Dual Specific Immunotoxin for Brain Tumor Therapy
    1.
    发明申请
    Dual Specific Immunotoxin for Brain Tumor Therapy 审中-公开
    双重特异性免疫毒素用于脑肿瘤治疗

    公开(公告)号:US20090269343A1

    公开(公告)日:2009-10-29

    申请号:US12418975

    申请日:2009-04-06

    摘要: We tested the in vitro and in vivo efficacy of a recombinant bispecific immunotoxin that recognizes both EGFRwt and tumor-specific EGFRvIII receptors. A single chain antibody was cloned from a hybridoma and fused to toxin, carrying a C-terminal peptide which increases retention within cells. The binding affinity and specificity of the recombinant bispecific immunotoxin for the EGFRwt and the EGFRvIII proteins was measured. In vitro cytotoxicity was measured. In vivo activity of the recombinant bispecific immunotoxin was evaluated in subcutaneous models and compared to that of an established monospecific immunotoxin. In our preclinical studies, the bispecific recombinant immunotoxin, exhibited significant potential for treating brain tumors.

    摘要翻译: 我们测试了识别EGFR重组和肿瘤特异性EGFRvIII受体的重组双特异性免疫毒素的体外和体内功效。 从杂交瘤中克隆单链抗体并与毒素融合,携带增加细胞内保留的C-末端肽。 测量了重组双特异性免疫毒素对EGFRwt和EGFRvIII蛋白的结合亲和力和特异性。 测量体外细胞毒性。 在皮下模型中评估重组双特异性免疫毒素的体内活性,并与已建立的单特异性免疫毒素的体内活性进行比较。 在我们的临床前研究中,双特异性重组免疫毒素显示出显着的治疗脑肿瘤的潜力。

    Pseudomonas exotoxin A with less immunogenic B cell epitopes
    9.
    发明授权
    Pseudomonas exotoxin A with less immunogenic B cell epitopes 有权
    具有较少免疫原性B细胞表位的假单胞菌外毒素A

    公开(公告)号:US09206240B2

    公开(公告)日:2015-12-08

    申请号:US14241782

    申请日:2012-09-13

    摘要: The invention provides a Pseudomonas exotoxin A (PE) comprising an amino acid sequence having a substitution of one or more of amino acid residues E420, D463, Y481, L516, R563, D581, D589, and K606, wherein the amino acid residues are defined by reference to SEQ ID NO: 1. The invention further provides related chimeric molecules, as well as related nucleic acids, recombinant expression vectors, host cells, populations of cells, and pharmaceutical compositions. Methods of treating or preventing cancer in a mammal, methods of inhibiting the growth of a target cell, methods of producing the PE, and methods of producing the chimeric molecule are further provided by the invention.

    摘要翻译: 本发明提供了一种假单胞菌外毒素A(PE),其包含具有氨基酸残基E420,D463,Y481,L516,R563,D581,D589和K606中的一个或多个取代的氨基酸序列,其中定义了氨基酸残基 本发明还提供了相关的嵌合分子以及相关的核酸,重组表达载体,宿主细胞,细胞群和药物组合物。 治疗或预防哺乳动物癌症的方法,抑制靶细胞生长的方法,生产PE的方法和制备嵌合分子的方法进一步由本发明提供。

    Immunogenic Peptides of Xage-1
    10.
    发明申请
    Immunogenic Peptides of Xage-1 审中-公开
    Xage-1免疫原性肽

    公开(公告)号:US20130171178A1

    公开(公告)日:2013-07-04

    申请号:US10582703

    申请日:2004-12-13

    摘要: XAGE-1 is a gene expressed in a number of important human cancers, including prostate cancer, lung cancer, breast cancer, ovarian cancer, glioblastoma, pancreatic cancer, and melanoma. It has now been discovered that peptides of fifty or fewer amino acids comprising the sequence X1X2X3PSAPSPX4 (SEQ ID NO:5), where X1 is any amino acid and is preferably G or Y; X2 is selected from the group consisting of L, M, A, I, V, and T, with L and M being preferred; X3 is a hydrophobic residue, M or A; and X4 is V, M, L, A, I, or T, and is preferably V, bind to the HLA-A2 MHC class I molecule, and can be used to raise immune responses to XAGE-1-expressing cancers. In some embodiments, the P at position 7, the S at position 8, or the P at position 9, can be omitted to create a 9 amino acid peptide. The invention provides immunogenic peptides, nucleic acids encoding them, vectors comprising the nucleic acids, uses of the peptides and nucleic acids for manufacture of medicaments, methods of using the peptides and nucleic acids, and compositions of the peptides or nucleic acids in pharmaceutically acceptable carriers.

    摘要翻译: XAGE-1是在许多重要的人类癌症中表达的基因,包括前列腺癌,肺癌,乳腺癌,卵巢癌,胶质母细胞瘤,胰腺癌和黑素瘤。 现在已经发现包含序列X1X2X3PSAPSPX4(SEQ ID NO:5)的五十个或更少的氨基酸的肽,其中X 1是任何氨基酸并且优选是G或Y; X2选自L,M,A,I,V和T,其中L和M是优选的; X3是疏水残基M或A; 并且X4是V,M,L,A,I或T,并且优选为V,结合HLA-A2 MHC I类分子,并且可用于引起对表达XAGE-1的癌症的免疫应答。 在一些实施方案中,可以省略位置7处的P,位置8处的S或位置9处的P,以产生9个氨基酸的肽。 本发明提供免疫原性肽,编码它们的核酸,包含核酸的载体,肽和核酸用于制备药物的用途,使用肽和核酸的方法,以及肽或核酸在药学上可接受的载体中的组合物 。