Transferrin Receptor Targeted Cellular Delivery of Doxorubicin Via a Reduction-Responsive Peptide-Drug Conjugate

Transferrin receptors (TfRs) are overexpressed in tumor cells but are scarce in normal tissues, which makes TfR an attractive target for drug treatment of cancer. The objective of this study was to evaluate the potential of BP9a (CAHLHNRS) as a peptide vector for constructing TfR targeted peptide-drug conjugates and selective drug delivery. Doxorubicin (DOX) was connected to BP9a via a disulfide-intercalating linker to afford a...