Filip J. Wymeersch

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Clonal lineage information is fundamental in revealing cell fate choices. Using genetic single-cell labeling in utero, we investigated lineage segregations during anteroposterior axis formation in mouse. We show that while endoderm and surface ectoderm segregate during gastrulation, neural ectoderm and mesoderm share a common progenitor persisting through(More)
During gastrulation, epiblast cells are pluripotent and their fate is thought to be constrained principally by their position. Cell fate is progressively restricted by localised signalling cues from areas including the primitive streak. However, it is unknown whether this restriction accompanies, at the individual cell level, a reduction in potency.(More)
Cells of the spinal cord and somites arise from shared, dual-fated precursors, located towards the posterior of the elongating embryo. Here we show that these neuromesodermal progenitors (NMPs) can readily be generated in vitro from mouse and human pluripotent stem cells by activating Wnt and Fgf signalling, timed to emulate in vivo development. Similar to(More)
The rostrocaudal (head-to-tail) axis is supplied by populations of progenitors at the caudal end of the embryo. Despite recent advances characterising one of these populations, the neuromesodermal progenitors, their nature and relationship to other populations remains unclear. Here we show that neuromesodermal progenitors are a single Sox2(low)T(low) entity(More)
Embryonic stem (ES) cells have the potential to differentiate into various cell types of the three germ layers. They are therefore a useful cell source for transplantation and tissue engineering. In the present paper, we studied the influences of ascorbic acid (AA), dexamethasone (Dex), and 17β-estradiol (E2) on the osteogenic differentiation of ES cells.(More)
Pluripotent cells are present in early embryos until the levels of the pluripotency regulator Oct4 drop at the beginning of somitogenesis. Elevating Oct4 levels in explanted post-pluripotent cells in vitro restores their pluripotency. Cultured pluripotent cells can participate in normal development when introduced into host embryos up to the end of(More)
Transcriptional networks, regulated by extracellular signals, control cell fate decisions and determine the size and composition of developing tissues. One example is the network controlling bipotent neuromesodermal progenitors (NMPs) that fuel embryo elongation by generating spinal cord and trunk mesoderm tissue. Here, we use single-cell transcriptomics to(More)
cesses. During tooth development, c-Myb expression has been investigated only at the bud stage of the first mouse molar tooth germs (Ess et al., 1999. Oncogene 18, 1103–1111). Therefore, this investigation aimed to detect c-Myb expression at protein level by immunohistochemistry and to correlate the c-Myb temporospatial pattern with apoptosis and(More)
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