1
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Silva-Filho AGS, Mombert A, Nascimento CC, Nóbrega BB, Soares DMM, Martins AGS, Domingos AHR, Santos I, Della-Torre OHP, Perry BA, Desjardin DE, Stevani CV, Menolli N. Correction: Silva-Filho et al. Eoscyphella luciurceolata gen. and sp. nov. (Agaricomycetes) Shed Light on Cyphellopsidaceae with a New Lineage of Bioluminescent Fungi. J. Fungi 2023, 9, 1004. J Fungi (Basel) 2023; 9:1189. [PMID: 38132806 PMCID: PMC10745026 DOI: 10.3390/jof9121189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 11/28/2023] [Indexed: 12/23/2023] Open
Abstract
In the original publication [...].
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Affiliation(s)
- Alexandre G. S. Silva-Filho
- IFungiLab, Departamento de Ciências da Natureza e Matemática (DCM), Subárea de Biologia (SAB), Instituto Federal de Educação, Ciência e Tecnologia de São Paulo (IFSP), Campus São Paulo (SPO), São Paulo 01109-010, SP, Brazil; (A.G.S.S.-F.); (C.C.N.)
| | | | - Cristiano C. Nascimento
- IFungiLab, Departamento de Ciências da Natureza e Matemática (DCM), Subárea de Biologia (SAB), Instituto Federal de Educação, Ciência e Tecnologia de São Paulo (IFSP), Campus São Paulo (SPO), São Paulo 01109-010, SP, Brazil; (A.G.S.S.-F.); (C.C.N.)
| | - Bianca B. Nóbrega
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo 05508-000, SP, Brazil;
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo 05508-000, SP, Brazil;
| | - Douglas M. M. Soares
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo 05508-000, SP, Brazil;
| | - Ana G. S. Martins
- Instituto de Pesquisa da Biodiversidade (IPBio), Iporanga 18330-000, SP, Brazil; (A.G.S.M.); (A.H.R.D.); (I.S.); (O.H.P.D.-T.)
| | - Adão H. R. Domingos
- Instituto de Pesquisa da Biodiversidade (IPBio), Iporanga 18330-000, SP, Brazil; (A.G.S.M.); (A.H.R.D.); (I.S.); (O.H.P.D.-T.)
| | - Isaias Santos
- Instituto de Pesquisa da Biodiversidade (IPBio), Iporanga 18330-000, SP, Brazil; (A.G.S.M.); (A.H.R.D.); (I.S.); (O.H.P.D.-T.)
| | - Olavo H. P. Della-Torre
- Instituto de Pesquisa da Biodiversidade (IPBio), Iporanga 18330-000, SP, Brazil; (A.G.S.M.); (A.H.R.D.); (I.S.); (O.H.P.D.-T.)
| | - Brian A. Perry
- Department of Biological Sciences, California State University, East Bay, Hayward, CA 94542, USA;
| | - Dennis E. Desjardin
- Department of Biology, San Francisco State University, San Francisco, CA 94132, USA;
| | - Cassius V. Stevani
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo 05508-000, SP, Brazil;
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo 05508-000, SP, Brazil;
| | - Nelson Menolli
- IFungiLab, Departamento de Ciências da Natureza e Matemática (DCM), Subárea de Biologia (SAB), Instituto Federal de Educação, Ciência e Tecnologia de São Paulo (IFSP), Campus São Paulo (SPO), São Paulo 01109-010, SP, Brazil; (A.G.S.S.-F.); (C.C.N.)
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2
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Silva-Filho AGS, Mombert A, Nascimento CC, Nóbrega BB, Soares DMM, Martins AGS, Domingos AHR, Santos I, Della-Torre OHP, Perry BA, Desjardin DE, Stevani CV, Menolli N. Eoscyphella luciurceolata gen. and sp. nov. (Agaricomycetes) Shed Light on Cyphellopsidaceae with a New Lineage of Bioluminescent Fungi. J Fungi (Basel) 2023; 9:1004. [PMID: 37888262 PMCID: PMC10608165 DOI: 10.3390/jof9101004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/22/2023] [Accepted: 10/06/2023] [Indexed: 10/28/2023] Open
Abstract
During nocturnal field expeditions in the Brazilian Atlantic Rainforest, an unexpected bioluminescent fungus with reduced form was found. Based on morphological data, the taxon was first identified as belonging to the cyphelloid genus Maireina, but in our phylogenetic analyses, Maireina was recovered and confirmed as a paraphyletic group related to genera Merismodes and Cyphellopsis. Maireina filipendula, Ma. monacha, and Ma. subsphaerospora are herein transferred to Merismodes. Based upon morphological and molecular characters, the bioluminescent cyphelloid taxon is described as the new genus Eoscyphella, characterized by a vasiform to urceolate basidiomata, subglobose to broadly ellipsoid basidiospores, being pigmented, weakly to densely encrusted external hyphae, regularly bi-spored basidia, unclamped hyphae, and an absence of both conspicuous long external hairs and hymenial cystidia. Phylogenetic analyses based on ITS rDNA and LSU rDNA support the proposal of the new genus and confirm its position in Cyphellopsidaceae. Eoscyphella luciurceolata represents a new lineage of bioluminescent basidiomycetes with reduced forms.
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Affiliation(s)
- Alexandre G. S. Silva-Filho
- IFungiLab, Departamento de Ciências da Natureza e Matemática (DCM), Subárea de Biologia (SAB), Instituto Federal de Educação, Ciência e Tecnologia de São Paulo (IFSP), Campus São Paulo (SPO), São Paulo 01109-010, SP, Brazil; (A.G.S.S.-F.); (C.C.N.)
| | | | - Cristiano C. Nascimento
- IFungiLab, Departamento de Ciências da Natureza e Matemática (DCM), Subárea de Biologia (SAB), Instituto Federal de Educação, Ciência e Tecnologia de São Paulo (IFSP), Campus São Paulo (SPO), São Paulo 01109-010, SP, Brazil; (A.G.S.S.-F.); (C.C.N.)
| | - Bianca B. Nóbrega
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo 05508-000, SP, Brazil;
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo 05508-000, SP, Brazil;
| | - Douglas M. M. Soares
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo 05508-000, SP, Brazil;
| | - Ana G. S. Martins
- Instituto de Pesquisa da Biodiversidade (IPBio), Iporanga 18330-000, SP, Brazil; (A.G.S.M.); (A.H.R.D.); (I.S.); (O.H.P.D.-T.)
| | - Adão H. R. Domingos
- Instituto de Pesquisa da Biodiversidade (IPBio), Iporanga 18330-000, SP, Brazil; (A.G.S.M.); (A.H.R.D.); (I.S.); (O.H.P.D.-T.)
| | - Isaias Santos
- Instituto de Pesquisa da Biodiversidade (IPBio), Iporanga 18330-000, SP, Brazil; (A.G.S.M.); (A.H.R.D.); (I.S.); (O.H.P.D.-T.)
| | - Olavo H. P. Della-Torre
- Instituto de Pesquisa da Biodiversidade (IPBio), Iporanga 18330-000, SP, Brazil; (A.G.S.M.); (A.H.R.D.); (I.S.); (O.H.P.D.-T.)
| | - Brian A. Perry
- Department of Biological Sciences, California State University, East Bay, Hayward, CA 94542, USA;
| | - Dennis E. Desjardin
- Department of Biology, San Francisco State University, San Francisco, CA 94132, USA;
| | - Cassius V. Stevani
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo 05508-000, SP, Brazil;
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo 05508-000, SP, Brazil;
| | - Nelson Menolli
- IFungiLab, Departamento de Ciências da Natureza e Matemática (DCM), Subárea de Biologia (SAB), Instituto Federal de Educação, Ciência e Tecnologia de São Paulo (IFSP), Campus São Paulo (SPO), São Paulo 01109-010, SP, Brazil; (A.G.S.S.-F.); (C.C.N.)
