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Wang XH, Zhang YQ, Zhang XR, Zhang XD, Sun XM, Wang XF, Sun XH, Song XY, Zhang YZ, Wang N, Chen XL, Xu F. High-Level Extracellular Production of a Trisaccharide-Producing Alginate Lyase AlyC7 in Escherichia coli and Its Agricultural Application. Mar Drugs 2024; 22:230. [PMID: 38786621 PMCID: PMC11123115 DOI: 10.3390/md22050230] [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: 04/10/2024] [Revised: 05/11/2024] [Accepted: 05/14/2024] [Indexed: 05/25/2024] Open
Abstract
Alginate oligosaccharides (AOS), products of alginate degradation by endotype alginate lyases, possess favorable biological activities and have broad applications. Although many have been reported, alginate lyases with homogeneous AOS products and secretory production by an engineered host are scarce. Herein, the alginate lyase AlyC7 from Vibrio sp. C42 was characterized as a trisaccharide-producing lyase exhibiting high activity and broad substrate specificity. With PelB as the signal peptide and 500 mM glycine as the additive, the extracellular production of AlyC7 in Escherichia coli reached 1122.8 U/mL after 27 h cultivation in Luria-Bertani medium. The yield of trisaccharides from sodium alginate degradation by the produced AlyC7 reached 758.6 mg/g, with a purity of 85.1%. The prepared AOS at 20 μg/mL increased the root length of lettuce, tomato, wheat, and maize by 27.5%, 25.7%, 9.7%, and 11.1%, respectively. This study establishes a robust foundation for the industrial and agricultural applications of AlyC7.
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Affiliation(s)
- Xiao-Han Wang
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-H.W.); (Y.-Q.Z.); (X.-R.Z.); (X.-D.Z.); (X.-F.W.); (X.-H.S.); (X.-Y.S.); (Y.-Z.Z.)
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China;
- Joint Research Center for Marine Microbial Science and Technology, Shandong University and Ocean University of China, Qingdao 266237, China
- Shandong Key Laboratory of Marine Ecological Restoration, Shandong Marine Resource and Environment Research Institute, Yantai 264006, China
| | - Yu-Qiang Zhang
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-H.W.); (Y.-Q.Z.); (X.-R.Z.); (X.-D.Z.); (X.-F.W.); (X.-H.S.); (X.-Y.S.); (Y.-Z.Z.)
| | - Xin-Ru Zhang
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-H.W.); (Y.-Q.Z.); (X.-R.Z.); (X.-D.Z.); (X.-F.W.); (X.-H.S.); (X.-Y.S.); (Y.-Z.Z.)
| | - Xiao-Dong Zhang
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-H.W.); (Y.-Q.Z.); (X.-R.Z.); (X.-D.Z.); (X.-F.W.); (X.-H.S.); (X.-Y.S.); (Y.-Z.Z.)
| | - Xiao-Meng Sun
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China;
| | - Xiao-Fei Wang
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-H.W.); (Y.-Q.Z.); (X.-R.Z.); (X.-D.Z.); (X.-F.W.); (X.-H.S.); (X.-Y.S.); (Y.-Z.Z.)
| | - Xiao-Hui Sun
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-H.W.); (Y.-Q.Z.); (X.-R.Z.); (X.-D.Z.); (X.-F.W.); (X.-H.S.); (X.-Y.S.); (Y.-Z.Z.)
| | - Xiao-Yan Song
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-H.W.); (Y.-Q.Z.); (X.-R.Z.); (X.-D.Z.); (X.-F.W.); (X.-H.S.); (X.-Y.S.); (Y.-Z.Z.)
- Joint Research Center for Marine Microbial Science and Technology, Shandong University and Ocean University of China, Qingdao 266237, China
| | - Yu-Zhong Zhang
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-H.W.); (Y.-Q.Z.); (X.-R.Z.); (X.-D.Z.); (X.-F.W.); (X.-H.S.); (X.-Y.S.); (Y.-Z.Z.)
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China;
- Joint Research Center for Marine Microbial Science and Technology, Shandong University and Ocean University of China, Qingdao 266237, China
| | - Ning Wang
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-H.W.); (Y.-Q.Z.); (X.-R.Z.); (X.-D.Z.); (X.-F.W.); (X.-H.S.); (X.-Y.S.); (Y.-Z.Z.)
- Joint Research Center for Marine Microbial Science and Technology, Shandong University and Ocean University of China, Qingdao 266237, China
| | - Xiu-Lan Chen
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-H.W.); (Y.-Q.Z.); (X.-R.Z.); (X.-D.Z.); (X.-F.W.); (X.-H.S.); (X.-Y.S.); (Y.-Z.Z.)
- Joint Research Center for Marine Microbial Science and Technology, Shandong University and Ocean University of China, Qingdao 266237, China
| | - Fei Xu
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-H.W.); (Y.-Q.Z.); (X.-R.Z.); (X.-D.Z.); (X.-F.W.); (X.-H.S.); (X.-Y.S.); (Y.-Z.Z.)
- Joint Research Center for Marine Microbial Science and Technology, Shandong University and Ocean University of China, Qingdao 266237, China
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Xu Q, Wang X, Mu Z, Zhou Y, Ding X, Ji X, Yan J, Pan D, Chen C, Xu Y, Wang L, Wang J, Wang G, Yang M. Repurposing iron chelators for accurate positron emission tomography imaging tracking of radiometal-labeled cell transplants. MedComm (Beijing) 2024; 5:e473. [PMID: 38292327 PMCID: PMC10827001 DOI: 10.1002/mco2.473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 01/02/2024] [Accepted: 01/03/2024] [Indexed: 02/01/2024] Open
Abstract
The use of radiolabeled cells for positron emission tomography (PET) imaging tracking has been a promising approach for monitoring cell-based therapies. However, the presence of free radionuclides released from dead cells during tracking can interfere with the signal from living cells, leading to inaccurate results. In this study, the effectiveness of the iron chelators deferoxamine (DFO) and deferiprone in removing free radionuclides 89Zr and 68Ga, respectively, was demonstrated in vivo utilizing PET imaging. The use of DFO during PET imaging tracking of 89Zr-labeled mesenchymal stem cells (MSCs) significantly reduced uptake in bone while preserving uptake in major organs, resulting in more accurate and reliable tracking. Furthermore, the clearance of free 89Zr in vivo resulted in a significant reduction in radiation dose from 89Zr-labeled MSCs. Additionally, the avoidance of free radionuclide accumulation in bone allowed for more precise observation of the homing process and persistence during bone marrow transplantation. The efficacy and safety of this solution suggest this finding has potential for widespread use in imaging tracking studies involving various cells. Moreover, since this method employed iron chelator drugs in clinical use, which makes it is a good prospect for clinical translation.
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Affiliation(s)
- Qian Xu
- Department of RadiopharmaceuticalsSchool of PharmacyNanjing Medical UniversityNanjingChina
- NHC Key Laboratory of Nuclear MedicineJiangsu Key Laboratory of Molecular Nuclear MedicineJiangsu Institute of Nuclear MedicineWuxiChina
| | - Xinyu Wang
- Department of RadiopharmaceuticalsSchool of PharmacyNanjing Medical UniversityNanjingChina
- NHC Key Laboratory of Nuclear MedicineJiangsu Key Laboratory of Molecular Nuclear MedicineJiangsu Institute of Nuclear MedicineWuxiChina
| | - Ziqian Mu
- Department of RadiopharmaceuticalsSchool of PharmacyNanjing Medical UniversityNanjingChina
- NHC Key Laboratory of Nuclear MedicineJiangsu Key Laboratory of Molecular Nuclear MedicineJiangsu Institute of Nuclear MedicineWuxiChina
| | - Yixiang Zhou
- Department of RadiopharmaceuticalsSchool of PharmacyNanjing Medical UniversityNanjingChina
- NHC Key Laboratory of Nuclear MedicineJiangsu Key Laboratory of Molecular Nuclear MedicineJiangsu Institute of Nuclear MedicineWuxiChina
| | - Xiang Ding
- Department of RadiopharmaceuticalsSchool of PharmacyNanjing Medical UniversityNanjingChina
- NHC Key Laboratory of Nuclear MedicineJiangsu Key Laboratory of Molecular Nuclear MedicineJiangsu Institute of Nuclear MedicineWuxiChina
| | - Xin Ji
- NHC Key Laboratory of Nuclear MedicineJiangsu Key Laboratory of Molecular Nuclear MedicineJiangsu Institute of Nuclear MedicineWuxiChina
| | - Junjie Yan
- Department of RadiopharmaceuticalsSchool of PharmacyNanjing Medical UniversityNanjingChina
- NHC Key Laboratory of Nuclear MedicineJiangsu Key Laboratory of Molecular Nuclear MedicineJiangsu Institute of Nuclear MedicineWuxiChina
| | - Donghui Pan
- NHC Key Laboratory of Nuclear MedicineJiangsu Key Laboratory of Molecular Nuclear MedicineJiangsu Institute of Nuclear MedicineWuxiChina
| | - Chongyang Chen
- NHC Key Laboratory of Nuclear MedicineJiangsu Key Laboratory of Molecular Nuclear MedicineJiangsu Institute of Nuclear MedicineWuxiChina
| | - Yuping Xu
- Department of RadiopharmaceuticalsSchool of PharmacyNanjing Medical UniversityNanjingChina
- NHC Key Laboratory of Nuclear MedicineJiangsu Key Laboratory of Molecular Nuclear MedicineJiangsu Institute of Nuclear MedicineWuxiChina
| | - Lizhen Wang
- NHC Key Laboratory of Nuclear MedicineJiangsu Key Laboratory of Molecular Nuclear MedicineJiangsu Institute of Nuclear MedicineWuxiChina
| | - Jing Wang
- Jiangsu Renocell Biotech Co., Ltd.NanjingChina
| | - Guangji Wang
- Key Laboratory of Drug Metabolism and PharmacokineticsState Key Laboratory of Natural MedicinesChina Pharmaceutical UniversityNanjingChina
| | - Min Yang
- Department of RadiopharmaceuticalsSchool of PharmacyNanjing Medical UniversityNanjingChina
- NHC Key Laboratory of Nuclear MedicineJiangsu Key Laboratory of Molecular Nuclear MedicineJiangsu Institute of Nuclear MedicineWuxiChina
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Hashemzaei M, Ghoshoon MB, Jamshidi M, Moradbeygi F, Hashemzehi A. A Review on Romiplostim Mechanism of Action and the Expressive Approach in E. coli. Recent Pat Biotechnol 2024; 18:95-109. [PMID: 38282441 DOI: 10.2174/1872208317666230503094451] [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: 11/01/2022] [Revised: 02/10/2023] [Accepted: 02/24/2023] [Indexed: 01/30/2024]
Abstract
Immune thrombocytopenic purpura (ITP) is an autoimmune disorder determined by immune-mediated platelet demolition and reduction of platelet production. Romiplostim is a new thrombopoiesis motivating peptibody that binds and stimulates the human thrombopoietin receptor the patent of which was registered in 2008. It is used to treat thrombocytopenia in patients with chronic immune thrombocytopenic purpura. Romiplostim is a 60 kDa peptibody designed to inhibit cross-reacting immune responses. It consists of four high-affinity TPO-receptor binding domains for the Mpl receptor and one human IgG1 Fc domain. Escherichia coli is a good host for the fabrication of recombinant proteins such as romiplostim. The expression of a gene intended in E. coli is dependent on many factors such as a protein's inherent ability to fold, mRNA's secondary structure, its solubility, its toxicity preferential codon use, and its need for post-translational modification (PTM). This review focuses on the structure, function, mechanism of action, and expressive approach to romiplostim in E. coli.
