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Song Y, Wang Y, Yan S, Nakamura K, Kikukawa T, Ayabe T, Aizawa T. Efficient recombinant production of mouse-derived cryptdin family peptides by a novel facilitation strategy for inclusion body formation. Microb Cell Fact 2023; 22:9. [PMID: 36635697 PMCID: PMC9838031 DOI: 10.1186/s12934-023-02016-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 01/01/2023] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND A number of antimicrobial peptides (AMPs) hold promise as new drugs owing to their potent bactericidal activity and because they are often refractory to the development of drug resistance. Cryptdins (Crps) are a family of antimicrobial peptides found in the small intestine of mice, comprising six isoforms containing three sets of disulfide bonds. Although Crp4 is actively being investigated, there have been few studies to date on the other Crp isoforms. A prerequisite for detailed characterization of the other Crp isoforms is establishment of efficient sample preparation methods. RESULTS To avoid degradation during recombinant expression of Crps in E. coli, co-expression of Crps with the aggregation-prone protein human α-lactalbumin (HLA) was used to promote the formation of stable inclusion bodies. Using this method, the production of Crp4 and Crp6 by the BL21 strain was effective, but the expression of other Crp isoforms was not as efficient. The results of a cell-free system study suggested that Crps were degraded, even though a substantial amounts of Crps were synthesized. Therefore, using the Origami™ B strain, we were able to significantly increase the expression efficiency of Crps by promoting the formation of erroneous intermolecular disulfide bonds between HLA and Crps, thereby promoting protein aggregation and inclusion body formation, which prevented degradation. The various Crp isoforms were successfully refolded in vitro and purified using reversed-phase HPLC. In addition, the yield was further improved by deformylation of formyl-Crps. We measured the antibacterial activity of Crps against both Gram-positive and Gram-negative bacteria. Each Crp isoform exhibited a completely different trend in antimicrobial activity, although conformational analysis by circular dichroism did not reveal any significant steric differences. CONCLUSION In this study, we established a novel and efficient method for the production of the cryptdin family of cysteine-containing antimicrobial peptides. Additionally, we found that there were notable differences in the antibacterial activities of the various Crp family members. The expression system established in this study is expected to provide new insights regarding the mechanisms underlying the different antibacterial activities of the Crp family of peptides.
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Affiliation(s)
- Yuchi Song
- grid.39158.360000 0001 2173 7691Laboratory of Protein Science, Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido Japan
| | - Yi Wang
- grid.39158.360000 0001 2173 7691Laboratory of Protein Science, Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido Japan
| | - Shaonan Yan
- grid.39158.360000 0001 2173 7691Laboratory of Protein Science, Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido Japan
| | - Kiminori Nakamura
- grid.39158.360000 0001 2173 7691Innate Immunity Laboratory, Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido Japan
| | - Takashi Kikukawa
- grid.39158.360000 0001 2173 7691Laboratory of Biological Information Analysis Science, Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido Japan
| | - Tokiyoshi Ayabe
- grid.39158.360000 0001 2173 7691Innate Immunity Laboratory, Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido Japan
| | - Tomoyasu Aizawa
- grid.39158.360000 0001 2173 7691Laboratory of Protein Science, Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido Japan
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Oustadi F, Imani R, Haghbin Nazarpak M, Sharifi AM, McInnes SJP. Nanofiber/hydrogel composite scaffold incorporated by silicon nanoparticles for sustained delivery of osteogenic factor: in vitro study. INT J POLYM MATER PO 2022. [DOI: 10.1080/00914037.2022.2147176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Fereshteh Oustadi
- Department of Biomedical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Rana Imani
- Department of Biomedical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Masoumeh Haghbin Nazarpak
- New Technologies Research Center, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Ali Mohammad Sharifi
- Stem Cell and Regenerative Medicine Research Center, and Department of Pharmacology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
- Department of Orthopedics Surgery, Faculty of Medicine, Tissue Engineering Group (NOCERAL), University of Malaya, Kuala Lumpur, Malaysia
