10.1021/acs.jnatprod.9b00963] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Three new p-terphenyl derivatives, nocarterphenyls A-C (1-3), along with three known analogues (4-6) were isolated from the marine-derived actinobacterial strain Nocardiopsis sp. OUCMDZ-4936. Their structures were elucidated on the basis of spectroscopic analysis and a single-crystal X-ray diffraction experiment. Compounds 1 and 2 possess a benzothiazole and benzothiazine moiety, respectively, which are rare in the skeleton of p-terphenyls. Nocarterphenyl A (1) showed potent cytotoxic activity against the HL60 and HCC1954 cancer cell lines with the IC50 values of 0.38 and 0.10 μM among 26 human cancer cell lines.
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Affiliation(s)
- Dongyang Wang
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy , Ocean University of China , Qingdao 266003 , China
| | - Yi Wang
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy , Ocean University of China , Qingdao 266003 , China
| | - Yinfeng Ouyang
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy , Ocean University of China , Qingdao 266003 , China
| | - Peng Fu
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy , Ocean University of China , Qingdao 266003 , China
- Open Studio for Druggability Research of Marine Natural Products, Laboratory for Marine Drugs and Bioproducts , Pilot National Laboratory for Marine Science and Technology (Qingdao) , Qingdao 266003 , China
| | - Weiming Zhu
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy , Ocean University of China , Qingdao 266003 , China
- Open Studio for Druggability Research of Marine Natural Products, Laboratory for Marine Drugs and Bioproducts , Pilot National Laboratory for Marine Science and Technology (Qingdao) , Qingdao 266003 , China
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32
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Bovio E, Fauchon M, Toueix Y, Mehiri M, Varese GC, Hellio C. The Sponge-Associated Fungus Eurotium chevalieri MUT 2316 and its Bioactive Molecules: Potential Applications in the Field of Antifouling. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2019; 21:743-752. [PMID: 31494811 DOI: 10.1007/s10126-019-09920-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 08/20/2019] [Indexed: 06/10/2023]
Abstract
The need for new environmentally friendly antifouling and the observation that many marine organisms have developed strategies to keep their surface free of epibionts has stimulated the search for marine natural compounds with antifouling activities. Sponges and in particular fungi associated with them represent one of the most appropriate sources of defence molecules and could represent a promising biomass for the supply of new antifouling compounds. The objective of this work was therefore to evaluate the antifouling potency of 7 compounds isolated from the sponge derived fungus Eurotium chevalieri MUT 2316. The assessment of their activity targeted the inhibition of the adhesion and/or growth of selected marine bacteria (5) and microalgae (5), as well as the inhibition of the mussel's byssus thread formation (tyrosinase activity). The 7 compounds showed bioactivity, with various levels of selectivity for species. Cyclo-L-Trp-L-Ala was the most promising active compound, and led to the inhibition, at very low concentrations (0.001 μg ml-1 in 61.5% of cases), of adhesion and growth of all the microalgae, of selected bacteria, and towards the inhibition of tyrosinase. Promising results were also obtained for echinulin, neoechinulin A, dihydroauroglaucin and flavoglaucin, respectively, leading to inhibition of adhesion and/or growth of 9, 7, 8 and 8 microfouling species at various concentrations.
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Affiliation(s)
- Elena Bovio
- Mycotheca Universitatis Taurinensis, Department of Life Sciences and Systems Biology, University of Turin, Viale Mattioli 25, 10125, Turin, Italy
- CNRS, Nice Institute of Chemistry, UMR 7272, Marine Natural Products Team, University Nice Côte d'Azur, 60103, Nice, France
| | - Marilyne Fauchon
- University Brest, CNRS, IRD, Ifremer, LEMAR, Institut Universitaire Européen de la Mer, F-29280, Plouzané, France
| | - Yannick Toueix
- University Brest, CNRS, IRD, Ifremer, LEMAR, Institut Universitaire Européen de la Mer, F-29280, Plouzané, France
| | - Mohamed Mehiri
- CNRS, Nice Institute of Chemistry, UMR 7272, Marine Natural Products Team, University Nice Côte d'Azur, 60103, Nice, France
| | - Giovanna Cristina Varese
- Mycotheca Universitatis Taurinensis, Department of Life Sciences and Systems Biology, University of Turin, Viale Mattioli 25, 10125, Turin, Italy.
| | - Claire Hellio
- University Brest, CNRS, IRD, Ifremer, LEMAR, Institut Universitaire Européen de la Mer, F-29280, Plouzané, France.