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Affiliation(s)
- Masoud Hashemzaei
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Mehrnaz Jamshidi
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Fatemeh Moradbeygi
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ahmad Hashemzehi
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
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Kormanová Ľ, Levarski Z, Minich A, Varga V, Levarská L, Struhárňanská E, Turňa J, Stuchlík S. Novel expression system based on enhanced permeability of Vibrio natriegens cells induced by D,D- carboxypeptidase overexpression. World J Microbiol Biotechnol 2023; 39:277. [PMID: 37568013 PMCID: PMC10421817 DOI: 10.1007/s11274-023-03723-z] [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: 02/02/2023] [Accepted: 08/06/2023] [Indexed: 08/13/2023]
Abstract
Vibrio natriegens is a fast-growing, non-pathogenic marine bacterium with promising features for biotechnological applications such as high-level recombinant protein production or fast DNA propagation. A remarkable short generation time (< 10 min), robust proteosynthetic activity and versatile metabolism with abilities to utilise wide range of substrates contribute to its establishment as a future industrial platform for fermentation processes operating with high productivity.D,D-carboxypeptidases are membrane-associated enzymes involved in peptidoglycan biosynthesis and cell wall formation. This study investigates the impact of overexpressed D,D-carboxypeptidases on membrane integrity and the increased leakage of intracellular proteins into the growth medium in V. natriegens. Our findings confirm that co-expression of these enzymes can enhance membrane permeability, thereby facilitating the transport of target proteins into the extracellular environment, without the need for secretion signals, tags, or additional permeabilization methods. Using only a single step IMAC chromatography, we were able to purify AfKatG, MDBP or Taq polymerase in total yields of 117.9 ± 56.0 mg/L, 36.5 ± 12.9 mg/L and 26.5 ± 6.0 mg/L directly from growth medium, respectively. These results demonstrate the feasibility of our V. natriegens based system as a broadly applicable extracellular tag-less recombinant protein producer.
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Affiliation(s)
- Ľubica Kormanová
- Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, Bratislava, 811 04 Slovak Republic
| | - Zdenko Levarski
- Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, Bratislava, 811 04 Slovak Republic
- Science Park, Comenius University in Bratislava, Ilkovičova 8, Bratislava, 811 04 Slovak Republic
| | - Andrej Minich
- Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, Bratislava, 811 04 Slovak Republic
| | - Viktor Varga
- Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, Bratislava, 811 04 Slovak Republic
| | - Lenka Levarská
- Science Park, Comenius University in Bratislava, Ilkovičova 8, Bratislava, 811 04 Slovak Republic
| | - Eva Struhárňanská
- Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, Bratislava, 811 04 Slovak Republic
| | - Ján Turňa
- Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, Bratislava, 811 04 Slovak Republic
| | - Stanislav Stuchlík
- Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, Bratislava, 811 04 Slovak Republic
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Fu L, Sun M, Wen W, Dong N, Li D. Extracellular production of Ulp1 403-621 in leaky E. coli and its application in antimicrobial peptide production. Appl Microbiol Biotechnol 2022; 106:7805-7817. [PMID: 36260100 DOI: 10.1007/s00253-022-12235-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 10/03/2022] [Accepted: 10/07/2022] [Indexed: 11/02/2022]
Abstract
Small ubiquitin-like modifier (SUMO) tag is widely used to promote soluble expression of exogenous proteins, which can then be cleaved by ubiquitin-like protease 1 (Ulp1) to obtain interested protein. But the application of Ulp1 in large-scale recombinant protein production is limited by complicated purification procedures and high cost. In this study, we describe an efficient and simple method of extracellular production of Ulp1403-621 using a leaky Escherichia coli BL21(DE3), engineered by deleting the peptidoglycan-associated outer membrane lipoprotein (pal) gene. Ulp1403-621 was successfully leaked into extracellular supernatant by the BL21(DE3)-Δpal strain after IPTG induction. The addition of 1% glycine increased the extracellular production of Ulp1403-621 approximately four fold. Moreover, extracellular Ulp1403-621 without purification had high activities for cleaving SUMO fusion proteins, and antimicrobial peptide pBD2 obtained after cleavage can inhibit the growth of Staphylococcus aureus. The specific activity of extracellular Ulp1403-621 containing 1 mM EDTA and 8 mM DTT reached 2.0 × 106 U/L. Another commonly used protease, human rhinovirus 3C protease, was also successfully secreted by leaky E. coli strains. In conclusion, extracellular production of tool enzymes is an attractive way for producing large-scale active recombinant proteins at a lower cost for pharmaceutical, industrial, and biotechnological applications. KEY POINTS: • First report of extracellular production of Ulp1403-621 in leaky Escherichia coli BL21(DE3) strain. • One percent glycine addition into cultivation medium increased the extracellular production of Ulp1403-621 approximately four fold. • The specific activity of extracellular Ulp1403-621 produced in this study reached 2.0 × 106 U/L.
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Affiliation(s)
- Linglong Fu
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, People's Republic of China
| | - Mengning Sun
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, People's Republic of China
| | - Weizhang Wen
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, People's Republic of China
| | - Na Dong
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, People's Republic of China.
| | - Defa Li
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, People's Republic of China.
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Xu L, Zhang Y, Dong Y, Qin G, Zhao X, Shen Y. Enhanced extracellular β-mannanase production by overexpressing PrsA lipoprotein in Bacillus subtilis and optimizing culture conditions. J Basic Microbiol 2022; 62:815-823. [PMID: 35475500 DOI: 10.1002/jobm.202200080] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/30/2022] [Accepted: 04/15/2022] [Indexed: 11/08/2022]
Abstract
In this study, first, β-mannanase gene man derived from Bacillus amyloliquefaciens CGMCC1.857 was cloned and expressed in Bacillus subtilis 168 to generate B. subtilis M1. However, the extracellular β-mannanase activity of B. subtilis M1 was not very high. To further increase extracellular β-mannanase extracytoplasmic molecular chaperone, PrsA lipoprotein was tandem expressed with man gene in B. subtilis 168 to yield B. subtilis M2. The secretion of β-mannanase of B. subtilis M2 was enhanced by 15.4%, compared with the control B. subtilis M1. Subsequently, process optimization strategies were also developed to enhance β-mannanase production by B. subtilis 168 M2. It was noted that the optimal temperature for β-mannanase production (25°C) was different from the optimal growth temperature (37°C) for B. subtilis. Based on these findings, a two-stage temperature control strategy was proposed where the bacterial culture was maintained at 37°C for the first 12 h to obtain a high rate of cell growth, followed by lowering the temperature to 25°C to enhance β-mannanase production. Using this strategy, the extracellular β-mannanase activity reached 5016 ± 167 U/ml at about 36 h, which was 19.1% greater than the best result obtained using a constant temperature (25°C). The result of this study showed that PrsA lipoprotein overexpression and two-stage temperature control strategy were more efficient for β-mannanase fermentation in B. subtilis.
