Mutant Interleukin-2 (IL-2) Polypeptides
    4.
    发明申请
    Mutant Interleukin-2 (IL-2) Polypeptides 有权
    突变型白细胞介素-2(IL-2)多肽

    公开(公告)号:US20100036097A1

    公开(公告)日:2010-02-11

    申请号:US12535083

    申请日:2009-08-04

    IPC分类号: C07K14/55

    摘要: The present invention relates to IL-2 mutants with increased affinity for the IL-2 alpha-receptor subunit (IL-2Rα). The invention thus includes IL-2 mutants with improved biological potency. The invention also includes methods for directed evolution of IL-2α using yeast surface display to generate mutants with increased affinity for IL-2Rα.

    摘要翻译: 本发明涉及对IL-2α受体亚单位(IL-2Rα)具有增加的亲和力的IL-2突变体。 因此,本发明包括具有改善的生物效能的IL-2突变体。 本发明还包括用于使用酵母表面显示产生IL-2α的定向进化以产生具有增加的对IL-2Rα的亲和力的突变体的方法。

    Mutant epidermal growth factor polypeptides, nucleic acids, and uses therefor
    10.
    发明授权
    Mutant epidermal growth factor polypeptides, nucleic acids, and uses therefor 有权
    突变表皮生长因子多肽,核酸及其用途

    公开(公告)号:US08247531B2

    公开(公告)日:2012-08-21

    申请号:US11725695

    申请日:2007-03-20

    IPC分类号: C07K14/485 A61K38/18

    CPC分类号: C07K14/485 A61K38/00

    摘要: The present invention is based, in part, on our discovery that EGF can be engineered to generate mutants that bind to the EGF receptor (EGFR) of a cell and that have a desirable effect on the activity of the cell. For example, the mutants can agonize the receptor (i.e., increase a biological activity of the receptor), or antagonize the receptor (i.e., decrease or inhibit a biological activity of the receptor). In turn, the rate at which the cell proliferates, for example, can be changed. Moreover, some of these mutants bind EGFR with a higher affinity than wild-type EGF exhibits. The affinity may increase by about, for example, 2-, 5-, 10-, 15-, 20-, 25-, 30-, 50-, or 100-fold relative to wild-type EGF.

    摘要翻译: 本发明部分基于我们的发现,EGF可以被工程化以产生结合细胞的EGF受体(EGFR)的突变体,并且对细胞的活性具有期望的作用。 例如,突变体可以激动受体(即,增加受体的生物活性)或拮抗受体(即降低或抑制受体的生物活性)。 反过来,细胞增殖的速度例如可以改变。 此外,这些突变体中的一些以比野生型EGF显示更高的亲和力结合EGFR。 相对于野生型EGF,亲和力可以增加约例如2-,5-,10-,15-,20-,25-,30-,50-或100倍。