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Tips for Successful lncRNA Knockdown Using Gapmers.

Kim A Lennox1, Mark A Behlke2

  • 1Integrated DNA Technologies, Inc., Coralville, IA, USA. klennox@idtdna.com.

Methods in Molecular Biology (Clifton, N.J.)
|September 1, 2020
PubMed
Summary
This summary is machine-generated.

This study demonstrates effective knockdown of the long noncoding RNA MALAT1 using gapmer antisense oligonucleotides (ASOs) in HeLa cells. This method validates functional characterization of lncRNAs and offers potential therapeutic strategies.

Keywords:
ASOsAntisenseChemical modificationsGapmerKnockdownLong noncoding RNAs (lncRNAs)Oligonucleotides

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Area of Science:

  • Molecular Biology
  • Genetics
  • Biochemistry

Background:

  • Long noncoding RNAs (lncRNAs) are a class of RNA molecules with diverse regulatory and structural functions within cells.
  • Despite the identification of numerous human lncRNAs, the functions of most remain uncharacterized.
  • RNA knockdown techniques are crucial for elucidating lncRNA functions and hold therapeutic potential.

Purpose of the Study:

  • To describe a protocol for functionally characterizing lncRNAs using validated gapmer antisense oligonucleotides (ASOs).
  • To demonstrate the knockdown of the nuclear-retained lncRNA MALAT1, which is frequently upregulated in cancer cells.
  • To establish a method for assessing RNA knockdown efficiency via RT-qPCR.

Main Methods:

  • Utilized cationic lipid transfection to deliver gapmer ASOs into HeLa cells.
  • Isolated total RNA from transfected cells.
  • Quantified RNA knockdown levels using reverse transcription quantitative polymerase chain reaction (RT-qPCR).

Main Results:

  • Successfully achieved knockdown of the MALAT1 lncRNA in HeLa cells using gapmer ASOs.
  • Validated the efficiency of the ASO-mediated knockdown through RT-qPCR analysis.
  • Established a reproducible protocol for lncRNA functional characterization.

Conclusions:

  • Gapmer antisense oligonucleotides provide a reliable method for targeted lncRNA knockdown.
  • This protocol facilitates the functional characterization of lncRNAs like MALAT1.
  • The described approach has implications for understanding lncRNA roles in diseases such as cancer and for developing RNA-based therapeutics.