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Affiliation(s)
- Liyu Xu
- Department of Applied Engineering, Zhejiang Institute of Economics and Trade, Hangzhou, Zhejiang Province, China
| | - Yongyong Zhang
- College of Life Sciences, China Jiliang University, Hangzhou, Zhejiang Province, China
| | - Yuehan Dong
- Department of Applied Engineering, Zhejiang Institute of Economics and Trade, Hangzhou, Zhejiang Province, China
| | - Gang Qin
- Department of Applied Engineering, Zhejiang Institute of Economics and Trade, Hangzhou, Zhejiang Province, China
| | - Xiao Zhao
- Department of Applied Engineering, Zhejiang Institute of Economics and Trade, Hangzhou, Zhejiang Province, China
| | - Yanyan Shen
- Department of Applied Engineering, Zhejiang Institute of Economics and Trade, Hangzhou, Zhejiang Province, China
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Unver Y, Yildiz S, Acar M. Extracellular production of azurin from Pseudomonas aeruginosa in the presence of Triton X-100 or Tween 80. Bioprocess Biosyst Eng 2022; 45:553-561. [PMID: 35039942 DOI: 10.1007/s00449-021-02678-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Accepted: 12/04/2021] [Indexed: 11/02/2022]
Abstract
Azurin which is a bacterial secondary metabolite has attracted much attention as potential anticancer agent in recent years. This copper-containing periplasmic redox protein supresses the tumor growth selectively. High-level secretion of proteins into the culture medium offers a significant advantage over periplasmic or cytoplasmic expression. The aim of this study was to investigate the effect of nonionic surfactants on the expression of the Pseudomonas aeruginosa azurin. Different concentrations of Triton X-100 and Tween 80 were used as supplements in growth media and extracellular azurin production was stimulated by both surfactants. According to western blot analysis results, in the presence of Triton X-100, maximum azurin expression level was achieved with 96 h of incubation at 1% concentration, and 48 h at 2% concentration. On the other hand, maximum azurin expression level was achieved in the presence of 1% Tween 80 at 72 h incubation. This study suggested for the first time a high level of azurin secretion from P. aeruginosa in the presence of Triton X-100 or Tween 80, which would be advantageous for the purification procedure.
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Affiliation(s)
- Yagmur Unver
- Department of Molecular Biology and Genetics, Faculty of Science, Atatürk University, Erzurum, Turkey.
| | - Seyda Yildiz
- Department of Molecular Biology and Genetics, Faculty of Science, Atatürk University, Erzurum, Turkey
| | - Melek Acar
- Department of Molecular Biology and Genetics, Faculty of Science, Atatürk University, Erzurum, Turkey
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Enhancing Secretion of Endoglucanase in Zymomonas mobilis by Disturbing Peptidoglycan Synthesis. Appl Environ Microbiol 2021; 88:e0216121. [PMID: 34818110 DOI: 10.1128/aem.02161-21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Zymomonas mobilis (Z. mobilis) is a potential candidate for consolidated bioprocessing (CBP) strain in lignocellulosic biorefinery. However, the low-level secretion of cellulases limits this CBP process, and the mechanism of protein secretion affected by cell wall peptidoglycan is also not well understood. Here we constructed several Penicillin Binding Proteins (PBPs)-deficient strains derivated from Z. mobilis S192 to perturb the cell wall peptidoglycan network and investigated the effects of peptidoglycan on the endoglucanase secretion. Results showed that extracellular recombinant endoglucanase production was significantly enhanced in PBPs mutant strains, notably, △1089/0959 (4.09-fold) and △0959 (5.76-fold) in comparison to parent strains. Besides, for PBPs-deficient strains, the growth performance was not significantly inhibited but with enhanced antibiotic sensitivity and reduced inhibitor tolerance, otherwise, cell morphology was altered obviously. The concentration of intracellular soluble peptidoglycan was increased, especially for single gene deletion. Outer membrane permeability of PBPs-deficient strains was also improved, notably, △1089/0959 (1.14-fold) and △0959 (1.07-fold), which might explain the increased endoglucanase extracellular secretion. Our finding indicated that PBPs-deficient Z. mobilis is capable of increasing endoglucanase extracellular secretion via cell wall peptidoglycan disturbance and it will provide a foundation for the development of CBP technology in Z. mobilis in the future. IMPORTANCE Cell wall peptidoglycan has the function to maintain cell robustness, and also acts as the barrier to secret recombinant proteins from the cytoplasm to extracellular space in Z. mobilis and other bacterias. Herein, we perturb the peptidoglycan synthesis network via knocking out PBPs (ZMO0197, ZMO0959, ZMO1089) in order to enhance recombinant endoglycanase extracellular secretion in Z. mobilis S912. This study can not only lay the foundation for understanding the regulatory network of cell wall synthesis but also provide guidance for the construction of CBP strains in Z. mobilis.
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Meng Q, Tian X, Jiang B, Zhou L, Chen J, Zhang T. Characterization and enhanced extracellular overexpression of a new salt-activated alginate lyase. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:5154-5162. [PMID: 33608926 DOI: 10.1002/jsfa.11161] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 01/11/2021] [Accepted: 02/19/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Alginate lyases (EC 4.4.2.3/4.4.2.11) have been applied to produce alginate oligosaccharides, which have physiological advantages such as prebiotic and antidiabetic effects, and are of benefit in the food and pharmaceutical industries. Extracellular production of recombinant proteins in Escherichia coli presents advantages including simplified downstream processing and high productivity; however, the presence of certain signal peptides does not always ensure successful secretion, which make the extracellular production of alginate lyase in E. coli rarely reported but of great significance. RESULTS A PL7 family alginate lyase, Aly01, with its native signal peptide from Vibrio natriegens SK42.001, was identified, characterized, and extracellularly expressed in E. coli. The enzyme specifically released trisaccharide from alginate and was strictly NaCl activated. Green fluorescent protein (GFP) was fused with the Aly01 signal peptide and successfully secreted in E. coli to expand the feasibility of using this signal peptide to produce other heterologous proteins extracellularly. Through a synergistic strategy of utilizing Terrific Broth (TB) medium supplemented with 120 mmol L-1 glycine and 10 mmol L-1 calcium, the lag phase of protein secretion was reduced to 3 h from 12 h; meanwhile calcium remedied glycine-related cell growth impairment, leading to further enhancement of overall enzyme productivity, reaching a maximum of 4.55 U mL-1 . CONCLUSION A new salt-activated alginate lyase, Aly01, was identified and characterized. E. coli employed its signal peptide and extracellularly expressed both Aly01 and a GFP, which indicated the signal peptide of Aly01 could be a powerful tool for extracellular production of other heterologous proteins in E. coli. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Qing Meng
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Xinyu Tian
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Bo Jiang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, China
| | - Licheng Zhou
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Jingjing Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Tao Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
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Flores-Santos JC, Moguel IS, Monteiro G, Pessoa A, Vitolo M. Improvement in extracellular secretion of recombinant L-asparaginase II by Escherichia coli BL21 (DE3) using glycine and n-dodecane. Braz J Microbiol 2021; 52:1247-1255. [PMID: 34100260 DOI: 10.1007/s42770-021-00534-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 05/18/2021] [Indexed: 11/28/2022] Open
Abstract
L-asparaginase II (ASNase) is the biopharmaceutical of choice for the treatment of acute lymphoblastic leukaemia. In this study, E. coli BL21 (DE3) transformed with the pET15b + asnB vector which expresses recombinant ASNase was used as a source to obtain this enzyme. The ideal conditions to produce ASNase would be a high level of secretion into the extracellular medium, which depends not only on the application of molecular biology techniques but also on the development of a strategy to modify cell permeability such as the addition of substances to the culture medium that stimulate destabilisation of structural components of the cell. Thus, the growth of E. coli BL21 (DE3) in modified Luria-Bertani broth, supplemented with 0.8% (w/v) glycine and 6% (v/v) n-dodecane, increased the total yield of ASNase by about 50% (15,108 IU L-1) and resulted in a 16-fold increase in extracellular enzymatic productivity (484 IU L-1 h-1), compared to production using the same medium without addition of these substances. Most of the enzyme (89%) was secreted into the culture medium 24 h after the induction step. This proposed approach presents a simple strategy to increase extracellular production of ASNase in E. coli.
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Affiliation(s)
- Juan Carlos Flores-Santos
- Department of Pharmaceutical and Biochemical Technology, School of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, Bloco 16, São Paulo, SP, CEP, 580, Brazil
| | - Ignacio S Moguel
- Department of Pharmaceutical and Biochemical Technology, School of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, Bloco 16, São Paulo, SP, CEP, 580, Brazil
| | - Gisele Monteiro
- Department of Pharmaceutical and Biochemical Technology, School of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, Bloco 16, São Paulo, SP, CEP, 580, Brazil.
| | - Adalberto Pessoa
- Department of Pharmaceutical and Biochemical Technology, School of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, Bloco 16, São Paulo, SP, CEP, 580, Brazil
| | - Michele Vitolo
- Department of Pharmaceutical and Biochemical Technology, School of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, Bloco 16, São Paulo, SP, CEP, 580, Brazil
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11
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Wang EX, Liu Y, Ma Q, Dong XT, Ding MZ, Yuan YJ. Synthetic cell–cell communication in a three-species consortium for one-step vitamin C fermentation. Biotechnol Lett 2019; 41:951-961. [DOI: 10.1007/s10529-019-02705-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 07/02/2019] [Indexed: 01/04/2023]
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12
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Yang H, Wang F, Wang H, Lu X, Shen W, Chen X. Deleting mrdA and mrcB to significantly improve extracellular recombinant protein production in Escherichia coli. Biochem Eng J 2019. [DOI: 10.1016/j.bej.2019.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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13
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Hu J, Lu X, Wang H, Wang F, Zhao Y, Shen W, Yang H, Chen X. Enhancing extracellular protein production in Escherichia coli by deleting the d-alanyl-d-alanine carboxypeptidase gene dacC. Eng Life Sci 2019; 19:270-278. [PMID: 32625007 DOI: 10.1002/elsc.201800199] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 01/03/2019] [Accepted: 01/18/2019] [Indexed: 12/24/2022] Open
Abstract
d-Alanyl-d-alanine carboxypeptidase DacC is important for synthesis and stabilization of the peptidoglycan layer of Escherichia coli. In this work, dacC of E. coli BL21 (DE3) was successfully deleted, and the effects of this deletion on extracellular protein production in E. coli were investigated. The extracellular activities and fluorescence value of recombinant amylase, green fluorescent protein, and α-galactosidase of the deletion mutants were increased by 82.3, 29.1, and 37.7%, respectively, compared with that of control cells. The outer membrane permeability and intracellular soluble peptidoglycan accumulation of deletion mutant were also enhanced compared with those of control cells, respectively. Based on fluorescence-assisted cell sorting analyses, we found that the morphology of the E. coli deletion mutant cells was altered compared with that of control cells. Local transparent bulges in the poles of the E. coli mutant with deletion of the dacC gene were found by transmission electron microscopy analysis. These bulges in the poles could explain the improvement in the production of extracellular protein by the E. coli mutant with deletion of the dacC gene. These findings provide important insights into the extracellular production of proteins using E. coli as microbial cell factories.
