Liposomes enhance drug delivery through multiple mechanisms:
1. Enhanced Permeability and Retention (EPR) Effect: Tumor vasculature is often more permeable than normal tissue, allowing liposomes to preferentially accumulate in tumor sites. 2. Prolonged Circulation Time: Liposomes can be engineered to evade the immune system, enhancing their circulation time in the bloodstream. 3. Controlled Release: Liposomes can release their payload in a controlled manner, ensuring a sustained therapeutic effect.
