PMID- 20176923 OWN - NLM STAT- MEDLINE DCOM- 20100326 LR - 20211020 IS - 1540-8140 (Electronic) IS - 0021-9525 (Print) IS - 0021-9525 (Linking) VI - 188 IP - 4 DP - 2010 Feb 22 TI - Condensin complexes regulate mitotic progression and interphase chromatin structure in embryonic stem cells. PG - 491-503 LID - 10.1083/jcb.200908026 [doi] AB - In an RNA interference screen interrogating regulators of mouse embryonic stem (ES) cell chromatin structure, we previously identified 62 genes required for ES cell viability. Among these 62 genes were Smc2 and -4, which are core components of the two mammalian condensin complexes. In this study, we show that for Smc2 and -4, as well as an additional 49 of the 62 genes, knockdown (KD) in somatic cells had minimal effects on proliferation or viability. Upon KD, Smc2 and -4 exhibited two phenotypes that were unique to ES cells and unique among the ES cell-lethal targets: metaphase arrest and greatly enlarged interphase nuclei. Nuclear enlargement in condensin KD ES cells was caused by a defect in chromatin compaction rather than changes in DNA content. The altered compaction coincided with alterations in the abundance of several epigenetic modifications. These data reveal a unique role for condensin complexes in interphase chromatin compaction in ES cells. FAU - Fazzio, Thomas G AU - Fazzio TG AD - Biochemistry and Biophysics Department, University of California, San Francisco, San Francisco, CA 94158, USA. thomas.fazzio@ucsf.edu FAU - Panning, Barbara AU - Panning B LA - eng GR - 1K99CA140854-01/CA/NCI NIH HHS/United States GR - R01 GM085186/GM/NIGMS NIH HHS/United States GR - R01 GM63671/GM/NIGMS NIH HHS/United States GR - K99 CA140854/CA/NCI NIH HHS/United States GR - T32CA09043/CA/NCI NIH HHS/United States GR - R01 GM063671/GM/NIGMS NIH HHS/United States GR - T32 CA009043/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - United States TA - J Cell Biol JT - The Journal of cell biology JID - 0375356 RN - 0 (Chromatin) RN - 0 (DNA-Binding Proteins) RN - 0 (Histones) RN - 0 (Multiprotein Complexes) RN - 0 (Tumor Suppressor Protein p53) RN - 0 (condensin complexes) RN - 452VLY9402 (Serine) RN - EC 3.6.1.- (Adenosine Triphosphatases) SB - IM MH - Adenosine Triphosphatases/*metabolism MH - Anaphase MH - Animals MH - Apoptosis MH - Cell Proliferation MH - Cell Survival MH - Chromatin/*chemistry MH - DNA Damage MH - DNA-Binding Proteins/*metabolism MH - Embryo, Mammalian/cytology MH - Embryonic Stem Cells/*cytology/*metabolism MH - Fibroblasts/cytology/metabolism MH - Gene Knockdown Techniques MH - Histones/metabolism MH - *Interphase MH - Metaphase MH - Mice MH - *Mitosis MH - Multiprotein Complexes/*metabolism MH - Phenotype MH - Phosphorylation MH - RNA Interference MH - Serine/metabolism MH - Tumor Suppressor Protein p53/metabolism PMC - PMC2828918 EDAT- 2010/02/24 06:00 MHDA- 2010/03/27 06:00 PMCR- 2010/08/22 CRDT- 2010/02/24 06:00 PHST- 2010/02/24 06:00 [entrez] PHST- 2010/02/24 06:00 [pubmed] PHST- 2010/03/27 06:00 [medline] PHST- 2010/08/22 00:00 [pmc-release] AID - jcb.200908026 [pii] AID - 200908026 [pii] AID - 10.1083/jcb.200908026 [doi] PST - ppublish SO - J Cell Biol. 2010 Feb 22;188(4):491-503. doi: 10.1083/jcb.200908026.