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Liu C, Zhang Y, Ye C, Zhao F, Chen Y, Han S. Combined strategies for improving the heterologous expression of a novel xylanase from Fusarium oxysporum Fo47 in Pichia pastoris. Synth Syst Biotechnol 2024; 9:426-435. [PMID: 38601209 PMCID: PMC11004072 DOI: 10.1016/j.synbio.2024.03.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 03/03/2024] [Accepted: 03/17/2024] [Indexed: 04/12/2024] Open
Abstract
Xylanase, an enzyme capable of hydrolyzing non-starch polysaccharides found in grain structures like wheat, has been found to improve the organizational structure of dough and thus increase its volume. In our past work, one promising xylanase FXYL derived from Fusarium oxysporum Fo47 and first expressed 779.64 U/mL activity in P. pastoris. It has shown significant potential in improving the quality of whole wheat bread, making it become a candidate for development as a new flour improver. After optimization of expression elements and gene dose, the xylanase activity of FXYL strain carrying three-copies reached 4240.92 U/mL in P. pastoris. In addition, 12 factors associated with the three stages of protein expression pathway were co-expressed individually in order in three-copies strain, and the translation factor Pab1 co-expression increased FXYL activity to 8893.53 U/mL. Nevertheless, combining the most effective or synergistic factors from three stages did not exhibit better results than co-expressing them alone. To further evaluate the industrial potential, the xylanase activity and protein concentration reached 81184.51 U/mL and 11.8 g/L in a 5 L fed-batch fermenter. These engineering strategies improved the expression of xylanase FXYL by more than 104-fold, providing valuable insights for the cost-effective industrial application of FXYL in the baking field.
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Affiliation(s)
- Chun Liu
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Yaping Zhang
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Chunting Ye
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Fengguang Zhao
- School of Light Industry and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Yian Chen
- School of Light Industry and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Shuangyan Han
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, 510640, China
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Huang J, Zhao Q, Chen L, Zhang C, Bu W, Zhang X, Zhang K, Yang Z. Improved production of recombinant Rhizomucor miehei lipase by coexpressing protein folding chaperones in Pichia pastoris, which triggered ER stress. Bioengineered 2020; 11:375-385. [PMID: 32175802 PMCID: PMC7161542 DOI: 10.1080/21655979.2020.1738127] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Rhizomucor miehei lipase (RML) is a biocatalyst that widely used in laboratory and industrial. Previously, RML with a 70-amino acid propeptide (pRML) was cloned and expressed in P. pastoris. Recombinant strains with (strain containing 4-copy prml) and without ER stress (strain containing 2-copy prml) were obtained. However, the effective expression of pRML in P. pastoris by coexpressing ER-related elements in pRML-produced strain with or without ER stress has not been reported to date. In this study, an efficient way to produce functional pRML was explored in P. pastoris. The coexpression of protein folding chaperones, including PDI and ERO1, in different strains with or without ER stress, was investigated. PDI overexpression only increased pRML production in 4-copy strain from 705 U/mL to 1430 U/mL because it alleviated the protein folded stress, increased the protein concentration from 0.56 mg/mL to 0.65 mg/mL, and improved enzyme-specific activity from 1238 U/mg to 2186 U/mg. However, PDI coexpression could not improve pRML production in the 2-copy strain because it increased protein folded stress, while ERO1 coexpression in the two strains all had a negative effect on pRML expression. We also investigated the effect of the propeptide on the substrate specificity and the condition for pRML enzyme powder preparation. Results showed that the relative activity exceeded 80% when the substrates C8–C10 were detected at 35°C and pH 6, and C8–C12 at 45°C and pH 8. The optimal enzyme powder preparation pH was 7, and the maximum recovery rate for pRML was 73.19%.
