Potassium channel blockers and use thereof in the treatment of autoimmune diseases
申请人:MONASH UNIVERSITY
公开号:US10246496B2
公开(公告)日:2019-04-02
Novel analogues of the sea anemone Stichodactyla helianthus toxin ShK, and their use as, for example, therapeutic agents for treating autoimmune diseases are disclosed. The analogues comprise a ShK toxin polypeptide and an N-terminal extension comprising an amino acid sequence according to formula (I): wherein X−4 is D, E or other negatively-charged amino acid or derivative thereof, X−3 is E, I, L, S, V, W or a tryptophan derivative, X−2 is any amino acid, X−1 is any amino acid, a is absent or a first additional moiety, and b is absent or a second additional moiety.
a-X−4X−3X−2X−1-b(SEQ ID NO: 3) (I)
本发明公开了海葵螺旋藻毒素 ShK 的新型类似物及其用途,例如用作治疗自身免疫性疾病的治疗剂。这些类似物包括 ShK 毒素多肽和 N-末端延伸,N-末端延伸包括符合式(I)的氨基酸序列:其中 X-4 是 D、E 或其他带负电荷的氨基酸或其衍生物,X-3 是 E、I、L、S、V、W 或色氨酸衍生物,X-2 是任何氨基酸,X-1 是任何氨基酸,a 是缺失的或第一附加分子,b 是缺失的或第二附加分子。
a-X-4X-3X-2X-1-b(SEQ ID NO: 3) (I)