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Razali R, Fahrudin FA, Subbiah VK, Takano K, Budiman C. Heterologous Expression and Catalytic Properties of Codon-Optimized Small-Sized Bromelain from MD2 Pineapple. Molecules 2022; 27:molecules27186031. [PMID: 36144767 PMCID: PMC9502857 DOI: 10.3390/molecules27186031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 09/03/2022] [Accepted: 09/08/2022] [Indexed: 11/29/2022] Open
Abstract
Bromelain is a unique enzyme-based bioactive complex containing a mixture of cysteine proteases specifically found in the stems and fruits of pineapple (Ananas comosus) with a wide range of applications. MD2 pineapple harbors a gene encoding a small bromelain cysteine protease with the size of about 19 kDa, which might possess unique properties compared to the other cysteine protease bromelain. This study aims to determine the expressibility and catalytic properties of small-sized (19 kDa) bromelain from MD2 pineapple (MD2-SBro). Accordingly, the gene encoding MD2-SBro was firstly optimized in its codon profile, synthesized, and inserted into the pGS-21a vector. The insolubly expressed MD2-SBro was then resolubilized and refolded using urea treatment, followed by purification by glutathione S-transferase (GST) affinity chromatography, yielding 14 mg of pure MD2-SBro from 1 L of culture. The specific activity and catalytic efficiency (kcat/Km) of MD2-SBro were 3.56 ± 0.08 U mg−1 and 4.75 ± 0.23 × 10−3 µM−1 s−1, respectively, where optimally active at 50 °C and pH 8.0, and modulated by divalent ions. The MD2-SBro also exhibited the ability to scavenge the 2,2-diphenyl-1-picryl-hydrazyl-hydrate (DPPH) with an IC50 of 0.022 mg mL−1. Altogether, this study provides the production feasibility of active and functional MD2-Bro as a bioactive compound.
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Affiliation(s)
- Rafida Razali
- Biotechnology Research Institute, Universiti Malaysia Sabah, Kota Kinabalu 88400, Sabah, Malaysia
| | - Fikran Aranda Fahrudin
- Biotechnology Research Institute, Universiti Malaysia Sabah, Kota Kinabalu 88400, Sabah, Malaysia
| | - Vijay Kumar Subbiah
- Biotechnology Research Institute, Universiti Malaysia Sabah, Kota Kinabalu 88400, Sabah, Malaysia
| | - Kazufumi Takano
- Department of Biomolecular Chemistry, Kyoto Prefectural University, Hangi-cho, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan
| | - Cahyo Budiman
- Biotechnology Research Institute, Universiti Malaysia Sabah, Kota Kinabalu 88400, Sabah, Malaysia
- Correspondence:
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Wang J, Xia X, Zhao P, He X, Zhang S, Wang T, Xu Z. High-level secretory production of lysostaphin in Escherichia coli mutant by codon optimization and atmospheric and room temperature plasma mutagenesis. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Delgadillo-Gutiérrez K, Castelán-Vega JA, Jiménez-Alberto A, Fernández-Lizárraga MDC, Aparicio-Ozores G, Monterrubio-López GP, Ribas-Aparicio RM. Characterization and use in neutralization assays of avian influenza codon-optimized H5 and H7 retroviral pseudotypes. J Virol Methods 2021; 300:114391. [PMID: 34890710 DOI: 10.1016/j.jviromet.2021.114391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 11/12/2021] [Accepted: 11/27/2021] [Indexed: 10/19/2022]
Abstract
Influenza is a relevant problem for public and animal health, with a significant economic impact. In recent years, outbreaks of avian influenza virus have resulted in devastating losses in the poultry industry worldwide, and although its transmission to humans is very rare, there is always a potential risk for an even more severe outbreak. Currently, vaccination is considered the most effective tool for the control and prevention of influenza infections in both humans and animals. The maintenance of animal welfare and the successful implementation of animal health programs depend on the timely administration of vaccines, which must comply with quality specifications indicated by health authorities; for example, the capability to ensure a minimum antibody titer. The production of viral antigens used in these tests can pose a biosafety risk, and some viral strains can be difficult to grow. Therefore, new biotechnological alternatives are required to overcome these disadvantages. In this study, we produced pseudotypes carrying H5 and H7 hemagglutinins from lowly and highly pathogenic avian influenza viruses. These pseudotypes were used in neutralization assays to detect neutralizing antibodies in avian sera, which were confirmed positive by inhibition of the hemagglutination test. Our results showed that the pseudotype neutralization assay is a viable alternative for the detection of neutralizing antibodies, by demonstrating subtype specificity and requiring reduced biosafety requirements. Therefore, it represents a versatile platform that can facilitate technology transfer protocols between laboratories, and an immediate application in serological tools for quality control of veterinary vaccines against avian influenza.
