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    • 75. 发明申请
    • ENHANCING THE T-CELLS STIMULATORY CAPACITY OF HUMAN ANTIGEN PRESENTING CELLS AND THEIR USE IN VACCINATION
    • 增强人类抗原呈递细胞的T细胞刺激能力及其在疫苗中的使用
    • WO2009034172A1
    • 2009-03-19
    • PCT/EP2008/062174
    • 2008-09-12
    • VRIJE UNIVERSITEIT BRUSSELTHIELEMANS, Kris, Maria, MagdalenaBONEHILL, Aude
    • THIELEMANS, Kris, Maria, MagdalenaBONEHILL, Aude
    • C12N5/06C12N5/08
    • C12N5/0639C12N2501/22C12N2501/23C12N2501/52C12N2501/599Y02A50/386Y02A50/403Y02A50/407Y02A50/484
    • With the current invention, we provide new methods of enhancing the T-cell stimulatory capacity of human dendritic cells (DCs) and their use in cancer vaccination. The method comprises the introduction of different molecular adjuvants to human DCs through transfection with at least two mRNA or DNA molecules encoding markers selected from the group of: CD40L, CD70, constitutively active TLR4 (caTLR4), IL-12p70, EL-selectin, CCR7 and/or 4-1 BBL; or in combination with inhibition of SOCS, A20, PD-L1 and/or STAT3 expression, for example through siRNA transfection. We could show a clear increase in the immunostimulatory capacity of DCs obtained in this way, enabling them to elicit an unexpectedly high T-cell immune response in vitro. Introduction of at least two of the above molecules, in combination with a tumor-specific antigen enables the DCs to elicit a significant host-mediated T-cell immune response in vivo against the tumor antigen and thus makes them very attractive in the manufacturing of anti-cancer vaccines.
    • 利用本发明,我们提供增强人树突状细胞(DC)的T细胞刺激能力及其在癌症疫苗接种中的应用的新方法。 该方法包括通过用编码选自以下组的标记的标记的至少两个mRNA或DNA分子进行转染而引入不同的分子佐剂:DC40,CD70,组成型活性TLR4(caTLR4),IL-12p70,EL-选择素,CCR7 和/或4-1BBL; 或与SOCS,A20,PD-L1和/或STAT3表达的抑制的组合,例如通过siRNA转染。 我们可以显示出以这种方式获得的DC的免疫刺激能力的明显增加,使得它们能够在体外引起意想不到的高T细胞免疫应答。 引入至少两种上述分子与肿瘤特异性抗原结合使得DC能够在体内引起显着的宿主介导的T细胞免疫反应,抵抗肿瘤抗原,因此使得它们在制备抗体中非常有吸引力 - 癌症疫苗。
    • 77. 发明申请
    • MATURE DENDRITIC CELL COMPOSITIONS AND METHODS FOR CULTURING SAME
    • 成熟的细胞组合物及其培养方法
    • WO2007117682A3
    • 2008-10-16
    • PCT/US2007008734
    • 2007-04-06
    • ARGOS THERAPEUTICS INCKIRIN PHARMA KKHEALEY DONALDTCHEREPANOVA IRINAHINOHARA ATSUSHIADAMS MELISSADEBENEDETTE MARK
    • HEALEY DONALDTCHEREPANOVA IRINAHINOHARA ATSUSHIADAMS MELISSADEBENEDETTE MARK
    • A01N43/04A01N63/00A01N65/00A61K38/00C12N5/00C12N5/0784C12N15/00
    • C12N5/0639A61K2039/5154A61K2039/5156A61K2039/5158C12N2501/24C12N2501/52C12N2510/00
    • 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.
    • 本发明提供了新的CD40L多肽和核酸,以及包含这种CD40L多肽和/或核酸的抗原呈递细胞和疫苗,以及用于制备抗原呈递细胞和疫苗的相关方法。 抗原呈递细胞和疫苗可用于增强免疫应答。 本发明提供了一种制备成熟树突状细胞(DCs)的方法,其包括以下顺序步骤:(a)用包含干扰素γ受体(IFN-αR)激动剂和/或细胞的第一信号将分离的未成熟树突状细胞(iDC) 肿瘤坏死因子α受体(TNF-αR)激动剂产生信号传导的树突状细胞; 和(b)用包含有效量的CD40激动剂的第二瞬时信号发信号通知所述信号传导的树突状细胞以产生CCR7 +成熟树突状细胞。 本发明还提供了通过本发明的方法制备的富含树枝状细胞的群体。 这种树突细胞具有增强的免疫刺激性能和增加的IL-12分泌和/或降低的IL-10分泌。 可以由编码CD40L的外源多核苷酸(例如mRNA或DNA),CD40受体的激动性抗体或CD40配体多肽翻译的一种或多种多肽来启动CD40信号传导。 可以通过向DC施用免疫原来进一步修饰富集的群体。 DC将占据并处理细胞表面的免疫原。