Homo sapiens
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ABSTRACT:
PROVIDER: PRJNA275856 | ENA |
REPOSITORIES: ENA
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Project description:Dental pulp cells (DPCs) are a promising source of transplantable cells in regenerative medicine. However, DPCs have not been fully characterized at the molecular level. The purpose of this study was to distinguish DPCs from various source-derived mesenchymal stem cells, fibroblasts, and other cells by the expression of several DPC-characteristic genes. DPCs were isolated from human pulp tissues by the explant method, or the enzyme digestion method, and maintained with media containing 10% serum or 7.5% platelet-rich plasma. RNA was isolated from the cells and from dental pulp tissue specimens. The mRNA levels were determined by DNA microarray and quantitative real-time PCR analyses. The msh homeobox1 (MSX1), msh homeobox 2 (MSX2), T-box 2 (TBX2), and ectonucleoside triphosphate diphosphohydrolase 1 (ENTPD1) mRNA levels in DPCs were higher than the levels found in the following cells: mesenchymal stem cells, derived from bone marrow, synovium, and adipose tissue; and in cells such as fibroblasts, osteoblasts, adipocytes, and chondrocytes. The enhanced expression in DPCs was consistently observed irrespective of donor age, tooth type, and culture medium. Moreover, these genes were expressed at high levels in dental pulp tissue in vivo. We conclude that this gene set may be useful in the identification and characterization of DPCs in basic studies and pulp cell-based regeneration therapy.
2016-06-20 | GSE66084 | GEO
Project description:The homeoprotein Msx1 and Msx2 involved in normal skeletal muscle development and also contribute to muscle defects if altered during development. Deciphering the downstream signaling networks of Msx1 and Msx2 in myoblasts differentiation will help us to understand the molecular events that contribute to muscle defects. The objective of this study was to evaluate the proteomics characteristics in Msx1 and Msx2 mediated myoblasts differentiation, using isobaric tags for the relative and absolute quantification labelling technique (iTRAQ). The results showed that 1535 proteins with quantitative information were obtained. Volcano plots illustrated, in undifferentiated stage, 32 common downstream regulatory proteins for Msx1 and Msx2, 39 specific regulatory proteins for Msx1, and 13 specific for Msx2. While, in differentiated stage, 17 common downstream regulatory proteins for Msx1 and Msx2, 10 specific regulatory proteins for Msx1, and 21 specific for Msx2. Gene ontology, KEGG pathway and protein-protein interaction networks analyses revealed these proteins primarily associated with Arginine and proline metabolism, Glycolysis/Gluconeogenesis, Fatty acid degradation, Metabolism of xenobiotics by cytochrome P450 and Apoptosis. In addition, our data shows Acta1 was probably a core of the downstream regulatory networks of Msx1 and Msx2 in skeletal muscle development. The findings will help us to understand the molecular roles of Msx1 and Msx2 during muscle development as well as regeneration, and to understand the molecular events that contribute to muscle defects.
2023-07-20 | PXD026944 | Pride
Project description:Role of MSX1 in Osteogenic Differentiation of Dental Pulp Cells
| PRJNA287425 | ENA
Project description:Msh homeobox 1 (MSX1) is a transcriptional factor regulating embryonic development of limbs and craniofacial tissues including bone and teeth. The purpose of this study was to investigate contribution of MSX1 to the osteogenic potential and calcification-related phenotypic expression of dental pulp stromal/mesenchymal cells isolated from human teeth. Immunohistochemisitry of a 3 week-old mouse molar showed that MSX1 protein was localized to odontoblasts and pulpal mesenchymal cells at different levels and in different manners depending upon the position of the cells in pulp tissue. When dental pulp stromal/mesenchymal cells were exposed to osteogenesis-induction medium, runt-related transcription factor-2 (RUNX2), bone morphogenetic protein-2 (BMP2), alkaline phosphatase (ALPL) and osteocalcin (OCN) mRNA levels, as well as alkaline phosphatase activity, increased on days 4-12, and, thereafter, the matrix was calcified on day 14. However, knockdown of MSX1 with small interfering RNA abolished this induction of the osteoblast-related gene expression, alkaline phosphatase activity and calcification. Interestingly, DNA microarray and quantative PCR analyses revealed that the MSX1 knockdown induced the sterol regulatory element-binding protein 2 (SREBP2) transcriptional factor and its downstream target genes in cholesterol-synthesis pathway. Inhibition of cholesterol synthesis enhances osteoblast differentiation of various mesenchymal cells. Thus, MSX1 may down-regulate the cholesterol synthesis-related genes to ensure osteoblast differentiation of dental pulp stromal/mesenchymal cells.
