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Rincón-Gamboa SM, Poutou-Piñales RA, Carrascal-Camacho AK. Distribution ofListeria spp., andListeria monocytogenesin micro- and small-scale meat product processing plants. Heliyon 2024; 10:e28662. [PMID: 38596116 PMCID: PMC11002064 DOI: 10.1016/j.heliyon.2024.e28662] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 03/19/2024] [Accepted: 03/21/2024] [Indexed: 04/11/2024] Open
Abstract
Listeriosis is a disease caused by L. monocytogenes, a relevant microorganism as a causative agent of foodborne diseases - FBD. This study aimed to evaluate the distribution of Listeria spp., and L. monocytogenes in different production areas in two small plants (A and B) and two micro-food processing plants (C and D) producing meat derivatives, located in different cities of Colombia. The methodology implemented was i. The analysis of sampling points is based on a harmonised tool. ii. Four samplings in each production plant between 2019 and 2020. iii. Isolation and identification of microorganisms through conventional microbiology, a semi-automated system, molecular serotyping and clonal characterisation by ERIC-PCR. L. monocytogenes frequency in the production plants belonging to the study ranged between 5.9 and 28.6 %; for Listeria spp., plants A and D had isolated, plant A had the highest proportion, while for L. monocytogenes geno-serotypes found were: 1/2a, 1/2c, 4a-4c, 4b, 4d - 4e, with geno-serotype 4b as the most frequent. Furthermore, possible persistent isolates were detected in plant C as the feasible sources of contamination, based on failures in flow management, raw material contaminated with L. monocytogenes, lack of standardised cooking processes and transfer of the microorganism through equipment and surfaces. Finally, in three of the four production plants assayed, L. monocytogenes or Listeria spp. were present in the packaging area in some of the samples taken during the study, which calls for increased and frequent monitoring, as well as constant technical support for the control of L. monocytogenes in micro and small-scale production plants.
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Affiliation(s)
- Sandra M. Rincón-Gamboa
- Laboratorio de Microbiología de Alimentos. Grupo de Biotecnología Ambiental e Industrial (GBAI). Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, D.C. 110-23, Colombia
- Laboratorio Biotecnología Molecular. Grupo de Biotecnología Ambiental e Industrial (GBAI). Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, D.C. 110-23, Colombia
| | - Raúl A. Poutou-Piñales
- Laboratorio Biotecnología Molecular. Grupo de Biotecnología Ambiental e Industrial (GBAI). Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, D.C. 110-23, Colombia
| | - Ana K. Carrascal-Camacho
- Laboratorio de Microbiología de Alimentos. Grupo de Biotecnología Ambiental e Industrial (GBAI). Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, D.C. 110-23, Colombia
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Mora-Gamboa MPC, Ferrucho-Calle MC, Ardila-Leal LD, Rojas-Ojeda LM, Galindo JF, Poutou-Piñales RA, Pedroza-Rodríguez AM, Quevedo-Hidalgo BE. Statistical Improvement of rGILCC 1 and rPOXA 1B Laccases Activity Assay Conditions Supported by Molecular Dynamics. Molecules 2023; 28:7263. [PMID: 37959683 PMCID: PMC10648076 DOI: 10.3390/molecules28217263] [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: 09/06/2023] [Revised: 10/20/2023] [Accepted: 10/21/2023] [Indexed: 11/15/2023] Open
Abstract
Laccases (E.C. 1.10.3.2) are glycoproteins widely distributed in nature. Their structural conformation includes three copper sites in their catalytic center, which are responsible for facilitating substrate oxidation, leading to the generation of H2O instead of H2O2. The measurement of laccase activity (UL-1) results may vary depending on the type of laccase, buffer, redox mediators, and substrates employed. The aim was to select the best conditions for rGILCC 1 and rPOXA 1B laccases activity assay. After sequential statistical assays, the molecular dynamics proved to support this process, and we aimed to accumulate valuable insights into the potential application of these enzymes for the degradation of novel substrates with negative environmental implications. Citrate buffer treatment T2 (CB T2) (pH 3.0 ± 0.2; λ420nm, 2 mM ABTS) had the most favorable results, with 7.315 ± 0.131 UL-1 for rGILCC 1 and 5291.665 ± 45.83 UL-1 for rPOXA 1B. The use of citrate buffer increased the enzyme affinity for ABTS since lower Km values occurred for both enzymes (1.49 × 10-2 mM for rGILCC 1 and 3.72 × 10-2 mM for rPOXA 1B) compared to those obtained in acetate buffer (5.36 × 10-2 mM for rGILCC 1 and 1.72 mM for rPOXA 1B). The molecular dynamics of GILCC 1-ABTS and POXA 1B-ABTS showed stable behavior, with root mean square deviation (RMSD) values not exceeding 2.0 Å. Enzyme activities (rGILCC 1 and rPOXA 1B) and 3D model-ABTS interactions (GILCC 1-ABTS and POXA 1B-ABTS) were under the strong influence of pH, wavelength, ions, and ABTS concentration, supported by computational studies identifying the stabilizing residues and interactions. Integration of the experimental and computational approaches yielded a comprehensive understanding of enzyme-substrate interactions, offering potential applications in environmental substrate treatments.
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Affiliation(s)
- María P. C. Mora-Gamboa
- Laboratorio de Biotecnología Molecular, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá 110231, Colombia (M.C.F.-C.); (L.D.A.-L.)
| | - María C. Ferrucho-Calle
- Laboratorio de Biotecnología Molecular, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá 110231, Colombia (M.C.F.-C.); (L.D.A.-L.)
| | - Leidy D. Ardila-Leal
- Laboratorio de Biotecnología Molecular, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá 110231, Colombia (M.C.F.-C.); (L.D.A.-L.)
- Laboratorio de Biotecnología Vegetal, Grupo de Investigación en Asuntos Ambientales y Desarrollo Sostenible (MINDALA), Departamento de Ciencias Agrarias y del Ambiente, Universidad Francisco de Paula Santander, Ocaña 546552, Colombia
| | - Lina M. Rojas-Ojeda
- Departamento de Química, Universidad Nacional de Colombia, Bogotá 111321, Colombia
| | - Johan F. Galindo
- Departamento de Química, Universidad Nacional de Colombia, Bogotá 111321, Colombia
| | - Raúl A. Poutou-Piñales
- Laboratorio de Biotecnología Molecular, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá 110231, Colombia (M.C.F.-C.); (L.D.A.-L.)
| | - Aura M. Pedroza-Rodríguez
- Laboratorio de Microbiología Ambiental y Suelos, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá 110231, Colombia
| | - Balkys E. Quevedo-Hidalgo
- Laboratorio de Biotecnología Aplicada, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá 110231, Colombia;
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Rincón-Gamboa SM, Poutou-Piñales RA, Carrascal-Camacho AK. Analysis of the assessment of antimicrobial susceptibility. Non-typhoid Salmonella in meat and meat products as model (systematic review). BMC Microbiol 2021; 21:223. [PMID: 34340654 PMCID: PMC8328484 DOI: 10.1186/s12866-021-02268-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 06/09/2021] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND The scientific publications of antimicrobial susceptibilities and resistance must be precise, with interpretations adjusted to the standard. In this frame, knowledge of antimicrobial resistance is fundamental in pathogenic microorganisms such as Salmonella spp., known for many annual deaths worldwide. The objective of this work was to compare the interpretation of standards, the concentrations, and the breakpoints, to study antimicrobial resistance in Non-Typhoidal Salmonella (NTS) isolated from beef, pork, and chicken meat, meat products, and propose additional considerations that improve the use and usefulness of published results. RESULTS After refining the search based on meeting the inclusion and exclusion criteria, 48 papers were selected. In 33 (68.8%) of them, the disc diffusion method was used, in 11 (22.9%) the MIC determination method, and in 4 (8.33%) were used both. In 24 (50%) of the articles, the selection of a different (correct) standard could have had an impact on the interpretation of antimicrobial susceptibility, which observed when considering three scenarios, i) comparison between the year of the isolation versus the implemented standard, ii) comparison between the year of submission versus implemented standard and iii) comparison between the year of publication versus implemented standard. CONCLUSIONS The most frequent scenario was the inadequate selection of standards, indicating that some studies had not ensured that applied standards kept in line with the date of isolation, date of publication and interpretation of susceptibilities. We proposed 2 years for standards use for resistance and multi-resistance interpretations. On the other hand, we invite researchers to publish their results in the shortest possible time, and editors and reviewers of scientific journals to prioritise these types of studies and verify the correspondence between the standard cited and the one used and the one to be taken into account.
