The generation of specific types of neurons from stem cells offers important opportunities in regenerative medicine. However, future applications and proper verification of cell identities will require stringent ways to generate homogenous neuronal cultures. Here we show that under permissive culturing conditions individual transcription factors can induce a desired neuronal lineage from virtually all expressing cells by a mechanism resembling developmental binary cell fate switching. Such efficient selection of cell fate resulted in remarkable cellular enrichment that enabled global gene expression validation of generated neurons and identification of novel features in the studied cell lineages. Several sources of stem cells have a limited competence to differentiate into e.g. dopamine neurons. However, we show that the combination of factors that normally promote either regional or dedicated neuronal specification can overcome limitations in cellular competence and promote efficient reprogramming also in more remote neural contexts, including human neural progenitor cells.
Transcription factor-induced lineage selection of stem-cell-derived neural progenitor cells.
Specimen part, Cell line
View SamplesThe aim of this work was to determine the genes and mechanisms involved in IL-9- and CCL1-mediated protection against glucocorticoid-induced apoptosis. We made the hypothesis that the expression of the really critical mediators could be regulated in a reciprocal way by Dex on the one hand and anti-apoptotic cytokines such as IL-9 and CCL1 on the other hand.Therefore, we performed a comprehensive study of the genes expressed by BW5147 cells stimulated with or without Dex, IL-9 and CCL1, taking advantage of the Affymetrix microarray technology.
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View SamplesES cell-derived neurons of forebrain identity were isolated by magnetic sorting, cultured for 7 days and transduced with either Nurr1 or eGFP lentivirus. After an additional 12 h in culture, mRNA was isolated and subjected to microarray analysis.
NR4A orphan nuclear receptors as mediators of CREB-dependent neuroprotection.
Specimen part
View SamplesTEM differentiated in vitro were exposed to treatments increasing or decreasing their proangiogenic activity. We used microarrays to identify the genes differentially expressed among the treatments and associated to changes in TEM proangiogenic and protumoral functions.
TIE-2 and VEGFR kinase activities drive immunosuppressive function of TIE-2-expressing monocytes in human breast tumors.
Specimen part, Treatment
View SamplesHere we present gene expression analysis data on two vehicle treated and two CC214-2 (an mTOR kinase inhibitor) resistant GlioBlastoma Multiforme 39 (GBM39) xenografts, showing that the expressioin profiles of 88 genes are significantly different between the two groups.
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Specimen part
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