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    • 5. 发明申请
    • IL-2 TRANSMEMBRANE CONSTRUCTS
    • IL-2 TRANSMEMBRANE结构
    • WO2004080404A2
    • 2004-09-23
    • PCT/US2004/007012
    • 2004-03-08
    • UNIVERSITY OF UTAH RESEARCH FOUNDATIONSAMLOWSKI, WolframADAMS, Nathan, BradleyMCGREGOR, John
    • SAMLOWSKI, WolframADAMS, Nathan, BradleyMCGREGOR, John
    • A61K
    • C07K14/55A61K38/00C07K14/70535C07K2319/03C07K2319/20
    • Compounds, genetic constructs, and cancer treatment methods 035 provided. Expression vectors were designed to express fusion genes including hIL-2 with 0 FcT- ? transmembrane anchor derived from 0 subunit of the FC epsilon receptor. mRN 0nd the IL­2tm fusion protein was expressed in transfected RD995 tumor cells. Expression of the IL­2tm protein on the tumor A511 surface membrane was confirmed by microscopy. RD995 ce11s transfected with IL-2tm or pCMV2b (empty expression vector) were implanted subcutaneously into !3 /HEN mice. Tumors in groups of mice implanted with 10 6 or 10 5 RD995 ce11s transfected with IL-2tm grew slower than controls. Without being limited to any one theory, it is believed that selective expression >f cytokines such as IL-2 on the surface >f tumors is likely to stimulate tumor-infiltrating lymphocytes that are primed and already recognize tumor antigens, enhancing tumor recognition 0nd killing, potentially avoiding toxicity associated with known cytokine therapies.
    • 提供化合物,遗传构建体和癌症治疗方法035。 设计表达载体以表达融合基因,包括hIL-2与来自FCε受体的0亚基的0 FcT-跨膜锚。 mRN 0,IL2tm融合蛋白在转染的RD995肿瘤细胞中表达。 通过显微镜证实IL2tm蛋白在肿瘤A511表面膜上的表达。 将用IL-2tm或pCMV2b(空表达载体)转染的RD995 ce11s皮下植入!3 / HEN小鼠。 植入用IL-2tm转染的10 6或10 5 RD995 ce11s的小鼠组的肿瘤生长慢于对照组。 不限于任何一种理论,认为在表面> f肿瘤上的选择性表达> f细胞因子如IL-2可能刺激被引发并已经识别肿瘤抗原的肿瘤浸润性淋巴细胞,增强肿瘤识别第0次杀死 ,可能避免与已知的细胞因子疗法相关的毒性。