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3
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Ramos LD, Gomes TMV, Stevani CV, Bechara EJH. Mining reactive triplet carbonyls in biological systems. J Photochem Photobiol B 2023; 243:112712. [PMID: 37116363 DOI: 10.1016/j.jphotobiol.2023.112712] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 04/03/2023] [Accepted: 04/09/2023] [Indexed: 04/30/2023]
Abstract
Aliphatic triplet carbonyls can be treated as short-lived radicals, since both species share similar reactions such as hydrogen atom abstraction, cyclization, addition, and isomerization. Importantly, enzyme-generated triplet carbonyls excite triplet molecular oxygen to the highly reactive, electrophilic singlet state by resonance energy transfer, which can react with proteins, lipids, and DNA. Carbonyl triplets, singlet oxygen, and radicals are endowed with the potential to trigger both normal and pathological responses. In this paper, we present a short review of easy, fast, and inexpensive preliminary tests for the detection of transient triplet carbonyls in chemical and biological systems. This paper covers direct and indirect methods to look for triplet carbonyls based on their spectral distribution of chemiluminescence, photoproduct analysis, quenching of light emission by conjugated dienes, and enhancement of light emission by the sensitizer 9,10-dibromoanthracence-2-sulfonate ion (DBAS).
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Affiliation(s)
- Luiz D Ramos
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil; Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, SP, Brazil
| | - Thiago M V Gomes
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil; Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Cassius V Stevani
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil.
| | - Etelvino J H Bechara
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil; Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil.
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4
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Ramos LD, Gomes TMV, Quintiliano SAP, Premi S, Stevani CV, Bechara EJH. Biological Schiff bases may generate reactive triplet carbonyls and singlet oxygen: A model study. Free Radic Biol Med 2022; 191:97-104. [PMID: 36049617 DOI: 10.1016/j.freeradbiomed.2022.08.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/22/2022] [Accepted: 08/23/2022] [Indexed: 11/24/2022]
Affiliation(s)
- Luiz D Ramos
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Brazil; Centro Universitário Anhanguera - UniA, Brazil
| | - Thiago M V Gomes
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Brazil; Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Brazil
| | - Samir A P Quintiliano
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Brazil
| | - Sanjay Premi
- Moffitt Cancer Center, Department of Tumor Biology, Tampa, FL, USA
| | - Cassius V Stevani
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Brazil; Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Brazil
| | - Etelvino J H Bechara
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Brazil; Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Brazil.
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5
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Iossi MR, Palú IA, Soares DM, Vieira WG, Alves LS, Stevani CV, Caitano CEC, Atum SVF, Freire RS, Dias ES, Zied DC. Metaprofiling of the Bacterial Community in Colonized Compost Extracts by Agaricus subrufescens. J Fungi (Basel) 2022; 8:jof8100995. [PMID: 36294560 PMCID: PMC9605601 DOI: 10.3390/jof8100995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 09/15/2022] [Accepted: 09/19/2022] [Indexed: 11/16/2022] Open
Abstract
It is well-known that bacteria and fungi play important roles in the relationships between mycelium growth and the formation of fruiting bodies. The sun mushroom, Agaricus subrufescens, was discovered in Brazil ca. 1960 and it has become known worldwide due to its medicinal and nutritional properties. This work evaluated the bacterial community present in mushroom-colonized compost extract (MCCE) prepared from cultivation of A. subrufescens, its dynamics with two different soaking times and the influence of the application of those extracts on the casing layer of a new compost block for A. subrufescens cultivation. MCCEs were prepared through initial submersion of the colonized compost for 1 h or 24 h in water followed by application on casing under semi-controlled conditions. Full-length 16S rRNA genes of 1 h and 24 h soaked MCCE were amplified and sequenced using nanopore technology. Proteobacteria, followed by Firmicutes and Planctomycetes, were found to be the most abundant phyla in both the 1 h and 24 h soaked MCCE. A total of 275 different bacterial species were classified from 1 h soaked MCCE samples and 166 species from 24 h soaked MCCE, indicating a decrease in the bacterial diversity with longer soaking time during the preparation of MCCE. The application of 24 h soaked MCCE provided increases of 25% in biological efficiency, 16% in precociousness, 53% in the number of mushrooms and 40% in mushroom weight compared to control. Further investigation is required to determine strategies to enhance the yield and quality of the agronomic traits in commercial mushroom cultivation.
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Affiliation(s)
- Matheus Rodrigo Iossi
- Programa de Pós-Graduação em Microbiologia Agropecuária, Faculdade de Ciências Agrárias e Veterinárias (FCAV), Universidade Estadual Paulista (UNESP), São Paulo 14884-900, Brazil
| | - Isabela Arruda Palú
- Faculdade de Ciências Agrárias e Tecnológicas (FCAT), Universidade Estadual Paulista (UNESP), São Paulo 17900-000, Brazil
| | - Douglas Moraes Soares
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo (USP), São Paulo 05508-220, Brazil
| | - Wagner G. Vieira
- Programa de Pós-Graduação em Microbiologia Agropecuária, Faculdade de Ciências Agrárias e Veterinárias (FCAV), Universidade Estadual Paulista (UNESP), São Paulo 14884-900, Brazil
| | - Lucas Silva Alves
- Programa de Pós-Graduação em Microbiologia Agropecuária, Faculdade de Ciências Agrárias e Veterinárias (FCAV), Universidade Estadual Paulista (UNESP), São Paulo 14884-900, Brazil
| | - Cassius V. Stevani
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo (USP), São Paulo 05508-220, Brazil
| | - Cinthia E. C. Caitano
- Programa de Pós-Graduação em Microbiologia Agropecuária, Faculdade de Ciências Agrárias e Veterinárias (FCAV), Universidade Estadual Paulista (UNESP), São Paulo 14884-900, Brazil
| | - Samir V. F. Atum
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo (USP), São Paulo 05508-220, Brazil
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo 05508-220, Brazil
| | - Renato S. Freire
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo (USP), São Paulo 05508-220, Brazil
| | - Eustáquio S. Dias
- Departamento de Biologia, Universidade Federal de Lavras (UFLA), Lavras 37200-900, Brazil
| | - Diego Cunha Zied
- Faculdade de Ciências Agrárias e Tecnológicas (FCAT), Universidade Estadual Paulista (UNESP), São Paulo 17900-000, Brazil
- Correspondence: or
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Soares DMM, Procópio DP, Zamuner CK, Nóbrega BB, Bettim MR, de Rezende G, Lopes PM, Pereira ABD, Bechara EJH, Oliveira AG, Freire RS, Stevani CV. Fungal bioassays for environmental monitoring. Front Bioeng Biotechnol 2022; 10:954579. [PMID: 36091455 PMCID: PMC9452622 DOI: 10.3389/fbioe.2022.954579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 08/02/2022] [Indexed: 11/13/2022] Open
Abstract
Environmental pollutants are today a major concern and an intensely discussed topic on the global agenda for sustainable development. They include a wide range of organic compounds, such as pharmaceutical waste, pesticides, plastics, and volatile organic compounds that can be found in air, soil, water bodies, sewage, and industrial wastewater. In addition to impacting fauna, flora, and fungi, skin absorption, inhalation, and ingestion of some pollutants can also negatively affect human health. Fungi play a crucial role in the decomposition and cycle of natural and synthetic substances. They exhibit a variety of growth, metabolic, morphological, and reproductive strategies and can be found in association with animals, plants, algae, and cyanobacteria. There are fungal strains that occur naturally in soil, sediment, and water that have inherent abilities to survive with contaminants, making the organism important for bioassay applications. In this context, we reviewed the applications of fungal-based bioassays as a versatile tool for environmental monitoring.
