BaTiO3 Nanocarriers: Advancing Targeted Therapies with Smart Drug Release.

Background/Objectives: Barium titanate (BaTiO₃)-based nanocarriers have emerged as versatile and promising platforms for targeted drug delivery, owing to their unique combination of biocompatibility, piezoelectric and ferroelectric properties, as well as responsiveness to external stimuli. These multifunctional ceramic nanoparticles can be precisely engineered to enable spatiotemporally controlled release of therapeutic agents, triggered by physical stimuli such as ultrasound, light, magnetic fields, temperature changes, and pH variations. Such an approach enhances treatment efficacy while reducing systemic side effects. Methods: This review provides a comprehensive overview of the latest advancements in the development and biomedical application of BaTiO₃-based nanocarriers. Special emphasis is placed on modern synthesis strategies, surface functionalization methods, and the integration of BaTiO₃ with other functional nanomaterials to create hybrid systems with improved therapeutic performance. Key challenges in clinical translation are also discussed, including biocompatibility assessment, biodistribution, and regulatory requirements. Conclusions: BaTiO₃-based nanocarriers show promise as materials well suited for advanced biomedical applications. The paper concludes with an outline of future research directions aimed at optimizing these advanced nanosystems for precision and personalized medicine, with applications in oncology, anti-infective therapy, and regenerative medicine.