USE OF CONKUNITZIN-S1 FOR THE MODULATION OF GLUCOSE-INDUCED INSULIN SECRETION
    1.
    发明申请
    USE OF CONKUNITZIN-S1 FOR THE MODULATION OF GLUCOSE-INDUCED INSULIN SECRETION 审中-公开
    用于调节葡萄糖诱导的胰岛素分泌的康宁嗪-S1

    公开(公告)号:US20110224135A1

    公开(公告)日:2011-09-15

    申请号:US13057809

    申请日:2009-08-10

    CPC分类号: C07K14/43504 C07K14/8114

    摘要: The present invention relates to a (poly)peptide or a peptidomimetic thereof having the biological activity of Conkunitzin-S1, wherein said (poly)peptide is selected from (a) a polypeptide comprising or having the amino acid sequence of SEQ ID NO: 1; (b) a polypeptide having at least 85% sequence identity to SEQ ID NO:1; or (c) a fragment of a) or b); wherein said (poly)peptide or peptidomimetic specifically modulates the activity of a channel having the activity of a Kv1.7 containing channel, for the treatment or prevention of metabolic diseases or conditions, or secondary diseases or conditions related to said metabolic diseases or conditions. The present invention furthermore relates to a method of screening for (poly)peptides derived from Conkunitzin-S1 suitable for specifically modulating the activity of a channel having the activity of a Kv1.7 containing channel, comprising: (a) altering the amino acid sequence of Conkunitzin-S1 represented by SEQ ID NO: 1 by deleting and/or inserting and/or replacing at least one amino acid; and (b) determining the modulatory effect of the (poly)peptide obtained in step (a) (i) on a channel having the activity of a Kv1.7 containing channel and (ii) on channels, preferably potassium channels, not having the activity of a Kv1.7 containing channel, which are optionally expressed on the same cell as the channel having the activity of a Kv1.7 containing channel.

    摘要翻译: 本发明涉及具有Conkunitzin-S1生物活性的(多)肽或其肽模拟物,其中所述(多)肽选自(a)包含或具有SEQ ID NO:1的氨基酸序列的多肽 ; (b)与SEQ ID NO:1具有至少85%序列同一性的多肽; 或(c)a)或b)的片段; 其中所述(多)肽或肽模拟物特异性调节具有Kv1.7含有通道活性的通道的活性,用于治疗或预防代谢疾病或病症,或与所述代谢疾病或病症有关的继发性疾病或病症。 本发明还涉及一种筛选衍生自Conkunitzin-S1的(多)肽的方法,其适用于特异性调节含有Kv1.7含有通道活性的通道的活性,其包括:(a)改变氨基酸序列 通过删除和/或插入和/或替换至少一个氨基酸的由SEQ ID NO:1表示的Conkunitzin-S1; (b)确定步骤(a)(i)中获得的(多)肽对具有Kv1.7含有通道活性的通道的调节作用,和(ii)在不具有 包含Kv1.7的通道的活性,其任选地在与具有含有Kv1.7的通道的活性的通道相同的单元上表达。

    Conotoxin peptide PVIIA
    4.
    发明授权
    Conotoxin peptide PVIIA 失效
    芋螺毒素肽PVIIA

    公开(公告)号:US5672682A

    公开(公告)日:1997-09-30

    申请号:US619936

    申请日:1996-03-18

    CPC分类号: C07K14/43504 A61K38/00

    摘要: A new peptide, .kappa.-conotoxin PVIIA, is disclosed. This peptide is found naturally in the cone snail Conus purpurascens and has the amino acid sequence Cys-Arg-Ile-Xaa-Asn-Gln-Lys-Cys-Phe-Gln-His-Leu-Asp-Asp-Cys-Cys-Ser-Arg-Lys-Cys-Asn-Arg-Phe-Asn-Lys-Cys-Val (SEQ ID NO:1) where Xaa represents 4-trans-hydroxyproline hydroxyproline or proline. This peptide together with a previously disclosed peptide, .delta.-conotoxin PVIA, act synergistically to rapidly immobilize fish which are injected with the two peptides. Injection of .kappa.-conotoxin PVIIA alone results in different symptoms with an injected fish becoming hyperactive and then contracting and suddenly extending all major fins. This "fin-popping" occurs repeatedly resulting in a series of jerky movements, but injection of only .kappa.-conotoxin PVIIA does not immobilize or kill the fish.

    摘要翻译: 公开了一种新的肽,κ-毒素PVIIA。 这种肽天然存在于锥螺旋锥体中,具有氨基酸序列Cys-Arg-Ile-Xaa-Asn-Gln-Lys-Cys-Phe-Gln-His-Leu-Asp-Asp-Cys-Cys-Ser -Arg-Lys-Cys-Asn-Arg-Phe-Asn-Lys-Cys-Val(SEQ ID NO:1),其中Xaa表示4-反式 - 羟脯氨酸羟脯氨酸或脯氨酸。 该肽与先前公开的肽δ-毒素PVIA一起协同作用以快速固定注射了两种肽的鱼。 单独注射κ-毒素PVIIA导致不同的症状,注射的鱼变得活跃,然后收缩并突然延伸所有主要鳍。 这种“昙花一现”反复发生,导致一连串的剧烈运动,但只注射κ-毒素PVIIA不会使鱼类不能固定或杀死。