AGONISTIC ANTIBODY DIRECTED AGAINST HUMAN THROMBOPOIETIN RECEPTOR
    5.
    发明公开
    AGONISTIC ANTIBODY DIRECTED AGAINST HUMAN THROMBOPOIETIN RECEPTOR 审中-公开
    GEGEN MENSCHLICHEN THROMBOPOETIN-REZEPTOR GERICHTETER AGONISTISCHERANTIKÖRPER

    公开(公告)号:EP2006380A1

    公开(公告)日:2008-12-24

    申请号:EP07739974.9

    申请日:2007-03-20

    摘要: This invention provides an agonist antibody to a human thrombopoietin receptor (alias: human c-Mpl). More particularly, this invention provides an agonist antibody to a human thrombopoietin receptor, wherein the agonist antibody comprises: antibody constant regions comprising (1) amino acid sequences in a heavy chain constant region and a light chain constant region of a human antibody, (2) an amino acid sequence of a heavy chain constant region with a domain substituted between human antibody subclasses, and an amino acid sequence of a light chain constant region of a human antibody, or (3) amino acid sequences comprising a deletion(s), substitution(s), addition(s), or insertion(s) of one or several amino acid residues in the amino acid sequences of (1) or (2) above ; and antibody variable regions capable of binding to and activating a human thrombopoietin receptor; and wherein the agonist antibody has the properties: (a) that the antibody induces colony formation at a concentration of 10,000 ng/ml or lower as determined by the CFU-MK colony formation assay using human umbilical-cord-blood-derived CD34+ cells; and (b) that the antibody has a maximal activity at least 50% higher than that of PEG-rHuMGDF and an 50% effective concentration (EC50) of 100 nM or less in the cell proliferation assay using UT7/TPO cell. Also provided is a pharmaceutical composition for treating thrombocytopenia comprising said antibody.

    摘要翻译: 本发明提供了对人血小板生成素受体(别名:人c-Mpl)的激动剂抗体。 更具体地说,本发明提供对人血小板生成素受体的激动剂抗体,其中所述激动剂抗体包含:抗体恒定区,其包含(1)重链恒定区中的氨基酸序列和人抗体的轻链恒定区,(2 )具有在人抗体亚类和人抗体的轻链恒定区的氨基酸序列之间取代的结构域的重链恒定区的氨基酸序列,或(3)包含缺失的氨基酸序列, 上述(1)或(2)的氨基酸序列中一个或几个氨基酸残基的取代,添加或插入; 和能够结合并激活人类血小板生成素受体的抗体可变区; 并且其中所述激动剂抗体具有以下性质:(a)所述抗体通过使用人脐带血衍生的CD34 +细胞的CFU-MK集落形成测定法测定,浓度为10,000ng / ml或更低的浓度形成; 和(b)在使用UT7 / TPO细胞的细胞增殖测定中,抗体具有比PEG-rHuMGDF高至少50%的最大活性和100nM或更低的50%有效浓度(EC 50)。 还提供了用于治疗血小板减少症的药物组合物,其包含所述抗体。

    MATURE DENDRITIC CELL COMPOSITIONS AND METHODS FOR CULTURING SAME
    6.
    发明公开
    MATURE DENDRITIC CELL COMPOSITIONS AND METHODS FOR CULTURING SAME 有权
    与轮胎树突状细胞和培养方法组合物

    公开(公告)号:EP2003969A2

    公开(公告)日:2008-12-24

    申请号:EP07755113.3

    申请日:2007-04-06

    摘要: This invention provides novel CD40L polypeptides and nucleic acids, as well as antigen presenting cells and vaccines comprising such CD40L polypeptides and/or nucleic acids, and related methods for preparing the antigen presenting cells and vaccines. The antigen presenting cells and vaccines are useful for enhancing an immune response. The invention provides a method for preparing mature dendritic cells (DCs), comprising the sequential steps of: (a) signaling isolated immature dendritic cells (iDCs) with a first signal comprising an interferon gamma receptor (IFN-?R) agonist and/or a tumor necrosis factor alpha receptor (TNF-?R) agonist to produce signaled dendritic cells; and (b) signaling said signaled dendritic cells with a second transient signal comprising an effective amount of a CD40 agonist to produce CCR7+ mature dendritic cells. Also provided by this invention are enriched populations of dendritic cells prepared by the methods of the invention. Such dendritic cells have enhanced immunostimulatory properties and increased IL-12 secretion and/or decreased IL-10 secretion. CD40 signaling can be initiated by one or more of polypeptide translated from an exogenous polynucleotide encoding CD40L (e.g., mRNA or DNA), an agonistic antibody to CD40 receptor or by CD40 ligand polypeptide. The enriched populations can be further modified by the administration of an immunogen to the DC. The DC will take up and process the immunogen on its cell surface.