Overcoming nonviral gene delivery barriers: perspective and future

Area of Science:

• Biotechnology and Biomedical Engineering
• Gene Therapy and Drug Delivery

Background:

• Developing clinically relevant gene delivery vectors is crucial for combating diseases such as AIDS.
• Nonviral vectors, while promising, face significant in vitro and in vivo barriers limiting their efficiency and gene modulation efficacy.
• Cationic lipids and polymers are the most common classes of nonviral vectors in gene delivery research.

Purpose of the Study:

• To identify and analyze the gene delivery barriers associated with cationic lipid and polymer nonviral vectors.
• To summarize current vector-specific strategies designed to overcome these identified barriers.
• To provide a perspective on advancing nonviral vector performance for clinical applications.

Main Methods:

• Literature review and analysis of existing research on nonviral gene delivery systems.
• Focus on barriers encountered by cationic lipid-based and polymer-based nonviral vectors.
• Synthesis of current strategies employed to mitigate these delivery challenges.

Main Results:

• Detailed examination of specific in vitro and in vivo barriers affecting nonviral vector performance.
• Categorization of strategies tailored to cationic lipids and polymers to enhance gene delivery.
• Highlighting the subviral performance limitations due to persistent barriers.

Conclusions:

• Overcoming delivery barriers is essential for the clinical translation of nonviral gene therapy.
• Targeted strategies for cationic lipids and polymers show potential for improving gene modulation efficacy.
• Continued research into overcoming these barriers is vital for advancing gene therapy for complex diseases.