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Wang J, Bao C, Cao H, Huang F, Liu Y, Cao Y. Multi-copy expression of a protease-resistant xylanase with high xylan degradation ability and its application in broilers fed wheat-based diets. Int J Biol Macromol 2024; 257:128633. [PMID: 38070812 DOI: 10.1016/j.ijbiomac.2023.128633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 11/27/2023] [Accepted: 12/03/2023] [Indexed: 01/26/2024]
Abstract
The acidic thermostable xylanase (AT-xynA) has great potential in the feed industry, but its low activity is not conductive to large-scale production, and its application in poultry diets still needs to be further evaluated. In Experiment1, AT-xynA activity increased 3.10 times by constructing multi-copy strains, and the highest activity reached 10,018.29 ± 91.18 U/mL. AT-xynA showed protease resistance, high specificity for xylan substrates, xylobiose and xylotriose were the main hydrolysates. In Experiment2, 192 broilers were assigned into 3 treatments including a wheat-based diet, and the diets supplemented with AT-xynA during the entire period (XY-42) or exclusively during the early stage (XY-21). AT-xynA improved growth performance, while the performance of XY-21 and XY-42 was identical. To further clarify the mechanism underlying the particular effectiveness of AT-xynA during the early stage, 128 broilers were allotted into 2 treatments including a wheat-based diet and the diet supplemented with AT-xynA for 42 d in Experiment3. AT-xynA improved intestinal digestive function and microbiota composition, the benefits were stronger in younger broilers than older ones. Overall, the activity of AT-xynA exhibiting protease resistance and high xylan degradation ability increased by constructing multi-copy strains, and AT-xynA was particularly effective in improving broiler performance during the early stage.
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Affiliation(s)
- Jian Wang
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, People's Republic of China; Department of Nutrition and Health, China Agricultural University, Beijing 100091, People's Republic of China
| | - Chengling Bao
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, People's Republic of China
| | - Heng Cao
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, People's Republic of China
| | - Fei Huang
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, People's Republic of China
| | - Yajing Liu
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, People's Republic of China
| | - Yunhe Cao
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, People's Republic of China.
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Zhang H, Zhang D, Lu H, Zou D, Hu B, Lian S, Lu S. Antiviral activity of mink interferon alpha expressed in the yeast Pichia pastoris. Front Vet Sci 2022; 9:976347. [PMID: 36187832 PMCID: PMC9515496 DOI: 10.3389/fvets.2022.976347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 08/04/2022] [Indexed: 11/20/2022] Open
Abstract
Many viruses can cause infections in mink, including canine distemper virus, mink enteritis virus, and Aleutian disease virus. Current treatments are ineffective, and these infections are often fatal, causing severe economic losses. As antiviral drugs may effectively prevent and control these infections, recent research has increasingly focused on antiviral interferons. Herein, the gene encoding a mature mink interferon alpha (MiIFN-α) was synthesized according to the P. pastoris preference of codon usage and a recombinant plasmid, pPICZαA-MiIFN-α, was constructed. pPICZαA-MiIFN-α was linearized and transformed into the P. pastoris X33 strain, and zeocin-resistant transformants were selected. Protein expression was induced by methanol. SDS-PAGE and western blot analyses showed that a 25-kDa fusion protein was expressed in the culture supernatant. Antiviral activity of the expressed protein was determined using cytopathic effect inhibition (CPEI). The purified MiIFN-α significantly inhibited the cytopathic effect of vesicular stomatitis virus with a green fluorescent protein (VSV-GFP) in F81 feline kidney cells, with an antiviral activity of 6.4 × 107 IU/mL; it also significantly inhibited MEV replication in F81 cells. MiIFN-α antiviral activity against VSV-GFP was significantly reduced on treatment with pH 4 and pH 10 conditions for 24 h (p < 0.01). Serum MiIFN-α concentrations in rat were measured using enzyme-linked immune-sorbent assay; MiIFN-α concentrations in rat serum peaked at ~36 h after injection. A high dose of MiIFN-α was safe for use. There were no significant differences in body temperature, tissue changes, and lymphocyte, total white blood cell, and central granulocyte counts between the injected and control groups (p > 0.05). These findings lay a foundation for the large-scale production of recombinant MiIFNs.
