1
|
Xavier LA, do Nascimento Odilair LM, de Sousa GP, Souza ECA, Pilau EJ, Porto C, de Souza AQL, de Souza ADL, Flach A, da Costa LAMA. Ultra-high-performance liquid chromatography combined with electrospray ionization quadrupole time-of-flight mass spectrometry and molecular networking analysis to investigate the chemodiversity of bioactive extracts of Annona jahnii Saff. fungi from the Brazilian Amazon. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2022; 36:e9356. [PMID: 35866211 DOI: 10.1002/rcm.9356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 07/15/2022] [Accepted: 07/16/2022] [Indexed: 06/15/2023]
Abstract
RATIONALE Annona species are of interest for the isolation of bioactive molecules; however, studies of Annona jahnii Saff. are limited. The exploration of bioactive metabolites of endophytes isolated from this species is unprecedented and allows the preservation of the host plant, in addition to enabling the discovery of compounds with promising biological activities. METHODS Ethyl acetate extracts from the cultured media of five fungi were obtained. The antioxidant capacity of the extracts was measured using the 1,1-diphenyl-2-picrylhydrazyl free radical method. Antimicrobial activity was determined using the microdilution method in broth in 96-well plates. The exploration of the metabolic profile of the extracts and dereplication of the compounds were performed using ultra-high-performance liquid chromatography/electrospray ionization/tandem mass spectrometry (UHPLC/ESI-MS/MS) combined with analysis using molecular networking (MN). RESULTS A total of 1818 MS features were detected in the five selected extracts, of which 39 compounds were putatively identified. The secondary metabolites with the highest abundance were alkaloids, naphthopyrons, and cytochalasins. Other secondary metabolites include fumonisins, coumarin, and a meroterpenoid. Most of these compounds are related to specific biological properties such as antioxidant, anti-inflammatory, antimicrobial, antiviral, and antitumor activities. Extracts F398 and F403 showed inhibitory activity of the four pathogens tested. Extracts F475 and F506 did not inhibit the growth of Staphylococcus aureus, and F407 did not inhibit the growth of Escherichia coli in addition to having potent antioxidant activity, with IC50 values of 10 μg/mL or less. CONCLUSIONS The use of UHPLC/ESI-MS/MS data combined with MN proved useful in the dereplication of bioactive molecules of complex extracts that are still unexplored. These initial investigations should significantly assist in further research and increase the efficiency and speed in the discovery of new sources of secondary metabolites and new natural products.
Collapse
Affiliation(s)
- Luciana Araújo Xavier
- Universidade Federal de Roraima-Programa de Pós-graduação em Biodiversidade e Biotecnologia da Amazônia, Boa Vista, RR, Brazil
| | | | - Gilmara Prado de Sousa
- Universidade Federal de Roraima-Programa de Pós-graduação em Recursos Naturais, Boa Vista, RR, Brazil
| | - Edineide Cristina A Souza
- Universidade Federal de Roraima-Programa de Pós-graduação em Biodiversidade e Biotecnologia da Amazônia, Boa Vista, RR, Brazil
| | - Eduardo Jorge Pilau
- Departamento de Química, Universidade Estadual de Maringá, Maringá, PR, Brazil
| | - Carla Porto
- MS Bioscience-Incubadora Tecnológica de Maringá-Complexo UEM, Maringá, PR, Brazil
| | - Antônia Queiroz Lima de Souza
- Universidade Federal do Amazonas-Programa de Pós-graduação em Biodiversidade e Biotecnologia da Amazônia, Manaus, AM, Brazil
| | - Afonso Duarte Leão de Souza
