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Related Concept Videos

Capillary Electrophoresis: Applications01:30

Capillary Electrophoresis: Applications

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Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
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Electrophoresis is a powerful analytical separation technique that relies on the differential migration of charged species when subjected to an electric field. The core strength of electrophoresis lies in its ability to separate high-molecular-weight species in complex mixtures. It has found widespread use in biochemistry, molecular biology, and analytical chemistry, allowing the separation of compounds like amino acids, nucleotides, carbohydrates, and proteins with excellent resolution.
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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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Capillary electrophoresis instrumentation typically consists of several key components. A high-voltage power supply generates the electric field necessary for the separation by connecting to an anode (the positively charged electrode) and a cathode (the negatively charged electrode) located in buffer reservoirs at each end of the capillary tube. The system includes a sample vial, a fused silica capillary tube coated with polyimide for mechanical strength through which the sample components...
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Visual Detection of Multiple Nucleic Acids in a Capillary Array
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Visual detection of multiple genetically modified organisms in a capillary array.

Ning Shao1, Jianwei Chen1, Jiaying Hu2

  • 1Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China. taosc@sjtu.edu.cn and State Key Laboratory of Oncogenes and Related Genes, Shanghai 200240, China and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.

Lab on a Chip
|January 17, 2017
PubMed
Summary
This summary is machine-generated.

A new Capillary Array-based Loop-mediated isothermal amplification for Multiplex visual detection (CALM) platform enables rapid, low-cost monitoring of genetically modified organisms (GMOs). This visual detection method offers high specificity and sensitivity for transgenic gene detection.

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Area of Science:

  • Biotechnology
  • Molecular Biology
  • Genetics

Background:

  • Genetically modified organisms (GMOs) require rapid, cost-effective, and multiplex detection methods.
  • Existing methods for GMO monitoring can be time-consuming and expensive.

Purpose of the Study:

  • To develop a simple, rapid, and multiplex platform for GMO monitoring.
  • To enable visual detection of nucleic acids for GMO analysis.

Main Methods:

  • Developed a Capillary Array-based Loop-mediated isothermal amplification for Multiplex visual detection (CALM) platform.
  • Pre-fixed loop-mediated isothermal amplification (LAMP) primer sets to capillary surfaces.
  • Utilized capillary forces for simultaneous loading and separation of reaction mixtures.
  • Performed parallel LAMP reactions within capillaries and visual detection using a UV device.

Main Results:

  • Successfully detected seven common transgenic genes and five plant reference genes with high specificity and sensitivity.
  • CALM results for blind samples were consistent with real-time PCR.
  • Demonstrated the ability to detect multiple nucleic acids in a single test.

Conclusions:

  • The CALM platform provides a simple, rapid, and multiplex approach for GMO monitoring.
  • CALM is a promising technology for widespread application in GMO analysis.
  • This method offers a cost-effective and efficient alternative for genetic detection.