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Affiliation(s)
- Douglas M. M. Soares
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Dielle P. Procópio
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
- Research Centre for Greenhouse Gas Innovation (RGCI-POLI-USP), University of São Paulo, São Paulo, Brazil
| | - Caio K. Zamuner
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Bianca B. Nóbrega
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Monalisa R. Bettim
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Gustavo de Rezende
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Pedro M. Lopes
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Arthur B. D. Pereira
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Etelvino J. H. Bechara
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Anderson G. Oliveira
- Department of Chemistry and Biochemistry, Yeshiva University, New York, NY, United States
| | - Renato S. Freire
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
- Research Centre for Greenhouse Gas Innovation (RGCI-POLI-USP), University of São Paulo, São Paulo, Brazil
| | - Cassius V. Stevani
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
- Research Centre for Greenhouse Gas Innovation (RGCI-POLI-USP), University of São Paulo, São Paulo, Brazil
- *Correspondence: Cassius V. Stevani,
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7
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Soares DM, Gonçalves LP, Machado CO, Esteves LC, Stevani CV, Oliveira CC, Dörr FA, Pinto E, Adachi FM, Hotta CT, Bastos EL. Reannotation of Fly Amanita l-DOPA Dioxygenase Gene Enables Its Cloning and Heterologous Expression. ACS Omega 2022; 7:16070-16079. [PMID: 35571802 PMCID: PMC9097196 DOI: 10.1021/acsomega.2c01365] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 04/11/2022] [Indexed: 06/15/2023]
Abstract
The l-DOPA dioxygenase of Amanita muscaria (AmDODA) participates in the biosynthesis of betalain- and hygroaurin-type natural pigments. AmDODA is encoded by the dodA gene, whose DNA sequence was inferred from cDNA and gDNA libraries almost 30 years ago. However, reports on its heterologous expression rely on either the original 5'-truncated cDNA plasmid or artificial gene synthesis. We provide unequivocal evidence that the heterologous expression of AmDODA from A. muscaria specimens is not possible by using the coding sequence previously inferred for dodA. Here, we rectify and reannotate the full-length coding sequence for AmDODA and express a 205-aa His-tagged active enzyme, which was used to produce the l-DOPA hygroaurin, a rare fungal pigment. Moreover, AmDODA and other isozymes from bacteria were submitted to de novo folding using deep learning algorithms, and their putative active sites were inferred and compared. The wide catalytic pocket of AmDODA and the presence of the His-His-His and His-His-Asp motifs can provide insight into the dual cleavage of l-DOPA at positions 2,3 and 4,5 as per the mechanism proposed for nonheme dioxygenases.
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Affiliation(s)
- Douglas
M. M. Soares
- Departamento
de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05508-000 São
Paulo, São Paulo Brazil
- Departamento
de Bioquímica, Instituto de Química, Universidade de São Paulo, 05508-000 São Paulo, São Paulo Brazil
| | - Letícia
C. P. Gonçalves
- Departamento
de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05508-000 São
Paulo, São Paulo Brazil
| | - Caroline O. Machado
- Departamento
de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05508-000 São
Paulo, São Paulo Brazil
| | - Larissa C. Esteves
- Departamento
de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05508-000 São
Paulo, São Paulo Brazil
| | - Cassius V. Stevani
- Departamento
de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05508-000 São
Paulo, São Paulo Brazil
| | - Carla C. Oliveira
- Departamento
de Bioquímica, Instituto de Química, Universidade de São Paulo, 05508-000 São Paulo, São Paulo Brazil
| | - Felipe A. Dörr
- Departamento
de Análises Clínicas e Toxicológicas, Faculdade
de Ciências Farmacêuticas, Universidade de São Paulo, 05508-000 São Paulo, São Paulo Brazil
| | - Ernani Pinto
- Departamento
de Análises Clínicas e Toxicológicas, Faculdade
de Ciências Farmacêuticas, Universidade de São Paulo, 05508-000 São Paulo, São Paulo Brazil
- Centro
de Energia Nuclear na Agricultura, Universidade
de São Paulo, 13400-970 Piracicaba, São Paulo Brazil
| | - Flávia M.
M. Adachi
- Departamento
de Bioquímica, Instituto de Química, Universidade de São Paulo, 05508-000 São Paulo, São Paulo Brazil
| | - Carlos T. Hotta
- Departamento
de Bioquímica, Instituto de Química, Universidade de São Paulo, 05508-000 São Paulo, São Paulo Brazil
| | - Erick L. Bastos
- Departamento
de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05508-000 São
Paulo, São Paulo Brazil
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8
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Nóbrega BB, Soares DMM, Zamuner CK, Stevani CV. Optimized methodology for obtention of high-yield and -quality RNA from the mycelium of the bioluminescent fungus Neonothopanus gardneri. J Microbiol Methods 2021; 191:106348. [PMID: 34699864 DOI: 10.1016/j.mimet.2021.106348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 10/18/2021] [Accepted: 10/18/2021] [Indexed: 10/20/2022]
Abstract
Neonothopanus gardneri, also known as coconut flower mushroom (flor-de-coco), is a Brazilian bioluminescent basidiomycete found in Palm Forest, a transitional biome between the Amazonian Forest and Caatinga (Savanna-like vegetation) in Northeast Brazil, especially in Piauí State. Recent advances toward the elucidation of fungal bioluminescence have contributed to the discovery of four genes (hisps, h3h, luz and cph) involved with the bioluminescence process, the so-called Caffeic Acid Cycle (CAC) and to develop biotechnological applications such autoluminescent tobacco plants and luciferase-based reporter genes. High-yield and -quality RNA-extraction methods are required for most of these purposes. Herein, four methods for RNA isolation from the mycelium of N. gardneri were evaluated: RNeasy® kit (QIAGEN), TRI+, TRI18G+, and TRI26G+. Highest RNA yield was observed for TRI18G+ and TRI26G+ methods, an increase of ~130% in comparison to the RNeasy® method and of ~40% to the TRI+ protocol. All the RNA samples showed good purity and integrity, except by gDNA contamination in RNA samples produced with the RNeasy® method. High quality of RNA samples was confirmed by successful cDNA synthesis and PCR amplification of the coding sequence of h3h gene, responsible for the hydroxylation of the precursor of fungal luciferin (3-hydroxyhispidin). Similarly, RT-qPCR amplification of ef-tu gene, related to the protein biosynthesis in the cell, was demonstrated from RNA samples. This is the first report of a reproducible, time-saving and low-cost optimized method for isolation of high-quality and -yield, DNA-free RNA from a bioluminescent fungus, but that can also be useful for other basidiomycetes.
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Affiliation(s)
- Bianca B Nóbrega
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil; Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Douglas M M Soares
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil.
| | - Caio K Zamuner
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Cassius V Stevani
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil.
