PMID- 23320952 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20130207 LR - 20211021 IS - 1755-8166 (Print) IS - 1755-8166 (Electronic) IS - 1755-8166 (Linking) VI - 6 IP - 1 DP - 2013 Jan 16 TI - Trisomy 8: a common finding in mouse embryonic stem (ES) cell lines. PG - 3 LID - 10.1186/1755-8166-6-3 [doi] AB - BACKGROUND: Obtaining a germ cell line is one of the most important steps in developing a transgenic or knockout mouse with a targeted mutated gene of interest. A common problem with this technology is that embryonic stem (ES) cells often lack, or are extremely inefficient at, germ line transmission. RESULTS: To determine whether chromosomal anomalies are correlated with inefficient ES cell germ line transmission, we examined 97 constructed ES cell lines using conventional cytogenetic analysis, and fluorescence in situ hybridization (FISH). Chromosomal abnormalities occurred in 44 (45%) out of the 97 specimens analyzed: 31 specimens had trisomy 8 or mosaic trisomy 8, eight specimens had partial trisomy 8 resulting from unbalanced translocations, and five specimens had other chromosomal anomalies. CONCLUSIONS: Our data suggest that chromosomal analysis is an important tool for improving the yield and quality of gene targeting experiments. FAU - Kim, Young Mi AU - Kim YM AD - Department of Pediatrics, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA. shibo-li@ouhsc.edu. FAU - Lee, Ji-Yun AU - Lee JY FAU - Xia, Lijun AU - Xia L FAU - Mulvihill, John J AU - Mulvihill JJ FAU - Li, Shibo AU - Li S LA - eng PT - Journal Article DEP - 20130116 PL - England TA - Mol Cytogenet JT - Molecular cytogenetics JID - 101317942 PMC - PMC3564830 EDAT- 2013/01/17 06:00 MHDA- 2013/01/17 06:01 PMCR- 2013/01/16 CRDT- 2013/01/17 06:00 PHST- 2012/08/28 00:00 [received] PHST- 2012/12/06 00:00 [accepted] PHST- 2013/01/17 06:00 [entrez] PHST- 2013/01/17 06:00 [pubmed] PHST- 2013/01/17 06:01 [medline] PHST- 2013/01/16 00:00 [pmc-release] AID - 1755-8166-6-3 [pii] AID - 10.1186/1755-8166-6-3 [doi] PST - epublish SO - Mol Cytogenet. 2013 Jan 16;6(1):3. doi: 10.1186/1755-8166-6-3.