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Related Concept Videos

DNA Microarrays02:34

DNA Microarrays

Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...
Modern Molecular Taxonomy01:29

Modern Molecular Taxonomy

Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...

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High-throughput Detection of Respiratory Pathogens in Animal Specimens by Nanoscale PCR
11:00

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Published on: November 28, 2016

Large scale multiplex PCR improves pathogen detection by DNA microarrays.

Maria Palka-Santini1, Berit E Cleven, Ludwig Eichinger

  • 1Institute for Medical Microbiology, Immunology and Hygiene, Medical Faculty, University of Cologne, Germany. mpalka-santini@mmm.com

BMC Microbiology
|January 6, 2009
PubMed
Summary
This summary is machine-generated.

This study introduces large scale multiplex PCR (LSplex PCR) to enhance DNA detection for pathogen identification using microarrays. LSplex PCR significantly boosts the sensitivity of DNA microarrays for detecting infectious agents.

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Area of Science:

  • Microbiology
  • Molecular Diagnostics
  • Genomics

Background:

  • DNA microarrays offer potential for simultaneous pathogen identification and characterization.
  • Low pathogen DNA levels in clinical samples limit current microarray diagnostic sensitivity.

Purpose of the Study:

  • To improve the detection power of DNA microarrays for identifying sepsis-causing pathogens.
  • To overcome limitations posed by low pathogen DNA concentrations in clinical specimens.

Main Methods:

  • Development and application of a large scale multiplex PCR (LSplex PCR) protocol.
  • Utilizing a broad set of primer pairs to amplify numerous gene segments for microarray hybridization.

Main Results:

  • LSplex PCR selectively amplifies target gene segments specific to the pathogen present.
  • The protocol demonstrated a 100 to 1000-fold increase in microarray detection of target DNA templates.
  • Successful amplification of dozens of gene segments from 9 pathogenic species.

Conclusions:

  • LSplex PCR provides a proof of principle for enhancing pathogen DNA detection via microarray hybridization.
  • This method significantly improves the sensitivity of molecular diagnostic tools for infectious diseases.