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Blocking Zebrafish MicroRNAs with Morpholinos.

Alex Sutton Flynt1, Mahesh Rao2, James G Patton3

  • 1Department of Biological Sciences, University of Southern Mississippi, Hattiesburg, MS, USA.

Methods in Molecular Biology (Clifton, N.J.)
|April 2, 2017
PubMed
Summary
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Antisense morpholino oligonucleotides offer a rapid method to inhibit gene expression in zebrafish, particularly for microRNAs (miRNAs) with genetic redundancy. This technique is valuable for developmental and retinal research when CRISPR/Cas9 is less effective.

Area of Science:

  • Developmental Biology
  • Molecular Biology
  • Genetics

Background:

  • Antisense morpholino oligonucleotides are established tools for inhibiting mRNA function in zebrafish via splicing or translation blocking.
  • CRISPR/Cas9 genome editing is advancing, but morpholinos remain crucial for rapid gene knockdown, especially with complex gene families.
  • MicroRNAs (miRNAs), small noncoding RNAs often in gene families, exhibit genetic redundancy and can be challenging to target with CRISPR/Cas9 due to their size.

Purpose of the Study:

  • To present the rationale, background, and methods for inhibiting miRNA function using antisense morpholinos in zebrafish.
  • To highlight the utility of morpholinos for targeting miRNAs during early development and in the adult retina.

Main Methods:

  • Utilizing antisense morpholino oligonucleotides to inhibit specific miRNA function.
Keywords:
DevelopmentEmbryoMorpholinoRetinaZebrafishmiRNA

Related Experiment Videos

  • Applying morpholino-based strategies in zebrafish models for early developmental and adult retinal studies.

    • Main Results:

    • Demonstrated the effectiveness of morpholinos in inhibiting miRNA function, overcoming challenges posed by genetic redundancy.
    • Showcased the applicability of morpholino technology for studying miRNA roles in zebrafish development and retinal biology.

    Conclusions:

    • Antisense morpholinos provide a powerful and accessible strategy for inhibiting miRNA function in zebrafish.
    • Morpholino-based approaches are particularly advantageous for studying gene families with redundancy and for targeting small RNAs like miRNAs.