Synthesis of zwitterionic-functionalized conjugated nanoparticles for targeted drug delivery applications

Conference Dates

June 5-9, 2018


Polymeric Nanoparticles (NPs) represent a promising pharmacological tool, since their structure can be modified to obtain: i) encapsulation and controlled release of a wide range of active compounds, ranging from small molecules to siRNA or oligonucleotides; ii) selective cell targeting, thus allowing precise drug delivery to the desired site of action. A powerful strategy to achieve selectivity of uptake in specific cell types is to conjugate the nanoparticles to a ligand specific for receptors expressed by the target cell type. This offers the advantage of a potentially improved drug efficacy with limited side effects and toxicity.

Polymeric nanoparticles in a range of 20–100 nm have a high potential for in vivo applications, due to their ability to circulate in the blood for a long period of time. In fact, this size range allows to avoid renal and lymphatic clearance, to prevent opsonization and at the same time improves the internalization by cells.

In this work we address the synthesis by reversible addition-fragmentation chain transfer (RAFT) of biodegradable, zwitterionic-based nanoparticles. This Zwitterionic nanoparticles act as super non-fouling surfaces that prevent protein adsorption from complex biological media. The nanoparticles were functionalized with different numbers of selective ligands through click chemistry; different dimensions were synthetized changing the length of the hydrophobic part. In vitro studies were performed to evaluate the uptake of functionalized nanoparticles.

42.pdf (177 kB)

This document is currently not available here.