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Tracking DNA and RNA sequences at high resolution.

Dušan Cmarko1, Anna Ligasová, Karel Koberna

  • 1Institute of Cellular Biology and Pathology, 1st Faculty of Medicine, Charles University in Prague, Prague, Czech Republic.

Methods in Molecular Biology (Clifton, N.J.)
|December 21, 2013
PubMed
Summary
This summary is machine-generated.

This chapter details electron microscopy in situ hybridization (EM-ISH) methods for detecting DNA and RNA. It compares techniques, highlighting post-embedding EM-ISH as optimal for sensitivity and sample preservation.

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Area of Science:

  • Molecular Biology
  • Microscopy Techniques
  • Genetics

Background:

  • Accurate detection of specific DNA and RNA sequences is crucial in molecular biology.
  • Electron microscopy offers high-resolution visualization for in situ hybridization (ISH).
  • Various EM-ISH protocols exist, each with unique advantages and limitations.

Purpose of the Study:

  • To compare different electron microscopy in situ hybridization (EM-ISH) methods.
  • To evaluate EM-ISH protocols based on sensitivity and sample structural preservation.
  • To guide readers in selecting the most appropriate EM-ISH protocol.

Main Methods:

  • Comparison of various electron microscopy in situ hybridization (EM-ISH) techniques.
  • Detailed description of the post-embedding EM-ISH protocol.
  • Mention of alternative methods using enzymatic synthesis of labeled nucleic acid chains.

Main Results:

  • Post-embedding EM-ISH is frequently the optimal choice for sensitivity and structural preservation.
  • Enzymatic synthesis methods provide alternative approaches for in situ DNA/RNA detection.
  • Specific protocols for polyadenylated RNA sequence detection are detailed.

Conclusions:

  • The chapter provides a comparative analysis to aid researchers in choosing EM-ISH protocols.
  • Post-embedding EM-ISH is recommended for its balance of sensitivity and sample integrity.
  • Alternative enzymatic methods offer versatile options for nucleic acid detection in situ.