4. Conclusion

Research at the interface of physics, chemistry and biology has led to the design of submicron delivery systems capable of transporting biologically active molecules or contrast agents in vivo as close as possible to their target (tissue, cell or even molecular). Although futuristic, the therapeutic advances achieved with these systems have gone beyond the stage of mere laboratory curiosity, and have already led to the marketing of new drugs for the treatment of cancers and certain infectious diseases.

The success of nanotechnology-based delivery methods for active ingredients can be explained by the fact that they represent a break with conventional methods of administering active molecules. Indeed, these technologies provide the tools perfectly suited to making the technological leaps needed to administer new-generation molecules of therapeutic interest, which...