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Membrane-based receptor affinity chromatography.

M Nachman1, A R Azad, P Bailon

  • 1Protein Biochemistry Department, Roche Research Center, Hoffmann-La Roche Inc., Nutley, NJ 07110.

Journal of Chromatography
|April 24, 1992
PubMed
Summary
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Membrane-based receptor affinity chromatography (MRAC) offers efficient purification for biomolecules like human interleukin-2. This scalable method uses oriented receptors on membranes for high-yield protein purification.

Area of Science:

  • Biochemistry
  • Biotechnology
  • Separation Science

Background:

  • Affinity chromatography is crucial for purifying biomolecules.
  • Existing methods face challenges in scalability and efficiency.
  • Membrane-based approaches offer potential advantages.

Purpose of the Study:

  • To develop and evaluate membrane-based receptor affinity chromatography (MRAC) for biomolecule purification.
  • To investigate factors affecting MRAC performance.
  • To demonstrate MRAC's applicability in purifying specific proteins.

Main Methods:

  • Utilized immobilized interleukin-2 receptor (IL-2R) on hollow-fiber membranes.
  • Employed a model system with anti-Tac-H (anti-IL-2R antibody).
  • Analyzed support morphology, mass transfer, and adsorption kinetics.

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Main Results:

  • MRAC demonstrated high efficiency in purification.
  • Optimized factors included support morphology, mass transfer, and kinetics.
  • Successfully purified anti-Tac-H, recombinant human interleukin-2 (rIL-2), and IL2-PE40 fusion protein.

Conclusions:

  • MRAC is a viable and scalable affinity purification technique.
  • The method is highly productive for various biomolecules.
  • Oriented immobilization of receptors enhances purification efficiency.