Undenatured virus-free biologically active protein derivatives
AssigneeNew York Blood Center, Inc.
InventorsAlexander R. Neurath, Bernard Horowitz
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Abstract
A mammalian blood protein-containing composition such as whole blood, plasma, serum, plasma concentrate, cryoprecipitate, cryosupernatant, plasma fractionation precipitate or plasma fractionation supernatant substantially free of hepatitis and other lipid coated viruses with the yield of protein activity to total protein being at least 80% is disclosed. The protein-containing composition is contacted with di- or trialkylphosphate, preferably a mixture of trialkylphosphate and detergent, usually followed by removal of the di- or trialkylphosphate.
Claims34
A process for rendering a blood product which comprises a labile blood protein substantially free of lipid-containing viruses without incurring substantial protein denaturation which comprises contacting said blood product with an effective amount of a di- or trialkylphosphate for a period of time sufficient to render said blood product substantially free of lipid-containing viruses without incurring substantial protein denaturation.
A process according to claim 22 wherein the composition which is heated comprises a protein stabilizer which stabilizes a protein against denaturation by heat.
Dependencies are inferred from the claim text.