1
|
SUMO-fusion and autoinduction-based combinatorial approach for enhanced production of bioactive human interleukin-24 in Escherichia coli. Appl Microbiol Biotechnol 2020; 104:9671-9682. [PMID: 33005978 DOI: 10.1007/s00253-020-10921-4] [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: 04/25/2020] [Revised: 09/15/2020] [Accepted: 09/21/2020] [Indexed: 10/23/2022]
Abstract
High-level production of recombinant human interleukin-24 (IL-24), a multifunctional immunomodulatory cytokine, has been challenging due primarily to its aggregation as inclusion bodies in the bacterial host while persistent poor-expression in the insect/mammalian expression systems. The present study presents a robust, vector-host combination (pE-SUMO-IL24), auto-inducible medium (YNG/M9NG), and a simple purification scheme for soluble, bioactive, and cost-effective production of native-like IL-24 (nIL-24) in Escherichia coli. The final protein yield, following a three-step purification scheme (IMAC, SEC, dialysis), was 98 mg/L in shake-flask culture (with scale-up potential), which was several folds higher than reported earlier. In vitro cytotoxicity assays with HeLa and HCT116 cancer cell lines (performed using different concentrations of nIL-24) and the fluorescence activated cell sorting analysis (FACS) revealed a dose- and concentration-dependent increase in the population of pro-apoptotic cells with concomitant, statistically significant drop in the number of cells existent at Go/G1-, S-, and G2/M-phases (P < 0.002). The bioactive nIL-24, developed through this study, holds promise for use in further functional characterizations/applications. KEY POINTS: • Yeast SUMO fusion partner at N-terminus for improved solubility of an otherwise insoluble IL-24 in E. coli. • Enhanced cell densities with concomitant several-fold increase in protein yield by lactose-inducible media. • Improved inhibition of cervical and colorectal carcinomas by native-like nIL-24 compared with Met-containing IL. • Heterologous nIL-24 may enable better understanding of the functional intricacies linked up with its unique cancer-specific features. Graphical abstract.
Collapse
|
2
|
Zahradník J, Kolářová L, Peleg Y, Kolenko P, Svidenská S, Charnavets T, Unger T, Sussman JL, Schneider B. Flexible regions govern promiscuous binding ofIL‐24 to receptorsIL‐20R1 andIL‐22R1. FEBS J 2019; 286:3858-3873. [DOI: 10.1111/febs.14945] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 05/05/2019] [Accepted: 05/30/2019] [Indexed: 11/30/2022]
Affiliation(s)
- Jiří Zahradník
- Institute of Biotechnology of the Czech Academy of Sciences BIOCEV Vestec Czech Republic
- Weizmann Institute of Science Rehovot Israel
| | - Lucie Kolářová
- Institute of Biotechnology of the Czech Academy of Sciences BIOCEV Vestec Czech Republic
| | - Yoav Peleg
- Weizmann Institute of Science Rehovot Israel
| | - Petr Kolenko
- Institute of Biotechnology of the Czech Academy of Sciences BIOCEV Vestec Czech Republic
- Faculty of Nuclear Sciences and Physical Engineering Czech Technical University in Prague Prague Czech Republic
| | - Silvie Svidenská
- Institute of Biotechnology of the Czech Academy of Sciences BIOCEV Vestec Czech Republic
| | - Tatsiana Charnavets
- Institute of Biotechnology of the Czech Academy of Sciences BIOCEV Vestec Czech Republic
| | - Tamar Unger
- Weizmann Institute of Science Rehovot Israel
| | | | - Bohdan Schneider
- Institute of Biotechnology of the Czech Academy of Sciences BIOCEV Vestec Czech Republic
| |
Collapse
|
3
|
Pourhadi M, Jamalzade F, Jahanian-Najafabadi A, Shafiee F. Expression, purification, and cytotoxic evaluation of IL24-BR2 fusion protein. Res Pharm Sci 2019; 14:320-328. [PMID: 31516508 PMCID: PMC6714114 DOI: 10.4103/1735-5362.263556] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Interleukin (IL) 24 is a pro-inflammatory and tumor suppressor cytokine capable of inducing selective apoptosis in various cancer cells. BR2, on the other hand, is an anti-microbial peptide with selective penetrability to the cancer cells. In this study, we aimed to produce and purify a fusion protein containing IL24 as the toxic moiety fused to BR2, as targeting moiety, and then to evaluate its cytotoxic activities. For this purpose, the coding sequence of IL24-BR2 fusion protein and IL24 were cloned into the pET28a vector and used to transform