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Chen X, Hu LF, Huang XS, Zhao LX, Miao CP, Chen YW, Xu LH, Han L, Li YQ. Isolation and Characterization of New Phenazine Metabolites with Antifungal Activity against Root-Rot Pathogens of Panax notoginseng from Streptomyces. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:11403-11407. [PMID: 31509401 DOI: 10.1021/acs.jafc.9b04191] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Three new phenazine metabolites, strepphenazine A-C (1-3), along with a known compound baraphenazine E 4 were isolated from the culture broth of a Streptomyces strain YIM PH20095. The structures were elucidated based on the spectral data. Compounds 1-4 showed different antifungal activity against Fusarium oxysporum, Plectosphaerella cucumerina, Alternaria panax, and Phoma herbarum, which caused root-rot disease of Panax notoginseng with minimal inhibitory concentrations (MICs) of 16-64 μg/mL; compared with compound 4, compounds 1-3 showed better antifungal activity against some of these pathogenic fungi with MICs of 16-32 μg/mL, while compound 4 showed antifungal activity against F. oxysporum, P. cucumerina, and A. panax with the same MICs of 64 μg/mL. Thus, strain YIM PH20095 provides new sources for the development of biological control agents to prevent the infection of pathogenic fungi of P. notoginseng.
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Affiliation(s)
- Xiao Chen
- Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education, College of Life Science , Yunnan University , Kunming 650091 , China
| | - Lin-Fang Hu
- Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education, College of Life Science , Yunnan University , Kunming 650091 , China
| | - Xue-Shi Huang
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences , Northeastern University , Shenyang 110819 , China
| | - Li-Xing Zhao
- Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education, College of Life Science , Yunnan University , Kunming 650091 , China
| | - Cui-Ping Miao
- Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education, College of Life Science , Yunnan University , Kunming 650091 , China
| | - You-Wei Chen
- Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education, College of Life Science , Yunnan University , Kunming 650091 , China
| | - Li-Hua Xu
- Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education, College of Life Science , Yunnan University , Kunming 650091 , China
| | - Li Han
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences , Northeastern University , Shenyang 110819 , China
| | - Yi-Qing Li
- Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education, College of Life Science , Yunnan University , Kunming 650091 , China
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Siddharth S, Rai V R. Isolation and characterization of bioactive compounds with antibacterial, antioxidant and enzyme inhibitory activities from marine-derived rare actinobacteria, Nocardiopsis sp. SCA21. Microb Pathog 2019; 137:103775. [PMID: 31600541 DOI: 10.1016/j.micpath.2019.103775] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 08/09/2019] [Accepted: 10/04/2019] [Indexed: 01/20/2023]
Abstract
A rare actinobacteria strain designated SCA21, producing bioactive metabolites was isolated from marine sediment of Havelock Island, Andaman and Nicobar Islands, India. Analysis of 16S rRNA sequences suggested that the strain SCA21 belonged to the genus Nocardiopsis. Chemical investigation of the fermentation broth led to the isolation of two pure bioactive compounds (1-2). Compound 1: 4-bromophenol, a bromophenol derivative; Compound 2: Bis (2-ethylhexyl) phthalate, a phthalate ester. The structure of compound 1 and 2 were elucidated by the detailed analysis of FT-IR, HR-ESI-MS, 1D and 2D NMR, along with literature data analysis. The isolated metabolites were evaluated for enzyme inhibition activity against α-glucosidase and α-amylase, free radical scavenging activity against DPPH and ABTS radicals, metal chelating and antibacterial activity against clinical pathogens. 1 and 2 exhibited remarkable enzyme inhibitory activities against α-glucosidase. However, Compound 2 was found less active against α-amylase. They showed significant free radical scavenging activity against DPPH and ABTS radicals. In addition, except the strain Salmonella typhi ATCC 25241 and Listeria cytogens ATCC 13932, 1 and 2 showed broad spectrum inhibitory activity against MRSA ATCC NR-46171, MRSA ATCC-46071, Klebsiella pneumonia ATCC 13883, Bacillus subtilis ATCC 6633, Staphylococcus aureus ATCC 12600. In conclusion, to best of our knowledge these findings are the first report of isolation of 4-bromophenol and Bis (2-ethylhexyl) phthalate from genus Nocardiopsis, thus suggesting that rare actinomycetes are promising source of therapeutically important bioactive metabolites.
