Homo sapiens
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ABSTRACT:
PROVIDER: PRJNA227089 | ENA |
REPOSITORIES: ENA
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Project description:The periodontal ligament (PDL) is one of the connective tissues located between the tooth and bone. It is characterized by rapid turnover. Periodontal ligament fibroblasts (PDLFs) play major roles in the rapid turnover of the PDL. Microarray analysis of human PDLFs (HPDLFs) and human dermal fibroblasts (HDFs) revealed markedly high expression of chemokine (CXC motif) ligand 12 (CXCL12) in the HPDLFs, which plays an important role in the migration of mesenchymal stem cells (MSCs). The function of CXCL12 in the periodontal ligament was investigated in HPDLFs. CXCL12 in HPDLFs and HDFs was examined by microarray, RT-PCR, qRT-PCR and ELISA. It was also immunohistochemically examined in the PDL in vivo. Chemotactic ability of CXCL12 was evaluated both in PDLFs and HDFs with migration assay of MSCs. The expression of CXCL12 in the HPDLFs was much higher than that in HDFs in vitro. CXCL12 was localized in fibroblasts and extracellular matrix in the PDL in rats. Migration assay demonstrated that the number of migrated MSCs by HPDLFs was significantly higher than that by HDFs. In addition, the migrated MSCs also expressed CXCL12 and several genes that are familiar to fibroblasts. The results suggested that PDLFs are able to synthesize and secrete CXCL12 protein, and that CXCL12 induces migration of MSCs in the PDL in order to maintain rapid turnover of the PDL. The objective of this study was to investigate the function of CXCL12 in the PDL with rapid turnover.Microarray analysis was performed using a Whole Human Genome 8x60K (Agilent Technologies, Tokyo, Japan) containing approximately 44,000 transcripts. According to the manufacturerM-bM-^@M-^Ys protocol, total RNAs from HPDLFs and HDFs were labeled with Cy3 and hybridized on the microarray. The hybridization data for HPDLFs were compared with data for HDFs.
2013-11-07 | E-GEOD-52162 | biostudies-arrayexpress
Project description:The periodontal ligament (PDL) is one of the connective tissues located between the tooth and bone. It is characterized by rapid turnover. Periodontal ligament fibroblasts (PDLFs) play major roles in the rapid turnover of the PDL. Microarray analysis of human PDLFs (HPDLFs) and human dermal fibroblasts (HDFs) revealed markedly high expression of chemokine (CXC motif) ligand 12 (CXCL12) in the HPDLFs, which plays an important role in the migration of mesenchymal stem cells (MSCs). The function of CXCL12 in the periodontal ligament was investigated in HPDLFs. CXCL12 in HPDLFs and HDFs was examined by microarray, RT-PCR, qRT-PCR and ELISA. It was also immunohistochemically examined in the PDL in vivo. Chemotactic ability of CXCL12 was evaluated both in PDLFs and HDFs with migration assay of MSCs. The expression of CXCL12 in the HPDLFs was much higher than that in HDFs in vitro. CXCL12 was localized in fibroblasts and extracellular matrix in the PDL in rats. Migration assay demonstrated that the number of migrated MSCs by HPDLFs was significantly higher than that by HDFs. In addition, the migrated MSCs also expressed CXCL12 and several genes that are familiar to fibroblasts. The results suggested that PDLFs are able to synthesize and secrete CXCL12 protein, and that CXCL12 induces migration of MSCs in the PDL in order to maintain rapid turnover of the PDL.
2013-11-07 | GSE52162 | GEO
Project description:This study investigated which genes regarding root resorption are upregulated by cryopreservation and whether cryopreservation affects the expression of Macrophage M-bM-^@M-^Scolony stimulating factor. We manufactured the customized template which was made of genes selected regarding root resorption including osteoprotegerin (OPG), receptor activator of nuclear factor-kappa B ligand (RANKL), RANKLM-bM-^@M-^Ys cognate receptor (RANK), macrophage colony-stimulating factor (M-CSF), interleukin-1M-NM-2 (IL-1M-NM-2), and tumor necrosis factor-alpha (TNF-M-NM-1), and bone morphogenetic proteins (BMP) and analyzed gene expression. cultured human periodontal ligament cells (control) VS cryopreserved and cultured periodontal ligament cells(cryopreserved group): 3 control replicates, 3 cryopreserved replicates
2013-01-19 | E-GEOD-43611 | biostudies-arrayexpress
Project description:Periodontal tissue supports teeth in the alveolar bone socket via fibrous attachment of the periodontal ligament (PDL). The PDL contains many stromal cell types, including osteoblasts, cementoblasts, periodontal fibroblasts, and stem/progenitor cells. However, the characteristics and lineage hierarchy of each cell type remain poorly defined. Here we present a single-cell atlas of PDL, highlighting diverse cell populations in PDL.