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Affiliation(s)
- Hailing Zhang
- Key Laboratory of Zoonosis, Ministry of Education, College of Animal Science and Veterinary Medicine, Institute of Zoonosis, Jilin University, Changchun, China
- Key Laboratory of Special Animal Epidemic Disease, Ministry of Agriculture, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Dongliang Zhang
- Key Laboratory of Special Animal Epidemic Disease, Ministry of Agriculture, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Han Lu
- Key Laboratory of Special Animal Epidemic Disease, Ministry of Agriculture, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Deying Zou
- Key Laboratory of Zoonosis, Ministry of Education, College of Animal Science and Veterinary Medicine, Institute of Zoonosis, Jilin University, Changchun, China
| | - Bo Hu
- Key Laboratory of Special Animal Epidemic Disease, Ministry of Agriculture, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Shizhen Lian
- Key Laboratory of Special Animal Epidemic Disease, Ministry of Agriculture, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Shiying Lu
- Key Laboratory of Zoonosis, Ministry of Education, College of Animal Science and Veterinary Medicine, Institute of Zoonosis, Jilin University, Changchun, China
- *Correspondence: Shiying Lu
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Zhang Q, Wang C, Ma F, Yao L, Gao H, Zhu L, Zheng L. Development and biological activity of long-acting recombinant human interferon-α2b. BMC Biotechnol 2020; 20:16. [PMID: 32169063 PMCID: PMC7071744 DOI: 10.1186/s12896-020-00605-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 02/13/2020] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND The type I human interferon (IFN) family consists of a group of cytokines with a multiplicity of biological activities, including antiviral, antitumor, and immunomodulatory effects. However, because the half-life of IFN is short, its clinical application is limited. Increasing the yield and biological activity of IFN while extending its half-life is currently the focus of IFN research. RESULTS Two novel long-acting recombinant human IFN-α2b (rhIFN-α2b) proteins were designed in which the carboxyl-terminal peptide (CTP) of the human chorionic gonadotropin β su bunit and N-linked glycosylation sequences were linked to rhIFN-α2b. They were designated IFN-1CTPON (fused at the C-terminus of rhIFN-α2b) and IFN-2CTPON (fused at both the C-terminus and N-terminus of rhIFN-α2b). Monoclonal CHO cell strains stably and efficiently expressing the IFNs were successfully selected with methotrexate (MTX), and the highest expression levels were 1468 mg/l and 1196 mg/l for IFN-1CTPON and IFN-2CTPON, respectively. The proteins were purified with affinity chromatography and molecular sieve chromatography. IFN-1CTPON and IFN-2CTPON showed antiviral and antiproliferative activities in vitro. Notably, the half-life of IFN-1CTPON and IFN-2CTPON in vivo were three-fold and two-fold longer than that of commercially available rhIFN-α2b. CONCLUSIONS CHO cell strains stably expressing long-acting rhIFN-α2b were screened. The purified IFN-CTPON protein has biological activity and an extended half-life, and therefore potential applications.
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Affiliation(s)
- Qian Zhang
- NHC Key Laboratory of Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, 100052, China
| | - Chao Wang
- NHC Key Laboratory of Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, 100052, China
| | - Fenlian Ma
- NHC Key Laboratory of Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, 100052, China
| | - Lihong Yao
- NHC Key Laboratory of Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, 100052, China
| | - Hanchun Gao
- NHC Key Laboratory of Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, 100052, China
| | - Luyan Zhu
- Beijing Furen Ruihui Biomedical Research Institute Co.,Ltd, Beijing, 100176, China.
| | - Lishu Zheng
- NHC Key Laboratory of Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, 100052, China.
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Naseem MU, Ahmed N, Khan MA, Tahir S, Zafar AU. Production of potent long-lasting consensus interferon using albumin fusion technology in Pichia pastoris expression system. Protein Expr Purif 2019; 166:105509. [PMID: 31604114 DOI: 10.1016/j.pep.2019.105509] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 09/14/2019] [Accepted: 10/06/2019] [Indexed: 11/15/2022]
Abstract
Consensus interferon (cIFN) is a wholly synthetic therapeutic protein which is used to treat hepatitis C/B and certain types of malignancies. It has short serum half-life, therefore, to maintain its therapeutic level in the human body it requires thrice-weekly administration. Various strategies like PEGylation and micro-encapsulation have been developed during the last few years to enhance the pharmacokinetics of small therapeutic peptides. This study executed the human albumin-fusion technology, a simple and flexible approach to extend the serum circulating half-life of cIFN, because human serum albumin (HSA) has long circulating half-life (19 days) and very minute immunological activities. We integrated the codon-optimized HSA-cIFN fusion gene into Pichia pastoris genome by homologous recombination. The selection of hyper-resistant P. pastoris clone against Zeocin™ achieved a high-level secretory expression (250 mg/L) of fusion protein. HSA-cIFN fusion protein was purified using one-step purification by affinity chromatography with 34% recovery. The SDS-PAGE and SEC-HPLC analysis confirmed the final purified product has molecular weight of 87 kDa with 98% purity. Western blot analysis using anti-IFN antibodies further verified the purified HSA-cIFN fusion protein. The specific biological activity was 2.1 × 106 IU/mg as assessed by cytopathic inhibition assay, and half-life of fusion protein was estimated by in vitro thermal and proteolytic stability studies. This work concludes that by using albumin fusion technology, codon optimization and one-step purification a high yield of 86 mg/L of biologically active protein with improved serum half-life was obtained.
