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Related Experiment Video

Updated: Jan 19, 2026

Light Sheet-based Fluorescence Microscopy of Living or Fixed and Stained Tribolium castaneum Embryos
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The Red Flour Beetle as Model for Comparative Neural Development: Genome Editing to Mark Neural Cells in Tribolium

Max S Farnworth1,2, Kolja N Eckermann3,4, Hassan M M Ahmed4,5

  • 1Department of Evolutionary Developmental Genetics, Johann-Friedrich-Blumenbach Institute, GZMB, University of Göttingen, Göttingen, Germany. m.farnworth@posteo.de.

Methods in Molecular Biology (Clifton, N.J.)
|September 26, 2019
PubMed
Summary

Scientists can now create specific transgenic lines in Tribolium castaneum using CRISPR/Cas technology. Two methods for generating fluorescent protein neuron markers are presented, each with distinct advantages for research applications.

Keywords:
2A peptideBrain developmentCRISPR/Cas9Genome engineeringHDRNHEJNeural lineageTribolium

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Last Updated: Jan 19, 2026

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Area of Science:

  • Genetics and Molecular Biology
  • Developmental Biology
  • Neuroscience

Background:

  • CRISPR/Cas technology enables precise genetic modifications.
  • Generating transgenic lines is crucial for studying gene function and development.
  • Tribolium castaneum serves as a model organism for insect biology.

Purpose of the Study:

  • To present two distinct methods for generating transgenic lines in Tribolium castaneum for in vivo neural imaging.
  • To compare the efficiency and precision of homologous recombination versus enhancer trap methods for creating fluorescent reporter lines.
  • To provide a comprehensive guide for researchers aiming to create site-specific neural markers.

Main Methods:

  • Utilizing CRISPR/Cas for site-specific insertions in Tribolium castaneum.
  • Employing homologous recombination with 2A peptide for bicistronic mRNA expression.
  • Developing gene-specific enhancer traps as an alternative to homologous recombination.
  • Describing construct design, guide RNA selection, embryonic injection, and stock generation.

Main Results:

  • Two methods for generating fluorescent protein-marked neuron subsets were successfully established.
  • Homologous recombination yields lines where target and marker proteins are not fused and produced equally.
  • Enhancer traps offer a faster generation but less precise reflection of target gene expression.

Conclusions:

  • The choice between homologous recombination and enhancer trap methods depends on specific research goals.
  • Both methods facilitate in vivo imaging of neural cells and their development in Tribolium castaneum.
  • These techniques advance the study of neural development and function in a key insect model.