Binding proteins, including antibodies, antibody derivatives...

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/13 (2006.01) A61K 39/395 (2006.01) C07K 16/28 (2006.01) C12N 15/63 (2006.01)

Patent

CA 2681530

This invention provides binding proteins, including antibodies, antibody derivatives and antibody fragments, that specifically bind a CD154 (CD40L) protein. This invention also provides a chimeric, humanized or fully human antibody, antibody derivative or antibody fragment that specifically binds to an epitope to which a humanized Fab fragment comprising a variable heavy chain sequence according to SEQ ID NO: 1 and comprising a variable light chain sequence according to SEQ ID NO: 2 specifically binds. CD154 binding proteins of this invention may elicit reduced effector function relative to a second anti-CD154 antibody. CD154 binding proteins of this invention are useful in diagnostic and therapeutic methods, such as in the treatment and prevention of diseases including those that involve undesirable immune responses that are mediated by CD154-CD40 interactions.

La présente invention concerne les protéines de liaison, incluant des anticorps, des dérivés d'anticorps et des fragments d'anticorps, qui se lient spécifiquement à une protéine CD154 (CD40L). Cette invention concerne en outre un anticorps, dérivé d'anticorps ou fragment d'anticorps chimérique, humanisé ou totalement humain, qui se lie spécifiquement à un épitope auquel un fragment Fab humanisé comprenant une séquence de chaîne lourde variable selon la séquence SEQ ID n° 1 et comprenant une séquence de chaîne légère variable selon la séquence SEQ ID n° 2 se lie spécifiquement. Les protéines se liant à CD154 de cette invention peuvent provoquer une fonction d'effecteur réduite par rapport à un second anticorps anti-CD154. Les protéines se liant à CD154 de cette invention sont utiles dans des procédés thérapeutiques et de diagnostic, tels que pour le traitement et la prévention de maladies incluant celles qui impliquent des réponses immunitaires indésirables qui sont médiées par les interactions CD154-CD40.

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