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Related Experiment Videos

Efficient second-strand cDNA synthesis using T7 DNA polymerase

M Bodescot1, O Brison

  • 1Laboratoire d'Oncologie Moléculaire, CNRS URA 1158, Institut Gustave Roussy, Villejuif, France.

DNA and Cell Biology
|September 1, 1994
PubMed
Summary

This study introduces a novel second-strand cDNA synthesis method using T7 DNA polymerase. This efficient technique enables high-yield production of full-length complementary DNA (cDNA) clones for molecular biology applications.

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Area of Science:

  • Molecular Biology
  • Biotechnology
  • Genetics

Background:

  • Complementary DNA (cDNA) synthesis is crucial for gene cloning and expression studies.
  • Existing methods for second-strand cDNA synthesis can be inefficient or yield incomplete clones.
  • Optimizing cDNA synthesis is essential for accurate molecular analysis.

Purpose of the Study:

  • To develop a highly efficient second-strand cDNA synthesis method.
  • To leverage the enzymatic properties of T7 DNA polymerase for improved cDNA production.
  • To facilitate the cloning of full-length cDNA molecules.

Main Methods:

  • First-strand cDNA synthesis using reverse transcriptase and oligo(dT) primer.
  • mRNA template hydrolysis followed by poly(dT) tail addition using terminal transferase.

Related Experiment Videos

  • Second-strand cDNA synthesis primed by oligo(dA) utilizing T7 DNA polymerase's processivity and 3' exonuclease activity.
  • Analysis of cloned c-myc DNA size distribution via Southern blot and clone analysis.

    • Main Results:

    • The method effectively utilizes T7 DNA polymerase's high processivity and 3' exonuclease activity.
    • A protected primer region ensures efficient second-strand synthesis.
    • High efficiency in obtaining full-length cDNA clones was demonstrated.
    • Analysis confirmed the production of full-length cDNA clones, exemplified by c-myc.

    Conclusions:

    • The presented method offers a robust and efficient approach for second-strand cDNA synthesis.
    • This technique significantly enhances the yield of full-length cDNA clones.
    • The method is suitable for applications requiring high-efficiency cDNA cloning, such as gene expression studies.