E. coli BL21 (DE3) cells. Following induction of expression, protein purification performed using Ni-NTA chromatography. SDS-PAGE and western blotting were performed to confirm the expression and purification. Finally, cytotoxic effects of the purified proteins were evaluated on MCF-7 and HUVEC cell lines. Analysis of crude lysate of induced recombinant E. coli BL21 (DE3) bacteria and also purified proteins showed a band of approximately 22 and 18 KDa on SDS-PAGE and western blotting for IL24-BR2 and IL24, respectively. Finally, statistical analysis showed significant cytotoxic effects of IL24-BR2 on MCF-7 cells at 10, 20, and 40 µg/mL concentrations compared to IL24 alone, which showed no significant cytotoxic effects on cancer cells except in the highest concentration. In conclusion, production and purification of IL24-BR2 fusion protein with potential specific toxicity toward cancer cells was successfully achieved. However, further investigation of the cytotoxic effects of this fusion protein on other cell lines and in vivo cancer models must be performed.
Collapse
Affiliation(s)
- Marjan Pourhadi
- Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| | - Fahimeh Jamalzade
- Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| | - Ali Jahanian-Najafabadi
- Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| | - Fatemeh Shafiee
- Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| |
Collapse
|
4
|
Tripathi NK. Production and Purification of Recombinant Proteins fromEscherichia coli. CHEMBIOENG REVIEWS 2016. [DOI: 10.1002/cben.201600002] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
5
|
MA QUNFENG, JIN BANGMING, ZHANG YAO, SHI YINAN, ZHANG CHI, LUO DAN, WANG PENGKUN, DUAN CUIMI, SONG HEYU, LI XUE, DENG XUEFENG, CHEN ZHINAN, WANG ZILING, JIANG HONG, LIU YAN. Secreted recombinant human IL-24 protein inhibits the proliferation of esophageal squamous cell carcinoma Eca-109 cells in vitro and in vivo. Oncol Rep 2016; 35:2681-90. [DOI: 10.3892/or.2016.4633] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 12/16/2015] [Indexed: 11/05/2022] Open
|
6
|
Guo TT, Su J, Ma ZY, Ma JX, Jin MM, Li X, Lei ZH. Cloning of Neuromedin B and its receptor in the rabbit and generating a polyclonal antibody to the Neuromedin B protein. Gene 2015; 564:21-8. [DOI: 10.1016/j.gene.2015.03.038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Revised: 03/10/2015] [Accepted: 03/16/2015] [Indexed: 01/23/2023]
|
7
|
Soluble expression, rapid purification, and characterization of human interleukin-24 (IL-24) using a MBP-SUMO dual fusion system in Escherichia coli. Appl Microbiol Biotechnol 2015; 99:6705-13. [DOI: 10.1007/s00253-015-6441-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 01/23/2015] [Accepted: 01/26/2015] [Indexed: 11/25/2022]
|
8
|
Wang X, Bai C, Zhang J, Sun A, Wang X, Wei D. Improving the mda-7/IL-24 refolding and purification process using optimized culture conditions based on the structure characteristics of inclusion bodies. BIORESOUR BIOPROCESS 2014. [DOI: 10.1186/s40643-014-0021-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
9
|
Bai C, Wang X, Zhang J, Sun A, Wei D, Yang S. Optimisation of the mRNA secondary structure to improve the expression of interleukin-24 (IL-24) in Escherichia coli. Biotechnol Lett 2014; 36:1711-6. [PMID: 24752814 DOI: 10.1007/s10529-014-1535-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Accepted: 04/10/2014] [Indexed: 02/04/2023]
Abstract
Interleukin-24 (IL-24) is a novel cytokine selectively inhibiting proliferation of cancer cells but with little effect on normal cells. However, IL-24 is difficult to express in Escherichia coli. In this study, we optimised the secondary structure of the translation initiation region using computational approach to obtain non-fusion recombinant IL-24 (nrIL-24). The Gibbs free energy of the region was decreased from -22 to -9.07 kcal mol(-1), potentially promoting a loose secondary structure formation and improving the translation initiation efficiency. As a result, the expression of nrIL-24 was increased to 26 % of the total cellular protein from being barely initially detectable. nrIL-24 showed a concentration-dependent inhibition of A375 cells but had little effect on normal human cells. These results demonstrate that this method in increasing nrIL-24 expression is effective and efficient.
