| CPC C07K 14/525 (2013.01) [C07K 16/2869 (2013.01); C07K 16/32 (2013.01); A61K 38/00 (2013.01); A61K 2039/505 (2013.01); C07K 2317/569 (2013.01); C07K 2319/00 (2013.01); C07K 2319/74 (2013.01)] | 7 Claims |
|
1. A composition comprising a proteinaceous construct, comprising:
(i) a single chain polypeptide comprising three human TNFs, wherein:
at least one human TNF is modified, wherein the at least one modified human TNF comprises a modified amino acid residue by substitution at the same position selected from Y87, I97, or Y115 relative to wild type human TNF (SEQ ID NO: 14),
and wherein the at least one modified human TNF has reduced affinity towards its receptor as compared to wild type human TNF;
(ii) a targeting moiety that is a single domain antibody (sdAb) directed to a neo-vasculature tissue or cancer tissue specific marker,
wherein the composition has significant biological activity towards cells that are targeted by the targeting moiety.
|