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Affiliation(s)
- Jinyuan Hu
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education Jiangnan University Wuxi P. R. China.,School of Biotechnology Jiangnan University Wuxi P. R. China
| | - Xiao Lu
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education Jiangnan University Wuxi P. R. China.,School of Biotechnology Jiangnan University Wuxi P. R. China
| | - Haokun Wang
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education Jiangnan University Wuxi P. R. China.,School of Biotechnology Jiangnan University Wuxi P. R. China
| | - Fuxiang Wang
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education Jiangnan University Wuxi P. R. China.,School of Biotechnology Jiangnan University Wuxi P. R. China
| | - Yuan Zhao
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education Jiangnan University Wuxi P. R. China.,School of Chemical and Material Engineering Jiangnan University Wuxi P. R. China
| | - Wei Shen
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education Jiangnan University Wuxi P. R. China.,School of Biotechnology Jiangnan University Wuxi P. R. China
| | - Haiquan Yang
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education Jiangnan University Wuxi P. R. China.,School of Biotechnology Jiangnan University Wuxi P. R. China
| | - Xianzhong Chen
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education Jiangnan University Wuxi P. R. China.,School of Biotechnology Jiangnan University Wuxi P. R. China
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14
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Na KI, Kim SJ, Choi DS, Min WK, Kim SG, Seo JH. Extracellular production of functional single-chain variable fragment against aflatoxin B1usingEscherichia coli. Lett Appl Microbiol 2019; 68:241-247. [DOI: 10.1111/lam.13110] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 11/29/2018] [Accepted: 12/19/2018] [Indexed: 12/01/2022]
Affiliation(s)
- K.-I. Na
- Department of Agricultural Biotechnology and Center for Food and Bioconvergence; Seoul National University; Seoul Republic of Korea
- Forces Support Systems Center; Defense Agency for Technology and Quality; Seoul Republic of Korea
| | - S.-J. Kim
- Department of Biomedical Science; U1 University; Chungbuk Republic of Korea
| | - D.-S. Choi
- Department of Biomedical Science; U1 University; Chungbuk Republic of Korea
| | - W.-K. Min
- Department of Food Science and Development; Kyungil University; Gyeongbuk Republic of Korea
| | - S.-G. Kim
- Department of Biomedical Science; U1 University; Chungbuk Republic of Korea
| | - J.-H. Seo
- Department of Agricultural Biotechnology and Center for Food and Bioconvergence; Seoul National University; Seoul Republic of Korea
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15
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Hong H, Zhao X, Wu Z. A two-stage glycine supplementation strategy enhances the extracellular expression of sortase A in Escherichia coli. Process Biochem 2019. [DOI: 10.1016/j.procbio.2018.09.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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16
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Using response surface methodology in combination with Plackett-Burman design for optimization of culture media and extracellular expression of Trichoderma reesei synthetic endoglucanase II in Escherichia coli. Mol Biol Rep 2018; 45:1197-1208. [PMID: 30032381 DOI: 10.1007/s11033-018-4272-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2018] [Accepted: 07/17/2018] [Indexed: 10/28/2022]
Abstract
Cellulases like endoglucanase II (EGII) from Trichoderma reesei are the industrial enzymes responsible for breakdown of cellulosic materials. Due to its importance for production of eco-friendly commercial products such as alternative biofuels, industrial EGII production and optimization of its production conditions merit consideration. The gene responsible for EGII expression was designed and sub-cloned in to pET26b expression vector and transformed into BL21 (DE3) pLysS cells. Protein expression and purification was followed by a RSM design (20 experiments) to optimize the IPTG Concentration, post induction period and cell density (OD600). Thereafter, another RSM design (20 experiments) was performed to find and optimize the most important permeabilizing factors to achieve higher extracellular EGII expression. The EGII expression levels were assessed by Ghose method. The EGII gene was sub-cloned and protein expression and purification were successfully performed. The RSM experiments indicated that 0.331 mM for IPTG Concentration, 10.89 H for post induction period and 3.41 for cell density (OD600) were the optimum culture. Glycine (0.99%), Triton X-100 (0.73%) and CaCl2 (0.232) have been assigned as the most effective membrane permeabalizing factors. Optimization of culture medium components has led to a 3.06 fold increase in extracellular expression of EGII. RSM is an amenable method to optimize the expression of commercially significant enzymes. Our results indicated that optimization of IPTG concentration, post induction period and cell density along with glycine, Triton X-100 and Ca2+ concentration could lead to more cost effective industrial production of EGII.
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17
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Kleiner-Grote GRM, Risse JM, Friehs K. Secretion of recombinant proteins from E. coli. Eng Life Sci 2018; 18:532-550. [PMID: 32624934 DOI: 10.1002/elsc.201700200] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 03/07/2018] [Accepted: 03/13/2018] [Indexed: 11/10/2022] Open
Abstract
The microorganism Escherichia coli is commonly used for recombinant protein production. Despite several advantageous characteristics like fast growth and high protein yields, its inability to easily secrete recombinant proteins into the extracellular medium remains a drawback for industrial production processes. To overcome this limitation, a multitude of approaches to enhance the extracellular yield and the secretion efficiency of recombinant proteins have been developed in recent years. Here, a comprehensive overview of secretion mechanisms for recombinant proteins from E. coli is given and divided into three main sections. First, the structure of the E. coli cell envelope and the known natural secretion systems are described. Second, the use and optimization of different one- or two-step secretion systems for recombinant protein production, as well as further permeabilization methods are discussed. Finally, the often-overlooked role of cell lysis in secretion studies and its analysis are addressed. So far, effective approaches for increasing the extracellular protein concentration to more than 10 g/L and almost 100% secretion efficiency exist, however, the large range of optimization methods and their combinations suggests that the potential for secretory protein production from E. coli has not yet been fully realized.
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Affiliation(s)
| | - Joe M Risse
- Fermentation Engineering Bielefeld University Bielefeld Germany.,Center for Biotechnology Bielefeld University Bielefeld Germany
| | - Karl Friehs
- Fermentation Engineering Bielefeld University Bielefeld Germany.,Center for Biotechnology Bielefeld University Bielefeld Germany
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18
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Complete Draft Genome Sequence of Escherichia coli K802. GENOME ANNOUNCEMENTS 2017; 5:5/39/e00934-17. [PMID: 28963204 PMCID: PMC5624750 DOI: 10.1128/genomea.00934-17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
ABSTRACT
Escherichia coli
K802 is an old strain used for cloning experiments, as well as for the production of recombinant proteins. To understand the genomic background of
E. coli
K802 better, we present here its complete draft genome sequence.
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19
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Li Y, Liu J, Wang Y, Liu B, Xie X, Jia R, Li C, Li Z. A two-stage temperature control strategy enhances extracellular secretion of recombinant α-cyclodextrin glucosyltransferase in Escherichia coli. AMB Express 2017; 7:165. [PMID: 28831769 PMCID: PMC5567581 DOI: 10.1186/s13568-017-0465-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 08/17/2017] [Indexed: 11/20/2022] Open
Abstract
The effects of temperature on extracellular secretion of the α-cyclodextrin glucosyltransferase (α-CGTase) from Paenibacillus macerans JFB05-01 by Escherichia coli were investigated. When protein expression was induced at constant temperature, the greatest amount of extracellular recombinant α-CGTase was produced at 25 °C. Higher or lower induction temperatures were not conducive to extracellular secretion of recombinant α-CGTase. To enhance extracellular secretion of α-CGTase by E. coli, a two-stage temperature control strategy was adopted. When expression was induced at 25 °C for 32 h, and then the temperature was shifted to 30 °C, the extracellular α-CGTase activity at 90 h was 45% higher than that observed when induction was performed at a constant temperature of 25 °C. Further experiments suggested that raising the induction temperature can benefit the transport of recombinant enzyme and compensate for the decreased rate of recombinant enzyme synthesis during the later stage of expression. This report provides a new method of optimizing the secretory expression of recombinant enzymes by E. coli.
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Affiliation(s)
- Yang Li
- School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, Jiangsu, People's Republic of China
| | - Jia Liu
- School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, Jiangsu, People's Republic of China
| | - Yinglan Wang
- School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, Jiangsu, People's Republic of China
| | - Bingjie Liu
- School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, Jiangsu, People's Republic of China
| | - Xiaofang Xie
- School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, Jiangsu, People's Republic of China
| | - Rui Jia
- School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, Jiangsu, People's Republic of China
| | - Caiming Li
- School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, Jiangsu, People's Republic of China
| | - Zhaofeng Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, People's Republic of China. .,School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, Jiangsu, People's Republic of China.
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20
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Reconstruction of amino acid biosynthetic pathways increases the productivity of 2-keto-l-gulonic acid in Ketogulonicigenium vulgare-Bacillus endophyticus consortium via genes screening. ACTA ACUST UNITED AC 2017; 44:1031-1040. [DOI: 10.1007/s10295-017-1928-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2016] [Accepted: 02/22/2017] [Indexed: 01/26/2023]
Abstract
Abstract
Defect in the amino acid biosynthetic pathways of Ketogulonicigenium vulgare, the producing strain for 2-keto-l-gulonic acid (2-KGA), is the key reason for its poor growth and low productivity. In this study, five different strains were firstly reconstructed by expressing absent genes in threonine, proline and histidine biosynthetic pathways for better 2-KGA productivity. When mono-cultured in the shake flasks, the strain SyBE_Kv02080002 expressing hsk from Gluconobacter oxydans in threonine biosynthetic pathway achieved the highest biomass and the titer increased by 25.13%. When co-cultured with Bacillus endophyticus, the fermentation cycle decreased by 28.57% than that of the original consortium in 5-L fermenter. Furthermore, reconstruction of threonine biosynthetic pathway resulted in up-regulation of genes encoding sorbosone dehydrogenase and idonate-dehydrogenase, which increased the 2-KGA productivity in SyBE_Kv02080002. This study shows that reconstruction of absent biosynthetic pathways in bacteria is an effective way to enhance the productivity of target products.
