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Related Experiment Videos

Surface-modified membranes as a matrix for protein purification.

P Langlotz1, K H Kroner

  • 1GBF-Gesellschaft für Biotechnologische Forschung mbH, Germany.

Journal of Chromatography
|February 7, 1992
PubMed
Summary

Researchers developed new membrane chromatography supports for protein separation. These membranes, functionalized with protein A, efficiently purified monoclonal antibodies from cell culture, demonstrating practical application in bioprocessing.

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Area of Science:

  • Biochemistry
  • Separation Science
  • Biotechnology

Background:

  • Membrane chromatography offers a novel approach for protein separation.
  • Existing membrane supports are pre-functionalized or activated for ligand coupling.
  • Epoxy-activated membranes provide a versatile platform for affinity ligand immobilization.

Purpose of the Study:

  • To determine optimal coupling conditions for protein A and immunoglobulin G onto epoxy-activated membranes.
  • To evaluate the performance of prepared affinity membranes for protein purification.
  • To demonstrate the practical application of protein A membranes for monoclonal antibody purification from cell culture supernatant.

Main Methods:

  • Immobilization of protein A and immunoglobulin G onto epoxy-activated membranes.

Related Experiment Videos

  • Optimization of coupling conditions for ligand attachment.
  • Purification of rabbit immunoglobulin G and protein A using prepared affinity membranes.
  • Purification of monoclonal antibodies from cell culture supernatant using protein A membranes and comparing with ion-exchange membranes.

    • Main Results:

    • Optimal coupling conditions for protein A and immunoglobulin G were established.
    • The prepared protein A affinity membranes showed effective purification of model proteins.
    • Successful purification of monoclonal antibodies from cell culture supernatant was achieved using the developed protein A membrane.
    • Performance comparison indicated the utility of the affinity membrane over ion-exchange membranes for specific applications.

    Conclusions:

    • Epoxy-activated membranes are suitable supports for developing affinity chromatography membranes.
    • Protein A-functionalized membranes are effective for purifying monoclonal antibodies.
    • This technology holds promise for efficient bioseparation and purification processes in biotechnology.