ANTI-EPHA4 ANTIBODY

[Problem] To provide an anti-EphA4 antibody or an EphA4-binding fragment thereof that is capable of binding to EphA4 and inhibiting the binding of EphA4 and the ligands thereof, and a pharmaceutical composition containing these as an active ingredient. [Solution] A mouse anti-EphA4 antibody having b...

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Main Authors NAKATANI, Aki, ONO, Yuichi, IMAI, Toshio, TAGUCHI, Ryota, INOUE, Eiji, YAMADA , Akio, ITO, Shunsuke, HIRAYAMA, Toshifumi
Format Patent
LanguageEnglish
French
Japanese
Published 16.03.2017
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Summary:[Problem] To provide an anti-EphA4 antibody or an EphA4-binding fragment thereof that is capable of binding to EphA4 and inhibiting the binding of EphA4 and the ligands thereof, and a pharmaceutical composition containing these as an active ingredient. [Solution] A mouse anti-EphA4 antibody having binding affinity for EphA4 was acquired, and the sequence of the complementarity-determining region (CDR) of the mouse anti-EphA4 antibody was identified. This made it possible to produce a humanized antibody including the CDR sequence of the mouse anti-EphA4 antibody in the variable regions of the heavy and light chains. Le problème décrit par la présente invention est de fournir un anticorps anti-EphA4 ou un fragment de celui-ci se liant à l'EphA4 qui est susceptible de se lier à l'EphA4 et d'inhiber la liaison de l'EphA4 et des ligands de celui-ci, et une composition pharmaceutique contenant ceux-ci utilisés comme principes actifs. La solution selon l'invention porte sur l'acquisition d'un anticorps anti-EphA4 de souris présentant une affinité de liaison pour l'EphA4, et l'identification de la séquence de la région déterminant la complémentarité (CDR) de l'anticorps anti-EphA4 de souris. Ceci permet de produire un anticorps humanisé comprenant la séquence de la CDR de l'anticorps anti-EphA4 de souris dans les régions variables des chaînes lourdes et légères. 【課題】 EphA4に結合し、EphA4とそのリガンドとの結合を阻害し得る、抗EphA4抗体またはそのEphA4結合断片、および、これらを有効成分として含む医薬組成物を提供する。 【解決手段】 EphA4に対して結合親和性を有する、マウス抗EphA4抗体を取得し、当該マウス抗EphA4抗体の相補性決定領域(CDR)の配列を特定した。これにより、重鎖および軽鎖の可変領域に前記マウス抗EphA4抗体のCDR配列を含むヒト化抗体の作製を可能となった。
Bibliography:Application Number: WO2016JP76102