Filters
Technology
Platform
GSE15232
Mus musculus
6 Downloadable Samples
Description
The regulation of multipotent cardiac progenitor cell (CPC) expansion and subsequent differentiation into cardiomyocytes, smooth muscle, or endothelial cells is a fundamental aspect of basic cardiovascular biology and cardiac regenerative medicine. However, the mechanisms governing these decisions remain unclear. Here, we show that Wnt/-Catenin signaling, which promotes expansion of CPCs, is negatively regulated by Notch1-mediated control of phosphorylated -Catenin accumulation within CPCs, and that Notch1 activity in CPCs is required for their differentiation. Notch1 positively, and -Catenin negatively, regulated expression of the cardiac transcription factors, Isl1, Myocd and Smyd1. Surprisingly, disruption of Isl1, normally expressed transiently in CPCs prior to their differentiation, resulted in expansion of CPCs in vivo and in an embryonic stem (ES) cell system. Furthermore, Isl1 was required for CPC differentiation into cardiomyocyte and smooth muscle cells, but not endothelial cells. These findings reveal a regulatory network controlling CPC expansion and cell fate that involve unanticipated functions of -Catenin, Notch1 and Isl1 that may be leveraged for regenerative approaches involving CPCs.
Publication Title
A regulatory pathway involving Notch1/beta-catenin/Isl1 determines cardiac progenitor cell fate.
Sample Metadata Fields
Specimen part
View Samples- Mus musculus
- 17 Downloadable Samples
Description
Stem cells reside in specific niches providing stemness-maintaining environments. Thus, the regulated migration from these niches is associated with differentiation onset. However, mechanisms retaining stem cells in their niche remain poorly understood. Here, we show that the epigenetic regulator lysine-specific demethylase 1 (Lsd1) organises the trophoblast niche of the early mouse embryo by coordinating migration and invasion of trophoblast stem cells (TSCs). Lsd1 deficiency leads to the depletion of the stem cell pool resulting from precocious migration of TSCs.
Publication Title
Lysine-specific demethylase 1 regulates differentiation onset and migration of trophoblast stem cells.
Sample Metadata Fields
Specimen part, Time
View Samples- Mus musculus, Homo sapiens
- 10 Downloadable Samples
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
GATA4-dependent organ-specific endothelial differentiation controls liver development and embryonic hematopoiesis.
Sample Metadata Fields
Specimen part, Cell line
View Samples