Rapid DNA Sequencing Technology Based on the Sanger Method for Bacterial Identification.

Area of Science:

• Microbiology
• Molecular Biology
• Biotechnology

Background:

• Antimicrobial resistance is a growing global health threat, necessitating rapid bacterial identification for effective sepsis treatment.
• Timely and accurate identification of bacterial pathogens is critical for selecting appropriate antimicrobial agents and improving patient outcomes.
• Current methods for bacterial identification can be time-consuming, delaying critical treatment decisions for sepsis.

Purpose of the Study:

• To develop a rapid, integrated DNA sequencing workflow for bacterial identification.
• To significantly reduce the time required for PCR amplification, cycle sequencing, and microchip electrophoresis.
• To enable bacterial identification within one hour for expedited sepsis management.

Main Methods:

• Development of a rapid Polymerase Chain Reaction (PCR) method.
• Implementation of rapid cycle sequencing utilizing microfluidic technology.
• Application of microchip electrophoresis with a custom analysis algorithm for DNA fragment separation and identification.
• Integration of Sanger sequencing-based technologies into a streamlined workflow.

Main Results:

• Achieved PCR amplification in 13 minutes and cycle sequencing in 14 minutes.
• Completed DNA analysis via microchip electrophoresis in 14 minutes.
• Successfully integrated the three core Sanger sequencing steps, completing them within 41 minutes.
• Demonstrated the potential for bacterial identification within one hour with further optimization of purification steps.

Conclusions:

• The developed rapid DNA sequencing method significantly shortens the time for bacterial identification.
• This accelerated workflow holds promise for timely diagnosis and treatment of sepsis.
• Further refinement, including rapid purification, could enable identification of causative bacterial agents within one hour, revolutionizing sepsis management.