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Related Concept Videos

DNA Microarrays02:34

DNA Microarrays

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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...
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A Combinatorial Single-cell Approach to Characterize the Molecular and Immunophenotypic Heterogeneity of Human Stem and Progenitor Populations
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A multi-layer microchip for high-throughput single-cell gene expression profiling.

Hao Sun1

  • 1School of Mechanical Engineering, Fuzhou University, Fuzhou, Fujian, 350001, China.

Analytical Biochemistry
|June 4, 2016
PubMed
Summary
This summary is machine-generated.

This study introduces a novel microfluidic system for rapid, parallel RNA analysis at the single-cell level. The technology enables high-throughput gene expression profiling, crucial for understanding disease mechanisms.

Keywords:
Bio-MEMSHigh-throughput single-cell analysisIntegrated RT–qPCR

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Area of Science:

  • Biotechnology
  • Molecular Biology
  • BioMEMS

Background:

  • Microfluidics and Bio-MEMS enable high-throughput screening and sensitive assays.
  • Correlating single-cell genetic information with cellular phenotypes is vital for understanding disease pathways.
  • Previous prototypes achieved single-cell gene expression profiling with a throughput of 6.

Purpose of the Study:

  • To develop a five-layer microfluidic system for parallelized, rapid, quantitative analysis of low-abundance RNA at the single-cell level.
  • To enable simplified operation for handling and processing biomolecules.

Main Methods:

  • A five-layer microfluidic chip with multiplexors and a partitioning valve group.
  • A 6x8 matrix of quantitative reverse transcription polymerase chain reaction (RT-qPCR) units using parallel microchannels and elastomeric pneumatic valves.
  • A metallic nanofilm with a passivation layer for PCR temperature cycling.
  • Detection of PCR products via fluorescence microscopy using TaqMan probes.

Main Results:

  • Demonstrated utility using artificial synthesized RNA templates (XenoRNA) and single-cell mRNA.
  • Successfully performed 48-readout RT-qPCRs.
  • Acquired and measured fluorescent intensities for passive reference dye and fluorescein amidite reporter dye.

Conclusions:

  • The developed microfluidic system facilitates parallelized, rapid, and quantitative single-cell RNA analysis.
  • This technology enhances the ability to study gene expression at the single-cell level.
  • The system offers a simplified operational procedure for complex biomolecular analyses.