Abstract:
anticorpo c?mx-específico ou fragmento de ligação ao antígeno, uso dos mesmos e uso de imunogênicos. a invenção está relacionada à geração e utilidade de anticorpos que podem eficazmente se ligar ao domínio c?mx em ige ligado a membrana (mlge) expressos na superfície de linfócitos b humanos. o domínio c?mx de 52 resíduos de aminoácidos, localizado entre o domínio ch4 e o peptídeo de ancoragem de membrana c-terminal na cadeia epsiion ligada à membrana humana. foi sugerido como um sítio antigênico para alvo imunológico de células b expressando mige. anticorpos monoclonais anteriormente reportados, incluindo a20, que se liga ao peptídeo radwpgpp no c-terminal de c?mx, foram verificados que se ligam fracamente a mige em células b humanas. os presentes inventores verificaram agora que apenas anticorpos monoclonais específicos para certos segmentos, tais como glaggsaqsqrapdrvl e hsgqqqglpraaggsvphprde c?mx podem se ligar eficazmente a mige sobre as células b humanas e, portanto, terem utilidade para atingir aquelas células b para o tratamento de doenças mediadas por ige.
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.
Abstract:
Un anticuerpo específico para CεmX o un fragmento del mismo, que es capaz de unirse a IgE unida a la membrana sobre linfocitos B humanos e incapaz de unirse al péptido RADWPGPP, en donde el anticuerpo o el fragmento del mismo se une a GLAGGSAQSQRAPDRVL (SEQ ID Nº: 2).
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.
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。