1
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Jaswal AS, Elangovan R, Mishra S. Optimization of dilution rate and mixed carbon feed for continuous production of recombinant plant sucrose:sucrose 1-fructosyltransferase in Komagataella phaffii. Bioprocess Biosyst Eng 2024:10.1007/s00449-024-03045-w. [PMID: 38904715 DOI: 10.1007/s00449-024-03045-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Accepted: 06/09/2024] [Indexed: 06/22/2024]
Abstract
The trisaccharide 1-kestose, a major constituent of commercial fructooligosaccharide (FOS) formulations, shows a superior prebiotic effect compared to higher-chain FOS. The plant sucrose:sucrose 1-fructosyltransferases (1-SST) are extensively used for selective synthesis of lower chain FOS. In this study, enhanced recombinant (r) 1-SST production was achieved in Komagataella phaffii (formerly Pichia pastoris) containing three copies of a codon-optimized Festuca arundinacea 1-SST gene. R1-SST production reached 47 U/mL at the shake-flask level after a 96-h methanol induction phase. A chemostat-based strain characterization methodology was adopted to assess the influence of specific growth rate (µ) on cell-specific r1-SST productivity (Qp) and cell-specific oxygen uptake rate (Qo) under two different feeding strategies across dilution rates from 0.02 to 0.05 h-1. The methanol-sorbitol co-feeding strategy significantly reduced Qo by 46 ± 2.4% compared to methanol-only feeding without compromising r1-SST productivity. Based on the data, a dilution rate of 0.025 h-1 was applied for continuous cultivation of recombinant cells to achieve a sustained r1-SST productivity of 5000 ± 64.4 U/L/h for 15 days.
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Affiliation(s)
- Avijeet S Jaswal
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, Hauz-Khas, New-Delhi, 110016, India
| | - Ravikrishnan Elangovan
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, Hauz-Khas, New-Delhi, 110016, India
| | - Saroj Mishra
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, Hauz-Khas, New-Delhi, 110016, India.
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2
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Allampalli SSP, Sivaprakasam S. Unveiling the potential of specific growth rate control in fed-batch fermentation: bridging the gap between product quantity and quality. World J Microbiol Biotechnol 2024; 40:196. [PMID: 38722368 DOI: 10.1007/s11274-024-03993-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Accepted: 04/18/2024] [Indexed: 05/18/2024]
Abstract
During the epoch of sustainable development, leveraging cellular systems for production of diverse chemicals via fermentation has garnered attention. Industrial fermentation, extending beyond strain efficiency and optimal conditions, necessitates a profound understanding of microorganism growth characteristics. Specific growth rate (SGR) is designated as a key variable due to its influence on cellular physiology, product synthesis rates and end-product quality. Despite its significance, the lack of real-time measurements and robust control systems hampers SGR control strategy implementation. The narrative in this contribution delves into the challenges associated with the SGR control and presents perspectives on various control strategies, integration of soft-sensors for real-time measurement and control of SGR. The discussion highlights practical and simple SGR control schemes, suggesting their seamless integration into industrial fermenters. Recommendations provided aim to propose new algorithms accommodating mechanistic and data-driven modelling for enhanced progress in industrial fermentation in the context of sustainable bioprocessing.
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Affiliation(s)
- Satya Sai Pavan Allampalli
- BioPAT Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Assam, 781039, India
| | - Senthilkumar Sivaprakasam
- BioPAT Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Assam, 781039, India.