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Affiliation(s)
- Karen Delgadillo-Gutiérrez
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional (IPN), Mexico City, Mexico
| | - Juan Arturo Castelán-Vega
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional (IPN), Mexico City, Mexico
| | - Alicia Jiménez-Alberto
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional (IPN), Mexico City, Mexico
| | | | - Gerardo Aparicio-Ozores
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional (IPN), Mexico City, Mexico
| | - Gloria Paulina Monterrubio-López
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional (IPN), Mexico City, Mexico
| | - Rosa María Ribas-Aparicio
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional (IPN), Mexico City, Mexico.
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Soluble Expression and Catalytic Properties of Codon-Optimized Recombinant Bromelain from MD2 Pineapple in Escherichia coli. Protein J 2021; 40:406-418. [PMID: 33713245 DOI: 10.1007/s10930-021-09974-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/03/2021] [Indexed: 01/15/2023]
Abstract
Bromelain, a member of cysteine proteases, is found abundantly in pineapple (Ananas comosus), and it has a myriad of versatile applications. However, attempts to produce recombinant bromelain for commercialization purposes are challenging due to its expressibility and solubility. This study aims to express recombinant fruit bromelain from MD2 pineapple (MD2Bro; accession no: OAY85858.1) in soluble and active forms using Escherichia coli host cell. The gene encoding MD2Bro was codon-optimized, synthesized, and subsequently ligated into pET-32b( +) for further transformation into Escherichia coli BL21-CodonPlus(DE3). Under this strategy, the expressed MD2Bro was in a fusion form with thioredoxin (Trx) tag at its N-terminal (Trx-MD2Bro). The result showed that Trx-MD2Bro was successfully expressed in fully soluble form. The protein was successfully purified using single-step Ni2+-NTA chromatography and confirmed to be in proper folds based on the circular dichroism spectroscopy analysis. The purified Trx-MD2Bro was confirmed to be catalytically active against N-carbobenzoxyglycine p-nitrophenyl ester (N-CBZ-Gly-pNP) with a specific activity of 6.13 ± 0.01 U mg-1 and inhibited by a cysteine protease inhibitor, E-64 (IC50 of 74.38 ± 1.65 nM). Furthermore, the catalytic efficiency (kcat/KM) Trx-MD2Bro was calculated to be at 5.64 ± 0.02 × 10-2 µM-1 s-1 while the optimum temperature and pH were at 50 °C and pH 6.0, respectively. Furthermore, the catalytic activity of Trx-MD2Bro was also affected by ethylenediaminetetraacetic acid (EDTA) or metal ions. Altogether it is proposed that the combination of codon optimization and the use of an appropriate vector are important in the production of a soluble and actively stable recombinant bromelain.
