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ELUTION OF BIOMOLECULES FROM MULTI-MODAL RESINS USING MES AND MOPS AS MOBILE PHASE MODIFIERS

  • US 20200131493A1
  • Filed: 12/23/2019
  • Published: 04/30/2020
  • Est. Priority Date: 10/24/2012
  • Status: Active Grant
First Claim
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1. A method for purifying or enriching a biomolecule, said method comprising the steps:

  • (a) providing an aqueous solution containing said biomolecule;

    (b) contacting said aqueous solution with a multimodal resin;

    (c) optionally washing the multimodal resin with an aqueous washing buffer;

    (d) eluting the biomolecule from the multimodal resin by an aqueous buffer solution,wherein said aqueous buffer solution comprises one or more of;

    (i) at least 15 mM of a Good'"'"'s buffer;

    (ii) between 0 and 400 mM alanine, arginine, asparagine, aspartic acid, cysteine, glutamic acid, glutamine, glycine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, proline, serine, threonine, tryptophan, tyrosine, or valine;

    (iii) between 0 and 400 mM guanidinium chloride, guanidinium thiocyanate, ammonium chloride, ammonium sulfate, ammonium phosphate, ammonium acetate, sodium chloride, sodium citrate, sodium caprylate, sodium phosphate, sodium iodide, potassium chloride, potassium citrate, potassium sulfate, potassium phosphate, potassium iodide, magnesium chloride, magnesium sulfate, magnesium phosphate, calcium chloride, calcium sulfate, calcium phosphate, or taurine; and

    (iv) between 1% and 60% (v/v) of ethylene glycol or propylene glycol or a mixture of ethylene glycol and propylene glycol; and

    (e) collecting biomolecule containing fractions, thereby obtaining the biomolecule in purified or enriched form.

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