Synthesis and activity of a folate targeted monodisperse PEG camptothecin conjugate
摘要:
A folate targeted camptothecin small molecule drug conjugate (SMDC) was synthesized using a monodisperse PEG spacer linked to folate via a releasable disulfide carbonate linker. Cell cytotoxicity in human KB cells exhibited an IC50 of 6 nM. Importantly, activity of the prodrug was blocked by excess folate, demonstrating receptor-mediated celluar uptake of the PEG conjugate. (c) 2013 Elsevier Ltd. All rights reserved.