Abstract
Monoclonal antibodies were raised against a β-naphthyl phosphonate hapten (1) to elicit antibodies capable of catalyzing the hydrolysis of β-naphthyl acetate (3). After cell fusion, potential catalytic antibody-producing hybridomas were selected, by use of a competitive inhibition assay on the basis of the binding activity for a short transition-state analogue (inhibitor 5), followed by use of high-performance liquid chromatography analysis for the hybridoma supernatants to screen the antibodies processing catalytic activities. It was shown that supernatants of 12 wells had high binding activity with inhibitor and of them, 7 had catalytic activities. After cloning by limiting dilution, we got two hybridoma clones producing monoclonal antibodies which catalyzed the hydrolysis of β-naphthyl acetate. This combination of competitive inhibition assay with high-performance liquid chromatography analysis represents an improved rapid approach for the screening of potential catalytic antibodies and significantly increases the possibility of obtaining efficient catalytic monoclonal antibodies. Further study of the catalytic antibodies revealed significant rate enhancement (K cat/K uncat ∼ 106) and specificity.
Similar content being viewed by others
REFERENCES
Kohler, G., and Milstein, C. (1975). Nature 256, 495.
Lerner, R. A., et al. (1986). Science 234, 1566–1570.
Pauling, L. (1948). Ann. Sci. 36, 51–58.
Schultz, P. G., et al. (1986). Science 234, 1570–1573.
Tawfik, D. S., et al. (1990). Biochemistry 29, 9916–9921.
Tawfik, D. S., et al. (1993). Proc. Natl. Acad. Sci. USA 90, 373–377.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Yuan, Y.R., Yang, B.H. & Ji, Y.Y. An Improved Rapid Method for Selecting Monoclonal Antibodies with High Catalytic Activities. J Protein Chem 16, 733–738 (1997). https://doi.org/10.1023/A:1026355614913
Published:
Issue Date:
DOI: https://doi.org/10.1023/A:1026355614913