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Practical histological microdissection for PCR analysis

J J Going1, R F Lamb

  • 1University Department of Pathology, Glasgow Royal Infirmary, U.K.

The Journal of Pathology
|May 1, 1996
PubMed
Summary
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Histological microdissection enables cell recovery from archival tissues for molecular analysis. This technique successfully retrieves cells for polymerase chain reaction (PCR) analysis, even from decades-old samples.

Area of Science:

  • Histology
  • Molecular Biology
  • Genetics

Background:

  • Histological microdissection is a valuable technique for isolating specific cells from tissue sections.
  • Its application is growing for molecular analyses such as polymerase chain reaction (PCR).

Purpose of the Study:

  • To describe and validate techniques for histological microdissection of archival tissues.
  • To demonstrate the successful recovery of cells for subsequent PCR analysis.

Main Methods:

  • Archival formalin-fixed, paraffin-embedded tissue sections (up to 15 years old) were used.
  • Sections were stained with toluidine blue and microdissected using a tungsten needle and micromanipulator under proteinase K buffer.
  • Recovered cells were digested and analyzed using PCR with a 32P 5'-end-labelled primer, polyacrylamide gel electrophoresis, and autoradiography.

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Main Results:

  • Consistent amplification and analysis of microsatellite loci were achieved.
  • Successful recovery of cells for PCR analysis from aged tissue samples was demonstrated.

Conclusions:

  • Histological microdissection is an effective method for isolating cells from archival tissues for molecular analysis.
  • The described technique allows for reliable genetic analysis from challenging historical samples.