期刊
DIAGNOSTICS
卷 8, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/diagnostics8040077
关键词
in vitro diagnostic (IVD); syndromic approach; DNA; dendrimer; PCR; biochips; machine-learning methods
资金
- Region Midi Pyrenees [06001324, 07006292]
- ANR grant [ANR-10-BIOT-0004]
Clinical microbiology is experiencing the emergence of the syndromic approach of diagnosis. This paradigm shift will require innovative technologies to detect rapidly, and in a single sample, multiple pathogens associated with an infectious disease. Here, we report on a multiplex technology based on DNA-microarray that allows detecting and discriminating 11 bacteria implicated in respiratory tract infection. The process requires a PCR amplification of bacterial 16S rDNA, a 30 min hybridization step on species-specific oligoprobes covalently linked on dendrimers coated glass slides (DendriChips((R))) and a reading of the slides by a dedicated laser scanner. A diagnostic result is delivered in about 4 h as a predictive value of presence/absence of pathogens using a decision algorithm based on machine-learning method, which was constructed from hybridization profiles of known bacterial and clinical isolated samples and which can be regularly enriched with hybridization profiles from clinical samples. We demonstrated that our technology converged in more than 95% of cases with the microbiological culture for bacteria detection and identification.
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