Development of Nano-Enabled Drug Delivery Systems and Their Analytical Characterization for Improved Therapeutic Efficacy

Abstract

ABSTRACT Nano-enabled drug delivery systems (NDDS) represent a transformative paradigm in contemporary pharmaceutical sciences, engineered to overcome fundamental biopharmaceutical challenges including poor aqueous solubility, non-specific biodistribution, rapid systemic clearance, and sub-therapeutic bioavailability. Through tailored nanoscale engineering, architectures such as solid lipid nanoparticles (SLNs), nanostructured lipid carriers (NLCs), polymeric micelles, liposomes, and mesoporous silica nanoparticles (MSNs) enable sustained payload pharmacokinetics, cellular internalization, and microenvironmental protection. However, clinical translation strictly depends upon comprehensive analytical characterization cascades that define Critical Quality Attributes (CQAs). This review systematically assesses design principles, formulation engineering, and state-of-the-art analytical characterization methodologies governing NDDS. Hydrodynamic sizing and surface charge analysis (DLS/ELS), high-resolution morphological examination (Cryo-TEM, AFM), solid-state crystalline profiling (PXRD, DSC, FTIR), and hyphenated chromatographic quantification (RP-HPLC, LC MS/MS) are rigorously evaluated alongside mathematical in vitro release kinetic models. Furthermore, biological barriers, protein corona dynamics, nanotoxicological considerations, and international regulatory frameworks are critically analyzed to establish an integrative translational roadmap.

KEYWORDS: Nano-Enabled Drug Delivery Systems, Analytical Characterization, Solid Lipid Nanoparticles, Polymeric Micelles, Dynamic Light Scattering, Release Kinetics, Biopharmaceutical Efficacy, In Vitro-In Vivo Correlation.