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Affiliation(s)
- Saket Siddharth
- Department of Studies in Microbiology, University of Mysore, Manasagangotri, Mysore, 570006, India.
| | - Ravishankar Rai V
- Department of Studies in Microbiology, University of Mysore, Manasagangotri, Mysore, 570006, India.
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Talarophenol sulfate and talarophilones from the Australian mud dauber wasp-associated fungus, Talaromyces sp. CMB-W045. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.151157] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Messaoudi O, Sudarman E, Bendahou M, Jansen R, Stadler M, Wink J. Kenalactams A-E, Polyene Macrolactams Isolated from Nocardiopsis CG3. JOURNAL OF NATURAL PRODUCTS 2019; 82:1081-1088. [PMID: 31021629 DOI: 10.1021/acs.jnatprod.8b00708] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In our screening program for new biologically active secondary metabolites, a new strain, Nocardiopsis CG3 (DSM 106572), isolated from the saltpan of Kenadsa, was found to produce five new polyene macrolactams, the kenalactams A-E (1-5). Their structures were elucidated by spectral methods (NMR and HRESIMS), and the absolute configuration was derived by chemical derivatization (Mosher's method). Through a feeding experiment, alanine was proven to be the nitrogen-bearing starter unit involved in biosynthesis of the polyketide kenalactam A (1). Kenalactam E (5) was cytotoxic against human prostate cancer PC-3 cells with an IC50 value of 2.1 μM.
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Affiliation(s)
- Omar Messaoudi
- Microbial Strain Collection , Helmholtz Centre for Infection Research GmbH (HZI) , Inhoffenstrasse 7 , 38124 Braunschweig , Germany
- Laboratory of Applied Microbiology in Food and Environment , Abou bekr Belkaïd University , Tlemcen , Algeria
- Department of Biology, Faculty of Science , University of Amar Telidji , Laghouat , Algeria
| | - Enge Sudarman
- Department Microbial Drugs , Helmholtz Centre for Infection Research GmbH (HZI) , Inhoffenstrasse 7 , 38124 Braunschweig , Germany
- German Centre for Infection Research Association (DZIF) , Partner site Hannover-Braunschweig, Inhoffenstrasse 7 , 38124 Braunschweig , Germany
| | - Mourad Bendahou
- Laboratory of Applied Microbiology in Food and Environment , Abou bekr Belkaïd University , Tlemcen , Algeria
| | - Rolf Jansen
- Department Microbial Drugs , Helmholtz Centre for Infection Research GmbH (HZI) , Inhoffenstrasse 7 , 38124 Braunschweig , Germany
- German Centre for Infection Research Association (DZIF) , Partner site Hannover-Braunschweig, Inhoffenstrasse 7 , 38124 Braunschweig , Germany
| | - Marc Stadler
- Department Microbial Drugs , Helmholtz Centre for Infection Research GmbH (HZI) , Inhoffenstrasse 7 , 38124 Braunschweig , Germany
- German Centre for Infection Research Association (DZIF) , Partner site Hannover-Braunschweig, Inhoffenstrasse 7 , 38124 Braunschweig , Germany
| | - Joachim Wink
- Microbial Strain Collection , Helmholtz Centre for Infection Research GmbH (HZI) , Inhoffenstrasse 7 , 38124 Braunschweig , Germany
- German Centre for Infection Research Association (DZIF) , Partner site Hannover-Braunschweig, Inhoffenstrasse 7 , 38124 Braunschweig , Germany
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Bovio E, Garzoli L, Poli A, Luganini A, Villa P, Musumeci R, McCormack GP, Cocuzza CE, Gribaudo G, Mehiri M, Varese GC. Marine Fungi from the Sponge Grantia compressa: Biodiversity, Chemodiversity, and Biotechnological Potential. Mar Drugs 2019; 17:E220. [PMID: 30978942 PMCID: PMC6520677 DOI: 10.3390/md17040220] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 04/01/2019] [Accepted: 04/08/2019] [Indexed: 11/21/2022] Open
