1. Enhanced Targeting: Nanoparticles can be tailored to specifically target cancer cells, minimizing damage to healthy tissues. 2. Improved Delivery: They can protect therapeutic agents from degradation and ensure their controlled release at the tumor site. 3. Immune Activation: Nanoparticles can be designed to boost the immune system's ability to recognize and attack cancer cells. 4. Combination Therapy: Nano immunotherapy can be combined with other treatments like chemotherapy or radiation to enhance overall efficacy.