174485-20-2Relevant articles and documents
Modular Assembly of Reversible Multivalent Cancer-Cell-Targeting Drug Conjugates
Santos, Fábio M. F.,Matos, Ana I.,Ventura, Ana E.,Gon?alves, Jo?o,Veiros, Luís F.,Florindo, Helena F.,Gois, Pedro M. P.
, p. 9346 - 9350 (2017)
Herein is described a new modular platform for the construction of cancer-cell-targeting drug conjugates. Tripodal boronate complexes featuring reversible covalent bonds were designed to accommodate a cytotoxic drug (bortezomib), poly(ethylene glycol) (Peg) chains, and folate targeting units. The B-complex core was assembled in one step, proved stable under biocompatible conditions, namely, in human plasma (half-life up to 60 h), and underwent disassembly in the presence of glutathione (GSH). Stimulus-responsive intracellular cargo delivery was confirmed by confocal fluorescence microscopy, and a mechanism for GSH-induced B-complex hydrolysis was proposed on the basis of mass spectrometry and DFT calculations. This platform enabled the modular construction of multivalent conjugates with high selectivity for folate-positive MDA-MB-231 cancer cells and IC50 values in the nanomolar range.