| CPC C07K 14/55 (2013.01) [A61K 47/60 (2017.08); A61K 47/62 (2017.08); C07K 14/5406 (2013.01); C07K 14/5437 (2013.01); C07K 14/5443 (2013.01); A61K 38/00 (2013.01); C07B 2200/13 (2013.01); C07K 2319/30 (2013.01); C07K 2319/33 (2013.01); C07K 2319/74 (2013.01)] | 20 Claims |
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1. A method for treating cancer comprising administering to a subject having cancer a non-naturally occurring polypeptide comprising domains X1, X2, X3, and X4, wherein:
(a) X1 is a peptide comprising the amino acid sequence EHALYDAL (SEQ ID NO: 1);
(b) X2 is a helical-peptide of at least 8 amino acids in length;
(c) X3 is a peptide comprising the amino acid sequence YAFNFELI (SEQ ID NO:2);
(d) X4 is a peptide comprising the amino acid sequence ITILQSWIF (SEQ ID NO:3);
wherein X1, X2, X3, and X4 may be in any order in the polypeptide;
wherein amino acid linkers may be present between any of the domains; and
wherein the polypeptide binds to IL-2 receptor β
c heterodimer (IL-2Rβ c). |