PMID- 21341991 OWN - NLM STAT- MEDLINE DCOM- 20120216 LR - 20211020 IS - 1557-8534 (Electronic) IS - 1547-3287 (Print) IS - 1547-3287 (Linking) VI - 20 IP - 11 DP - 2011 Nov TI - L3MBTL1 deficiency directs the differentiation of human embryonic stem cells toward trophectoderm. PG - 1889-900 LID - 10.1089/scd.2010.0437 [doi] AB - Human embryonic stem cells (hESCs) can be used to study the early events in human development and, hopefully, to understand how to differentiate human pluripotent cells for clinical use. To define how L3MBTL1, a chromatin-associated polycomb group protein with transcriptional repressive activities, regulates early events in embryonic cell differentiation, we created hESC lines that constitutively express shRNAs directed against L3MBTL1. The L3MBTL1 knockdown (KD) hESCs maintained normal morphology, proliferation, cell cycle kinetics, cell surface markers, and karyotype after 40 passages. However, under conditions that promote spontaneous differentiation, the L3MBTL1 KD cells differentiated into a relatively homogeneous population of large, flat trophoblast-like cells, unlike the multilineage differentiation seen with the control cells. The differentiated L3MBTL1 KD cells expressed numerous trophoblast markers and secreted placental hormones. Although the L3MBTL1 KD cells could be induced to differentiate into various embryonic lineages, they adopted an exclusive trophoblast fate during spontaneous differentiation. Our data demonstrate that depletion of L3MBTL1 does not affect hESC self-renewal, rather it enhances differentiation toward extra-embryonic trophoblast tissues. FAU - Hoya-Arias, Ruben AU - Hoya-Arias R AD - Molecular Pharmacology and Chemistry Program, Sloan-Kettering Institute, Memorial Sloan-Kettering Cancer Center, New York, New York 10065, USA. FAU - Tomishima, Mark AU - Tomishima M FAU - Perna, Fabiana AU - Perna F FAU - Voza, Francesca AU - Voza F FAU - Nimer, Stephen D AU - Nimer SD LA - eng GR - R01 CA102202/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20110403 PL - United States TA - Stem Cells Dev JT - Stem cells and development JID - 101197107 RN - 0 (Antigens, Differentiation) RN - 0 (BMP4 protein, human) RN - 0 (Bone Morphogenetic Protein 4) RN - 0 (Chromosomal Proteins, Non-Histone) RN - 0 (L3MBTL1 protein, human) RN - 0 (Recombinant Proteins) RN - 0 (Repressor Proteins) RN - 0 (Tumor Suppressor Proteins) RN - 147336-22-9 (Green Fluorescent Proteins) SB - IM MH - Antigens, Differentiation/genetics/metabolism MH - Bone Morphogenetic Protein 4/pharmacology/physiology MH - *Cell Differentiation/drug effects MH - Cell Line MH - Cell Proliferation MH - Cell Shape MH - Chromosomal Proteins, Non-Histone/*deficiency/genetics MH - Coculture Techniques MH - Ectoderm/*cytology MH - Embryonic Stem Cells/*physiology MH - Gene Expression MH - Gene Knockdown Techniques MH - Green Fluorescent Proteins/metabolism MH - Humans MH - Microscopy, Fluorescence MH - RNA Interference MH - Recombinant Proteins/metabolism MH - Repressor Proteins MH - Trophoblasts/*cytology MH - Tumor Suppressor Proteins PMC - PMC3202892 EDAT- 2011/02/24 06:00 MHDA- 2012/02/18 06:00 PMCR- 2012/11/01 CRDT- 2011/02/24 06:00 PHST- 2011/02/24 06:00 [entrez] PHST- 2011/02/24 06:00 [pubmed] PHST- 2012/02/18 06:00 [medline] PHST- 2012/11/01 00:00 [pmc-release] AID - 10.1089/scd.2010.0437 [pii] AID - 10.1089/scd.2010.0437 [doi] PST - ppublish SO - Stem Cells Dev. 2011 Nov;20(11):1889-900. doi: 10.1089/scd.2010.0437. Epub 2011 Apr 3.