Compositions monovalent for cd40l binding and methods of use

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 16/28 (2006.01) A61K 39/395 (2006.01) A61P 37/06 (2006.01)

Patent

CA 2581017

The invention relates to antibody polypeptides that monovalently bind CD40L. Antibody polypeptides that are monovalent for binding of CD40L can inhibit CD40L activity while avoiding potential undesirable effects that can occur with antibodies capable of divalent or multivalent binding of CD40L. In one aspect, a monovalent anti-CD40L antibody polypeptide consists of or comprises a single immunoglobulin variable domain that specifically binds and antagonizes the activity of CD40L, preferably without substantially agonizing CD40 and/or CD40L activity. In another aspect, the monovalent anti-CD40L antibody polypeptide is a human antibody polypeptide. The invention further encompasses methods of antagonizing CD40/CD40L interactions in an individual and methods of treating diseases or disorders involving CD40/CD40L interactions, the methods involving administering a monovalent anti-CD40L antibody polypeptide to the individual.

La présente invention a trait à des polypeptides d'anticorps de liaison monovalente au CD40L. Des polypeptides d'anticorps qui sont monovalents pour la liaison au CD40L peuvent inhiber l'activité de CD40L tout en évitant des effets indésirables potentiels qui peuvent se produire avec des anticorps capables de liaison divalente ou multivalente au CD40L. Dans un mode de réalisation, un polypeptide d'anticorps anti-CD40L monovalent est constitué de ou comprend un unique domaine variable d'immunoglobulines de liaison spécifique et d'antagonisme à l'activité de CD40L, de préférence sans présenter sensiblement d'effet agoniste au CD40L et/ou à l'activité de CD40L. Dans un autre mode de réalisation, le polypeptide d'anticorps anti-CD40L est un polypeptide d'anticorps humain. L'invention a également trait à des procédés d'antagonisation d'interactions CD40/CD40L chez un individu et à des procédés de traitement de maladies ou de troubles impliquant des interactions CD40/CD40L, les procédés comprenant l'administration d'un polypeptide d'anticorps anti-CD40L monovalent à un sujet.

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