L3MBTL1 Deficiency Directs the Differentiation of Human Embryonic Stem Cells Toward Trophectoderm
| Autor: | Stephen D. Nimer, Francesca Voza, Ruben Hoya-Arias, Fabiana Perna, Mark J. Tomishima |
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| Rok vydání: | 2011 |
| Předmět: |
Chromosomal Proteins
Non-Histone Cellular differentiation Green Fluorescent Proteins Population Gene Expression Bone Morphogenetic Protein 4 Biology Cell Line Original Research Reports Ectoderm medicine Humans education Cell Shape Embryonic Stem Cells reproductive and urinary physiology Cell Proliferation education.field_of_study Cluster of differentiation Tumor Suppressor Proteins Trophoblast Cell Differentiation Cell Biology Hematology Antigens Differentiation Molecular biology Embryonic stem cell Coculture Techniques Recombinant Proteins Trophoblasts Repressor Proteins medicine.anatomical_structure Microscopy Fluorescence Bone morphogenetic protein 4 Cell culture Gene Knockdown Techniques embryonic structures RNA Interference Stem cell Developmental Biology |
| Zdroj: | Stem Cells and Development. 20:1889-1900 |
| ISSN: | 1557-8534 1547-3287 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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