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3
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Raheja Y, Singh V, Sharma G, Tsang A, Chadha BS. A thermostable and inhibitor resistant β-glucosidase from Rasamsonia emersonii for efficient hydrolysis of lignocellulosics biomass. Bioprocess Biosyst Eng 2024; 47:567-582. [PMID: 38470501 DOI: 10.1007/s00449-024-02988-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 02/20/2024] [Indexed: 03/14/2024]
Abstract
The present study reports a highly thermostable β-glucosidase (GH3) from Rasamsonia emersonii that was heterologously expressed in Pichia pastoris. Extracellular β-glucosidase was purified to homogeneity using single step affinity chromatography with molecular weight of ~ 110 kDa. Intriguingly, the purified enzyme displayed high tolerance to inhibitors mainly acetic acid, formic acid, ferulic acid, vanillin and 5-hydroxymethyl furfural at concentrations exceeding those present in acid steam pretreated rice straw slurry used for hydrolysis and subsequent fermentation in 2G ethanol plants. Characteristics of purified β-glucosidase revealed the optimal activity at 80 °C, pH 5.0 and displayed high thermostability over broad range of temperature 50-70 °C with maximum half-life of ~ 60 h at 50 °C, pH 5.0. The putative transglycosylation activity of β-glucosidase was appreciably enhanced in the presence of methanol as an acceptor. Using the transglycosylation ability of β-glucosidase, the generated low cost mixed glucose disaccharides resulted in the increased induction of R. emersonii cellulase under submerged fermentation. Scaling up the recombinant protein production at fermenter level using temporal feeding approach resulted in maximal β-glucosidase titres of 134,660 units/L. Furthermore, a developed custom made enzyme cocktail consisting of cellulase from R. emersonii mutant M36 supplemented with recombinant β-glucosidase resulted in significantly enhanced hydrolysis of pretreated rice straw slurry from IOCL industries (India). Our results suggest multi-faceted β-glucosidase from R. emersonii can overcome obstacles mainly high cost associated enzyme production, inhibitors that impair the sugar yields and thermal inactivation of enzyme.
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Affiliation(s)
- Yashika Raheja
- Department of Microbiology, Guru Nanak Dev University, Amritsar, 143005, Punjab, India
| | - Varinder Singh
- Department of Microbiology, Guru Nanak Dev University, Amritsar, 143005, Punjab, India
| | - Gaurav Sharma
- Department of Microbiology, Guru Nanak Dev University, Amritsar, 143005, Punjab, India
| | - Adrian Tsang
- Center for Structural and Functional Genomics, Concordia University, 7141 Sherbrooke Street West, Montreal, QC, H4B 1R6, Canada
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4
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Joseph JA, Akkermans S, Van Impe JF. Macroscopic modeling of the growth and substrate consumption of wild type and genetically modified Pichia pastoris. Biotechnol J 2023; 18:e2300164. [PMID: 37688402 DOI: 10.1002/biot.202300164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 08/15/2023] [Accepted: 08/31/2023] [Indexed: 09/10/2023]
Abstract
Pichia pastoris is a popular yeast platform to generate several industrially relevant products which have applications in a wide range of sectors. The complexities in the processes due to the addition of a foreign gene are not widely explored. Since these complexities can be dependent on the strain characteristics, promoter, and type of protein produced, it is vital to investigate the growth and substrate consumption patterns of the host to facilitate customized process optimization. In this study, the growth rates of P. pastoris GS115 wild type (WT) and genetically modified (GM) strains grown on glycerol and methanol in batch cultivation mode were estimated and the model providing the best representation of the true growth kinetics based on substrate consumption was identified. It was observed that the growth of P. pastoris exhibits Haldane kinetics on glycerol rather than the most commonly used Monod kinetics due to the inability of the latter to describe growth inhibition at high concentrations of glycerol. Whereas, the cardinal parameter model, a newly proposed model for this application, was found to be the best fitting to describe the growth of P. pastoris on methanol due to its ability to describe methanol toxicity. Interestingly, the findings from this study concluded that in both substrates, the genetically engineered strain exhibited a higher growth rate compared to the WT strain. Such an observation has not been established yet in other published works, indicating an opportunity to further optimize the carbon source feeding strategies when the host is grown in fed-batch mode.
