A multiplex bacterial assay using an element-labeled strategy for 16S rRNA detection.

Area of Science:

• Microbiology
• Analytical Chemistry
• Biotechnology

Background:

• Accurate and rapid identification of intestinal bacteria is crucial for diagnosing gastrointestinal disorders.
• Traditional culture-based methods are time-consuming and may not capture the full complexity of bacterial communities.
• Multiplex assays offer a promising alternative for simultaneous detection of multiple microbial targets.

Purpose of the Study:

• To develop and validate a novel multiplex bacterial assay.
• To enable simultaneous species-level identification and quantification of intestinal bacteria.
• To assess the potential for point-of-care diagnostics using this method.

Main Methods:

• A multiplex assay combining S1 nuclease pretreatment with inductively coupled plasma mass spectrometry (ICP-MS)-based elemental labels was developed.
• Six specific intestinal bacteria were targeted for simultaneous detection.
• The method was optimized for sensitivity and specificity without requiring isolation culturing.

Main Results:

• The assay successfully identified and quantified six intestinal bacteria at the species level simultaneously.
• The method demonstrated high throughput and specificity, eliminating the need for traditional culturing.
• Quantitative data on bacterial load was obtained rapidly.

Conclusions:

• The developed multiplex bacterial assay is effective for simultaneous identification and quantification of multiple bacterial species.
• This culture-independent method offers a significant advancement for rapid microbial diagnostics.
• The assay has strong potential for application in point-of-care settings for diagnosing intestinal conditions.