Mutated anti-cd22 antibodies with increased affinity to cd22-expressing leukemia cells
    4.
    发明申请
    Mutated anti-cd22 antibodies with increased affinity to cd22-expressing leukemia cells 有权
    突变的抗cd22抗体与对表达CD22的白血病细胞的亲和性增加

    公开(公告)号:US20050118182A1

    公开(公告)日:2005-06-02

    申请号:US10490535

    申请日:2002-09-25

    摘要: Recombinant immunotoxins are fusion proteins composed of the Fv domains of antibodies fused to bacterial or plant toxins. RFB4 (Fv)-PE38 is an immunotoxin that targets CD22 expressed on B cells and B cell malignancies. The present invention provides antibodies and antibody fragments that have improved ability to bind the CD22 antigen of B cells and B cell malignancies compared to RFB4. Immunotoxins made with the antibodies and antibody fragments of the invention have improved cytotoxicity to CD22-expressing cancer cells. Compositions that incorporate these antibodies into chimeric immunotoxin molecules that can be used in medicaments and methods for inhibiting the growth and proliferation of leukemia and lymphoma cells.

    摘要翻译: 重组免疫毒素是由与细菌或植物毒素融合的抗体的Fv结构域组成的融合蛋白。 RFB4(Fv)-PE38是靶向在B细胞和B细胞恶性肿瘤上表达的CD22的免疫毒素。 与RFB4相比,本发明提供了具有改善的结合B细胞和B细胞恶性肿瘤的CD22抗原的能力的抗体和抗体片段。 用本发明的抗体和抗体片段制备的免疫毒素对表达CD22的癌细胞具有改善的细胞毒性。 将这些抗体并入可用于药物的嵌合免疫毒素分子中的组合物和用于抑制白血病和淋巴瘤细胞生长和增殖的方法。

    Mutated anti-CD22 antibodies with increased affinity to CD22-expressing leukemia cells
    5.
    发明授权
    Mutated anti-CD22 antibodies with increased affinity to CD22-expressing leukemia cells 有权
    突变的抗CD22抗体对表达CD22的白血病细胞的亲和力增加

    公开(公告)号:US08809502B2

    公开(公告)日:2014-08-19

    申请号:US13438725

    申请日:2012-04-03

    IPC分类号: A61K39/00

    摘要: Recombinant immunotoxins are fusion proteins composed of the Fv domains of antibodies fused to bacterial or plant toxins. RFB4 (Fv)-PE38 is an immunotoxin that targets CD22 expressed on B cells and B cell malignancies. The present invention provides antibodies and antibody fragments that have improved ability to bind the CD22 antigen of B cells and B cell malignancies compared to RFB4. Immunotoxins made with the antibodies and antibody fragments of the invention have improved cytotoxicity to CD22-expressing cancer cells. Compositions that incorporate these antibodies into chimeric immunotoxin molecules that can be used in medicaments and methods for inhibiting the growth and proliferation of leukemia and lymphoma cells.

    摘要翻译: 重组免疫毒素是由与细菌或植物毒素融合的抗体的Fv结构域组成的融合蛋白。 RFB4(Fv)-PE38是靶向在B细胞和B细胞恶性肿瘤上表达的CD22的免疫毒素。 与RFB4相比,本发明提供了具有改善的结合B细胞和B细胞恶性肿瘤的CD22抗原的能力的抗体和抗体片段。 用本发明的抗体和抗体片段制备的免疫毒素对表达CD22的癌细胞具有改善的细胞毒性。 将这些抗体并入可用于药物的嵌合免疫毒素分子中的组合物和用于抑制白血病和淋巴瘤细胞生长和增殖的方法。