Aptamers as Therapeutic Agents: Has the Initial Euphoria Subsided?

Area of Science:

• Biotechnology
• Nucleic Acid Therapeutics
• Drug Development

Background:

• Aptamers are synthetic oligonucleotide ligands with significant therapeutic potential.
• Numerous aptamers targeting disease-related molecules have been identified.
• Current clinical translation and commercialization lag behind other biologics like monoclonal antibodies.

Purpose of the Study:

• To review the benefits and limitations of therapeutic aptamer development.
• To discuss current advances and future directions in aptamer research.
• To highlight the need for deeper understanding of aptamer properties for clinical application.

Main Methods:

• Literature review of aptamer research and development.
• Analysis of challenges in aptamer pharmacokinetics and immunogenicity.
• Discussion of strategies to overcome limitations for therapeutic use.

Main Results:

• Aptamers offer desirable properties like selectivity and cost-efficiency.
• Key challenges include short in vivo half-life, immunogenicity, and cellular entrapment.
• Despite slow progress, aptamer research continues to advance.

Conclusions:

• Therapeutic aptamer development requires addressing significant hurdles.
• Enhanced understanding of aptamer structure, target binding, and pharmacokinetics is essential.
• Continued research is vital for realizing the full clinical potential of aptamers.