Progress and perspectives on targeting nanoparticles for brain drug delivery

Area of Science:

• Nanotechnology applications in neuropharmacology
• Drug delivery systems for central nervous system disorders

Background:

• Pharmacological treatment of central nervous system (CNS) disorders is hindered by the blood-brain barrier (BBB), which restricts drug entry.
• Existing barriers include the BBB, blood-brain tumor barrier (BBTB), and nose-to-brain barrier, complicating effective drug delivery.
• Nanotechnology presents a promising avenue to overcome these delivery challenges.

Purpose of the Study:

• To review the barriers impeding drug delivery to the brain.
• To explore various strategies for achieving brain-targeted drug delivery.
• To discuss concerns and future perspectives in developing brain-targeted delivery systems.

Main Methods:

• Comprehensive literature review of existing research on brain barriers and drug delivery systems.
• Analysis of nanotechnology-based approaches for overcoming the BBB, BBTB, and nose-to-brain pathways.
• Discussion of direct targeting of diseased brain cells and dual-targeted delivery strategies.

Main Results:

• Identified key challenges posed by the BBB, BBTB, and nose-to-brain barrier to CNS drug delivery.
• Highlighted nanotechnology as a critical tool for enhancing drug penetration and targeting within the brain.
• Outlined diverse delivery strategies including BBB traversal, direct cellular targeting, and combined approaches.

Conclusions:

• Nanotechnology holds significant potential for overcoming neurological barriers and enabling effective CNS drug therapy.
• Further research and development are needed to address concerns and optimize brain-targeted delivery systems.
• Advancements in nanotechnology are crucial for the future of treating central nervous system disorders.