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Bachmann M, Ortega-Ramírez A, Leisle L, Gründer S. Efficient expression of a cnidarian peptide-gated ion channel in mammalian cells. Channels (Austin) 2021; 15:273-283. [PMID: 33522420 PMCID: PMC7889164 DOI: 10.1080/19336950.2021.1882762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Abstract
Hydra Na+ channels (HyNaCs) are peptide-gated ion channels of the DEG/ENaC gene family that are directly activated by neuropeptides of the Hydra nervous system. They have previously been successfully characterized in Xenopus oocytes. To establish their expression in mammalian cells, we transiently expressed heteromeric HyNaC2/3/5 in human HEK 293 and monkey COS-7 cells. We found that the expression of HyNaC2/3/5 using native cDNAs was inefficient and that codon optimization strongly increased protein expression and current amplitude in patch-clamp experiments. We used the improved expression of codon-optimized channel subunits to perform Ca2+ imaging and to demonstrate their glycosylation pattern. In summary, we established efficient expression of a cnidarian ion channel in mammalian cell lines.
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Affiliation(s)
- Michèle Bachmann
- Department of Physiology, RWTH Aachen University , Aachen, Germany
| | | | - Lilia Leisle
- Department of Physiology, RWTH Aachen University , Aachen, Germany
| | - Stefan Gründer
- Department of Physiology, RWTH Aachen University , Aachen, Germany
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Xu L, Zhou J, Qu G, Lin Z, Fan Q, Wang C, Wang Q. Recombinant lactobacillin PlnK adjusts the gut microbiome distribution in broilers. Br Poult Sci 2020; 61:390-399. [PMID: 32302217 DOI: 10.1080/00071668.2020.1752911] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
1. The heterologous expression and biological function of the Lactobacillus bacteriocin plantaricin K (PlnK) remain largely unknown. 2. In this study, PlnK was efficiently expressed in competent E. coli BL21 (used in transformation and protein expression) after 12 h, at 37°C and in 0.4 mmol/l isopropyl β- d-1-thiogalactopyranoside (IPTG). 3. The inhibitory bacterial spectrum of recombinant PlnK was investigated and indicated that levels of PlnK above 0.10 mg/ml produced an obvious inhibitory effect on gram-positive bacteria and gram-negative bacteria in vitro. 4. The effects of PlnK on intestinal immune function and the gut microbiome distribution in broilers were studied. The results revealed that, after consuming 2.50 × 10-3 mg/ml of PlnK in water for one week, at the phylum level, the abundance of Firmicutes was increased and the abundance of Bacleroidetes was decreased. At the family level, the abundance of Lachnospiraceae, Ruminococcaceae and Streptococcaceae were significantly improved, but the abundance of Bacteroidaceae was reduced. At the genus level, the abundances of Lachnoclostridium, Streptococcus and Ruminococcaceae-UCG-013, were significantly up-regulated, and the abundance of Bacteroides was down-regulated. 5. After oral liquid intake of PlnK for one week, levels of secretory immunoglobulin A (sIgA) in the duodenal mucus were not significantly increased, but the mRNA levels of TLR3, MDA5, IFN-α, IFN-β, IFITM3 and IFITM10 in the duodenum were significantly reduced. 6. This study demonstrated that the recombinant PlnK could adjust the intestinal microbiome distribution and downregulate the IFN pathway.