Abstract
The emergence of antibiotic resistance and viruses with high epidemic potential made unexplored marine environments an appealing target source for new metabolites. Marine fungi represent one of the most suitable sources for the discovery of new compounds. Thus, the aim of this work was (i) to isolate and identify fungi associated with the Atlantic sponge Grantia compressa; (ii) to study the fungal metabolites by applying the OSMAC approach (one strain; many compounds); (iii) to test fungal compounds for their antimicrobial activities. Twenty-one fungal strains (17 taxa) were isolated from G. compressa. The OSMAC approach revealed an astonishing metabolic diversity in the marine fungus Eurotium chevalieri MUT 2316, from which 10 compounds were extracted, isolated, and characterized. All metabolites were tested against viruses and bacteria (reference and multidrug-resistant strains). Dihydroauroglaucin completely inhibited the replication of influenza A virus; as for herpes simplex virus 1, total inhibition of replication was observed for both physcion and neoechinulin D. Six out of 10 compounds were active against Gram-positive bacteria with isodihydroauroglaucin being the most promising compound (minimal inhibitory concentration (MIC) 4-64 µg/mL) with bactericidal activity. Overall, G. compressa proved to be an outstanding source of fungal diversity. Marine fungi were capable of producing different metabolites; in particular, the compounds isolated from E. chevalieri showed promising bioactivity against well-known and emerging pathogens.
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Affiliation(s)
- Elena Bovio
- Mycotheca Universitatis Taurinensis, Department of Life Sciences and Systems Biology, University of Turin, Viale Mattioli 25, 10125 Turin, Italy.
- University Nice Côte d'Azur, CNRS, Nice Institute of Chemistry, UMR 7272, Marine Natural Products Team, 60103 Nice, France.
| | - Laura Garzoli
- Mycotheca Universitatis Taurinensis, Department of Life Sciences and Systems Biology, University of Turin, Viale Mattioli 25, 10125 Turin, Italy.
| | - Anna Poli
- Mycotheca Universitatis Taurinensis, Department of Life Sciences and Systems Biology, University of Turin, Viale Mattioli 25, 10125 Turin, Italy.
| | - Anna Luganini
- Laboratory of Microbiology and Virology, Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123 Turin, Italy.
| | - Pietro Villa
- Laboratory of Clinical Microbiology and Virology, Department of Medicine, University of Milano-Bicocca, via Cadore 48, 20900 Monza, Italy.
| | - Rosario Musumeci
- Laboratory of Clinical Microbiology and Virology, Department of Medicine, University of Milano-Bicocca, via Cadore 48, 20900 Monza, Italy.
| | - Grace P McCormack
- Zoology, Ryan Institute, School of Natural Sciences, National University of Ireland Galway, University Road, Galway H91 TK33, Ireland.
| | - Clementina E Cocuzza
- Laboratory of Clinical Microbiology and Virology, Department of Medicine, University of Milano-Bicocca, via Cadore 48, 20900 Monza, Italy.
| | - Giorgio Gribaudo
- Laboratory of Microbiology and Virology, Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123 Turin, Italy.
| | - Mohamed Mehiri
- University Nice Côte d'Azur, CNRS, Nice Institute of Chemistry, UMR 7272, Marine Natural Products Team, 60103 Nice, France.
| | - Giovanna C Varese
- Mycotheca Universitatis Taurinensis, Department of Life Sciences and Systems Biology, University of Turin, Viale Mattioli 25, 10125 Turin, Italy.
