However, despite the existence of the conserved genetic regulatory circuit for Nanog expression, the possible existence of a species specific regulatory circuit might explain the differential expression profiles of ICM among mammalian species and the differential requirements of cell culture conditions for each species, e.g., differential requirement of the LIF-STAT3 signaling pathway between mESC
and hESC (Ginis et al., 2004).
were induced to differentiate to the neural lineage.
After noticing that pluripotent mESCs
tend to stick together in round colonies while cells on the colony edges in contact with the rigid growth plate tend to differentiate more quickly, the team decided to focus on mESC
mechanics rather than chemistry.
Our cultures of differentiated transplanted cells did not include undifferentiated mESCs
, as suggested by the lack of expression of SSEA1 on day 15.
Caption: FIGURE 5: The spatial link between coilin and fibrillarin in HeLa cells and mouse pluripotent mESCs
before and after neural differentiation.
first performed overexpression of Pax3 gene, which can be activated by treatment with doxycycline in mESCs
, and showed efficient induction of MyoD/Myf5(+) skeletal myoblasts in EB cultures .
Recently, miR-142-3p is reported to balance self-renewal and differentiation in mESCs
via regulating KRAS/ERK signalling .
Focusing on gene expression variability in undifferentiated, isogenic mouse ESCs (mESCs
), a number of pluripotency-related genes have been shown to be expressed heterogeneously and to present temporal fluctuations in mESCs
cultured in standard serum/leukemia inhibitory factor (LIF) medium.
The first attempts to direct myogenic differentiation with forced expression of TFs have been performed using mouse ESCs (mESCs
Remarkably, VitC addition at the early phases of the differentiation process overcomes the loss of cardiomyocyte differentiation ability in fibroblast growth factor receptor 1 (Fgfr1) knockout ([Fgfr1.sup.-/-]) mESCs
(ES-D3 ATCC CRL-1934) were cultured at 37[degrees]C with 5% C[O.sub.2].
During the study, the researchers used mouse embryonic stem cells (mESCs
) as a model for pre-implantation embryos-embryos that have not yet implanted in the wall of the uterus-and compared the toxicity on these cells of cigarette smoke emanating from traditional and harm-reduction brands.