PMID- 16877804 OWN - NLM STAT- MEDLINE DCOM- 20061120 LR - 20181113 IS - 1234-1983 (Print) IS - 1234-1983 (Linking) VI - 47 IP - 3 DP - 2006 TI - Loop formation by the transgene WAP:6xHishGH in transgenic rabbit fibroblasts, revealed by fluorescence in situ hybridization to nuclear halos. PG - 247-9 AB - Using fluorescence in situ hybridization (FISH) to somatic nuclear halos from transgenic rabbits WAP:6xHishGH, we present evidence for stability of transgenesis at the chromatin level. FISH performed on fibroblasts from a homozygous individual showed 2 independent loops from both chromosomes of pair 7. On a heterozygous individual, FISH detected a single loop. According to the concept of chromatin loops and their influence on gene expression, this shows that the human growth hormone transgene, which was actively expressed in mammary gland under the influence of the tissue-specific promoter, was inactive in examined skin fibroblasts. FAU - Michalak, Ewa AU - Michalak E AD - Department of Biochemistry and Biotechnology, Agricultural University, Poznan, Poland. elenis@wp.pl FAU - Lipinski, Daniel AU - Lipinski D FAU - Slomski, Ryszard AU - Slomski R LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - J Appl Genet JT - Journal of applied genetics JID - 9514582 RN - 0 (Chromatin) RN - 12629-01-5 (Human Growth Hormone) SB - IM MH - Animals MH - Chromatin/*genetics MH - Fibroblasts MH - Human Growth Hormone/genetics MH - In Situ Hybridization, Fluorescence MH - Rabbits/*genetics MH - Transgenes/*genetics EDAT- 2006/08/01 09:00 MHDA- 2006/12/09 09:00 CRDT- 2006/08/01 09:00 PHST- 2006/08/01 09:00 [pubmed] PHST- 2006/12/09 09:00 [medline] PHST- 2006/08/01 09:00 [entrez] AID - 347 [pii] AID - 10.1007/BF03194631 [doi] PST - ppublish SO - J Appl Genet. 2006;47(3):247-9. doi: 10.1007/BF03194631.