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9
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Demasi M, Augusto O, Bechara EJH, Bicev RN, Cerqueira FM, da Cunha FM, Denicola A, Gomes F, Miyamoto S, Netto LES, Randall LM, Stevani CV, Thomson L. Oxidative Modification of Proteins: From Damage to Catalysis, Signaling, and Beyond. Antioxid Redox Signal 2021; 35:1016-1080. [PMID: 33726509 DOI: 10.1089/ars.2020.8176] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Significance: The systematic investigation of oxidative modification of proteins by reactive oxygen species started in 1980. Later, it was shown that reactive nitrogen species could also modify proteins. Some protein oxidative modifications promote loss of protein function, cleavage or aggregation, and some result in proteo-toxicity and cellular homeostasis disruption. Recent Advances: Previously, protein oxidation was associated exclusively to damage. However, not all oxidative modifications are necessarily associated with damage, as with Met and Cys protein residue oxidation. In these cases, redox state changes can alter protein structure, catalytic function, and signaling processes in response to metabolic and/or environmental alterations. This review aims to integrate the present knowledge on redox modifications of proteins with their fate and role in redox signaling and human pathological conditions. Critical Issues: It is hypothesized that protein oxidation participates in the development and progression of many pathological conditions. However, no quantitative data have been correlated with specific oxidized proteins or the progression or severity of pathological conditions. Hence, the comprehension of the mechanisms underlying these modifications, their importance in human pathologies, and the fate of the modified proteins is of clinical relevance. Future Directions: We discuss new tools to cope with protein oxidation and suggest new approaches for integrating knowledge about protein oxidation and redox processes with human pathophysiological conditions. Antioxid. Redox Signal. 35, 1016-1080.
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Affiliation(s)
- Marilene Demasi
- Laboratório de Bioquímica e Biofísica, Instituto Butantan, São Paulo, Brazil
| | - Ohara Augusto
- Departamento de Bioquímica and Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Etelvino J H Bechara
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Renata N Bicev
- Departamento de Bioquímica, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Fernanda M Cerqueira
- CENTD, Centre of Excellence in New Target Discovery, Instituto Butantan, São Paulo, Brazil
| | - Fernanda M da Cunha
- Departamento de Bioquímica, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Ana Denicola
- Laboratorios Fisicoquímica Biológica-Enzimología, Facultad de Ciencias, Instituto de Química Biológica, Universidad de la República, Montevideo, Uruguay
| | - Fernando Gomes
- Departamento de Genética e Biologia Evolutiva, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil
| | - Sayuri Miyamoto
- Departamento de Bioquímica and Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Luis E S Netto
- Departamento de Genética e Biologia Evolutiva, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil
| | - Lía M Randall
- Laboratorios Fisicoquímica Biológica-Enzimología, Facultad de Ciencias, Instituto de Química Biológica, Universidad de la República, Montevideo, Uruguay
| | - Cassius V Stevani
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Leonor Thomson
- Laboratorios Fisicoquímica Biológica-Enzimología, Facultad de Ciencias, Instituto de Química Biológica, Universidad de la República, Montevideo, Uruguay
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10
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11
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Ramos LD, Mantovani MC, Sartori A, Dutra F, Stevani CV, Bechara EJH. Aerobic co-oxidation of hemoglobin and aminoacetone, a putative source of methylglyoxal. Free Radic Biol Med 2021; 166:178-186. [PMID: 33636334 DOI: 10.1016/j.freeradbiomed.2021.02.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 02/10/2021] [Accepted: 02/13/2021] [Indexed: 10/22/2022]
Abstract
Aminoacetone (1-aminopropan-2-one), a putative minor biological source of methylglyoxal, reacts like other α-aminoketones such as 6-aminolevulinic acid (first heme precursor) and 1,4-diaminobutanone (a microbicide) yielding electrophilic α-oxoaldehydes, ammonium ion and reactive oxygen species by metal- and hemeprotein-catalyzed aerobic oxidation. A plethora of recent reports implicates triose phosphate-generated methylglyoxal in protein crosslinking and DNA addition, leading to age-related disorders, including diabetes. Importantly, methylglyoxal-treated hemoglobin adds four water-exposed arginine residues, which may compromise its physiological role and potentially serve as biomarkers for diabetes. This paper reports on the co-oxidation of aminoacetone and oxyhemoglobin in normally aerated phosphate buffer, leading to structural changes in hemoglobin, which can be attributed to the addition of aminoacetone-produced methylglyoxal to the protein. Hydroxyl radical-promoted chemical damage to hemoglobin may also occur in parallel, which is suggested by EPR-spin trapping studies with 5,5-dimethyl-1-pyrroline-N-oxide and ethanol. Concomitantly, oxyhemoglobin is oxidized to methemoglobin, as indicated by characteristic CD spectral changes in the Soret and visible regions. Overall, these findings may contribute to elucidate the molecular mechanisms underlying human diseases associated with hemoglobin dysfunctions and with aminoacetone in metabolic alterations related to excess glycine and threonine.
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Affiliation(s)
- Luiz D Ramos
- Departamento de Química Fundamental, Universidade de São Paulo, São Paulo, SP, Brazil; Centro Universitário Anhanguera, UniA, Santo André, SP, Brazil
| | - Mariana C Mantovani
- Departamento de Química Fundamental, Universidade de São Paulo, São Paulo, SP, Brazil; Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Universidade Federal de São Paulo, Diadema, SP, Brazil; Instituto de Pesquisas Energéticas e Nucleares, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Adriano Sartori
- Centro de Ciências Exatas e Tecnologia, Universidade Cruzeiro Do Sul, São Paulo, SP, Brazil
| | - Fernando Dutra
- Centro de Ciências Exatas e Tecnologia, Universidade Cruzeiro Do Sul, São Paulo, SP, Brazil
| | - Cassius V Stevani
- Departamento de Química Fundamental, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Etelvino J H Bechara
- Departamento de Química Fundamental, Universidade de São Paulo, São Paulo, SP, Brazil; Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Universidade Federal de São Paulo, Diadema, SP, Brazil.
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12
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Ramos LD, Prado FM, Stevani CV, Di Mascio P, Bechara EJH. l-Tryptophan Interactions with the Horseradish Peroxidase-Catalyzed Generation of Triplet Acetone. Photochem Photobiol 2021; 97:327-334. [PMID: 33296511 DOI: 10.1111/php.13363] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 12/02/2020] [Indexed: 01/01/2023]
Abstract
Triplet carbonyls generated by chemiexcitation are involved in typical photobiochemical processes in the absence of light. Due to their biradical nature, ultraweak light emission and long lifetime, electronically excited triplet species display typical radical reactions such as isomerization, fragmentation, cycloaddition and hydrogen abstraction. In this paper, we report chemical reactions in a set of amino acid residues induced by the isobutanal/horseradish peroxidase (IBAL/HRP) system, a well-known source of excited triplet acetone (Ac3* ). Accordingly, quenching of Ac3* by tryptophan (Trp) unveiled parallel enzyme damage and inactivation, likely explained by scavenging of IBAL tertiary radical reaction intermediate and Ac3* -derived 2-hydroxy-i-propyl radical. Quenching constants were calculated from Stern-Volmer plots, and the structure of radical adducts was revealed by mass spectrometry. As expected, a concurrent Schiff-type adduct was found to be one of the reaction by-products. These findings draw attention to potential structural and functional changes in enzymes involved in the electronic chemiexcitation of their products.
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Affiliation(s)
- Luiz D Ramos
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Fernanda M Prado
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Cassius V Stevani
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Paolo Di Mascio
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Etelvino J H Bechara
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
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13
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Ventura FF, Mendes LF, Oliveira AG, Bazito RC, Bechara EJH, Freire RS, Stevani CV. Evaluation of Phenolic Compound Toxicity Using a Bioluminescent Assay with the Fungus Gerronema viridilucens. Environ Toxicol Chem 2020; 39:1558-1565. [PMID: 32367555 DOI: 10.1002/etc.4740] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 03/18/2020] [Accepted: 04/30/2020] [Indexed: 06/11/2023]
Abstract
Basidiomycetes (phylum Basidiomycota) are filamentous fungi characterized by the exogenous formation of spores on a club-shaped cell called a basidium that are often formed on complex fruiting bodies (mushrooms). Many basidiomycetes serve an important role in recycling lignocellulosic material to higher trophic levels, and some show symbiotic relationships with plants. All known bioluminescent fungi are mushroom-forming basidiomycetes in the order Agaricales. Hence, the disruption of the basidiomycete community can entirely compromise the carbon cycle in nature from fungi to higher trophic levels. The fungus Gerronema viridilucens was used in the present study to investigate the toxicity of a phenolic compound series based on the inhibition of its bioluminescence. The median effect concentration (EC50) obtained from curves of bioluminescence inhibition versus log [phenolic compound] showed that 2,4,6-trichlorophenol was the most toxic compound in the series. The log EC50 values of all phenolic compounds were then used for the prediction of their toxicity. The univariate correlation of log EC50 values obtained from 6 different phenolic compounds was stronger with the dissociation constant (pKa ) than with 1-octanol/water partition coefficient (KOW ). Nevertheless, the toxicity can be better predicted by using both parameters, suggesting that the phenol-driven uncoupling of fungus mitochondrial adenosine triphosphate synthesis is the origin of phenolic compound toxicity to the test fungus. Environ Toxicol Chem 2020;39:1558-1565. © 2020 SETAC.
