In the field of biomimicry, several developments have been made for drug delivery of paclitaxel or doxorubicin to lung tumors. These new systems are based on characteristics of viruses, however, two structures have been more closely studied: capside and filmamentous, which is best for this particular use?

The capside one is a polydopamine coating that is easy to fabricate and customize, it carries the drug in the PDA capsule.

The filamentous one has various shells (the outer one is made of bovine albumin serum) and a hydrophobic polymer core. They had blood circulation times longer than spherical ones and thus a hight anti-cancer activity.