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Affiliation(s)
- Jinjin Huang
- The key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Sciences, Jiangsu Normal University, Xuzhou, P. R. China.,State Key Laboratory of Agrobiotechnology and MOA Key Laboratory of Soil Microbiology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Qingyi Zhao
- The key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Sciences, Jiangsu Normal University, Xuzhou, P. R. China
| | - Lingxiao Chen
- The key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Sciences, Jiangsu Normal University, Xuzhou, P. R. China
| | - Chunmei Zhang
- The key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Sciences, Jiangsu Normal University, Xuzhou, P. R. China
| | - Wei Bu
- The key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Sciences, Jiangsu Normal University, Xuzhou, P. R. China
| | - Xin Zhang
- The key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Sciences, Jiangsu Normal University, Xuzhou, P. R. China
| | - Kaini Zhang
- The key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Sciences, Jiangsu Normal University, Xuzhou, P. R. China
| | - Zhen Yang
- State Key Laboratory of Agrobiotechnology and MOA Key Laboratory of Soil Microbiology, College of Biological Sciences, China Agricultural University, Beijing, China
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Hu J, Jin J, Qu Y, Liu W, Ma Z, Zhang J, Chen F. ERO1α inhibits cell apoptosis and regulates steroidogenesis in mouse granulosa cells. Mol Cell Endocrinol 2020; 511:110842. [PMID: 32376276 DOI: 10.1016/j.mce.2020.110842] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 04/27/2020] [Accepted: 04/27/2020] [Indexed: 12/30/2022]
Abstract
ER oxidoreduclin 1α (ERO1α), an oxidase that exists in the ER, participates in protein folding and secretion and inhibiting apoptosis, and regulates tumor progression, which is a novel factor of poor cancer prognosis. However, the other physiological functions of ERO1α remain undiscovered. Although our preliminary results of this study indicated that ERO1α revealed the robust expression in ovary, especially in granulosa cells, the role of ERO1α in follicular development is not well known. Therefore, the aims of the present study were to explore the role of ERO1α and the possible mechanisms in regulating cell apoptosis and steroidogenesis in ovarian granulosa cells. ERO1α was mainly localized in granulosa cells and oocytes in the adult ovary by immunohistochemistry. Western blot analysis showed that the expression of ERO1α was highest at oestrous stage during the estrous cycle. The effect of ERO1α on cell apoptosis and steroidogenesis was detected by transduction of ERO1α overexpression and knockdown lentiviruses into primary cultured granulosa cells. Flow cytometry analysis showed that ERO1α decreased granulosa cells apoptosis. Western bolt and RT-qPCR analysis found that ERO1α increased the ratio of BCL-2/BAX, and decreased BAD and Caspase-3 expression. ELISA analysis showed that ERO1α enhanced estrogen (E2) secretion. Western bolt and RT-qPCR analysis found that ERO1α increased StAR, CYP11A1, 3β-HSD, CYP17A1, and CYP19A1 expression, and decreased CYP1B1 expression. Furthermore, Western bolt analysis found that ERO1αincreased PDI and PRDX 4 expression, and activated the PI3K/AKT/mTOR signaling pathway through increasing the phosphorylation of AKT and P70 S6 kinase. In summary, these results suggested that ERO1α might play an anti-apoptotic role and regulate steroidogenesis in granulosa cells, at least partly, via activation of the PI3K/AKT/mTOR signaling pathway.
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Affiliation(s)
- Jiahui Hu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, Jiangsu, China
| | - Jiaqi Jin
- College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, Jiangsu, China
| | - Yuxing Qu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Wanyang Liu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Zhiyu Ma
- College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, Jiangsu, China
| | - Jinlong Zhang
- College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, Jiangsu, China
| | - Fenglei Chen
- College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, Jiangsu, China.
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Zhang HC, Shi CY, Yang YJ, Chen GW, Liu DZ. Biomarkers of Planarian Dugesia japonica in Response to Herbicide Glyphosate Exposure. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2020; 104:804-808. [PMID: 32372209 DOI: 10.1007/s00128-020-02865-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 04/29/2020] [Indexed: 06/11/2023]
Abstract
As the worldwide top-selling herbicide, glyphosate is ubiquitously distributed in the natural environment, and its influence on the ecological safety and human health has being increasingly concerned. In this study, mRNA expressions of GPX and three heat shock protein genes in freshwater planarian Dugesia japonica in response to glyphosate were determined, and two oxidative stress parameters were measured. The results suggested that GPX activity can be used as a more sensitive biomarker in contrast with GPX gene expression, and mRNA expressions of Hsp70, Hsp90 genes are more sensitive than Hsp40 for planarians in response to glyphosate stress. Besides, the deduced T-AOC as well as varied GPX activity and mRNA expression levels of Hsps also indicated that glyphosate exposure would inhibit antioxidation and induce oxidative stress in D. japonica, while specific antioxidant systems and stress proteins tried to protect cells by their own regulation. The results of this study will be helpful to elucidate the stress response mechanisms of freshwater planarians to herbicide glyphosate.
