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    • 6. 发明申请
    • PROTEIN-CHAPERONED T-CELL VACCINES
    • 蛋白质辅助的T细胞疫苗
    • WO2017155981A1
    • 2017-09-14
    • PCT/US2017/021136
    • 2017-03-07
    • MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    • IRVINE, DarrellWITTRUP, Karl, DaneMEHTA, Naveen, K.RAKHRA, KavyaZHU, Eric, Franklin
    • A61K39/00A61K39/39
    • Protein antigens are provided. The protein antigens typically include a peptide antigen conjugated or fused to a chaperone protein to form a "chaperone-antigen" that increases lymph node uptake; improves an immune response; or a combination thereof relative to the peptide antigen alone. The immune response can be, for example, increased antigen-specific proliferation, enhanced cytokine production, stimulation of differentiation and/or effector functions, promotion of survival, rescue from exhaustion and/or anergy of T cells, or a combination thereof. Chaperon-antigens can also be used to induce tolerance and increase immune suppressive responses. In the most preferred embodiments, the peptide antigen is fused to the chaperone protein to form a fusion protein. The "chaperone-antigen" can be combined with an adjuvant to form a vaccine and administered to a subject to modulate an immune response to the antigen. Methods of increasing immune responses, treating cancer and infectious diseases and inducing tolerance are also provided.
    • 提供蛋白质抗原。 蛋白质抗原通常包括与分子伴侣蛋白缀合或融合以形成“分子伴侣 - 抗原”的肽抗原。 增加淋巴结摄取; 改善免疫反应; 或其相对于单独的肽抗原的组合。 免疫应答可以是例如增加的抗原特异性增殖,增强的细胞因子产生,刺激分化和/或效应器功能,促进存活,从T细胞耗尽和/或无反应性挽救,或其组合。 伴侣抗原也可用于诱导耐受并增加免疫抑制反应。 在最优选的实施方案中,肽抗原与伴侣蛋白融合形成融合蛋白。 “分子伴侣 - 抗原” 可与佐剂组合以形成疫苗并施用于受试者以调节对抗原的免疫应答。 还提供了增加免疫应答,治疗癌症和感染性疾病以及诱导耐受性的方法。