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Two new phenazine metabolites with antimicrobial activities from soil-derived Streptomyces species. J Antibiot (Tokyo) 2019; 72:574-577. [DOI: 10.1038/s41429-019-0163-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 02/08/2019] [Accepted: 02/08/2019] [Indexed: 12/13/2022]
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Adlin Jenifer JSC, Michaelbabu M, Eswaramoorthy Thirumalaikumar CL, Jeraldin Nisha SR, Uma G, Citarasu T. Antimicrobial potential of haloalkaliphilic Nocardiopsis sp. AJ1 isolated from solar salterns in India. J Basic Microbiol 2019; 59:288-301. [PMID: 30604885 DOI: 10.1002/jobm.201800252] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 09/24/2018] [Accepted: 11/30/2018] [Indexed: 11/10/2022]
Abstract
Antagonistic haloalkaliphilic Nocardiopsis sp. AJ1 (GenBank JX575136.1), isolated and identified from the saline soil of Kovalam solar salterns was able to produce antimicrobial secondary metabolites and effectively suppressed several bacterial and fungal pathogens. The metabolite extracted from ethyl acetate precipitation suppressed the bacterial and fungal pathogens to the range between 2.14 and 20.14 mm and also controlled the shrimp killer virus WSSV by 83% than the control and significantly (p < 0.05) differed. GC-MS analysis revealed that, the ethyl acetate precipitation contains pyrrolo (1,2-A(pyrazine-1,4-dione, hexahydro-3-(2-methylpropyl)-) and actinomycin C2. Non ribosomal peptide synthetase (NRPS) was amplified by PCR with the amplicon size of 750-800 bp length and further predicted the secondary structure by Iterative Threading Assembly Refinement (I-TASSER) bioinformatics approach. I-TASSER prediction helped to find out the secondary, 3-D structure, and ligand binding sites. The top ten modelling concluded that, the NRPS gene is closely similar to surfactin synthesizing gene, surfactin A synthetase C (SRFA-C). The findings revealed that, the active compounds from the secondary metabolites effectively suppressed the pathogenic bacteria, fungi, and virus and useful to develop antimicrobials.
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Affiliation(s)
| | - Mariavincent Michaelbabu
- Centre for Marine Science and Technology, Manonmaniam Sundaranar University, Rajakkamangalam, Kanyakumari District, Tamilnadu, India
| | | | - Selva Raj Jeraldin Nisha
- Centre for Marine Science and Technology, Manonmaniam Sundaranar University, Rajakkamangalam, Kanyakumari District, Tamilnadu, India
| | - Ganapathi Uma
- Centre for Marine Science and Technology, Manonmaniam Sundaranar University, Rajakkamangalam, Kanyakumari District, Tamilnadu, India
| | - Thavasimuthu Citarasu
- Centre for Marine Science and Technology, Manonmaniam Sundaranar University, Rajakkamangalam, Kanyakumari District, Tamilnadu, India
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40
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New phenylpropanoids from Bulbophyllum retusiusculum. Arch Pharm Res 2018; 41:1074-1081. [DOI: 10.1007/s12272-018-1067-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2017] [Accepted: 08/12/2018] [Indexed: 12/27/2022]
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41
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Ibrahim AH, Attia EZ, Hajjar D, Anany MA, Desoukey SY, Fouad MA, Kamel MS, Wajant H, Gulder TAM, Abdelmohsen UR. New Cytotoxic Cyclic Peptide from the Marine Sponge-Associated Nocardiopsis sp. UR67. Mar Drugs 2018; 16:md16090290. [PMID: 30134565 PMCID: PMC6174345 DOI: 10.3390/md16090290] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 08/16/2018] [Accepted: 08/17/2018] [Indexed: 01/04/2023] Open
Abstract
A new cyclic hexapeptide, nocardiotide A (1), together with three known compounds—tryptophan (2), kynurenic acid (3), and 4-amino-3-methoxy benzoic acid (4)—were isolated and identified from the broth culture of Nocardiopsis sp. UR67 strain associated with the marine sponge Callyspongia sp. from the Red Sea. The structure elucidation of the isolated compounds were determined based on detailed spectroscopic data including 1D and 2D nuclear magnetic resonance (NMR) experimental analyses in combination with high resolution electrospray ionization mass spectrometry (HR-ESI-MS), while the absolute stereochemistry of all amino acids components of nocardiotide A (1) was deduced using Marfey’s method. Additionally, ten known metabolites were dereplicated using HR-ESI-MS analysis. Nocardiotide A (1) displayed significant cytotoxic effects towards the murine CT26 colon carcinoma, human HeLa cervix carcinoma, and human MM.1S multiple myeloma cell lines. The results obtained revealed sponge-associated Nocardiopsis as a substantial source of lead natural products with pronounced pharmacological activities.
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Affiliation(s)
- Alyaa Hatem Ibrahim
- Department of Pharmacognosy, Faculty of Pharmacy, Sohag University, 82524 Sohag, Egypt.
| | - Eman Zekry Attia
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, 61519 Minia, Egypt.
| | - Dina Hajjar
- Department of Biochemistry, Faculty of Science, Center for Science and Medical Research, University of Jeddah, 80203 Jeddah, Saudi Arabia.
| | - Mohamed A Anany
- Division of Molecular Internal Medicine, Department of Internal Medicine II, University Hospital Würzburg, Röntenring 11, 97070 Würzburg, Germany.
