Chemical Modifications on the αvβ6 Integrin Targeting A20FMDV2 Peptide: A Review

Abstract Integrin proteins have received a significant increase in attention in recent scientific endeavors. The current trend uses the pre‐established knowledge that the arginyl‐glycyl‐aspartic acid (RGD) structural motif present in the A20FMDV2 peptide is highly selective for the integrin class αvβ6 which is overexpressed in many cancer types. This review will provide an extensive overview of the existing literature research to date to the best of our knowledge, highlighting significant improvements and drawbacks of structure‐activity relationships (SAR) work undertaken, aiding future research to identify established SAR for an informed design of future A20FMDV2 mimetic inhibitors. Herein, the review aims to collate the existing structural chemical modifications present on A20FMDV2 in the literature to highlight key structural analogues that display more potent biological activity.