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Affiliation(s)
- Fernanda F Ventura
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, São Paulo, Brazil
- Fundação Jorge Duprat Figueiredo de Segurança e Medicina do Trabalho, São Paulo, São Paulo, Brazil
| | - Luiz F Mendes
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, São Paulo, Brazil
- Bioativos Group, Santana do Parnaíba, São Paulo, Brazil
| | - Anderson G Oliveira
- Departamento de Oceanografia Física, Química e Geológica, Instituto Oceanográfico, Universidade de São Paulo, São Paulo, São Paulo, Brazil
| | - Reinaldo C Bazito
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, São Paulo, Brazil
| | - Etelvino J H Bechara
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, São Paulo, Brazil
| | - Renato S Freire
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, São Paulo, Brazil
| | - Cassius V Stevani
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, São Paulo, Brazil
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14
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Falaschi RL, Amaral DT, Santos I, Domingos AHR, Johnson GA, Martins AGS, Viroomal IB, Pompéia SL, Mirza JD, Oliveira AG, Bechara EJH, Viviani VR, Stevani CV. Neoceroplatus betaryiensis nov. sp. (Diptera: Keroplatidae) is the first record of a bioluminescent fungus-gnat in South America. Sci Rep 2019; 9:11291. [PMID: 31383897 PMCID: PMC6683459 DOI: 10.1038/s41598-019-47753-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 07/18/2019] [Indexed: 02/06/2023] Open
Abstract
Blue shining fungus gnats (Diptera) had been long reported in the Waitomo caves of New Zealand (Arachnocampa luminosa Skuse), in stream banks of the American Appalachian Mountains (Orfelia fultoni Fisher) in 1939 and in true spore eating Eurasiatic Keroplatus Bosc species. This current report observes that similar blue light emitting gnat larvae also occur nearby the Betary river in the buffer zone of High Ribeira River State Park (PETAR) in the Atlantic Forest of Brazil, where the larvae were found when on fallen branches or trunks enveloped in their own secreted silk. The new species is named Neoceroplatus betaryiensis nov. sp. (Diptera: Keroplatidae: Keroplatinae: Keroplatini) based on a morphological analysis. Neoceroplatus betaryiensis nov. sp. larvae emit blue bioluminescence that can be seen from their last abdominal segment and from two photophores located laterally on the first thoracic segment. When touched, the larvae can actively stop its luminescence, which returns when it is no longer being agitated. The in vitro bioluminescence spectrum of N. betaryiensis nov. sp. peaks at 472 nm, and cross-reactivity of hot and cold extracts with the luciferin-luciferase from Orfelia fultoni indicate significant similarity in both enzyme and substrate of the two species, and that the bioluminescence system in the subfamily Keroplatinae is conserved.
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Affiliation(s)
- Rafaela L Falaschi
- Departamento de Biologia Estrutural, Molecular e Genética, Programa de Pós-Graduação em Biologia Evolutiva, Universidade Estadual de Ponta Grossa, Ponta Grossa, PR, Brazil
| | - Danilo T Amaral
- Depto Física, Química e Matemática, Graduate School of Biotechnology and Environmental Monitoring (UFSCar), Sorocaba, SP, Brazil
| | - Isaias Santos
- IPBio - Instituto de Pesquisas da Biodiversidade, Iporanga, SP, Brazil
| | - Adão H R Domingos
- IPBio - Instituto de Pesquisas da Biodiversidade, Iporanga, SP, Brazil
| | - Grant A Johnson
- IPBio - Instituto de Pesquisas da Biodiversidade, Iporanga, SP, Brazil
| | - Ana G S Martins
- IPBio - Instituto de Pesquisas da Biodiversidade, Iporanga, SP, Brazil
| | - Imran B Viroomal
- IPBio - Instituto de Pesquisas da Biodiversidade, Iporanga, SP, Brazil
| | - Sérgio L Pompéia
- IPBio - Instituto de Pesquisas da Biodiversidade, Iporanga, SP, Brazil
| | - Jeremy D Mirza
- Departamento de Química, Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Universidade Federal de São Paulo, Diadema, SP, Brazil.,Departamento de Oceanografia Física, Química e Geológica, Instituto Oceanográfico, Universidade de São Paulo, São Paulo, Brazil
| | - Anderson G Oliveira
- Departamento de Oceanografia Física, Química e Geológica, Instituto Oceanográfico, Universidade de São Paulo, São Paulo, Brazil
| | - Etelvino J H Bechara
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil.
| | - Vadim R Viviani
- Depto Física, Química e Matemática, Graduate School of Biotechnology and Environmental Monitoring (UFSCar), Sorocaba, SP, Brazil.
| | - Cassius V Stevani
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil.
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Galeazzo GA, Mirza JD, Dorr FA, Pinto E, Stevani CV, Lohrmann KB, Oliveira AG. Characterizing the Bioluminescence of the Humboldt Squid,
Dosidicus gigas
(d'Orbigny, 1835): One of the Largest Luminescent Animals in the World. Photochem Photobiol 2019; 95:1179-1185. [DOI: 10.1111/php.13106] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 03/27/2019] [Indexed: 01/14/2023]
Affiliation(s)
- Gabriela A. Galeazzo
- Departamento de Oceanografia Física, Química e Geológica Instituto Oceanográfico Universidade de São Paulo São Paulo Brazil
| | - Jeremy D. Mirza
- Departamento de Oceanografia Física, Química e Geológica Instituto Oceanográfico Universidade de São Paulo São Paulo Brazil
- Departamento de Química Instituto de Ciências Ambientais, Químicas e Farmacêuticas Universidade Federal de São Paulo Diadema SP Brazil
| | - Felipe A. Dorr
- Departamento de Análises Clínicas e Toxicológicas Faculdade de Ciências Farmacêuticas Universidade de São Paulo São Paulo SP Brazil
| | - Ernani Pinto
- Departamento de Análises Clínicas e Toxicológicas Faculdade de Ciências Farmacêuticas Universidade de São Paulo São Paulo SP Brazil
| | - Cassius V. Stevani
- Departamento de Química Fundamental Instituto de Química Universidade de São Paulo São Paulo SP Brazil
| | - Karin B. Lohrmann
- Departamento de Biología Marina Facultad de Ciencias del Mar Centro Innovación Acuícola Aquapacífico Universidad Católica del Norte Coquimbo Chile
| | - Anderson G. Oliveira
- Departamento de Oceanografia Física, Química e Geológica Instituto Oceanográfico Universidade de São Paulo São Paulo Brazil
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Stevani CV, Baader WJ. Preparation and Characterisation of 2,2,2-Triphenyl-2λ5-1,3,2-Dioxastibolane-4,5-Dione as Standard For an Attempt to Trap 1,2-Dioxetanedione, A Possible High-Energy Intermediate in Peroxyoxalate Chemiluminescence. Journal of Chemical Research 2019. [DOI: 10.3184/030823402103172752] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The thermally stable triorganoantimony derivative, 2,2,2-triphenyl-2λ5-1,3,2-dioxastibolane-4,5-dione, has been prepared and characterised being then used as a reference in attempts to trap 1,2-dioxetanedione, one of the high-energy intermediates postulated in peroxyoxalate chemiluminescence, by an insertion reaction with triphenylantimony.
