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Monoclonal antibodies specific for beta-adrenergic ligands
Journal of Immunology (Baltimore, Md. : 1950)
|September 1, 1984
Summary
Researchers developed monoclonal antibodies targeting alprenolol, a beta-adrenergic ligand. These antibodies exhibit varying affinities and stereospecificity, aiding in the study of drug interactions and receptor binding.
Area of Science:
- Immunology
- Pharmacology
- Biochemistry
Background:
- Monoclonal antibodies are crucial tools in biological research and diagnostics.
- Understanding beta-adrenergic receptor interactions is vital for developing targeted therapeutics.
Purpose of the Study:
- To generate and characterize monoclonal antibodies against alprenolol.
- To investigate the binding characteristics and specificity of these anti-alprenolol antibodies.
Main Methods:
- Somatic cell fusion of mouse splenocytes and NS-1 myeloma cells to produce hybridomas.
- Enzyme-Linked Immunosorbent Assay (ELISA) for antibody screening.
- [3H]-l-dihydroalprenolol binding assays for competitive inhibition studies.
Main Results:
- Eight hybridoma clones secreting anti-alprenolol antibodies were obtained.
- Antibodies displayed association constants for alprenolol ranging from 1.9 x 10^6 to 2.4 x 10^7 M^-1.
- Cross-reactivity with beta-adrenergic ligands was observed, with higher avidity for antagonists than agonists; some antibodies showed stereospecificity for the l-isomer.
Conclusions:
- Successfully generated monoclonal antibodies against alprenolol with defined binding affinities and specificities.
- The characterized antibodies are valuable tools for studying beta-adrenergic ligand interactions.
- Tryptophan fluorescence changes upon ligand binding offer a method for physicochemical analysis of hapten-antibody interactions.