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Preferential fluorescent staining of heterochromatic regions in human chromosomes 9, 15, and the Y by D 287/170

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Summary

The utility of a newly synthesized chemical variation of DAPI (4′-6-diamidino-2-phenyl-indole), D 287/170, for differential staining of constitutive heterochromatin in man is demonstrated. Direct staining of human chromosomes with D 287/170 results in brilliant fluorescence of the paracentromeric C-band of chromosome 9, of a proximal short-arm segment of chromosome 15 and of certain heterochromatic regions in the Y. Bright, but less conspicuous fluorescence is occassionally seen at the centromeres of other chromosomes. The staining differentiation obtained by D 287/170 is very distinct, and the intensity of the fluorescent light is unusually high. The new fluorochrome should prove particularly useful for detecting and analyzing human chromosome 9 heterochromatin at various stages of the cell cycle in normal and structurally altered chromosomes.

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References

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Correspondence to W. Schnedl.

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Schnedl, W., Abraham, R., Dann, O. et al. Preferential fluorescent staining of heterochromatic regions in human chromosomes 9, 15, and the Y by D 287/170. Hum Genet 59, 10–13 (1981). https://doi.org/10.1007/BF00278847

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Keywords

  • Human Chromosome
  • Quinacrine
  • Heterochromatic Region
  • Constitutive Heterochromatin
  • Distamycin