- Division of Genetic Engineering and Biotechnology, Department of Microbial Biotechnology, National Research Centre, El Buhouth St., Dokki, 12622 Giza, Egypt.
| | - Samar Yehia Desoukey
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, 61519 Minia, Egypt.
| | - Mostafa Ahmed Fouad
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, 61519 Minia, Egypt.
| | - Mohamed Salah Kamel
- Department of Pharmacognosy, Faculty of Pharmacy, Deraya University, Universities Zone, 61111 New Minia City, Egypt.
| | - Harald Wajant
- Division of Molecular Internal Medicine, Department of Internal Medicine II, University Hospital Würzburg, Röntenring 11, 97070 Würzburg, Germany.
| | - Tobias A M Gulder
- Biosystems Chemistry, Department of Chemistry and Center for Integrated Protein Science Munich (CIPSM), Technical University of Munich, Lichtenbergstraβe 4, 85748 Garching, Germany.
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Xu X, Han L, Zhao L, Chen X, Miao C, Hu L, Huang X, Chen Y, Li Y. Echinosporin antibiotics isolated from Amycolatopsis strain and their antifungal activity against root-rot pathogens of the Panax notoginseng. Folia Microbiol (Praha) 2018; 64:171-175. [PMID: 30117099 DOI: 10.1007/s12223-018-0642-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 08/09/2018] [Indexed: 01/10/2023]
Abstract
Actinomycete strain YIM PH20520, isolated from the rhizosphere soil sample of Panax notoginseng collected in Wenshang, Yunnan Province, China, exhibited antifungal activity against root-rot pathogens of the Panax notoginseng. The structures of bioactive molecules, isolated from the ethyl acetate extract of the fermentation broth of the strain, were identified as echinosporin (1) and 7-deoxyechinosporin (2) based on extensive spectroscopic analyses. 1 exhibited antifungal activity against four tested root-rot pathogens of Panax notoginseng include Fusarium oxysporum, Fusarium solani, Alternaria panax, and Phoma herbarum with the MIC value at 64, 64, 32, and 64 μg/mL, respectively. 2 exhibited antifungal activities against F. oxysporum, F. solani, A. panax, and P. herbarum with the MIC value at 128, 128, 64, and 128 μg/mL, respectively. Based on the phylogenetic analyses, the closest phylogenetic relative of strain YIM PH20520 is Amycolatopsis speibonae JS72T (97.69%), so strain YIM PH20520 was identified as Amycolatopsis strain. To the best of our knowledge, this is the first report of echinosporin antibiotics isolated from Amycolatopsis strain besides Streptomyces strain and their antifungal activity against four tested root-rot pathogens of the Panax notoginseng. The results provide a reliable evidence for the following related biosynthetic investigations on Amycolatopsis strain YIM PH20520 due to echinosporins antibiotics' unique tricyclic acetal-lactone structures.
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Affiliation(s)
- Xindong Xu
- Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education, College of Life Sciences, Yunnan University, Kunming, 650091, China
| | - Li Han
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University, Shenyang, 110819, China.
| | - Lixing Zhao
- Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education, College of Life Sciences, Yunnan University, Kunming, 650091, China
| | - Xiao Chen
- Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education, College of Life Sciences, Yunnan University, Kunming, 650091, China
| | - Cuiping Miao
- Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education, College of Life Sciences, Yunnan University, Kunming, 650091, China
| | - Linfang Hu
- Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education, College of Life Sciences, Yunnan University, Kunming, 650091, China
| | - Xueshi Huang
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University, Shenyang, 110819, China
| | - Youwei Chen
- Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education, College of Life Sciences, Yunnan University, Kunming, 650091, China
| | - Yiqing Li
- Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education, College of Life Sciences, Yunnan University, Kunming, 650091, China.
