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Adapting 3' Rapid Amplification of CDNA Ends to Map Transcripts in Cancer
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Cloning full-length transcripts and transcript variants using 5' and 3' RACE.

Lita A Freeman1

  • 1Cardiovascular & Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA.

Methods in Molecular Biology (Clifton, N.J.)
|August 6, 2013
PubMed
Summary
This summary is machine-generated.

This study introduces the SMARTer RACE technology for efficiently cloning full-length gene cDNAs. This method accurately captures 5' and 3' ends, aiding in gene function and variant analysis.

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Area of Science:

  • Molecular Biology
  • Genetics
  • Biotechnology

Background:

  • Characterizing gene function requires cloning full-length cDNA, which is often challenging.
  • Obtaining accurate 5' to 3' sequences of gene transcripts is difficult with existing methods.

Purpose of the Study:

  • To describe a novel reverse-transcriptase-based method for obtaining full-length cDNAs.
  • To enable efficient cloning and sequencing of complete gene transcripts and their variants.

Main Methods:

  • Utilizes the SMARTer (Switching Mechanism At RNA Termini) RACE technology.
  • Employs a modified MMLV-reverse transcriptase with terminal transferase activity to synthesize cDNA.
  • Incorporates a sequence-tagged oligonucleotide that anneals to a tail added by the reverse transcriptase for PCR amplification.

Main Results:

  • Successfully obtains full-length cDNAs, including 5' and 3' untranslated regions.
  • Enhances the capture of true transcript 5' ends, especially with high-quality RNA.
  • Facilitates the detection of transcript variants like alternative splicing and polyadenylation.

Conclusions:

  • SMARTer RACE technology provides an efficient method for full-length cDNA cloning.
  • This technique is valuable for characterizing gene function, regulation, and transcript diversity.
  • Enables comprehensive sequence analysis of regulatory regions and transcript isoforms.