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Díaz-Dinamarca DA, Jerias JI, Soto DA, Soto JA, Díaz NV, Leyton YY, Villegas RA, Kalergis AM, Vásquez AE. The Optimisation of the Expression of Recombinant Surface Immunogenic Protein of Group B Streptococcus in Escherichia coli by Response Surface Methodology Improves Humoral Immunity. Mol Biotechnol 2018; 60:215-225. [PMID: 29442290 DOI: 10.1007/s12033-018-0065-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Group B Streptococcus (GBS) is the leading cause of neonatal meningitis and a common pathogen in livestock and aquaculture industries around the world. Conjugate polysaccharide and protein-based vaccines are under development. The surface immunogenic protein (SIP) is a conserved protein in all GBS serotypes and has been shown to be a good target for vaccine development. The expression of recombinant proteins in Escherichia coli cells has been shown to be useful in the development of vaccines, and the protein purification is a factor affecting their immunogenicity. The response surface methodology (RSM) and Box-Behnken design can optimise the performance in the expression of recombinant proteins. However, the biological effect in mice immunised with an immunogenic protein that is optimised by RSM and purified by low-affinity chromatography is unknown. In this study, we used RSM for the optimisation of the expression of the rSIP, and we evaluated the SIP-specific humoral response and the property to decrease the GBS colonisation in the vaginal tract in female mice. It was observed by NI-NTA chromatography that the RSM increases the yield in the expression of rSIP, generating a better purification process. This improvement in rSIP purification suggests a better induction of IgG anti-SIP immune response and a positive effect in the decreased GBS intravaginal colonisation. The RSM applied to optimise the expression of recombinant proteins with immunogenic capacity is an interesting alternative in the evaluation of vaccines in preclinical phase, which could improve their immune response.
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Affiliation(s)
- Diego A Díaz-Dinamarca
- Sección Biotecnología, Instituto de Salud Pública de Chile, Santiago, Chile.,Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Millenium Institute on Immunology and Immunotherapy, Santiago, Chile
| | - José I Jerias
- Sección Biotecnología, Instituto de Salud Pública de Chile, Santiago, Chile
| | - Daniel A Soto
- Sección Biotecnología, Instituto de Salud Pública de Chile, Santiago, Chile
| | - Jorge A Soto
- Sección Biotecnología, Instituto de Salud Pública de Chile, Santiago, Chile.,Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Millenium Institute on Immunology and Immunotherapy, Santiago, Chile
| | - Natalia V Díaz
- Sección Biotecnología, Instituto de Salud Pública de Chile, Santiago, Chile
| | - Yessica Y Leyton
- Sección Biotecnología, Instituto de Salud Pública de Chile, Santiago, Chile
| | - Rodrigo A Villegas
- Departamento de Asuntos Científicos, Instituto de Salud Pública de Chile, Santiago, Chile
| | - Alexis M Kalergis
- Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Millenium Institute on Immunology and Immunotherapy, Santiago, Chile.,Departamento de Endocrinología, Facultad de Medicina Pontificia, Universidad Católica de Chile, Santiago, Chile
| | - Abel E Vásquez
- Sección Biotecnología, Instituto de Salud Pública de Chile, Santiago, Chile. .,Facultad de Ciencia, Universidad San Sebastián, Providencia, Santiago, Chile.
