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Genome wide identification of potential odontogenic genes involved in the dental epithelium-mesenchymal interaction during early odontogenesis

ABSTRACT: To explore the the gene profile during epithelium-mesenchymal interaction in early odontogenesis. Weperformed gene expression profiling analysis using data obtained from RNA-seq of the dental mesenchymal and epithelium group at two different timepoints, E11.5 and E13.5 respectively.

ORGANISM(S): Mus musculus

PROVIDER: GSE209968 | GEO | 2022/08/22

REPOSITORIES: GEO

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Down-regulated Genes in Mouse Dental Papillae and Pulp

Project description:Goal of experiment: Identify genes down-regulated between pre- and post-natal stages in mouse dental papillae. Epithelial-mesenchymal interaction is very important during tooth development, and many genes are associated with odontogenesis. The capacity for odontogenesis in mouse dental papillae disappears between the pre- and post-natal stages. We hypothesized that genes involved in odontogenesis were down-regulated in dental papillae between these stages. To test this hypothesis, we investigated and compared gene profiles in pre- and post-natal stage dental papillae with the GeneChip® Mouse Genome 430 2.0 Array.

2010-06-05 | GSE19488 | GEO

Characterization of odontogenic differentiation from human dental pulp stem cells using TMT-based proteomic analysis

Project description:The repair of dental pulp injury relies on the odontogenic differentiation of dental pulp stem cells (DPSCs). To better understand the odontogenic differentiation of DPSCs and identify proteins involved in this process, tandem mass tags (TMTs) coupled with liquid chromatography-tandem mass spectrometry (LC-MS/MS) were applied to compare the proteome profiles of induced and control DPSCs. The proteins expressed during osteogenic differentiation of human DPSCs were profiled using the TMT method combined with LC-MS/MS analysis. The identified proteins were subjected to gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis. Then a protein-protein interaction (PPI) network was constructed. Two selected proteins were confirmed by western blot (WB) analysis. A total of 223 proteins that were differentially expressed were identified. Among them, 152 proteins were significantly upregulated and 71 were downregulated in the odontogenic differentiation group compared with the control group. On the basis of biological processes in GO, the identified proteins were mainly involved in cellular processes, metabolic processes, and biological regulation, which connected with the signaling pathways highlighted by KEGG pathway analysis. PPI networks showed that most of the differentially expressed proteins were implicated in physical or functional interaction. The protein expression levels of FBN1 and TGF-β2 validated by WB were consistent with the TMT analysis. This is the first proteomic analysis of human DPSC odontogenesis using a TMT method. We identified many new differentially expressed proteins that are potential targets for pulp-dentin complex regeneration and repair.

2021-09-09 | PXD021279 | Pride

Effects of glucose on gene expression of human dental pulp cells under odontogenic differentiation

Project description:Human dental pulp cells have the ability to differentiate into odontoblast cells under various stimuli. The objective of our study is to investigate the efffects of glucose on gene expression of human dental pulp cells that under go odontogenic differentiation. Expression microarray were performed to identify the genes that were affected by short-term and long-term exposure to high glucose levels.

2022-03-31 | GSE112144 | GEO

Single-cell RNA-sequencing from mouse incisor reveals dental epithelial cell-type specific genes

Project description:Dental epithelial stem cells give rise to all dental epithelial cell types, inner enamel epithelium, outer enamel epithelium, ameloblasts, stratum intermedium and stellate reticulum to form enamel. These all types of epithelial cells have distinct roles and are essential for enamel formation. These cell types are conventionally classified by their cell shape, however, the transcriptome and biological roles of each cell types are not fully understood. Here, we used single-cell RNA-sequencing to clarify the heterogeneity of dental epithelial cell types. Unbiased clustering of 6260 single-cells from post-natal day 7 mouse incisors are classified into 4 dental epithelial and 2 mesenchymal populations; 2 clusters of ameloblast, IEE/OEE and SI/SR clusters. Secretory-stage of ameloblasts were divided into Dspp+ or Ambn+ ameloblast. Pseudo-time analysis indicated that Dspp+ ameloblast differentiate into Ambn+ ameloblast. Further, Dspp and Ambn would be stage-specific markers of ameloblast. Gene Ontology (GO) analyses of each clusters indicate potent roles of cell types; OEE in regulation of tooth size and SR in transport of nutrition. Moreover, we identified novel dental epithelial cell marker genes, Pttg1, Atf3, Cldn10 and Krt15. These results provide a resource of transcriptome data in dental cells and contribute further molecular analyses of enamel formation.