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Affiliation(s)
- Sandra M Rincón-Gamboa
- Laboratorio de Microbiología de Alimentos. Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
- Laboratorio Biotecnología Molecular. Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
| | - Raúl A Poutou-Piñales
- Laboratorio Biotecnología Molecular. Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C., Colombia.
| | - Ana K Carrascal-Camacho
- Laboratorio de Microbiología de Alimentos. Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
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Rincón-Gamboa SM, Poutou-Piñales RA, Carrascal-Camacho AK. Antimicrobial Resistance of Non-Typhoid Salmonella in Meat and Meat Products. Foods 2021; 10:foods10081731. [PMID: 34441509 PMCID: PMC8392175 DOI: 10.3390/foods10081731] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 07/02/2021] [Accepted: 07/05/2021] [Indexed: 01/05/2023] Open
Abstract
Salmonella enterica serovars are associated with numerous annual deaths worldwide and are responsible for a large number of foodborne diseases. Within this frame of reference, knowledge of antimicrobial susceptibility represents the fundamental approach of most Salmonella treatments. Therefore, scientific publications of antimicrobial susceptibilities and resistance must be precise, with interpretations adjusted to a particular standard. Hence, the three objectives in this study were: (i) to describe the frequency of antimicrobial-resistant isolates of Non-Typhoidal Salmonella (NTS) isolated from beef, pork, chicken meat, and other meat products; (ii) to describe the distribution of serovars and their multi-resistance to antibiotics for clinical use (veterinary and human) between 1996 and 2019; and (iii) to propose additional considerations that could improve the use and usefulness of the published results. Our results determined that the predominant isolates came from poultry. Enteritidis and Typhimurium were the most reported serovars by MIC (with both having the highest resistance to TET) while the lowest resistance was to CIP and CRO for Enteritidis and Typhimurium, respectively. The multi-resistance pattern AMP AMC CEP GEN KAN STR TET was the most frequently observed pattern by MIC in Montevideo and Seftenberg, while, for disc diffusion, the pattern AMP STR TET was the most frequent in the Bredeney serotype. In conclusion, researchers should carry out homogeneous sampling procedures, identify the types of the samples, use standard identification methods, and employ appropriate standards for antimicrobial susceptibility interpretation. Additionally, there is also a need for all WHO members to comply with the WHA 73.5 resolution. Our final recommendation is for all producers to reduce antibiotic prophylactic use.
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Affiliation(s)
- Sandra M. Rincón-Gamboa
- Laboratorio de Microbiología de Alimentos, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C. 110-23, Colombia; (S.M.R.-G.); (A.K.C.-C.)
- Laboratorio Biotecnología Molecular, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C. 110-23, Colombia
| | - Raúl A. Poutou-Piñales
- Laboratorio Biotecnología Molecular, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C. 110-23, Colombia
- Correspondence: ; Fax: +57-1-320-83-20 (ext. 4021)
| | - Ana K. Carrascal-Camacho
- Laboratorio de Microbiología de Alimentos, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C. 110-23, Colombia; (S.M.R.-G.); (A.K.C.-C.)
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Castillo-Toro A, Mateus-Maldonado JF, Céspedes-Bernal DN, Peña-Carranza L, Páez-Morales AI, Poutou-Piñales RA, Salcedo-Reyes JC, Díaz-Ariza LA, Castillo-Carvajal LC, Pedroza-Rodríguez AM, Gómez-Méndez LD. Evaluation of two microcosm systems for co-treatment of LDPE oxo and lignocellulosic biomass for biochar production. Biomater Res 2021; 25:21. [PMID: 34215345 PMCID: PMC8253244 DOI: 10.1186/s40824-021-00222-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 06/07/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The co-transformation of solid waste of natural and anthropogenic origin can be carried out through solid-state-fermentation systems to obtain bio-products with higher added value and lower environmental impact. METHODS To evaluate the effect of Pleurotus ostreatus on co-transformation of oxo-degradable low-density polyethylene (LDPEoxo) sheets and lignocellulosic biomass (LCB), were assembled two 0.75 L microcosm systems in vertical (VMS) and horizontal (HMS) position. The pre-treated sheets with luminescent O2 plasma discharges were mixed with pine bark, hydrolyzed brewer's yeast and paper napkin fragments and incubated for 135 days at 20 ± 1.0 °C in the presence of the fungus. With the co-transformation residues, biochar (BC) was produced at 300 ± 1.0 °C (BC300) for 1 h, then used to carry out adsorption studies, using the malachite green dye (MG) at pH 4.0, 7.0 and 9.0 ± 0.2. Finally, the biochar was the substrate for the germination of carnation seeds (Dianthus caryophyllus) and Ray-grass (Lolium sp.) in vitro. RESULTS For HMS, the decrease in static contact angle (SCA) was 63.63% (p = 0.00824) and for VMS 74.45% (p = 0.00219), concerning the pristine. Plastic roughness in VMS was higher (26%) concerning the control. Throughout the 135 days, there were fungal growth and consequently laccase (Lac), manganese peroxidase (MnP) and lignin peroxidase (LiP) activities. During the first 75 days, CO2 production increased to 4.78 ± 0.01 and 4.98 ± 0.01 mg g-1 for HMS and VMS, respectively. In MG adsorption studies, the highest amount of the colourant adsorbed at both pH 4.0 and 7.0 ± 0.2. CONCLUSIONS Finally, the biochar or the biochar enriched with low concentrations of plant growth-promoting microorganisms and inorganic fertilizer favours the germination of Dianthus caryophyllus and Lolium sp., seeds.
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Affiliation(s)
- Alejandra Castillo-Toro
- Laboratorio de Microbiología Ambiental y de Suelos, Unidad de Investigaciones Agropecuarias (UNIDIA). Departamento de Microbiología. Facultad de Ciencias. Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Juan F Mateus-Maldonado
- Laboratorio de Microbiología Ambiental y de Suelos, Unidad de Investigaciones Agropecuarias (UNIDIA). Departamento de Microbiología. Facultad de Ciencias. Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Diana N Céspedes-Bernal
- Laboratorio de Microbiología Ambiental y de Suelos, Unidad de Investigaciones Agropecuarias (UNIDIA). Departamento de Microbiología. Facultad de Ciencias. Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Leonardo Peña-Carranza
- Laboratorio de Microbiología Ambiental y de Suelos, Unidad de Investigaciones Agropecuarias (UNIDIA). Departamento de Microbiología. Facultad de Ciencias. Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Adriana I Páez-Morales
- Laboratorio de Microbiología Ambiental y de Suelos, Unidad de Investigaciones Agropecuarias (UNIDIA). Departamento de Microbiología. Facultad de Ciencias. Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Raúl A Poutou-Piñales
- Laboratorio de Biotecnología Molecular, Grupo de Biotecnología Ambiental e Industrial (GBAI). Departamento de Microbiología. Facultad de Ciencias. Pontificia Universidad Javeriana, Bogotá, D.C., Colombia
| | - Juan C Salcedo-Reyes
- Laboratorio de Películas Delgadas y Nanofotónica. Departamento de Física. Facultad de Ciencias. Pontificia Universidad Javeriana, Bogotá, D.C., Colombia
| | - Lucía A Díaz-Ariza
- Laboratorio de Interacciones Planta Suelo Microorganismos (LAMIC), Grupo de Investigación en Agricultura Biológica. Departamento de Biología. Facultad de Ciencias, Bogotá, D.C., Colombia
| | - Laura C Castillo-Carvajal
- Facultad de Ciencias de la Salud, Universidad Anáhuac Campus Norte, Huixquilucan, Estado de México, Mexico
| | - Aura M Pedroza-Rodríguez
- Laboratorio de Microbiología Ambiental y de Suelos, Unidad de Investigaciones Agropecuarias (UNIDIA). Departamento de Microbiología. Facultad de Ciencias. Pontificia Universidad Javeriana, Bogotá, Colombia.
| | - Luis D Gómez-Méndez
- Laboratorio de Microbiología Ambiental y de Suelos, Unidad de Investigaciones Agropecuarias (UNIDIA). Departamento de Microbiología. Facultad de Ciencias. Pontificia Universidad Javeriana, Bogotá, Colombia.
