PMID- 11513296 OWN - NLM STAT- MEDLINE DCOM- 20020207 LR - 20190901 IS - 0009-5915 (Print) IS - 0009-5915 (Linking) VI - 110 IP - 3 DP - 2001 Jul TI - Heterochromatin and interstitial telomeric DNA homology. PG - 214-20 AB - The purpose of this investigation was twofold. The first objective was to demonstrate that, in most of ten mammalian species commonly used in biomedical research, not all constitutive heterochromatin (C-bands) represents telomeric DNA. For example, the C-bands in human chromosomes, the long arm of the X and the entire Y chromosome of Chinese hamster, and most of the short arms of Peromyscus and Syrian hamster chromosomes are not telomeric DNA. In addition to the usual terminal telomeric DNA in the chromosomes of these mammalian species, the pericentromeric regions of seven or eight Syrian hamster chromosomes and all Chinese hamster chromosomes except pair one have pericentromeric regions that hybridize with telomeric DNA, some in C-bands and some not. The second objective was to describe a simple fluorescence in situ hybridization (FISH) reverse-printing procedure to produce black-and-white microphotographs of metaphase and interphase cells showing locations of telomeric DNA with no loss of resolution. Thus, at least three different types of heterochromatin (telomeric heterochromatin, nontelomeric heterochromatin and a combination of both) are present in these mammalian species, and this simple black-and-white reverse printing of telomeric FISH preparations can depict them economically without sacrificing clarity. FAU - Multani, A S AU - Multani AS AD - Department of Cancer Biology, The University of Texas, M.D. Anderson Cancer Center, Houston 77030, USA. FAU - Ozen, M AU - Ozen M FAU - Furlong, C L AU - Furlong CL FAU - Zhao, Y J AU - Zhao YJ FAU - Hsu, T C AU - Hsu TC FAU - Pathak, S AU - Pathak S LA - eng GR - RRO-4999-01/RR/NCRR NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - Austria TA - Chromosoma JT - Chromosoma JID - 2985138R RN - 0 (Heterochromatin) RN - 9007-49-2 (DNA) SB - IM MH - Animals MH - Cells, Cultured MH - Centromere/chemistry MH - Chromosome Banding MH - DNA/*chemistry/genetics MH - Diploidy MH - Female MH - Heterochromatin/*chemistry/genetics MH - Humans MH - Image Processing, Computer-Assisted MH - In Situ Hybridization, Fluorescence/*methods MH - Karyotyping MH - Male MH - Skin/cytology MH - Species Specificity MH - Telomere/*chemistry MH - Y Chromosome/chemistry EDAT- 2001/08/22 10:00 MHDA- 2002/02/08 10:01 CRDT- 2001/08/22 10:00 PHST- 2001/08/22 10:00 [pubmed] PHST- 2002/02/08 10:01 [medline] PHST- 2001/08/22 10:00 [entrez] AID - 10.1007/s004120100133 [doi] PST - ppublish SO - Chromosoma. 2001 Jul;110(3):214-20. doi: 10.1007/s004120100133.