Succinylated interleukin-2 for pharmaceutical compositions

Chemistry: natural resins or derivatives; peptides or proteins; – Proteins – i.e. – more than 100 amino acid residues – Lymphokines – e.g. – interferons – interlukins – etc.

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530350, 530402, 530403, 530404, 530405, 530406, 530408, 530409, 530410, 6048901, 6048911, 514 2, 514 8, 514 12, 514 21, 424422, 424443, 424464, 424 851, 424 852, C07K 1300, C07K 1700, A61K 952

Patent

active

049315447

ABSTRACT:
A pharmaceutical composition is prepared wherein biologically active conjugated interleukin-2 is dissolved in an aqueous carrier medium without the presence of a solubilizing agent. The unconjugated IL-2, which is not water soluble or not readily soluble in water at pH 6-8 without such solubilizing agent, is selectively conjugated to one or more succinyl groups by reaction with succinic anhydride.

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