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Secondary Metabolites from the Root Rot Biocontrol Fungus Phlebiopsis gigantea. Molecules 2018; 23:molecules23061417. [PMID: 29895730 PMCID: PMC6100525 DOI: 10.3390/molecules23061417] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 06/09/2018] [Accepted: 06/11/2018] [Indexed: 12/29/2022] Open
Abstract
Three cyclopentanoids (phlebiopsin A⁻C), one glycosylated p-terphenyl (methyl-terfestatin A), and o-orsellinaldehyde were isolated from the biocontrol fungus Phlebiopsis gigantea, and their structures were elucidated by 1D and 2D NMR spectroscopic analysis, as well as by LC-HRMS. The biological activity of the compounds against the root rot fungus Heterobasidion occidentale, as well as against Fusarium oxysporum and Penicillium canescens, was also investigated, but only o-orsellinaldehyde was found to have any antifungal activity in the concentration range tested.
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Thirumurugan D, Vijayakumar R, Vadivalagan C, Karthika P, Alam Khan MK. Isolation, structure elucidation and antibacterial activity of methyl-4,8-dimethylundecanate from the marine actinobacterium Streptomyces albogriseolus ECR64. Microb Pathog 2018; 121:166-172. [PMID: 29775727 DOI: 10.1016/j.micpath.2018.05.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 05/14/2018] [Accepted: 05/14/2018] [Indexed: 12/30/2022]
Abstract
Around 120 actinobacterial colonies were isolated from various regions of marine East coast region of Tamil Nadu, India. Among them, 33 were morphologically distinct and they were preliminarily screened for their antibacterial activity against Pseudomonas fluorescens, Vibrio cholerae, V. parahaemolyticus, V. alginolyticus, and Aeromonas hydrophila by cross-streak plate technique. Among the isolated, the isolate ECR64 exhibited maximum zone of inhibition against fish pathogenic bacteria. The crude bioactive compounds were extracted from the isolate ECR64 using different organic solvents which exhibited maximum antibacterial activity. Separation and purification of the bioactive compounds were made by column chromatography which yielded 27 fractions and were re-chromatographed to obtain the active compound. Ultra violet (UV), Fourier transform infrared (FT-IR) and nuclear magnetic resonance (NMR) spectral studies were used to predict the structure of the active compound which was identified as methyl-4,8-dimethylundecanate. The potential isolate ECR64 was identified as Streptomyces albogriseolus by phylogenetic, phenotypic and genotypic (16S rRNA gene sequence) analyses. The identified compound methyl-4,8-dimethylundecanate can be used as potential and alternative drug in disease management of aquaculture.
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Affiliation(s)
- Durairaj Thirumurugan
- Department of Biotechnology, SRM Institute of Science and Technology, Kattankulathur, Kancheepuram, India.
| | - Ramasamy Vijayakumar
- Department of Microbiology, Bharathidasan University Constituent College, Kurumbalur, Perambalur, India
| | - Chithravel Vadivalagan
- Entomology Laboratory, Department of Zoology, Bharathiar University, Coimbatore, Tamil Nadu, India
| | - Pushparaj Karthika
- Department of Zoology, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore, 641 043, Tamil Nadu, India
| | - Md Khurshid Alam Khan
- School of Life Sciences, B. S. Abdur Rahman Crescent Institute of Science and Technology, Vandalur, Chennai, India
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Ibrahim AH, Desoukey SY, Fouad MA, Kamel MS, Gulder TAM, Abdelmohsen UR. Natural Product Potential of the Genus Nocardiopsis. Mar Drugs 2018; 16:md16050147. [PMID: 29710816 PMCID: PMC5983278 DOI: 10.3390/md16050147] [Citation(s) in RCA: 23] [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: 04/01/2018] [Revised: 04/25/2018] [Accepted: 04/26/2018] [Indexed: 01/01/2023] Open
Abstract
Actinomycetes are a relevant source of novel bioactive compounds. One of the pharmaceutically and biotechnologically important genera that attract natural products research is the genus Nocardiopsis, mainly for its ability to produce a wide variety of secondary metabolites accounting for its wide range of biological activities. This review covers the literature from January 2015 until February 2018 making a complete survey of all the compounds that were isolated from the genus Nocardiopsis, their biological activities, and natural sources, whenever applicable.
