Human telomere RNA: a potential target for ligand recognition

Area of Science:

• Molecular Biology
• Genetics
• Biochemistry

Background:

• Telomeres protect chromosome ends, and their dysfunction is linked to aging and cancer.
• Telomeric repeat-containing RNA (TERRA) is transcribed from telomere DNA in mammalian cells.
• TERRA RNA plays a role in telomere regulation and protection.

Purpose of the Study:

• To review the structures and topologies of telomere RNA G-quadruplexes.
• To highlight recent advancements in the design of telomere RNA G-quadruplex ligands.
• To outline future research challenges in the field of TERRA G-quadruplexes.

Main Methods:

• Nuclear Magnetic Resonance (NMR) and X-ray crystallography have been used to determine human telomere RNA G-quadruplex structures.
• Light-switching probes were employed to detect G-quadruplex dimers of human telomere RNA in living cells.

Main Results:

• Human telomere RNA forms G-quadruplex structures.
• TERRA RNA exists as a G-quadruplex dimer within living cells.
• Significant progress has been made in understanding telomere RNA G-quadruplexes.

Conclusions:

• TERRA RNA G-quadruplexes are key structures in telomere biology.
• Further research into TERRA RNA G-quadruplexes and their ligands is essential for understanding and treating telomere-related diseases.
• Investigating TERRA RNA offers new insights into fundamental biological processes like aging and cancer.