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Methods for Improving Aptamer Binding Affinity.

Hijiri Hasegawa1, Nasa Savory2, Koichi Abe3

  • 1Department of Biotechnology and Life Science, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan. s149383s@st.go.tuat.ac.jp.

Molecules (Basel, Switzerland)
|April 5, 2016
PubMed
Summary
This summary is machine-generated.

This review details methods to enhance aptamer binding affinity, a crucial step for their therapeutic and diagnostic applications. Techniques include sequence optimization, hydrophobic modifications, and multivalent aptamer construction.

Keywords:
aptameraptamer sequencebinding affinitymultivalent bindingunnatural nucleotide

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Biotechnology

Background:

  • Aptamers are single-stranded oligonucleotides that bind specific biological targets.
  • Initial aptamer selection may yield low-affinity binders, necessitating further refinement.
  • Achieving high-affinity aptamers is crucial for their effective use in diagnostics and therapeutics.

Purpose of the Study:

  • To review and summarize various techniques for improving aptamer binding affinities.
  • To highlight strategies for enhancing aptamer efficacy in biological applications.

Main Methods:

  • Sequence optimization through in silico recombination and in vitro functional evaluation.
  • Introduction of hydrophobic moieties to expand aptamer-target interactions.
  • Construction of multivalent aptamers by linking distinct aptamers.
  • Optimization of multivalent construct scaffolds.

Main Results:

  • Sequence optimization and stabilization of aptamer conformations improve binding.
  • Hydrophobic modifications increase the diversity of aptamer-target interactions.
  • Multivalent aptamers and scaffold optimization significantly enhance binding affinity.

Conclusions:

  • Various strategies exist to refine aptamer binding affinities.
  • These methods expand the utility of aptamers in diverse biological applications.
  • Further research into aptamer optimization holds promise for advanced molecular tools.