Modular design of nanobody–drug conjugates for targeted-delivery of platinum anticancer drugs with an MRI contrast agent

A multifunctional nanobody–drug conjugate (NDC) was constructed in this work for the targeted delivery of a platinum prodrug and an MRI contrast agent. The NDC can be specifically internalized into EGFR positive cancer cells, resulting in higher therapeutic effect and lower side-effects relative to cisplatin. The Gd-binding domain enables the in situ detection of the drug distribution in vivo.