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Sequence-specific and Selective Recognition of Double-stranded RNAs over Single-stranded RNAs by Chemically Modified Peptide Nucleic Acids
Published on: September 21, 2017
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Nucleic acids therapeutics using PolyPurine Reverse Hoogsteen hairpins
Véronique Noé1, Eva Aubets1, Alex J Félix1
1Department of Biochemistry and Physiology, School of Pharmacy and Food Sciences, & IN2UB, University of Barcelona, 08028 Barcelona, Spain.
Biochemical Pharmacology
|December 18, 2020
Summary
PolyPurine Reverse Hoogsteen hairpins (PPRHs) are novel DNA structures with diverse biomedical applications. These stable, non-immunogenic molecules show promise in gene silencing, mutation correction, and biosensing for cancer and infectious diseases.
Area of Science:
- Molecular Biology
- Biotechnology
- Genetics
Background:
- PolyPurine Reverse Hoogsteen hairpins (PPRHs) are DNA structures formed by intramolecular reverse Hoogsteen bonds.
- They bind to dsDNA via Watson:Crick bonds, forming triplexes and displacing a DNA strand.
Purpose of the Study:
- To explore the diverse biomedical applications of PPRHs.
- To evaluate their potential in gene silencing, DNA repair, and biosensing.
Main Methods:
- In vitro and in vivo gene silencing studies targeting cancer-related genes (e.g., survivin, BCL-2, C-MYC).
- Investigating PPRHs for DNA mutation correction in cell lines.
- Incorporating PPRHs into biosensors for diagnostic applications.
Main Results:
- PPRHs demonstrated efficacy in silencing genes involved in cancer, immunotherapy, and replication stress.
- Successful correction of point mutations in CHO cell lines.
- PPRHs utilized in biosensors for DNA methylation and pathogen detection.
Conclusions:
- PPRHs are stable, non-toxic, and versatile biotechnological tools.
- They offer a wide range of economical biomedical applications, including gene therapy and diagnostics.
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