ACTIVE PEPTIDE FOR INHIBITING AMPA RECEPTOR AND PREPARATION METHOD AND USE THEREOF

    公开(公告)号:US20180094028A1

    公开(公告)日:2018-04-05

    申请号:US15834026

    申请日:2017-12-06

    IPC分类号: C07K5/113 C07K1/34 C12P21/06

    摘要: Provided is an active peptide for inhibiting an AMPA receptor and a preparation method and use thereof. The method for preparing the active peptide comprises the following steps: 1) soaking a salmon skin and crushing, adding water and beating, and then adjusting pH to 6.5-7.5; 2) subjecting to a first enzymolysis using a neutral protease; 3) subjecting to a second enzymolysis using papain enzyme and then inactivating enzyme; and 4) centrifuging the enzymatic hydrolysate, and then subjecting the centrifuged supernatant to membrane filtration, concentration and decoloration, to prepare the active peptide. The active peptide contains a tetrapeptide with an amino-acid sequence of Glu-Gly-Ala-Arg. The tetrapeptide has good solubility, can selectively inhibit neuronal synaptic transmission caused by an AMPA receptor, and has a significant antiepileptic effect.

    Corn active peptide additive for cell culture medium
    10.
    发明授权
    Corn active peptide additive for cell culture medium 有权
    玉米活性肽添加剂用于细胞培养基

    公开(公告)号:US09534026B2

    公开(公告)日:2017-01-03

    申请号:US14583058

    申请日:2014-12-24

    IPC分类号: C12N5/00 C07K14/415 C12P21/06

    摘要: The present invention provides a corn active peptide additive for cell culture medium, wherein in the corn active peptide additive, oligopeptides with molecular weight of lower than 1000 Dalton account for equal to or more than 90 wt % of total proteins, and the oligopeptides at least comprise one or more of AP, SAP, PAL, VNAP, PSSQ, and TQPGPQ. The corn active peptide additive of the present invention can be compounded with various basic culture mediums for serum-free culture of various animal cells, which not only substantially lowers the cost for cell culturing and reduces pollution and other problems caused by an animal derived component, but also can promote cell proliferation, improve cell viability and enhance expression of cell products.

    摘要翻译: 本发明提供了一种用于细胞培养基的玉米活性肽添加剂,其中在玉米活性肽添加剂中,分子量低于1000道尔顿的寡肽占总蛋白质的90重量%以上,寡肽至少 包括AP,SAP,PAL,VNAP,PSSQ和TQPGPQ中的一个或多个。 本发明的玉米活性肽添加剂可以与各种碱性培养基混合,用于各种动物细胞的无血清培养,不仅大大降低了细胞培养的成本,还减少了由动物衍生成分引起的污染和其它问题, 而且可以促进细胞增殖,提高细胞活力,增强细胞产物的表达。