Spantide I, a substance P analog, is a selective NK1 receptor antagonist, with Ki values of 230 nM and 8150 nM for NK1 and NK2 receptor, respectively. Spantide I provides an approach to reduce type 1 and enhance the type 2 cytokine IL-10 in the infected cornea, leading to a significant reduction in corneal perforation.

α-Melanocyte Stimulating Hormone [Met5, Pro6, D-Phe7, D-Trp9, Phe10] (5-13) (MSHa)

JK-P3 is a pyrazole-based inhibitor of VEGFR-2 (IC50: 7.8 μM). JK-P3 inhibits FGFR 1/3 kinase activity in vitro, but has no effect on FGFR signaling in cell-based assays.