- Universidade Federal do Amazonas-Programa de Pós-graduação em Biodiversidade e Biotecnologia da Amazônia, Manaus, AM, Brazil
| | - Adriana Flach
- Universidade Federal de Roraima-Programa de Pós-graduação em Biodiversidade e Biotecnologia da Amazônia, Boa Vista, RR, Brazil
| | - Luiz Antonio M A da Costa
- Universidade Federal de Roraima-Programa de Pós-graduação em Biodiversidade e Biotecnologia da Amazônia, Boa Vista, RR, Brazil
| |
Collapse
|
2
|
Carboué Q, Maresca M, Herbette G, Roussos S, Hamrouni R, Bombarda I. Naphtho-Gamma-Pyrones Produced by Aspergillus tubingensis G131: New Source of Natural Nontoxic Antioxidants. Biomolecules 2019; 10:biom10010029. [PMID: 31878243 PMCID: PMC7023098 DOI: 10.3390/biom10010029] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 12/20/2019] [Accepted: 12/20/2019] [Indexed: 12/19/2022] Open
Abstract
Seven naphtho-gamma-pyrones (NγPs), including asperpyrone E, aurasperone A, dianhydroaurasperone C, fonsecin, fonsecinone A, fonsecin B, and ustilaginoidin A, were isolated from Aspergillus tubingensis G131, a non-toxigenic strain. The radical scavenging activity of these NγPs was evaluated using ABTS assay. The Trolox equivalent antioxidant capacity on the seven isolated NγPs ranged from 2.4 to 14.6 μmol L-1. The toxicity and ability of the NγPs to prevent H2O2-mediated cell death were evaluated using normal/not cancerous cells (CHO cells). This cell-based assay showed that NγPs: (1) Are not toxic or weakly toxic towards cells and (2) are able to protect cells from oxidant injuries with an IC50 on H2O2-mediated cell death ranging from 2.25 to 1800 μmol mL-1. Our data show that A. tubingensis G131 strain is able to produce various NγPs possessing strong antioxidant activities and low toxicities, making this strain a good candidate for antioxidant applications in food and cosmetic industries.
Collapse
Affiliation(s)
- Quentin Carboué
- Vinovalie, ZA les portes du Tarn, 81370 Saint-Sulpice-la-Pointe, France
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, 13397 Marseille, France; (S.R.); (R.H.)
- Correspondence: (Q.C.); (M.M.); (I.B.); Tel.: +33-491-28-8254 (M.M.)
| | - Marc Maresca
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, 13397 Marseille, France
- Correspondence: (Q.C.); (M.M.); (I.B.); Tel.: +33-491-28-8254 (M.M.)
| | - Gaëtan Herbette
- Aix Marseille Univ, CNRS, Centrale Marseille, FSCM, Spectropole, 13397 Marseille, France;
| | - Sevastianos Roussos
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, 13397 Marseille, France; (S.R.); (R.H.)
| | - Rayhane Hamrouni
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, 13397 Marseille, France; (S.R.); (R.H.)
| | - Isabelle Bombarda
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, 13397 Marseille, France; (S.R.); (R.H.)
- Correspondence: (Q.C.); (M.M.); (I.B.); Tel.: +33-491-28-8254 (M.M.)
| |
Collapse
|
3
|
Antonov AS, Leshchenko EV, Zhuravleva OI, Dyshlovoy SA, von Amsberg G, Popov RS, Denisenko VA, Kirichuk NN, Afiyatullov SS. Naphto-Γ-pyrones from the marine-derived fungus Aspergillus foetidus. Nat Prod Res 2019; 35:131-134. [PMID: 31242774 DOI: 10.1080/14786419.2019.1610954] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Nine naphto-γ-pyrones rubrofusarine B (1), TMC 256 A1 (2), fansecinones A (3) and B (4), aurasperones A (5), B (6) and F (7), dianhydro-aurasperone C (8) and asperpyrone B (9) were isolated from the marine-derived fungus Aspergillus foetidus KMM 4694. Their structures were established based on spectroscopic methods. The effect of the substances on viability and colony formation of human drug-resistant prostate cancer 22Rv1 cell was evaluated.