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Ardila-Leal LD, Poutou-Piñales RA, Pedroza-Rodríguez AM, Quevedo-Hidalgo BE. A Brief History of Colour, the Environmental Impact of Synthetic Dyes and Removal by Using Laccases. Molecules 2021; 26:3813. [PMID: 34206669 PMCID: PMC8270347 DOI: 10.3390/molecules26133813] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [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: 05/16/2021] [Revised: 06/12/2021] [Accepted: 06/16/2021] [Indexed: 12/07/2022] Open
Abstract
The history of colour is fascinating from a social and artistic viewpoint because it shows the way; use; and importance acquired. The use of colours date back to the Stone Age (the first news of cave paintings); colour has contributed to the social and symbolic development of civilizations. Colour has been associated with hierarchy; power and leadership in some of them. The advent of synthetic dyes has revolutionized the colour industry; and due to their low cost; their use has spread to different industrial sectors. Although the percentage of coloured wastewater discharged by the textile; food; pharmaceutical; cosmetic; and paper industries; among other productive areas; are unknown; the toxic effect and ecological implications of this discharged into water bodies are harmful. This review briefly shows the social and artistic history surrounding the discovery and use of natural and synthetic dyes. We summarise the environmental impact caused by the discharge of untreated or poorly treated coloured wastewater to water bodies; which has led to physical; chemical and biological treatments to reduce the colour units so as important physicochemical parameters. We also focus on laccase utility (EC 1.10.3.2), for discolouration enzymatic treatment of coloured wastewater, before its discharge into water bodies. Laccases (p-diphenol: oxidoreductase dioxide) are multicopper oxidoreductase enzymes widely distributed in plants, insects, bacteria, and fungi. Fungal laccases have employed for wastewater colour removal due to their high redox potential. This review includes an analysis of the stability of laccases, the factors that influence production at high scales to achieve discolouration of high volumes of contaminated wastewater, the biotechnological impact of laccases, and the degradation routes that some dyes may follow when using the laccase for colour removal.
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Affiliation(s)
- Leidy D. Ardila-Leal
- Grupo de Biotecnología Ambiental e Industrial (GBAI), Laboratorio de Biotecnología Molecular, Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana (PUJ), Bogotá 110-23, DC, Colombia;
| | - Raúl A. Poutou-Piñales
- Grupo de Biotecnología Ambiental e Industrial (GBAI), Laboratorio de Biotecnología Molecular, Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana (PUJ), Bogotá 110-23, DC, Colombia;
| | - Aura M. Pedroza-Rodríguez
- Grupo de Biotecnología Ambiental e Industrial (GBAI), Laboratorio de Microbiología Ambiental y de Suelos, Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana (PUJ), Bogotá 110-23, DC, Colombia;
| | - Balkys E. Quevedo-Hidalgo
- Grupo de Biotecnología Ambiental e Industrial (GBAI), Laboratorio de Biotecnología Aplicada, Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana (PUJ), Bogotá 110-23, DC, Colombia;
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Ardila-Leal LD, Monterey-Gutiérrez PA, Poutou-Piñales RA, Quevedo-Hidalgo BE, Galindo JF, Pedroza-Rodríguez AM. Recombinant laccase rPOXA 1B real-time, accelerated and molecular dynamics stability study. BMC Biotechnol 2021; 21:37. [PMID: 34088291 PMCID: PMC8178886 DOI: 10.1186/s12896-021-00698-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 05/24/2021] [Indexed: 12/28/2022] Open
Abstract
Background Laccases (EC 1.10.3.2) are multi-copper oxidoreductases with great biotechnological importance due to their high oxidative potential and utility for removing synthetic dyes, oxidizing phenolic compounds, and degrading pesticides, among others. Methods A real-time stability study (RTS) was conducted for a year, by using enzyme concentrates from 3 batches (L1, L3, and L4). For which, five temperatures 243.15, 277.15, 298.15, 303.15, 308.15, and 313.15 K were assayed. Using RTS data and the Arrhenius equation, we calculated the rPOXA 1B accelerated stability (AS). Molecular dynamics (MD) computational study results were very close to those obtained experimentally at four different temperatures 241, 278, 298, and 314 K. Results In the RTS, 101.16, 115.81, 75.23, 46.09, 5.81, and 4.83% of the relative enzyme activity were recovered, at respective assayed temperatures. AS study, showed that rPOXA 1B is stable at 240.98 ± 5.38, 277.40 ± 1.32 or 297.53 ± 3.88 K; with t1/2 values of 230.8, 46.2, and 12.6 months, respectively. Kinetic and thermodynamic parameters supported the high stability of rPOXA 1B, with an Ed value of 41.40 KJ mol− 1, a low variation of KM and Vmax, at 240.98 ± 5.38, and 297.53 ± 3.88 K, and ∆G values showing deactivation reaction does not occur. The MD indicates that fluctuations in loop, coils or loops with hydrophilic or intermediate polarity amino acids as well as in some residues of POXA 1B 3D structure, increases with temperature; changing from three fluctuating residues at 278 K to six residues at 298 K, and nine residues at 314 K. Conclusions Laccase rPOXA 1B demonstrated experimentally and computationally to be a stable enzyme, with t1/2 of 230.8, 46.2 or 12.6 months, if it is preserved impure without preservatives at temperatures of 240.98 ± 5.38, 277.40 ± 1.32 or 297.53 ± 3.88 K respectively; this study could be of great utility for large scale producers. Supplementary Information The online version contains supplementary material available at 10.1186/s12896-021-00698-3.
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Affiliation(s)
- Leidy D Ardila-Leal
- Departamento de Microbiología. Facultad de Ciencias. Pontificia Universidad Javeriana (PUJ). Bogotá, Laboratorio de Biotecnología Molecular, Grupo de Biotecnología Ambiental e Industrial (GBAI), Bogotá, D.C, Colombia
| | - Pedro A Monterey-Gutiérrez
- Vicerrectoría Académica. Universidad Antonio Nariño, Programa de Maestría y Doctorado en Educación Matemática, Bogotá, D.C, Colombia
| | - Raúl A Poutou-Piñales
- Departamento de Microbiología. Facultad de Ciencias. Pontificia Universidad Javeriana (PUJ). Bogotá, Laboratorio de Biotecnología Molecular, Grupo de Biotecnología Ambiental e Industrial (GBAI), Bogotá, D.C, Colombia.
| | - Balkys E Quevedo-Hidalgo
- Departamento de Microbiología. Facultad de Ciencias. Pontificia Universidad Javeriana (PUJ), Laboratorio de Biotecnología Aplicada, Grupo de Biotecnología Ambiental e Industrial (GBAI), Bogotá, D.C, Colombia.
| | - Johan F Galindo
- Departamento de Química, Universidad Nacional de Colombia, Bogotá, D.C, Colombia.
| | - Aura M Pedroza-Rodríguez
- Departamento de Microbiología. Facultad de Ciencias. Pontificia Universidad Javeriana (PUJ). Bogotá, Laboratorio de Microbiología Ambiental y de Suelos, Grupo de Biotecnología Ambiental e Industrial (GBAI), Bogotá, D.C, Colombia
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Gómez-Méndez LD, Jiménez-Borrego LC, Pérez-Flórez A, Poutou-Piñales RA, Pedroza-Rodríguez AM, Salcedo-Reyes JC, Vargas A, Bogoya JM. LDPE Transformation by Exposure to Sequential Low-Pressure Plasma and TiO 2/UV Photocatalysis. Molecules 2021; 26:molecules26092513. [PMID: 33925792 PMCID: PMC8123516 DOI: 10.3390/molecules26092513] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 04/04/2021] [Accepted: 04/08/2021] [Indexed: 11/16/2022] Open
Abstract
Low-density polyethylene (LDPE) sheets (3.0 ± 0.1 cm) received sequential treatment, first by the action of direct-current low-pressure plasma (DC-LPP) with a 100% oxygen partial pressure, 3.0 × 10−2 mbar pressure, 600 V DC tension, 5.6 cm distance, 6-min treatment. Then, sheets were submitted to TiO2 photocatalysis at UV radiation at 254 nm (TiO2/UV) with a pH value of 4.5 ± 0.2 and a TiO2 concentration of 1 gL−1. We achieved a complementary effect on the transformation of LDPE films. With the first treatment, ablation was generated, which increased hydrophilicity. With the second treatment, the cavities appeared. The changes in the LDPE sheets’ hydrophobicity were measured using the static contact angle (SCA) technique. The photocatalytic degradation curve at 400 h revealed that the DC-LPP photocatalysis sequential process decreased SCA by 82°. This was achieved by the incorporation of polar groups, which increased hydrophilicity, roughness, and rigidity by 12 and 38%, respectively. These sequential processes could be employed for LDPE and other material biodegradation pretreatment.
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Affiliation(s)
- Luis D. Gómez-Méndez
- Laboratorio de Microbiología Ambiental y Suelos, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá 110-23, DC, Colombia;
- Grupo de Películas Delgadas y Nanofotónica, Departamento de Física, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá 110-23, DC, Colombia; (L.C.J.-B.); (J.C.S.-R.)