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Affiliation(s)
- Jewel Ann Joseph
- BioTeC+, Chemical and Biochemical Process Technology and Control, Department of Chemical Engineering, KU Leuven, Ghent, Belgium
| | - Simen Akkermans
- BioTeC+, Chemical and Biochemical Process Technology and Control, Department of Chemical Engineering, KU Leuven, Ghent, Belgium
| | - Jan F Van Impe
- BioTeC+, Chemical and Biochemical Process Technology and Control, Department of Chemical Engineering, KU Leuven, Ghent, Belgium
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5
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Yang W, Zhou J, Gu Q, Harindintwali JD, Yu X, Liu X. Combinatorial Enzymatic Catalysis for Bioproduction of Ginsenoside Compound K. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:3385-3397. [PMID: 36780449 DOI: 10.1021/acs.jafc.2c08773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Ginsenoside compound K (CK) is an emerging functional food or pharmaceutical product. To date, there are still challenges to exploring effective catalytic enzymes for enzyme-catalyzed manufacturing processes and establishing enzyme-catalyzed processes. Herein, we identified three ginsenoside hydrolases BG07 (glucoamylase), BG19 (β-glucosidase), and BG23 (β-glucosidase) from Aspergillus tubingensis JE0609 by transcriptome analysis and peptide mass fingerprinting. Among them, BG23 was expressed in Komagataella phaffii with a high volumetric activity of 235.73 U mL-1 (pNPG). Enzymatic property studies have shown that BG23 is an acidic (pH adaptation range of 4.5-7.0) and mesophilic (thermostable < 50 °C) enzyme. Moreover, a one-pot combinatorial enzyme-catalyzed strategy based on BG23 and BGA35 (β-galactosidase from Aspergillus oryzae) was established, with a high CK yield of 396.7 mg L-1 h-1. This study explored the ginsenoside hydrolases derived from A. tubingensis at the molecular level and provided a reference for the efficient production of CK.
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Affiliation(s)
- Wenhua Yang
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214000, Jiangsu, China
| | - Jianli Zhou
- Guizhou Province Key Laboratory of Fermentation Engineering and Biopharmacy, School of Liquor and Food Engineering, Guizhou University, Guiyang 550003, Guizhou, China
| | - Qiuya Gu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214000, Jiangsu, China
| | - Jean Damascene Harindintwali
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, Jiangsu, China
| | - Xiaobin Yu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214000, Jiangsu, China
| | - Xiaobo Liu
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
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Shen D, He X, Weng P, Liu Y, Wu Z. A review of yeast: High cell-density culture, molecular mechanisms of stress response and tolerance during fermentation. FEMS Yeast Res 2022; 22:6775076. [PMID: 36288242 DOI: 10.1093/femsyr/foac050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 09/21/2022] [Accepted: 10/22/2022] [Indexed: 01/07/2023] Open
Abstract
Yeast is widely used in the fermentation industry, and the major challenges in fermentation production system are high capital cost and low reaction rate. High cell-density culture is an effective method to increase the volumetric productivity of the fermentation process, thus making the fermentation process faster and more robust. During fermentation, yeast is subjected to various environmental stresses, including osmotic, ethanol, oxidation, and heat stress. To cope with these stresses, yeast cells need appropriate adaptive responses to acquire stress tolerances to prevent stress-induced cell damage. Since a single stressor can trigger multiple effects, both specific and nonspecific effects, general and specific stress responses are required to achieve comprehensive protection of cells. Since all these stresses disrupt protein structure, the upregulation of heat shock proteins and trehalose genes is induced when yeast cells are exposed to stress. A better understanding of the research status of yeast HCDC and its underlying response mechanism to various stresses during fermentation is essential for designing effective culture control strategies and improving the fermentation efficiency and stress resistance of yeast.