| | - Steven J. P. McInnes
- UniSA STEM, Mawson Lakes Campus, University of South Australia, Mawson Lakes, South Australia, Australia
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Mirbaha S, Rezaei M, Emamzadeh R, Zarkesh Esfahani SH. Design and production of a novel chimeric human growth hormone superagonist fused to human Fc domain. Res Pharm Sci 2022; 17:284-293. [PMID: 35531129 PMCID: PMC9075020 DOI: 10.4103/1735-5362.343082] [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: 10/27/2021] [Revised: 01/06/2022] [Accepted: 01/31/2022] [Indexed: 11/04/2022] Open
Abstract
Background and purpose Growth hormone (GH) has been known as a crucial metabolic hormone expressed at the pituitary and the other number of cells and tissues and responsible for body growth. Because of the short half-life of GH, daily subcutaneous injections were shown to be more effective for GH therapy. This represents a burden for patients. So, there is a strong effort from the industry to create a long-acting form of GH and lots of technologies like GH fusion proteins are used to increase GH half-life. Experimental approach In this study, the Fc domain of human IgG1 with serine-glycine linkers was attached to the C-terminal of a GH superagonist via molecular cloning. The presence of recombinant vector in E. coli host was confirmed by PCR. SDS-PAGE and western blot analysis showed the expression of recombinant proteins in the bacterial lysate. The binding ability to growth hormone receptors is determined by ELISA. Findings / Results Our results showed that the novel SupGH-Fc has a good binding affinity to its receptor in ELISA in comparison to standard GH, although it has a big size. Conclusion and implications Our data in this study clearly demonstrated the expression of the SupGH-Fc in a recombinant protein expression system. It is an introduction to the production of the new recombinant GH, which can bind to its receptor more effectively than commercial growth hormones and also might have a longer half-life.
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Affiliation(s)
- Samira Mirbaha
- Department of Cell and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, I.R. Iran
| | - Marzieh Rezaei
- Department of Immunology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| | - Rahman Emamzadeh
- Department of Cell and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, I.R. Iran
| | - Sayyed Hamid Zarkesh Esfahani
- Department of Cell and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, I.R. Iran
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4
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Different strategies for expression and purification of the CT26-poly-neoepitopes vaccine in Escherichia coli. Mol Biol Rep 2022; 49:859-873. [DOI: 10.1007/s11033-021-06727-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 09/28/2021] [Indexed: 11/26/2022]
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Roufarshbaf M, Esmaeil N, Akbari V. Comparison of four methods of colon cancer cell lysates preparation for ex vivo maturation of dendritic cells. Res Pharm Sci 2021; 17:43-52. [PMID: 34909043 PMCID: PMC8621848 DOI: 10.4103/1735-5362.329925] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 05/16/2021] [Accepted: 10/13/2021] [Indexed: 12/20/2022] Open
Abstract
Background and purpose: One of the most effective methods for the development of dendritic cell (DC)-based cancer immunotherapy is ex vivo pulsing of DCs with tumor cell lysates (TCLs). However, antitumor immune responses of DCs are significantly influenced by how TCLs were prepared. Here, we compared four strategies of TCL preparation derived from colon cancer cells, HT-29, for ex vivo maturation of DCs. Experimental approach: Peripheral blood monocytes were isolated from healthy volunteers and incubated with granulocyte macrophage colony-stimulating factor and interleukin (IL)-4 to differentiate into DCs in 10 days. Morphological properties, phenotype characteristics (i.e. CD83 and CD86), and cytokine production (i.e. IL-10 and interferon gamma) of DCs loaded with four different TCLs (i.e. freeze-thaw, hypochlorous acid (HOCl), hyperthermia, and UV irradiation) were evaluated. Findings/Results: HOCl preparations led to the generation of DCs with higher surface expression of maturation biomarkers (particularly CD83), while UV preparations resulted in DCs with lower levels of surface biomarkers compared to freeze-thawed preparations. The supernatant of DCs pulsed with HOCl preparation showed significantly higher levels of interferon gamma and lower levels of IL-10 compared with the other groups. Conclusion and implications: Our results suggest that pulsing DCs with HOCl preparation may be superior to other TCLs preparation strategies, possibly due to induction of rapid necrotic cell death.