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Affiliation(s)
- He-Cai Zhang
- College of Life Sciences, Henan Normal University, No. 46, Jianshe East Road, Xinxiang, 453007, China
| | - Chang-Ying Shi
- College of Life Sciences, Henan Normal University, No. 46, Jianshe East Road, Xinxiang, 453007, China
| | - Yu-Juan Yang
- College of Life Sciences, Henan Normal University, No. 46, Jianshe East Road, Xinxiang, 453007, China
| | - Guang-Wen Chen
- College of Life Sciences, Henan Normal University, No. 46, Jianshe East Road, Xinxiang, 453007, China.
| | - De-Zeng Liu
- College of Life Sciences, Henan Normal University, No. 46, Jianshe East Road, Xinxiang, 453007, China
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Wang J, Liu Y, Yang Y, Bao C, Cao Y. High-level expression of an acidic thermostable xylanase in Pichia pastoris and its application in weaned piglets. J Anim Sci 2020; 98:5645401. [PMID: 31778535 DOI: 10.1093/jas/skz364] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 11/27/2019] [Indexed: 02/06/2023] Open
Abstract
An acidic thermostable xylanase (AT-xynA) which was stable at low pH and high temperature was considered to have great potential in animal feed. For large-scale production, AT-xynA activity was enhanced about 1-fold in Pichia pastoris by constructing a double-copy expression strain in this study. Furthermore, impacts of different AT-xynA levels on growth performance, nutrient digestibility, short-chain fatty acids, and bacterial community in weaned piglets were determined. Compared with the control group, ADFI and ADG were higher for the pigs fed 4,000 or 6,000 U/kg AT-xynA (P < 0.05). AT-xynA supplementation also significantly increased the digestibility of OM, GE, and DM (P < 0.05). AT-xynA supplementation increased the concentrations of acetate in ileal (P < 0.01) and cecal digesta (P < 0.05). Isobutyrate (P < 0.05) and valerate (P < 0.05) concentrations in colonic digesta also significantly increased compared with the control group. AT-xynA supplementation increased the abundance of Lactobacillus in the ileal, cecal, and colonic digesta of weaned piglets (P < 0.05). AT-xynA alleviated anti-nutritional effects of nonstarch polysaccharides (NSP) by preventing the growth of Pateurella and Leptotrichia in the ileum (P < 0.05). AT-xynA increased the abundance of NSP-degrading bacteria, such as Ruminococcaceae, Prevotella in the cecum and colon (P < 0.05). In summary, AT-xynA addition could improve the growth performance of weaned piglets by altering gut microbiota.
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Affiliation(s)
- Jian Wang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, People's Republic of China
| | - Yajing Liu
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, People's Republic of China
| | - Yongzhi Yang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, People's Republic of China
| | - Chengling Bao
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, People's Republic of China
| | - Yunhe Cao
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, People's Republic of China
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Dong M, Gong Y, Guo J, Ma J, Li S, Li T. Optimization of production conditions of rice α-galactosidase II displayed on yeast cell surface. Protein Expr Purif 2020; 171:105611. [PMID: 32092408 DOI: 10.1016/j.pep.2020.105611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 02/02/2020] [Accepted: 02/20/2020] [Indexed: 02/07/2023]
Abstract
The yeast surface displayed rice α-galactosidase II (YSD rice α-Gal II) was generated with the pYD1 vector. The expression and cultural conditions for the improvement of production of YSD rice α-Gal II were optimized. The results showed that several induction factors, which were the initial cell density, inoculation ratio, galactose (inducer) concentration, induction time and temperature, determined the activity and expression efficiency of YSD rice α-Gal II. Meanwhile, the medium composition also affected its activity and production. Moreover, the production of YSD rice α-Gal II was further improved by continuous feeding of galactose in the fermenter level. The highest production was obtained at an initial cell density of OD600 = 2.9, 2% inoculation ratio, and 2% galactose, with 0.6 g/L compound nitrogen source ((NH4)2SO4/urea = 2/1, w/w) and 5 g/L sucrose, followed by continuous feeding of galactose (20 g/L with flow rate of 1.5 mL/h). At such conditions, the enzyme activity and productivity reached to 676.2 U/g (DCW) and 1548.5 U/L, respectively, 26.4- and 63.7-fold to that before optimization. The results provided a basic and effective strategy for the industrial production of YSD rice α-Gal II.