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Affiliation(s)
- Cassius V. Stevani
- Departamento de Química do Centro Universitário FIEO, Av. Franz Voegeli, 300, CEP 06020-190, Osasco-SP, Brazil
| | - Wilhelm J. Baader
- Instituto de Química da Universidade de São Paulo, C.P. 26077-05599/970, São Paulo-SP, Brazil
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17
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Abstract
A simple colorimetric immunoassay for quantification of human immunoglobulin G (hIgG) is herein described. The assay is based on the aggregation inhibition of silver nanoparticles (AgNP) functionalized with hIgG antibody (anti-hIgG) on the surface. The aggregation is measured in terms of attenuance values ratio at 400 and 530 nm (A400/A530). A linear response between A400/A530 and hIgG concentration is observed in the range 25 - 200 ng mL-1, and the detection limit is estimated as 11 ng mL-1 hIgG.
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Affiliation(s)
- Daniela M Batistela
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo (USP)
| | - Cassius V Stevani
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo (USP)
| | - Renato S Freire
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo (USP)
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18
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Kaskova ZM, Dörr FA, Petushkov VN, Purtov KV, Tsarkova AS, Rodionova NS, Mineev KS, Guglya EB, Kotlobay A, Baleeva NS, Baranov MS, Arseniev AS, Gitelson JI, Lukyanov S, Suzuki Y, Kanie S, Pinto E, Di Mascio P, Waldenmaier HE, Pereira TA, Carvalho RP, Oliveira AG, Oba Y, Bastos EL, Stevani CV, Yampolsky IV. Mechanism and color modulation of fungal bioluminescence. Sci Adv 2017; 3:e1602847. [PMID: 28508049 PMCID: PMC5406138 DOI: 10.1126/sciadv.1602847] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 03/01/2017] [Indexed: 05/16/2023]
Abstract
Bioluminescent fungi are spread throughout the globe, but details on their mechanism of light emission are still scarce. Usually, the process involves three key components: an oxidizable luciferin substrate, a luciferase enzyme, and a light emitter, typically oxidized luciferin, and called oxyluciferin. We report the structure of fungal oxyluciferin, investigate the mechanism of fungal bioluminescence, and describe the use of simple synthetic α-pyrones as luciferins to produce multicolor enzymatic chemiluminescence. A high-energy endoperoxide is proposed as an intermediate of the oxidation of the native luciferin to the oxyluciferin, which is a pyruvic acid adduct of caffeic acid. Luciferase promiscuity allows the use of simple α-pyrones as chemiluminescent substrates.
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Affiliation(s)
- Zinaida M. Kaskova
- Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya 16/10, Moscow 117997, Russia
- Pirogov Russian National Research Medical University, Ostrovitianov 1, Moscow 117997, Russia
- Institute of Biophysics Siberian Branch of Russian Academy of Sciences (SB RAS), Federal Research Center “Krasnoyarsk Science Center SB RAS,” Akademgorodok, Krasnoyarsk 660036, Russia
| | - Felipe A. Dörr
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, 05508-900, Brazil
| | - Valentin N. Petushkov
- Institute of Biophysics Siberian Branch of Russian Academy of Sciences (SB RAS), Federal Research Center “Krasnoyarsk Science Center SB RAS,” Akademgorodok, Krasnoyarsk 660036, Russia
| | - Konstantin V. Purtov
- Institute of Biophysics Siberian Branch of Russian Academy of Sciences (SB RAS), Federal Research Center “Krasnoyarsk Science Center SB RAS,” Akademgorodok, Krasnoyarsk 660036, Russia
| | - Aleksandra S. Tsarkova
- Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya 16/10, Moscow 117997, Russia
- Pirogov Russian National Research Medical University, Ostrovitianov 1, Moscow 117997, Russia
- Institute of Biophysics Siberian Branch of Russian Academy of Sciences (SB RAS), Federal Research Center “Krasnoyarsk Science Center SB RAS,” Akademgorodok, Krasnoyarsk 660036, Russia
| | - Natalja S. Rodionova
- Institute of Biophysics Siberian Branch of Russian Academy of Sciences (SB RAS), Federal Research Center “Krasnoyarsk Science Center SB RAS,” Akademgorodok, Krasnoyarsk 660036, Russia
| | - Konstantin S. Mineev
- Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya 16/10, Moscow 117997, Russia
| | - Elena B. Guglya
- Pirogov Russian National Research Medical University, Ostrovitianov 1, Moscow 117997, Russia
| | - Alexey Kotlobay
- Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya 16/10, Moscow 117997, Russia
- Institute of Biophysics Siberian Branch of Russian Academy of Sciences (SB RAS), Federal Research Center “Krasnoyarsk Science Center SB RAS,” Akademgorodok, Krasnoyarsk 660036, Russia
| | - Nadezhda S. Baleeva
- Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya 16/10, Moscow 117997, Russia
- Pirogov Russian National Research Medical University, Ostrovitianov 1, Moscow 117997, Russia
| | - Mikhail S. Baranov
- Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya 16/10, Moscow 117997, Russia
- Pirogov Russian National Research Medical University, Ostrovitianov 1, Moscow 117997, Russia
| | - Alexander S. Arseniev
- Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya 16/10, Moscow 117997, Russia
| | - Josef I. Gitelson
- Institute of Biophysics Siberian Branch of Russian Academy of Sciences (SB RAS), Federal Research Center “Krasnoyarsk Science Center SB RAS,” Akademgorodok, Krasnoyarsk 660036, Russia
| | - Sergey Lukyanov
- Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya 16/10, Moscow 117997, Russia
- Pirogov Russian National Research Medical University, Ostrovitianov 1, Moscow 117997, Russia
| | - Yoshiki Suzuki
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya 464-8601, Japan
| | - Shusei Kanie
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya 464-8601, Japan
| | - Ernani Pinto
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, 05508-900, Brazil
| | - Paolo Di Mascio
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, 05508-000, Brazil
| | - Hans E. Waldenmaier
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, 05508-000, Brazil
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, 05508-000, Brazil
| | - Tatiana A. Pereira
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, 05508-000, Brazil
| | - Rodrigo P. Carvalho
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, 05508-000, Brazil
| | - Anderson G. Oliveira
- Departamento de Oceanografia Física, Química e Geológica, Instituto Oceanográfico, Universidade de São Paulo, 05508-120, Brazil
| | - Yuichi Oba
- Department of Environmental Biology, Chubu University, Kasugai 487-8501, Japan
| | - Erick L. Bastos
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, 05508-000, Brazil
| | - Cassius V. Stevani
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, 05508-000, Brazil
| | - Ilia V. Yampolsky
- Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya 16/10, Moscow 117997, Russia
- Pirogov Russian National Research Medical University, Ostrovitianov 1, Moscow 117997, Russia
- Institute of Biophysics Siberian Branch of Russian Academy of Sciences (SB RAS), Federal Research Center “Krasnoyarsk Science Center SB RAS,” Akademgorodok, Krasnoyarsk 660036, Russia
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Oba Y, Stevani CV, Oliveira AG, Tsarkova AS, Chepurnykh TV, Yampolsky IV. Selected Least Studied but not Forgotten Bioluminescent Systems. Photochem Photobiol 2017; 93:405-415. [DOI: 10.1111/php.12704] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 11/15/2016] [Indexed: 02/06/2023]