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Affiliation(s)
- Dongxu Shen
- Department of Food Science and Engineering, Ningbo University, Ningbo 315211, P.R. China
| | - Xiaoli He
- Department of Food Science and Engineering, Ningbo University, Ningbo 315211, P.R. China
| | - Peifang Weng
- Department of Food Science and Engineering, Ningbo University, Ningbo 315211, P.R. China
| | - Yanan Liu
- Department of Food Science and Engineering, Ningbo University, Ningbo 315211, P.R. China
| | - Zufang Wu
- Department of Food Science and Engineering, Ningbo University, Ningbo 315211, P.R. China
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7
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Advances in Komagataella phaffii Engineering for the Production of Renewable Chemicals and Proteins. FERMENTATION 2022. [DOI: 10.3390/fermentation8110575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The need for a more sustainable society has prompted the development of bio-based processes to produce fuels, chemicals, and materials in substitution for fossil-based ones. In this context, microorganisms have been employed to convert renewable carbon sources into various products. The methylotrophic yeast Komagataella phaffii has been extensively used in the production of heterologous proteins. More recently, it has been explored as a host organism to produce various chemicals through new metabolic engineering and synthetic biology tools. This review first summarizes Komagataella taxonomy and diversity and then highlights the recent approaches in cell engineering to produce renewable chemicals and proteins. Finally, strategies to optimize and develop new fermentative processes using K. phaffii as a cell factory are presented and discussed. The yeast K. phaffii shows an outstanding performance for renewable chemicals and protein production due to its ability to metabolize different carbon sources and the availability of engineering tools. Indeed, it has been employed in producing alcohols, carboxylic acids, proteins, and other compounds using different carbon sources, including glycerol, glucose, xylose, methanol, and even CO2.
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8
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β-glucosidase production by recombinant Pichia pastoris strain Y1433 under optimal feed profiles of fed-batch cultivation. Folia Microbiol (Praha) 2022; 68:245-256. [PMID: 36241938 DOI: 10.1007/s12223-022-01008-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 10/02/2022] [Indexed: 11/04/2022]
Abstract
Pichia pastoris, a methylotrophic yeast, is known to be an efficient host for heterologous proteins production. In this study, a recombinant P. pastoris Y11430 was found better for β-glucosidase activity in comparison with a wild type P. pastoris Y11430 strain, and thereby, subjected to methanol intermittent feed profiling for β-glucosidase production. The results showed that at 72 h of cultivation time, the cultures with 16.67% and 33.33% methanol feeding with constant rate could produce the total dry cell weight of 52.23 and 118.55 g/L, respectively, while the total mutant β-glucosidase activities were 1001.59 and 3259.82 units, respectively. The methanol feeding profile was kept at 33% with three methanol feeding strategies such as constant feed rate, linear feed rate, and exponential feed rate which were used in fed-batch fermentation. At 60 h of cultivation, the highest total mutant β-glucosidase activity was 2971.85 units for exponential feed rate culture. On the other hand, total mutant β-glucosidase activity of the constant feed rate culture and linear feed rate culture were 1682.25 and 1975.43 units, respectively. The kinetic parameters of exponential feed rate culture were specific growth rate on glycerol 0.228/h, specific growth of methanol 0.061/h, maximum total dry cell weight 196.73 g, yield coefficient biomass per methanol ([Formula: see text]) 0.57 gcell/gMeOH, methanol consumption rate ([Formula: see text]) 5.76 gMeOH/h, and enzyme productivity ([Formula: see text]) 75.96 units/h. In conclusion, higher cell mass and β- glucosidase activity were produced under exponential feed rate than constant and linear feed rates.
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9
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Prates JWO, Xisto MF, Rodrigues JVDS, Colombari JPC, Meira JMA, Dias RS, da Silva CC, de Paula ESO. Zika Virus Envelope Protein Domain III Produced in K. phaffii Has the Potential for Diagnostic Applications. Diagnostics (Basel) 2022; 12:diagnostics12051198. [PMID: 35626353 PMCID: PMC9139701 DOI: 10.3390/diagnostics12051198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/29/2022] [Accepted: 05/09/2022] [Indexed: 11/16/2022] Open
Abstract
Zika virus (ZIKV) represents a global human health threat and it is related to severe diseases such as congenital Zika syndrome (CZS) and Guillain-Barré syndrome (GBS). There is no vaccine available nor specific antiviral treatment, so developing sensitive, specific, and low-cost diagnostic tests is necessary. Thus, the objective of this work was to produce the Zika virus envelope protein domain III (ZIKV-EDIII) in Komagataella phaffii KM71H and evaluate its potential for diagnostic applications. After the K. phaffii had been transformed with the pPICZαA-ZIKV-EDIII vector, an SDS-PAGE and Western Blot were performed to characterize the recombinant protein and an ELISA to evaluate the antigenic potential. The results show that ZIKV-EDIII was produced in the expected size, with a good purity grade and yield of 2.58 mg/L. The receiver operating characteristic (ROC) curve showed 90% sensitivity and 87.5% specificity for IgM, and 93.33% sensitivity and 82.76% specificity for IgG. The ZIKV-EDIII protein was efficiently produced in K. phaffi, and it has the potential for diagnostic applications.
