Doxorubicin-loaded albumin nanoparticles: formulation and characterization

Area of Science:

• Nanotechnology
• Materials Science
• Pharmacology

Background:

• Solid tumors present challenges for effective drug delivery due to poor penetration and systemic toxicity.
• Albumin nanoparticles offer a biocompatible platform for drug encapsulation and targeted delivery.
• Doxorubicin (Dox) is a potent chemotherapeutic agent with a narrow therapeutic index.

Purpose of the Study:

• To develop Doxorubicin (Dox) loaded albumin nanoparticles for regional drug release in solid tumors.
• To characterize the physical and chemical properties of the developed nanoparticles.
• To evaluate the in vitro drug release profile of Dox from albumin nanoparticles.

Main Methods:

• Albumin nanoparticles were prepared using the coacervation method.
• Nanoparticle characterization involved Scanning Electron Microscopy (SEM), Differential Scanning Calorimetry (DSC), Dynamic Light Scattering (DLS), and Laser Doppler Electrophoresis (LDE).
• Doxorubicin entrapment efficiency and in vitro drug release were assessed.

Main Results:

• Albumin nanoparticle size ranged from 67 nm to 106 nm depending on the drug loading method (A and B).
• Scanning Electron Microscopy (SEM) confirmed the spherical morphology of nanoparticles produced at 4°C.
• Nanoparticle size decreased with decreasing production temperature.

Conclusions:

• Albumin nanoparticles can effectively encapsulate Doxorubicin (Dox).
• The production temperature influences nanoparticle size, with lower temperatures yielding smaller particles.
• These Dox-loaded albumin nanoparticles show promise for targeted drug delivery in solid tumors.