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Affiliation(s)
- Muhammad Umair Naseem
- National Centre of Excellence in Molecular Biology (NCEMB), University of the Punjab, 87 West Canal Bank Road, Thokar Niazbaig, Lahore 53700, Pakistan; Department of Biophysics and Cell Biology, Doctoral School of Molecular Medicine, University of Debrecen, Egyetem ter 1. Debrecen 4032, Hungary.
| | - Nadeem Ahmed
- National Centre of Excellence in Molecular Biology (NCEMB), University of the Punjab, 87 West Canal Bank Road, Thokar Niazbaig, Lahore 53700, Pakistan
| | - Mohsin Ahmad Khan
- National Centre of Excellence in Molecular Biology (NCEMB), University of the Punjab, 87 West Canal Bank Road, Thokar Niazbaig, Lahore 53700, Pakistan
| | - Saad Tahir
- National Centre of Excellence in Molecular Biology (NCEMB), University of the Punjab, 87 West Canal Bank Road, Thokar Niazbaig, Lahore 53700, Pakistan
| | - Ahmad Usman Zafar
- National Centre of Excellence in Molecular Biology (NCEMB), University of the Punjab, 87 West Canal Bank Road, Thokar Niazbaig, Lahore 53700, Pakistan
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Dias PVS, Arthuso FS, Oliveira JE, Suzuki MF, Sousa JM, Ribela MTCP, Bartolini P, Soares CRJ. Determination of recombinant Interferon-α2 in E. coli periplasmic extracts by reversed-phase high-performance liquid chromatography. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1072:193-198. [PMID: 29179059 DOI: 10.1016/j.jchromb.2017.11.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 11/09/2017] [Accepted: 11/18/2017] [Indexed: 11/30/2022]
Abstract
Reversed-phase high-performance liquid chromatography (RP-HPLC) has been used to analyze Interferon α-2 (IFN-α2) as a pure protein or as a pharmaceutical preparation: a method for analyzing periplasmic IFN-α2 directly in osmotic shock extract has, however, never been reported. This work describes an RP-HPLC methodology for the qualitative and quantitative analysis of human IFN-α2a and IFN-α2b directly in bacterial periplasmic extracts or in purified preparations. The analytical method has been set up and validated for accuracy, precision, linearity, sensitivity and specificity. A recovery test indicated an average bias of ∼1%, intra-day and inter-day quantitative determinations presented relative standard deviations always≤5%, while the working sensitivity was of ∼0.3μg of IFN-α2 (RSD=5%). The method proved to be suitable for detecting and quantifying also glycosylated and oxidized forms and N-methionylated IFN-α2 molecules, it was, however, not able to distinguish between IFN-α2a and IFN-α2b. This rapid methodology allows the application of RP-HPLC as a powerful tool to monitor the production yield and quality of IFN-α2 in osmotic shock fluids, right after, or even during the fermentation process.
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Affiliation(s)
- Paulo V S Dias
- Biotechnology Center, Instituto de Pesquisas Energéticas e Nucleares, IPEN - CNEN/SP, São Paulo, Brazil
| | - Fernanda S Arthuso
- Biotechnology Center, Instituto de Pesquisas Energéticas e Nucleares, IPEN - CNEN/SP, São Paulo, Brazil
| | - João E Oliveira
- Biotechnology Center, Instituto de Pesquisas Energéticas e Nucleares, IPEN - CNEN/SP, São Paulo, Brazil
| | - Miriam F Suzuki
- Biotechnology Center, Instituto de Pesquisas Energéticas e Nucleares, IPEN - CNEN/SP, São Paulo, Brazil
| | - José M Sousa
- Biotechnology Center, Instituto de Pesquisas Energéticas e Nucleares, IPEN - CNEN/SP, São Paulo, Brazil
| | - Maria Teresa C P Ribela
- Biotechnology Center, Instituto de Pesquisas Energéticas e Nucleares, IPEN - CNEN/SP, São Paulo, Brazil
| | - Paolo Bartolini
- Biotechnology Center, Instituto de Pesquisas Energéticas e Nucleares, IPEN - CNEN/SP, São Paulo, Brazil
| | - Carlos R J Soares
- Biotechnology Center, Instituto de Pesquisas Energéticas e Nucleares, IPEN - CNEN/SP, São Paulo, Brazil.
