Expression and Purification of Recombinant Hepatitis Delta Virus (HDV) Antigen for Use in a Diagnostic ELISA for HDV Infection Using the High-Density Fermentation Strategy in Escherichia coli / 生物医学与环境科学(英文)
Biomedical and Environmental Sciences
; (12): 417-423, 2016.
Article
in En
| WPRIM
| ID: wpr-258804
Responsible library:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>Hepatitis Delt a Virus (HDV) antigen is widely used as a capture antigen in ELISAs for the identification of HDV infection; large amounts of recombinant HDV antigen with active antigenicity are required for this purpose.</p><p><b>METHODS</b>Reconstruct the gene of HDV antigen based on the bias code of Escherichia coli, the recombinant protein expresses by high-density fermentation with fed-batch feeding strategy, and purify by immobilized metal chromatography. The sensitivity and specificity of this antigen detect by ELISA method.</p><p><b>RESULTS</b>The expression of HDV antigen can reach 20% of the total cell mass in the soluble form. The recombinant HDV antigen can be conveniently purified (98%) by immobilized metal ion affinity chromatography (IMAC) using the interaction between a His-tag and nickel ions. Production of recombinant HDV antigen can reach 0.5 g/L under conditions of high-density cell fermentation. Applied to the diagnostic ELISA method, the recombinant HDV antigen shows excellent sensitivity (97% for IgM and 100% for IgG) and specificity (100% for IgG and IgM) for the detection of anti-HDV antibodies.</p><p><b>CONCLUSION</b>Expression and purification the recombinant HDV antigen as a candidate protein for application in a diagnostic ELISA for HDV infection. Large-scale production of the protein can be achieved using the high-density fermentation strategy.</p>
Key words
Full text:
1
Index:
WPRIM
Main subject:
Virology
/
Hepatitis D
/
Recombinant Proteins
/
Enzyme-Linked Immunosorbent Assay
/
Hepatitis Delta Virus
/
Hepatitis delta Antigens
/
Diagnosis
/
Allergy and Immunology
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Escherichia coli
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Fermentation
Type of study:
Diagnostic_studies
Language:
En
Journal:
Biomedical and Environmental Sciences
Year:
2016
Type:
Article