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Affiliation(s)
- L Xu
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University , Fuzhou, P.R. China
| | - J Zhou
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University , Fuzhou, P.R. China
| | - G Qu
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University , Fuzhou, P.R. China
| | - Z Lin
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University , Fuzhou, P.R. China
| | - Q Fan
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University , Fuzhou, P.R. China
| | - C Wang
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University , Fuzhou, P.R. China
| | - Q Wang
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University , Fuzhou, P.R. China.,Fujian Key Laboratory of Traditional Chinese Veterinary Medicine and Animal Health, Fujian Agriculture and Forestry University, Fuzhou , Fujian, P.R. China
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Fei D, Guo Y, Fan Q, Li M, Sun L, Ma M, Li Y. Codon optimization, expression in Escherichia coli, and immunogenicity analysis of deformed wing virus (DWV) structural protein. PeerJ 2020; 8:e8750. [PMID: 32201647 PMCID: PMC7071823 DOI: 10.7717/peerj.8750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 02/14/2020] [Indexed: 11/20/2022] Open
Abstract
Background Deformed wing virus (DWV) is a serious threat to honey bees (Apis mellifera) and is considered a major cause of elevated losses of honey bee colonies. However, lack of information on the immunogenicity of DWV structural proteins has hindered the development of effective biocontrol drugs. Methods We optimized the VP1, VP2 and VP3 codons of DWV surface capsid protein genes on the basis of an Escherichia coli codon bias, and the optimized genes of roVP1, roVP2 and roVP3 were separately expressed in E. coli and purified. Next, the three recombinant proteins of roVP1, roVP2 and roVP3 were intramuscularly injected into BALB/c and the immunogenicity was evaluated by the levels of specific IgG and cytokines. Furthermore, anti-roVP-antisera (roVP1 or roVP2 or roVP3) from the immunized mice was incubated with DWV for injecting healthy white-eyed pupae for the viral challenge test, respectively. Results The optimized genes roVP1, roVP2 and roVP3 achieved the expression in E. coli using SDS-PAGE and Western blotting. Post-immunization, roVP2 and roVP3 exhibited higher immunogenicity than roVP1 and stimulated a stronger humoral immune response in the mice, which showed that the recombinant proteins of roVP3 and roVP2 induced a specific immune response in the mice. In the challenge test, data regarding quantitative real-time RT-PCR (qRT-PCR) from challenged pupae showed that the level of virus copies in the recombinant protein groups was significantly lower than that of the virus-only group at 96 h post-inoculation (P < 0.05). Among them, the degree of neutralization using antibodies raised to the recombinant proteins are between approximately 2-fold and 4-fold and the virus copies of the roVP3 group are the lowest in the three recombinant protein groups, which indicated that specific antibodies against recombinant proteins roVP1, roVP2 and roVP3 of DWV could neutralize DWV to reduce the virus titer in the pupae. Collectively, these results demonstrated that the surface capsid protein of DWV acted as candidates for the development of therapeutic antibodies against the virus.
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Affiliation(s)
- Dongliang Fei
- College of Animal Medicine, Northeast Agricultural University, Haerbin, Heilongjiang, China
- Laboratory Animal Center, Jinzhou Normal University, Jinzhou, Liaoning, China
| | - Yaxi Guo
- College of Animal Medicine, Northeast Agricultural University, Haerbin, Heilongjiang, China
| | - Qiong Fan
- Jinzhou Agricultural and Rural Comprehensive Service Center, Jinzhou, Liaoning, China
| | - Ming Li
- Laboratory Animal Center, Jinzhou Normal University, Jinzhou, Liaoning, China
| | - Li Sun
- Laboratory Animal Center, Jinzhou Normal University, Jinzhou, Liaoning, China
| | - Mingxiao Ma
- Laboratory Animal Center, Jinzhou Normal University, Jinzhou, Liaoning, China
| | - Yijing Li
- College of Animal Medicine, Northeast Agricultural University, Haerbin, Heilongjiang, China
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Gai W, Zheng X, Wang C, Wang H, Zhao Y, Wang Q, Wong G, Zhang W, Feng N, Qiu B, Chi H, Li N, Wang T, Gao Y, Shan J, Yang S, Xia X. Marburg virus-like particles by co-expression of glycoprotein and matrix protein in insect cells induces immune responses in mice. Virol J 2017; 14:204. [PMID: 29070075 PMCID: PMC5657058 DOI: 10.1186/s12985-017-0869-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 10/12/2017] [Indexed: 06/14/2023] Open
Abstract
Background Marburg virus (MARV) causes severe haemorrhagic fever in humans and nonhuman primates and has a high mortality rate. However, effective drugs or licensed vaccines are not currently available to control the outbreak and spread of this disease. Methods In this study, we generated MARV virus-like particles (VLPs) by co-expressing the glycoprotein (GP) and matrix protein (VP40) using the baculovirus expression system. MARV VLPs and three adjuvants, Poria cocos polysaccharide (PCP-II), poly(I:C) and aluminium hydroxide, were evaluated after intramuscular vaccination in mice. Results Murine studies demonstrated that vaccination with the MARV VLPs induce neutralizing antibodies and cellar immune responses. MARV VLPs and the PCP-II adjuvant group resulted in high titres of MARV-specific antibodies, activated relatively higher numbers of B cells and T cells in peripheral blood mononuclear cells (PBMCs), and induced greater cytokine secretion from splenocytes than the other adjuvants. Conclusion MARV VLPs with the PCP-II adjuvant may constitute an effective vaccination and PCP-II should be further investigated as a novel adjuvant.
