ANTI-HLA-DQ2.5/8 ANTIBODY AND ITS USE FOR THE TREATMENT OF CELIAC DISEASE

The invention provides anti-HLA-DQ2.5/8 antibodies and methods of using the same. The antibodies of the present invention have binding activity to human HLA-DQ2.5/8 and monkey MHC-DQ, but substantially no binding activity to HLA-DR, HLA-DP, or a complex of the invariant chain (CD74) and HLA-DQ2.5/8....

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Bibliographic Details
Main Authors Takahashi, Noriyuki, Okura, Yuu
Format Patent
LanguageEnglish
Published 06.02.2020
Subjects
CHEMISTRY
HUMAN NECESSITIES
HYGIENE
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
MEDICAL OR VETERINARY SCIENCE
METALLURGY
ORGANIC CHEMISTRY
PEPTIDES
PHYSICS
SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS
TESTING
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Summary:The invention provides anti-HLA-DQ2.5/8 antibodies and methods of using the same. The antibodies of the present invention have binding activity to human HLA-DQ2.5/8 and monkey MHC-DQ, but substantially no binding activity to HLA-DR, HLA-DP, or a complex of the invariant chain (CD74) and HLA-DQ2.5/8. The antibodies bind to HLA-DQ2.5/8 in the presence of a gluten peptide such as gliadin, i.e., bind to HLA-DQ2.5/8 forming a complex with the gluten peptide. The antibodies have neutralizing activity against the binding between HLA-DQ2.5/8 and TCR, and thus block the interaction between HLA-DQ2.5/8 and an HLA-DQ2.5/8-restricted CD4+ T cell. The antibodies do not undergo rapid internalization mediated by the invariant chain. These characteristics are particularly useful for treating celiac disease. Thus, the present invention also provides a method of treating celiac disease using the antibodies of the present invention.
Bibliography:Application Number: US201816488336