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In vivo LNA™ microRNA Inhibitors

Niel M. Frandsen, Product Manager Highly specific and biologically stable LNA™-enhanced microRNA inhibitors for in vivo use.



Niels M. Frandsen, Ph.D., Product Manager Back
  • Effective and sequence-specific antisense in vivo inhibition of microRNAs
  • Superior serum stability and nuclease resistance
  • Low toxicity
  • Complete phosphorothioate backbone
  • Available with fluorescein-label or conjugated to cholesterol

Features

Exiqon uses empirically developed tools to design optimal LNA™ microRNA in vivo inhibitors.

Coverage

The in vivo microRNA inhibitors are provided with complete phosphorothioate backbones and are delivered dried down as Na+ salt ready to be dissolved in PBS. The inhibitors can be provided pre-labeled with fluorescein or conjugated to cholesterol. Synthesis scales ranging from 10-100 mg are available.

Effective microRNA inhibitors with low toxicity

LNA™ oligonucleotides have higher affinities for their targets than regular DNA or RNA based oligonucleotides. This means that short but highly sequence specific oligonucleotides can be used for in vivo knockdown experiments.


The high affinity of the LNA™-enhanced microRNA inhibitors makes them highly effective at physiological temperatures and when used in low concentrations, thereby minimizing potential secondary effects not related to the antisense activity of the microRNA inhibitor. In addition, LNA™ incorporation enhances serum and nuclease stability.


The LNA™ technology has been successfully applied in vivo, combining low concentrations of the microRNA inhibitor with high serum stability and low toxicity. Effective inhibition of microRNAs has been observed with concentrations of in vivo LNA™ microRNA Inhibitors as low as 10 mg/kg (ED50) bodyweight.


To learn more, please see the scientific publications listed in the right-hand menu.



Xavier Gidrol "...thanks to the LNA™ microRNA inhibitor screen, we have discovered several new miRNAs playing a major role in the regulation of the proliferation/differentiation balance in prostate cells."

Dr. Xavier Gidrol directs the Biomics Laboratory at the Institute of Life Science Research and Technologies in Grenoble, France. They use microfluidics, micromanufacturing and MEMS to study the impact of genetic and micro-environmental determinants on carcinogenesis, at the scale of a few or even single cells. Xavier has used minute cell microarrays to perform high throughput and high content screening with our human library of microRNA inhibitors in primary prostate cancer cells extracted from patients.



Amy Hansen "Previously, we had tried other inhibitor designs but these gave inconclusive results"

Amy Hansen is a Ph.D student at the University College London. She works in the Cancer Research UK Viral Oncology Group lead by Professor Chris Boshoff, Director of the UCL Cancer Institute.



"LNA microRNA antisense inhibitors are efficient and specific with long lasting effects"


Dr. Annick Harel-Bellan (AHB) is Directeur de Recherche at the Institut Andre Lwoff in Paris. She heads a group working on epigenetics and cancer (Laboratoire Epigenetique et Cancer). Dr. Anna Polesskaya (AP) is a senior scientist and longstanding member of this group

Read full story...


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