TARGET CELL-SPECIFIC CYTOPLASM INVASION ANTIGEN-BINDING MOLECULE

To provide an antigen-binding molecule specifically delivered to a cytoplasm of a target cell.SOLUTION: The present invention relates to a cytoplasm invasion antigen-binding molecule containing a cell surface antigen-binding domain, a cytoplasm antigen-binding domain, and a cytoplasm invasion domain...

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Bibliographische Detailangaben
Hauptverfasser: SAVORY NASA, IGAWA TOMOYUKI, SHIMIZU SHUN, ADRIAN SHIONG WEI HO, ISHII SHINYA, SAKA KOICHIRO, SUZUKI TAKASHI, TERANISHI YURI, KATO KAZUKI
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide an antigen-binding molecule specifically delivered to a cytoplasm of a target cell.SOLUTION: The present invention relates to a cytoplasm invasion antigen-binding molecule containing a cell surface antigen-binding domain, a cytoplasm antigen-binding domain, and a cytoplasm invasion domain; a pharmaceutical composition including the antigen-binding molecule; a method for specifically delivering the antigen-binding molecule into a cytoplasm of a target cell; a method for specifically removing, suppressing or activating cytoplasm antigen in the target cell by using the antigen-binding molecule; and a pharmaceutical composition including the antigen-binding molecule for preventing or treating a disease in a patient. The present invention further relates to a cytoplasm invasion antigen-binding molecule containing a cytoplasm invasion domain and Fc region, where the Fc region includes one or more amino acid modifications that promote multimer formation of the cytoplasm invasion antigen-binding molecule.SELECTED DRAWING: Figure 7 【課題】標的細胞の細胞質に特異的に送達される抗原結合分子を提供する。【解決手段】本発明は、細胞表面抗原結合ドメイン、細胞質抗原結合ドメイン、及び細胞質侵入ドメインを含有する細胞質侵入抗原結合分子;当該抗原結合分子を含む医薬組成物;当該抗原結合分子を標的細胞の細胞質中に特異的に送達する方法;当該抗原結合分子を用いて標的細胞において特異的に細胞質抗原を除去、抑制、又は活性化する方法;ならびに当該抗原結合分子を含む、患者において疾患を予防又は治療するための医薬組成物に関する。本発明はまた、細胞質侵入ドメイン及びFc領域を含有する細胞質侵入抗原結合分子であって、当該Fc領域が、当該細胞質侵入抗原結合分子の多量体形成を促進する1又はそれ以上のアミノ酸改変を含む、細胞質侵入抗原結合分子にも関する。【選択図】図7