Ultrastable antibody ionic liquids
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United States of America Patent
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May 24, 2022
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N/A
app pub date -
Oct 4, 2019
filing date -
Oct 4, 2019
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Abstract
A method for creating a stable protein/antibody ionic liquid, comprising: (a) cationizing aqueous proteins/antibodies by addition of an excess of a positively-charged crosslinker in the presence of a coupling reagent; (b) purifying the cationized proteins/antibodies; (c) titrating the cationized proteins/antibodies with a corresponding biologically-compatible counter anionic polymer to create at least one protein/antibody cation/anion pair in aqueous solution until the cation/anion pair solution becomes negative by zeta potential measurement; (d) repeatedly dialyzing the protein/antibody cation/anion pair in water to remove excess anionic polymer using at least one molecular weight cutoff 7000 dialysis membrane; (e) lyophilizing the protein/antibody cation/anion pair to remove most of the water, forming a lyophilized solid; and (f) heating the lyophilized solid until a protein/antibody ionic liquid is generated. The antibody may be any desired antibody, and the anion may be any biologically-compatible anion.
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