- Correspondence:
| | - Luis C. Jiménez-Borrego
- Grupo de Películas Delgadas y Nanofotónica, Departamento de Física, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá 110-23, DC, Colombia; (L.C.J.-B.); (J.C.S.-R.)
| | - Alejandro Pérez-Flórez
- Grupo de Investigación en Fitoquímica (GIFUJ), Departamento de Química, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá 110-23, DC, Colombia;
| | - Raúl A. Poutou-Piñales
- Laboratorio de Biotecnología Molecular, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá 110-23, DC, Colombia;
| | - Aura M. Pedroza-Rodríguez
- Laboratorio de Microbiología Ambiental y Suelos, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá 110-23, DC, Colombia;
| | - Juan C. Salcedo-Reyes
- Grupo de Películas Delgadas y Nanofotónica, Departamento de Física, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá 110-23, DC, Colombia; (L.C.J.-B.); (J.C.S.-R.)
| | - Andrés Vargas
- Grupo de Física Matemática, Departamento de Matemáticas, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá 110-23, DC, Colombia;
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Matiz-Villamil A, Chamorro-Tobar IC, Sáenz-Aponte A, Pulido-Villamarín A, Carrascal-Camacho AK, Gutiérrez-Rojas IS, Sánchez-Garibello AM, Barrientos-Anzola IA, Zambrano-Moreno DC, Poutou-Piñales RA. Management of swine mortalities through the use of a mixed composting-accelerating bio-inoculant. Heliyon 2021; 7:e05884. [PMID: 33506125 PMCID: PMC7814161 DOI: 10.1016/j.heliyon.2020.e05884] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 09/22/2020] [Accepted: 12/24/2020] [Indexed: 11/23/2022] Open
Abstract
A composting-accelerating bio-inoculant (Bacillus subtilis, Talaromyces sayulitensis (HC1), Steinernema sp., and Heterorhabditis sp.) was evaluated in a composting process made up of a different mix of wood chips, pig manure, urine, and swine mortality (raw material RM). Three different treatments (T1, T2, and T3) were assessed, and physicochemical, microbiological, and entomological evaluations were carried out at 0 and 45 days of the composting process. The highest organic nitrogen (1.34 %) concentration was detected in swine mortality, whereas the highest total oxidizable organic carbon (39.1 %) concentration was observed in wood chips. Salmonella spp., was not identified in any of the raw materials. Clostridium spp., count was 5.5, 2.0, and 1.0 Log10 unit, for pig manure, wood chips, and swine mortality, respectively. Pig manure, swine mortality, and wood chip total coliform count was 6.21, 5.32, and 1 Log10 unit, respectively. Helminth eggs were not detected in any of the RM and Cryptosporidium spp., oocysts were occasionally found in pig manure and wood chips. Several types of flies were identified, Musca domestica, Muscina stabulans, Stomoxys calcitrans, Fannia canicularis, Sarcophaga sp., and Calliphora sp. Treatment 3 (45.11 % swine mortality, 33.33 % wood chips, and 21.55 %, urine and bio-inoculant) had the greatest total oxidizable organic carbon availability, the highest carbon/nitrogen (C/N) ratio (20.67, p < 0.05), and the lowest dipterous larvae count. Moreover, Salmonella sp., was not observed and had only low Clostridium spp., and fecal coliform count. The bio-inoculant's effect on C/N ratio, cation exchange capacity, and electrical conductivity were beneficial, and resulted in production of a fertilizer complying with EPA 600/1-87-014, EPA 40 CFR Part 258, and NTC5167/11 norms. According to the characterization protocols used in this study the compost was apparently free from bacterial and parasitic pathogens and minimal dipteran counts. Last, maturation time was 15 days shorter compared with control (C4).
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Affiliation(s)
- Adriana Matiz-Villamil
- Laboratorio de Biotecnología Aplicada, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
- Corresponding author.
| | - Iliana C. Chamorro-Tobar
- Centro de Investigación y Transferencia de Tecnología del Sector Porcícola (CENIPORCINO), Asociación Porkcolombia – Fondo Nacional de la Porcicultura, Bogotá D.C., Colombia
| | - Adriana Sáenz-Aponte
- Laboratorio de Control Biológico, Departamento de Biología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
| | - Adriana Pulido-Villamarín
- Unidad de Investigaciones Agropecuarias (UNIDIA), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
| | - Ana K. Carrascal-Camacho
- Laboratorio de Microbiología de Alimentos, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
| | - Ivonne S. Gutiérrez-Rojas
- Laboratorio de Biotecnología Aplicada, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
| | - Andrea M. Sánchez-Garibello
- Laboratorio de Biotecnología Aplicada, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
| | - Irina A. Barrientos-Anzola
- Laboratorio de Microbiología de Alimentos, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
| | - Diana C. Zambrano-Moreno
- Centro de Investigación y Transferencia de Tecnología del Sector Porcícola (CENIPORCINO), Asociación Porkcolombia – Fondo Nacional de la Porcicultura, Bogotá D.C., Colombia
| | - Raúl A. Poutou-Piñales
- Laboratorio de Biotecnología Molecular, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
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10
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Blanco-Vargas A, Rodríguez-Gacha LM, Sánchez-Castro N, Garzón-Jaramillo R, Pedroza-Camacho LD, Poutou-Piñales RA, Rivera-Hoyos CM, Díaz-Ariza LA, Pedroza-Rodríguez AM. Phosphate-solubilizing Pseudomonas sp., and Serratia sp., co-culture for Allium cepa L. growth promotion. Heliyon 2020; 6:e05218. [PMID: 33088968 PMCID: PMC7566105 DOI: 10.1016/j.heliyon.2020.e05218] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 05/21/2020] [Accepted: 10/08/2020] [Indexed: 11/18/2022] Open
Abstract
Different genus of bacteria has been reported with the capacity to solubilize phosphorus from phosphate rock (PR). Pseudomonas sp., (A18) and Serratia sp., (C7) isolated from soils at the “Departamento de Boyacá” Colombia, where Allium cepa is cultivated. Bacteria were cultured in MT11B media and evaluated as a bio-fertilizer for A. cepa germination and growth during two months at greenhouse scale. Pseudomonas sp., and Serratia sp., cultured at 30 °C, 48 h in SMRS1 agar modified with PR, (as an inorganic source of phosphorus), presented a phosphate solubilization index (SI) of 2.1 ± 0.2 and 2.0 ± 0.3 mm, respectively. During interaction assays no inhibition halos were observed, demonstrating there was no antagonism between them. In MT11B media growth curve (12 h) demonstrated that co-culture can grow in the presence of PR and glucose concentrations 7.5-fold, lower than in SMRS1 media and brewer's yeast hydrolysate; producing phosphatase enzymes with a volumetric activity of 1.3 ± 0.03 PU at 6 h of culture and 0.8 ± 0.04 PU at 12 h. Moreover, co-culture released soluble phosphorus at a rate of 58.1 ± 0.28 mg L−1 at 8 h and 88.1 ± 0.32 mg L−1 at 12 h. After five days of evaluation it was observed that germination percentage was greater than 90 % of total evaluated seeds, when placing them in contact with the co-culture in a concentration of 1 × 108 CFU mL−1. Furthermore, it was demonstrated that co-culture application (10 mL per experimental unit to complete 160 mL in two months) at 8.0 Log10 CFU mL−1 twice a week for two months increased A. cepa total dry weight (69 ± 13 mg) compared with total dry weight (38 ± 5.0 mg) obtained with the control with water.
