Highly sensitive detection of telomerase using a telomere-triggered isothermal exponential amplification-based...

Area of Science:

• Biochemistry
• Molecular Biology
• Nanotechnology

Background:

• Telomerase is a key enzyme in cancer cell proliferation and immortality.
• Sensitive detection of telomerase is crucial for early cancer diagnosis and treatment monitoring.
• Existing detection methods often lack the sensitivity for single-cell analysis.

Purpose of the Study:

• To develop a highly sensitive DNAzyme biosensor for detecting telomerase activity.
• To enable telomerase detection at the single-cell level.
• To provide a platform for screening telomerase inhibitors for anticancer drug development.

Main Methods:

• Development of a telomere-triggered isothermal exponential amplification reaction.
• Integration of DNAzyme catalytic activity for signal amplification.
• Application of the biosensor for detecting telomerase in cancer cells.

Main Results:

• The developed biosensor achieved highly sensitive detection of telomerase.
• Successful detection of telomerase activity in individual cancer cells was demonstrated.
• The biosensor platform proved effective for screening potential telomerase inhibitors.

Conclusions:

• A novel telomere-triggered DNAzyme biosensor offers sensitive, single-cell level telomerase detection.
• This biosensor is a valuable tool for cancer research and anticancer drug discovery.
• The technology facilitates the identification of novel therapeutic strategies targeting telomerase.