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Related Concept Videos

Reporter Genes02:11

Reporter Genes

Reporter genes are a type of protein-coding gene that are often tagged to a gene of interest. Once inside a target cell, reporter genes usually produce visually identifiable characteristics like fluorescence and luminescence when expressed along with the gene of interest. Thus, reporter genes “report” the presence or absence of genes of interest in an organism, determine the gene expression pattern, or track the physical location of a DNA segment or protein in the cell.
Commonly used reporter...

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Transient Expression of Foreign Genes in Insect Cells (sf9) for Protein Functional Assay
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Comparative analysis of binary expression systems for directed gene expression in transgenic insects.

Ivana Viktorinová1, Ernst A Wimmer

  • 1Department of Genetics, University of Bayreuth, Universitätsstrasse 30 NW I, 95447 Bayreuth, Germany.

Insect Biochemistry and Molecular Biology
|February 14, 2007
PubMed
Summary

This study compared binary gene expression systems in Drosophila melanogaster, finding yeast-derived GAL4/UAS more effective than bacterial systems. These findings aid functional gene analysis in diverse insect species.

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Area of Science:

  • Molecular Biology
  • Genetics
  • Entomology

Background:

  • Binary expression systems are crucial for functional gene analysis, enabling gene over- or misexpression studies.
  • Applying these systems across diverse organisms can unlock research into biological problems not feasible in model organisms.

Purpose of the Study:

  • To quantitatively compare the effectiveness of diverse binary expression systems.
  • To develop transferable constructs for evaluating gene expression systems in non-model insects.

Main Methods:

  • Utilized a kinetic approach to compare GAL4/UAS, LexA/(LL)(4), and tetracycline-controlled tTA/TRE systems.
  • Employed piggyBac-based transposon vectors and the 3xP3 promoter for construct delivery.

Main Results:

  • Demonstrated that GAL4/UAS systems exhibit higher responder gene activation efficiency in Drosophila melanogaster compared to LexA/(LL)(4) and tTA/TRE systems.
  • Validated the effectiveness of the developed constructs for comparative analysis.

Conclusions:

  • The GAL4/UAS system is a highly effective binary expression tool in Drosophila.
  • The developed constructs and methodology are transferable for evaluating binary expression systems in various non-model insect species, advancing functional gene analysis.