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Quantitative Real-Time PCR for Circular RNA Detection and Analysis.

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Methods in Molecular Biology (Clifton, N.J.)
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Circular RNAs (circRNAs) are key regulatory noncoding RNAs. Researchers use quantitative real-time PCR with divergent primers to study circRNA expression and function in gene regulation.

Keywords:
Circular RNADivergent primerRNase Rq-RT PCR

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Area of Science:

  • Genomics
  • Molecular Biology
  • RNA Biology

Background:

  • While only 2% of the human genome codes for proteins, over 75% is noncoding and plays vital regulatory roles.
  • Noncoding RNAs, including microRNAs (miRNAs), small nuclear RNAs (snRNAs), small nucleolar RNAs (snoRNAs), transfer RNAs (tRNAs), and circular RNAs (circRNAs), are crucial for gene regulation.
  • Circular RNAs (circRNAs) represent a novel class of regulatory noncoding RNAs with significant gene regulatory functions.

Purpose of the Study:

  • To highlight the importance of noncoding RNAs, particularly circRNAs, in eukaryotic gene regulation.
  • To explain the mechanisms by which circRNAs exert their regulatory roles, such as acting as miRNA or RNA-binding protein sponges.
  • To introduce the quantitative real-time PCR method using divergent primers for circRNA expression analysis.

Main Methods:

  • Quantitative real-time PCR (qRT-PCR) is employed for the detection and quantification of circRNA expression.
  • Divergent primers are specifically utilized in qRT-PCR to accurately identify and measure circular RNA molecules.
  • This method allows for precise assessment of circRNA abundance in biological samples.

Main Results:

  • Circular RNAs function as potent regulators within the complex gene regulatory network.
  • They can effectively sequester miRNAs and RNA-binding proteins, thereby modulating gene expression.
  • The application of qRT-PCR with divergent primers enables reliable measurement of circRNA expression levels.

Conclusions:

  • Circular RNAs are integral components of the eukaryotic regulatory landscape.
  • Their ability to act as molecular sponges underscores their functional significance in gene regulation.
  • Quantitative real-time PCR with divergent primers is a validated method for studying circRNA expression patterns.