Design of Modular G-quadruplex Ligands.

Area of Science:

• Biochemistry
• Medicinal Chemistry
• Molecular Biology

Background:

• Guanine-rich nucleic acids form G-quadruplexes (G4), crucial for cellular regulation.
• G4 structures are promising targets for anticancer drug development.
• G4 ligands are classified into fused polycyclic systems, macrocycles, and modular aromatic compounds.

Purpose of the Study:

• To review the design rationale of modular G4 ligands.
• To correlate structural features with G4 binding and biological activity.
• To highlight structure-G4 interaction relationships for improved ligand development.

Main Methods:

• Comprehensive review of existing G4 ligand designs.
• Analysis of biochemical and biological data for various ligand families.
• Focus on structure-activity relationships, particularly ligand shape.

Main Results:

• Modular G4 ligands offer enhanced drug-like properties and selectivity.
• Ligand shape is identified as the primary determinant of G4 stabilization.
• Key structure-G4 interaction insights are derived from extensive data analysis.

Conclusions:

• Modular G4 ligands represent a promising strategy for developing selective anticancer therapeutics.
• Understanding ligand shape is critical for designing effective G4 stabilizers.
• This review provides a foundation for developing novel G4 ligands as therapeutics or research probes.