PMID: 20104763Jan 29, 2010Paper

Preparations of the specific antibodies against exon 2 and exon 3 of human tau protein

Zhonghua shi yan he lin chuang bing du xue za zhi = Zhonghua shiyan he linchuang bingduxue zazhi = Chinese journal of experimental and clinical virology
Cao ChenXiao-ping Dong

Abstract

To prepare the specific antibodies against exon 2 and exon 3 of human tau protein. Sequences encoding exon 2 and exon 3 of human tau protein were amplified from human peripheral blood DNA and cloned into a prokaryotic expression vector pGEX-2T. Fusion proteins GST-E2 and GST-E3 were expressed and purified from E. coli system. The antisera were elicited by immunization of the purified fusion proteins to rabbits and mice. The specific antibodies were purified by Protein G/A and CNBr-activated sepharose 4B coupled with GST protein. The specificity and sensitivity of the purified antibodies were evaluated by Western blotting and ELISA. Recombinant fusion proteins GST-E2 and GST-E3 were expressed and purified from E. coli, which showed Mr. 29 x 10(3). Various antisera were collected from the immunized experimental animals. Reliable immunoreactive specificity and titers of the purified antibodies against exon 2 and exon 3 of human tau protein were confirmed by Western blotting and ELISA after serial purification processes. Four specific antibodies against exon 2 and exon 3 of human tau protein have been successfully prepared, which provides basis for analyzing the role of tau in neurodegenerative diseases.

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