Nuclear and territorial topography of chromosome telomeres in human lymphocytes

  • Amrichová J
  • Lukášová E
  • Kozubek S
 et al. 
  • 24

    Readers

    Mendeley users who have this article in their library.
  • 36

    Citations

    Citations of this article.

Abstract

Nuclear and territorial positioning of p- and q-telomeres and centromeres of chromosomes 3, 8, 9, 13, and 19 were studied by repeated fluorescence in situ hybridization, high-resolution cytometry, and three-dimensional image analysis in human blood lymphocytes before and after stimulation. Telomeres were found on the opposite side of the territories as compared with the centromeres for all chromosome territories investigated. Mutual distances between telomeres of submetacentric chromosomes were very short, usually shorter than centromere-to-telomere distances, which means that the chromosome territory is nonrandomly folded. Telomeres are, on average, much nearer to the center of the cell nucleus than centromeres; q-telomeres were found, on average, more centrally localized as compared with p-telomeres. Consequently, we directly showed that chromosome territories in the cell nucleus are (1) polar and (2) partially oriented in cell nuclei. The distributions of genetic elements relative to chromosome territories (territorial distributions) can be either narrower or broader than their nuclear distributions, which reflects the degree of adhesion of an element to the territory or to the nucleus. We found no tethering of heterologous telomeres of chromosomes 8, 9, and 19. In contrast, both pairs of homologous telomeres of chromosome 19 (but not in other chromosomes) are tethered (associated) very frequently. © 2003 Elsevier Science (USA). All rights reserved.

Author-supplied keywords

  • Centromere
  • Chromatin structure
  • Chromosome territory
  • Human lymphocytes
  • Interphase chromosome
  • Nuclear architecture
  • Telomere
  • Telomere association
  • Telomere tethering

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Authors

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free