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Affiliation(s)
- John Willians Oliveira Prates
- Department of Microbiology, Federal University of Viçosa, Viçosa 36570-900, Minas Gerais, Brazil; (J.W.O.P.); (J.V.d.S.R.); (C.C.d.S.)
| | - Mariana Fonseca Xisto
- Laboratory of Molecular Immunovirology, Department of General Biology, Federal University of Viçosa, Viçosa 36570-900, Minas Gerais, Brazil; (M.F.X.); (R.S.D.)
| | - João Vitor da Silva Rodrigues
- Department of Microbiology, Federal University of Viçosa, Viçosa 36570-900, Minas Gerais, Brazil; (J.W.O.P.); (J.V.d.S.R.); (C.C.d.S.)
| | - João Pedro Cruz Colombari
- Department of Medicine and Nursing, Federal University of Viçosa, Viçosa 36570-900, Minas Gerais, Brazil; (J.P.C.C.); (J.M.A.M.)
| | - Júlia Maria Alves Meira
- Department of Medicine and Nursing, Federal University of Viçosa, Viçosa 36570-900, Minas Gerais, Brazil; (J.P.C.C.); (J.M.A.M.)
| | - Roberto Sousa Dias
- Laboratory of Molecular Immunovirology, Department of General Biology, Federal University of Viçosa, Viçosa 36570-900, Minas Gerais, Brazil; (M.F.X.); (R.S.D.)
| | - Cynthia Canedo da Silva
- Department of Microbiology, Federal University of Viçosa, Viçosa 36570-900, Minas Gerais, Brazil; (J.W.O.P.); (J.V.d.S.R.); (C.C.d.S.)
| | - e Sérgio Oliveira de Paula
- Laboratory of Molecular Immunovirology, Department of General Biology, Federal University of Viçosa, Viçosa 36570-900, Minas Gerais, Brazil; (M.F.X.); (R.S.D.)
- Correspondence: ; Tel.: +55-31-36125015
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Bustos C, Quezada J, Veas R, Altamirano C, Braun-Galleani S, Fickers P, Berrios J. Advances in Cell Engineering of the Komagataella phaffii Platform for Recombinant Protein Production. Metabolites 2022; 12:metabo12040346. [PMID: 35448535 PMCID: PMC9027633 DOI: 10.3390/metabo12040346] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/01/2022] [Accepted: 04/06/2022] [Indexed: 12/11/2022] Open
Abstract
Komagataella phaffii (formerly known as Pichia pastoris) has become an increasingly important microorganism for recombinant protein production. This yeast species has gained high interest in an industrial setting for the production of a wide range of proteins, including enzymes and biopharmaceuticals. During the last decades, relevant bioprocess progress has been achieved in order to increase recombinant protein productivity and to reduce production costs. More recently, the improvement of cell features and performance has also been considered for this aim, and promising strategies with a direct and substantial impact on protein productivity have been reported. In this review, cell engineering approaches including metabolic engineering and energy supply, transcription factor modulation, and manipulation of routes involved in folding and secretion of recombinant protein are discussed. A lack of studies performed at the higher-scale bioreactor involving optimisation of cultivation parameters is also evidenced, which highlights new research aims to be considered.
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Affiliation(s)
- Cristina Bustos
- School of Biochemical Engineering, Pontificia Universidad Católica de Valparaíso, Av. Brasil 2085, Valparaíso 2362803, Chile; (C.B.); (J.Q.); (R.V.); (C.A.); (S.B.-G.)
