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Related Concept Videos

Reporter Genes02:11

Reporter Genes

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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.
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Co-Transfected Plasmids Enhance Transient Expression of Reporter Genes.

Shih-Yen Lo1,2, Chee-Hing Yang3, Yu-Ru Chan1

  • 1Department of Laboratory Medicine and Biotechnology, Tzu Chi University, Hualien 970, Taiwan.

Biotech (Basel (Switzerland))
|March 27, 2026
PubMed
Summary
This summary is machine-generated.

Co-transfecting plasmids significantly boost transient gene expression by increasing transcription, not translation. This finding offers insights for optimizing recombinant protein production in biotechnology applications.

Keywords:
Firefly luciferaseRenilla luciferaseco-transfectionenhanced gene expressionhistonesreporter genestransient transfection

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Area of Science:

  • Molecular Biology
  • Biotechnology
  • Cell Biology

Background:

  • Transient DNA transfection is crucial for studying gene function and protein production.
  • Competition for cellular resources during gene expression can skew results in co-transfection experiments.
  • Previous studies indicate potential biases in mammalian cell transfection data interpretation.

Purpose of the Study:

  • To investigate the effect of co-transfected plasmids on transient and stable gene expression.
  • To elucidate the mechanisms underlying the enhancement of transient gene expression by additional plasmid DNA.
  • To provide insights for improving recombinant gene expression in biotechnology.

Main Methods:

  • Co-transfection of various reporter genes in different cell types.
  • Analysis of transient and stable expression levels.
  • Investigation of transcription and translation regulation.
  • Dose-dependent treatment with Pracinostat (SB939), a histone deacetylase inhibitor.

Main Results:

  • Co-transfected plasmids markedly enhance transient, but not stable, reporter gene expression.
  • Enhancement occurs with simultaneous DNA co-delivery and is not cytokine-mediated.
  • Co-transfected plasmids upregulate reporter gene transcription, not translation, during transient expression.
  • Pracinostat (SB939) dose-dependently enhanced transient reporter gene expression.

Conclusions:

  • Co-transfection enhances transient gene expression, likely due to competition for DNA-interacting proteins like histones.
  • The observed enhancement is primarily transcriptional.
  • These findings can aid in optimizing transient gene expression for biotechnological applications, particularly recombinant protein production.