A CELL THERAPY METHOD FOR THE TREATMENT OF TUMORS
    1.
    发明申请
    A CELL THERAPY METHOD FOR THE TREATMENT OF TUMORS 有权
    用于治疗肿瘤的细胞治疗方法

    公开(公告)号:US20090004142A1

    公开(公告)日:2009-01-01

    申请号:US11782264

    申请日:2007-07-24

    IPC分类号: A61K38/21 A61K35/12 A61P35/00

    摘要: T cell responses are often diminished in humans with a compromised immune system. We have developed a method to isolate, stimulate and expand naïve cytotoxic T lymphocyte precursors (CTLp) to antigen-specific effectors, capable of lysing tumor cells in vivo. This ex vivo protocol produces fully functional effectors. Artificial antigen presenting cells (AAPCs; Drosophila melanogaster) transfected with human HLA class I and defined accessory molecules, are used to stimulate CD8+ T cells from both normal donors and cancer patients. The class I molecules expressed to a high density on the surface of the Drosophila cells are empty, allowing for efficient loading of multiple peptides that results in the generation of polyclonal responses recognizing tumor cells endogenously expressing the specific peptides. The responses generated are robust, antigen-specific and reproducible if the peptide epitope is a defined immunogen. This artificial antigen expression system can be adapted to treat most cancers in a significant majority of the population.

    摘要翻译: 免疫系统受损的人类T细胞反应往往减少。 我们已经开发出一种方法来分离,刺激并扩增能够在体内裂解肿瘤细胞的抗原特异性效应子的初始细胞毒性T淋巴细胞前体(CTLp)。 这种离体协议产生完全功能的效应器。 人类抗原呈递细胞(AAPCs;黑腹果蝇)用人类HLA I类和定义的辅助分子转染,用于刺激来自正常供体和癌症患者的CD8 + T细胞。 在果蝇细胞表面上以高密度表达的I类分子是空的,允许有效负载多个肽,导致产生识别内源表达特定肽的肿瘤细胞的多克隆应答。 如果肽表位是定义的免疫原,所产生的响应是鲁棒的,抗原特异性的和可重复的。 这种人造抗原表达系统可以适应于治疗绝大多数人群中的大多数癌症。