Details for Patent: 8,257,699

Title:	Soluble glycosaminoglycanases and methods of preparing and using soluble glycosaminoglycanases
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.
Inventor(s):	Bookbinder; Louis H. (San Diego, CA), Kundu; Anirban (San Diego, CA), Frost; Gregory I. (Del Mar, CA)
Assignee:	Halozyme, Inc. (San Diego, CA)
Filing Date:	Dec 15, 2011
Application Number:	13/374,248
Claims:	1. A pharmaceutical composition, comprising a soluble neutral active human hyaluronidase glycoprotein (sHASEGP); and an Alpha 1-proteinase inhibitor, wherein: the hyaluronidase glycoprotein is a neutral active soluble hyaluronidase polypeptide (sHASEGP) containing at least one N-linked sugar moiety that is covalently attached to an asparagine residue of the polypeptide; the hyaluronidase polypeptide does not comprise the complete sequence of amino acids set forth in SEQ ID NO:1; and the hyaluronidase polypeptide consists of: a) a sequence of amino acid residues contained within SEQ ID NO:1 that includes at least amino acids 36-464 of SEQ ID NO:1, wherein the polypeptide is truncated within the C-terminus of SEQ ID NO:1 at a C-terminal amino acid residue selected from among 467, 477, 478, 479, 480, 481, 482, 483 and 494 of SEQ ID NO:1; or b) a sequence of amino acid residues that has at least 91% amino acid sequence identity with a sequence of amino acids set forth in a). 2. The pharmaceutical composition of claim 1, wherein the hyaluronidase glycoprotein is selected from: a hyaluronidase protein that has a C-terminal amino acid residue selected from among 477, 478, 479, 480, 481, 482, 483 and 494 of SEQ ID NO:1; and a hyaluronidase protein that has at least 97% amino acid sequence identity with a sequence of amino acids set forth in a). 3. The pharmaceutical composition of claim 1, wherein : (i) the hyaluronidase glycoprotein consists of the sequence of amino acids set forth as amino acids 36-477, 36-478, 36-479, 36-480, 36-481, 36-482, or 36-483 of SEQ ID NO:1; or (ii) the hyaluronidase glycoprotein contains amino acid substitutions in the sequence of amino acids set forth as amino acids 36-477, 36-478, 36-479, 36-480, 36-481, 36-482, or 36-483 of SEQ ID NO:1, whereby the amino acid-substituted hyaluronidase glycoprotein consists of a sequence of amino acids that has at least 95% amino acid sequence identity with the sequence of amino acids set forth as amino acids 36-477, 36-478, 36-479, 36-480, 36-481, 36-482, or 36-483 of SEQ ID NO:1. 4. The pharmaceutical composition of claim 1, wherein the hyaluronidase glycoprotein is expressed and secreted from mammalian cells. 5. The pharmaceutical composition of claim 4, wherein the mammalian cells are Chinese Hamster Ovary (CHO) cells. 6. The pharmaceutical composition of claim 1, wherein the hyaluronidase glycoprotein is modified with a polymer. 7. The pharmaceutical composition of claim 6, wherein the polymer is PEG or dextran. 8. The pharmaceutical composition of claim 1, that is formulated for subcutaneous administration. 9. The pharmaceutical composition of claim 1, wherein the hyaluronidase glycoprotein has a C-terminal amino acid residue selected from among 477, 478, 479, 480, 481, 482, 483 and 494 of SEQ ID NO:1. 10. The composition of claim 1, wherein in b) the hyaluronidase polypeptide has at least 95% sequence identity. 11. A combination, comprising: a) a first composition comprising a soluble neutral active human hyaluronidase glycoprotein (sHASEGP), wherein: the hyaluronidase glycoprotein is a neutral active soluble hyaluronidase polypeptide (sHASEGP) containing at least one N-linked sugar moiety that is covalently attached to an asparagine residue of the polypeptide; the hyaluronidase polypeptide does not comprise the complete sequence of amino acids set forth in SEQ ID NO:1; and the hyaluronidase polypeptide consists of: (i) a sequence of amino acid residues contained within SEQ ID NO:1 that includes at least amino acids 36-464 of SEQ ID NO:1, wherein the polypeptide is truncated within the C-terminus of SEQ ID NO:1 at a C-terminal amino acid residue selected from among 467, 477, 478, 479, 480, 481, 482, 483 and 494 of SEQ ID NO:1; or (ii) a sequence of amino acid residues that has at least 91% amino acid sequence identity with a sequence of amino acids set forth in (i); and b) a second composition, comprising an Alpha 1-proteinase inhibitor. 12. The combination of claim 11, wherein the hyaluronidase glycoprotein has a C-terminal amino acid residue selected from among 477, 478, 479, 480, 481, 482 and 483 of SEQ ID NO:1. 13. The combination of claim 11, wherein: (i) the hyaluronidase glycoprotein consists of the sequence of amino acids set forth as amino acids 36-477, 36-478, 36-479, 36-480, 36-481, 36-482, or 36-483 of SEQ ID NO:1; or (ii) the hyaluronidase glycoprotein contains amino acid substitutions in the sequence of amino acids set forth as amino acids 36-477, 36-478, 36-479, 36-480, 36-481, 36-482, or 36-483 of SEQ ID NO:1, whereby the amino acid-substituted hyaluronidase glycoprotein consists of a sequence of amino acids that has at least 95% amino acid sequence identity with the sequence of amino acids set forth as amino acids 36-477, 36-478, 36-479, 36-480, 36-481, 36-482, or 36-483 of SEQ ID NO:1. 14. The combination of claim 11, wherein the hyaluronidase glycoprotein is expressed and secreted from mammalian cells. 15. The combination of claim 14, wherein the mammalian cells are Chinese Hamster Ovary (CHO) cells. 16. The combination of claim 11, wherein the hyaluronidase glycoprotein is modified with a polymer. 17. The combination of claim 16, wherein the polymer is PEG or dextran. 18. The combination of claim 11, wherein the first and second composition are formulated for subcutaneous administration. 19. The combination of claim 11, wherein each of the pharmaceutical compositions is formulated for subcutaneous administration. 20. The combination of claim 11, wherein the hyaluronidase glycoprotein has a C-terminal amino acid residue selected from among 477, 478, 479, 480, 481, 482, 483 and 494 of SEQ ID NO:1. 21. The composition of claim 1, wherein in b) the hyaluronidase polypeptide has at least 97% sequence identity. 22. The combination of claim 11, wherein in b) the hyaluronidase polypeptide has at least 95% sequence identity. 23. The combination of claim 11, wherein in b) the hyaluronidase polypeptide has at least 97% sequence identity.