Biomimetic Hydroxyapatite a Potential Universal Nanocarrier for Cellular Internalization & Drug Delivery

Area of Science:

• Biomaterials Science
• Nanotechnology
• Drug Delivery Systems

Background:

• Functional biomaterials are crucial for drug delivery, tissue engineering, and biological probes.
• Developing materials to encapsulate diverse drugs (hydrophilic/hydrophobic) is a key challenge.
• Hydroxyapatite (HAp) is a biocompatible material with potential for biomedical applications.

Purpose of the Study:

• To evaluate hollow hydroxyapatite nanotubes (HAp NTs) as drug delivery vehicles.
• To compare the efficacy of HAp NTs with HAp nanospheres (NSs) for cellular internalization.
• To assess the drug loading capacity and cellular uptake of HAp NTs using model anti-cancer drugs.

Main Methods:

• Synthesis and characterization of hollow hydroxyapatite nanotubes (HAp NTs).
• Loading of hydrophobic (Paclitaxel) and hydrophilic (Doxorubicin hydrochloride) anti-cancer drugs onto HAp NTs and HAp NSs.
• Evaluation of cellular internalization and encapsulation efficiency of drug-loaded nanostructures.

Main Results:

• HAp NTs exhibited significantly higher drug loading capacity than HAp NSs.
• Hollow HAp NTs demonstrated superior cellular internalization and encapsulation efficacy for both drug types.
• The porous structure and large surface area of HAp NTs facilitate targeted delivery and high drug retention.

Conclusions:

• Synthesized HAp NTs serve as effective nanocarriers for diverse drug molecules.
• HAp NTs possess biocompatible, bioactive, and biodegradable properties, making them suitable for widespread biomedical applications.
• These hollow nanotubes represent a promising universal drug carrier system.