GLYCOSYLATION ENGINEERED ANTIBODY THERAPY

• US 20100173323A1
• Filed: 06/09/2007
• Published: 07/08/2010
• Est. Priority Date: 06/09/2006
• Status: Abandoned Application

• Current Assignee: University of Maryland Baltimore County (University of Maryland)
• Original Assignee: University of Maryland Baltimore County (University of Maryland)
• Inventors: Strome, Scott, Wang, Lai-Xi
• Application Number:
  US12/304,080
• Publication Number:
  US 20100173323A1
• Time in Patent Office: Days
• US Class Current: 435/7.100
• CPC Class Codes: A61K 2039/505 comprising antibodies
• CPC Class Codes: C07K 16/2863 against receptors for growth factors, growth regulators
• CPC Class Codes: C07K 2317/24 containing regions, domains or residues from different species, e.g. chimeric, humanized or veneered
• CPC Class Codes: C07K 2317/41 Glycosylation, sialylation, or fucosylation
• CPC Class Codes: C07K 2317/53 Hinge
• CPC Class Codes: C07K 2317/72 Increased effector function due to an Fc-modification
• CPC Class Codes: C07K 2317/732 Antibody-dependent cellular cytotoxicity [ADCC]

Abstract

The instant invention is drawn to methods of generating a glycosylation-engineered antibody, and using the glycosylation-engineered antibody for treating a patient, particularly a cancer patient or a patient with an immune disease or disorder. The instant invention is also drawn to methods of generating a glycosylation-engineered antibody for use in the treatment of patients having a polymorphism that does not respond to conventional antibody therapy. The instant invention is also drawn to methods of improving the biological activity of an antibody by glycosylation engineering. The instant invention is also drawn to methods of modulating antibody-dependent cell-mediated cytoxicity (ADCC) using a glycosylation-engineered antibody.

Claims

1. A method of producing an antibody having a desired glycosylation state comprising the steps of

a) removing one or more sugars,

b) chemically synthesizing a sugar, and

c) enzymatically attaching the chemically synthesized sugar to (i) the antibody or (ii) a sugar attached to the antibody.

2. The method of claim 1, wherein the chemically synthesized sugar comprises an oxazoline ring.

3. The method of claim 1, wherein the enzyme is an endoglycosidase and the enzymatic attachment comprises a transglycosylation.

4. The method of claim 1, wherein the sugar removed is an asparagine linked sugar, the polypeptide retains an N-acetylglucosamine at the asparagine after step a) and the enzymatic attachment is to the N-acetylglucosamine.

5. The method of claim 1, wherein the antibody is a monoclonal antibody and the method results in substantially pure monoclonal antibody.

6. The method of claim 1, wherein the chemically synthesized sugar results in a non-natural carbohydrate structure after step c).

7. The method of claim 5, wherein the substantially pure monoclonal antibody comprises a glycosylation state capable of modulating a biological activity.

8. The method of claim 7, wherein the biological activity is (i) a binding affinity for an Fcg Receptor or (ii) antibody-dependent cell-mediated cytotoxicity.

9. The method of claim 5, wherein the monoclonal antibody comprises cetuximab, rituximab, muromonab-CD3, abciximab, daclizumab, basiliximab, palivizumab, infliximab, trastuzumab, gemtuzumab ozogamicin, alemtuzumab, ibritumomab tiuxetan, adalimumab, omalizumab, tositumomab, I-131 tositumomab, efalizumab, bevacizumab, panitumumab, pertuzumab, natalizumab, etanercept, IGN101, volociximab, Anti-CD80 mAb, Anti-CD23 mAb, CAT-3888, CDP-791, eraptuzumab, MDX-010, MDX-060, MDX-070, matuzumab, CP-675,206, CAL, SGN-30, zanolimumab, adecatumumab, oregovomab, nimotuzumab, ABT-874, denosumab, AM 108, AMG 714, fontolizumab, daclizumab, golimumab, CNTO 1275, ocrelizumab, HuMax-CD20, belimumab, epratuzumab, MLN1202, visilizumab, tocilizumab, ocrerlizumab, certolizumab pegol, eculizumab, pexelizumab, abciximab, ranibizimumab, mepolizumab, TNX-355, or MYO-029.

22. A method of creating a bioequivalent of a monoclonal antibody comprising the steps of

a) determining a glycosylation state for a pre-existing monoclonal antibody, and

b) using the method of claim 1 to produce a monoclonal antibody having substantially the same glycosylation state as the pre-existing monoclonal antibody.

25. A method of creating a substantially pure glycoform of a pre-existing monoclonal antibody having a heterogeneous glycosylation state comprising the steps of

a) using the method of claim 1 to create two or more of the glycoforms present in the pre-existing monoclonal antibody,

b) testing the two or more glycoforms for a biological activity or a toxicity to determine a preferred glycoform of the pre-existing monoclonal antibody having a higher biological activity or a lower toxicity, and

using the method of claim 1 to produce a monoclonal antibody glycoform having a substantially pure preferred glycosylation state identified in step b) as having a higher biological activity or a lower toxicity.