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Affiliation(s)
- Mosi Dong
- College of Food Science, Shenyang Agricultural University, Shenyang, 110866, China
| | - Yun Gong
- College of Food Science, Shenyang Agricultural University, Shenyang, 110866, China
| | - Jia Guo
- College of Food Science, Shenyang Agricultural University, Shenyang, 110866, China
| | - Jing Ma
- Xingcheng Village Rehabilitation Service Centre, Xingcheng, 125100, China
| | - Suhong Li
- College of Food Science, Shenyang Agricultural University, Shenyang, 110866, China.
| | - Tuoping Li
- College of Food Science, Shenyang Agricultural University, Shenyang, 110866, China.
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Huang J, Wang Q, Bu W, Chen L, Yang Z, Zheng W, Li Y, Li J. Different construction strategies affected on the physiology of Pichia pastoris strains highly expressed lipase by transcriptional analysis of key genes. Bioengineered 2019; 10:150-161. [PMID: 31079540 PMCID: PMC6527059 DOI: 10.1080/21655979.2019.1614422] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
We demonstrated previously that expression of Rhizomucor miehei lipase (RML) in Pichia pastoris could be significantly increased by addition of gene propeptide, optimized signal peptide codons and manipulation of gene dosage. In this study, effects of various strategies on the protein synthesis and secretion pathways were analyzed. Using nine strains previously constructed, we evaluated cell culture properties, enzymatic activities, and analyzed transcriptional levels of nine genes involved in protein synthesis and secretion pathways by qPCR. We observed that (i) Addition of propeptide decreased lipase folding stress by down-regulated four UPR-related genes. (ii) Signal peptide codons optimization had no effect on host with no change in the nine detected genes. (iii) Folding stress and limited transport capacity produced when rml gene dosage exceed 2. Different limiting factors on lipase expression in strains with different construction strategies were identified. This study provides a theoretical basis for further improving RML by transforming host.
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Affiliation(s)
- Jinjin Huang
- a Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Sciences , Jiangsu Normal University , Xuzhou , P. R. China.,b State Key Laboratory of Agrobiotechnology and MOA Key Laboratory of Soil Microbiology , College of Biological Sciences, China Agricultural University , Beijing , P. R. China
| | - Qing Wang
- b State Key Laboratory of Agrobiotechnology and MOA Key Laboratory of Soil Microbiology , College of Biological Sciences, China Agricultural University , Beijing , P. R. China.,c School of Life Sciences , Beijing University of Chinese Medicine , Beijing , P. R. China
| | - Wei Bu
- a Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Sciences , Jiangsu Normal University , Xuzhou , P. R. China
| | - Lingxiao Chen
- a Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Sciences , Jiangsu Normal University , Xuzhou , P. R. China
| | - Zhen Yang
- b State Key Laboratory of Agrobiotechnology and MOA Key Laboratory of Soil Microbiology , College of Biological Sciences, China Agricultural University , Beijing , P. R. China
| | - Weifa Zheng
- a Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Sciences , Jiangsu Normal University , Xuzhou , P. R. China
| | - Ying Li
- b State Key Laboratory of Agrobiotechnology and MOA Key Laboratory of Soil Microbiology , College of Biological Sciences, China Agricultural University , Beijing , P. R. China
| | - Jilun Li
- b State Key Laboratory of Agrobiotechnology and MOA Key Laboratory of Soil Microbiology , College of Biological Sciences, China Agricultural University , Beijing , P. R. China
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