- Microbial Processes and Interactions, TERRA Teaching and Research Centre, Gembloux Agro-Bio Tech, University of Liège, Av. de la Faculté 2B, 5030 Gembloux, Belgium;
| | - Johan Quezada
- School of Biochemical Engineering, Pontificia Universidad Católica de Valparaíso, Av. Brasil 2085, Valparaíso 2362803, Chile; (C.B.); (J.Q.); (R.V.); (C.A.); (S.B.-G.)
| | - Rhonda Veas
- School of Biochemical Engineering, Pontificia Universidad Católica de Valparaíso, Av. Brasil 2085, Valparaíso 2362803, Chile; (C.B.); (J.Q.); (R.V.); (C.A.); (S.B.-G.)
| | - Claudia Altamirano
- School of Biochemical Engineering, Pontificia Universidad Católica de Valparaíso, Av. Brasil 2085, Valparaíso 2362803, Chile; (C.B.); (J.Q.); (R.V.); (C.A.); (S.B.-G.)
| | - Stephanie Braun-Galleani
- School of Biochemical Engineering, Pontificia Universidad Católica de Valparaíso, Av. Brasil 2085, Valparaíso 2362803, Chile; (C.B.); (J.Q.); (R.V.); (C.A.); (S.B.-G.)
| | - Patrick Fickers
- Microbial Processes and Interactions, TERRA Teaching and Research Centre, Gembloux Agro-Bio Tech, University of Liège, Av. de la Faculté 2B, 5030 Gembloux, Belgium;
| | - Julio Berrios
- School of Biochemical Engineering, Pontificia Universidad Católica de Valparaíso, Av. Brasil 2085, Valparaíso 2362803, Chile; (C.B.); (J.Q.); (R.V.); (C.A.); (S.B.-G.)
- Correspondence: ; Tel.: +56-32-237-2012
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11
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Wang D, Li W, Zhang X, Liang S, Lin Y. Green Process: Improved Semi-Continuous Fermentation of Pichia pastoris Based on the Principle of Vitality Cell Separation. Front Bioeng Biotechnol 2021; 9:777774. [PMID: 34917600 PMCID: PMC8669635 DOI: 10.3389/fbioe.2021.777774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 10/28/2021] [Indexed: 11/13/2022] Open
Abstract
The large-scale fermentation of Pichia pastoris for recombinant protein production would be time consuming and produce a large amount of waste yeast. Here we introduce a novel semi-continuous fermentation process for P. pastoris GS115 that can separate vitality cells from broth and recycle the cells to produce high-secretory recombinant pectate lyase. It is based on differences in cell sedimentation coefficients with the formation of salt bridges between metal ions and various cell states. Compared to batch-fed cultivation and general semi-continuous culture, the novel process has significant advantages, such as consuming fewer resources, taking less time, and producing less waste yeast. Sedimentation with the addition of Fe3+ metal ions consumed 14.8 ± 0.0% glycerol, 97.8 ± 1.3% methanol, 55.0 ± 0.9 inorganic salts, 81.5 ± 0.0% time cost, and 77.0 ± 0.1% waste yeast versus batch-fed cultivation to produce an equal amount of protein; in addition, the cost of solid-liquid separation was lower for cells in the collected fermentation broth. The process is economically and environmentally efficient for producing recombinant proteins.
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Affiliation(s)
- Denggang Wang
- South China University of Technology, Guangzhou, China
| | - Wenjie Li
- South China University of Technology, Guangzhou, China
| | - Xinying Zhang
- South China University of Technology, Guangzhou, China
| | - Shuli Liang
- South China University of Technology, Guangzhou, China
| | - Ying Lin
- South China University of Technology, Guangzhou, China
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12
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Abstract
The methylotrophic yeast Pichia pastoris is currently one of the most versatile and popular hosts for the production of heterologous proteins, including industrial enzymes. The popularity of P. pastoris stems from its ability to grow to high cell densities, producing high titers of secreted heterologous protein with very low amounts of endogenous proteins. Its ability to express correctly folded proteins with post-translational modifications makes it an excellent candidate for the production of biopharmaceuticals. In addition, production in P. pastoris typically uses the strong, methanol-inducible and tightly regulated promoter (PAOX1), which can result in heterologous protein that constitutes up to 30% of total cell protein upon growth in methanol. In this chapter, we present methodology for the production of secreted recombinant proteins in P. pastoris, and we discuss alternatives to enhance protein production with the desired yield and quality.
