HUMANIZED ANTI-IGE ANTIBODIES THAT CROSSLINK CD23 ON B LYMPHOCYTES BUT DO NOT SENSITIZE MAST CELLS

    公开(公告)号:CA2943588C

    公开(公告)日:2019-04-30

    申请号:CA2943588

    申请日:2015-06-16

    Abstract: A novel humanized anti-IgE antibody is disclosed. The antibody is capable of binding to free IgE, membrane-bound IgE on B lymphocytes, IgE bound by CD23, but not to IgE bound by high-affinity IgE.Fc receptor on mast cells. The present invention relates to the treatment of IgE-mediated diseases, including allergic asthma, allergic rhinitis, atopic dermatitis, food allergy, chronic spontaneous (idiopathic) urticaria, chronic rhinosinusitis, systemic mastocytosis, cutaneous mastocytosis, allergic bronchopulmonary aspergillosis, recurrent idiopathic angioedema, and eosinophil-associated gastrointestinal disorder by administering the anti-IgE antibody of the present invention.

    Humanized anti-IgE antibodies that crosslink CD23 on B lymphocytes but do not sensitize mast cells

    公开(公告)号:AU2015277379B2

    公开(公告)日:2017-06-29

    申请号:AU2015277379

    申请日:2015-06-16

    Abstract: A novel humanized anti-IgE antibody is disclosed. The antibody is capable of binding to free IgE, membrane-bound IgE on B lymphocytes, IgE bound by CD23, but not to IgE bound by high-affinity IgE.Fc receptor on mast cells. The present invention relates to the treatment of IgE-mediated diseases, including allergic asthma, allergic rhinitis, atopic dermatitis, food allergy, chronic spontaneous (idiopathic) urticaria, chronic rhinosinusitis, systemic mastocytosis, cutaneous mastocytosis, allergic bronchopulmonary aspergillosis, recurrent idiopathic angioedema, and eosinophil-associated gastrointestinal disorder by administering the anti-IgE antibody of the present invention.

    ANTI-C mX ANTIBODIES CAPABLE OF BINDING TO HUMAN mIgE ON B LYMPHOCYTES
    19.
    发明公开
    ANTI-C mX ANTIBODIES CAPABLE OF BINDING TO HUMAN mIgE ON B LYMPHOCYTES 有权
    AN ICH E ON ON ON ON ON ER ER ER ER ER ER ER ER ER ER ER ER

    公开(公告)号:EP2401300A4

    公开(公告)日:2013-01-23

    申请号:EP10745796

    申请日:2010-02-25

    Abstract: The invention pertains to the generation and utility of antibodies that can bind effectively to CepsilonmX domain on membrane-bound IgE (mIgE) expressed on the surface of human B lymphocytes. The CepsilonmX domain of 52 amino acid residues, located between the CH4 domain and the C-terminal membrane-anchor peptide on human membrane-bound epsilon chain, had been suggested as an antigenic site for immunological targeting of B cells expressing mIgE. Previous reported monoclonal antibodies, including a20, which bind to RADWPGPP (SEQ ID NO:1) peptide at the C-terminal of CepsilonmX, have now been found to bind poorly to mIgE on human B cells. We have discovered that only monoclonal antibodies specific for certain segments, such as GLAGGSAQSQRAPDRVL (SEQ ID NO:2) and HSGQQQGLPRAAGGSVPHPR (SEQ ID NO:3), of CepsilonmX can bind effectively to mIgE on human B cells and hence have the utility for targeting those B cells for the treatment of diseases mediated by IgE.

    Abstract translation: 本发明涉及可在人B淋巴细胞表面表达的膜结合IgE(mIgE)上有效结合CepsilonmX结构域的抗体的产生和应用。 已经提出位于人膜结合的ε链上的CH4结构域和C末端膜锚定肽之间的52个氨基酸残基的Cepsilonm结构域作为用于免疫靶向表达mIgE的B细胞的抗原位点。 现在已经发现,先前报道的包含与CepsilonmX C末端的RADWPGPP(SEQ ID NO:1)肽结合的α20的单克隆抗体已经发现与人B细胞上的mIgE不良结合。 我们已经发现,只有对某些片段特异性的单克隆抗体,如GLEGGSAQSQRAPDRVL(SEQ ID NO:2)和HSGQQQGLPRAAGGSVPHPR(SEQ ID NO:3)),可以有效地结合人B细胞上的mIgE,因此具有靶向 用于治疗IgE介导的疾病的B细胞。

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