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Nuclear non-histone protein content of G0/G1 cells as related to growth fraction in mouse mammary tumors.

Abstract
In eight mouse mammary tumors with varying growth fractions DNA and non-histone nuclear protein (NHNP) were determined by absorption cytophotometry of Feulgen-Naphthol Yellow S stained, isolated cells. It was found that: 1. The mean NHNP content of cells with postmitotic DNA content (G0 + G1) increased with increasing growth fraction. 2. The mean NHNP content of S and G2 cells in the eight tumors did not vary significantly with growth fraction. 3. The frequency distributions of NHNP in G0/G1 cells were unimodal and right-skewed. The results are interpreted as follows: A) G0 cells differ from G1 cells by their lower content of NHNP. B). If it is assumed that the G0 and G1 compartments are arranged in series, the cells in the transition from G0 to late G1 may account for the unimodality and skewedness of the NHNP frequency distributions of postmitotic cells.
AuthorsJ Gaub
JournalVirchows Archiv. B, Cell pathology (Virchows Arch B Cell Pathol) Vol. 24 Issue 3 Pg. 243-9 (Aug 10 1977) Germany
PMID410155 (Publication Type: Journal Article)
Chemical References
  • Chromosomal Proteins, Non-Histone
  • DNA, Neoplasm
Topics
  • Animals
  • Cell Cycle
  • Cell Nucleus (analysis)
  • Chromosomal Proteins, Non-Histone (analysis)
  • DNA, Neoplasm (analysis)
  • Female
  • Mammary Neoplasms, Experimental (pathology)
  • Mice
  • Photometry

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