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:Reconstruction of periodontal tissue damaged by injury or disease is a long-standing clinical goal, yet its practice is hampered by a lack of mechanistic understanding of periodontal regeneration. We investigated the periodontal crestal region (POCR) in the cervical area of the mouse molar, which is exposed to oral bacteria and other substances and provides frontline protection against external insults. The POCR supports the tooth and comprises the periodontal ligament (PDL), alveolar bone, and the dentogingival junction. Using genetic lineage tracing and single-cell profiling, we identified a distinct Gli1+ cell population in the POCR that contains periodontal crestal stem cells (PCSCs), which give rise to osteoblasts, PDL cells, and gingival cells in vivo, and similar Gli1⁺ PCSCs are present in human POCR. The Gli1⁺ PCSCs are required for periodontal tissue maintenance and in a POCR injury model, they expand in response to injury induced niche factors, including chemokine (CXC motif) ligand 12 (Cxcl12) and Sonic/Indian Hedgehog (Shh/Ihh). Upregulated chemokine expression and Hedgehog signaling were also observed in human periodontitis tissues. Furthermore, we show that Gαs, which regulates both Cxcl12 and Shh/Ihh pathways, is essential for periodontal lineage determination and cellular plasticity. Loss of Gαs in Gli1⁺ PCSCs induces ankylosis by promoting their osteogenic differentiation, whereas a Gαs gain of function mutation identified in the human Fibrodysplasia (FD) favors PDL cell fate. These findings identify Gli1⁺ PCSCs as key regulators of periodontal homeostasis and repair, providing new cellular and molecular insights into periodontal regeneration and disease.
2026-09-08 | GSE346113 | GEO
Project description:Transcriptomic analysis of paired gingival fibroblasts and periodontal ligament fibroblasts
| PRJDB42918 | ENA
Project description:In this study, we demonstrated that BMP-2 induced ectopic bone marrow presents microstructure, cellularity and functional hematopoiesis, and is a fully optimized microenvironment capable of sustaining the hematopoietic stem cells and the bone marrow niche-associated CXC-chemokine-ligand-12 (CXCL12)-abundant reticular (CAR) cells, comparably to native bone marrow.
2024-12-13 | GSE283925 | GEO
Project description:Novel Roles of Osteopontin and CXC Chemokine Ligand 7 in the Defense against Mycobacterial Infection
| PRJNA93427 | ENA
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