Collapse
Affiliation(s)
- Alexander S Antonov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Vladivostok, Russian Federation
| | - Elena V Leshchenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Vladivostok, Russian Federation.,Far Eastern Federal University, Vladivostok, Russian Federation
| | - Olesya I Zhuravleva
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Vladivostok, Russian Federation.,Far Eastern Federal University, Vladivostok, Russian Federation
| | - Sergey A Dyshlovoy
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Vladivostok, Russian Federation.,Far Eastern Federal University, Vladivostok, Russian Federation.,Department of Oncology, Hematology and Bone Marrow Transplantation with Section Pneumology, Hubertus Wald-Tumorzentrum, University Medical Center Hamburg-Eppendorf, Humburg, Germany
| | - Gunhild von Amsberg
- Department of Oncology, Hematology and Bone Marrow Transplantation with Section Pneumology, Hubertus Wald-Tumorzentrum, University Medical Center Hamburg-Eppendorf, Humburg, Germany
| | - Roman S Popov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Vladivostok, Russian Federation
| | - Vladimir A Denisenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Vladivostok, Russian Federation
| | - Natalya N Kirichuk
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Vladivostok, Russian Federation
| | - Shamil Sh Afiyatullov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Vladivostok, Russian Federation
| |
Collapse
|
4
|
Choque E, El Rayess Y, Raynal J, Mathieu F. Fungal naphtho-γ-pyrones—secondary metabolites of industrial interest. Appl Microbiol Biotechnol 2014; 99:1081-96. [DOI: 10.1007/s00253-014-6295-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 12/02/2014] [Accepted: 12/04/2014] [Indexed: 01/08/2023]
|
5
|
Bis-naphtho-γ-pyrones from fungi and their bioactivities. Molecules 2014; 19:7169-88. [PMID: 24886942 PMCID: PMC6270783 DOI: 10.3390/molecules19067169] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Revised: 05/23/2014] [Accepted: 05/27/2014] [Indexed: 11/17/2022] Open
Abstract
Bis-naphtho-γ-pyrones are an important group of aromatic polyketides derived from fungi. They have a variety of biological activities including cytotoxic, antitumor, antimicrobial, tyrosine kinase and HIV-1 integrase inhibition properties, demonstrating their potential applications in medicine and agriculture. At least 59 bis-naphtho-γ-pyrones from fungi have been reported in the past few decades. This mini-review aims to briefly summarize their occurrence, biosynthesis, and structure, as well as their biological activities. Some considerations regarding to synthesis, production, and medicinal and agricultural applications of bis-naphtho-γ-pyrones are also discussed.
Collapse
|
6
|
Xiao J, Zhang Q, Gao YQ, Shi XW, Gao JM. Antifungal and antibacterial metabolites from an endophyticAspergillussp. associated withMelia azedarach. Nat Prod Res 2014; 28:1388-92. [DOI: 10.1080/14786419.2014.904308] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
7
|
Ilangovan A, Sakthivel P. Simple access to 5-carboalkoxy-2,3-dihydro-4H-pyran-4-ones via domino acylative electrocyclization: the first three step total synthesis of the dihydronaphthopyran-4-one class of natural products. RSC Adv 2014. [DOI: 10.1039/c4ra11174e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
5-Carboalkoxy-2,3-dihydropyran-4-ones synthesised via domino C-acylation/6π-oxaelectrocyclization protocol was employed as a starting material for the first three step total synthesis of dihydronaphthopyran-4-one class of natural products.
Collapse
Affiliation(s)
- Andivelu Ilangovan
- School of Chemistry
- Bharathidasan University
- Tiruchirappalli-620 024, India
| | | |
Collapse
|
8
|
Li XB, Xie F, Liu SS, Li Y, Zhou JC, Liu YQ, Yuan HQ, Lou HX. Naphtho-γ-pyrones from EndophyteAspergillus nigerOccurring in the LiverwortHeteroscyphus tener(Steph.)Schiffn. Chem Biodivers 2013; 10:1193-201. [DOI: 10.1002/cbdv.201300042] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Indexed: 11/12/2022]
|
9
|
Aromatic polyketides from a sponge-derived fungus Metarhizium anisopliae mxh-99 and their antitubercular activities. Arch Pharm Res 2013; 36:739-44. [PMID: 23463335 DOI: 10.1007/s12272-013-0077-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Accepted: 02/25/2013] [Indexed: 10/27/2022]
Abstract
In our screening for antitubercular agents, five naphtho-γ-pyrones including two new naphtho-γ-pyrones glycosides, indigotides G and H (1 and 2), and two diphenyl ethers were isolated from the extract of a sponge-derived fungus Metarhizium anisopliae mxh-99. Their structures were established on the basis of chemical and spectroscopic evidence. The antitubercular activities of all the compounds were evaluated against Mycobacterium phlei. The known isochaetochromin B2 (6) and ustilaginoidin D (7) exhibited the highest activity with MICs 50.0 μg/mL.