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Affiliation(s)
- Mohammad Roufarshbaf
- Student Research Committee, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| | - Nafiseh Esmaeil
- Department of Immunology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| | - Vajihe Akbari
- Department of Pharmaceutical Biotechnology and Isfahan Pharmaceutical Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
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Jiang T, Yang T, Bao Q, Sun W, Yang M, Mao C. Construction of tissue-customized hydrogels from cross-linkable materials for effective tissue regeneration. J Mater Chem B 2021; 10:4741-4758. [PMID: 34812829 DOI: 10.1039/d1tb01935j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Hydrogels are prevalent scaffolds for tissue regeneration because of their hierarchical architectures along with outstanding biocompatibility and unique rheological and mechanical properties. For decades, researchers have found that many materials (natural, synthetic, or hybrid) can form hydrogels using different cross-linking strategies. Traditional strategies for fabricating hydrogels include physical, chemical, and enzymatical cross-linking methods. However, due to the diverse characteristics of different tissues/organs to be regenerated, tissue-customized hydrogels need to be developed through precisely controlled processes, making the manufacture of hydrogels reliant on novel cross-linking strategies. Thus, hybrid cross-linkable materials are proposed to tackle this challenge through hybrid cross-linking strategies. Here, different cross-linkable materials and their associated cross-linking strategies are summarized. From the perspective of the major characteristics of the target tissues/organs, we critically analyze how different cross-linking strategies are tailored to fit the regeneration of such tissues and organs. To further advance this field, more appropriate cross-linkable materials and cross-linking strategies should be investigated. In addition, some innovative technologies, such as 3D bioprinting, the internet of medical things (IoMT), and artificial intelligence (AI), are also proposed to improve the development of hydrogels for more efficient tissue regeneration.
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Affiliation(s)
- Tongmeng Jiang
- School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, P. R. China
| | - Tao Yang
- School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, P. R. China
| | - Qing Bao
- School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, P. R. China
| | - Weilian Sun
- Department of Periodontology, The Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310009, P. R. China.
| | - Mingying Yang
- Institute of Applied Bioresource Research, College of Animal Science, Zhejiang University, Yuhangtang Road 866, Hangzhou, Zhejiang 310058, P. R. China.
| | - Chuanbin Mao
- Department of Chemistry and Biochemistry, University of Oklahoma, Norman, OK 73019, USA.
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Cisneros K, Chowdhury N, Coleman E, Ferdous T, Su H, Jennings JA, Bumgardner JD, Fujiwara T. Long-Term Controlled Release of Simvastatin from Photoprinted Triple-Networked Hydrogels Composed of Modified Chitosan and PLA-PEG Micelles. Macromol Biosci 2021; 21:e2100123. [PMID: 34128589 DOI: 10.1002/mabi.202100123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 05/11/2021] [Indexed: 11/11/2022]
Abstract
Local delivery of active agents using injectable or implantable hydrogels for tissue and bone regeneration is a promising therapy, but it remains challenging for controlling dose and duration of release. Simvastatin (SMV), a hydrophobic drug, has shown potential for osteogenic stimulation. Secure loading of hydrophobic drugs by physical interactions is particularly difficult to establish in hydrophilic polymer matrices, and their sustained release over several months for long-term regeneration has rarely been reported. Additionally, mechanical properties of hydrogels must be improved for a sufficient support while maintaining eventual biodegradability. This study assesses the effect of controlled SMV release from 3D-printed triple-network hydrogels for osteogenic stimulation and characterizes their mechanical and biological properties as an implant. SMV is loaded into polymeric micelles of polylactide/poly(ethylene glycol) triblock copolymers (PLA-PEG-PLA) and mixed with N-methacryloyl chitosan and PEG dimethacrylate to fabricate hydrogels by photo-cross-linked 3D printing. The hydrogel properties and drug release profiles have shown significant dependance on the polymer compositions. The SMV release from the triple-polymer-network hydrogel has continued for 17 weeks of observation. Cytocompatibility of hydrogels with various formulations is confirmed. The tunable triple-network hydrogels loaded with SMV provide a potential therapeutic value for bone regeneration.
