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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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Southern Blot02:57

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Agarose gel electrophoresis is very useful in separating DNA fragments by size. Running a DNA ladder containing fragments of the known length alongside the sample helps determine the approximate length of the sample DNA fragments. However, additional steps are needed to verify the sequence identity of the sample DNA fragments.
Denatured DNA fragments must be transferred onto a carrier membrane from the gel to make it accessible to a probe - a small ssDNA fragment complementary to the target DNA...
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High-Density DNA and RNA microarrays - Photolithographic Synthesis, Hybridization and Preparation of Large Nucleic Acid Libraries
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How to copy and paste DNA microarrays.

Stefan D Krämer1,2, Johannes Wöhrle3,4, Philipp A Meyer3,4

  • 1ZBSA - Center for Biological Systems Analysis, Albert-Ludwigs-University Freiburg, Habsburgerstrasse. 49, D-79104, Freiburg, Germany. stefan.kraemer@biocopy.de.

Scientific Reports
|September 28, 2019
PubMed
Summary
This summary is machine-generated.

Researchers created a DNA microarray copier, similar to a photocopier, enabling cost-efficient replication of DNA microarrays. This new technique allows for altered resolutions in copied DNA microarrays and has potential as a standard laboratory tool.

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Area of Science:

  • Biotechnology
  • Molecular Biology
  • Genomics

Background:

  • DNA microarrays are crucial for high-throughput genetic analysis.
  • Existing methods for DNA microarray replication are limited.
  • A need exists for accessible and adaptable DNA microarray fabrication techniques.

Purpose of the Study:

  • To develop a novel DNA microarray copier analogous to a photocopier.
  • To demonstrate the ability to alter the resolution of copied DNA microarrays.
  • To validate the functionality of copied DNA microarrays in binding assays.

Main Methods:

  • Development of a DNA microarray copy technique using a small volume (5 µl) of spPCR mix.
  • Production of DNA microarray copies with varying resolutions.
  • Performance of label-free, real-time kinetic binding assays using the copied microarrays.
  • Homage replication of a DNA microarray 80 years after the first photocopy.

Main Results:

  • Successful replication of patterned DNA microarrays was achieved.
  • Copied DNA microarrays exhibited adjustable resolutions.
  • Label-free kinetic binding assays with apo-dCas9 and thrombin were successfully performed on copied microarrays.
  • The process proved to be cost-efficient due to minimal reagent usage.

Conclusions:

  • The developed DNA microarray copier is a cost-efficient and adaptable technology.
  • This technique has the potential to become a standard tool in molecular biology laboratories.
  • The ability to create DNA microarray copies with altered resolutions expands their utility.