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Larentis AL, Nicolau JFMQ, Esteves GDS, Vareschini DT, de Almeida FVR, dos Reis MG, Galler R, Medeiros MA. Evaluation of pre-induction temperature, cell growth at induction and IPTG concentration on the expression of a leptospiral protein in E. coli using shaking flasks and microbioreactor. BMC Res Notes 2014; 7:671. [PMID: 25252618 PMCID: PMC4190419 DOI: 10.1186/1756-0500-7-671] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Accepted: 08/27/2014] [Indexed: 11/23/2022] Open
Abstract
Background Leptospirosis is a zoonose that is increasingly endemic in built-up areas, especially where there are communities living in precarious housing with poor or non-existent sanitation infrastructure. Leptospirosis can kill, for its symptoms are easily confused with those of other diseases. As such, a rapid diagnosis is required so it can be treated effectively. A test for leptospirosis diagnosis using Leptospira Immunoglobulin-like (Lig) proteins is currently at final validation at Fiocruz. Results In this work, the process for expression of LigB (131-645aa) in E. coli BL21 (DE3)Star™/pAE was evaluated. No significant difference was found for the experiments at two different pre-induction temperatures (28°C and 37°C). Then, the strain was cultivated at 37°C until IPTG addition, followed by induction at 28°C, thereby reducing the overall process time. Under this condition, expression was assessed using central composite design for two variables: cell growth at which LigB (131-645aa) was induced (absorbance at 600 nm between 0.75 and 2.0) and inducer concentration (0.1 mM to 1 mM IPTG). Both variables influenced cell growth and protein expression. Induction at the final exponential growth phase in shaking flasks with Absind
= 2.0 yielded higher cell concentrations and LigB (131-645aa) productivities. IPTG concentration had a negative effect and could be ten-fold lower than the concentration commonly used in molecular biology (1 mM), while keeping expression at similar levels and inducing less damage to cell growth. The expression of LigB (131-645aa) was associated with cell growth. The induction at the end of the exponential phase using 0.1 mM IPTG at 28°C for 4 h was also performed in microbioreactors, reaching higher cell densities and 970 mg/L protein. LigB (131-645aa) was purified by nickel affinity chromatography with 91% homogeneity. Conclusions It was possible to assess the effects and interactions of the induction variables on the expression of soluble LigB (131-645aa) using experimental design, with a view to improving process productivity and reducing the production costs of a rapid test for leptospirosis diagnosis.
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Affiliation(s)
- Ariane Leites Larentis
- Fiocruz, Bio-Manguinhos, Vice Directory of Technological Development, Laboratory of Recombinant Technologies (LATER), Av, Brasil 4365, Manguinhos, Rio de Janeiro, RJ 21,040-360, Brazil.
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Yu P, Yan Y, Gu Q, Wang X. Codon optimisation improves the expression of Trichoderma viride sp. endochitinase in Pichia pastoris. Sci Rep 2013; 3:3043. [PMID: 24154717 PMCID: PMC3807108 DOI: 10.1038/srep03043] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Accepted: 09/24/2013] [Indexed: 11/25/2022] Open
Abstract
The mature cDNA of endochitinase from Trichoderma viride sp. was optimised based on the codon bias of Pichia pastoris GS115 and synthesised by successive PCR; the sequence was then transformed into P. pastoris GS115 via electroporation. The transformant with the fastest growth rate on YPD plates containing 4 mg/mL G418 was screened and identified. This transformant produced 23.09 U/mL of the recombinant endochitinase, a 35% increase compared to the original strain bearing the wild-type endochitinase cDNA. The recombinant endochitinase was sequentially purified by ammonia sulphate precipitation, DE-52 anion-exchange chromatography and Sephadex G-100 size-exclusion chromatography. Thin-layer chromatography indicated that the purified endochitinase could hydrolyse chito-oligomers or colloidal chitin to generate diacetyl-chitobiose (GlcNAc)₂ as the main product. This study demonstrates (1) a means for high expression of Trichoderma viride sp. endochitinase in P. pastoris using codon optimisation and (2) the preparation of chito-oligomers using endochitinase.
