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Related Experiment Videos

Non-antisense cellular responses to oligonucleotides.

Alain Anselmet1, Ebrahim Mayat, Stefan Wietek

  • 1CNRS UMR 8544, Laboratoire de Neurobiologie, Ecole Normale Supérieure, Paris, France. anselmet@biologie.ens.fr

FEBS Letters
|January 22, 2002
PubMed
Summary
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Oligonucleotides can trigger cellular responses beyond antisense effects, influencing cell adhesion and aggregation. These findings are crucial for interpreting antisense experiment results accurately.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Biochemistry

Background:

  • Oligonucleotides are known for antisense mechanisms, but other cellular effects are being discovered.
  • Understanding non-antisense oligonucleotide functions is crucial for research.
  • Cellular responses to oligonucleotides require further investigation.

Purpose of the Study:

  • To investigate cellular responses induced by oligonucleotides beyond protein synthesis inhibition.
  • To explore the mechanisms behind oligonucleotide-induced cell aggregation and neurite retraction.
  • To assess the impact of oligonucleotide structure on cellular effects.

Main Methods:

  • Treatment of chicken retinal cells with various oligonucleotide structures (double-stranded, G-quartet, ribo-, deoxy-, phosphodiester, phosphorothioated).

Related Experiment Videos

  • Observation of neurite retraction and cell aggregation.
  • Assessment of cellular toxicity and reversibility of effects.
  • Investigation of intracellular events and interaction with integrins.
  • Induction of platelet aggregation by a subset of oligonucleotides.

    • Main Results:

    • Oligonucleotides, particularly those with double-stranded or G-quartet structures, induce neurite retraction and cell aggregation in chicken retinal cells within 10-20 hours.
    • These effects are reversible, non-toxic, require internalization, and can be mimicked by RGDS peptide treatment.
    • Oligonucleotides appear to modulate integrin adhesive properties, suggesting intracellular signaling cascades.
    • A subset of oligonucleotides also induced platelet aggregation via membrane receptor interaction.

    Conclusions:

    • Oligonucleotides can elicit significant cellular responses independent of antisense activity, impacting cell adhesion and aggregation.
    • The structural characteristics of oligonucleotides influence their cellular effects.
    • These non-antisense effects are critical considerations for the design and interpretation of oligonucleotide-based experiments, including antisense therapies.