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Affiliation(s)
- Weiwei Gai
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, China.,Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
| | - Xuexing Zheng
- School of Public Health, Shandong University, Jinan, China
| | - Chong Wang
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Hualei Wang
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
| | - Yongkun Zhao
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
| | - Qi Wang
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China.,College of Animal Science and Technology, Shihezi University, Shihezi, China
| | - Gary Wong
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Weijiao Zhang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, China.,Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
| | - Na Feng
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
| | - Boning Qiu
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, China.,Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
| | - Hang Chi
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
| | - Nan Li
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
| | - Tiecheng Wang
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
| | - Yuwei Gao
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
| | - Junjie Shan
- Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing, China. .,Department of Virology, Institute of Military Veterinary, Academy of Military Medical Sciences, 666 Liuying West Road, Changchun, Jilin, 130012, People's Republic of China.
| | - Songtao Yang
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China. .,Department of Virology, Institute of Military Veterinary, Academy of Military Medical Sciences, 666 Liuying West Road, Changchun, Jilin, 130012, People's Republic of China.
| | - Xianzhu Xia
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China. .,Department of Virology, Institute of Military Veterinary, Academy of Military Medical Sciences, 666 Liuying West Road, Changchun, Jilin, 130012, People's Republic of China.
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Tuan-Anh T, Ly LT, Viet NQ, Bao PT. Novel methods to optimize gene and statistic test for evaluation - an application for Escherichia coli. BMC Bioinformatics 2017; 18:100. [PMID: 28187713 PMCID: PMC5303253 DOI: 10.1186/s12859-017-1517-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Accepted: 02/01/2017] [Indexed: 11/18/2022] Open
Abstract
Background Since the recombinant protein was discovered, it has become more popular in many aspects of life science. The value of global pharmaceutical market was $87 billion in 2008 and the sales for industrial enzyme exceeded $4 billion in 2012. This is strong evidence showing the great potential of recombinant protein. However, native genes introduced into a host can cause incompatibility of codon usage bias, GC content, repeat region, Shine-Dalgarno sequence with host’s expression system, so the yields can fall down significantly. Hence, we propose novel methods for gene optimization based on neural network, Bayesian theory, and Euclidian distance. Result The correlation coefficients of our neural network are 0.86, 0.73, and 0.90 in training, validation, and testing process. In addition, genes optimized by our methods seem to associate with highly expressed genes and give reasonable codon adaptation index values. Furthermore, genes optimized by the proposed methods are highly matched with the previous experimental data. Conclusion The proposed methods have high potential for gene optimization and further researches in gene expression. We built a demonstrative program using Matlab R2014a under Mac OS X. The program was published in both standalone executable program and Matlab function files. The developed program can be accessed from http://www.math.hcmus.edu.vn/~ptbao/paper_soft/GeneOptProg/.
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Affiliation(s)
- Tran Tuan-Anh
- Faculty of Mathematics and Computer Science, VNUHCM-University of Science, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
| | - Le Thi Ly
- School of Biotechnology, VNUHCM-International University, Quarter 6, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Vietnam
| | - Ngo Quoc Viet
- Faculty of Information Technology, Ho Chi Minh City University of Pedagogy, 280 An Duong Vuong Street, Ward 4, District 5, Ho Chi Minh City, Vietnam
| | - Pham The Bao
- Faculty of Mathematics and Computer Science, VNUHCM-University of Science, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam.
