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DNA Isolation01:24

DNA Isolation

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DNA isolation protocols can be fast and straightforward or complex and time-consuming depending on the type and quality of DNA required for further processing. For example, plasmid DNA extraction is a bit more complicated than genomic DNA extraction because of the need for an appropriate lysis method to separate plasmid DNA from gDNA during isolation. However, for specific applications, such as long-range DNA sequencing that require a good yield of high- quality DNA samples, we need to follow...
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Labeling DNA Probes03:31

Labeling DNA Probes

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DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
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Related Experiment Video

Updated: Apr 20, 2026

Author Spotlight: Advancements in DNA Nanosensors – Addressing Sensitivity and Selectivity Challenges in Molecular Detection
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Author Spotlight: Advancements in DNA Nanosensors – Addressing Sensitivity and Selectivity Challenges in Molecular Detection

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DNA/RNA preparation for molecular detection.

Stephanie A Thatcher1

  • 1BioFire Diagnostics, Salt Lake City, UT. stephanie.thatcher@biofiredx.com.

Clinical Chemistry
|December 3, 2014
PubMed
Summary
This summary is machine-generated.

Efficient nucleic acid (NA) preparation is crucial for molecular detection. Optimized methods ensure high-purity NA extraction, enabling accurate DNA or RNA analysis for various applications.

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Area of Science:

  • Molecular Biology
  • Biotechnology
  • Genomics

Background:

  • Effective nucleic acid (NA) preparation is vital for molecular techniques detecting specific DNA or RNA sequences.
  • Isolated NA must be efficiently extracted and purified from inhibitors of downstream molecular assays.
  • Numerous NA sample preparation techniques and commercial kits exist, evolving from early characterization studies.

Purpose of the Study:

  • To review current nucleic acid (NA) preparation methods for molecular detection.
  • To highlight factors influencing the selection of NA preparation techniques.
  • To emphasize the importance of efficient NA extraction and purification.

Main Methods:

  • Review of existing NA sample preparation techniques, including cell lysis and isolation/purification.
  • Discussion of advances in solid-phase extraction, automation, and non-hazardous chemicals.
  • Consideration of factors such as sample source, DNA/RNA type, inhibitors, and detection limits.

Main Results:

  • Automated and manual NA preparation methods can yield effective results in under an hour.
  • Various systems offer flexibility for multiple sample types, large batches, rapid processing (<10 min), or high purity.
  • Careful selection of lysis, isolation efficiency, and concentration optimizes NA preparation.

Conclusions:

  • Effective NA preparation is achievable with available automated and manual methods.
  • Method selection should consider application-specific requirements for optimal lysis, isolation, and concentration.
  • Optimized NA preparation is critical for successful molecular detection, including multiple targets from a single sample.