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Generation and Isolation of Cell Cycle-arrested Cells with Complex Karyotypes
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Full Karyotype Interphase Cell Analysis.

Adi Baumgartner1,2,3, Christy Ferlatte Hartshorne1, Aris A Polyzos2

  • 1Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, California.

The Journal of Histochemistry and Cytochemistry : Official Journal of the Histochemistry Society
|April 20, 2018
PubMed
Summary
This summary is machine-generated.

This study introduces a cost-effective fluorescence in situ hybridization (FISH) technique for analyzing aneuploidy in all 24 human chromosomes within single cells. This method offers enhanced diagnostic potential for research and clinical applications.

Keywords:
DNA probesFISHaneuploidychromosome enumerationfull karyotype analysisinterphase nucleispectral imaging

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Area of Science:

  • Cytogenetics
  • Molecular Biology
  • Cancer Research

Background:

  • Aneuploidy is crucial in embryonic development and tumorigenesis, characterized by chromosomal instability in malignant tumors.
  • Current whole genome sequencing is costly, limiting its widespread clinical and research application.
  • A need exists for cost-effective, efficient methods to assess the ploidy status of all 24 human chromosomes in single interphase cells.

Purpose of the Study:

  • To develop and present a novel, cost-effective fluorescence in situ hybridization (FISH) technique.
  • To enable simultaneous assessment of the ploidy status of all 24 human chromosomes in single interphase cells.
  • To provide a new diagnostic tool for single-cell analysis in research and clinical settings.

Main Methods:

  • Selection of human probe DNA for 24 chromosomes.
  • Development of a multistep FISH technique using four sets of six labeled FISH probes.
  • Application of spectral imaging (SIm) for simultaneous use of up to eight fluorochrome labels.
  • Computer-assigned pseudo-coloring for simplified visual inspection and scoring.

Main Results:

  • Successful delineation of all 24 human chromosomes in interphase cells using the developed FISH technique.
  • Demonstration of full karyotype analysis capability for single-cell interphase nuclei.
  • Simplified scoring through spectral imaging and computer-assisted color differentiation.

Conclusions:

  • The presented FISH technique offers a cost-effective and efficient solution for comprehensive aneuploidy assessment in single cells.
  • This method enhances diagnostic potential for analyzing chromosomal abnormalities.
  • The technique facilitates full karyotype analysis in interphase nuclei, advancing single-cell diagnostics.