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Microbial inhibitors of cysteine proteases. Med Microbiol Immunol 2016; 205:275-96. [DOI: 10.1007/s00430-016-0454-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Accepted: 03/24/2016] [Indexed: 01/06/2023]
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11
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Fei D, Zhang H, Diao Q, Jiang L, Wang Q, Zhong Y, Fan Z, Ma M. Codon Optimization, Expression in Escherichia coli, and Immunogenicity of Recombinant Chinese Sacbrood Virus (CSBV) Structural Proteins VP1, VP2, and VP3. PLoS One 2015; 10:e0128486. [PMID: 26067659 PMCID: PMC4466328 DOI: 10.1371/journal.pone.0128486] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2015] [Accepted: 04/27/2015] [Indexed: 11/26/2022] Open
Abstract
Chinese sacbrood virus (CSBV) is a small RNA virus family belonging to the genus Iflavirus that causes larval death, and even the collapse of entire bee colonies. The virus particle is spherical, non-enveloped, and its viral capsid is composed of four proteins, although the functions of the structural proteins are unclear. In this study, we used codon recoding to express the recombinant proteins VP1, VP2, and VP3 in Escherichia coli. SDS-PAGE analysis and Western blotting revealed that the target genes were expressed at high levels. Mice were then immunized with the purified, recombinant proteins, and antibody levels and lymphocyte proliferation were analyzed by ELISA and the MTT assay, respectively. The results show that the recombinant proteins induced high antibody levels and promoted lymphocyte proliferation. Polyclonal antibodies directed against these proteins will aid future studies of the molecular pathogenesis of CSBV.
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Affiliation(s)
- Dongliang Fei
- Animal Husbandry and Veterinary Institute, Liaoning Medical University, Jinzhou, China
| | - Haochun Zhang
- Animal Husbandry and Veterinary Institute, Liaoning Medical University, Jinzhou, China
| | - Qingyun Diao
- Honeybee Research Institute, the Chinese Academy of Agricultural Sciences, Beijing, China
| | - Lili Jiang
- Animal Husbandry and Veterinary Institute, Liaoning Medical University, Jinzhou, China
| | - Qiang Wang
- Liaoning Water Conservancy Vocational College, Shenyang, China
| | - Yi Zhong
- Animal Husbandry and Veterinary Institute, Liaoning Medical University, Jinzhou, China
| | - Zhaobin Fan
- Animal Husbandry and Veterinary Institute, Liaoning Medical University, Jinzhou, China
| | - Mingxiao Ma
- Animal Husbandry and Veterinary Institute, Liaoning Medical University, Jinzhou, China
- * E-mail:
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Šnajder M, Mihelič M, Turk D, Ulrih NP. Codon optimisation is key for pernisine expression in Escherichia coli. PLoS One 2015; 10:e0123288. [PMID: 25856104 PMCID: PMC4391949 DOI: 10.1371/journal.pone.0123288] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Accepted: 02/17/2015] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Pernisine is an extracellular serine protease from the hyperthermophilic Archaeon Aeropyrum pernix K1. Low yields from the natural host and expression problems in heterologous hosts have limited the potential applications of pernisine in industry. METHODOLOGY/ PRINCIPAL FINDINGS The challenges of pernisine overexpression in Escherichia coli were overcome by codon preference optimisation and de-novo DNA synthesis. The following forms of the pernisine gene were cloned into the pMCSGx series of vectors and expressed in E. coli cells: wild-type (pernisinewt), codon-optimised (pernisineco), and codon-optimised with a S355A mutation of a predicted active site (pernisineS355Aco). The fusion-tagged pernisines were purified using fast protein liquid chromatography equipped with Ni2+ chelate and gel filtration chromatography columns. The identities of the resultant proteins were confirmed with N-terminal sequencing, tandem mass spectrometry analysis, and immunodetection. Pernisinewt was not expressed in E. coli at detectable levels, while pernisineco and pernisineS355Aco were expressed and purified as 55-kDa proforms with yields of around 10 mg per litre E. coli culture. After heat activation of purified pernisine, the proteolytic activity of the mature pernisineco was confirmed using zymography, at a molecular weight of 36 kDa, while the mutant pernisineS355Aco remained inactive. Enzymatic performances of pernisine evaluated under different temperatures and pHs demonstrate that the optimal enzymatic activity of the recombinant pernisine is ca. 100°C and pH 7.0, respectively. CONCLUSIONS/ SIGNIFICANCE These data demonstrate that codon optimisation is crucial for pernisine overexpression in E. coli, and that the proposed catalytic Ser355 has an important role in pernisine activity, but not in its activation process. Pernisine is activated by autoproteolytical cleavage of its N-terminal proregion. We have also confirmed that the recombinant pernisine retains the characteristics of native pernisine, as a calcium modulated thermostable serine protease.