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Affiliation(s)
- Andrea Blanco-Vargas
- Laboratorio de Microbiología Ambiental y de Suelos, Unidad de Investigaciones Agropecuarias (UNIDIA), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, D.C., Colombia
- Laboratorio de Biotecnología Molecular, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, D.C., Colombia
- Laboratorio Asociaciones Suelo, Planta Microorganismos (LAMIC), Grupo de Investigación en Agricultura Biológica, Departamento de Biología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, D.C., Colombia
| | - Lina M. Rodríguez-Gacha
- Laboratorio de Microbiología Ambiental y de Suelos, Unidad de Investigaciones Agropecuarias (UNIDIA), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, D.C., Colombia
| | - Natalia Sánchez-Castro
- Laboratorio de Microbiología Ambiental y de Suelos, Unidad de Investigaciones Agropecuarias (UNIDIA), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, D.C., Colombia
| | - Rafael Garzón-Jaramillo
- Laboratorio de Microbiología Ambiental y de Suelos, Unidad de Investigaciones Agropecuarias (UNIDIA), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, D.C., Colombia
| | - Lucas D. Pedroza-Camacho
- Laboratorio de Microbiología Ambiental y de Suelos, Unidad de Investigaciones Agropecuarias (UNIDIA), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, D.C., Colombia
| | - Raúl A. Poutou-Piñales
- Laboratorio de Biotecnología Molecular, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, D.C., Colombia
| | - Claudia M. Rivera-Hoyos
- Laboratorio de Biotecnología Molecular, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, D.C., Colombia
| | - Lucía A. Díaz-Ariza
- Laboratorio Asociaciones Suelo, Planta Microorganismos (LAMIC), Grupo de Investigación en Agricultura Biológica, Departamento de Biología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, D.C., Colombia
| | - Aura M. Pedroza-Rodríguez
- Laboratorio de Microbiología Ambiental y de Suelos, Unidad de Investigaciones Agropecuarias (UNIDIA), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, D.C., Colombia
- Corresponding author.
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11
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Ardila-Leal LD, Alvarado-Ramírez MF, Gutiérrez-Rojas IS, Poutou-Piñales RA, Quevedo-Hidalgo B, Pérez-Flórez A, Pedroza-Rodríguez AM. Low-cost media statistical design for laccase rPOXA 1B production in P. pastoris. Heliyon 2020; 6:e03852. [PMID: 32368658 PMCID: PMC7184261 DOI: 10.1016/j.heliyon.2020.e03852] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/09/2020] [Accepted: 04/21/2020] [Indexed: 01/09/2023] Open
Abstract
Laccases (E.C. 1.10.3.2) are multicopper oxidases of great importance in the industry due to their non-specificity and high oxidative potential. Laccases are useful to bleach synthetic dyes, oxidize phenolic compounds and degrade pesticides, among others. Hence, the objective of this work was to optimize low cost culture media for recombinant (rPOXA 1B) laccase production from Pleurotus ostreatus in Pichia pastoris. To this end, low cost nitrogen sources were studied, such as malt extract, isolated soy protein and milk serum. Following, two central composite designs (CCD) were performed. In CCD-1 different concentrations of glucose USP (0–13.35 gL-1), protein isolated soy protein (5–25 gL-1), malt extract (3.5–17.5 gL-1) and (NH4)2SO4 (1.3–6.5 gL-1) were evaluated. In CCD-2 only different concentrations of glucose USP (7.9–22 gL-1) and isolated soy protein (15.9–44.9 gL-1) were evaluated. CCD-2 results led to a One Factor Experimental design (OFED) to evaluate higher isolated soy protein (20–80 gL-1) concentrations. In all designs, (CCD-1, CCD-2 and OFED) CuSO4 (0.16 gL-1) and chloramphenicol (0.1 gL-1) concentrations remained unchanged. For the OFED after sequential statistical optimization, an enzyme activity of 12,877.3 ± 481.2 UL−1 at 168 h was observed. rPOXA 1B activity increased 30.54 % in comparison with CCD-2 results. Final composition of optimized media was: 20 gL-1 glucose USP, 50 gL-1 isolated soy protein 90 % (w/w), 11.74 gL-1 malt extract, and 4.91 gL-1 (NH4)2SO4. With this culture media, it was possible to reduce culture media costs by 89.84 % in comparison with improved culture media previously described by our group.
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Affiliation(s)
- Leidy D Ardila-Leal
- Laboratorio de Biotecnología Molecular, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana (PUJ), Bogotá, D.C., Colombia
| | - María F Alvarado-Ramírez
- Laboratorio de Biotecnología Aplicada, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana (PUJ), Bogotá, D.C., Colombia
| | - Ivonne S Gutiérrez-Rojas
- Laboratorio de Biotecnología Aplicada, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana (PUJ), Bogotá, D.C., Colombia
| | - Raúl A Poutou-Piñales
- Laboratorio de Biotecnología Molecular, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana (PUJ), Bogotá, D.C., Colombia
| | - Balkys Quevedo-Hidalgo
- Laboratorio de Biotecnología Aplicada, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana (PUJ), Bogotá, D.C., Colombia
| | - Alejandro Pérez-Flórez
- Grupo de Fitoquímica de la PUJ (GIFUJ), Departamento de Química, Facultad de Ciencias, Pontificia Universidad Javeriana (PUJ), Bogotá, D.C., Colombia
| | - Aura M Pedroza-Rodríguez
- Laboratorio de Microbiología Ambiental y de Suelos, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana (PUJ), Bogotá, D.C., Colombia
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12
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Ardila-Leal LD, Albarracín-Pardo DA, Rivera-Hoyos CM, Morales-Álvarez ED, Poutou-Piñales RA, Cardozo-Bernal AM, Quevedo-Hidalgo BE, Pedroza-Rodríguez AM, Díaz-Rincón DJ, Rodríguez-López A, Alméciga-Díaz CJ, Cuervo-Patiño CL. Media improvement for 10 L bioreactor production of rPOXA 1B laccase by P. pastoris. 3 Biotech 2019; 9:447. [PMID: 31763125 DOI: 10.1007/s13205-019-1979-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 10/29/2019] [Indexed: 01/31/2023] Open
Abstract
In this work, we statistically improved culture media for rPOXA 1B laccase production, expressed in Pichia pastoris containing pGAPZαA-LaccPost-Stop construct and assayed at 10 L bioreactor production scale (6 L effective work volume). The concentrated enzyme was evaluated for temperature and pH stability and kinetic parameter, characterized by monitoring oxidation of different ABTS [2, 20-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)] substrate concentrations. Plackett-Burman experimental design (PBED) implementation improved previous work results by 3.05-fold, obtaining a laccase activity of 1373.72 ± 0.37 U L-1 at 168 h of culture in a 500 mL shake flask. In contrast, one factor experimental design (OFED) applied after PBED improved by threefold the previous study, additionally increasing the C/N ratio. Employing OFED media at 10 L bioreactor scale was capable of producing 3159.93 ± 498.90 U L-1 at 192 h, representing a 2.4-fold increase. rPOXA 1B concentrate remained stable between 10 and 50 °C and retained over 70% residual enzymatic activity at 60 °C and 50% at 70 °C. Concerning pH stability, the enzyme was stable at pH 4.0 ± 0.2 with a residual activity greater than 90%. The lowest residual activity (60%) was obtained at pH 10.0 ± 0.2. Furthermore, the apparent kinetic parameters were V max of 3.163 × 10-2 mM min-1 and K m of 1.716 mM. Collectively, regarding enzyme stability our data provide possibilities for applications involving a wide range of pH and temperatures.