Affiliation(s)
- Yuichi Oba
- Department of Environmental Biology; Chubu University; Kasugai Japan
| | - Cassius V. Stevani
- Departamento de Química Fundamental; Instituto de Química; Universidade de São Paulo; São Paulo Brazil
| | - Anderson G. Oliveira
- Departamento de Oceanografia Física; Química e Geológica; Instituto Oceanográfico; Universidade de São Paulo; São Paulo Brazil
| | - Aleksandra S. Tsarkova
- Institute of Bioorganic Chemistry; Russian Academy of Sciences; Moscow Russia
- Pirogov Russian National Research Medical University; Moscow Russia
| | - Tatiana V. Chepurnykh
- Institute of Bioorganic Chemistry; Russian Academy of Sciences; Moscow Russia
- Pirogov Russian National Research Medical University; Moscow Russia
| | - Ilia V. Yampolsky
- Institute of Bioorganic Chemistry; Russian Academy of Sciences; Moscow Russia
- Pirogov Russian National Research Medical University; Moscow Russia
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Capelari M, Desjardin DE, Perry BA, Asai T, Stevani CV. Neonothopanus gardneri: a new combination for a bioluminescent agaric from Brazil. Mycologia 2017; 103:1433-40. [DOI: 10.3852/11-097] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Marina Capelari
- Núcleo de Pesquisa em Micologia, Instituto de Botânica, Caixa Postal 3005, 01031-970 São Paulo, SP, Brazil
| | - Dennis E. Desjardin
- Department of Biology, San Francisco State University, San Francisco, California 94132
| | - Brian A. Perry
- Department of Biology, University of Hawaii at Hilo, Hilo, Hawaii 96720
| | - Tatiane Asai
- Núcleo de Pesquisa em Micologia, Instituto de Botânica, Caixa Postal 3005, 01031-970 São Paulo, SP, Brazil
| | - Cassius V. Stevani
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Caixa Postal 26077, 05599-970 São Paulo, SP, Brazil
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Affiliation(s)
| | - Brian A. Perry
- Department of Biology, San Francisco State University, 1600 Holloway Avenue, San Francisco, California 94132
| | - D. Jean Lodge
- USDA-Forest Service, Northern Research Station, P.O. Box 1377, Luquillo, Puerto Rico 00773-1377
| | - Cassius V. Stevani
- Instituto de Química da Universidade de São Paulo, Caixa Postal 26077, 05599-970, São Paulo, SP, Brazil
| | - Eiji Nagasawa
- Tottori Mycological Institute, 211, Kokoge, Tottori 689-1125, Japan
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Oba Y, Suzuki Y, Martins GNR, Carvalho RP, Pereira TA, Waldenmaier HE, Kanie S, Naito M, Oliveira AG, Dörr FA, Pinto E, Yampolsky IV, Stevani CV. Identification of hispidin as a bioluminescent active compound and its recycling biosynthesis in the luminous fungal fruiting body. Photochem Photobiol Sci 2017; 16:1435-1440. [DOI: 10.1039/c7pp00216e] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Luminous mushrooms glow continuously by recycling the fungal luciferin presursor, hispidin.
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Desjardin DE, Perry BA, Stevani CV. New luminescent mycenoid fungi (Basidiomycota, Agaricales) from São Paulo State, Brazil. Mycologia 2016; 108:1165-1174. [PMID: 27621286 DOI: 10.3852/16-077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Four species of mycenoid fungi are reported as luminescent (or putatively luminescent) on the basis of specimens collected from São Paulo State, Brazil. Two of them represent new species (Mycena oculisnymphae, Resinomycena petarensis), and two represent new reports of luminescence in previously described species (M. deformis, M. globulispora). Comprehensive descriptions, illustrations, photographs, and comparisons with phenetically similar species are provided. Sequences of nuc rDNA internal transcribed spacer regions were generated for barcoding purposes and for comparisons with similar species.
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Affiliation(s)
- Dennis E Desjardin
- a Department of Biology, San Francisco State University, 1600 Holloway Ave., San Francisco, California 94132
| | - Brian A Perry
- b Department of Biological Sciences, California State University - East Bay, 25800 Carlos Bee Blvd., Hayward, California 94542
| | - Cassius V Stevani
- c Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, São Paulo, SP 05508-000 Brazil
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Oliveira AG, Stevani CV, Waldenmaier HE, Viviani V, Emerson JM, Loros JJ, Dunlap JC. Circadian control sheds light on fungal bioluminescence. Curr Biol 2015; 25:964-8. [PMID: 25802150 DOI: 10.1016/j.cub.2015.02.021] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Revised: 01/30/2015] [Accepted: 02/03/2015] [Indexed: 10/23/2022]
Abstract
Bioluminescence, the creation and emission of light by organisms, affords insight into the lives of organisms doing it. Luminous living things are widespread and access diverse mechanisms to generate and control luminescence [1-5]. Among the least studied bioluminescent organisms are phylogenetically rare fungi-only 71 species, all within the ∼ 9,000 fungi of the temperate and tropical Agaricales order-are reported from among ∼ 100,000 described fungal species [6, 7]. All require oxygen [8] and energy (NADH or NADPH) for bioluminescence and are reported to emit green light (λmax 530 nm) continuously, implying a metabolic function for bioluminescence, perhaps as a byproduct of oxidative metabolism in lignin degradation. Here, however, we report that bioluminescence from the mycelium of Neonothopanus gardneri is controlled by a temperature-compensated circadian clock, the result of cycles in content/activity of the luciferase, reductase, and luciferin that comprise the luminescent system. Because regulation implies an adaptive function for bioluminescence, a controversial question for more than two millennia [8-15], we examined interactions between luminescent fungi and insects [16]. Prosthetic acrylic resin "mushrooms," internally illuminated by a green LED emitting light similar to the bioluminescence, attract staphilinid rove beetles (coleopterans), as well as hemipterans (true bugs), dipterans (flies), and hymenopterans (wasps and ants), at numbers far greater than dark control traps. Thus, circadian control may optimize energy use for when bioluminescence is most visible, attracting insects that can in turn help in spore dispersal, thereby benefitting fungi growing under the forest canopy, where wind flow is greatly reduced.
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Affiliation(s)
- Anderson G Oliveira
- Departamento de Oceanografia Física, Química, e Geológica, Instituto Oceanográfico, Universidade de São Paulo, São Paulo, SP 05508-120, Brazil
| | - Cassius V Stevani
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, SP 05508-000, Brazil.
| | - Hans E Waldenmaier
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, SP 05508-000, Brazil; Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP 05508-000, Brazil
| | - Vadim Viviani
- Departamento de Bioquímica, Universidade Federal de São Carlos, Campus Sorocoba, Rodovia João Leme dos Santos, km 110, Sorocaba, SP 18052-780, Brazil
| | - Jillian M Emerson
- Department of Biochemistry, Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA
| | - Jennifer J Loros
- Department of Biochemistry, Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA
| | - Jay C Dunlap
- Department of Genetics, Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA.