Collapse
|
10
|
Bokesch HR, Cartner LK, Fuller RW, Wilson JA, Henrich CJ, Kelley JA, Gustafson KR, McMahon JB, McKee TC. Inhibition of ABCG2-mediated drug efflux by naphthopyrones from marine crinoids. Bioorg Med Chem Lett 2010; 20:3848-50. [PMID: 20627559 PMCID: PMC2924950 DOI: 10.1016/j.bmcl.2010.05.057] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2010] [Accepted: 05/14/2010] [Indexed: 12/11/2022]
Abstract
Five new naphthopyrones (1-5) along with the known compounds TMC-256A1, 5,8-dihydroxy-6-methoxy-2-propyl-4H-naphtho[2,3-b]pyran-4-one, TMC-256C1, comaparvin, 6-methoxycomaparvin, and 6-methoxycomaparvin 5-methyl ether (6-11) were isolated from crinoids of the family Comasteridae. All compounds were tested for their ability to inhibit the multidrug transporter ABCG2, which plays a role in drug resistance. Six of the seven angular naphthopyrones showed moderate activity with <60% inhibition of ABCG2-mediated transport as compared to the positive control fumitremorgin C. None of the linear naphthopyrones inhibited ABCG2-mediated efflux.
Collapse
Affiliation(s)
- Heidi R Bokesch
- Molecular Targets Laboratory, NCI-Frederick, Frederick, MD 21702, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
11
|
Nielsen KF, Mogensen JM, Johansen M, Larsen TO, Frisvad JC. Review of secondary metabolites and mycotoxins from the Aspergillus niger group. Anal Bioanal Chem 2009; 395:1225-42. [PMID: 19756540 DOI: 10.1007/s00216-009-3081-5] [Citation(s) in RCA: 220] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2009] [Revised: 08/17/2009] [Accepted: 08/18/2009] [Indexed: 11/26/2022]
Abstract
Filamentous fungi in the Aspergillus section Nigri (the black aspergilli) represent some of the most widespread food and feed contaminants known but they are also some of the most important workhorses used by the biotechnological industry. The Nigri section consists of six commonly found species (excluding A. aculeatus and its close relatives) from which currently 145 different secondary metabolites have been isolated and/or detected. From a human and animal safety point of view, the mycotoxins ochratoxin A (from A. carbonarius and less frequently A. niger) and fumonisin B(2) (from A. niger) are currently the most problematic compounds. Especially in foods and feeds such as coffee, nuts, dried fruits, and grape-based products where fumonisin-producing fusaria are not a problem, fumonisins pose a risk. Moreover, compounds such as malformins, naptho-gamma-pyrones, and bicoumarins (kotanins) call for monitoring in food, feed, and biotechnology products as well as for a better toxicological evaluation, since they are often produced in large amounts by the black aspergilli. For chemical differentiation/identification of the less toxic species the diketopiperazine asperazine can be used as a positive marker since it is consistently produced by A. tubingensis (177 of 177 strains tested) and A. acidus (47 of 47 strains tested) but never by A. niger (140 strains tested). Naptho-gamma-pyrones are the compounds produced in the highest quantities and are produced by all six common species in the group (A. niger 134 of 140; A. tubingensis 169 of 177; A. acidus 44 of 47; A. carbonarius 40 of 40, A. brasiliensis 18 of 18; and A. ibericus three of three).
