Conversely, the expression of lineage markers characteristic for all three germ-layers (ectoderm: Fgf5, mesoderm: brachyury, endoderm: FoxA2) and trophectoderm (Cdx2) were strongly upregulated, signifying differentiation of the cells (Fig. 3F).
CK14+, Sox2+ and Lgr5+ epithelium stem cells from the cervical loop enhanced amelogenin and ameloblastin expression upon BMP4 or FGF3 stimulation, signifying their differentiation towards ameloblast-like cells, whereas mesenchyme stem/progenitor cells upon BMP4, BMP7 and Wnt3a treatment robustly expressed Dspp, a hallmark of odontoblastic differentiation.
De-differentiation signifies the withdrawal of cells from a given differentiated state into a stem cell-like state, which confers pluripotency, a process that precedes re-entry into the cell cycle [3].
While expression of certain gene or protein marker that can be fluorescently labeled represents a conventional readout, it does not by itself signify successful cell differentiation.
Acquisition of CD86 is an important end point of DC differentiation, signifying full co-stimulatory capacity (Thomas and Lipsky, 1996; Hart, 1997; McLellan et al, 1999).
On the other hand, when the names are used only of God as cause, the prefixes may be left off, since the causality of God is already a procession into the differentiation properly signified by each of the different names.
The emergence of increasingly more specialized phenotypes of individual cells characterized those steps, signifying progress in the cellular differentiation.
By contrast, <30% of the donor MSCs treated with noggin were MEF2- positive (Fig. 6f), signifying that BMP suppression could reduce cardiomyogenic differentiation of the MSCs in vivo.
The attainment of neural fate thus underscored the involvement of LIF in the undifferentiated ES cell maintenance, the absence of which led to the differentiation [21] and in parallel signified the fact that, the neural differentiation from ES cells might be a preferred event.
This observation was speculated to signify that early childhood nutrition directs stem cell differentiation and programs skeletal development.
