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    • 4. 发明申请
    • MODIFIED VACCINIA ANKARA EXPRESSING P53 IN CANCER IMMUNOTHERAPY
    • 表达P53的癌基因表达载体在癌症免疫治疗中的表达
    • WO2004058801A3
    • 2004-11-11
    • PCT/US0341053
    • 2003-12-22
    • HOPE CITYELLENHORN JOSHUA D IDIAMOND DON J
    • ELLENHORN JOSHUA D IDIAMOND DON J
    • A61K39/12A61K48/00C07K20060101C07K14/47C12N7/00C12N15/00C12N15/86C12N15/863
    • C12N15/86A61K2039/5156A61K2039/55516A61K2039/55561A61K2039/57C07K14/4746C12N2710/24143Y10S435/81
    • Mutations to the tumor suppressor protein p53 have been observed in 40-60% of all human cancers. These mutations are often associated with high nuclear and cytoplasmic concentrations of p53. Since many tumors exhibit highly elevated p53 levels, the protein is an attractive target for cancer immunotherapy. Unfortunately, p53 is an autoantigen that is likely to be tolerated as a self-protein by the immune system. The present invention is based on the discovery that this self-tolerance can be overcome by administration of recombinant modified vaccinia Ankara (MVA) containing a nucleic acid that encodes p53 (rMVAp53). The invention discloses a method of generating a p53-specific CTL response to tumor cells expressing mutated p53 by administering a composition comprising rMVAp53. Administration of rMVAp53 decreases tumor development, tumor growth, and mortality in a variety of malignant cell types. These effects are enhanced by administration of CTLA-4 blocker and/or CpG oligodeoxynucleotide immunomodulators.
    • 在所有人类癌症的40-60%中已观察到肿瘤抑制蛋白p53的突变。 这些突变通常与p53的高核浓度和细胞质浓度有关。 由于许多肿瘤表现出高水平的p53水平,该蛋白质是癌症免疫治疗的有吸引力的靶标。 不幸的是,p53是一种自身抗原,可能被免疫系统作为自身蛋白质耐受。 本发明基于这样的发现,即通过施用含有编码p53(rMVAp53)的核酸的重组修饰的安卡拉痘苗病毒(MVA)可以克服这种自身耐受性。 本发明公开了通过施用包含rMVAp53的组合物产生对表达突变p53的肿瘤细胞的p53特异性CTL应答的方法。 rMVAp53的施用减少了多种恶性细胞类型中的肿瘤发展,肿瘤生长和死亡率。 通过施用CTLA-4阻断剂和/或CpG寡脱氧核苷酸免疫调节剂可增强这些作用。
    • 6. 发明申请
    • MODIFIED VACCINIA ANKARA EXPRESSING P53 IN CANCER IMMUNOTHERAPY
    • 癌症免疫组织化学显示P53修饰的疫苗
    • WO2004058801A2
    • 2004-07-15
    • PCT/US2003/041053
    • 2003-12-22
    • CITY OF HOPEELLENHORN, Joshua, D., I.DIAMOND, Don, J.
    • ELLENHORN, Joshua, D., I.DIAMOND, Don, J.
    • C07K
    • C12N15/86A61K2039/5156A61K2039/55516A61K2039/55561A61K2039/57C07K14/4746C12N2710/24143Y10S435/81
    • Mutations to the tumor suppressor protein p53 have been observed in 40-60% of all human cancers. These mutations are often associated with high nuclear and cytoplasmic concentrations of p53. Since many tumors exhibit highly elevated p53 levels, the protein is an attractive target for cancer immunotherapy. Unfortunately, p53 is an autoantigen that is likely to be tolerated as a self-protein by the immune system. The present invention is based on the discovery that this self-tolerance can be overcome by administration of recombinant modified vaccinia Ankara (MVA) containing a nucleic acid that encodes p53 (rMVAp53). The invention discloses a method of generating a p53-specific CTL response to tumor cells expressing mutated p53 by administering a composition comprising rMVAp53. Administration of rMVAp53 decreases tumor development, tumor growth, and mortality in a variety of malignant cell types. These effects are enhanced by administration of CTLA-4 blocker and/or CpG oligodeoxynucleotide immunomodulators.
    • 已经在40-60%的人类癌症中观察到肿瘤抑制蛋白p53的突变。 这些突变通常与p53的高核和细胞质浓度相关。 由于许多肿瘤表现出高度升高的p53水平,蛋白质是癌症免疫治疗的有吸引力的靶标。 不幸的是,p53是一种自身抗原,可能被免疫系统的自身蛋白所耐受。 本发明基于这样的发现:通过施用含有编码p53(rMVAp53)的核酸的重组修饰的痘苗安卡拉(MVA)可以克服这种自身耐受性。 本发明公开了通过施用包含rMVAp53的组合物来产生对表达突变的p53的肿瘤细胞的p53特异性CTL应答的方法。 rMVAp53的给药减少了各种恶性细胞类型的肿瘤发展,肿瘤生长和死亡率。 通过施用CTLA-4阻断剂和/或CpG寡脱氧核苷酸免疫调节剂来增强这些作用。