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Related Experiment Videos

From deep sequencing to actual clones.

Sara D'Angelo1, Sandeep Kumar2, Leslie Naranjo3

  • 1New Mexico Consortium, Los Alamos, NM, USA amb@lanl.gov sdangelo@lanl.gov.

Protein Engineering, Design & Selection : PEDS
|September 4, 2014
PubMed
Summary

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Deep sequencing identifies enriched clones from in vitro display libraries, but isolating them is difficult. A new inverse PCR method rapidly and reliably isolates these selected DNA clones for functional testing.

Area of Science:

  • Molecular Biology
  • Biotechnology
  • Immunology

Background:

  • Deep sequencing is crucial for analyzing enriched clones from in vitro display selections.
  • Current methods for isolating these DNA clones are laborious and time-consuming, hindering functional testing.

Purpose of the Study:

  • To develop a rapid and simple method for isolating DNA clones identified by deep sequencing from in vitro display libraries.
  • To improve the efficiency and success rate of clone isolation for subsequent functional analysis.

Main Methods:

  • An inverse PCR-based strategy was employed for clone isolation.
  • The method was demonstrated using antibody gene isolation from phage and yeast display selections.
  • The process was optimized for speed and reduced PCR steps.
Keywords:
antibodydeep sequencinginverse PCRphage displayyeast display

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Main Results:

  • The inverse PCR method successfully isolated DNA clones in a single day, significantly faster than traditional methods.
  • A 100% amplification success rate was achieved for clones present at frequencies as low as 0.5%.
  • The method enables isolation of full-length clones even from incomplete sequence data and simplifies subcloning.

Conclusions:

  • This inverse PCR approach provides a powerful and efficient solution for isolating DNA clones identified via deep sequencing.
  • The method enhances the ability to recover rare but functional clones, expanding screening possibilities.
  • The technique is broadly applicable to various in vitro display libraries with unique sequence signatures.