2020-09-23 | GSE146855 | GEO

Expression profiling of FACS-purified fetal germ cells

Project description:We used microarrays to profile global gene expression changes of Pou5f1-GFP-positive germ cells between E11.5 to E15.5. Germ cells were FACS-purified from gonadal single cell suspension based on Pou5f1-GFP expression. Three timepoints were included in this study: E11.5 (male/female), E13.5 (male) and E15.5 (male). For each timepoint, three biological replicates were analyzed. The Pou5f1-GFP-negative (non-germ cell) fraction of E13.5 (male) gonads was also included as a control.

2013-01-25 | E-GEOD-38126 | biostudies-arrayexpress

Fabrication of hard tissue using dental cells derived from hiPSCs

Project description:To analyze the transcriptomic differences between hiPSC and hiPSC-derived dental epithelial cells (hDEC), and between hiPSC and hiPSC-derived dental mesenchymal cells (hDMCs)

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Project description:Knockdown of endogenous GDF11 downregulated the odontogenic differentiation of human dental pulp stem cells (hDPSCs). We performed RNA-seq analysis on hDPSCs transfected with GDF11 small interfering RNA (siRNA) and control siRNA after 7 days of odontogenic induction, in order to investigate the underlying mechanisms of endogenous GDF11 regulating odontogenic differentiation in hDPSC.

2020-06-03 | GSE151435 | GEO

Adult Dental Epithelial Stem Cell-Derived Organoids Deposit Hydroxylapatite Biomineral

Project description:Ameloblasts are specialized cells derived from the dental epithelium that produce enamel, a hierarchically structured tissue comprised of highly elongated hydroxylapatite (OHAp) crystallites. Because enamel is acellular and has limited capacity to heal, regenerative technologies are highly desirable, yet have remained largely out of reach. This is in part due to the challenges of synthesizing crystallites with similar properties and assembling them in a mechanically robust structure. Herein, we demonstrate the ability to generate mineralizing dental epithelial organoids (DEOs) from adult dental epithelial stem cells (aDESCs) isolated from mouse incisor tissues. DEOs expressed ameloblast markers, could be maintained for more than five months (11 passages) in vitro in media containing modulators of Wnt, Egf, Bmp, Fgf and Notch signaling pathways, and were amenable to cryostorage. When implanted underneath murine kidney capsules, organoids produced OHAp crystallites similar in composition, size, and shape to mineralized dental tissues, including some enamel-like elongated crystals. DEOs are thus a powerful in vitro model for the development of the dental epithelium and enamel, and an important first step towards regrowth or replacement of enamel.

2023-11-18 | GSE220686 | GEO

Comparative transcriptome profiles of human dental pulp cells from maxillary and mandibular teeth

Project description:PITX1 had a significantly higher expression in the lower teeth compared to the upper teeth and this difference in PITX1 level was more evident in the molars compared to premolars, consistent with data in mouse developing teeth. These show that the differential gene expression during odontogenesis can continue to exist in mature teeth. We suggest that an in vitro study of dental pulp cells should take the differential gene profiles between the mandibular and maxillary teeth into consideration. The knowledge about gene profiling and pathways in mature teeth paves a way to explore a more precise treatment approach in regenerative dentistry.

2022-06-01 | GSE193471 | GEO

Remission for loss of odontogenic potential in a new micromilieu in vitro

Project description:During embryonic organogenesis, the odontogenic potential resides in dental mesenchyme from the bud stage until birth. Mouse dental mesenchymal cells (mDMCs) isolated from the inductive dental mesenchyme of developing molars are frequently used in the context of tooth development and regeneration. cultured mDMCs could retain the odontogenic potential for 24 h with a ratio of 60% for tooth formation, but mDMCs were incapable of supporting tooth formation after more than 24 h in culture. To reveal the underlying mechanism of the impairment of odontogenic potential, we generated gene expression profiles from mDMCs in culture using RNA-seq.

2016-10-31 | GSE78228 | GEO

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