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An Efficient Strategy for Generating Tissue-specific Binary Transcription Systems in Drosophila by Genome Editing
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Precise genome engineering in Drosophila using prime editing.

Justin A Bosch1, Gabriel Birchak2, Norbert Perrimon1,3

  • 1Department of Genetics, Blavatnik Institute, Harvard Medical School, Boston, MA 02115; jabosch@hms.harvard.edu perrimon@receptor.med.harvard.edu.

Proceedings of the National Academy of Sciences of the United States of America
|January 14, 2021
PubMed
Summary
This summary is machine-generated.

Prime editing enables precise gene editing in Drosophila melanogaster without double-strand breaks. This powerful tool allows for studying gene function through targeted mutations and efficient germline transmission.

Keywords:
CRISPRDrosophilagenome engineeringpegRNAprime editing

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Area of Science:

  • Molecular Biology
  • Genetics
  • Developmental Biology

Background:

  • Precise genome editing is essential for studying gene function in model organisms.
  • Prime editing offers a method for targeted DNA modifications without requiring double-strand breaks or donor DNA, minimizing off-target effects.

Purpose of the Study:

  • To adapt and optimize prime editing technology for the model organism Drosophila melanogaster.
  • To demonstrate the efficacy of prime editing for introducing precise genetic modifications in Drosophila.

Main Methods:

  • Prime editing components were expressed in cultured Drosophila cells and somatic cells of transgenic flies.
  • Premature stop codons were precisely introduced into the ebony, white, and forked genes.
  • Editing was restricted to germ cells to assess germline transmission efficiency.

Main Results:

  • Optimal conditions for prime editing in Drosophila were successfully developed.
  • Precise premature stop codons were introduced into three visible marker genes.
  • Efficient germline transmission of a precise edit in the ebony gene was achieved in 36% of progeny.

Conclusions:

  • Prime editing is a versatile and effective tool for genetic research in Drosophila melanogaster.
  • This technology facilitates the study of gene function through precise point mutations, deletions, and epitope tagging.