A REVIEW ON NANOPARTICLES BASED DRUG DELIVERY SYSTEM OF CANCER THERAPY

While targeted drug delivery represents a significant leap forward in oncology, its success is often hampered by the complex nature of tumor heterogeneity and the restrictive conditions of the local microenvironment. Nanotechnology provides a sophisticated solution to these hurdles, offering a platform for the high-precision targeting of malignant cells that spares healthy surrounding tissue. By engineering nanoparticles to bypass physiological barriers and navigate the tumor landscape, researchers can deliver therapeutic payloads directly where they are most needed. Strategic modifications to the nanoparticle surface—such as functionalization for better stability and extended circulation not only improve cellular uptake but also help overcome persistent clinical issues like multidrug resistance and poor penetration into dense, solid tumors. Because these systems can be programmed for controlled, sustained release, they ensure a more consistent therapeutic effect over time. Ultimately, the continued evolution of nanomedicine is paving the way for a paradigm shift toward personalized oncology, where treatments are specifically calibrated to the unique biological profile of each patient.