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Affiliation(s)
- Marko Šnajder
- Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Marko Mihelič
- Centre of Excellence for Integrated Approaches in Chemistry and Biology (CipKeBiP), Ljubljana, Slovenia
- Institute Jozef Stefan, Ljubljana, Slovenia
| | - Dušan Turk
- Centre of Excellence for Integrated Approaches in Chemistry and Biology (CipKeBiP), Ljubljana, Slovenia
- Institute Jozef Stefan, Ljubljana, Slovenia
| | - Nataša Poklar Ulrih
- Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
- Centre of Excellence for Integrated Approaches in Chemistry and Biology (CipKeBiP), Ljubljana, Slovenia
- * E-mail:
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Imani Fooladi AA, Bagherpour G, Khoramabadi N, Fallah Mehrabadi J, Mahdavi M, Halabian R, Amin M, Izadi Mobarakeh J, Einollahi B. Cellular immunity survey against urinary tract infection using pVAX/fimH cassette with mammalian and wild type codon usage as a DNA vaccine. Clin Exp Vaccine Res 2014; 3:185-93. [PMID: 25003092 PMCID: PMC4083071 DOI: 10.7774/cevr.2014.3.2.185] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Revised: 02/04/2014] [Accepted: 02/15/2014] [Indexed: 12/01/2022] Open
Abstract
Purpose FimH (the adhesion fragment of type 1 fimbriae) is implicated in uropathogenic Escherichia coli (UPEC) attachment to epithelial cells through interaction with mannose. Recently, some studies have found that UPEC can thrive intracellularly causing recurrent urinary tract infection (UTI). Almost all vaccines have been designed to induce antibodies against UPEC. Yet, the humoral immune response is not potent enough to overcome neither the primary UTI nor recurrent infections. However, DNA vaccines offer the possibility of inducing cell mediated immune responses and may be a promising preventive tool. Materials and Methods In this study, we employed two different open reading frames within mammalian (mam) and wild type (wt) codons of fimH gene. Optimized fragments were cloned in pVAX-1. Expression of the protein in COS-7 was confirmed by western blot analysis after assessing pVAX/fimH(mam) and pVAX/fimH(wt). The constructs were injected to BALB/c mice at plantar surface of feet followed by electroporation. Results The mice immunized with both constructs following booster injection with recombinant FimH showed increased interferon-γ and interleukin-12 responses significantly higher than non-immunized ones (p<0.05). The immunized mice were challenged with UPEC and then the number of bacteria recovered from the immunized mice was compared with the non-immunized ones. Decreased colony count in immunized mice along with cytokine responses confirmed the promising immune response by the DNA vaccines developed in this study. Conclusion In conclusion, DNA vaccines of UPEC proteins may confer some levels of protection which can be improved by multiple constructs or boosters.
