NANOCARRIER AND LIPID-BASED SYSTEMS: ADVANCED PLATFORMS FOR TARGETED DRUG DELIVERY

The evolution of drug delivery systems has been significantly advanced by the development of nanocarrier and lipid-based platforms, which address critical challenges in pharmaceutical therapeutics including poor bioavailability, limited targeting specificity, and systemic toxicity. This chapter provides a comprehensive exploration of lipid-based nanocarriers, examining their fundamental design principles, physicochemical characteristics, and therapeutic potential. Beginning with an overview of lipid nanocarrier classifications—including liposomes, solid lipid nanoparticles (SLNs), nanostructured lipid carriers (NLCs), and lipid-polymer hybrid systems—the chapter elucidates the structural features that enable enhanced drug encapsulation and controlled release. Detailed discussions cover the formulation strategies, characterization techniques, and surface modification approaches that optimize these platforms for specific therapeutic applications. The chapter further explores the mechanisms of cellular uptake, biodistribution patterns, and targeting strategies that enable precision medicine approaches. Clinical translation aspects, including scale-up manufacturing, regulatory considerations, and current marketed formulations, are examined alongside emerging trends in personalized nanomedicine. Through critical analysis of recent advances and ongoing challenges, this chapter serves as a comprehensive resource for researchers, pharmaceutical scientists, and clinicians seeking to understand and leverage lipid-based nanocarrier systems for next-generation therapeutics.