Drug – bio-affecting and body treating compositions – Enzyme or coenzyme containing – Hydrolases
Reexamination Certificate
2010-03-04
2010-12-07
Nashed, Nashaat T (Department: 1656)
Drug, bio-affecting and body treating compositions
Enzyme or coenzyme containing
Hydrolases
C435S201000, C514S003100, C514S004300
Reexamination Certificate
active
07846431
ABSTRACT:
The invention relates to the discovery of novel soluble neutral active Hyaluronidase Glycoproteins (sHASEGPs), methods of manufacture, and their use to facilitate administration of other molecules or to alleviate glycosaminoglycan associated pathologies. Minimally active polypeptide domains of the soluble, neutral active sHASEGP domains are described that include asparagine-linked sugar moieties required for a functional neutral active hyaluronidase domain. Included are modified amino-terminal leader peptides that enhance secretion of sHASEGP. The invention further comprises sialated and pegylated form of a recombinant sHASEGP to enhance stability and serum pharmacokinetics over naturally occurring slaughterhouse enzymes. Further described are suitable formulations of a substantially purified recombinant sHASEGP glycoprotein derived from a eukaryotic cell that generate the proper glycosylation required for its optimal activity.
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Bookbinder Louis
Frost Gregory I.
Kundu Anirban
Halozyme, Inc.
K & L Gates LLP
Nashed Nashaat T
Seidman Stephanie
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