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13
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Liu W, Xiang H, Zhang T, Pang X, Su J, Liu H, Ma B, Yu L. Screening and Selection of a New Medium for Diosgenin Production via Microbial Biocatalysis of Fusarium sp. Pharmaceuticals (Basel) 2021; 14:ph14050390. [PMID: 33919111 PMCID: PMC8143133 DOI: 10.3390/ph14050390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/15/2021] [Accepted: 04/20/2021] [Indexed: 11/16/2022] Open
Abstract
Steroidal saponins are widely used as starting precursors and medical intermediates for the semi-/total-synthesis of hundreds of steroidal drugs. One such steroidal saponin is diosgenin, which has attracted significant attention due to the huge market demand in the pharmaceutical industry. Due to water waste and severe environmental pollution, the traditional diosgenin production process based on direct acid hydrolysis is no longer used. In this study, to develop a submerged fermentation (SmF) medium for clean diosgenin production via efficient microbial biocatalysis, the Box-Behnken design (BBD) in combination with the Plackett-Burman design (PBD) was used to determine the medium compositions for Fusarium strains. Three components (wheat bran, phosphate, and Tween-80) were determined as significant factors by the PBD. Using the BBD, the three significant factors were further optimized, and the optimum values were determined for maximal diosgenin production. With 21.16 g/L of wheat bran, 9.60 g/L of phosphate, and 1.97 g/L of Tween-80, the diosgenin yield was 2.28%, i.e., 3.17 mg/L/h. The experimental values agreed with the predicted values, representing a significant increase in diosgenin production compared to its production using the basic SmF medium. For the first time, we reported the development of a new medium for Fusarium strains to produce diosgenin via microbial biocatalysis of the root of Dioscorea zingiberensis C. H. Wright (DZW). A simple-composition, low-cost, and high-efficiency medium was developed for the first time for the SmF of Fusarium strains. The medium is considered useful for large-scale SmF and may be applicable to other fungi. This study lays a solid foundation for diosgenin production in an acid-free and wastewater-free way. It may also provide fundamental support for producing other value-added products via microbial biocatalysis of low-value materials by endophytic fungi.
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Affiliation(s)
- Wancang Liu
- Division for Medicinal Microorganisms Related Strains, CAMS Collection Center of Pathogenic Microorganisms, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China; (W.L.); (T.Z.); (X.P.); (J.S.); (H.L.)
| | - Haibo Xiang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430011, China;
| | - Tao Zhang
- Division for Medicinal Microorganisms Related Strains, CAMS Collection Center of Pathogenic Microorganisms, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China; (W.L.); (T.Z.); (X.P.); (J.S.); (H.L.)
| | - Xu Pang
- Division for Medicinal Microorganisms Related Strains, CAMS Collection Center of Pathogenic Microorganisms, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China; (W.L.); (T.Z.); (X.P.); (J.S.); (H.L.)
| | - Jing Su
- Division for Medicinal Microorganisms Related Strains, CAMS Collection Center of Pathogenic Microorganisms, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China; (W.L.); (T.Z.); (X.P.); (J.S.); (H.L.)
| | - Hongyu Liu
- Division for Medicinal Microorganisms Related Strains, CAMS Collection Center of Pathogenic Microorganisms, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China; (W.L.); (T.Z.); (X.P.); (J.S.); (H.L.)
| | - Baiping Ma
- Beijing Institute of Radiation Medicine, Beijing 100850, China;
| | - Liyan Yu
- Division for Medicinal Microorganisms Related Strains, CAMS Collection Center of Pathogenic Microorganisms, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China; (W.L.); (T.Z.); (X.P.); (J.S.); (H.L.)
