Expression of human Id-2 gene in Escherichia coli and preparation of the antisera against human Id-2 / 南方医科大学学报
Journal of Southern Medical University
;
(12): 1094-1097, 2009.
Article
in Chinese
| WPRIM
| ID: wpr-282612
ABSTRACT
<p><b>OBJECTIVE</b>To express the fusion protein of glutathione S-transferase (GST) and human Id-2 in E. coli and prepare the polyclonal antibodies against Id-2.</p><p><b>METHODS</b>The coding sequence of Id-2 gene was amplified by RT-PCR from the total RNA of breast cancer tissue. The recombinant plasmid was identified by PCR, restriction endonuclease digestion analysis and sequencing. The fusion protein GST-Id-2 expressed in E. coli following IPTG induction was purified by glutathione-agarose affinity chromatography and used to immunize rabbits to prepare the polyclonal antibodies against GST-Id-2.</p><p><b>RESULTS</b>PCR, restriction endonuclease digestion and sequence analyses showed that the Id-2 gene had been correctly inserted into pGEX-6P-1 vector, and the GST-Id-2 fusion protein expressed had a relative molecular mass of approximately 40,000 as shown by SDS-PAGE. The polyclonal antibodies obtained from the rabbit sera were found to specifically react with purified Id-2 by Western blotting, ELISA and agar gel immunodiffusion (AGP).</p><p><b>CONCLUSION</b>The prepared polyclonal antibodies against Id-2 allow effective Id-2 detection and facilitate further investigation of the structure and antigen epitope of Id-2.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Recombinant Proteins
/
Breast Neoplasms
/
Allergy and Immunology
/
Escherichia coli
/
Inhibitor of Differentiation Protein 2
/
Genetics
/
Immune Sera
/
Metabolism
/
Antibodies, Monoclonal
Limits:
Animals
/
Female
/
Humans
Language:
Chinese
Journal:
Journal of Southern Medical University
Year:
2009
Type:
Article
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