CRISPR-Cas based platforms for RNA detection: fundamentals and applications

Area of Science:

• Molecular Biology
• Biotechnology
• Diagnostic Technologies

Background:

• RNA biomarker detection is vital for diagnosing urgent diseases like infections and cancer.
• Conventional RNA detection methods (RT-PCR, LAMP, microarrays) have limitations in speed, sensitivity, and equipment needs.
• CRISPR/Cas systems present a promising alternative for RNA detection due to their specificity and adaptability.

Purpose of the Study:

• To review and categorize CRISPR-based RNA detection systems.
• To explore the mechanisms, applications, and challenges of CRISPR RNA diagnostics.
• To highlight the potential of CRISPR technology in clinical settings for disease detection.

Main Methods:

• Categorization of CRISPR effectors (Cas13, Cas12, Cas14, Cas9, Cas7-11, Cas10) based on RNA detection mechanisms.
• Analysis of CRISPR platforms with and without pre-amplification strategies (e.g., RT-PCR, isothermal amplification, split-crRNA).
• Exploration of diagnostic applications in infectious disease and cancer biomarker (miRNA) identification.

Main Results:

• CRISPR systems offer programmable RNA targeting with high specificity.
• Both pre-amplification-based and pre-amplification-free CRISPR strategies demonstrate diagnostic utility.
• CRISPR platforms show significant potential for point-of-care (POC) diagnostics and biomarker detection.

Conclusions:

• CRISPR-based RNA detection offers a versatile and specific alternative to conventional methods.
• Further development is needed to enhance sensitivity in amplification-free formats and create cost-effective, field-deployable systems.
• CRISPR diagnostics are poised to transform clinical settings for infectious disease and cancer detection.