- Correspondence: ; Tel.: +86-010-63187118
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14
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Liu W, Xiang H, Zhang T, Pang X, Su J, Liu H, Ma B, Yu L. Development of a New Bioprocess for Clean Diosgenin Production through Submerged Fermentation of an Endophytic Fungus. ACS OMEGA 2021; 6:9537-9548. [PMID: 33869934 PMCID: PMC8047649 DOI: 10.1021/acsomega.1c00010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 03/18/2021] [Indexed: 06/12/2023]
Abstract
Diosgenin is used widely to synthesize steroidal hormone drugs in the pharmaceutical industry. The conventional diosgenin production process, direct acid hydrolysis of the root of Dioscorea zingiberensis C. H. Wright (DZW), causes large amounts of wastewater and severe environmental pollution. To develop a clean and effective method, the endophytic fungus Fusarium sp. CPCC 400226 was screened for the first time for the microbial biotransformation of DZW in submerged fermentation (SmF). Statistical design and response surface methodology (RSM) were implemented to develop the diosgenin production process using the Fusarium strains. The environmental variables that significantly affected diosgenin yield were determined by the two-level Plackett-Burman design (PBD) with nine factors. PBD indicates that the fermentation period, culture temperature, and antifoam reagent addition are the most influential variables. These three variables were further optimized using the response surface design (RSD). A quadratic model was then built by the central composite design (CCD) to study the impact of interaction and quadratic effect on diosgenin yield. The values of the coefficient of determination for the PBD and CCD models were all over 0.95. P-values for both models were 0.0024 and <0.001, with F-values of ∼414 and ∼2215, respectively. The predicted results showed that a maximum diosgenin yield of 2.22% could be obtained with a fermentation period of 11.89 days, a culture temperature of 30.17 °C, and an antifoam reagent addition of 0.20%. The experimental value was 2.24%, which was in great agreement with predicted value. As a result, over 80% of the steroidal saponins in DZW were converted into diosgenin, presenting a ∼3-fold increase in diosgenin yield. For the first time, we report the SmF of a Fusarium strain used to produce diosgenin through the microbial biotransformation of DZW. A practical diosgenin production process was established for the first time for Fusarium strains. This bioprocess is acid-free and wastewater-free, providing a promising environmentally friendly alternative to diosgenin production in industrial applications. The information provided in the current study may be applicable to produce diosgenin in SmF by other endophytic fungi and lays a solid foundation for endophytic fungi to produce natural products.
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Affiliation(s)
- Wancang Liu
- Institute
of Medicinal Biotechnology, Chinese Academy
of Medical Sciences & Peking Union Medical College, 2 Nanwei Road, Beijing 100050, P. R.
China
| | - Haibo Xiang
- Institute
of Medicinal Biotechnology, Chinese Academy
of Medical Sciences & Peking Union Medical College, 2 Nanwei Road, Beijing 100050, P. R.
China
- State
Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life
Sciences, Hubei University, 368 You Yi Road, Wuhan, Hubei 430062, P. R. China
| | - Tao Zhang
- Institute
of Medicinal Biotechnology, Chinese Academy
of Medical Sciences & Peking Union Medical College, 2 Nanwei Road, Beijing 100050, P. R.
China
| | - Xu Pang
- Institute
of Medicinal Biotechnology, Chinese Academy
of Medical Sciences & Peking Union Medical College, 2 Nanwei Road, Beijing 100050, P. R.
China
| | - Jing Su
- Institute
of Medicinal Biotechnology, Chinese Academy
of Medical Sciences & Peking Union Medical College, 2 Nanwei Road, Beijing 100050, P. R.
China
| | - Hongyu Liu
- Institute
of Medicinal Biotechnology, Chinese Academy
of Medical Sciences & Peking Union Medical College, 2 Nanwei Road, Beijing 100050, P. R.
China
| | - Baiping Ma
- Institute
of Radiation Medicine, 27 Tai Ping Road, Beijing 100850, P. R. China
| | - Liyan Yu
- Institute
of Medicinal Biotechnology, Chinese Academy
of Medical Sciences & Peking Union Medical College, 2 Nanwei Road, Beijing 100050, P. R.
China
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15
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Duman-Özdamar ZE, Binay B. Production of Industrial Enzymes via Pichia pastoris as a Cell Factory in Bioreactor: Current Status and Future Aspects. Protein J 2021; 40:367-376. [DOI: 10.1007/s10930-021-09968-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/02/2021] [Indexed: 02/06/2023]
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