SUPPRESSION OF ITCH

申请号 US15964969 申请日 2018-04-27 公开(公告)号 US20180298367A1 公开(公告)日 2018-10-18
申请人 IPSEN BIOINNOVATION LIMITED; 发明人 KEITH FOSTER;
摘要 The invention provides a polypeptide, for use in suppressing or treating itch, wherein the polypeptide comprises: a non-cytotoxic protease, which protease is capable of cleaving a SNARE protein in an itch-specific DRG neuron or a pruriceptor; a Targeting Moiety (TM) that is capable of binding to a Binding Site on the itch-specific DRG neuron or a pruriceptor, which Binding Site is capable of undergoing endocytosis to be incorporated into an endosome within the itch-specific DRG neuron or a pruriceptor, and wherein said itch-specific DRG neuron or a pruriceptor expresses said SNARE protein; and a translocation domain that is capable of translocating the protease from within an endosome, across the endosomal membrane and into the cytosol of the itch-specific DRG neuron or a pruriceptor; with the proviso that the polypeptide is not a clostridial neurotoxin (holotoxin) molecule.
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