Collapse
Affiliation(s)
- Kristian Fog Nielsen
- Center for Microbial Biotechnology, Department of Systems Biology, Technical University of Denmark, Søltofts Plads 221, 2800 Kgs, Lyngby, Denmark
| | | | | | | | | |
Collapse
|
12
|
Bräse S, Encinas A, Keck J, Nising CF. Chemistry and Biology of Mycotoxins and Related Fungal Metabolites. Chem Rev 2009; 109:3903-90. [DOI: 10.1021/cr050001f] [Citation(s) in RCA: 411] [Impact Index Per Article: 27.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Stefan Bräse
- Institut für Organische Chemie,Karlsruhe Institute of Technology, Fritz-Haber-Weg 6, D-76131 Karlsruhe, Germany
| | - Arantxa Encinas
- Institut für Organische Chemie,Karlsruhe Institute of Technology, Fritz-Haber-Weg 6, D-76131 Karlsruhe, Germany
| | - Julia Keck
- Institut für Organische Chemie,Karlsruhe Institute of Technology, Fritz-Haber-Weg 6, D-76131 Karlsruhe, Germany
| | - Carl F. Nising
- Institut für Organische Chemie,Karlsruhe Institute of Technology, Fritz-Haber-Weg 6, D-76131 Karlsruhe, Germany
| |
Collapse
|
13
|
Bouras N, Mathieu F, Coppel Y, Strelkov SE, Lebrihi A. Occurrence of naphtho-gamma-pyrones- and ochratoxin A-producing fungi in French grapes and characterization of new naphtho-gamma-pyrone polyketide (aurasperone G) isolated from Aspergillus niger C-433. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2007; 55:8920-7. [PMID: 17907778 DOI: 10.1021/jf071406z] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
A survey on the occurrence on grape of fungi species in 2001 and their capability to produce ochratoxin A (OTA) and naphtho-gamma-pyrones (NGPs) was conducted in different vineyards from several French viticulture regions. The total numbers of fungal isolates, from setting to harvest, were 732. The Aspergillus genus was essentially represented by section Nigri (98.53%) and it was predominant (74.72%) when compared to Penicillium (25.27%). Approximately one third (30.46%) of the fungal isolates were OTA producers, and 94.17% belong to black aspergilli; Aspergillus carbonarius was the main OTA producer. Moreover, 8.33% of isolates (belong to A. carbonarius and A. niger) were NGP producers. However, none of the Penicillium spp. or other Aspergillus spp. isolates can produces NGP derivatives under the conditions used. No other study on NGPs production by fungi isolated from grapes has been reported. In the second part, a novel NGP, named aurasperone G (1), was isolated from the fermentation broth of the culture extracts of Aspergillus niger C-433, strain producer of OTA, along with the known compound aurasperone F (2). The chemical structure of the new polyketide was proposed based on complete (1)H and partial (13)C, COSY, HMQC, 1D NOE NMR spectra as well as UV and MS spectra. This new NGP was not reported before in nature or prepared synthetically.
Collapse
Affiliation(s)
- Noureddine Bouras
- Laboratoire de Génie Chimique, Département Bioprocédés et Systèmes Microbiens, UMR 5503 (CNRS/INPT/UPS), Ecole Nationale Supérieure Agronomique de Toulouse, F-31 326 Castanet-Tolosan Cedex 1, Toulouse, France
| | | | | | | | | |
Collapse
|
14
|
Schlingmann G, Taniguchi T, He H, Bigelis R, Yang HY, Koehn FE, Carter GT, Berova N. Reassessing the structure of pyranonigrin. JOURNAL OF NATURAL PRODUCTS 2007; 70:1180-7. [PMID: 17604395 DOI: 10.1021/np070175n] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Fermentation extracts of the marine fungus Aspergillus niger LL-LV3020 were found to have relevant activity in a number of assays. Chemical screening of the extracts revealed that this organism produced numerous secondary metabolites in addition to its principal metabolite, citric acid. The compound with the most significant UV peak was isolated and its structure elucidated. Physical data suggested that this compound is identical with pyranonigrin A (1); however, our structure elucidation led to a different assignment than previously reported. On the basis of analysis of all data, we propose a correction to the structure of pyranonigrin A. Its absolute configuration was determined by electronic circular dichroism measurements in comparison with theoretical values calculated via ab initio time-dependent density functional theory and assigned as (7R)-3,7-dihydroxy-2-[(1E)-prop-1-enyl]-6,7-dihydropyrano[2,3-c]pyrrole-4,5-dione.
