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Cortez AA, de Queiroz MX, de Oliveira Arnoldi Pellegrini V, Pellegrini VOA, de Mello Capetti CC, Dabul ANG, Liberato MV, Pratavieira S, Ricomini Filho AP, Polikarpov I. Recombinant Prevotella melaninogenica α-1,3 glucanase and Capnocytophaga ochracea α-1,6 glucanase as enzymatic tools for in vitro degradation of S. mutans biofilms. World J Microbiol Biotechnol 2023; 39:357. [PMID: 37882859 DOI: 10.1007/s11274-023-03804-z] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 10/11/2023] [Indexed: 10/27/2023]
Abstract
Dental biofilms represent a serious oral health problem playing a key role in the development of caries and other oral diseases. In the present work, we cloned and expressed in E. coli two glucanases, Prevotella melaninogenica mutanase (PmGH87) and Capnocytophaga ochracea dextranase (CoGH66), and characterized them biochemically and biophysically. Their three-dimensional structures were elucidated and discussed. Furthermore, we tested the capacity of the enzymes to hydrolyze mutan and dextran to prevent formation of Streptococcus mutans biofilms, as well as to degrade pre- formed biofilms in low and abundant sugar conditions. The percentage of residual biofilm was calculated for each treatment group in relation to the control, as well as the degree of synergism. Our results suggest that both PmGH87 and CoGH66 are capable of inhibiting biofilm formation grown under limited or abundant sucrose conditions. Degradation of pre-formed biofilms experiments reveal a time-dependent effect for the treatment with each enzyme alone. In addition, a synergistic and dose-dependent effects of the combined enzymatic treatment with the enzymes were observed. For instance, the highest biomass degradation was 95.5% after 30 min treatment for the biofilm grown in low sucrose concentration, and 93.8% after 2 h treatment for the biofilm grown in sugar abundant condition. Strong synergistic effects were observed, with calculated degree of synergism of 5.54 and 3.18, respectively and their structural basis was discussed. Jointly, these data can pave the ground for the development of biomedical applications of the enzymes for controlling growth and promoting degradation of established oral biofilms.
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Affiliation(s)
- Anelyse Abreu Cortez
- São Carlos Institute of Physics, University of São Paulo, Avenida João Dagnone, nº 1100, Jardim Santa Angelina - CEP 13563-120, São Carlos, SP, Brazil
| | - Mateus Xavier de Queiroz
- Piracicaba Dental School, University of Campinas, Avenida Limeira, nº 901, CEP 13414-903, Areião, Piracicaba, SP, Brazil
| | | | - Vanessa Oliveira Arnoldi Pellegrini
- São Carlos Institute of Physics, University of São Paulo, Avenida João Dagnone, nº 1100, Jardim Santa Angelina - CEP 13563-120, São Carlos, SP, Brazil
| | - Caio Cesar de Mello Capetti
- São Carlos Institute of Physics, University of São Paulo, Avenida João Dagnone, nº 1100, Jardim Santa Angelina - CEP 13563-120, São Carlos, SP, Brazil
| | - Andrei Nicoli Gebieluca Dabul
- São Carlos Institute of Physics, University of São Paulo, Avenida João Dagnone, nº 1100, Jardim Santa Angelina - CEP 13563-120, São Carlos, SP, Brazil
| | - Marcelo Vizoná Liberato
- São Carlos Institute of Physics, University of São Paulo, Avenida João Dagnone, nº 1100, Jardim Santa Angelina - CEP 13563-120, São Carlos, SP, Brazil
| | - Sebastião Pratavieira
- São Carlos Institute of Physics, University of São Paulo, Avenida João Dagnone, nº 1100, Jardim Santa Angelina - CEP 13563-120, São Carlos, SP, Brazil
| | - Antonio Pedro Ricomini Filho
- Piracicaba Dental School, University of Campinas, Avenida Limeira, nº 901, CEP 13414-903, Areião, Piracicaba, SP, Brazil
| | - Igor Polikarpov
- São Carlos Institute of Physics, University of São Paulo, Avenida João Dagnone, nº 1100, Jardim Santa Angelina - CEP 13563-120, São Carlos, SP, Brazil.