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Affiliation(s)
- Ping Yu
- College of Food Science and Biotechnology, Zhejiang Gongshang University, 149 Jiaogong Road, Hangzhou 310035, Zhejiang Province, People's Republic of China
| | - Yuan Yan
- College of Food Science and Biotechnology, Zhejiang Gongshang University, 149 Jiaogong Road, Hangzhou 310035, Zhejiang Province, People's Republic of China
| | - Qing Gu
- College of Food Science and Biotechnology, Zhejiang Gongshang University, 149 Jiaogong Road, Hangzhou 310035, Zhejiang Province, People's Republic of China
| | - Xiangyang Wang
- College of Food Science and Biotechnology, Zhejiang Gongshang University, 149 Jiaogong Road, Hangzhou 310035, Zhejiang Province, People's Republic of China
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Excretory overexpression of Paenibacillus pabuli US132 cyclodextrin glucanotransferase (CGTase) in Escherichia coli: gene cloning and optimization of the culture conditions using experimental design. Biologia (Bratisl) 2011. [DOI: 10.2478/s11756-011-0122-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Einsfeldt K, Severo Júnior JB, Corrêa Argondizzo AP, Medeiros MA, Alves TLM, Almeida RV, Larentis AL. Cloning and expression of protease ClpP from Streptococcus pneumoniae in Escherichia coli: study of the influence of kanamycin and IPTG concentration on cell growth, recombinant protein production and plasmid stability. Vaccine 2011; 29:7136-43. [PMID: 21651937 DOI: 10.1016/j.vaccine.2011.05.073] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Infections caused by Streptococcus pneumoniae are one of the main causes of death around the world. In order to address this problem, investigations are being made into the development of a protein-based vaccine. The aims of this study were to clone and express ClpP, a protein from S. pneumoniae serotype 14 in Escherichia coli, to optimize protein expression by using experimental design and to study plasmid segregation in the system. ClpP was cloned into the pET28b vector and expressed in E. coli BL21 Star (DE3). Protein expression was optimized by using central composite design, varying the inducer (IPTG) and kanamycin concentration, with a subsequent analysis being made of the concentration of heterologous protein, cell growth and the fraction of plasmid-bearing cells. In all the experiments, approximately the same concentration of ClpP was expressed in its soluble form, with a mean of 240.4mg/L at the center point. Neither the IPTG concentration nor the kanamycin concentration was found to have any statistically significant influence on protein expression. Also, higher IPTG concentrations were found to have a negative effect on cell growth and plasmid stability. Plasmid segregation was identified in the system under all the concentrations studied. Using statistical analysis, it was possible to ascertain that the procedures for determining plasmid stability (serial dilution and colony counting) were reproducible. It was concluded that the inducer concentration could be reduced tenfold and the antibiotic eliminated from the system without significantly affecting expression levels and with the positive effect of reducing costs.
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Affiliation(s)
- Karen Einsfeldt
- Programa de Engenharia Química - COPPE - Universidade Federal do Rio de Janeiro (UFRJ) - Av. Horácio Macedo 2030, Bloco G, Sala 115 - Centro de Tecnologia (CT) - Cidade Universitária, Ilha do Fundão, Caixa Postal 68502 - 21941-972, Rio de Janeiro, RJ, Brazil.
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Larentis AL, Sampaio HDCC, Martins OB, Rodrigues MI, Alves TLM. Influence of induction conditions on the expression of carbazole dioxygenase components (CarAa, CarAc, and CarAd) from Pseudomonas stutzeri in recombinant Escherichia coli using experimental design. J Ind Microbiol Biotechnol 2010; 38:1045-54. [PMID: 20953895 DOI: 10.1007/s10295-010-0879-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2010] [Accepted: 09/15/2010] [Indexed: 10/18/2022]
Abstract
Carbazole 1,9a-dioxygenase (CarA), the first enzyme in the carbazole degradation pathway used by Pseudomonas sp., was expressed in E. coli under different conditions defined by experimental design. This enzyme depends on the coexistence of three components containing [2Fe-2S] clusters: CarAa, CarAc, and CarAd. The catalytic site is present in CarAa. The genes corresponding to components of carbazole 1,9a-dioxygenase from P. stutzeri were cloned and expressed by salt induction in E. coli BL21-SI (a host that allows the enhancement of overexpressed proteins in the soluble fraction), using the vector pDEST™14. The expression of these proteins was performed under different induction conditions (cell concentration, temperature, and time), with the help of two-level factorial design. Cell concentration at induction (measured by absorbance at 600 nm) was tested at 0.5 and 0.8. After salt induction, expression was performed at 30 and 37°C, for 4 h and 24 h. Protein expression was evaluated by densitometry analysis. Expression of CarAa was enhanced by induction at a lower cell concentration and temperature and over a longer time, according to the analysis of the experimental design results. The results were validated at Abs (ind) = 0.3, 25°C, and 24 h, at which CarAa expression was three times higher than under the standard condition. The behavior of CarAc and CarAd was the inverse, with the best co-expression condition tested being the standard one (Abs (ind) = 0.5, T = 37°C, and t = 4 h). The functionality of the proteins expressed in E. coli was confirmed by the degradation of 20 ppm carbazole.
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Affiliation(s)
- Ariane Leites Larentis
- Laboratório de Bioprocessos, Universidade Federal do Rio de Janeiro-UFRJ, Centro de Tecnologia (CT), G115, Cidade Universitária, Ilha do Fundão, Caixa Postal 68502, Rio de Janeiro, RJ, 21945-970, Brazil.
