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Published on: December 1, 2020
Ultrafast affinity extraction with non-covalent entrapment for biointeraction analysis: development and applications
Isaac Kyei1, Kyungah Suh1, Nigar Sultana Pinky1
1Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588, USA.
Summary
Ultrafast affinity extraction (UAE) now uses non-covalent entrapment for immobilizing human serum albumin, enabling efficient study of drug-protein interactions and binding kinetics.
Area of Science:
- Biochemistry
- Analytical Chemistry
- Pharmacology
Background:
- Reversible biomolecular interactions are crucial for biological processes.
- Ultrafast affinity extraction (UAE) is a technique to measure binding and rate constants.
- Traditional UAE uses covalent coupling for immobilizing capture agents.
Purpose of the Study:
- To investigate non-covalent entrapment for immobilizing human serum albumin (HSA) as a capture agent in UAE.
- To evaluate this method for studying drug interactions with HSA.
- To compare binding and rate constants with established methods.
Main Methods:
- Immobilization of HSA via non-covalent entrapment within microcolumns.
- Application of UAE to study interactions with racemic warfarin and repaglinide.
- Comparison of UAE results with covalently immobilized HSA and reference values.
Main Results:
- Demonstrated successful immobilization of HSA using non-covalent entrapment.
- Accurate determination of binding and rate constants for drug-HSA interactions.
- Validation of the non-covalent entrapment method against covalent coupling.
Conclusions:
- Non-covalent entrapment is a viable alternative for HSA immobilization in UAE.
- This method provides reliable binding and rate constants for drug-protein interactions.
- Offers potential for broader application in studying diverse biointeractions.
Keywords:
Binding and rate constantsDrug-protein bindingEntrapmentHuman serum albuminSingle- or multi-site bindingUltrafast affinity extractionMore Related Videos
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