MicroRNA Sensors Based on CRISPR/Cas12a Technologies: Evolution From Indirect to Direct Detection

Area of Science:

• Biotechnology and Biosensing
• Molecular Diagnostics
• Gene Editing Technologies

Background:

• MicroRNAs (miRNAs) are crucial biomarkers for disease diagnosis and therapeutic targets.
• CRISPR/Cas12a systems offer high sensitivity and specificity for nucleic acid detection.
• Traditional CRISPR/Cas12a miRNA detection requires RNA-to-DNA conversion, limiting direct application.

Purpose of the Study:

• To review the progression of CRISPR/Cas12a biosensors for miRNA detection.
• To highlight the shift from indirect to direct miRNA detection methodologies.
• To inform the development of improved CRISPR/Cas12a sensors for direct miRNA analysis.

Main Methods:

• Literature review of CRISPR/Cas12a-based biosensors for miRNA detection.
• Analysis of the evolution from indirect (requiring DNA conversion) to direct detection strategies.
• Examination of the underlying mechanisms enabling direct miRNA recognition by CRISPR/Cas12a.

Main Results:

• CRISPR/Cas12a systems have been adapted for increasingly direct miRNA detection.
• Recent advancements enable the direct use of CRISPR/Cas12a for miRNA sensing without prior conversion.
• Direct detection methods overcome limitations associated with traditional RNA-to-DNA conversion steps.

Conclusions:

• The evolution towards direct CRISPR/Cas12a miRNA detection significantly enhances biosensor utility.
• Direct detection strategies promise improved noninvasive diagnostic tools and therapeutic development.
• Further development of direct CRISPR/Cas12a sensors will advance molecular diagnostics and personalized medicine.