Collapse
Affiliation(s)
- Chaogang Bai
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, People's Republic of China
| | | | | | | | | | | |
Collapse
|
10
|
Amirzada MI, Yu M, Gong X, Chen Y, Zhu R, Lei J, Jin J. Cost-effective production of recombinant human interleukin 24 by lactose induction and a two-step denaturing and one-step refolding method. ACTA ACUST UNITED AC 2014; 41:135-42. [DOI: 10.1007/s10295-013-1367-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Accepted: 10/08/2013] [Indexed: 01/20/2023]
Abstract
Abstract
Recombinant human interleukin 24 (rhIL24) is a member of the interleukin 10 (IL10) family of cytokines with novel therapeutic properties. Human IL24 possesses three N glycosylation sites and a disulfide bridge. The cost and composition of culture media is critical for commercial-scale production of recombinant proteins in E. coli. Addition of yeast extract and glucose to medium enhances rhIL24 production, and the use of lactose instead of IPTG for induction drops the cost and decreases toxicity. In addition, a two-step denaturing and one-step refolding (2DR) strategy improves rhIL24 production. The 2DR strategy replaces a more conventional approach for protein solubilization and refolding. LC–MS/MS provides definitive identification and quantitative information on rhIL24. Single-step purified rhIL24 displayed biological activity on HepG2 hepatocellular carcinoma cells, but no effect on L02 cells. Proliferation analysis suggests that rhIL24 may have potential use as a medication. In the present study, we developed a simple process for producing quality product with high purity. The expression and purification of rhIL24 described here may be a step towards inexpensive large-scale production.
Collapse
Affiliation(s)
- Muhammad Imran Amirzada
- grid.258151.a 0000000107081323 Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology Jiangnan University 214122 Wuxi Jiangsu People’s Republic of China
| | - Minglei Yu
- grid.258151.a 0000000107081323 School of Pharmaceutical Sciences Jiangnan University 214122 Wuxi Jiangsu People’s Republic of China
| | - Xiaohai Gong
- grid.258151.a 0000000107081323 School of Pharmaceutical Sciences Jiangnan University 214122 Wuxi Jiangsu People’s Republic of China
| | - Yun Chen
- grid.258151.a 0000000107081323 School of Pharmaceutical Sciences Jiangnan University 214122 Wuxi Jiangsu People’s Republic of China
| | - Ruiyu Zhu
- grid.258151.a 0000000107081323 School of Pharmaceutical Sciences Jiangnan University 214122 Wuxi Jiangsu People’s Republic of China
| | - Jianyong Lei
- grid.258151.a 0000000107081323 School of Pharmaceutical Sciences Jiangnan University 214122 Wuxi Jiangsu People’s Republic of China
| | - Jian Jin
- grid.258151.a 0000000107081323 School of Pharmaceutical Sciences Jiangnan University 214122 Wuxi Jiangsu People’s Republic of China
- grid.9227.e 0000000119573309 Institute of Health Sciences, Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai People’s Republic of China
| |
Collapse
|
11
|