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21
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Tohidkia MR, Sepehri M, Khajeh S, Barar J, Omidi Y. Improved Soluble ScFv ELISA Screening Approach for Antibody Discovery Using Phage Display Technology. SLAS DISCOVERY 2017; 22:1026-1034. [PMID: 28346811 DOI: 10.1177/2472555217701059] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Phage display technology (PDT) is a powerful tool for the isolation of recombinant antibody (Ab) fragments. Using PDT, target molecule-specific phage-Ab clones are enriched through the "biopanning" process. The individual specific binders are screened by the monoclonal scFv enzyme-linked immunosorbent assay (ELISA) that may associate with inevitable false-negative results. Thus, in this study, three strategies were investigated for optimization of the scFvs screening using Tomlinson I and J libraries, including (1) optimizing the expression of functional scFvs, (2) improving the sensitivity of ELISA, and (3) preparing different samples containing scFvs. The expression of all scFv Abs was significantly enhanced when scFv clones were cultivated in the terrific broth (TB) medium at the optimum temperature of 30 °C. The protein A-conjugated with horseradish peroxidase (HRP) was found to be a well-suited reagent for the detection of Ag-bound scFvs in comparison with either anti-c-myc Ab or the mixing procedure. Based on our findings, it seems there is no universal media supplement for an improved expression of all scFvs derived from both Tomlinson I and J libraries. We thus propose that expression of scFv fragments in a microplate scale is largely dependent on a variety of parameters, in particular the scFv clones and relevant sequences.
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Affiliation(s)
- Mohammad R Tohidkia
- 1 Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Maryam Sepehri
- 1 Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran.,2 Department of Biochemistry, Higher Education Institute of Rab-Rashid, Tabriz, Iran
| | - Shirin Khajeh
- 1 Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Jaleh Barar
- 1 Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran.,3 Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Yadollah Omidi
- 1 Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran.,3 Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
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22
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Medium optimization for high yield production of extracellular human interferon-γ from Pichia pastoris: A statistical optimization and neural network-based approach. KOREAN J CHEM ENG 2017. [DOI: 10.1007/s11814-016-0358-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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23
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Wang N, Ren K, Jia R, Chen W, Sun R. Expression of a fungal manganese peroxidase in Escherichia coli: a comparison between the soluble and refolded enzymes. BMC Biotechnol 2016; 16:87. [PMID: 27908283 PMCID: PMC5134096 DOI: 10.1186/s12896-016-0317-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 11/23/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Manganese peroxidase (MnP) from Irpex lacteus F17 has been shown to have a strong ability to degrade recalcitrant aromatic pollutants. In this study, a recombinant MnP from I. lacteus F17 was expressed in Escherichia coli Rosetta (DE3) in the form of inclusion bodies, which were refolded to achieve an active enzyme. Further, we optimized the in vitro refolding conditions to increase the recovery yield of the recombinant protein production. Additionally, we attempted to express recombinant MnP in soluble form in E. coli, and compared its activity with that of refolded MnP. RESULTS Refolded MnP was obtained by optimizing the in vitro refolding conditions, and soluble MnP was produced in the presence of four additives, TritonX-100, Tween-80, ethanol, and glycerol, through incubation at 16 °C. Hemin and Ca2+ supplementation was crucial for the activity of the recombinant protein. Compared with refolded MnP, soluble MnP showed low catalytic efficiencies for Mn2+ and H2O2 substrates, but the two enzymes had an identical, broad range substrate specificity, and the ability to decolorize azo dyes. Furthermore, their enzymatic spectral characteristics were analysed by circular dichroism (CD), electronic absorption spectrum (UV-VIS), fluorescence and Raman spectra, indicating the differences in protein conformation between soluble and refolded MnP. Subsequently, size exclusion chromatography (SEC) and dynamic light scattering (DLS) analyses demonstrated that refolded MnP was a good monomer in solution, while soluble MnP predominantly existed in the oligomeric status. CONCLUSIONS Our results showed that two forms of recombinant MnP could be expressed in E. coli by varying the culture conditions during protein expression.
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Affiliation(s)
- Nan Wang
- School of Life Science, Anhui University, 111 Jiulong Road, Economic and Technology Development Zone, Hefei, Anhui, 230601, People's Republic of China
| | - Kai Ren
- School of Life Science, Anhui University, 111 Jiulong Road, Economic and Technology Development Zone, Hefei, Anhui, 230601, People's Republic of China
| | - Rong Jia
- School of Life Science, Anhui University, 111 Jiulong Road, Economic and Technology Development Zone, Hefei, Anhui, 230601, People's Republic of China.
| | - Wenting Chen
- School of Life Science, Anhui University, 111 Jiulong Road, Economic and Technology Development Zone, Hefei, Anhui, 230601, People's Republic of China
| | - Ruirui Sun
- School of Life Science, Anhui University, 111 Jiulong Road, Economic and Technology Development Zone, Hefei, Anhui, 230601, People's Republic of China
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24
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Bao RM, Yang HM, Yu CM, Zhang WF, Tang JB. An efficient protocol to enhance the extracellular production of recombinant protein from Escherichia coli by the synergistic effects of sucrose, glycine, and Triton X-100. Protein Expr Purif 2016; 126:9-15. [DOI: 10.1016/j.pep.2016.05.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Revised: 05/11/2016] [Accepted: 05/13/2016] [Indexed: 11/17/2022]
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25
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Kosciow K, Domin C, Schweiger P, Deppenmeier U. Extracellular targeting of an active endoxylanase by a TolB negative mutant of Gluconobacter oxydans. ACTA ACUST UNITED AC 2016; 43:989-99. [DOI: 10.1007/s10295-016-1770-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 03/26/2016] [Indexed: 01/28/2023]
Abstract
Abstract
Gluconobacter (G.) oxydans strains have great industrial potential due to their ability to incompletely oxidize a wide range of carbohydrates. But there is one major limitation preventing their full production potential. Hydrolysis of polysaccharides is not possible because extracellular hydrolases are not encoded in the genome of Gluconobacter species. Therefore, as a first step for the generation of exoenzyme producing G. oxydans, a leaky outer membrane mutant was created by deleting the TolB encoding gene gox1687. As a second step the xynA gene encoding an endo-1,4-β-xylanase from Bacillus subtilis was expressed in G. oxydans ΔtolB. More than 70 % of the total XynA activity (0.91 mmol h−1 l culture−1) was detected in the culture supernatant of the TolB mutant and only 10 % of endoxylanase activity was observed in the supernatant of G. oxydans xynA. These results showed that a G. oxydans strain with an increased substrate spectrum that is able to use the renewable polysaccharide xylan as a substrate to produce the prebiotic compounds xylobiose and xylooligosaccharides was generated. This is the first report about the combination of the process of incomplete oxidation with the degradation of renewable organic materials from plants for the production of value-added products.
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Affiliation(s)
- Konrad Kosciow
- grid.10388.32 0000000122403300 Institute of Microbiology and Biotechnology University of Bonn Meckenheimer Allee 168 53115 Bonn Germany
| | - Claudia Domin
- grid.10388.32 0000000122403300 Institute of Microbiology and Biotechnology University of Bonn Meckenheimer Allee 168 53115 Bonn Germany
| | - Paul Schweiger
- grid.260126.1 0000000107458995 Biology Department Missouri State University 901 S. National Ave 65897 Springfield MO USA
| | - Uwe Deppenmeier
- grid.10388.32 0000000122403300 Institute of Microbiology and Biotechnology University of Bonn Meckenheimer Allee 168 53115 Bonn Germany
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26
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Constitutive production and efficient secretion of soluble full-length streptavidin by an Escherichia coli ‘leaky mutant’. J Biotechnol 2016; 221:91-100. [DOI: 10.1016/j.jbiotec.2016.01.032] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2015] [Revised: 01/18/2016] [Accepted: 01/22/2016] [Indexed: 11/22/2022]
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27
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Zamani M, Nezafat N, Ghasemi Y. Evaluation of Recombinant Human Growth Hormone Secretion in E. coli using the L-asparaginase II Signal Peptide. Avicenna J Med Biotechnol 2016; 8:182-187. [PMID: 27920886 PMCID: PMC5124255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND In the recent years, there has been an increasing interest in secretory production of recombinant proteins, due to its various advantages compared with intracellular expression. Signal peptides play a critical role in prosperous secretion of recombinant proteins. Accordingly, different signal peptides have been assessed for their ability to produce secretory proteins by trial-and-error experiments. The aim of this study was to evaluate the effect of L-asparaginase II signal peptide on the recombinant human Growth Hormone (hGH) protein secretion in the Escherichia coli (E. coli) host. METHODS Cloning and expression of a synthetic hGH gene, containing L-asparaginase II signal sequence was performed in E. coli BL21 (DE3) using 0.1mM IPTG as an inducer at 23°C overnight. Periplasmic protein extraction was performed using three methods, including osmotic shock, osmotic shock in the presence of glycine and combined Lysozyme/EDTA osmotic shock. Afterwards, the hGH expression was determined by SDS-PAGE. RESULTS Based on experimentally obtained results, hGH protein is expressed as inclusion body even in the presence of L-asparaginase II signal peptide. CONCLUSION Therefore, this signal peptide is not effective for secretory production of the recombinant hGH.
