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Related Experiment Video

Updated: May 25, 2026

Micromanipulation of Gene Expression in the Adult Zebrafish Brain Using Cerebroventricular Microinjection of Morpholino Oligonucleotides
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Micromanipulation of Gene Expression in the Adult Zebrafish Brain Using Cerebroventricular Microinjection of Morpholino Oligonucleotides

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MicroRNAs control neurobehavioral development and function in zebrafish.

Tamara L Tal1, Jill A Franzosa, Susan C Tilton

  • 1Department of Environmental and Molecular Toxicology, Environmental Health Sciences Center, Oregon State University, 28645 East HWY 34, Corvallis, OR 97333, USA.

FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology
|January 19, 2012
PubMed
Summary
This summary is machine-generated.

MicroRNAs (miRNAs) are crucial for brain development. This study shows that ethanol exposure disrupts brain development and neurobehavior in zebrafish, highlighting miRNAs

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Area of Science:

  • Developmental Neuroscience
  • Molecular Biology
  • Behavioral Genetics

Background:

  • MicroRNAs (miRNAs) are known regulators of neurodevelopmental processes.
  • Their specific role in developmental neurobehavior remains largely undefined.
  • Ethanol exposure during development can disrupt brain morphogenesis.

Purpose of the Study:

  • To investigate the role of miRNAs in developmental neurobehavior.
  • To determine the impact of ethanol-induced brain morphogenesis disruption on neurobehavior.
  • To identify specific miRNAs involved in neurobehavioral and skeletal development.

Main Methods:

  • Zebrafish model system for developmental neurotoxicity studies.
  • Gene expression profiling (mRNA and miRNA) in ethanol-exposed embryos.
  • In vivo miRNA knockdown experiments and behavioral analyses.
  • Craniofacial skeletal structural analysis in adult zebrafish.

Main Results:

  • Ethanol exposure caused persistent hyperactivity and swimming aberrations in zebrafish.
  • Widespread changes in mRNA and miRNA abundance were observed post-ethanol exposure.
  • Knockdown of miR-9/9* or miR-153c mimicked ethanol's effects on behavior.
  • miR-153c repression impacted craniofacial skeletal development.

Conclusions:

  • MicroRNAs play an integral role in establishing vertebrate neurobehavioral systems.
  • Developmental ethanol exposure disrupts neurobehavior via miRNA dysregulation.
  • Specific miRNAs are critical for both neurobehavioral and skeletal development.