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1.
Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi ; 26(7): 663-6, 2010 Jul.
Article in Chinese | MEDLINE | ID: mdl-20619090

ABSTRACT

AIM: Preparation of monoclonal antibody (mAb) against GP73 protein. METHODS: The N-terminal peptide (AAAERGAVELK) of GP73 protein was displayed on T7 phage, the recombinant phage was amplified and used as the immunogen to immunize mouse to produce antibody. The titer of the antiserum and the positive hybridoma clones which secreted the mAb against GP73 protein were detected by ELISA. The mAb specificity was assayed by ELISA and Western blot. RESULTS: The high specificity mAb against GP73 protein was selected from the mouse immunized with the recombinant T7 phages displaying the epitope of GP73 by cell fusion and screening. CONCLUSION: The appropriate protein epitope displayed on T7 phage could be used as alternative antigen to immunize animals to make specific antibody against the corresponding native protein.


Subject(s)
Antibodies, Monoclonal/immunology , Epitopes/immunology , Membrane Proteins/immunology , Animals , Antibodies, Monoclonal/analysis , Antibody Specificity , Enzyme-Linked Immunosorbent Assay , Epitopes/genetics , Female , Humans , Membrane Proteins/genetics , Mice , Mice, Inbred BALB C
2.
Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi ; 26(8): 774-6, 2010 Aug.
Article in Chinese | MEDLINE | ID: mdl-20619106

ABSTRACT

AIM: To make monoclonal antibody(mAb) against human HPPCn for the use in research on HPPCn's function and its relationship with liver diseases. METHODS: The female BALB/c mice were immunized with the recombinant HPPCn proteins. Splenocytes and Sp2/0 cells were fused with PEG-1500. The positive clone was identified through indirect ELISA and then subcloned by limited dilution. Indirect ELISA, Western blot and Ig sub-class identification kit were used to identify the mAb's properties. By immunofluorescence experiments, we studied the cellular localization of HPPCn. The mAb epitope was also analyzed using peptide phage display technology. RESULTS: An anti-HPPCn mAb, named W2-D5, was obtained. It belongs to IgG1 subclass. It could specially bind to human HPPCn. Furthermore, by immunofluorescence results, wo confirmed HPPCn located in the nucleus and our mAb could combined with the natural protein. With the mAb, the minimal detectable concentration was 0.1 µg/L for HPPCn; The peptide sequence of HPPCn7₋13;(IHLELRN)was identified as the epitope of the mAb. CONCLUSION: An anti-HPPCn mAb with high specificity and high affinity was successfully obtained.


Subject(s)
Antibodies, Monoclonal/immunology , Hepatocyte Growth Factor/immunology , Animals , Antibodies, Monoclonal/analysis , Antibody Specificity , Enzyme-Linked Immunosorbent Assay , Female , Humans , Immunoglobulin G/analysis , Immunoglobulin G/immunology , Mice , Mice, Inbred BALB C
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