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MEP HyperCel chromatography II: binding, washing and elution.

Tsutomu Arakawa1, Mutsumi Futatsumori-Sugai, Kouhei Tsumoto

  • 1Alliance Protein Laboratories, Thousand Oaks, CA 91360, USA. tarakawa2@aol.com

Protein Expression and Purification
|November 17, 2009
PubMed
Summary
This summary is machine-generated.

MEP HyperCel chromatography effectively binds monoclonal antibodies but also co-purifies contaminants. Ethylene glycol and arginine solutions enable selective elution, demonstrating MEP

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Area of Science:

  • Biochemistry
  • Chromatography
  • Protein Purification

Background:

  • Monoclonal antibodies (mAbs) are crucial therapeutics, requiring efficient purification methods.
  • MEP HyperCel chromatography is a novel resin for protein purification.
  • Understanding binding and elution characteristics is key for optimizing purification protocols.

Purpose of the Study:

  • To investigate the binding, washing, and elution conditions for MEP HyperCel chromatography.
  • To evaluate the selectivity of MEP HyperCel for monoclonal antibodies and contaminants like bovine serum albumin (BSA).
  • To determine the utility of MEP HyperCel for removing BSA and purifying Fc-fusion proteins.

Main Methods:

  • MEP HyperCel chromatography was used to purify humanized IgG1 monoclonal antibodies and bovine serum albumin (BSA) from conditioned media (CM).
  • Various elution agents including inorganic salts, ethanol, glycerol, ethylene glycol, 2-propanol, urea, and arginine were tested.
  • Binding and elution of Fc-fusion proteins from silkworm larvae were also assessed.

Main Results:

  • Monoclonal antibodies bound to MEP HyperCel without pretreatment, but contaminating proteins and BSA also bound.
  • Ethylene glycol and 2-propanol showed varying elution effectiveness, while inorganic salts, ethanol, and glycerol were ineffective.
  • Bound BSA and contaminants were eluted with ethylene glycol, followed by antibody elution with aqueous arginine solutions.
  • MEP HyperCel demonstrated selectivity for BSA removal, but Fc-fusion proteins from silkworm larvae showed no detectable binding due to competing serum proteins.

Conclusions:

  • MEP HyperCel chromatography can be optimized for monoclonal antibody purification by using ethylene glycol and arginine for selective elution.
  • The resin exhibits utility for removing BSA from samples.
  • MEP HyperCel shows limited applicability for purifying Fc-fusion proteins from silkworm larvae, as demonstrated by the lack of binding and competition from serum proteins.