Spotlight on G-Quadruplexes: From Structure and Modulation to Physiological and Pathological Roles

Area of Science:

• Molecular Biology
• Genetics
• Biochemistry

Background:

• G-quadruplexes (G4s) are non-canonical secondary structures formed by guanine-rich nucleic acids.
• Extensive research has elucidated their structure, stability, localization, and biological significance.
• G4s are implicated in fundamental cellular processes including gene expression, RNA biogenesis, DNA replication, and genome stability.

Purpose of the Study:

• To provide a comprehensive review of G-quadruplex biology.
• To synthesize findings from seminal and recent studies on G4s.
• To discuss the role of G4s in various pathologies, particularly cancer, and their potential as drug targets.

Main Methods:

• Review of existing literature, combining seminal works with recent experimental evidence.
• Discussion of common methodologies used for G-quadruplex detection and characterization.
• Analysis of experimental data to understand G4 structure, stability, and biological functions.

Main Results:

• G-quadruplexes play significant roles in diverse biological pathways across species.
• Accumulating evidence links G4s to cancer biology and other diseases.
• G4 structures are recognized as potential targets for therapeutic intervention.

Conclusions:

• G-quadruplexes are vital regulators of nucleic acid function with implications in health and disease.
• The study of G4s offers promising avenues for drug development, especially in oncology.
• Understanding G4 methodologies is crucial for interpreting experimental findings in this rapidly evolving field.