CRISPR-based detection of Helicobacter pylori in stool samples

Area of Science:

• Molecular Biology
• Biotechnology
• Infectious Disease Diagnostics

Background:

• Noninvasive detection of Helicobacter pylori is crucial but limited by costly and complex methods.
• Existing noninvasive techniques are not widely adopted for large-scale epidemiological studies.

Purpose of the Study:

• To develop a reliable, rapid, and cost-effective noninvasive method for H. pylori detection.
• To utilize CRISPR-Cas12a technology for identifying H. pylori in stool specimens.

Main Methods:

• A novel detection method was established using CRISPR-Cas12a technology.
• The method was validated using 41 stool specimens and compared against rapid urease and urea breath tests.
• Lateral flow biosensors were employed for result visualization.

Main Results:

• The CRISPR-Cas12a method demonstrated a limit of detection of 5 copies/μl.
• The system showed no cross-reactivity with other pathogens, confirming specificity.
• Stool specimen testing using lateral flow biosensor strips provided accessible results.

Conclusions:

• The CRISPR-Cas12a based method successfully detected H. pylori in stool.
• This approach is rapid, simple, and inexpensive, making it a promising supplemental test for H. pylori detection and screening.
• Further examination of sensitivity and specificity against gold standard tests is warranted.