Wu Q, Zhang J, Luo C, Zhang T, Wang T, Wang M. Expression and characterization of recombinant interleukin-21 receptor and its targeting single-chain variable fragment antibodies selected from a human phage display library. DNA Cell Biol 2012; 31:1541-8. [PMID: 22849297 DOI: 10.1089/dna.2012.1728] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Interleukin-21 receptor (IL-21R) is widely expressed in lymphocytes, and plays an important role in immunological cell proliferation and cytokine production. The present study aims to express a recombinant extracellular domain of human IL-21R (rhIL-21R-ECD) with high yield, and to screen the anti-IL-21R single-chain variable fragments (scFvs) from a synthetic human phage display library. The rhIL-21R-ECD, being expressed mainly as insoluble inclusion bodies in Escherichia coli BL21 (DE3), was purified and refolded. ELISA analysis showed that the refolded rhIL-21R-ECD bound to its ligand IL-21 in a concentration-dependent manner. Using a phage display technique, anti-IL-21R scFvs were screened from a naïve human phage display library by biopanning. After four rounds of panning, positive clones were isolated, sequenced, and characterized. The clone with highest activity was designated as C2. Flow cytometry analysis showed that the scFv C2 could recognize IL-21R on Jurkat cells. Furthermore, proliferation assay revealed a concentration-dependent inhibitory effect of C2 on the Jurkat cell, with fifty percent inhibitory concentration (IC(50)) of 78 nM. A human scFv antibody C2 with a high binding specificity to IL-21R was isolated and characterized. The antibody showed a concentration-dependent inhibitory effect on Jurkat cell proliferation.
Collapse
Affiliation(s)
- Qinhang Wu
- School of Life Science & Technology, China Pharmaceutical University, Nanjing, P.R. China
| | | | | | | | | | | |
Collapse
|
12
|
Pan X, Wu L, Cao J, Guo W, Wang Z, Han B, Hu W. Recombinant adenovirus vector-mediated human MDA-7 gene transfection suppresses hepatocellular carcinoma growth in a mouse xenograft model. J Biomed Res 2012; 26:53-8. [PMID: 23554730 PMCID: PMC3596080 DOI: 10.1016/s1674-8301(12)60007-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2011] [Revised: 11/04/2011] [Accepted: 12/17/2011] [Indexed: 11/28/2022] Open
Abstract
Hepatocellular carcinoma is one of the most common tumors in the world. The purpose of the present study was to investigate the inhibitory effects of adenoviral transduction of human melanoma differentiation-associated gene-7 (MDA-7) gene on hepatocellular carcinoma, so as to provide a theoretical basis for gene therapy of the disease. The human MDA-7 gene was cloned into replication-defective adenovirus specific to HepG2 cells using recombinant virus technology. RT-PCR and Western blotting assays were used to determine the expression of human MDA-7 mRNA and MDA-7 protein in HepG2 cells in vitro. Induction of apoptosis by overexpression of the human MDA-7 gene was determined by flow cytometry. In-vivo efficacy of adenoviral delivery of the human MDA-7 gene was assessed in nude mice bearing HepG2 cell lines in vivo by determining inhibition of tumor growth, VEGF and CD34 expression, and microvascular density (MVD). The results showed that AdGFP/MDA-7 induced apoptosis of HepG2 cells in vitro and significantly inhibited tumor growth in vivo (P < 0.05). The intratumoral MVD decreased significantly in the treated tumors (P < 0.05). We conclude the recombination adenovirus AdGFP/MDA-7 can effectively express biologically active human MDA-7, which leads to inhibition of hepatocellular carcinoma growth.