2022-09-28 | GSE197828 | GEO
Project description:Periodontitis can impair the osteogenic differentiation of human periodontal mesenchymal stem cells, but the underlying molecular mechanisms are still poorly understood. Long noncoding RNAs (lncRNAs) have been demonstrated to play significant roles under both physiologic and pathological conditions. We performed comprehensive lncRNAs profiling by lncRNA microarray to identify differentially expressed long noncoding RNA expression between Periodontal ligament stem cells from healthy Periodontal tissue and periodontal ligament stem cells from inflammatory periodontal tissue. Our analysis identified 233 lncRNAs and 423 mRNAs that were differently expressed (fold change >2.0, p-value < 0.05) between the two groups of cells. The GO analysis revealed that the significantly down-regulated biological processes included multicellular organismal process, developmental process and multicellular organismal development and the significantly up-regulated biological processes included cellular process, biological regulation and response to stimulus in periodontal ligament stem cells from inflammatory periodontal tissue. The Pathway analysis revealed that the differentially expressed mRNAs may involved in Focal adhesion, ECM-receptor interaction, Bacterial invasion of epithelial cells, Long-term depression, Circadian entrainment and HIF-1 signaling pathway. Two-condition experiment, periodontal ligament stem cells from healthy periodontal tissue (hPDLSCs) vs. periodontal ligament stem cells from inflammatory periodontal tissue (pPDLSCs), Biological replicates: 3 control replicates (hPDLSCs), 3 testing replicates (pPDLSCs).
2016-02-19 | E-GEOD-78074 | biostudies-arrayexpress
Project description:We used microarrays to detect the differences in gene-expression of the periontal ligament between patients with healthy periodontal ligament and patients with periodontitis RNA was extracted directly from the middle third of the human periodontal ligament
2011-03-17 | E-GEOD-27993 | biostudies-arrayexpress
Project description:Novel Roles of Osteopontin and CXC Chemokine Ligand 7 in the Defense against Mycobacterial Infection
| PRJNA93427 | ENA
Project description:The periodontal ligament (PDL), which connects the teeth to the alveolar bone, is essential for periodontal tissue homeostasis. Although the significance of the PDL is recognized, molecular mechanisms underlying PDL function are not well-known. We report that Mohawk homeobox (Mkx), a tendon-specific transcription factor, regulates PDL homeostasis by preventing its degeneration. Mkx is expressed in the mouse PDL at the age of 10 weeks and 12 months. In Mkx-/- mice, age-dependent expansion of the PDL at the maxillary 1st molar (M1) furcation area was observed. Transmission electron microscopy (TEM) revealed that Mkx-/- mice presented collagen fibril degeneration in PDL with age, while the collagen fibril diameter gradually increased in Mkx+/+ mice. PDL cells lost their shape in Mkx-/- mice, suggesting changes in PDL properties. Microarray and quantitative polymerase chain reaction (qPCR) analyses of Mkx-/- PDL revealed an increase in osteogenic gene expression and no change in PDL- and inflammatory-related gene expression. Additionally, COL1A1 and COL1A2 were upregulated in Mkx-overexpressing human PDL fibroblasts, whereas osteogenic genes were downregulated. Our results indicate that Mkx prevents PDL degeneration by regulating osteogenesis. Mohawk transcription factor is essential for homeostasis of the periodontal ligament by regulating osteogenic changes with age.
2017-01-17 | GSE92331 | GEO
Project description:In this study, the effect of a storage medium (hK-HTCM) in which hair keratin was dissolved in a 1:1 mixed solution of Histidine-Tryptophan-Ketoglutarate and Culture media solution (HTCM) was evaluated on the viability and proliferation of human periodontal ligament cells. There was no difference in cytotoxicity between 0.1% and 0.25% hK-HTCM against 0% hK-HTCM and human periodontal ligament cells. Human periodontal ligament cells were cultured in 0.1% and 0.25% hK-HTCM for 48 hours, and after removing hair keratin from the culture medium, the cells resumed proliferation. When exposed to 0.25% hK-HTCM, human periodontal ligament cells showed differential expression of genes related to cell cycle and cell division regulation. On the other hand, differential expression of genes related to phosphorylation and ubiquitination related to cell cycle resumption was observed in human periodontal ligament cells after removal of 0.25% hK-HTCM. 0.25% hK-HTCM showed the ability to regulate the cell cycle of human periodontal ligament cells without showing cytotoxicity, and its potential to be used as a long-term storage medium for avulsed teeth was confirmed.
2024-06-15 | GSE269474 | GEO
Project description:Human dental follicle cells (hDFCs) are precursor cells of periodontal development. Long non-coding RNAs (lncRNAs) have been revealed to be crucial factors that regulate a variety of biological processes; however, whether lncRNAs serve a role in human periodontal development remains unknown. Therefore, the present study used microarrays to detect the differentially expressed lncRNAs and mRNAs between hDFCs and human periodontal ligament cells (hPDLCs). Human dental follicle and periodontal ligament samples were obtained from four adolescents (2 males and 2 females) between 12 and 16 years old following premolar and immature impacted third molar (roots developed to <2/3 their full size) extraction for orthodontic reasons. To verify the reliability of the microarray data, six differentially expressed lncRNAs and six differentially expressed mRNAs were randomly selected for analysis of their expression levels by RT-qPCR.
2019-08-06 | GSE124352 | GEO