Collapse
Affiliation(s)
- Gerhard Schlingmann
- Department of Natural Products, Chemical and Screening Sciences, Wyeth Research, 401 North Middletown Road, Pearl River, New York 10965, USA.
| | | | | | | | | | | | | | | |
Collapse
|
15
|
Zhan J, Gunaherath GMKB, Kithsiri Wijeratne EM, Leslie Gunatilaka AA. Asperpyrone D and other metabolites of the plant-associated fungal strain Aspergillus tubingensis. PHYTOCHEMISTRY 2007; 68:368-72. [PMID: 17150233 PMCID: PMC3361907 DOI: 10.1016/j.phytochem.2006.09.038] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2006] [Revised: 09/19/2006] [Accepted: 09/30/2006] [Indexed: 05/12/2023]
Abstract
Bioactivity-guided fractionation of a cytotoxic extract of Aspergillus tubingensis, a fungal strain occurring in the rhizosphere of the Sonoran desert plant, Fallugia paradoxa, afforded a dimeric naphtho-gamma-pyrone asperpyrone D, nine known naphtho-gamma-pyrones, funalenone, and the cytotoxic cyclic penta-peptide, malformin A1.
Collapse
|
16
|
Frandsen RJN, Nielsen NJ, Maolanon N, Sørensen JC, Olsson S, Nielsen J, Giese H. The biosynthetic pathway for aurofusarin in Fusarium graminearum reveals a close link between the naphthoquinones and naphthopyrones. Mol Microbiol 2006; 61:1069-80. [PMID: 16879655 DOI: 10.1111/j.1365-2958.2006.05295.x] [Citation(s) in RCA: 134] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Fungal polyketide biosynthesis typically involves multiple enzymatic steps and the encoding genes are often found in gene clusters. A gene cluster containing PKS12, the polyketide synthase gene responsible for the synthesis of the pigment aurofusarin, was analysed by gene replacement using Agrobacterium tumefaciens-mediated transformation to determine the biosynthesis pathway of aurofusarin. Replacement of aurR1 with hygB shows that it encodes a positively acting transcription factor that is required for the full expression of PKS12, aurJ, aurF, gip1 and FG02329.1, which belong to the gene cluster. AurR1 and PKS12 deletion mutants are unable to produce aurofusarin and rubrofusarin. Bio- and chemoinformatics combined with chemical analysis of replacement mutants (DeltaaurJ, DeltaaurF, Deltagip1, DeltaaurO and DeltaPKS12) indicate a five-step enzyme catalysed pathway for the biosynthesis of aurofusarin, with rubrofusarin as an intermediate. This links the biosynthesis of naphthopyrones and naphthoquinones together. Replacement of the putative transcription factor aurR2 results in an increased level of rubrofusarin relative to aurofusarin. Gip1, a putative laccase, is proposed to be responsible for the dimerization of two oxidized rubrofusarin molecules resulting in the formation of aurofusarin.
Collapse
Affiliation(s)
- Rasmus J N Frandsen
- Department of Ecology, The Royal Veterinary and Agricultural University, DK-1871 Frederiksberg C, Copenhagen, Denmark.
| | | | | | | | | | | | | |
Collapse
|
17
|
Bouras N, Mathieu F, Coppel Y, Lebrihi A. Aurasperone F – a new member of the naphtho-gamma-pyrone class isolated from a cultured microfungus,Aspergillus nigerC-433. Nat Prod Res 2005; 19:653-9. [PMID: 16076634 DOI: 10.1080/14786410412331286955] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
A novel dimeric naphtho-gamma-pyrone, named aurasperone F (1), was isolated from the fermentation broth of the culture extracts of Aspergillus niger C-433, isolated from grapes, along with the known compounds fonsecin (2), aurasperone B (3), aurasperone C (4), aurasperone D (5) and aurasperone E (6). The chemical structure of the new natural product was established by extensive one- and two-dimensional NMR spectroscopic studies (1H, 13C, COSY, HMQC, 1D NOE spectra), as well as on the UV, MS and IR spectral analysis.
