Solid phase synthesis of TyrT, a thymine-tyrosine conjugate with poly(A) RNA-binding ability

Area of Science:

• Chemical synthesis and characterization of novel biomolecules.
• Bioconjugation chemistry.
• Nucleic acid-drug interactions.

Background:

• Nucleobase-amino acid conjugates exhibit diverse biological activities.
• These conjugates can interact with nucleic acids, suggesting therapeutic potential.
• Poly(A) RNA is a potential target for anticancer drug development.

Purpose of the Study:

• To synthesize and characterize a novel nucleobase-amino acid conjugate, TyrT.
• To investigate the interaction between TyrT and poly(A) RNA.
• To elucidate the binding mode of TyrT to poly(A) RNA.

Main Methods:

• Synthesis and N-alpha amide bond formation of a l-tyrosine-thymine derivative (TyrT).
• Circular dichroism (CD) spectroscopy to study TyrT-poly(A) interaction.
• Scanning electron microscopy (SEM) to visualize morphological changes.
• Computational modeling to predict binding interactions.

Main Results:

• Successful synthesis and characterization of the TyrT conjugate.
• CD spectroscopy indicated TyrT binding to poly(A) RNA.
• SEM revealed morphological modifications upon TyrT-poly(A) complexation.
• Computational analysis suggested hydrophobic and stacking interactions between thymine and adenine rings.

Conclusions:

• The novel TyrT conjugate effectively binds to poly(A) RNA.
• The binding mechanism involves hydrophobic contacts and base-stacking interactions.
• TyrT demonstrates potential as a therapeutic agent targeting RNA in anticancer strategies.