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Antisense Technologies: Improvement Through Novel Chemical Modifications

Author: Jens Kurreck

Field: Biochemistry, Molecular Biology

Document Content:

This review article delves into the advancements in antisense technologies, focusing on novel chemical modifications that enhance their efficacy and therapeutic potential. Antisense agents are explored as tools to inhibit gene expression, with applications in functional genomics, target validation, and therapeutic interventions. The article distinguishes between various antisense strategies, including antisense oligonucleotides (AS-ONs), ribozymes, and RNA interference (RNAi) induced by small interfering RNA (siRNA). It highlights the challenges faced by early antisense approaches, such as low target affinity and toxic side-effects, and details the progress made through “second generation” and “third generation” modified nucleotides. These modifications aim to improve serum stability, target affinity, and reduce toxicity, paving the way for more effective and safer gene silencing strategies. The review also touches upon the crucial aspect of cellular uptake and the ongoing clinical trials for various antisense-based therapeutics.

Detailed Table of Contents:

  • Introduction
  • Antisense-oligonucleotides
  • ‘First generation’ antisense-oligonucleotides
  • ‘Second generation’ antisense-oligonucleotides
  • ‘Third generation’ antisense-oligonucleotides
  • Ribozymes
  • RNA interference
  • Summary
  • Acknowledgements
  • References