Collapse
Affiliation(s)
- Noureddine Bouras
- Laboratoire de Génie Chimique, Equipe Génie des Systèmes Microbiens UMR 5503 (CNRS, INPT, UPS), ENSAT, 1, Avenue de l'Agrobiopôle, B.P. 107, F-31 326 Auzeville-Tolosane Cedex, France
| | | | | | | |
Collapse
|
18
|
Song YC, Li H, Ye YH, Shan CY, Yang YM, Tan RX. Endophytic naphthopyrone metabolites are co-inhibitors of xanthine oxidase, SW1116 cell and some microbial growths. FEMS Microbiol Lett 2005; 241:67-72. [PMID: 15556711 DOI: 10.1016/j.femsle.2004.10.005] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2004] [Revised: 09/30/2004] [Accepted: 10/05/2004] [Indexed: 10/26/2022] Open
Abstract
Fractionation of the extract of Aspergillus niger. IFB-E003, an endophyte in Cyndon dactylon, gave four known compounds naphtho-gamma-pyrones rubrofusarin B, fonsecinone A, asperpyrone B and aurasperone A, which were further investigated biologically. Rubrofusarin B was shown to be cytotoxic to the colon cancer cell line SW1116 (IC50: 4.5 microgml-1), and aurasperone A inhibitory on XO (xanthine oxidase) (IC50: 10.9 micromoll-1). Moreover, the four naphtho-gamma-pyrones exhibited growth inhibitions against the five test microbes with MICs ranging in between 1.9 and 31.2 microgml(-1). The present recognition of rubrofusarin B and aurasperone A as strong co-inhibitors on XO, colon cancer cell and some microbial pathogens is of significance for the imperative discovery of new relevant therapeutic agents.
Collapse
Affiliation(s)
- Y C Song
- Institute of Functional Biomolecules, State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, PR China
| | | | | | | | | | | |
Collapse
|
19
|
Blumenthal CZ. Production of toxic metabolites in Aspergillus niger, Aspergillus oryzae, and Trichoderma reesei: justification of mycotoxin testing in food grade enzyme preparations derived from the three fungi. Regul Toxicol Pharmacol 2004; 39:214-28. [PMID: 15041150 DOI: 10.1016/j.yrtph.2003.09.002] [Citation(s) in RCA: 143] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2003] [Indexed: 11/23/2022]
Abstract
Aspergillus niger, Aspergillus oryzae, and Trichoderma reesei are three important production organisms used in industrial fermentations. Several of the fungal secondary metabolites produced by selected strains of these three fungi are capable of eliciting toxicity in animals. Among those toxic substances are the well-known mycotoxins 3-nitropropionic acid and ochratoxin A. However, many others, such as kojic acid, may not be true mycotoxins. The production, extraction, chemical structure, and the toxicity (expressed as LD(50)) of these substances are reviewed. Production of toxic secondary metabolites in A. niger, A. oryzae, and T. reesei is strain-specific and environment-dependent. Considering all of the safety measures taken in the industrial production process, these three fungal species are safe to use. The recently revised JECFA specification for mycotoxins in food enzyme preparations is also discussed. The extent of mycotoxin tests in food enzyme preparations should be judged on a case-by-case basis, through a careful evaluation based on knowledge of taxonomy, biochemistry, and genetics. In many cases, the testing scope at the level of genus should be sufficient. In other cases, the scope can even be further narrowed based on scientific knowledge and assessment.
Collapse
|
20
|
Akiyama K, Teraguchi S, Hamasaki Y, Mori M, Tatsumi K, Ohnishi K, Hayashi H. New dimeric naphthopyrones from Aspergillus niger. JOURNAL OF NATURAL PRODUCTS 2003; 66:136-139. [PMID: 12542363 DOI: 10.1021/np020174p] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Three new dimeric naphthopyrones, asperpyrones A (1), B (2), and C (3), together with two known compounds, fonsecinone A (4) and aurasperone A (5), have been isolated from okara that was fermented with Aspergillus niger JV-33-48. Compounds 1, 4, and 5 showed inhibitory activity on Taq DNA polymerase.
