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Updated: Dec 27, 2025

Sequence-specific and Selective Recognition of Double-stranded RNAs over Single-stranded RNAs by Chemically Modified Peptide Nucleic Acids
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Sequence-specific and Selective Recognition of Double-stranded RNAs over Single-stranded RNAs by Chemically Modified Peptide Nucleic Acids

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Peptide Nucleic Acids for MicroRNA Targeting

Roberto Gambari1, Jessica Gasparello2, Enrica Fabbri2

  • 1Department of Life Sciences and Biotechnology, Ferrara University, Ferrara, Italy. gam@unife.it.

Methods in Molecular Biology (Clifton, N.J.)
|February 24, 2020
PubMed

Insights

This study explores peptide nucleic acids (PNAs) as potential miRNA therapeutics for cystic fibrosis. Methods were developed to test PNA activity against miR-145-5p, a microRNA implicated in the disease.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Pharmacology

Background:

  • MicroRNAs (miRNAs) play a crucial role in human diseases.
  • Pharmacological modulation of miRNA activity is a promising therapeutic strategy.
  • Rare diseases represent a key area for developing novel miRNA therapeutics.

Purpose of the Study:

  • To describe methods for evaluating the efficacy of peptide nucleic acids (PNAs) targeting microRNAs involved in cystic fibrosis.
  • To utilize miR-145-5p and its target, cystic fibrosis transmembrane conductance regulator (CFTR) mRNA, as a model system.
  • To present methods for assessing PNA effects on miR-145-5p activity.

Main Methods:

  • Development and application of assays to determine PNA activity against specific microRNAs.
  • Utilizing a human lung epithelial Calu-3 cell line as a cellular model.
  • Investigating the interaction between PNAs, miR-145-5p, and CFTR mRNA.

Main Results:

  • Established methods for assessing PNA efficacy in modulating miRNA activity.
  • Demonstrated the utility of the Calu-3 cell line for studying miRNA therapeutics.
  • Provided data on the effects of PNAs targeting miR-145-5p.

Conclusions:

  • Peptide nucleic acids show potential as miRNA therapeutics for cystic fibrosis.
  • The described methods are valuable for evaluating PNA-based drug candidates.
  • Further research into PNA targeting of disease-related microRNAs is warranted.
Keywords:
Cystic fibrosisMiRNA therapeuticsMicroRNAPeptide nucleic acids

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