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Miyamoto, T. et al.

Production and characterization of monoclonal antibodies detecting chicken interleukin-2 and the development of an antigen capture enzyme-linked immunosorbent assay.

Eleven monoclonal antibodies (mAbs) which are specific for chicken interleukin-2 (chIL-2) were produced and characterized by enzyme-linked immunosorbent assay (ELISA), Western blotting and neutralizing assays. These mAbs were used to develop a mAb-based antigen capture ELISA specific for chicken IL-2 detection. Anti-IL-2 mAbs bound specifically to E. coli-derived rchIL-2 in ELISA and identified a 16kDa IL-2 polypeptide band in Western blot. Several mAbs were shown to neutralize the biological activities of both rchIL-2 and native chicken IL-2 as measured by concanavalin A (ConA)-induced lymphocyte proliferation assay, IL-2 bioassay, and natural killer cell assay. Among the neutralizing mAbs, the mAb chIL-2/11 was most potent in neutralizing IL-2 activity. To develop a sensitive ELISA for the detection of chicken IL-2, an antigen capture ELISA was developed using the mAb chIL-2/16 as the antigen capture antibody and rabbit anti-IL-2 peptide antibody as the detection antibody. Using the mAb-based antigen capture ELISA, significant correlation between the level of IL-2 detected in bioassays and in ELISA was observed. These results showed that the mAb-based antigen capture ELISA is less time-consuming and more reliable compared to a conventional IL-2 bioassay for chicken IL-2. These neutralizing mAbs will facilitate basic immunobiological studies of the role of IL-2 in normal and disease states in chickens.[1]

References

Production and characterization of monoclonal antibodies detecting chicken interleukin-2 and the development of an antigen capture enzyme-linked immunosorbent assay. Miyamoto, T., Lillehoj, H.S., Sohn, E.J., Min, W. Vet. Immunol. Immunopathol. (2001) [Pubmed]

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