Collapse
Affiliation(s)
- Xinting Pan
- Department of Hepatobiliary Surgery, the Affiliated Hospital of Medical College of Qingdao University, Qingdao, Shandong 266000, China
| | | | | | | | | | | | | |
Collapse
|
13
|
DiScipio RG, Khaldoyanidi SK, Schraufstatter IU. Expression of soluble proteins in Escherichia coli by linkage with the acidic propiece of eosinophil major basic protein. Protein Expr Purif 2011; 79:72-80. [PMID: 21550406 DOI: 10.1016/j.pep.2011.04.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2011] [Revised: 04/23/2011] [Accepted: 04/26/2011] [Indexed: 01/10/2023]
Abstract
An expression method has been developed to produce soluble cationic polypeptides in Escherichia coli while avoiding inclusion body deposition. For this technique the recombinant product is linked through a thrombin or factor Xa susceptible bond to the amino-terminal domain of the precursor of eosinophil major basic protein (MBP). This N-terminal domain is strongly acidic and is apparently able to shield eosinophils from the potentially injurious activities of MBP. It was reasoned that constructs of this acidic domain with small heterologous cationic proteins expressed in E. coli could result in soluble expression while preventing trafficking and packaging into insoluble inclusion bodies. This has been demonstrated using four examples: complement C5a, CCL18, fibroblast growth factor-β, and leukemia inhibitory factor, whose isoelectric points range from 8.93 to 9.59. Further general applicability of this technique has been shown by using two different expression systems, one which encodes an amino-terminal oligo-histidine leash, and another that codes for an amino-terminal glutathione-S-transferase. Thus the utility of coupling MAP to cationic polypeptides for the purpose of soluble heterologous protein expression in E. coli has been demonstrated.
Collapse
Affiliation(s)
- Richard G DiScipio
- Torrey Pines Institute for Molecular Studies, San Diego, CA 92121, United States.
| | | | | |
Collapse
|
14
|
Chang H, Cheng A, Wang M, Zhu D, Jia R, Liu F, Chen Z, Luo Q, Chen X, Zhou Y. Cloning, expression and characterization of gE protein of duck plague virus. Virol J 2010; 7:120. [PMID: 20529349 PMCID: PMC2897786 DOI: 10.1186/1743-422x-7-120] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2010] [Accepted: 06/08/2010] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The gE protein of duck plague virus is the important membrane glycoprotein, its protein characterization has not been reported. In this study, we expressed and presented the characterization of the DPV gE product. RESULTS According to the sequence of the gE gene, a pair of primers were designed, and the DNA product with 1490bp in size was amplified by using the polymerase chain reaction (PCR). The PCR product was cloned into pMD18-T vector, and subcloned into pET32a(+), generating the recombinant plasmid pET32a/DPV-gE. SDS-PAGE analysis showed that the fusion pET32a/DPV-gE protein was highly expressed after induction by 0.2 mM IPTG at 30 degrees C for 4.5 h in Rosseta host cells. Over expressed 6xHis-gE fusion protein was purified by nickel affinity chromatography, and used to immunize the rabbits for the preparation of polyclonal antibody. The result of the intracellular localization revealed that the gE protein was appeared to be in the cytoplasm region. The real time PCR, RT-PCR analysis and Western blotting revealed that the gE gene was produced most abundantly during the late phase of replication in DPV-infected cells. CONCLUSIONS In this work, the DPV gE protein was successfully expressed in a prokaryotic expression system, and we presented the basic properties of the DPV gE product for the first time. These properties of the gE protein provided a prerequisite for further functional analysis of this gene.