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Affiliation(s)
- Mozhdeh Zamani
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran,Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Navid Nezafat
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Younes Ghasemi
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran,Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran,Corresponding author: Younes Ghasemi, Ph.D., Shiraz University of Medical Sciences, Shiraz, Iran, Tel: +98 917 7125495, E-mail:
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Khantasup K, Chantima W, Sangma C, Poomputsa K, Dharakul T. Design and Generation of Humanized Single-chain Fv Derived from Mouse Hybridoma for Potential Targeting Application. Monoclon Antib Immunodiagn Immunother 2015; 34:404-17. [PMID: 26683180 DOI: 10.1089/mab.2015.0036] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Single-chain variable antibody fragments (scFvs) are attractive candidates for targeted immunotherapy in several human diseases. In this study, a concise humanization strategy combined with an optimized production method for humanizing scFvs was successfully employed. Two antibody clones, one directed against the hemagglutinin of H5N1 influenza virus, the other against EpCAM, a cancer biomarker, were used to demonstrate the validity of the method. Heavy chain (VH) and light chain (VL) variable regions of immunoglobulin genes from mouse hybridoma cells were sequenced and subjected to the construction of mouse scFv 3-D structure. Based on in silico modeling, the humanized version of the scFv was designed via complementarity-determining region (CDR) grafting with the retention of mouse framework region (FR) residues identified by primary sequence analysis. Root-mean-square deviation (RMSD) value between mouse and humanized scFv structures was calculated to evaluate the preservation of CDR conformation. Mouse and humanized scFv genes were then constructed and expressed in Escherichia coli. Using this method, we successfully generated humanized scFvs that retained the targeting activity of their respective mouse scFv counterparts. In addition, the humanized scFvs were engineered with a C-terminal cysteine residue (hscFv-C) for site-directed conjugation for use in future targeting applications. The hscFv-C expression was extensively optimized to improve protein production yield. The protocol yielded a 20-fold increase in production of hscFv-Cs in E. coli periplasm. The strategy described in this study may be applicable in the humanization of other antibodies derived from mouse hybridoma.
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Affiliation(s)
- Kannika Khantasup
- 1 Research Division, Faculty of Medicine Siriraj Hospital, Mahidol University , Bangkok, Thailand
| | - Warangkana Chantima
- 2 Graduate Program in Immunology, Faculty of Medicine Siriraj Hospital, Mahidol University , Bangkok, Thailand .,4 National Nanotechnology Center , National Science and Technology Development Agency, Pathumthani, Thailand
| | - Chak Sangma
- 5 Department of Chemistry, Faculty of Science, Kasetsart University , Bangkok, Thailand
| | - Kanokwan Poomputsa
- 6 Biotechnology Program, School of Bioresources and Technology, King Mongkut's University of Technology , Bangkok, Thailand
| | - Tararaj Dharakul
- 3 Department of Immunology, Faculty of Medicine Siriraj Hospital, Mahidol University , Bangkok, Thailand .,4 National Nanotechnology Center , National Science and Technology Development Agency, Pathumthani, Thailand
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Zou C, Duan X, Wu J. Enhanced extracellular production of recombinant Bacillus deramificans pullulanase in Escherichia coli through induction mode optimization and a glycine feeding strategy. BIORESOURCE TECHNOLOGY 2014; 172:174-179. [PMID: 25261864 DOI: 10.1016/j.biortech.2014.09.035] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Revised: 09/04/2014] [Accepted: 09/06/2014] [Indexed: 06/03/2023]
Abstract
Process optimization strategies were developed to improve extracellular production of recombinant Bacillus deramificans pullulanase in Escherichia coli. Cell growth and pullulanase production in shake-flask cultures were investigated as a function of the concentration of added glycine, and the type and concentration of inducer. From the results of these experiments, a fed-batch fermentation strategy for high-cell-density cultivation was applied in a 3-L fermentor. The gradual addition of lactose was utilized for the induction of protein expression. The optimal lactose feeding rate and induction point were 0.4gL(-1)h(-1) and a dry cell weight (DCW) of 15gL(-1), respectively. Furthermore, a glycine feeding strategy was formulated to promote the secretion of recombinant protein. The optimal total and extracellular pullulanase activity were 2523.5 and 1567.9UmL(-1), respectively, which represent 1.2 and 22.6-fold increases compared with those observed under unoptimized conditions.
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Affiliation(s)
- Chun Zou
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; School of Biotechnology and Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Xuguo Duan
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; School of Biotechnology and Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Jing Wu
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; School of Biotechnology and Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China.
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Li B, Ye J, Lin Y, Wang M, Zhu J. Preparation and identification of a single-chain variable fragment antibody against Newcastle diseases virus F48E9. Vet Immunol Immunopathol 2014; 161:258-64. [DOI: 10.1016/j.vetimm.2014.08.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Revised: 07/15/2014] [Accepted: 08/12/2014] [Indexed: 11/16/2022]
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Liu Z, Tian L, Chen Y, Mou H. Efficient extracellular production of κ-carrageenase in Escherichia coli: effects of wild-type signal sequence and process conditions on extracellular secretion. J Biotechnol 2014; 185:8-14. [PMID: 24929200 DOI: 10.1016/j.jbiotec.2014.06.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 05/12/2014] [Accepted: 06/04/2014] [Indexed: 10/25/2022]
Abstract
Signal peptides direct proteins to translocate across the bacterial cytoplasmic membrane. This study aimed to improve the level of extracellular secretion of recombinant carrageenase by recombining the gene encoding wild-type signal peptide (OmpZ) of Zobellia sp. ZM-2 κ-carrageenase into the expression vector pProEX-HTa-cgkZ. The recombinant strain BL21-HTa-cgkZ achieved extracellular secretion of κ-carrageenase. The effects of induction, culture conditions, and additives were investigated to further promote the extracellular secretion of the enzyme. Results showed that the wild-type signal sequence secreted recombinant κ-carrageenase out of the cytoplasmic membrane. Low temperature (23 °C) and optimum isopropyl-β-thiogalactoside concentration (0.9 mM) favored soluble protein expression. Moreover, additives such as lactose, glycine, Tween-80, and TritonX-100 promoted the release of intracellular enzymes. The existence of OmpZ resulted in 51% of the total κ-carrageenase accumulation secreted into culture medium, and 33% accumulated in the periplasmic space. High extracellular secretion of recombinant κ-carrageenase under the optimum conditions showed promising applications of the process for extracellular protein production.
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Affiliation(s)
- Zhemin Liu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Lin Tian
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Yulin Chen
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Haijin Mou
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China.
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32
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Pournejati R, Karbalaei-Heidari HR, Budisa N. Secretion of recombinant archeal lipase mediated by SVP2 signal peptide in Escherichia coli and its optimization by response surface methodology. Protein Expr Purif 2014; 101:84-90. [PMID: 24907409 DOI: 10.1016/j.pep.2014.05.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2014] [Revised: 05/19/2014] [Accepted: 05/23/2014] [Indexed: 10/25/2022]
Abstract
Towards the targeting of recombinant Thermoanaerobacter thermohydrosulfuricus lipase (TtL) for secretion into the culture medium of Escherichia coli, we have investigated a combination of the archeal lipase gene with a Salinovibrio metalloprotease (SVP2) signal peptide sequence. The SVP2 signal peptide has shown all necessary features of a leader sequence for high level secretion of a recombinant target protein in E. coli. Two sets of primers were designed for amplification of the corresponding gene fragments by PCR. Firstly, the PCR product of the TtL gene with designed restriction sites of SacI and HindIII was cloned into pQE-80L plasmid, named as pQE80L-TtL. Afterwards, the amplified fragment of SVP2 signal peptide with EcoRI and SacI restriction sites was also cloned into pQE80L-TtL and the final construct pQE-STL was obtained. A study on the extracellular expression of recombinant STL revealed that most of the enzyme activity was located in the periplasmic space. Glycine and Triton X-100 were investigated to determine whether the leakage of recombinant STL from the outer membrane was promoted, and it was revealed that glycine has a positive effect. Statistical media optimization design was then applied to optimize the effect of seven factors including glycine, Triton X-100, IPTG, yeast extract concentration, incubation time, induction time, and temperature on the extracellular expression of STL. The optimum conditions for the secretion of the lipase was obtained by incubating recombinant E. coli BL21 cells in the medium supplemented by 1.27% glycine and 24h of incubation in the presence of 0.2mM IPTG concentration.
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Affiliation(s)
- Roya Pournejati
- Molecular Biotechnology Laboratory, Department of Biology, Faculty of Science, Shiraz University, Shiraz 71454, Iran
| | - Hamid Reza Karbalaei-Heidari
- Molecular Biotechnology Laboratory, Department of Biology, Faculty of Science, Shiraz University, Shiraz 71454, Iran; Institute of Biotechnology, Shiraz University, Shiraz, Iran.
| | - Nediljko Budisa
- Department of Biocatalysis, Institute of Chemistry, Technical University Berlin, Strasse des 17. Juni 135, 10623 Berlin, Germany
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Chen ZY, Cao J, Xie L, Li XF, Yu ZH, Tong WY. Construction of leaky strains and extracellular production of exogenous proteins in recombinant Escherichia coli. Microb Biotechnol 2014; 7:360-70. [PMID: 24779863 PMCID: PMC4241728 DOI: 10.1111/1751-7915.12127] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Revised: 03/26/2014] [Accepted: 03/27/2014] [Indexed: 11/30/2022] Open
Abstract
In this study, a strategy of the construction of leaky strains for the extracellular production of target proteins was exploited, in which the genes mrcA, mrcB, pal and lpp (as a control) from Escherichia coli were knocked out by using single- and/or double-gene deletion methods. Then the recombinant strains for the expression of exogenous target proteins including Trx-hPTH (human parathyroid hormone 1-84 coupled with thioredoxin as a fusion partner) and reteplase were reconstructed to test the secretory efficiency of the leaky strains. Finally, the fermentation experiments of the target proteins from these recombinant leaky strains were carried out in basic media (Modified R media) and complex media (Terrific Broth media) in flasks or fermenters. The results demonstrated that the resultant leaky strains were genetically stable and had a similar growth profile in the complex media as compared with the original strain, and the secretory levels of target proteins into Modified R media from the strains with double-gene deletion (up to 88.9%/mrcA lpp-pth) are higher than the excretory levels from the strains with single-gene deletion (up to 71.1%/lpp-pth) and the host E. coli JM109 (DE3) (near zero). The highest level of extracellular production of Trx-hPTH in fermenters is up to 680 mg l(-1).
