Fig. 1: Delivery of SN-38 prodrug by engineered Lp to NPC cells.
From: Prodrug-conjugated tumor-seeking commensals for targeted cancer therapy

a Lp recognizes NPC cells via heparan sulfate binding. b, c Specific binding of Lp to NPCs. d Loading of biotinylated prodrugs on Lp and release of SN-38 by Lp near NPC cells.