Objectives: Sex hormone receptors are reported to be present in human dental pulp (HDP) cells. The purpose of this study was to examine the biological significance of estrogen and androgen receptors (ER and AR, respectively) in HDP cells. Design: We isolated HDP cells expressing ER- and AR-mRNAs and investigated the expression status of the receptors and the response to sex hormones in the cells. Results: HDP cells expressing ER- and/or AR-mRNAs had the ability to form alizarin red S-positive nodules in which calcium and phosphorus were deposited in vitro and to differentiate into odontoblasts-like cells and dentin-like tissue in vivo. Individual clones isolated from HDP cells exhibited a different expression pattern of mRNA for ER and AR. Some clones expressed ER- and/or ER-mRNAs and the others coexpressed ER- and AR-mRNAs. Using the Ingenuity software, we found that 17-estradiol (E2) and dihydrotestosterone (DHT) could act directly on HDP cells through ER- or androgen signaling-mediated mechanisms. E2 or DHT stimulated the mRNA expression for genes related to odontogenesis of dentin-containing teeth and odontoblast differentiation, suggesting that ER and AR in HDP cells may be involved in dentinogenesis. Conclusions: Our findings provide new insights into the biological significance of sex hormone receptors in HDP cells.
Expression status of mRNA for sex hormone receptors in human dental pulp cells and the response to sex hormones in the cells.
Sex, Specimen part, Treatment
View SamplesCancer cells consume large amounts of glucose because of their specific metabolic pathway. However, cancer cells exist in tumor tissue where glucose is insufficient. To survive, cancer cells likely have the mechanism to elude their glucose addiction. Here we show that functional mitochondria are essential if cancer cells are to avoid glucose addiction.
Mitochondria regulate the unfolded protein response leading to cancer cell survival under glucose deprivation conditions.
Disease, Cell line, Time
View SamplesComparison of gene expression profiles in whole blood collected from pregnant and non-pregnant females.
Placenta-derived fetal specific mRNA is more readily detectable in maternal plasma than in whole blood.
Sex, Specimen part
View SamplesWe performed a global analysis of both miRNAs and mRNAs expression across sixteen human cell lines and extracted negatively correlated pairs of miRNA and mRNA which indicate miRNA-target relationship. The many of known-target of miR-124a showed negative correlation, suggesting our analysis were valid. We further extracted physically relevant miRNA-target gene pairs, applying computational target prediction algorism with inverse correlations of miRNA and mRNA expression. Furthermore, Gene Ontology-based annotation and functional enrichment analysis of the extracted miRNA-target gene pairs indicated putative functions of miRNAs.
Global correlation analysis for micro-RNA and mRNA expression profiles in human cell lines.
No sample metadata fields
View SamplesA protocol was established for the derivation of Schwann cell-like cells from human BMSCs. The commitment to the Schwann cell fate was acquired by Schwann cell-like cells in co-culture with rat DRG neurons. Microarray analysis provided evidence that the human BMSC-derived Schwann cells were functionally mature.
Directed Differentiation of Human Bone Marrow Stromal Cells to Fate-Committed Schwann Cells.
Specimen part
View SamplesExcessive MS is known to result in disappearance of the alveolar hard line, enlargement of thePDL space, and destruction of alveolar bone, leading to occlusal traumatism. The regulatory role of MS is believed to play a critical role in the process of alveolar bone remodeling. However, little is known about the effect of excessive MS on expression of osteoclastogenesis-related genes in human PDL cells.
Hyperocclusion stimulates osteoclastogenesis via CCL2 expression.
Age, Specimen part
View SamplesIsogenic UPF1+ or upf1- yeast strains were treated with 10 ug/ml thiolutin to inhibit global transcription. Targets were obtained from 16 time points: 0, 2, 4, 6, 8, 10, 12, 15, 20, 25, 30, 35, 40, 45, 50, 60 minutes after transcription inhibition. Three biological replicates of each were generated and the expression profiles were determined using Affymetrix YG-S98 arrays. Comparisons between the sample groups allow the identification of genes with differential expression over time between UPF1+ and upf1-.
Impact of nonsense-mediated mRNA decay on the global expression profile of budding yeast.
No sample metadata fields
View SamplesThe differences of clinical characteristics in complex seizures induced by influenza A(H1N1)pdm09 and rotavirus gastroenteritis are well known, but the pathogenic mechanisms remain unclear. We analyzed the gene expression profiles in the peripheral whole blood cells isolated from pediatric patients using an Affymetrix oligonucleotide microarray.
Gene expression analysis in children with complex seizures due to influenza A(H1N1)pdm09 or rotavirus gastroenteritis.
Sex, Age, Specimen part, Disease, Disease stage, Subject
View SamplesMicroRNAs are small non-coding RNA species, some of which are playing important roles in cell differentiation. However, the level of participations of microRNAs in epithelial cell differentiation is largely unknown. Here, we found that expression levels of four microRNAs (miR-210, miR-338-3p, miR-33a and miR-451) were significantly increased in differentiated stage of T84 cells, compared with undifferentiated stage. Additionally, we demonstrate that miR-338-3p and miR-451 contribute to the formation of epithelial basolateral polarity by facilitating translocalization of beta1 integrin to the basolateral membrane. However, candidate target mRNAs of miR-338-3p and miR-451 and the mechanism behind observed phenomena is uncertain. Then, we performed comprehensive gene expression analysis to identify candidate target mRNAs and understand their mechanisms.
MicroRNA-338-3p and microRNA-451 contribute to the formation of basolateral polarity in epithelial cells.
Cell line, Treatment, Time
View SamplesTo clarify the downstream signal pathway of EML4-ALK in NSCLC, we performed Affymetrix GeneChip analysis using ALK inhibitor CH5424802-treated NCI-H2228 xenograft tumors, and comprehensively characterized the gene expression regulated by inhibition of activated ALK.
CH5424802, a selective ALK inhibitor capable of blocking the resistant gatekeeper mutant.
Specimen part
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