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Affiliation(s)
- Karla Cisneros
- Department of Chemistry, University of Memphis, Memphis, TN, 38152, USA
| | - Naisha Chowdhury
- Department of Chemistry, University of Memphis, Memphis, TN, 38152, USA
| | - Emily Coleman
- Department of Biomedical Engineering, University of Memphis, Memphis, TN, 38152, USA
| | - Tamanna Ferdous
- Department of Chemistry, University of Memphis, Memphis, TN, 38152, USA
| | - Hengjie Su
- Department of Biomedical Engineering, University of Memphis, Memphis, TN, 38152, USA
| | - Jessica A Jennings
- Department of Biomedical Engineering, University of Memphis, Memphis, TN, 38152, USA
| | - Joel D Bumgardner
- Department of Biomedical Engineering, University of Memphis, Memphis, TN, 38152, USA
| | - Tomoko Fujiwara
- Department of Chemistry, University of Memphis, Memphis, TN, 38152, USA
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Nguyen TKO, Vu TL, Nguyen MQ, Ta HKK, Park KS, Kim SH, Kim CJ, Jang YJ, Choe H. Soluble Prokaryotic Overexpression and Purification of Human GM-CSF Using the Protein Disulfide Isomerase b'a' Domain. Int J Mol Sci 2021; 22:ijms22105267. [PMID: 34067755 PMCID: PMC8156066 DOI: 10.3390/ijms22105267] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 05/06/2021] [Accepted: 05/15/2021] [Indexed: 12/30/2022] Open
Abstract
Granulocyte-macrophage colony-stimulating factor (GM-CSF) is a member of the colony-stimulating factor (CSF) family, which functions to enhance the proliferation and differentiation of hematopoietic stem cells and other hematopoietic lineages such as neutrophils, dendritic cells, or macrophages. These proteins have thus generated considerable interest in clinical therapy research. A current obstacle to the prokaryotic production of human GM-CSF (hGM-CSF) is its low solubility when overexpressed and subsequent complex refolding processes. In our present study, the solubility of hGM-CSF was examined when combined with three N-terminal fusion tags in five E. coli strains at three different expression temperatures. In the five E. coli strains BL21 (DE3), ClearColi BL21 (DE3), LOBSTR, SHuffle T7 and Origami2 (DE3), the hexahistidine-tagged hGM-CSF showed the best expression but was insoluble in all cases at each examined temperature. Tagging with the maltose-binding protein (MBP) and the b'a' domain of protein disulfide isomerase (PDIb'a') greatly improved the soluble overexpression of hGM-CSF at 30 °C and 18 °C. The solubility was not improved using the Origami2 (DE3) and SHuffle T7 strains that have been engineered for disulfide bond formation. Two conventional chromatographic steps were used to purify hGM-CSF from the overexpressed PDIb'a'-hGM-CSF produced in ClearColi BL21 (DE3). In the experiment, 0.65 mg of hGM-CSF was isolated from a 0.5 L flask culture of these E. coli and showed a 98% purity by SDS-PAGE analysis and silver staining. The bioactivity of this purified hGM-CSF was measured at an EC50 of 16.4 ± 2 pM by a CCK8 assay in TF-1 human erythroleukemia cells.
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Affiliation(s)
- Thi Kieu Oanh Nguyen
- Department of Physiology, Bio-Medical Institute of Technology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea; (T.K.O.N.); (T.L.V.); (M.Q.N.); (H.K.K.T.); (Y.J.J.)
| | - Thi Luong Vu
- Department of Physiology, Bio-Medical Institute of Technology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea; (T.K.O.N.); (T.L.V.); (M.Q.N.); (H.K.K.T.); (Y.J.J.)
| | - Minh Quan Nguyen
- Department of Physiology, Bio-Medical Institute of Technology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea; (T.K.O.N.); (T.L.V.); (M.Q.N.); (H.K.K.T.); (Y.J.J.)
| | - Huynh Kim Khanh Ta
- Department of Physiology, Bio-Medical Institute of Technology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea; (T.K.O.N.); (T.L.V.); (M.Q.N.); (H.K.K.T.); (Y.J.J.)
| | - Kyoung Sun Park
- Wide River Institute of Immunology, Seoul National University College of Medicine, Seoul 25159, Korea; (K.S.P.); (S.H.K.)
| | - Soo Hyeon Kim
- Wide River Institute of Immunology, Seoul National University College of Medicine, Seoul 25159, Korea; (K.S.P.); (S.H.K.)
| | - Chong Jai Kim
- Department of Pathology, Asan-Minnesota Institute for Innovating Transplantation, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea;
| | - Yeon Jin Jang
- Department of Physiology, Bio-Medical Institute of Technology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea; (T.K.O.N.); (T.L.V.); (M.Q.N.); (H.K.K.T.); (Y.J.J.)
| | - Han Choe
- Department of Physiology, Bio-Medical Institute of Technology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea; (T.K.O.N.); (T.L.V.); (M.Q.N.); (H.K.K.T.); (Y.J.J.)
