One of the fundamental problems in drug-delivery is striking a balance between toxicity and therapeutic effect. Hydrogels have been widely applied as intelligent carriers in controlled drug-delivery systems. Self-assembled hydrogel-based drug-delivery has been hindered by the unknown fate of the host gelator after the gel degradation. Thus, we propose a conceptually novel approach to address these limitations. The existing ambiguity can be substantially decreased by designing prodrug-based LMWGs from existing drugs whose metabolic pathways are well documented (See Figure below).
NEEDLES THAT SENSE TRAVEL THROUGH TISSUES
In collaboration with Alex Slocum and Erik Bassett at MIT, we have developed a new needle sensing device that can detect travel of needles through various tissues. This can be used to significantly reduce complications associated with placement of needles, wires and catheters.