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SCON-a Short Conditional intrON for conditional knockout with one-step zygote injection.

Szu-Hsien Sam Wu1,2, Heetak Lee3,4, Réka Szép-Bakonyi3

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Summary

We developed a new tool, Short Conditional intrON (SCON), for quickly creating conditional alleles. This method simplifies generating conditional alleles in mice using a single-step zygote injection process.

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Area of Science:

  • Molecular Biology
  • Genetics
  • Gene Editing Technologies

Background:

  • Generating conditional alleles for genetic research is complex and time-consuming.
  • Existing CRISPR-based methods for creating conditional alleles present challenges in efficiency and simplicity.

Purpose of the Study:

  • To introduce a novel, efficient method for the rapid generation of conditional alleles.
  • To demonstrate the utility of the Short Conditional intrON (SCON) system in vertebrate species, particularly in mouse models.

Main Methods:

  • Development and application of the Short Conditional intrON (SCON) system, a 189 bp DNA element.
  • Utilizing SCON for one-step zygote injection to generate conditional alleles.
  • Validation of SCON in generating multiple mouse lines across different laboratories.

Main Results:

  • Successfully generated 13 Short Conditional intrON (SCON) mouse lines using a single-step zygote injection protocol.
  • Demonstrated the conditional intronic function of SCON across various vertebrate species.
  • Confirmed that target insertion with SCON is as straightforward as CRISPR/Cas9-mediated gene tagging.

Conclusions:

  • The Short Conditional intrON (SCON) system offers a rapid and simplified approach to generating conditional alleles.
  • SCON is a versatile tool applicable in diverse vertebrate species, streamlining genetic engineering workflows.
  • This method significantly reduces the complexity and time required for creating conditional alleles, facilitating genetic research.