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Ventura FDF, Silva RTP, Stevani CV. History of the Bioluminescent Fungi Flor-de-Coco (Neonothopanus gardneri) and Effects of Culture Conditions on Light Emission. ACTA ACUST UNITED AC 2015. [DOI: 10.5935/1984-6835.20150003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Stevani CV, Oliveira AG, Mendes LF, Ventura FF, Waldenmaier HE, Carvalho RP, Pereira TA. Current Status of Research on Fungal Bioluminescence: Biochemistry and Prospects for Ecotoxicological Application. Photochem Photobiol 2013; 89:1318-26. [DOI: 10.1111/php.12135] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Accepted: 07/01/2013] [Indexed: 11/28/2022]
Affiliation(s)
- Cassius V. Stevani
- Departamento de Química Fundamental; Instituto de Química; Universidade de São Paulo; São Paulo SP Brazil
| | - Anderson G. Oliveira
- Departamento de Genética e Evolução; Universidade Federal de São Carlos; Sorocaba SP Brazil
| | - Luiz F. Mendes
- Departamento de Bioquímica; Instituto de Química; Universidade de São Paulo; São Paulo SP Brazil
| | - Fernanda F. Ventura
- Departamento de Química Fundamental; Instituto de Química; Universidade de São Paulo; São Paulo SP Brazil
- Fundação Jorge Duprat Figueiredo de Segurança e Medicina do Trabalho; São Paulo SP Brazil
| | - Hans E. Waldenmaier
- Departamento de Química Fundamental; Instituto de Química; Universidade de São Paulo; São Paulo SP Brazil
- Departamento de Bioquímica; Instituto de Química; Universidade de São Paulo; São Paulo SP Brazil
| | - Rodrigo P. Carvalho
- Departamento de Química Fundamental; Instituto de Química; Universidade de São Paulo; São Paulo SP Brazil
| | - Tatiana A. Pereira
- Departamento de Química Fundamental; Instituto de Química; Universidade de São Paulo; São Paulo SP Brazil
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Oliveira AG, Desjardin DE, Perry BA, Stevani CV. Evidence that a single bioluminescent system is shared by all known bioluminescent fungal lineages. Photochem Photobiol Sci 2012; 11:848-52. [DOI: 10.1039/c2pp25032b] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Mendes LF, Bastos EL, Desjardin DE, Stevani CV. Influence of culture conditions on mycelial growth and bioluminescence ofGerronema viridilucens. FEMS Microbiol Lett 2008; 282:132-9. [DOI: 10.1111/j.1574-6968.2008.01118.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Abstract
Electronically excited triplet carbonyls are formed during the oxidative degradation of polyunsaturated fatty acids, amino acids, and beta-dicarbonyl metabolites. Due to their long lifetime and high alkoxyl radical-like reactivity, triplet carbonyls may initiate deleterious reactions in biological systems. Here we study the quenching properties of conjugated dienes, specifically 2,4-hexadienoate (sorbate) and its alkyl ester, on triplet acetone generated chemically (thermolysis of tetramethyl-1,2-dioxetane) or enzymatically (horseradish peroxidase-catalyzed aerobic oxidation of isobutanal). Triplet acetone quenching rates were near diffusion control ( k q = 10 (8)-10 (9) M (-1) s (-1)) and accompanied by diene cis-trans isomerization. None of the dienes displays antioxidant activity in classical systems known to generate reactive oxygen species: superoxide anion radical, hydroxyl radical, alkoxyl and alkylperoxyl radicals, or singlet oxygen. Experiments with model systems used widely to study lipid peroxidation showed that sorbate can inhibit mitochondrial swelling induced by enzymically formed triplet benzophenone and quench the chemiluminescence of microsome preparations challenged with iron and ascorbate. Altogether, our data indicate that conjugated dienes can be used as specific quenchers of triplet carbonyls formed in biological systems during oxidative stress. Moreover, they suggest that the well-known food preservative properties of sorbate may be due to its triplet carbonyl quenching activity.
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Affiliation(s)
- Adriana C Velosa
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
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Bechara EJH, Costa C, Colepicolo P, Viviani V, Barros MP, Timmins GS, Lallf AB, Terra WR, Ferreira C, Stevani CV, Torres MA. Chemical, biological and evolutionary aspects of beetle bioluminescence. ARKIVOC 2007. [DOI: 10.3998/ark.5550190.0008.824] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Silva SM, Wagner K, Weiss D, Beckert R, Stevani CV, Baader WJ. Studies on the chemiexcitation step in peroxyoxalate chemiluminescence using steroid-substituted activators. LUMINESCENCE 2002; 17:362-9. [PMID: 12444589 DOI: 10.1002/bio.694] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The peroxyoxalate reaction is utilized in a wide variety of analytical applications; however, its mechanism is still not very well understood, especially with respect to the excitation step, where the 'chemical energy' is transformed into 'excitation energy'. This base-catalysed reaction of activated oxalic phenyl esters with hydrogen peroxide in the presence of highly fluorescent aromatic hydrocarbons with low oxidation potentials is the only known chemiluminescence system for which exists experimental evidence for the occurrence of the intermolecular chemically initiated electron exchange luminescence (CIEEL) mechanism of proven high efficiency for excited state formation. We report here the singlet quantum yields and relative rate constants of the excitation step (k(CAT)/k(D)), obtained in the peroxyoxalate reaction, utilizing steroid-substituted oxazolinylidenes as activators. In agreement with the CIEEL mechanism, a linear correlation of ln(k(CAT)/k(D)) with the oxidation potential of the activators is obtained, and the singlet quantum yields can be rationalized in terms of the free energy balance of the back electron transfer, leading to the formation of the activator's excited state. Thus, these results contribute to the experimental validation of the widely employed, thus still controversial, CIEEL mechanism.
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Affiliation(s)
- Sandra M Silva
- Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
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Silva SM, Casallanovo F, Oyamaguchi KH, Ciscato LFLM, Stevani CV, Baader WJ. Kinetic studies on the peroxyoxalate chemiluminescence reaction: determination of the cyclization rate constant. LUMINESCENCE 2002; 17:313-20. [PMID: 12407670 DOI: 10.1002/bio.693] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Although more currently utilized as analytical tool because of its high sensitivity and good reproducibility, the mechanism of the peroxyoxalate system, a chemiluminescence reaction with quantum yields only comparable to bioluminescence systems, has been extensively studied. The light emission mechanism can be divided in the pathway before chemiexcitation, which contains the rate-limiting steps, and the fast and kinetically non-observable chemiexcitation step. In this work, we obtain information on the mechanism of the slow pathways, attribute values to several rate constants prior to chemiexcitation and suggest a mechanistic scheme that could help optimization of conditions when the peroxyoxalate reaction is used as analytical tool.
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Affiliation(s)
- Sandra M Silva
- Instituto de Química, Universidade de São Paulo, São Paulo, S.P., Brazil
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Stevani CV, Liria CW, Miranda MTM, Bechara EJH. Cysteic acid is the chemical mediator of automotive clearcoat damage promoted by dragonfly eggs. J Appl Polym Sci 2001. [DOI: 10.1002/app.1584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Stevani CV, de Faria DL, Porto JS, Trindade DJ, Bechara EJ. Mechanism of automotive clearcoat damage by dragonfly eggs investigated by surface enhanced Raman scattering. Polym Degrad Stab 2000. [DOI: 10.1016/s0141-3910(99)00165-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Albertin R, Arribas MAG, Bastos EL, Röpke S, Sakai PN, Sanches AMM, Stevani CV, Umezu IS, Yu J, Baader WJ. Quimiluminescência orgânica: alguns experimentos de demonstração para a sala de aula. QUIM NOVA 1998. [DOI: 10.1590/s0100-40421998000600018] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Stevani CV, de Arruda Campos IP, Baader WJ. Synthesis and characterisation of an intermediate in the peroxyoxalate chemiluminescence: 4-chlorophenyl O,O-hydrogen monoperoxyoxalate. ACTA ACUST UNITED AC 1996. [DOI: 10.1039/p29960001645] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Stevani CV, Lima DF, Toscano VG, Baader WJ. Kinetic studies on the peroxyoxalate chemiluminescent reaction: imidazole as a nucleophilic catalyst. ACTA ACUST UNITED AC 1996. [DOI: 10.1039/p29960000989] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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