Metal Nanoparticles as Targeted Carriers Circumventing the Blood-Brain Barrier

Area of Science:

• Biomedical Engineering
• Nanotechnology
• Neuroscience

Background:

• Metal nanoparticles possess unique physicochemical properties for biomedical applications.
• These nanoparticles can be engineered for drug delivery, diagnostics, and therapeutics, including theranostics.
• Applications extend to treating central nervous system diseases, but overcoming the blood-brain barrier remains a challenge.

Purpose of the Study:

• To review the potential applications of metal nanoparticles in treating central nervous system diseases.
• To discuss the challenges and mechanisms of crossing the blood-brain barrier (BBB) with engineered nanoparticles.
• To explore intranasal administration as a viable strategy to circumvent the BBB.

Main Methods:

• Review of existing literature on metal nanoparticle applications in biomedicine.
• Analysis of the blood-brain barrier architecture and nanoparticle interaction mechanisms.
• Discussion of intranasal administration route for nanoparticle delivery to the brain.

Main Results:

• Systemic administration of metal nanoparticles results in low brain accumulation due to the BBB.
• Various mechanisms for engineered nanoparticles to cross the BBB are discussed.
• Intranasal administration is proposed as a simpler and potentially more effective route for brain delivery.

Conclusions:

• Metal nanoparticles hold significant promise for treating neurological disorders.
• Overcoming the blood-brain barrier is critical for effective brain-targeted therapies.
• Intranasal administration offers a promising alternative route for nanoparticle delivery, warranting further investigation.