Collapse
Affiliation(s)
- Kohki Akiyama
- Natural Products Chemistry, Division of Applied Biological Chemistry, Graduate School of Agriculture and Biological Sciences, Osaka Prefecture University, 1-1 Gakuencho, Sakai, Osaka 599-8531, Japan
| | | | | | | | | | | | | |
Collapse
|
21
|
Kitazono M, Sumizawa T, Takebayashi Y, Chen ZS, Furukawa T, Nagayama S, Tani A, Takao S, Aikou T, Akiyama S. Multidrug resistance and the lung resistance-related protein in human colon carcinoma SW-620 cells. J Natl Cancer Inst 1999; 91:1647-53. [PMID: 10511592 DOI: 10.1093/jnci/91.19.1647] [Citation(s) in RCA: 137] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Lung resistance-related protein (LRP), the major vault protein in humans, is sometimes overexpressed in multidrug-resistant cells. Because cells transfected with the LRP gene did not express the multidrug-resistant phenotype, we investigated whether LRP is involved in multidrug resistance. METHODS SW-620 cells, a human colon carcinoma cell line, alone or transfected with an expression vector carrying a LRP-specific ribozyme or with an empty vector, were treated with sodium butyrate to induce differentiation. Expression of P-glycoprotein, multidrug resistance protein, and LRP in the cells was examined by northern and western blotting, and the efflux of doxorubicin in the cells or isolated nuclei was examined by fluorescence microscopy. RESULTS A 2-week treatment with sodium butyrate induced LRP and conferred resistance to doxorubicin, vincristine, etoposide, gramicidin D, and paclitaxel (Taxol) in SW-620 cells. Insertion of either of two LRP-specific ribozymes into SW-620 cells inhibited these activities. Levels of drugs accumulating in the cells were not decreased by sodium butyrate, suggesting that the adenosine triphosphate-binding cassette transporter is not involved in sodium butyrate-induced multidrug resistance. Doxorubicin was mainly located in the nuclei of untreated cells and in the cytoplasm of sodium butyrate-treated cells. Isolated nuclei from untreated cells or sodium butyrate-treated cells incubated with anti-LRP polyclonal antibodies contained more doxorubicin than the nuclei of sodium butyrate-treated cells alone. Efflux of doxorubicin was greater from the nuclei of sodium butyrate-treated cells than the nuclei of untreated cells or of sodium butyrate-treated cells transfected with a LRP-specific ribozyme and was inhibited by an anti-LRP polyclonal antibody. CONCLUSIONS LRP is involved in resistance to doxorubicin, vincristine, etoposide, paclitaxel, and gramicidin D and has an important role in the transport of doxorubicin from the nucleus to the cytoplasm.
Collapse
Affiliation(s)
- M Kitazono
- Department of Cancer Chemotherapy, Institute for Cancer Research, and First Department of Surgery, Faculty of Medicine
| | | | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Abstract
BACKGROUND Estramustine previously has been shown to interact with P-glycoprotein and to restore intracellular accumulation of vinblastine and paclitaxel in cells overexpressing this drug transporter. However, the ability of estramustine to potentiate the cytotoxicities of several drugs was less than that expected. To resolve this apparent discordance, the authors examined the effects of serum on the actions of estramustine. METHODS The cytotoxicities of anticancer drugs with or without estramustine or verapamil toward MCF-7 breast carcinoma cells and a P-glycoprotein-overexpressing subline MCF-7/ADR were determined using the sulforhodamine-binding assay. The extent of intracellular accumulation of [3H]vinblastine and [3H]paclitaxel was determined for each using standard methods, and the binding of radiolabeled drugs to plasma proteins was characterized by equilibrium dialysis. RESULTS Without serum, the sensitivities of MCF-7/ADR cells to several P-glycoprotein-transported drugs were increased by estramustine and verapamil. Conversely, when the cells were treated with a 10% serum, the cytotoxicities of these drugs were increased by verapamil, but not by estramustine. Without serum, intracellular accumulation of [3H]vinblastine and [3H]paclitaxel by MCF-7/ADR cells was increased markedly by verapamil and estramustine; however, serum suppressed the effects of estramustine much more strongly than those of verapamil. Equilibrium dialysis experiments demonstrated that [3H]estramustine binds to plasma proteins, predominantly albumin, whereas [3H]paclitaxel binds to albumin and alpha 1-acid-glycoprotein, and [3H]vinblastine binds predominantly to alpha 1-acid-glycoprotein. CONCLUSION Although estramustine can bind to P-glycoprotein, its effectiveness as a reversing agent in vivo likely is limited by binding to plasma proteins.
Collapse
Affiliation(s)
- C D Smith
- Department of Pharmacology, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | | | | | | | | |
Collapse
|
23
|
Ichikawa M, Yoshimura A, Sumizawa T, Shudo N, Kuwazuru Y, Furukawa T, Akiyama S. Interaction of organic chemicals with P-glycoprotein in the adrenal gland, kidney, and a multidrug-resistant KB cell. J Biol Chem 1991. [DOI: 10.1016/s0021-9258(17)35258-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
|