PMID- 22413994 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20121002 LR - 20211021 IS - 1755-8166 (Electronic) IS - 1755-8166 (Linking) VI - 5 DP - 2012 Mar 14 TI - Centromeric association of small supernumerary marker chromosomes with their sister-chromosomes detected by three dimensional molecular cytogenetics. PG - 15 LID - 10.1186/1755-8166-5-15 [doi] AB - BACKGROUND: Small supernumerary marker chromosomes (sSMC) are detected in 0.043% of general population and can be characterized for their chromosomal origin, genetic content and shape by molecular cytogenetic approaches. Even though recently progress was achieved towards genotype-phenotype-correlations of sSMC, nothing is known on the influence that an additional derivative extra chromosome has on the nuclear architecture. RESULTS: Here we present the first three-dimensional interphase fluorescence in situ hybridization (FISH) studies for the nuclear architecture of sSMC. It could be shown that sSMC derived from chromosomes 15, 16 or 18 preferentially colocalized with one of their corresponding sister chromosomes. This was true in B- and T-lymphocytes as well as in skin fibroblasts. Additionally, a case with a complex sSMC with a karyotype 47,XY,+der(18)t(8;18)(8p23.2 ~ 23.1;18q11.1) was studied. Here the sSMC co-localized with one homologous chromosome 8 instead of 18. CONCLUSION: Overall, there is a kind of "attraction" between an sSMC and one of its homologous sister chromosomes. This seems to be transmitted by the euchromatic part of the sSMC rather than its heterochromatic one. FAU - Klein, Elisabeth AU - Klein E AD - Jena University Hospital, Friedrich Schiller University, Institute of Human Genetics, Kollegiengasse 10, D-07743 Jena, Germany. i8lith@mti.uni-jena.de. FAU - Manvelyan, Marina AU - Manvelyan M FAU - Simonyan, Isabella AU - Simonyan I FAU - Hamid, Ahmed B AU - Hamid AB FAU - Guilherme, Roberta Santos AU - Guilherme RS FAU - Liehr, Thomas AU - Liehr T FAU - Karamysheva, Tatyana AU - Karamysheva T LA - eng PT - Journal Article DEP - 20120314 PL - England TA - Mol Cytogenet JT - Molecular cytogenetics JID - 101317942 PMC - PMC3313875 EDAT- 2012/03/15 06:00 MHDA- 2012/03/15 06:01 PMCR- 2012/03/14 CRDT- 2012/03/15 06:00 PHST- 2012/01/18 00:00 [received] PHST- 2012/03/14 00:00 [accepted] PHST- 2012/03/15 06:00 [entrez] PHST- 2012/03/15 06:00 [pubmed] PHST- 2012/03/15 06:01 [medline] PHST- 2012/03/14 00:00 [pmc-release] AID - 1755-8166-5-15 [pii] AID - 10.1186/1755-8166-5-15 [doi] PST - epublish SO - Mol Cytogenet. 2012 Mar 14;5:15. doi: 10.1186/1755-8166-5-15.