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Using DIPA-CRISPR for simple and efficient endogenous protein tagging in insects.

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|February 5, 2026
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Summary

Researchers developed a new CRISPR-Cas9 method to create functional fusion proteins in the German cockroach (Blattella germanica). This technique enables live visualization of gene expression, aiding pest management research.

Keywords:
Blattella germanicaCP: biotechnologyCas9DIPA-CRISPRHDRdistal-lessfluorescent proteinfusion proteinhemimetabolous insectknockinmicroinjection

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Area of Science:

  • Genetics and Genomics
  • Molecular Biology
  • Entomology

Background:

  • CRISPR-Cas9 gene editing is crucial for studying gene expression and protein localization.
  • Creating in-frame knockins for functional fusion proteins is challenging in hemimetabolan insects like the German cockroach (Blattella germanica).

Purpose of the Study:

  • To develop a streamlined gene-editing strategy for generating functional fusion proteins in Blattella germanica.
  • To enable live visualization of protein distribution for ecological, developmental, and pest-management research.

Main Methods:

  • Utilized direct parental CRISPR combined with homology-directed repair donor constructs.
  • Integrated the mCherry reporter gene in-frame with the distal-less gene in B. germanica.

Main Results:

  • Successfully generated a functional and heritable Distal-less-mCherry fusion protein.
  • Enabled live visualization of Distal-less protein localization in developing appendages and the nervous system.
  • Demonstrated targeted integration at the distal-less locus.

Conclusions:

  • Presented a simple, robust methodology for generating fusion proteins in non-model insects.
  • This approach provides a valuable molecular tool for B. germanica research.
  • Facilitates advancements in understanding gene function and developing pest control strategies.