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Post-SELEX combinatorial optimization of aptamers

B E Eaton1, L Gold, B J Hicke

  • 1NeXstar Pharmaceuticals, Inc., Boulder, CO 80301, USA.

Bioorganic & Medicinal Chemistry
|June 1, 1997
PubMed
Summary
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In vitro selection creates nucleic acid aptamers for protein targets. Post-SELEX modification and combinatorial screening systematically enhance aptamer binding affinity and properties.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Biotechnology

Background:

  • In vitro selection, such as SELEX (Systematic Evolution of Ligands by Exponential Enrichment), is a key method for discovering nucleic acid aptamers.
  • Aptamers are high-affinity ligands that bind to specific protein targets, with applications in diagnostics and therapeutics.
  • While aptamers exhibit strong binding, their properties can be further improved post-discovery.

Purpose of the Study:

  • To explore systematic approaches for optimizing aptamer properties.
  • To investigate the potential of post-SELEX modifications for enhancing aptamer performance.
  • To develop combinatorial screening methodologies for aptamer optimization.

Main Methods:

  • Utilizing in vitro selection techniques to isolate nucleic acid ligands.

Related Experiment Videos

  • Implementing post-SELEX modification strategies to refine aptamer characteristics.
  • Employing combinatorial screening for systematic aptamer optimization.

    • Main Results:

    • Demonstrated that post-SELEX modifications can significantly enhance aptamer binding affinity.
    • Showcased the effectiveness of combinatorial screening in optimizing aptamer properties.
    • Established a systematic approach for aptamer development.

    Conclusions:

    • Post-SELEX modification is a viable strategy for improving aptamer affinity and function.
    • Combinatorial screening offers a systematic and efficient method for aptamer optimization.
    • This systematic approach advances the development of high-performance aptamers for various applications.