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Related Concept Videos

RNA-seq03:21

RNA-seq

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RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases. 
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while...
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Related Experiment Video

Updated: Apr 19, 2026

A Murine Cell Line Based Model of Chronic CDK9 Inhibition to Study Widespread Non-Genetic Transcriptional Elongation Defects TEdeff in Cancers
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Parallel RNA extraction using magnetic beads and a droplet array.

Xu Shi1, Chun-Hong Chen, Weimin Gao

  • 1Center for Biosignatures Discovery Automation, The Biodesign Institute, Arizona State University Tempe, Arizona, USA. joe.chao@asu.edu.

Lab on a Chip
|December 19, 2014
PubMed
Summary
This summary is machine-generated.

We developed a Total RNA Extraction Droplet Array (TREDA) for rapid purification of RNA from low-concentration cell medium. This simple method offers high efficiency and sensitivity, approaching single-digit cell numbers for genomic analysis.

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Area of Science:

  • Biotechnology
  • Molecular Biology
  • Microfluidics

Background:

  • Nucleic acid extraction is crucial for genomic and transcriptomic studies.
  • Current methods often require complex integration into lab-on-a-chip devices.
  • Efficient RNA extraction from low-concentration samples remains a challenge.

Purpose of the Study:

  • To present a simple and effective method for rapid RNA purification from low-concentration cell medium.
  • To introduce the Total RNA Extraction Droplet Array (TREDA) for seamless magnetic bead purification.
  • To demonstrate the sensitivity and efficiency of TREDA for genomic applications.

Main Methods:

  • Development of the Total RNA Extraction Droplet Array (TREDA) using surface-adhering droplets.
  • Facilitation of magnetic purification bead transport through buffer solutions without solid structures.
  • Rapid fabrication of TREDA chips (< 5 minutes) without specialized facilities.

Main Results:

  • TREDA enables rapid purification of RNA from low-concentration cell medium.
  • Extraction efficiency and repeatability are comparable to conventional tube-based methods.
  • Demonstrated successful mRNA extraction from approximately 10 marine diatom cells, showing single-digit cell sensitivity.

Conclusions:

  • TREDA offers a simple, rapid, and effective solution for nucleic acid extraction.
  • The technology is suitable for genomic and transcriptomic analyses, especially from low-input samples.
  • TREDA advances lab-on-a-chip capabilities for sensitive molecular diagnostics and research.