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In Situ Detection of Bacteria within Paraffin-embedded Tissues Using a Digoxin-labeled DNA Probe Targeting 16S rRNA
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Molecular probe technology detects bacteria without culture.

Richard W Hyman1, Robert P St Onge, Hyunsung Kim

  • 1Departments of Biochemistry, Stanford University, Stanford, CA, USA. rhyman@stanford.edu

BMC Microbiology
|March 13, 2012
PubMed
Summary
This summary is machine-generated.

This study introduces molecular inversion probes for detecting bacteria in clinical samples without culturing. The novel approach enables sensitive and specific identification of 40 bacteria in vaginal swabs.

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Area of Science:

  • Microbiology
  • Molecular Biology
  • Genomics

Background:

  • The human microbiome plays a crucial role in health and disease.
  • Detecting the entire microbiome in a single reaction tube is a significant challenge.
  • Culture-independent molecular methods are needed for comprehensive microbiome analysis.

Purpose of the Study:

  • To adapt molecular inversion probes (MIPs) for the detection of bacteria in clinical samples.
  • To develop a massively multiplexed molecular technology for microbiome analysis.
  • To report the initial results of MIPs for bacterial detection in clinical specimens.

Main Methods:

  • Utilized molecular inversion probes (MIPs) requiring only a 40-base unique genomic sequence for bacterial identification.
  • Employed Affymetrix GenFlex Tag16K arrays for multiplexed bacterial detection per sample.
  • Developed a second assay using Sequencing by Oligonucleotide Ligation and Detection (SOLiD) with sample barcoding for increased multiplexing capacity.

Main Results:

  • Successfully detected 40 bacteria using 192 molecular probes in twenty-one vaginal swabs.
  • Achieved excellent correlations between the Affymetrix GenFlex Tag16K assay and the SOLiD assay.
  • Demonstrated the feasibility of MIPs for detecting bacteria in clinical samples.

Conclusions:

  • Molecular inversion probes offer a powerful culture-independent method for comprehensive microbiome analysis.
  • The developed assays enable high-throughput and multiplexed detection of bacteria in clinical samples.
  • This technology holds promise for advancing the study of the human microbiome in health and disease.