In previous studies, human dental pulp stem cells (hDPSCs) were mainly isolated from adults. In this manuscript, we tried characterization of hDPSCs isolated from an earlier developmental stage to evaluate potential usage of these cells for tissue regenerative therapy. hDPSCs isolated at the crown-completed stage showed a higher proliferation rate than those isolated at the later stage. When the cells from either group were cultured in medium promoting differentiation towards cells of the osteo/odontoblastic lineage, both became alkaline phosphatase positive, produced calcified matrix, and were also capable of forming dentin-like matrix on scaffolds in vivo. However, during long-term passage, these cells underwent a change in morphology and lost their differentiation ability. The results of a DNA array experiment showed that the expression of a number of genes, such as WNT16, was markedly changed with increasing number of passages, which might have caused the loss of their characteristics as hDPSCs.
Characterization of dental pulp stem cells of human tooth germs.
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View SamplesRecent studies indicated that iPSCs retain an epigenetic memory relating to their cell of origin that affected their properties and their functions as PSCs.
Modeling neurological diseases with induced pluripotent cells reprogrammed from immortalized lymphoblastoid cell lines.
Specimen part, Subject
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Transcription Factor EB Controls Metabolic Flexibility during Exercise.
Age, Specimen part
View SamplesIn order to identify the effects of the absence of Tcfeb on the muscle transcriptome, we performed Affymetrix Gene-Chip hybridization experiments for the KO mice as compared with wt mice
Transcription Factor EB Controls Metabolic Flexibility during Exercise.
Age, Specimen part
View SamplesWe assessed how lack of ISG15 influences the levels of transcripts after IFNa stimulation.
Human intracellular ISG15 prevents interferon-α/β over-amplification and auto-inflammation.
Specimen part
View SamplesMicroarray technology has had a profound impact on gene expression research. Some studies have questioned whether similar expression results are obtained when the same RNA samples are analyzed on different platforms.
The MicroArray Quality Control (MAQC) project shows inter- and intraplatform reproducibility of gene expression measurements.
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