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Liu W, Zhao W, Lai J, Shen Q, Xu Y, Pan L, Chen S. RSM optimization of HSA/IL1Ra in Pichia pastoris overexpression strain and study of its in vivo activity in reducing hyperglycemia of GK rats. Biotechnol Appl Biochem 2016; 64:627-637. [PMID: 27572239 DOI: 10.1002/bab.1532] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Accepted: 08/25/2016] [Indexed: 12/28/2022]
Abstract
Human serum albumin (HSA) and interleukin-1 receptor antagonist (IL1Ra) fusion protein is a potential long-acting drug in the treatment of type 2 diabetes. Previously, the expression level of HSA/IL1Ra in Pichia pastoris was successfully improved by increasing the gene copy number and coexpression with chaperone (protein disulfide isomerase) in our laboratory. However, the overexpression strain resulted in low production of high- cell-density fermentation. In this study, the culture medium was optimized in both flask and fermenter, and the optimum culture medium notably increased the productivity and stability of HSA/IL1Ra. To further improve the expression, response surface methodology was used to further optimize the culture condition through modeling three selected parameters (induction pH, induction temperature [T], and maximum methanol feed rate [Vm ]). The maximum yield of HSA/IL1Ra reached 1.1 g/L (10-fold higher than original fermentation condition) under the optimized culture condition (pH 7.0, T = 29 ℃ and Vm = 4.82 mL/L/H) in a 5-L fermenter. In addition, the degradation position of HSA/IL1Ra during fermentation was determined to be K571, serving as a potential target for genetic modification strategies to reduce the degradation. Finally, the in vivo activity study showed that HSA/IL1Ra maintained the therapeutic effect of IL1Ra in type 2 diabetes model rats meanwhile reducing the frequency of administration.
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Affiliation(s)
- Wenhui Liu
- Department of Drug Metabolism and Drug Analysis, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, People's Republic of China
| | - Wenbin Zhao
- Department of Drug Metabolism and Drug Analysis, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, People's Republic of China
| | - Jun Lai
- Department of Drug Metabolism and Drug Analysis, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, People's Republic of China
| | - Qi Shen
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX, USA
| | - Yingchun Xu
- Department of Drug Metabolism and Drug Analysis, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, People's Republic of China
| | - Liqiang Pan
- Department of Drug Metabolism and Drug Analysis, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, People's Republic of China
| | - Shuqing Chen
- Department of Drug Metabolism and Drug Analysis, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, People's Republic of China
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High-level expression and characterization of a novel serine protease in Pichia pastoris by multi-copy integration. Enzyme Microb Technol 2016; 92:56-66. [PMID: 27542745 DOI: 10.1016/j.enzmictec.2016.06.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Revised: 05/26/2016] [Accepted: 06/11/2016] [Indexed: 01/31/2023]
Abstract
A novel serine protease from Trichoderma koningii (SPTK) was synthesized and expressed in Pichia pastoris. The recombinant SPTK was completely inhibited by phenyl methyl sulfonyl fluoride (PMSF), suggesting that SPTK belonged to the subgroup of serine proteases. The optimum pH and temperature for the recombinant SPTK reaction were 6.0 and 55°C, respectively. SPTK performed a tolerance to most organic solvents and metal ions, and the addition of Triton X-100 exhibited an activation of SPTK up to 243% of its initial activity but SDS strongly inhibited. Moreover, our study showed that a portion of SPTK was N-glycosylated during fermentation. The activity and thermal stability of the recombinant SPTK were improved after the removal of glycosylation, and the N-glycosylation of SPTK could be efficiently removed through co-culture with P. pastoris strains expressing Endo-β-N-acetylglucosaminidase H. We constructed expression vectors harboring from one to four repeats of Sptk-expressing cassettes via an in vitro BioBrick assembly approach. And the result of quantitative polymerase chain reaction (qPCR) indicated that the tandem expression cassettes were integrated into the genome of P. pastoris through a single recombination event. These strains were used to study the correlation between the gene copy number and the expression level of SPTK. The results of qPCR and enzyme activity assays indicated that the copy number variation of Sptk gene generally had a positive effect on the expression level of SPTK, while an increase in integration of target gene did not guarantee its high expression. The maximum yield and specific activity of SPTK in P. pastoris were obtained from the recombinant yeast strain harboring two-copy tandem Sptk-expressing cassettes, the yield reached 0.48g/l after a 6-d induction using menthol in shake flasks and 3.2g/l in high-density fermentation with specific activity of 5200U/mg. In addition, the recombinant SPTK could efficiently degrade chicken feather and hydrolyzed the gelatin layer of photographic film. These properties made the recombinant SPTK a suitable candidate for industrial applications and for eliminating the pollution of keratin.
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Shen W, Shu M, Ma L, Ni H, Yan H. High level expression of organophosphorus hydrolase in Pichia pastoris by multicopy ophcM assembly. Protein Expr Purif 2016; 119:110-6. [DOI: 10.1016/j.pep.2015.11.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Accepted: 11/15/2015] [Indexed: 02/03/2023]
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