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Affiliation(s)
- Alyaa Hatem Ibrahim
- Department of Pharmacognosy, Faculty of Pharmacy, Sohag University, Sohag 82524, Egypt.
| | - Samar Yehia Desoukey
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia 61519, Egypt.
| | - Mostafa A Fouad
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia 61519, Egypt.
| | - Mohamed Salah Kamel
- Department of Pharmacognosy, Faculty of Pharmacy, Deraya University, Universities Zone, New Minia City, Minia 61111, Egypt.
| | - Tobias A M Gulder
- Department of Chemistry and Center for Integrated Protein Science Munich (CIPSM), Department of Chemistry, Biosystems Chemistry, Technical University of Munich, Lichtenbergstraβe 4, 85748 Garching, Germany.
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Abstract
The human β-site amyloid cleaving enzyme (BACE1) has been considered as an effective drug target for treatment of Alzheimer’s disease (AD). In this study, Urechis unicinctus (U. unicinctus), which is a Far East specialty food known as innkeeper worm, ethanol extract was studied by bioassay-directed fractionation and isolation to examine its potential β-site amyloid cleaving enzyme inhibitory and antimicrobial activity. The following compounds were characterized: hecogenin, cholest-4-en-3-one, cholesta-4,6-dien-3-ol, and hurgadacin. These compounds were identified by their mass spectrometry, 1H, and 13C NMR spectral data, comparing those data with NIST/EPA/NIH Mass spectral database (NIST11) and published values. Hecogenin and cholest-4-en-3-one showed significant inhibitory activity against BACE1 with EC50 values of 116.3 and 390.6 µM, respectively. Cholesta-4,6-dien-3-ol and hurgadacin showed broad spectrum antimicrobial activity, particularly strongly against Escherichia coli (E. coli), Salmonella enterica (S. enterica), Pasteurella multocida (P. multocida), and Physalospora piricola (P. piricola), with minimal inhibitory concentration (MIC) ranging from 0.46 to 0.94 mg/mL. This is the first report regarding those four known compounds that were isolated from U. unicinctus and their anti-BACE1 and antimicrobial activity, highlighting the fact that known natural compounds may be a critical source of new medicine leads. These findings provide scientific evidence for potential application of those bioactive compounds for the development of AD drugs and antimicrobial agents.
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Li W, Li XB, Lou HX. Structural and biological diversity of natural p-terphenyls. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2018; 20:1-13. [PMID: 29027823 DOI: 10.1080/10286020.2017.1381089] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 09/14/2017] [Indexed: 06/07/2023]
Abstract
p-Terphenyls consisting of a C-18 tricyclic or polycyclic C-18 aromatic skeleton, have diverse structures because of the variation of the middle ring and the connections between the rings, and to the main skeleton. p-Terphenyls have recently been found to exhibit various biological activities such as cytotoxic, α-glucosidase inhibitory, antioxidant, and antimicrobial activity. In this review, we briefly summarized the structural varieties, biosyntheses, and bioactivities of natural p-terphenyl derivatives referring to the recent 10 years' publications.
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Affiliation(s)
- Wei Li
- a Pharmacy Department of Suqian People's Hospital , Drum Tower Hospital Group of Nanjing , Suqian 223800 , China
| | - Xiao-Bin Li
- b Key Laboratory for Biosensor of Shandong Province, Key Laboratory for Drug Screening Technology of Shandong Academy of Sciences, Shandong Provincial Engineering Laboratory for Biological Testing Technology , Biology Institute of Shandong Academy of Sciences , Jinan 250014 , China
| | - Hong-Xiang Lou
- c Key Lab of Chemical Biology of Ministry of Education, Department of Natural Products Chemistry, School of Pharmaceutical Sciences , Shandong University , Jinan 250012 , China
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Bai HH, Wang NN, Mi J, Yang T, Fang DM, Wu LW, Zhao H, Li GY. Hydroxycinnamoylmalated flavone C -glycosides from Lemna japonica. Fitoterapia 2018; 124:211-216. [DOI: 10.1016/j.fitote.2017.11.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 11/09/2017] [Accepted: 11/13/2017] [Indexed: 01/20/2023]
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Hadj Rabia-Boukhalfa Y, Eveno Y, Karama S, Selama O, Lauga B, Duran R, Hacène H, Eparvier V. Isolation, purification and chemical characterization of a new angucyclinone compound produced by a new halotolerant Nocardiopsis sp. HR-4 strain. World J Microbiol Biotechnol 2017; 33:126. [DOI: 10.1007/s11274-017-2292-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 05/20/2017] [Indexed: 01/10/2023]
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