CLONING, OPTIMIZATION OF EXPRESSION CONDITION, PURIFICATION AND IMMUNOLOGICAL CHARACTERIZATION OF HYDROPHILIC SECTION OF HCV CORE AG, EXPRESSED IN E.COLI BY T7-ARABAD PROMOTER

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AGHASADEGHI M.R.; SADAT S.M.; AMINI SAFIEH; BUDKOWSKA A.; ROUHVAND F.

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Journal: The Scientific Journal of Iranian Blood Transfusion Year:2006 | Volume:2 | Issue:6 Page(s): 223-230

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Title

CLONING, OPTIMIZATION OF EXPRESSION CONDITION, PURIFICATION AND IMMUNOLOGICAL CHARACTERIZATION OF HYDROPHILIC SECTION OF HCV CORE AG, EXPRESSED IN E.COLI BY T7-ARABAD PROMOTER

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Keywords

HEPATITIS C CORE ANTIGENQ4

ARABINOSEQ4

NI-NTAQ4

PROMOTERQ4

Abstract

Background and ObjectivesThe capsid or core Ag of Hepatitis C virus is a multifunctional protein which has the principal pathogenesis and diagnostic role in HCV related infections and most of these properties are attributed to the hydrophilic section (amino acids 1-122) of this protein. For different research and diagnostic applications, high amounts of this protein in pure and original form are required. So, the aim of this study was to clone the gene, optimize the expression condition, purify it in the original form, and immunologically characterize hydrophilic section of HCV Core Ag, expressed by T7-araBAD PROMOTER system in E.coli.Materials and MethodsThe PCR amplified region corresponding to 2-122 section of this Ag from genotype Ib was cloned in pIVEX 2.3, a T7 PROMOTER derived vector. The proper construct after digestional analysis and sequencing confirmations was transformed into BL21-AI E.coli, and protein expression under control of araBAD PROMOTER by addition of 0.2% ARABINOSE was induced.ResultsAfter optimization of expression condition, purification of protein by NI-NTA agarose gel chromatography in native condition by immidazole yielded about 3.5mg/L of HCV core Ag. Immunological studies by western blotting through application of core specific mAbs and results of ELISA tests indicated that the protein is with desired immunological properties.ConclusionsAraBAD PROMOTER can be perfectly utilized to produce the hydrophilic section of HCV core in high yields, and purification through NI-NTA in native condition may provide the antigen for different research and diagnostic applications.

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APA: Copy

AGHASADEGHI, M.R., SADAT, S.M., AMINI, SAFIEH, BUDKOWSKA, A., & ROUHVAND, F.. (2006). CLONING, OPTIMIZATION OF EXPRESSION CONDITION, PURIFICATION AND IMMUNOLOGICAL CHARACTERIZATION OF HYDROPHILIC SECTION OF HCV CORE AG, EXPRESSED IN E.COLI BY T7-ARABAD PROMOTER. THE SCIENTIFIC JOURNAL OF IRANIAN BLOOD TRANSFUSION ORGANIZATION (KHOON), 2(6), 223-230. SID. https://sid.ir/paper/78619/en

Vancouver: Copy

AGHASADEGHI M.R., SADAT S.M., AMINI SAFIEH, BUDKOWSKA A., ROUHVAND F.. CLONING, OPTIMIZATION OF EXPRESSION CONDITION, PURIFICATION AND IMMUNOLOGICAL CHARACTERIZATION OF HYDROPHILIC SECTION OF HCV CORE AG, EXPRESSED IN E.COLI BY T7-ARABAD PROMOTER. THE SCIENTIFIC JOURNAL OF IRANIAN BLOOD TRANSFUSION ORGANIZATION (KHOON)[Internet]. 2006;2(6):223-230. Available from: https://sid.ir/paper/78619/en

IEEE: Copy

M.R. AGHASADEGHI, S.M. SADAT, SAFIEH AMINI, A. BUDKOWSKA, and F. ROUHVAND, “CLONING, OPTIMIZATION OF EXPRESSION CONDITION, PURIFICATION AND IMMUNOLOGICAL CHARACTERIZATION OF HYDROPHILIC SECTION OF HCV CORE AG, EXPRESSED IN E.COLI BY T7-ARABAD PROMOTER,” THE SCIENTIFIC JOURNAL OF IRANIAN BLOOD TRANSFUSION ORGANIZATION (KHOON), vol. 2, no. 6, pp. 223–230, 2006, [Online]. Available: https://sid.ir/paper/78619/en

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