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13
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Pimentel N, Rodríguez-Lopez A, Díaz S, Losada JC, Díaz-Rincón DJ, Cardona C, Espejo-Mojica ÁJ, Ramírez AM, Ruiz F, Landázuri P, Poutou-Piñales RA, Cordoba-Ruiz HA, Alméciga-Díaz CJ, Barrera-Avellaneda LA. Production and characterization of a human lysosomal recombinant iduronate-2-sulfatase produced in Pichia pastoris. Biotechnol Appl Biochem 2018; 65:655-664. [DOI: 10.1002/bab.1660] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 03/24/2018] [Indexed: 12/23/2022]
Affiliation(s)
- Natalia Pimentel
- Institute for the Study of Inborn Errors of Metabolism; Faculty of Science; Pontificia Universidad Javeriana; Bogotá Colombia
| | - Alexander Rodríguez-Lopez
- Institute for the Study of Inborn Errors of Metabolism; Faculty of Science; Pontificia Universidad Javeriana; Bogotá Colombia
- Chemical Department; Faculty of Science; Pontificia Universidad Javeriana; Bogotá D.C. Colombia
| | - Sergio Díaz
- Institute for the Study of Inborn Errors of Metabolism; Faculty of Science; Pontificia Universidad Javeriana; Bogotá Colombia
| | - Juan C. Losada
- Institute for the Study of Inborn Errors of Metabolism; Faculty of Science; Pontificia Universidad Javeriana; Bogotá Colombia
| | - Dennis J. Díaz-Rincón
- Institute for the Study of Inborn Errors of Metabolism; Faculty of Science; Pontificia Universidad Javeriana; Bogotá Colombia
| | - Carolina Cardona
- Institute for the Study of Inborn Errors of Metabolism; Faculty of Science; Pontificia Universidad Javeriana; Bogotá Colombia
| | - Ángela J. Espejo-Mojica
- Institute for the Study of Inborn Errors of Metabolism; Faculty of Science; Pontificia Universidad Javeriana; Bogotá Colombia
| | - Aura M. Ramírez
- Institute for the Study of Inborn Errors of Metabolism; Faculty of Science; Pontificia Universidad Javeriana; Bogotá Colombia
| | - Fredy Ruiz
- Control; Power Electronics and Management of Technological Innovation (CEPIT); Electronic Engineering Department; Pontificia Universidad Javeriana; Bogotá D.C. Colombia
| | - Patricia Landázuri
- Research Group on Cardiovascular and Metabolic Diseases (GECAVYME); Faculty of Health Sciences; University of Quindío; Armenia-Quindío Colombia
| | - Raúl A. Poutou-Piñales
- Grupo de Biotecnología Ambiental e Industrial (GBAI); Faculty of Science; Pontificia Universidad Javeriana; Bogotá D.C. Colombia
| | - Henry A. Cordoba-Ruiz
- Chemical Department; Faculty of Science; Pontificia Universidad Javeriana; Bogotá D.C. Colombia
| | - Carlos J. Alméciga-Díaz
- Institute for the Study of Inborn Errors of Metabolism; Faculty of Science; Pontificia Universidad Javeriana; Bogotá Colombia
| | - Luis A. Barrera-Avellaneda
- Institute for the Study of Inborn Errors of Metabolism; Faculty of Science; Pontificia Universidad Javeriana; Bogotá Colombia
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14
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Rivera-Hoyos CM, Morales-Álvarez ED, Abelló-Esparza J, Buitrago-Pérez DF, Martínez-Aldana N, Salcedo-Reyes JC, Poutou-Piñales RA, Pedroza-Rodríguez AM. Detoxification of pulping black liquor with Pleurotus ostreatus or recombinant Pichia pastoris followed by CuO/TiO 2/visible photocatalysis. Sci Rep 2018; 8:3503. [PMID: 29472555 PMCID: PMC5823849 DOI: 10.1038/s41598-018-21597-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Accepted: 02/07/2018] [Indexed: 12/28/2022] Open
Abstract
Cellulose-pulping requires chemicals such as Cl2, ClO2, H2O2, and O2. The black liquor (BL) generated exhibits a high chemical oxygen demand (COD), five-day biochemical oxygen demand (BOD5), and chlorophenol content, along with an augmented colour and increased pH. BL is often discharged into water bodies, where it has a negative impact on the environment. Towards that end, laccases are of great interest for bioremediation, since they can degrade aromatic and non-aromatic compounds while reducing O2 to water instead of H2O2. As such, we evaluated Pleurotus ostreatus and Pichia pastoris (which produces rPOXA 1B laccase) in the treatment of synthetic BL (SBL) in an "in vitro" modified Kraft process followed by CuO/TiO2/visible light photocatalysis. Treating SBL with P. ostreatus viable biomass (VB) followed by CuO/TiO2/visible light photocatalysis resulted in 80.3% COD removal and 70.6% decolourisation. Toxic compounds such as 2-methylphenol, 4-methylphenol, and 2-methoxyphenol were eliminated. Post-treated SBL exhibited low phytotoxicity, as evidenced by a Lactuca sativa L seed germination index (GI) > 50%. Likewise, SBL treatment with P. pastoris followed by VB/CuO/TiO2/visible light photocatalysis resulted in 63.7% COD removal and 46% decolourisation. Moreover, this treatment resulted in the elimination of most unwanted compounds, with the exception of 4-chlorophenol. The Lactuca sativa L seed GI of the post-treated SBL was 40%, indicating moderate phytotoxicity.
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Affiliation(s)
- Claudia M Rivera-Hoyos
- Laboratorio de Microbiología Ambiental y de Suelos, Grupo de Biotecnología Ambiental e Industrial (GBAI) Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, DC, Colombia.
- Laboratorio de Biotecnología Molecular, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, DC, Colombia.
| | - Edwin D Morales-Álvarez
- Laboratorio de Microbiología Ambiental y de Suelos, Grupo de Biotecnología Ambiental e Industrial (GBAI) Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, DC, Colombia
- Laboratorio de Biotecnología Molecular, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, DC, Colombia
- Departamento de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Caldas. Manizales, Caldas, Colombia
| | - Juanita Abelló-Esparza
- Laboratorio de Microbiología Ambiental y de Suelos, Grupo de Biotecnología Ambiental e Industrial (GBAI) Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, DC, Colombia
| | - Daniel F Buitrago-Pérez
- Laboratorio de Microbiología Ambiental y de Suelos, Grupo de Biotecnología Ambiental e Industrial (GBAI) Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, DC, Colombia
| | - Nicolás Martínez-Aldana
- Laboratorio de Microbiología Ambiental y de Suelos, Grupo de Biotecnología Ambiental e Industrial (GBAI) Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, DC, Colombia
| | - Juan C Salcedo-Reyes
- Laboratorio de Películas Delgadas y Nanofotónica, Departamento de Física, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, DC, Colombia
| | - Raúl A Poutou-Piñales
- Laboratorio de Biotecnología Molecular, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, DC, Colombia
| | - Aura M Pedroza-Rodríguez
- Laboratorio de Microbiología Ambiental y de Suelos, Grupo de Biotecnología Ambiental e Industrial (GBAI) Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, DC, Colombia.
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15
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Trespalacios-Rangél AA, Otero W, Arévalo-Galvis A, Poutou-Piñales RA, Rimbara E, Graham DY. Surveillance of Levofloxacin Resistance in Helicobacter pylori Isolates in Bogotá-Colombia (2009-2014). PLoS One 2016; 11:e0160007. [PMID: 27454429 PMCID: PMC4959775 DOI: 10.1371/journal.pone.0160007] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 07/12/2016] [Indexed: 12/20/2022] Open
Abstract
Increased resistance of Helicobacter pylori to clarithromycin and metronidazole has resulted in recommendation to substitute fluoroquinolones for eradication therapy. The aims of the study were to determine the prevalence and changes in primary levofloxacin resistance related to H. pylori gyrA sequences. The study utilized H. pylori strains isolated from patients undergoing gastroscopy in Bogotá, Colombia from 2009 to 2014. Levofloxacin susceptibility was assessed by agar dilution. Mutations in gyrA sequences affecting the quinolone resistance-determining region (QRDR) were evaluated by direct sequencing. Overall, the mean prevalence of primary levofloxacin resistance was 18.2% (80 of 439 samples). Resistance increased from 11.8% (12/102) in 2009 to 27.3% (21/77) in 2014 (p = 0.001). gyrA mutations in levofloxacin resistant strains were present in QRDR positions 87 and 91. The most common mutation was N87I (43.8%, 35/80) followed by D91N (28.8%, 23/80) and N87K (11.3%, 9/80). Levofloxacin resistance increased markedly in Colombia during the six-year study period. Primary levofloxacin resistance was most often mediated by point mutations in gyrA, with N87I being the most common QRDR mutation related to levofloxacin resistance.
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Affiliation(s)
- Alba A. Trespalacios-Rangél
- Grupo de Enfermedades Infecciosas, Departamento de Microbiología, Pontificia Universidad Javeriana, Bogotá, D.C, Colombia
- * E-mail:
| | - William Otero
- Unidad de Gastroenterología, Universidad Nacional de Colombia, Bogotá, D.C, Colombia
| | - Azucena Arévalo-Galvis
- Grupo de Enfermedades Infecciosas, Departamento de Microbiología, Pontificia Universidad Javeriana, Bogotá, D.C, Colombia
| | - Raúl A. Poutou-Piñales
- Grupo de Biotecnología Ambiental e Industrial (GBAI). Departamento de Microbiología, Pontificia Universidad Javeriana, Bogotá, D.C, Colombia
| | - Emiko Rimbara
- Department of Medicine, Michael E. DeBakey Veterans Affairs Medical Center, Houston TX, United States of America
- Baylor College of Medicine, Houston TX, United States of America
| | - David Y. Graham
- Department of Medicine, Michael E. DeBakey Veterans Affairs Medical Center, Houston TX, United States of America
- Baylor College of Medicine, Houston TX, United States of America
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16
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Morales-Álvarez ED, Rivera-Hoyos CM, Landázuri P, Poutou-Piñales RA, Pedroza-Rodríguez AM. Bioinformatic Analysis of the Human Recombinant Iduronate 2-Sulfate Sulfatase. Open Microbiol J 2016; 10:124-32. [PMID: 27335624 PMCID: PMC4899537 DOI: 10.2174/1874285801610010124] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 02/09/2016] [Accepted: 02/13/2016] [Indexed: 12/05/2022] Open
Abstract
Mucopolysaccharidosis type II is a human recessive disease linked to the X chromosome caused by deficiency of lysosomal enzyme Iduronate 2-Sulfate Sulfatase (IDS), which leads to accumulation of glycosaminoglycans in tissues and organs. The human enzyme has been expressed in Escherichia coli and Pichia pastoris in attempt to develop more successful expression systems that allow the production of recombinant IDS for Enzyme Replacement Therapy (ERT). However, the preservation of native signal peptide in the sequence has caused conflicts in processing and recognition in the past, which led to problems in expression and enzyme activity. With the main object being the improvement of the expression system, we eliminate the native signal peptide of human recombinant IDS. The resulting sequence showed two modified codons, thus, our study aimed to analyze computationally the nucleotide sequence of the IDSnh without signal peptide in order to determine the 3D structure and other biochemical properties to compare them with the native human IDS (IDSnh). Results showed that there are no significant differences between both molecules in spite of the two-codon modifications detected in the recombinant DNA sequence.
