Switchable probes: pH-triggered and VEGFR2 targeted peptides screening through imprinting microarray†
Abstract
One switchable affinity peptide, STP, is screened out from a high-throughput library by an integrated imprinting microarray. STP is pH triggered and also the ligand of the marker VEGFR2. Efficient cell recognition and penetration as well as an in vivo image could be “turned on” and accelerated only in the condition of VEGFR2 overexpression and a mild acidic environment.