Collapse
Affiliation(s)
- Hua Chang
- Avian Diseases Research Center, College of Veterinary Medicine of Sichuan Agricultural University, Yaan, Sichuan, China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Pan X, Sheng W, Zhu Q, Xie Y, Ye Z, Xiang J, Li D, Yang J. Inhibition of pancreatic carcinoma growth by adenovirus-mediated human interleukin-24 expression in animal model. Cancer Biother Radiopharm 2008; 23:425-34. [PMID: 18771346 DOI: 10.1089/cbr.2008.0461] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Interleukin-24 (IL-24) has been shown to be a tumor-suppressor gene and the protein product found to be constitutively expressed by melanocytes, nerve cells, and some primary melanomas. The potential effect of adenovirus (AdV)-mediated IL-24 gene therapy was explored on human pancreatic carcinoma by using a pancreatic carcinoma cell line, patu8988. A recombinant adenovirus, AdVGFP/IL-24, expressing the marker, green fluorescent protein (GFP), and the tumor-suppressor gene, IL-24, was constructed. AdVGFP/IL-24 treatment of pancreatic carcinoma cells in vitro significantly induced pancreatic carcinoma cell cytotoxicity and apoptosis, compared with AdVGFP without IL-24 expression. In nude mice bearing patu8988 tumors, intratumoral injections of AdVGFP/IL-24 significantly inhibited pancreatic carcinoma growth. In addition, the molecular mechanism of tumor suppression was elucidated by downregulating the expression of vascular endothelial growth factor, CD34, and Bcl-2, as well as inhibiting tumor angiogenesis. Therefore, AdVGFP/IL-24 has the potential to serve as a novel tool for pancreatic carcinoma gene therapy.
Collapse
Affiliation(s)
- Xinting Pan
- Department of General Surgery, First Hospital Affiliated to Soochow University, Suzhou, China
| | | | | | | | | | | | | | | |
Collapse
|
16
|
RGD-IL-24, A Novel Tumor-Targeted Fusion Cytokine: Expression, Purification and Functional Evaluation. Mol Biotechnol 2008; 41:138-44. [DOI: 10.1007/s12033-008-9115-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2008] [Accepted: 09/30/2008] [Indexed: 10/21/2022]
|
17
|
Effect of recombinant adenovirus vector mediated human interleukin-24 gene transfection on pancreatic carcinoma growth. Chin Med J (Engl) 2008. [DOI: 10.1097/00029330-200810020-00016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
18
|
Sharma K, Babu PVC, Sasidhar P, Srinivas VK, Mohan VK, Krishna E. Recombinant human epidermal growth factor inclusion body solubilization and refolding at large scale using expanded-bed adsorption chromatography from Escherichia coli. Protein Expr Purif 2008; 60:7-14. [PMID: 18430585 DOI: 10.1016/j.pep.2008.02.020] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2007] [Revised: 02/19/2008] [Accepted: 02/27/2008] [Indexed: 11/17/2022]
Abstract
Amongst the various endogenous growth factors, epidermal growth factor (EGF) plays an important role in normal wound healing of tissue such as skin, cornea and gastrointestinal tract. Various studies have proved that supplementing recombinant human EGF (rhEGF) results in significant augmentation of wound healing. In the present work, a high level expression system with poly-arginine sequences was used for the production of recombinant human EGF (rhEGF) as inclusion bodies. The inclusion bodies were solubilized and the protein was refolded by using expanded-bed adsorption chromatography. The renatured protein was digested with appropriate concentration of trypsin and subsequently the digested rhEGF is purified by passing through ion-exchange chromatography (Toyopearl-SP) to obtain a biologically active protein. This process is the shortest process with reduced number of steps of purification, eliminates the usage of preparative reversed phase HPLC (RP-HPLC) for final purification, which is an expensive technique. The purified protein was analyzed by RP-HPLC, showing a purity > 99% and size exclusion chromatography profile shows that there are minimal aggregates, with 99% renatured active protein. The purified rhEGF showed a specific activity of 5 x 10(5) IU/mg protein, in comparison with NIBSC standard (1st International Standard of rDNA-derived EGF, Code 91/530). The process has been successfully adopted at 100 L fermentation scale and the rhEGF based formulation has been commercialized with brand name REGEN D, with excellent clinical results.
Collapse
Affiliation(s)
- K Sharma
- Bharat Biotech International Limited, Genome Valley, Shameerpet, Turkapally, Hyderabad, AP 500078, India
| | | | | | | | | | | |
Collapse
|