PER-Based DNA Cube Captor for High Specific and Efficient SERS Detection of HPV

Area of Science:

• Biotechnology
• Nanotechnology
• Molecular Diagnostics

Background:

• Early detection of human papillomavirus (HPV) is critical for preventing and treating HPV-associated cancers, including cervical, anal, and penile cancers.
• Current detection methods require improvement in specificity and efficiency.

Purpose of the Study:

• To design and develop a novel DNA cube captor (PDCC) for highly sensitive and specific detection of HPV.
• To utilize primer exchange reaction (PER) and catalytic hairpin assembly (CHA) for enhanced DNA capture and detection.

Main Methods:

• Designed a PDCC system integrating PER for target DNA amplification and CHA for capturing Raman molecular labeled DNA onto DNA cube nanostructures (DCNs).
• Immobilized DCNs onto gold hexagonal plates (GHPs) for sensitive Raman detection.
• PER ensures high specificity by requiring a perfect match with the PER hairpin.

Main Results:

• The PDCC system demonstrated high specificity and efficiency in capturing Raman molecular labeled DNA.
• Successfully achieved highly sensitive detection of HPV-58 using the developed PDCC device.
• The CHA reaction's efficiency was enhanced by proximity effects on the DNA cube structure.

Conclusions:

• The developed PDCC is a highly efficient and specific tool for HPV detection.
• This technology holds significant potential for the early diagnosis and treatment of HPV-related cancers.
• PDCC offers a promising platform for molecular diagnostics with applications in cancer prevention and management.