2017-01-25 | GSE69992 | GEO
Project description:The mandible of the jawed vertebrate is derived from the mandibular process of the first pharyngeal arch of the early embryo. The first pharyngeal arch consists of cells from all three germ layers, with the neural crest giving rise to all the skeletal elements of the mandible. The correct patterning of the neural crest cells by spatially and temporally controlled expression of various transcription factors during mandible development is crucial for the proper morphogenesis of the lower jaw. Msx family genes encode transcription factors which contain the conserved homeodomain. Among the three members of Msx genes, Msx1 and Msx2 are expressed in the neural crest and epithelium of distal mandibular process during early embryonic development with partially overlapped expression patterns. Msx1-/- mouse embryos develop multiple craniofacial developmental defects including tooth agenesis, cleft palate, and hypoplastic mandible. Although no jaw defects were observed in Msx2-/- mouse embryos, Msx1-/-Msx2-/- mouse embryos exhibit significantly severer mandibular defects compared to Msx1-/- mouse embryos, suggesting a partial functional redundancy between the two genes in mandible development. Besides the direct roles of Msx1 and Msx2 in the development of the mandibular neural crest, the phenotypes of Msx1-/-Msx2-/- may also contributed by secondary impacts from defective pre-migrative neural crest and non-neural crest tissues. Here we performed the gene expression profiling by RNA-seq in the distal mandibular processes of Msx1f/f;Msx2f/f;Hand2-Cre and Msx1f/+;Msx2f/f;Hand2-Cre embryos at E10.75, the former developed distally truncated mandible at later stages while the latter served as morphologically normal littermate control. Comparing the gene expression profiles of the two will give us insight into the functions of Msx1 and Msx2 expressed in mandibular neural crest cells in the development of the mandible.
2024-01-10 | GSE222566 | GEO
Project description:In this study, using mouse molar as the model, we developed a dual fluorescence reporter mouse to precisely track and analyze dental epithelium and mesenchyme at single-cell resolution from early embryonic to postnatal stages. Moreover, we constructed the virtual molar explorer (VMEx) to spatially map 15,967 molar-expressed genes and identified that Msx1+ Sdc1+ marked the developing dental papilla while surrounded by Msx1+ Sdc1- molar niche. Through tooth germ reconstitution and organoid culture in vitro and kidney capsule transplantation in vivo, we provided evidence that the Msx1+ Sdc1- dental follicle cells might function as the tooth organizers that promoted epithelium survival and tooth germ organization. Furthermore, the appearance of Msx1+ Sdc1+ dental papilla cells relied on the interaction between dental epithelium and Msx1+ Sdc1- dental follicle cells. Together, our results revealed the cellular dynamics of tooth development in mice and identified that the dental follicle might be the key driver of epithelial-mesenchymal interaction and tooth morphogenesis.
2022-11-01 | GSE162413 | GEO
Project description:Differential gene expression in Jagged1 treated human dental pulp cells.
| PRJNA375088 | ENA
Project description:Wnt regulates various cell responses. In dental pulp cells, Wnt signaling control cell proliferation, apoptosis, migration and differentiation. Here, the differential gene expression of human dental pulp stem cells treated with Wnt ligands or Wnt agonist was examined using a high throughput RNA sequencing technique. Results demonstrated that Wnt ligands or Wnt agonist altered numerous gene expression in human dental pulp stem cells.
2022-12-09 | GSE183444 | GEO
Project description:Dental pulp cells obtained from several donors proliferated actively in a serum-free medium STK2. The growth rate of dental pulp cells from most donors was higher in the serum-free medium than that in a medium containing 10% serum. DNA microarray analyses showed that gene expression profile of dental pulp cells grown in the serum-free medium was similar to that of cells grown in a medium containing 10% serum. However, several genes related to cell proliferation were up-regulated in dental pulp cells grown in the serum-free medium.
2018-03-14 | GSE97199 | GEO