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Lee SG, Koh HY, Han SJ, Park H, Na DC, Kim IC, Lee HK, Yim JH. Expression of recombinant endochitinase from the Antarctic bacterium, Sanguibacter antarcticus KOPRI 21702 in Pichia pastoris by codon optimization. Protein Expr Purif 2010; 71:108-14. [PMID: 20100576 DOI: 10.1016/j.pep.2010.01.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2009] [Revised: 12/23/2009] [Accepted: 01/19/2010] [Indexed: 11/28/2022]
Abstract
An endochitinase was previously purified and the gene was cloned from the psychrophilic Antarctic bacterium, Sanguibacter antarcticus (KCTC 13143). In the present study, recombinant endochitinase, rChi21702, was expressed using a yeast expression system (Pichia pastoris) and codon optimization. The expressed rChi21702 was purified by Phenyl-Sepharose column chromatography. Optimal expression yielded 1-mg purified enzyme from 1-L bioreactor culture. When p-NP-(GlcNAc)(2) was used as a substrate, the specific activity of the enzyme was determined to be 20U/mg. In vitro assays and thin-layer chromatography demonstrated that the recombinant enzyme has endochitinase activity that produces diacetyl-chitobiose as a dominant end product when chitooligomers, colloidal chitin, and the chromogenic p-NP-(GlcNAc)(2) are used as substrates. Optimal activity for rChi21702 was observed at 37 degrees C and a pH of 7.6. Interestingly, rChi21702 exhibited 63% of optimal activity at 10 degrees C and 44% activity at 0 degrees C. Taken together, the results indicate that rChi21702 has psychrotolerant endochitinase activity even after recombinant expression in yeast cells.
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Affiliation(s)
- Sung Gu Lee
- Polar BioCenter, Korea Polar Research Institute, Incheon 406-840, South Korea
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Molecular cloning, sequence analysis, expression and characterization of the endochitinase gene from Trichoderma sp. in Escherichia coli BL21. World J Microbiol Biotechnol 2008. [DOI: 10.1007/s11274-008-9772-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Balderas Hernández VE, Paz Maldonado LMT, Medina Rivero E, Barba de la Rosa AP, Ordoñez Acevedo LG, De León Rodríguez A. Optimization of human interferon gamma production in Escherichia coli by response surface methodology. BIOTECHNOL BIOPROC E 2008. [DOI: 10.1007/s12257-007-0126-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Maldonado LMTP, Hernández VEB, Rivero EM, Barba de la Rosa AP, Flores JLF, Acevedo LGO, De León Rodríguez A. Optimization of culture conditions for a synthetic gene expression in Escherichia coli using response surface methodology: The case of human interferon beta. ACTA ACUST UNITED AC 2007; 24:217-22. [PMID: 17126075 DOI: 10.1016/j.bioeng.2006.10.001] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2006] [Revised: 09/30/2006] [Accepted: 10/13/2006] [Indexed: 10/24/2022]
Abstract
A human interferon beta (hINF-beta) synthetic gene was optimized and expressed in Escherichia coli BL21-SI using a vector with the T7 promoter. To determine the best culture conditions such as culture medium, temperature, cell density and inducer concentration, we used the response surface methodology and a Box-Behnken design to get the highest hINF-beta production. The maximum hINF-beta production of 61 mg l(-1) was attained using minimum medium and the following predicted optimal conditions: temperature of 32.5 degrees C, cell density of 0.64, and inducer concentration of 0.30 M NaCl. This is the first report showing the successful performance of the BL21-SI system in a minimum medium. The response surface methodology is effective for the optimization of recombinant protein production using synthetic genes.
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Affiliation(s)
- Luz M T Paz Maldonado
- Division of Molecular Biology, Institute for Scientific and Technological Research of San Luis Potosi, Apartado Postal 3-74, Tangamanga, 78231 San Luis Potosi, S.L.P., Mexico
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Lo PK, Hassan O, Ahmad A, Mahadi NM, Illias RM. Excretory over-expression of Bacillus sp. G1 cyclodextrin glucanotransferase (CGTase) in Escherichia coli: Optimization of the cultivation conditions by response surface methodology. Enzyme Microb Technol 2007. [DOI: 10.1016/j.enzmictec.2006.09.020] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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