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Affiliation(s)
- Edwin D Morales-Álvarez
- Research Group on Cardiovascular and Metabolic Diseases (GECAVYME), Faculty of Health Sciences, University of Quindio, Armenia-Quindío, Colombia, South America; Department of Chemistry, Research Group on Genetics, Biodiversity and Ecosystem Management (GEBIOME), Faculty of Exact and Natural Sciences, University of Caldas, Manizales-Caldas, Colombia, South America
| | - Claudia M Rivera-Hoyos
- Research Group on Cardiovascular and Metabolic Diseases (GECAVYME), Faculty of Health Sciences, University of Quindio, Armenia-Quindío, Colombia, South America; Laboratory of Molecular Biotechnology, Group of Environmental and Industrial Biotechnology (GBAI), Department of Microbiology, Faculty of Sciences, Pontificia Universidad Javeriana, Bogotá, D.C. Colombia, South America
| | - Patricia Landázuri
- Research Group on Cardiovascular and Metabolic Diseases (GECAVYME), Faculty of Health Sciences, University of Quindio, Armenia-Quindío, Colombia, South America
| | - Raúl A Poutou-Piñales
- Laboratory of Molecular Biotechnology, Group of Environmental and Industrial Biotechnology (GBAI), Department of Microbiology, Faculty of Sciences, Pontificia Universidad Javeriana, Bogotá, D.C. Colombia, South America
| | - Aura M Pedroza-Rodríguez
- Laboratory of Environmental and Soil Microbiology, Group of Environmental and Industrial Biotechnology (GBAI), Department of Microbiology, Faculty of Sciences, Pontificia Universidad Javeriana, Bogotá, D.C. Colombia, South America
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17
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Manascero-Gómez AR, Bravo-Espinosa M, Solano-Muriel K, Poutou-Piñales RA. Influence of blood donation time intervals on ferritin and hemoglobin concentration. Transfus Apher Sci 2015; 53:213-9. [DOI: 10.1016/j.transci.2015.03.020] [Citation(s) in RCA: 7] [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] [Received: 09/06/2014] [Revised: 03/29/2015] [Accepted: 03/31/2015] [Indexed: 11/27/2022]
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18
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Espejo-Mojica ÁJ, Alméciga-Díaz CJ, Rodríguez A, Mosquera Á, Díaz D, Beltrán L, Díaz S, Pimentel N, Moreno J, Sánchez J, Sánchez OF, Córdoba H, Poutou-Piñales RA, Barrera LA. Human recombinant lysosomal enzymes produced in microorganisms. Mol Genet Metab 2015; 116:13-23. [PMID: 26071627 DOI: 10.1016/j.ymgme.2015.06.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [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: 03/11/2015] [Revised: 06/03/2015] [Accepted: 06/04/2015] [Indexed: 12/30/2022]
Abstract
Lysosomal storage diseases (LSDs) are caused by accumulation of partially degraded substrates within the lysosome, as a result of a function loss of a lysosomal protein. Recombinant lysosomal proteins are usually produced in mammalian cells, based on their capacity to carry out post-translational modifications similar to those observed in human native proteins. However, during the last years, a growing number of studies have shown the possibility to produce active forms of lysosomal proteins in other expression systems, such as plants and microorganisms. In this paper, we review the production and characterization of human lysosomal proteins, deficient in several LSDs, which have been produced in microorganisms. For this purpose, Escherichia coli, Saccharomyces cerevisiae, Pichia pastoris, Yarrowia lipolytica, and Ogataea minuta have been used as expression systems. The recombinant lysosomal proteins expressed in these hosts have shown similar substrate specificities, and temperature and pH stability profiles to those produced in mammalian cells. In addition, pre-clinical results have shown that recombinant lysosomal enzymes produced in microorganisms can be taken-up by cells and reduce the substrate accumulated within the lysosome. Recently, metabolic engineering in yeasts has allowed the production of lysosomal enzymes with tailored N-glycosylations, while progresses in E. coli N-glycosylations offer a potential platform to improve the production of these recombinant lysosomal enzymes. In summary, microorganisms represent convenient platform for the production of recombinant lysosomal proteins for biochemical and physicochemical characterization, as well as for the development of ERT for LSD.
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Affiliation(s)
- Ángela J Espejo-Mojica
- Institute for the Study of Inborn Errors of Metabolism, School of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Carlos J Alméciga-Díaz
- Institute for the Study of Inborn Errors of Metabolism, School of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia.
| | - Alexander Rodríguez
- Institute for the Study of Inborn Errors of Metabolism, School of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia; Chemical Department, School of Science, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Ángela Mosquera
- Institute for the Study of Inborn Errors of Metabolism, School of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Dennis Díaz
- Institute for the Study of Inborn Errors of Metabolism, School of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Laura Beltrán
- Institute for the Study of Inborn Errors of Metabolism, School of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Sergio Díaz
- Institute for the Study of Inborn Errors of Metabolism, School of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Natalia Pimentel
- Institute for the Study of Inborn Errors of Metabolism, School of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Jefferson Moreno
- Institute for the Study of Inborn Errors of Metabolism, School of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Jhonnathan Sánchez
- Institute for the Study of Inborn Errors of Metabolism, School of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Oscar F Sánchez
- School of Chemical Engineering, Purdue University, West Lafayette, IN, USA
| | - Henry Córdoba
- Chemical Department, School of Science, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Raúl A Poutou-Piñales
- Laboratorio de Biotecnología Molecular, Grupo de Biotecnología Ambiental e Industrial (GBAI), School of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Luis A Barrera
- Institute for the Study of Inborn Errors of Metabolism, School of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia
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Zárate-Bonilla LJ, Del Portillo P, Sáenz-Suárez H, Gonzáles-Santos J, Barreto-Sampaio GE, Poutou-Piñales RA, Rey AF, Rey JG. Computational modeling and preliminary iroN, fepA, and cirA gene expression in Salmonella Enteritidis under iron-deficiency-induced conditions. Poult Sci 2014; 93:221-30. [PMID: 24570443 DOI: 10.3382/ps.2012-02993] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Salmonellosis outbreaks in Europe, the United States, and Latin America have been associated with contaminated food derivatives including meat from the poultry industry. Salmonella grown under iron-limiting conditions has the capability to increase concentration of several iron-regulated outer-membrane proteins to augment the acquisition of the metal. These proteins have been proved to have immunogenic properties. Our aim was to increase the relative expression of iroN, fepA, and cirA in Salmonella Enteritidis domestic strain. Furthermore, we proposed a 3-dimensional structure model for each protein to predict and locate antigenic peptides. Our eventual objective is to produce an effective vaccine against regional avian salmonellosis. Two simple factorial designs were carried out to discriminate between 2 nitrogen sources and determine chelating-agent addition timing to augment relative gene expression. Two antigenic peptides located at the external face of each protein and 2 typical domains of iron-regulated outer-membrane proteins, plug and TonB-dep-Rec, were identified from the 3-dimensional models. Tryptone was selected as the best nitrogen source based on growth rate (μx = 0.36 h(-1)) and biomass productivity (Px = 0.9 g•h(-1)•L(-1)) as determined by a general factorial design. Optimum timing for chelating agent addition was in the middle of the log phase, which allowed relative expressions at 4 h of culture. Increase in iroN, fepA, and cirA relative expression was favored by the length of log phase and the addition of chelating agent, which decreased chelating toxicity and enhanced cell growth rate.
