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Related Concept Videos

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The different configurations of source-load connections include wye (star) and delta connections. The relationship between line and phase voltages and currents varies depending on the configuration. When the source is supplying power, it is transmitted through the wires to the load, and during this transmission, some power is absorbed by the wires, leading to line loss.
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Related Experiment Video

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Infinium Assay for Large-scale SNP Genotyping Applications
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A Microfluidic-Based SNP Genotyping Method for Hereditary Hearing-Loss Detection.

Ying Lu1, Shan Chen2, Li Wei3

  • 1Department of Biomedical Engineering, School of Medicine , Tsinghua University , Beijing 100084 , China.

Analytical Chemistry
|March 29, 2019
PubMed
Summary

This study introduces a microfluidic chip for rapid single nucleotide polymorphism (SNP) genotyping, significantly reducing detection time for genetic diseases like hereditary hearing loss. The new method offers a faster, simpler, and more efficient alternative to existing techniques.

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Area of Science:

  • Genomics
  • Molecular Diagnostics
  • Bioengineering

Background:

  • Single nucleotide polymorphism (SNP) genotyping is crucial for understanding genetic diseases, particularly hereditary hearing loss.
  • Current SNP detection methods are time-consuming, labor-intensive, and prone to contamination.
  • There is a need for faster, more efficient, and reliable SNP genotyping techniques.

Purpose of the Study:

  • To develop and validate a microfluidic chip for rapid and efficient SNP genotyping.
  • To overcome the limitations of existing SNP detection methods.
  • To apply the microfluidic chip for screening mutations associated with hereditary hearing loss.

Main Methods:

  • A microfluidic chip was designed to compartmentalize samples for Kompetitive Allele Specific PCR (KASPar).
  • The chip enables multiplexed SNP detection in a fully sealed system.
  • The entire genotyping process is completed within 2 hours.

Main Results:

  • The microfluidic chip demonstrated rapid and efficient SNP genotyping.
  • The method successfully screened 15 mutations (SNPs and insertion-deletion markers) relevant to hereditary hearing loss in China.
  • Analysis of over 40 clinical samples showed results consistent with Sanger sequencing.

Conclusions:

  • The developed microfluidic chip provides a practical and efficient solution for SNP genotyping.
  • This technology has significant potential for the diagnosis and screening of genetic diseases.
  • The chip offers a simplified and faster alternative to conventional methods like SNaPshot and MassArray.