Development of rapid coagulase serotyping method by PCR and microplate hybridization

Area of Science:

• Microbiology
• Molecular Biology

Background:

• Coagulase serotyping is crucial for identifying Staphylococcus aureus strains.
• Conventional methods rely on coagulase activity, which can lead to inaccurate serotyping.

Purpose of the Study:

• To develop and validate a novel, objective PCR-based method for coagulase serotyping.

Main Methods:

• Developed a PCR-based assay incorporating biotinylated amplicons.
• Utilized microplate hybridization (MPH) with serotype-specific probes for identification.
• Compared the novel PCR-MPH method with conventional serotyping for 90 Staphylococcus aureus strains.

Main Results:

• The PCR-MPH method demonstrated results consistent with the conventional method.
• PCR-MPH is not influenced by variations in coagulase activity.
• The entire PCR-MPH process, from colony isolation to result interpretation, takes approximately 3 hours.

Conclusions:

• PCR-MPH is a rapid, objective, and reliable alternative for coagulase serotyping.
• This method enhances accuracy by eliminating dependence on coagulase activity.
• The speed and objectivity of PCR-MPH facilitate efficient bacterial identification.