Aptamers to explore prion protein interactions with nucleic acids.

Area of Science:

• Biochemistry
• Molecular Biology
• Neuroscience

Background:

• Prion diseases are linked to misfolded prion protein (PrP) isoforms.
• The prion concept extends to yeast models, influencing self-perpetuating phenotypes.
• The exact nature of the prion agent and PrP function remain areas of active investigation.

Purpose of the Study:

• To identify nucleic acid ligands that bind to the prion protein (PrP).
• To explore the potential of these interactions for developing diagnostic tools for prion diseases.
• To elucidate the physiological and pathological roles of PrP-nucleic acid interactions and PrP transconformation.

Main Methods:

• In vitro nucleic acid evolution techniques were employed.
• Selection and characterization of RNA and DNA molecules that bind to PrP.
• Analysis of PrP-nucleic acid complexes to understand binding interfaces and functional implications.

Main Results:

• Identification of specific RNA and DNA sequences with high affinity for PrP.
• Demonstration of PrP binding to nucleic acids in vitro, suggesting a potential role in its function or dysfunction.
• Insights into the structural and functional consequences of PrP-nucleic acid interactions.

Conclusions:

• Nucleic acids represent potential binding partners for PrP, influencing its conformation and function.
• The identified PrP-binding nucleic acids offer avenues for novel diagnostic and therapeutic strategies for prion diseases.
• Further research into PrP-nucleic acid interactions is crucial for understanding prion pathogenesis and developing effective interventions.