ALTERATION OF THE CIRCULATING LIFE AND ANTIGENIC PROPERTIES OF BOVINE ADENOSINE-DEAMINASE IN MICE BY ATTACHMENT OF POLYETHYLENE-GLYCOL

  • 1 January 1981
    • journal article
    • research article
    • Vol. 46  (3) , 649-652
Abstract
Polyethylene glycol was attached covalently to adenosine deaminase (ADA) using cyanuric chloride as the coupling agent. The modified adenosine deaminase (PEG-ADA) appears to lose its immunogenicity in mice following multiple i.v. injections. PEG-ADA does not react with antibodies raised against native ADA. The circulating half-life (T1/2) of PEG-ADA was increased to 28 h. The lack of detectable antibody formation and long circulating life may make PEG-ADA suitable for treating human ADA deficiency.