10. An antibody composition comprising antibodies having a substantially pure glycosylation state.

11. The antibody composition of claim 10, wherein the glycosylation state comprises at least four sugars.

12. The antibody composition of claim 10, wherein the antibody is a monoclonal antibody.

13. The antibody composition of claim 12, wherein the monoclonal antibody comprises cetuximab, rituximab, muromonab-CD3, abciximab, daclizumab, basiliximab, palivizumab, infliximab, trastuzumab, gemtuzumab ozogamicin, alemtuzumab, ibritumomab tiuxetan, adalimumab, omalizumab, tositumomab, I-131 tositumomab, efalizumab, bevacizumab, panitumumab, pertuzumab, natalizumab, etanercept, IGN101, volociximab, Anti-CD80 mAb, Anti-CD23 mAb, CAT-3888, CDP-791, eraptuzumab, MDX-010, MDX-060, MDX-070, matuzumab, CP-675,206, CAL, SGN-30, zanolimumab, adecatumumab, oregovomab, nimotuzumab, ABT-874, denosumab, AM 108, AMG 714, fontolizumab, daclizumab, golimumab, CNTO 1275, ocrelizumab, HuMax-CD20, belimumab, epratuzumab, MLN1202, visilizumab, tocilizumab, ocrerlizumab, certolizumab pegol, eculizumab, pexelizumab, abciximab, ranibizimumab, mepolizumab, TNX-355, or MYO-029.

14. A method of evaluating a biological activity of a glycopolypeptide comprising the steps of

a) producing a substantially pure population of glycopolypeptides having a selected glycosylation state, and

b) measuring the biological activity of the glycopolypeptide.

15. The method of claim 14, wherein the glycopolypeptide is an antibody and the biological activity is (i) a binding affinity for an Fcg Receptor or (ii) antibody-dependent cell-mediated cytotoxicity.

16. The method of claim 15, wherein the antibody comprises a monoclonal antibody.

17. The method of claim 15, wherein the biological activity is antibody-dependent cell-mediated cytotoxicity in vivo.

18. The method of claim 16, wherein the monoclonal antibody comprises cetuximab, rituximab, muromonab-CD3, abciximab, daclizumab, basiliximab, palivizumab, infliximab, trastuzumab, gemtuzumab ozogamicin, alemtuzumab, ibritumomab tiuxetan, adalimumab, omalizumab, tositumomab, I-131 tositumomab, efalizumab, bevacizumab, panitumumab, pertuzumab, natalizumab, etanercept, IGN101, volociximab, Anti-CD80 mAb, Anti-CD23 mAb, CAT-3888, CDP-791, eraptuzumab, MDX-010, MDX-060, MDX-070, matuzumab, CP-675,206, CAL, SGN-30, zanolimumab, adecatumumab, oregovomab, nimotuzumab, ABT-874, denosumab, AM 108, AMG 714, fontolizumab, daclizumab, golimumab, CNTO 1275, ocrelizumab, HuMax-CD20, belimumab, epratuzumab, MLN1202, visilizumab, tocilizumab, ocrerlizumab, certolizumab pegol, eculizumab, pexelizumab, abciximab, ranibizimumab, mepolizumab, TNX-355, or MYO-029.

19. A method of improving the outcome of an antibody based therapy comprising the steps of

a) determining for a subject an Fcg Receptor allele present in a subject, and

b) treating the subject with a monoclonal antibody comprising a substantially pure glycosylation state selected for (i) increased binding affinity to the Fcg Receptor allele present in the subject or (ii) increased antibody-dependent cell-mediated cytotoxicity.

20. The method of claim 19, wherein the Fcg Receptor allele is an FcgIIIa Receptor allele for amino acid 158 or an FcgIIa Receptor allele for amino acid 131.

21. A method of selecting the glycosylation state for a monoclonal antibody comprising the steps of

a) determining a Fcg Receptor allele on an immune cell, and

b) selecting a glycosylation state which modulates, relative to a source monoclonal antibody having a heterogeneous glycosylation state,

i) Antibody Dependent Cell Cytotoxicity,

ii) Complement Dependent Cytotoxicity,

iii) an Fc g receptor binding affinity, or

iv) a monoclonal antibody induced cell signaling event.

23. A method of selecting for clinical development a glycoform of a monoclonal antibody for use in a population having an Fcg receptor allele comprising the steps of

a) testing a glycoform of a monoclonal antibody for biological activity against the Fcg Receptor alleles present in the population, and

b) selecting for clinical development the monoclonal antibody glycoform capable of (i) increased binding affinity to the Fcg Receptor allele present in the population or (ii) increased antibody-dependent cell-mediated cytotoxicity.

24. The method of claim 23, wherein the Fcg Receptor allele is an FcgIIIa Receptor allele for amino acid 158 or an FcgIIa Receptor allele for amino acid 131.