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Rivera-Hoyos CM, Morales-Álvarez ED, Poutou-Piñales RA, Pedroza-Rodríguez AM, RodrÍguez-Vázquez R, Delgado-Boada JM. Fungal laccases. FUNGAL BIOL REV 2013. [DOI: 10.1016/j.fbr.2013.07.001] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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21
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Trespalacios AA, Otero W, Caminos JE, Mercado MM, Ávila J, Rosero LE, Arévalo A, Poutou-Piñales RA, Graham DY. Phenotypic and genotypic analysis of clarithromycin-resistant Helicobacter pylori from Bogotá D.C., Colombia. J Microbiol 2013; 51:448-52. [DOI: 10.1007/s12275-013-2465-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Accepted: 02/20/2013] [Indexed: 12/21/2022]
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22
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Morales-Álvarez ED, Rivera-Hoyos CM, Baena-Moncada AM, Landázuri P, Poutou-Piñales RA, Sáenz-Suárez H, Barrera LA, Echeverri-Peña OY. Low-scale expression and purification of an active putative iduronate 2-sulfate sulfatase-Like enzyme from Escherichia coli K12. J Microbiol 2013; 51:213-21. [PMID: 23625223 DOI: 10.1007/s12275-013-2416-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Accepted: 10/31/2012] [Indexed: 10/26/2022]
Abstract
The sulfatase family involves a group of enzymes with a large degree of similarity. Until now, sixteen human sulfatases have been identified, most of them found in lysosomes. Human deficiency of sulfatases generates various genetic disorders characterized by abnormal accumulation of sulfated intermediate compounds. Mucopolysaccharidosis type II is characterized by the deficiency of iduronate 2-sulfate sulfatase (IDS), causing the lysosomal accumulation of heparan and dermatan sulfates. Currently, there are several cases of genetic diseases treated with enzyme replacement therapy, which have generated a great interest in the development of systems for recombinant protein expression. In this work we expressed the human recombinant IDS-Like enzyme (hrIDS-Like) in Escherichia coli DH5α. The enzyme concentration revealed by ELISA varied from 78.13 to 94.35 ng/ml and the specific activity varied from 34.20 to 25.97 nmol/h/mg. Western blotting done after affinity chromatography purification showed a single band of approximately 40 kDa, which was recognized by an IgY polyclonal antibody that was developed against the specific peptide of the native protein. Our 100 ml-shake-flask assays allowed us to improve the enzyme activity seven fold, compared to the E. coli JM109/pUC13-hrIDS-Like system. Additionally, the results obtained in the present study were equal to those obtained with the Pichia pastoris GS1115/pPIC-9-hrIDS-Like system (3 L bioreactor scale). The system used in this work (E. coli DH5α/pGEX-3X-hrIDS-Like) emerges as a strategy for improving protein expression and purification, aimed at recombinant protein chemical characterization, future laboratory assays for enzyme replacement therapy, and as new evidence of active putative sulfatase production in E. coli.
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Affiliation(s)
- Edwin David Morales-Álvarez
- Grupo de Investigación en Enfermedades Cardiovasculares y Metabólicas (GECAVYME), Facultad de Ciencias de la Salud, Universidad del Quindío, Armenia-Quindío, Colombia
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23
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Arévalo-Galvis A, Trespalacios-Rangell AA, Otero W, Mercado-Reyes MM, Poutou-Piñales RA. Prevalence of cagA, vacA, babA2 and iceA genes in H. pylori strains isolated from Colombian patients with functional dyspepsia. Pol J Microbiol 2012; 61:33-40. [PMID: 22708344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] Open
Abstract
The clinical outcome of Helicobacter pylori infection has been particularly associated with virulence genotypes. These genotypes are useful as molecular markers in the identification of patients that are infected and at high risk for developing more severe gastric pathologies. Our main objective was to determine the prevalence of virulence genotypes cagA, vacA, iceA and babA2 of H. pylori, in patients with functional dyspepsia who are infected with the bacteria. H. pylori genotypes babA2 and cagA as well as vacA and iceA allelic variants were identified by PCR in 122 isolates resulting from 79 patients with functional dyspepsia. A high prevalence of genes cagA+ (71%), vacAs1am1 (34%), babA2 (57%) and iceA1 (87%) was found. The most frequent combined genotype found were cagA+/vacAs1am1/babA2+/iceA1 and cagA-/vacAs1am1/babA2+/iceA1, regardless of any family history of gastric cancer or MALT lymphoma. The very virulent genotype cagA+/vacAs1am1/babA2+/iceA1 prevailed in the studied patients with functional dyspepsia. Our results provide information about the prevalence of four of the more important virulent factors and constitute new evidence on the prevalence of the most virulent H. pylori genotype in patients with functional dyspepsia.
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Affiliation(s)
- Azucena Arévalo-Galvis
- Laboratorio de Microbiología Especial, Grupo de Enfermedades Infecciosas, Departamento de Microbiología Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, D.C. Colombia
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Ruiz-Bolivar Z, Neuque-Rico MC, Poutou-Piñales RA, Carrascal-Camacho AK, Mattar S. Antimicrobial susceptibility of Listeria monocytogenes food isolates from different cities in Colombia. Foodborne Pathog Dis 2011; 8:913-9. [PMID: 21492027 DOI: 10.1089/fpd.2010.0813] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
One hundred eight Listeria monocytogenes food isolates from four cities in Colombia and previously confirmed by multiplex polymerase chain reaction were characterized for antimicrobial susceptibility. Isolates were evaluated against 17 antimicrobials contained in the MICroSTREP plus(®)3 panel (MicroScan system). Susceptibility found for ampicillin, amoxicillin/clavulanic acid, and chloramphenicol was 100%, whereas it was 98% for other antimicrobials such as trimethoprim/sulfamethoxazole, 97% for azithromycin, 92% for vancomycin, 90% for erythromycin, 86% for tetracycline, 84% for penicillin, 70% for ciprofloxacin, 57% for rifampin, 56% for meropenem, and 32% for clindamycin. Natural resistance to cephalosporins was confirmed in all cases, and 16% of isolates were nonsusceptible to penicillin. Using Staphylococcus spp. or Enterococcus spp. breakpoints, 48% of isolates displayed multidrug resistances, and the major resistance phenotypes were against rifampin, clindamycin, ciprofloxacin, azithromycin, and erythromycin. Colombian food isolates displayed high resistance to clindamycin, meropenem, rifampin, and ciprofloxacin (30%-65%), and the primary drugs of choice against listeriosis remain effective for most of isolates (84%).
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Affiliation(s)
- Zulema Ruiz-Bolivar
- Laboratorio de Microbiología de Alimentos, Grupo de Biotecnología Ambiental e Industrial, Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, Colombia
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25
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Abstract
BACKGROUND Colonization of the gastric mucosa by Helicobacter pylori is one of the most important causes of acute and chronic gastric pathologies in humans. Achieving the growth of H. pylori in liquid media is of great importance in the development of clinical studies. In this study, we developed a sequential optimization strategy based on statistical models to improve the conditions of liquid culture of H. pylori. MATERIALS AND METHODS Four statistical models were sequentially used. First, a Box-Behnken design was used to select the best process conditions (shaking speed, inoculum concentration, and final volume of culture). Secondly, a general factorial design was used to evaluate the influence of adding gel blocks or gel beads (shape and composition). Then a D-optimal reduce design was carried out to allow the selection of the most influential factors in increasing the cell concentration (culture media components). Finally, another Box-Behnken design was used to optimize the concentration of the culture media components previously selected. RESULTS After 12 hours of liquid culture a concentration of 25 x 10(8) cells per mL (9.4 log(10) cells per mL) of H. pylori was obtained, compared with a predicted 32 x 10(8) (9.5 log(10) cells per mL), which means between 1 and 5 log(10) units higher than some previous reports. CONCLUSIONS The sequential statistical approach increased the planktonic H. pylori cell culture. The final culture media and conditions were: Brain Heart Infusion, blood agarose (1.5% w/v), lamb's blood (3.18% v/v), DENT (0.11% v/v), and Vitox (0.52% v/v) at 60 rpm and 37 degrees C with filtered CO2 (5% v/v) bubbled directly into the culture media in a final volume of 76.22 mL.
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Affiliation(s)
- Rocio Duque-Jamaica
- Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Carrera de Microbiología Industrial, Cra. 7 N degrees 40-62. Bogotá, DC, Colombia
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26
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Poutou-Piñales RA, Vanegas Niño A, Landázuri P, Sáenz H, Lareo L, Echeverri Peña OY, Barrera Avellaneda LA. Human sulfatase transiently and functionally active expressed in E. coli K12. ELECTRON J BIOTECHN 2010. [DOI: 10.2225/vol13-issue3-fulltext-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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