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Capetti CCDM, Pellegrini VOA, Espirito Santo MC, Cortez AA, Falvo M, Curvelo AADS, Campos E, Filgueiras JG, Guimaraes FEG, de Azevedo ER, Polikarpov I. Enzymatic production of xylooligosaccharides from corn cobs: Assessment of two different pretreatment strategies. Carbohydr Polym 2023; 299:120174. [PMID: 36876789 DOI: 10.1016/j.carbpol.2022.120174] [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: 07/03/2022] [Revised: 09/23/2022] [Accepted: 09/26/2022] [Indexed: 10/14/2022]
Abstract
Corn cobs (CCs) are abundant xylan-rich agricultural wastes. Here, we compared CCs XOS yields obtained via two different pretreatment routs, alkali and hydrothermal, using a set of recombinant endo- and exo-acting enzymes from GH10 and GH11 families, which have different restrictions for xylan substitutions. Furthermore, impacts of the pretreatments on chemical composition and physical structure of the CCs samples were evaluated. We demonstrated that alkali pretreatment route rendered 59 mg of XOS per gram of initial biomass, while an overall XOS yield of 115 mg/g was achieved via hydrothermal pretreatment using a combination of GH10 and GH11 enzymes. These results hold a promise of ecologically sustainable enzymatic valorization of CCs via "green" and sustainable XOS production.
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Affiliation(s)
- Caio Cesar de Mello Capetti
- Instituto de Física de São Carlos, Universidade de São Paulo, Avenida Trabalhador São-carlense 400, 13566-590 São Carlos, SP, Brazil
| | | | - Melissa Cristina Espirito Santo
- Instituto de Física de São Carlos, Universidade de São Paulo, Avenida Trabalhador São-carlense 400, 13566-590 São Carlos, SP, Brazil
| | - Anelyse Abreu Cortez
- Instituto de Física de São Carlos, Universidade de São Paulo, Avenida Trabalhador São-carlense 400, 13566-590 São Carlos, SP, Brazil
| | - Maurício Falvo
- Instituto de Física de São Carlos, Universidade de São Paulo, Avenida Trabalhador São-carlense 400, 13566-590 São Carlos, SP, Brazil
| | - Antonio Aprigio da Silva Curvelo
- Instituto de Química de São Carlos, Universidade de São Paulo, Avenida Trabalhador São-carlense 400, 13566-590 São Carlos, SP, Brazil
| | - Eleonora Campos
- Instituto de Biotecnología, CICVyA, Instituto Nacional de Tecnología Agropecuaria (INTA), Los Reseros y N. Repetto, Hurlingham B1686, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad Autónoma de Buenos Aires, Argentina
| | - Jefferson Gonçalves Filgueiras
- Instituto de Química, Universidade Federal Fluminense, Outeiro de São João Batista, 24020-007, Niterói, RJ, Brazil; Instituto de Física, Universidade Federal do Rio de Janeiro, CP68528, 21941-972, Rio de Janeiro, RJ, Brazil
| | | | - Eduardo Ribeiro de Azevedo
- Instituto de Física de São Carlos, Universidade de São Paulo, Avenida Trabalhador São-carlense 400, 13566-590 São Carlos, SP, Brazil
| | - Igor Polikarpov
- Instituto de Física de São Carlos, Universidade de São Paulo, Avenida Trabalhador São-carlense 400, 13566-590 São Carlos, SP, Brazil.
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Keller MB, Felby C, Labate CA, Pellegrini VOA, Higasi P, Singh RK, Polikarpov I, Blossom BM. A simple enzymatic assay for the quantification of C1-specific cellulose oxidation by lytic polysaccharide monooxygenases. Biotechnol Lett 2020; 42:93-102. [PMID: 31745843 PMCID: PMC6940319 DOI: 10.1007/s10529-019-02760-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 11/08/2019] [Indexed: 11/24/2022]
Abstract
OBJECTIVE The development of an enzymatic assay for the specific quantification of the C1-oxidation product, i.e. gluconic acid of cellulose active lytic polysaccharide monooxygenases (LPMOs). RESULTS In combination with a β-glucosidase, the spectrophotometrical assay can reliably quantify the specific C1- oxidation product of LPMOs acting on cellulose. It is applicable for a pure cellulose model substrate as well as lignocellulosic biomass. The enzymatic assay compares well with the quantification performed by HPAEC-PAD. In addition, we show that simple boiling is not sufficient to inactivate LPMOs and we suggest to apply a metal chelator in addition to boiling or to drastically increase pH for proper inactivation. CONCLUSIONS We conclude that the versatility of this simple enzymatic assay makes it useful in a wide range of experiments in basic and applied LPMO research and without the need for expensive instrumentation, e.g. HPAEC-PAD.
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Affiliation(s)
- M B Keller
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark
| | - C Felby
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark
| | - C A Labate
- Luiz de Queiroz College of Agriculture, University of São Paulo, Piracicaba, Brazil
| | - V O A Pellegrini
- São Carlos Institute of Physics, University of São Paulo, São Carlos, Brazil
| | - P Higasi
- São Carlos Institute of Physics, University of São Paulo, São Carlos, Brazil
| | - R K Singh
- Department of Chemistry, University of Copenhagen, Copenhagen, Denmark
| | - I Polikarpov
- São Carlos Institute of Physics, University of São Paulo, São Carlos, Brazil
| | - B M Blossom
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark.
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