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Published on: August 16, 2019
Small-molecule-based affinity chromatography method for antibody purification via nucleotide binding site targeting.
Nathan J Alves1, Samuel D Stimple, Michael W Handlogten
1Department of Chemical and Biomolecular Engineering, University of Notre Dame, Indiana 46556, United States.
Analytical Chemistry
|August 30, 2012
Summary
Researchers developed a new antibody purification method using the nucleotide binding site (NBS) as a target. This novel affinity chromatography technique offers high purity and recovery, with potential for cost reduction in antibody production.
Area of Science:
- Biochemistry
- Protein Chemistry
- Affinity Chromatography
Background:
- The nucleotide binding site (NBS) within the antibody's Fab variable domain is an underutilized molecular target.
- Efficient antibody purification is crucial for pharmaceutical production and research applications.
Purpose of the Study:
- To develop a novel affinity chromatography method for antibody purification targeting the NBS.
- To evaluate the efficacy of a new NBS-targeting affinity column for antibody recovery and purity.
Main Methods:
- Preparation of an NBS-targeting affinity column (NBS(IBA)) by coupling indole butyric acid (IBA) to ToyoPearl resin.
- Purification of the chimeric pharmaceutical antibody rituximab using the NBS(IBA) column.
- Elution of bound antibodies using a mild NaCl gradient at pH 7.0.
Main Results:
- The NBS(IBA) column selectively captured and retained antibodies from complex mixtures.
- Antibody recovery exceeded 95% with purity greater than 98%.
- Successful purification was demonstrated from cell culture supernatant, hybridoma media, and mouse ascites fluid.
Conclusions:
- The NBS(IBA) column represents a viable small-molecule-based affinity chromatography method for antibody purification.
- This method has significant implications for industrial antibody production, potentially improving batch quality and reducing costs.
- The NBS(IBA) platform offers advantages in column durability and overall production efficiency.
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