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A general platform for antibody purification utilizing engineered-micelles.

Gunasekaran Dhandapani1, Assaf Howard1, Thien Van Truong1

  • 1a Department of Chemical Sciences , Ariel University , Ariel , Israel.

Mabs
|January 9, 2019
PubMed
Summary
This summary is machine-generated.

This study presents a novel antibody purification method using engineered micelles, avoiding chromatography and ligands. This technique efficiently captures and extracts antibodies, yielding high purity and preserving antibody integrity.

Keywords:
Antibody purificationChromatographyIgGProtein AProtein G

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Area of Science:

  • Biochemistry
  • Chemical Engineering
  • Materials Science

Background:

  • Traditional antibody purification often relies on chromatography or specific ligands like Protein A.
  • These methods can be costly and may not always preserve antibody integrity.
  • There is a need for alternative, efficient, and scalable antibody purification platforms.

Purpose of the Study:

  • To introduce a new platform for antibody purification based on engineered detergent aggregates.
  • To demonstrate the efficacy of this method in capturing and extracting antibodies while removing impurities.
  • To evaluate the purity, yield, and integrity of purified antibodies.

Main Methods:

  • Development of "Engineered-micelles" using Tween-20, bathophenanthroline, and Fe2+ ions.
  • Application of these micelles for capturing human or mouse IgGs from serum-free media.
  • Extraction of captured antibodies using various buffers at pH 3.8.
  • Analysis of antibody purity, yield, secondary structure, specificity, and monomeric character.

Main Results:

  • Antibodies were recovered with good overall yields (70-80% by densitometry).
  • The method achieved high purity, comparable to Protein A or Protein G resin purification.
  • Purified antibodies retained their secondary structure, specificity, and monomeric form.

Conclusions:

  • Engineered micelles offer a promising, ligand-free platform for antibody purification.
  • This method provides an efficient alternative to traditional chromatography, yielding high-purity antibodies.
  • The technique preserves critical antibody attributes, making it suitable for various applications.