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Comparison between mouse ES/iPS derived neurosphere and mouse primary culture of neurospheres obtained from fetal mouse ganglionic eminence

ABSTRACT: Recent reports have emphasized the pitfalls of iPSC technology including the potential for immunogenicity of transplanted cells. It is serious safety-related concern for iPSC-based cell therapy. However, preclinical data supporting the safety and efficacy of iPSCs are also accumulating. To address the concern of immunogenicity of ESCs/iPSCs or ESCs/iPSCs-derived neurospheres, global gene expression profiles were compared between undifferentiated mouse ESCs (EB3 line), mouse iPSCs (38C2 line), and ESC/iPSC-derived neurosphere and mouse primary culture of neurosphere obtained from fetal mouse ganglionic eminence. Mouse adult sklin fibroblast was used as a control. We used affymetrix microarrays to compare the global gene expression of neurospheres prepared several origins. Keywords: Expression profiling by array

ORGANISM(S): Mus musculus

PROVIDER: GSE31725 | GEO | 2012/03/01

SECONDARY ACCESSION(S): PRJNA145353

REPOSITORIES: GEO

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Comparison between mouse ES/iPS derived neurosphere and mouse primary culture of neurospheres obtained from fetal mouse ganglionic eminence

Project description:Recent reports have emphasized the pitfalls of iPSC technology including the potential for immunogenicity of transplanted cells. It is serious safety-related concern for iPSC-based cell therapy. However, preclinical data supporting the safety and efficacy of iPSCs are also accumulating. To address the concern of immunogenicity of ESCs/iPSCs or ESCs/iPSCs-derived neurospheres, global gene expression profiles were compared between undifferentiated mouse ESCs (EB3 line), mouse iPSCs (38C2 line), and ESC/iPSC-derived neurosphere and mouse primary culture of neurosphere obtained from fetal mouse ganglionic eminence. Mouse adult sklin fibroblast was used as a control. We used affymetrix microarrays to compare the global gene expression of neurospheres prepared several origins. Keywords: Expression profiling by array RNA extracted from neurospheres was hybridized to Affymetrix microarrays.

2012-03-01 | E-GEOD-31725 | biostudies-arrayexpress

Human induced pluripotent stem cells (iPSCs) derived from T-cell compared with that from adult dermal fibroblast (aHDF) [gene expression]

Project description:In this study we determine the transcriptional profile by microarray of iPSCs and iPSC-derived neurospheres generated from T-cells or aHDF by using direct neurosphere method. iPSCs and iPSC-derived tertiary neurospheres generated from T-cells or aHDF subjected to the gene expression microarray analysis.

2016-01-14 | E-GEOD-76830 | biostudies-arrayexpress

Human induced pluripotent stem cells (iPSCs) derived from T-cell compared with that from adult dermal fibroblast (aHDF) [gene expression]

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mRNA expression data from iPSCs, ntESCs and iPSC-nt-ESCs

2011-05-31 | GSE24705 | GEO

mRNA expression data from iPSCs, ntESCs and iPSC-nt-ESCs

Project description:We generated three kinds of genetically identical mouse reprogrammed cells: induced pluripotent stem cells (iPSCs), nuclear transfer embryonic stem cells (ntESCs) and iPSC-nt-ESCs that are established after successively reprogramming of iPSCs by nuclear transfer (NT). NtESCs show better developmental potential than iPSCs, whereas iPSC-nt-ESCs display worse developmental potential than iPSCs. We used microarrays to distinguish the gene expression differences among three pluriptoent stem cells and identified that imprinted genes had a similar expression pattern in iPSCs and iPSC-nt-ESCs. We sought to obtain genetic identical pluripotent stem cell lines in order to minimize genetic variations among different reprogrammed cells. To that end, we established a genetically homogenous secondary reprogramming system, in which mouse embryonic fibroblasts (MEFs) carrying doxycycline (dox)-inducible lentiviruses expressing Oct4, Sox2, Klf4 and c-Myc were isolated and used as donors for different reprogramming experiments. We generated iPSCs after plating MEFs in the presence of dox in ES culture conditions, and then derived ntESCs after transplantation of the nucleus from the same MEFs into enucleated oocyte. Furthermore, we successively reprogrammed iPSCs by means of NT and established a set of nt-iPSC lines. Pluripotent stem cells generated from different reprogramming strategies were for RNA extraction and hybridization on Affymetrix microarrays.

2011-05-31 | E-GEOD-24705 | biostudies-arrayexpress

Quantitative profiling of axonal guidance proteins during the differentiation of human neurospheres

Project description:Axon guidance is required for the establishment of brain circuits. Whether much of the molecular basis of axon guidance is known from animal models, the molecular machinery coordinating axon growth and pathfinding in humans remains to be elucidated. The use of induced pluripotent stem cells (iPSC) from human donors has revolutionized in vitro studies of the human brain. iPSC can be differentiated into neuronal stem cells which can be used to generate neural tissue-like cultures, known as neurospheres, that reproduce, in many aspects, the cell types and molecules present in the brain. Here, we analyzed quantitative changes in the proteome of neurospheres during differentiation. Relative quantification was performed at early time points during differentiation using iTRAQ-based labeling and LC-MS/MS analysis. We identified 6438 proteins, from which 433 were downregulated and 479 were upregulated during differentiation. We show that human neurospheres have a molecular profile that correlates to the fetal brain. During differentiation, upregulated pathways are related to neuronal development and differentiation, cell adhesion and axonal guidance whereas cell proliferation pathways were downregulated. We developed a functional assay to check for neurite outgrowth in neurospheres and confirmed that neurite outgrowth potential is increased after 10 days of differentiation and is enhanced by increasing cyclic AMP levels. The proteins identified here represent a resource to monitor neurosphere differentiation and coupled to the neurite outgrowth assay can be used to functionally explore neurological disorders using human neurospheres as a model.

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Defining Differentiated Methylation Regions Especial for Pluripotency Acquisition and Maintenance in Human Stem Cell

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Genome wide gene expression profiling demonstrated that mouse ESC and iPSC differentiated osteoblast progenitors resemble osteoblasts

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2018-05-01 | GSE110434 | GEO

Genome-wide gene expression patterns comparing various pluripotent stem cells.

Project description:Analysis of gene expression levels of whole transcripts obtained from two WA09 ES cell cultures, two dermal fibroblast cultures, two lines each for L-iPSCs, F-iPSCs and LF-iPSCs. Total RNA obtained from WA09 ESCs, the dermal fibroblasts from which all iPSCs in the microarray study were derived, two F-iPSC clones, two L-iPSC clones and two LF-iPSC clones on day 100-120 were compared.

2012-06-30 | E-GEOD-37077 | biostudies-arrayexpress

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Project description:Pluripotent cells can be derived from somatic cells by either overexpression of defined transcription factors (resulting in induced pluripotent stem cells (iPSCs)) or by nuclear transfer or cloning (resulting in NT-ESCs). To determine whether cloning further reprograms iPSCs, we used iPSCs as donor cells in nuclear transfer experiments. An iPSC clone derived from tail-tip fibroblasts using adenoviral vectors was used as donor cell in nuclear transfer experiments. RNA was isolated from both parental iPSC clone and derivative NT-ESCs lines and analyzed.

2010-05-27 | E-GEOD-20575 | biostudies-arrayexpress

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