A sub-library based on peptide mimic 125 was designed and constructed, and 18 phagotopes specifically binding 8H5mAb were isolated. Antisera against three phagotopes, containing peptide 12MH-1, 12MH-5 and 12MH-8 reacted with 3 different H5N1 virus strains, but not with 2 H1N1 and 2 H3N2 viruses by Dot blots. The affinity of 12MH-8 was approximately eight times more than 12MH-1 or 12MH-5 or parent peptide 125. Furthermore, synthesized 12MH-1 and 12MH-8 could block the 8H5mAb binding with 4 H5N1 virus strains via hemagglutinin inhibition. These results suggest that these 3 mimotopes closely mimics the native 8H5 epitopes.
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| http://dx.doi.org/10.1016/j.vetmic.2010.02.032 | DOI Listing |
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Induction of cross-reactive antibodies against mimotopes of H5N1 hemagglutinin.
Vet Microbiol
September 2010
National Institute of Diagnostics and Vaccine Development in Infectious Diseases, The Key Laboratory of the Ministry of Education for Cell Biology and Tumor Cell Engineering, School of Life Sciences, Xiamen University, Xiamen 361005, China.
A sub-library based on peptide mimic 125 was designed and constructed, and 18 phagotopes specifically binding 8H5mAb were isolated. Antisera against three phagotopes, containing peptide 12MH-1, 12MH-5 and 12MH-8 reacted with 3 different H5N1 virus strains, but not with 2 H1N1 and 2 H3N2 viruses by Dot blots. The affinity of 12MH-8 was approximately eight times more than 12MH-1 or 12MH-5 or parent peptide 125.
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