This assay detects cells that are able to give rise to new colonies containing a majority of cells that
express stem cell markers.
Not exact matches
Previous research shows human induced pluripotent
stem cells (hiPSCs)-- generated directly from adult
cells — can
express markers for a wide variety of
cells, including those that secrete NP.
Whitehead Institute researchers have determined that the transcription factor Nanog, which plays a critical role in the self - renewal of embryonic
stem cells, is
expressed in a manner similar to other pluripotency
markers.
Mouse embryonic
stem cells injected into rat brains
express the AHD2 protein
marker (yellow) characteristic of
cells lost in Parkinson's disease.
Significantly,
cells with reduced mtDNA became self - renewing and
expressed specific
cell surface
markers characteristic of breast cancer
stem cells.
When transplanted to the subretinal space of mice lacking functional photoreceptors, human embryonic
stem cells directed toward a retinal lineage integrate into the outer nuclear layer,
express photoreceptor
markers, and restore a light response as determined by the electroretinogram (ERG)[5].
Perivascular
cells, including pericytes in the smallest blood vessels (e.g., microvessels) and ARCs around larger ones,
express mesenchymal
stem cell markers and bear a multi-differentiation fate potential (differentiate into osteoblasts, chondrocytes, adipocytes, smooth muscle
cells and myocytes) similar to that documented for MSCs in vitro.
This gave a mixed population of
cells with 20 %
expressing CD34, a hematopoietic
stem cell marker, with some co-expression of endothelial
cell markers (CD31, Flk1, and VE - cadherin).
Solid tumours are reported to possess a sub set of
cells called Side Population
expressing various
stem like
cell markers, self - renewal capacity and ability to give rise to differentiated
cells [23, 24].
Hematopoietic
stem cells express the
markers CD34 and CD133 and can repopulate a myeloablated recipient after allogeneic or autologous transplantation.
The scientists had strategically inserted these foreign DNA «
markers» at particular points along the genome, next to genes
expressed only in embryonic
stem cells.
With this reporter we split ES
cell cultures into two fractions that both
express certain
stem cell markers but only one of which
expresses low levels of an endodermal
marker gene.
(B) Percent of sorted single HES3
cells in (A)
expressing stem or lineage
markers according to level of surface
marker expression.
The GFP+HPC s
expressed a whole range of leukocyte and
stem cell markers including CD45, CD11b, CD31; relatively low levels of MHC class I; and no class II antigens, as we recently reported [17].
We derived a fibroblast line from a skin biopsy from a healthy adult male (HUF1)(Figure 1A) and used immunocytochemistry to characterize the expression of
cell surface
markers commonly
expressed on pluripotent
stem cells (Figure 1B, C and D).
We have also shown that ΔNp63, a
stem cell marker, is not
expressed in the human corneal endothelium.
These iPS
cells have a normal karyotype, demonstrate telomerase activity and
express embryonic
stem (ES)
cell surface
markers.
Holoclones
express high levels of
stem and progenitor
cell markers CD44, α2β1 integrin, and β - catenin.
Oct - 4 is most consistently
expressed of the pluripotency genes that we have studied, and it is switched off only in populations that have lost other measurable features of pluripotency, such as
stem cell surface
marker expression and the capacity for self - renewal.
(B) Percent of isolated single
cells expressing stem or lineage
markers according to location with the colony.
The fact that all three
markers are
expressed in essentially all
cells in the holoclones suggests that these three molecules are probably
expressed in both cancer
stem and progenitor
cells.
In support, PC3
cell holoclones, but not meroclones and paraclones,
express three well - established
stem and progenitor
cell markers.