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Affiliation(s)
- Zhao-Yuan Chen
- Integrated Biotechnology Laboratory, School of Life Sciences, Anhui University, Hefei, 230601, China
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34
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Freiherr von Roman M, Koller A, von Rüden D, Berensmeier S. Improved extracellular expression and purification of recombinant Staphylococcus aureus protein A. Protein Expr Purif 2014; 93:87-92. [DOI: 10.1016/j.pep.2013.10.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 10/21/2013] [Accepted: 10/22/2013] [Indexed: 10/26/2022]
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36
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Chen WB, Nie Y, Xu Y, Xiao R. Enhancement of extracellular pullulanase production from recombinant Escherichia coli by combined strategy involving auto-induction and temperature control. Bioprocess Biosyst Eng 2013; 37:601-8. [DOI: 10.1007/s00449-013-1026-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2013] [Accepted: 07/23/2013] [Indexed: 11/28/2022]
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37
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Sadraeian M, Ghoshoon MB, Mohkam M, Karimi Z, Rasoul-Amini S, Ghasemi Y. Modification in media composition to obtain secretory production of STxB-based vaccines using Escherichia coli. Virol Sin 2013; 28:43-8. [PMID: 23329470 DOI: 10.1007/s12250-013-3286-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2012] [Accepted: 01/05/2013] [Indexed: 11/24/2022] Open
Abstract
Shiga toxin B-subunit (STxB) from Shigella dysenteriae targets in vivo antigen to cancer cells, dendritic cells (DC) and B cells, which preferentially express the globotriaosylceramide (Gb3) receptor. This pivotal role has encouraged scientists to investigate fusing STxB with other clinical antigens. Due to the challenges of obtaining a functional soluble form of the recombinant STxB, such as formation of inclusion bodies during protein expression, scientists tend to combine STxB with vaccine candidates rather than using their genetically fused forms. In this work, we fused HPV16 E7 as a vaccine candidate to the recombinantly-produced STxB. To minimize the formation of inclusion bodies, we investigated a number of conditions during the expression procedure. Then various strategies were used in order to obtain high yield of soluble recombinant protein from E. coli which included the use of different host strains, reduction of cultivation temperature, as well as using different concentrations of IPTG and different additives (Glycin, Triton X-100, ZnCl(2)). Our study demonstrated the importance of optimizing incubation parameters for recombinant protein expression in E. coli; also showed that the secretion production can be achieved over the course of a few hours when using additives such as glycine and Triton X-100. Interestingly, it was shown that when the culture mediums were supplemented by additives, there was an inverse ratio between time of induction (TOI) and the level of secreted protein at lower temperatures. This study determines the optimal conditions for high yield soluble E7-STxB expression and subsequently facilitates reaching a functionally soluble form of STxB-based vaccines, which can be considered as a potent vaccine candidate for cervical cancer.
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Affiliation(s)
- Mohammad Sadraeian
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, P.O. Box 71345-1583, Iran
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38
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Li B, Wang L, Su L, Chen S, Li Z, Chen J, Wu J. Glycine and Triton X-100 enhanced secretion of recombinant α-CGTase mediated by OmpA signal peptide in Escherichia coli. BIOTECHNOL BIOPROC E 2013. [DOI: 10.1007/s12257-011-0601-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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39
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Antibody–cytokine fusion proteins. Arch Biochem Biophys 2012; 526:194-205. [DOI: 10.1016/j.abb.2012.03.001] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Revised: 02/28/2012] [Accepted: 03/01/2012] [Indexed: 01/01/2023]
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40
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Sun W, Xie J, Lin H, Mi S, Li Z, Hua F, Hu Z. A combined strategy improves the solubility of aggregation-prone single-chain variable fragment antibodies. Protein Expr Purif 2012; 83:21-9. [PMID: 22387083 DOI: 10.1016/j.pep.2012.02.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2012] [Revised: 02/03/2012] [Accepted: 02/08/2012] [Indexed: 02/03/2023]
Abstract
Recombinant single-chain variable fragment (scFv) antibodies have wide applications in the areas of biotechnology and medicine. However, there is currently no universal expression-purification system for generating different soluble scFvs. In this study, A15 and E34, two genes coding scFvs against human IL-17A, were fused with N-terminal signal peptide sequences pelB or STII, or with highly hydrophilic tags Trx, NusA, or MBP, respectively. These constructs were expressed in Escherichia coli. We found that the scFvs fused with either NusA or MBP showed a higher solubility than fused with signal peptides or Trx. The scFvs were aggregated when the NusA or MBP was removed by thrombin. Interestingly, we observed a reduction of precipitation when the fusion proteins were expressed in Origami B(DE3)pLysS cells but not in BL21(DE3)pLysS. Because cleaving the tags resulted in the aggregation of scFvs, several solubility-enhancing additives were added in the digestion buffer and only L-arginine (Arg) or Tween20 promoted the solubility. After an affinity chromatography, the scFvs were separated from the tags with the purity up to 90%. The final yield of scFvs from the scFv-MBP system was approximately 8.9 mg/L of culture medium and 1.5 mg/g of wet weight cells, which was 1.6-fold higher than the yield from the scFv-NusA system. The obtained scFvs exhibited normal binding affinities and activities after endotoxin removal. In conclusion, we describe a strategy combining the fusion tags, the Escherichia coli with oxidizing bacterial cytoplasm, and the solubility-enhancing additives for expressing and purifying the soluble and functional scFvs.
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Affiliation(s)
- Wei Sun
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, People's Republic of China
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41
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Golchin M, Khalili-Yazdi A, Karamouzian M, Abareghi A. Latex agglutination test based on single-chain Fv recombinant antibody fragment. Scand J Immunol 2012; 75:38-45. [PMID: 21916915 DOI: 10.1111/j.1365-3083.2011.02621.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Recombinant antibodies have been proposed as invaluable tools for various therapeutic and diagnostic purposes. Here, we describe the development of a novel latex agglutination test (LAT) using single-chain Fv recombinant antibody fragment for the detection of K99(+) enterotoxigenic Escherichia coli strains. For the production of a single-chain Fv antibody fragment (scFv) against the major colonization factor (FanC) of K99 antigen, the scFv gene was integrated into a bacterial expression vector under the control of T7 promoter. After high-level expression of soluble scFv (approximately 50 mg/l) in flask cultivation of E. coli DE3 and purification, scFv was immobilized on different latex particles, and then, these sensitized beads were used in LAT. Results obtained with our latex reagents revealed that the recombinant antibody-coated particles were able to give a good agglutination signal with purified antigen, intact cells displaying this protein and clinical specimens. The strength of agglutination of scFv-coated beads for antigen was comparable to that of polyclonal anti-K99-coated particles. However, the assay proved to be simple and rapid, similar to conventional LATs, and owing to more convenient and economical production of recombinant antibodies, they can be considered as a useful reagent for replacing monoclonal antibodies in LATs.
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Affiliation(s)
- M Golchin
- Faculty of Veterinary Medicine, Shahid Bahonar University of Kerman, Kerman, Iran.
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42
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Industrial production of recombinant therapeutics in Escherichia coli and its recent advancements. J Ind Microbiol Biotechnol 2012; 39:383-99. [PMID: 22252444 DOI: 10.1007/s10295-011-1082-9] [Citation(s) in RCA: 270] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2011] [Accepted: 12/29/2011] [Indexed: 12/14/2022]
Abstract
Nearly 30% of currently approved recombinant therapeutic proteins are produced in Escherichia coli. Due to its well-characterized genetics, rapid growth and high-yield production, E. coli has been a preferred choice and a workhorse for expression of non-glycosylated proteins in the biotech industry. There is a wealth of knowledge and comprehensive tools for E. coli systems, such as expression vectors, production strains, protein folding and fermentation technologies, that are well tailored for industrial applications. Advancement of the systems continues to meet the current industry needs, which are best illustrated by the recent drug approval of E. coli produced antibody fragments and Fc-fusion proteins by the FDA. Even more, recent progress in expression of complex proteins such as full-length aglycosylated antibodies, novel strain engineering, bacterial N-glycosylation and cell-free systems further suggests that complex proteins and humanized glycoproteins may be produced in E. coli in large quantities. This review summarizes the current technology used for commercial production of recombinant therapeutics in E. coli and recent advances that can potentially expand the use of this system toward more sophisticated protein therapeutics.