- Correspondence: ; Tel.: +82-2-3010-4292
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Behravan A, Hashemi A. Statistical optimization of culture conditions for expression of recombinant humanized anti-EpCAM single-chain antibody using response surface methodology. Res Pharm Sci 2021; 16:153-164. [PMID: 34084202 PMCID: PMC8102927 DOI: 10.4103/1735-5362.310522] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 10/14/2020] [Accepted: 02/27/2021] [Indexed: 12/21/2022] Open
Abstract
Background and purpose: The epithelial cell adhesion molecule (EpCAM), is one of the first cancer- associated markers discovered. Its overexpression in cancer stem cells, epithelial tumors, and circulating tumor cells makes this molecule interesting for targeted cancer therapy. So, in recent years scFv fragments have been developed for EpCAM targeting. Experimental approach: In this study, an scFv against EpCAM extracellular domain (EpEX) derived from 4D5MOC-B humanized mAb was expressed in Escherichia coli k12 strain, and in order to obtain the optimum culture conditions in chemically defined minimal medium, response surface methodology (RSM) was employed. According to the RSM-CCD method, a total of 30 experiments were designed to investigate the effects of various parameters including isopropyl-b-D-thiogalactopyranoside (IPTG) concentration, cell density before induction, post-induction time, and post-induction temperature on anti EpEX-scFv expression level. Findings/Results: At the optimum conditions (induction at cell density 0.8 with 0.8 mM IPTG for 24 h at 37 °C), the recombinant anti EpEX-scFv was produced at a titer of 197.33 μg/mL that was significantly consistent with the prediction of the model. Conclusion and implication: The optimized-culture conditions obtained here for efficient production of anti EpEX-scFv in shake flask cultivation on a chemically defined minimal medium could be applied to large- scale fermentation for the anti EpEX-scFv production.
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Affiliation(s)
- Aidin Behravan
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehan, I.R. Iran
| | - Atieh Hashemi
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehan, I.R. Iran
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Javadian FS, Basafa M, Behravan A, Hashemi A. Solubility assessment of single-chain antibody fragment against epithelial cell adhesion molecule extracellular domain in four Escherichia coli strains. J Genet Eng Biotechnol 2021; 19:26. [PMID: 33543415 PMCID: PMC7862456 DOI: 10.1186/s43141-021-00126-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 01/25/2021] [Indexed: 12/23/2022]
Abstract
BACKGROUND Overexpression of the EpCAM (epithelial cell adhesion molecule) in malignancies makes it an attractive target for passive immunotherapy in a wide range of carcinomas. In comparison with full-length antibodies, due to the small size, the scFvs (single-chain variable fragments) are more suitable for recombinant expression in E. coli (Escherichia coli). However, the proteins expressed in large amounts in E. coli tend to form inclusion bodies that need to be refolded which may result in poor recovery of bioactive proteins. Various engineered strains were shown to be able to alleviate the insolubility problem. Here, we studied the impact of four E. coli strains on the soluble level of anti-EpEX-scFv (anti-EpCAM extracellular domain-scFv) protein. RESULTS Although results showed that the amount of soluble anti-EpEX-scFv obtained in BL21TM (DE3) (114.22 ± 3.47 mg/L) was significantly higher to those produced in the same condition in E. coli RosettaTM (DE3) (71.39 ± 0.31 mg/L), and OrigamiTM T7 (58.99 ± 0.44 mg/L) strains, it was not significantly different from that produced by E. coli SHuffleTM T7 (108.87 ± 2.71 mg/L). Furthermore, the highest volumetric productivity of protein reached 318.29 ± 26.38 mg/L in BL21TM (DE3). CONCLUSIONS Although BL21TM (DE3) can be a suitable strain for high-level production of anti-EpEX-scFv protein, due to higher solubility yield (about 55%), E. coli SHuffleTM T7 seems to be better candidate for soluble production of scfv compared to BL21TM (DE3) (solubility yield of about 30%).
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Affiliation(s)
- Fatemeh Sadat Javadian
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, ValiAsr Avenue, Niayesh Junction, PO Box 14155-6153, Tehran, Iran
| | - Majid Basafa
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, ValiAsr Avenue, Niayesh Junction, PO Box 14155-6153, Tehran, Iran
| | - Aidin Behravan
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, ValiAsr Avenue, Niayesh Junction, PO Box 14155-6153, Tehran, Iran
| | - Atieh Hashemi
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, ValiAsr Avenue, Niayesh Junction, PO Box 14155-6153, Tehran, Iran.
- Protein Technology Research Center, Shahid Beheshti University of Medical Sciences, ValiAsr Avenue, Niayesh Junction, PO Box 14155-6153, Tehran, Iran.
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