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Related Experiment Videos

Enantio- and meso-oligodeoxyribonucleotides.

S Fujimori1, N Iwanami, K Shudo

  • 1Faculty of Pharmaceutical Science, University of Tokyo, Japan.

Nucleic Acids Symposium Series
|January 1, 1991
PubMed
Summary

Sugar-modified oligodeoxynucleotides demonstrate resistance to degradation. L-homooligomers and L/D-alternative oligomers show varied complex formation with complementary polymers, with alternative sequences offering enhanced stability.

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Nucleosides, nucleotides & nucleic acids·2011

Area of Science:

  • Oligonucleotide Chemistry
  • Biochemistry
  • Molecular Biology

Background:

  • Sugar-modified oligodeoxynucleotides represent novel nucleic acid analogs.
  • Understanding their stability and binding properties is crucial for potential applications.

Purpose of the Study:

  • To synthesize and characterize L-homooligomers and L/D-alternative oligomers.
  • To investigate the resistance of these modified oligonucleotides to enzymatic degradation.
  • To evaluate the binding interactions and complex stabilities with complementary natural homopolymers.

Main Methods:

  • Chemical synthesis of L-homooligomers (L-dA12, L-dT12) and a L/D-alternative oligomer ((L-dA-D-dA)6).
  • Assessment of resistance to phosphodiesterase degradation.
  • Analysis of complex formation with poly(dT) and poly(U) using techniques like hypochromicity measurements and stability assessments.

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Main Results:

  • Synthesized L-homooligomers and L/D-alternative oligomers exhibited significant resistance to phosphodiesterase degradation.
  • L-dA12 formed complexes with poly(dT) and poly(U) with varying stabilities.
  • L-dT12 showed minimal hypochromicity upon mixing with complementary natural homopolymers.
  • The L/D-alternative oligomer ((L-dA-D-dA)6) interacted with both poly(dT) and poly(U), forming complexes with increased stability compared to L-dA12.

Conclusions:

  • Sugar-modified oligodeoxynucleotides, including L-homooligomers and L/D-alternative sequences, possess enhanced resistance to enzymatic degradation.
  • The L/D-alternative oligomer demonstrates promising binding capabilities and improved complex stability with complementary nucleic acid strands.
  • These findings highlight the potential of modified oligonucleotides in nucleic acid-based applications.