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43
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Gao Y, Yuan YJ. Comprehensive quality evaluation of corn steep liquor in 2-keto-L-gulonic acid fermentation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:9845-9853. [PMID: 21793578 DOI: 10.1021/jf201792u] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Corn steep liquor (CSL) is one of the main raw materials in 2-keto-L-gulonic acid (2-KLG) fermentation by Ketogulonicigenium vulgare and Bacillus megaterium . Due to its natural origin and variations in the manufacturing process, unpredicted and uncontrolled variability of CSL has a great influence on 2-KLG production; however, conventional quality specifications are not enough to ensure stability of fermentation behaviors. A process analytical technology (PAT) could be considered to explore the relationship between CSL quality and 2-KLG production comprehensively. The compositions of CSL from six manufacturers were profiled by gas chromatography with time-of-flight mass spectrometry (GC-TOFMS) and inductively coupled plasma-atomic emission spectroscopy (ICP-AES), combined with orthogonal partial least-squares discriminant analysis (OPLS-DA). Seventeen components were identified as the most discriminant marker compounds related to 2-KLG production. Results revealed that they were responsible for providing nutrients and protecting osmotic pressure. Furthermore, nine amino acids were verified as potential group markers by addition to the medium and demonstration of the correlation to 2-KLG production. The comprehensive approach provided an important platform to explore CSL marker compounds for quality evaluation in 2-KLG fermentation.
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Affiliation(s)
- Yun Gao
- Key Laboratory of Systems Bioengineering, Tianjin University, Ministry of Education, Department of Pharmaceutical Engineering, School of Chemical Engineering and Technology, P.O. Box 6888, Tianjin 300072, People's Republic of China
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Kotzsch A, Vernet E, Hammarström M, Berthelsen J, Weigelt J, Gräslund S, Sundström M. A secretory system for bacterial production of high-profile protein targets. Protein Sci 2011; 20:597-609. [PMID: 21308845 DOI: 10.1002/pro.593] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Escherichia coli represents a robust, inexpensive expression host for the production of recombinant proteins. However, one major limitation is that certain protein classes do not express well in a biologically relevant form using standard expression approaches in the cytoplasm of E. coli. To improve the usefulness of the E. coli expression platform we have investigated combinations of promoters and selected N-terminal fusion tags for the extracellular expression of human target proteins. A comparative study was conducted on 24 target proteins fused to outer membrane protein A (OmpA), outer membrane protein F (OmpF) and osmotically inducible protein Y (OsmY). Based on the results of this initial study, we carried out an extended expression screen employing the OsmY fusion and multiple constructs of a more diverse set of human proteins. Using this high-throughput compatible system, we clearly demonstrate that secreted biomedically relevant human proteins can be efficiently retrieved and purified from the growth medium.
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Affiliation(s)
- Alexander Kotzsch
- Facility for Protein Science and Technology, The Novo Nordisk Foundation Center for Protein Research, Faculty of Health Sciences, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen N, Denmark.
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Study on Improvement of Extracellular Production of Recombinant Thermobifida fusca Cutinase by Escherichia coli. Appl Biochem Biotechnol 2011; 165:666-75. [DOI: 10.1007/s12010-011-9286-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2010] [Accepted: 05/06/2011] [Indexed: 11/25/2022]
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46
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High yield secretion of heterologous proteins in Corynebacterium glutamicum using its own Tat-type signal sequence. Appl Microbiol Biotechnol 2011; 91:677-87. [PMID: 21523478 DOI: 10.1007/s00253-011-3281-8] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2011] [Revised: 03/15/2011] [Accepted: 03/26/2011] [Indexed: 10/18/2022]
Abstract
Efficient protein secretion, the basis of large-scale production of many compounds central to the biotechnology industry, is achieved by signal peptide and propeptide optimization in addition to optimizing host factors affecting heterologous protein production. Here, we fused green fluorescent protein (GFP) to the recently identified Tat-type secretory signal peptide of CgR0949 to demonstrate a high-yield protein secretion system of Corynebacterium glutamicum. The resultant secretion vector facilitated effective secretion of active-form GFP (20 mg l(-1)) into C. glutamicum culture medium. The expression of GFP was enhanced 2.9-fold using the Shine-Dalgarno sequence of triosephosphate isomerase in the secretion vector. Moreover, GFP drastically accumulated in the culture supernatant upon addition of calcium chloride even though Ca(2+) addition did neither enhanced the transcription of gfp nor resulted in the accumulation of cytosolic GFP. Active-form GFP concentration reached 1.8 g l(-1) after 48-h incubation in a jar fermentor. Likewise, α-amylase accumulation in C. glutamicum cultures was also enhanced by Ca(2+) addition, suggesting that Ca(2+) may affect general protein secretion in C. glutamicum.
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47
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Zhang J, Zhou J, Liu J, Chen K, Liu L, Chen J. Development of chemically defined media supporting high cell density growth of Ketogulonicigenium vulgare and Bacillus megaterium. BIORESOURCE TECHNOLOGY 2011; 102:4807-4814. [PMID: 21296571 DOI: 10.1016/j.biortech.2010.10.124] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2010] [Revised: 10/24/2010] [Accepted: 10/25/2010] [Indexed: 05/30/2023]
Abstract
The immediate precursor of L-ascorbic acid, or vitamin C, is 2-keto-L-gulonic acid (2-KLG). This is commonly produced commercially by Ketogulonicigenium vulgare and Bacillus megaterium, using corn steep liquor powder (CSLP) as an organic nitrogen source. In this study, the effects of the individual CSLP components (amino acids, vitamins, and metal elements) on 2-KLG production were evaluated, with the aim of developing a complete, chemically defined medium for 2-KLG production. Forty components of CSLP were analyzed, and key components were correlated to biomass, 2-KLG productivity, and consumption rate of L-sorbose. Glycine had the greatest effect, followed by serine, biotin, proline, nicotinic acid, and threonine. The combination of 0.28 g L(-1) serine, 0.36 g L(-1) glycine, 0.18 g L(-1) threonine, 0.28 g L(-1) proline, 0.19 g L(-1) nicotinic acid, and 0.62 mg L(-1)biotin in a chemically defined medium produced the highest maximum biomass concentration (4.2 × 10(9) cfu mL(-1)), 2-KLG concentration (58 g L(-1)), and yield (0.76 g g(-1)) after culturing for 28 h.
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Affiliation(s)
- Jing Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
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Yang T, Yang L, Chai W, Li R, Xie J, Niu B. A strategy for high-level expression of a single-chain variable fragment against TNFα by subcloning antibody variable regions from the phage display vector pCANTAB 5E into pBV220. Protein Expr Purif 2011; 76:109-14. [DOI: 10.1016/j.pep.2010.10.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2010] [Revised: 10/08/2010] [Accepted: 10/08/2010] [Indexed: 10/18/2022]
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Jafari R, Holm P, Sandegren J, Stigbrand T, Sundström BE. Localization of complexed anticytokeratin 8 scFv TS1-218 to HeLa HEp-2 multicellular tumor spheroids and experimental tumors. Cancer Biother Radiopharm 2011; 25:455-63. [PMID: 20707717 DOI: 10.1089/cbr.2010.0785] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Recombinant single-chain fragment variable (scFv) antibodies with specificity to tumor antigens can be used to target tumors in vivo. The approach to use administration of complexes of idiotypic-anti-idiotypic scFvs when targeting tumors has not been tested earlier, and from a theoretical point it could contribute to longer in vivo circulation and improved targeting efficiency by dissociation, when in contact with the target antigen. In this study two models to evaluate the targeting efficiency of such complexes were used. HeLa HEp-2 tumor cells were grown as multicellular tumor spheroids (MCTS) and exposed to the antibody constructs in vitro. The behavior in vivo was tested in an in vivo tumor xenograft model. To increase the size of the anticytokeratin 8 scFv, TS1-218, complexes were formed between TS1-218 and its anti-idiotype, alphaTS1 scFv. The functionality of (125)I-labeled TS1-218 alone and in complex was studied in both models. The uptake patterns were similar in both models. The idiotypic TS1-218 was able to localize to the MCTS and xenografted tumors, both alone and in complex with alphaTS1 scFv. TS1-218 in complex, however, demonstrated a significantly higher uptake than the monomeric TS1-218 in both models (p < 0.0005 and p < 0.0089, respectively). When complexes were administered in vivo, a slower clearance and an increased tumor half-life could be observed. The present investigation indicates that administration of targeting antibodies, with initially blocked antigen-binding sites by complex formation with their anti-idiotypes, may improve targeting efficiency.
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Affiliation(s)
- Rozbeh Jafari
- Department of Chemistry and Biomedical Sciences, Karlstad University, Sweden
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Erlandsson A, Holm P, Jafari R, Stigbrand T, Sundström BE. Functional mapping of the anti-idiotypic antibody anti-TS1 scFv using site-directed mutagenesis and kinetic analysis. MAbs 2010; 2:662-9. [PMID: 21124071 DOI: 10.4161/mabs.2.6.13275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Recombinant antibodies may be engineered to obtain improved functional properties. Functional mapping of the residues in the binding surfaces is of importance for predicting alterations needed to yield the desired properties. In this investigation, 17 single mutation mutant single-chain variable fragments (scFvs) of the anti-idiotypic antibody anti-TS1 were generated in order to functionally map amino acid residues important for the interaction with its idiotype TS1. Residues in anti-TS1 determined to be very important for the interaction were identified, Y32L, K50L, K33H, and Y52H, and they were distributed adjacent to a centrally located hydrophobic area, and contributed extensively to the interaction energy (≥2.5 kcal/mol) in the interaction. Quantitative ELISA assays, BIAcore technologies and three-dimensional surface analysis by modeling were employed to visualize the consequences of the mutations. The expression levels varied between 2 - 1,800 nM as determined by ELISA. All the 17 scFvs displayed higher dissociation rates (60 - 1,300 times) and all but two of them also faster association rates (1.3 - 56 times). The decrease in affinity was determined to be 1.6 - 12,200 times. Two of the mutants displayed almost identical affinity with the wild type anti-TS1, but with a change in both association and dissociation rates. The present investigation demonstrates that it is possible to generate a large panorama of anti-idiotypic antibodies, and single out a few that might be of potential use for future clearing and pre-targeting purposes of idiotypic-anti-idiotypic interactions.
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Affiliation(s)
- Ann Erlandsson
- Department of Chemistry and Biomedical Sciences, Karlstad University, Karlstad, Sweden
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