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Affiliation(s)
- Abbas Ali Imani Fooladi
- Applied Microbiology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Ghasem Bagherpour
- Applied Microbiology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Nima Khoramabadi
- Bacteriology Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Jalil Fallah Mehrabadi
- Department of Genetic Engineering, Faculty of Biosciences and Biotechnology, Malekashtar University of Technology, Tehran, Iran
| | - Mehdi Mahdavi
- Department of Virology, Pasteur Institute of Iran, Tehran, Iran
| | - Raheleh Halabian
- Applied Microbiology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Mohsen Amin
- Department of Drug and Food Control, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Behzad Einollahi
- Nephrology and Urology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
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14
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Ding J, Yi Y, Su Q, Qiu F, Jia Z, Bi S. High expression of small hepatitis D antigen in Escherichia coli and ELISA for diagnosis of hepatitis D virus. J Virol Methods 2014; 197:34-8. [DOI: 10.1016/j.jviromet.2013.10.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Revised: 09/29/2013] [Accepted: 10/01/2013] [Indexed: 11/30/2022]
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15
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Bidokhti MRM, Ullman K, Jensen TH, Chriél M, Mottahedin A, Munir M, Andersson AM, Detournay O, Hammer AS, Baule C. Establishment of stably transfected cells constitutively expressing the full-length and truncated antigenic proteins of two genetically distinct mink astroviruses. PLoS One 2013; 8:e82978. [PMID: 24376619 PMCID: PMC3871642 DOI: 10.1371/journal.pone.0082978] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2013] [Accepted: 11/01/2013] [Indexed: 01/06/2023] Open
Abstract
Astroviruses are becoming a growing concern in veterinary and public health. To date there are no registered vaccines against astrovirus-induced disease, mostly due to the difficulty to cultivate astroviruses to high titer for vaccine development using conventional techniques. As means to circumvent this drawback, we have developed stably transfected mink fetal cells and BHK21 cells constitutively expressing the full-length and truncated capsid proteins of two distinct genotypes of mink astrovirus. Protein expression in these stably transfected cells was demonstrated by strong signals as evaluated by in-situ PLA and IFA, and confirmed by Western blotting. The recombinant full-length and truncated proteins induced a high level of antibodies in mink, evaluated by ELISA, demonstrating their immunogenicity. In a challenge experiment in mink, a reduction in presentation clinical signs and virus shedding was observed in mink kits born from immunized females. The gene integration and protein expression were sustained through cell passage, showing that the used approach is robust and reliable for expression of functional capsid proteins for vaccine and diagnostic applications.
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Affiliation(s)
- Mehdi R. M. Bidokhti
- Joint R&D Division of Virology, Department of Virology, Immunobiology and Parasitology, The National Veterinary Institute (SVA), Uppsala, Sweden
| | - Karin Ullman
- Joint R&D Division of Virology, Department of Virology, Immunobiology and Parasitology, The National Veterinary Institute (SVA), Uppsala, Sweden
| | - Trine H. Jensen
- Division of Veterinary Diagnostics and Research, National Veterinary Institute, Technical University of Denmark, Copenhagen, Denmark
| | - Mariann Chriél
- Division of Veterinary Diagnostics and Research, National Veterinary Institute, Technical University of Denmark, Copenhagen, Denmark
| | - Amin Mottahedin
- Joint R&D Division of Virology, Department of Virology, Immunobiology and Parasitology, The National Veterinary Institute (SVA), Uppsala, Sweden
| | - Muhammad Munir
- Department of Biomedical Sciences and Veterinary Public Health, Division of Virology, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Anna Maria Andersson
- The National Veterinary Institute, Department of Animal Health and Antimicrobial Resistance, Uppsala, Sweden
| | - Olivier Detournay
- Joint R&D Division of Virology, Department of Virology, Immunobiology and Parasitology, The National Veterinary Institute (SVA), Uppsala, Sweden
| | - Anne Sofie Hammer
- Division of Veterinary Diagnostics and Research, National Veterinary Institute, Technical University of Denmark, Copenhagen, Denmark
| | - Claudia Baule
- Joint R&D Division of Virology, Department of Virology, Immunobiology and Parasitology, The National Veterinary Institute (SVA), Uppsala, Sweden
- * E-mail:
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