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Influence of the two different cryopreservation methods to inflammation of dental pulp cells

ABSTRACT: Dental pulp cells of cryopreserved teeth (slow and rapid speed) were examined with microarray for screening which gene is involve in the inflammation process during the cryopreservation process.

ORGANISM(S): Homo sapiens

PROVIDER: GSE45502 | GEO | 2013/03/27

SECONDARY ACCESSION(S): PRJNA194530

REPOSITORIES: GEO

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Influence of the two different cryopreservation methods to inflammation of dental pulp cells

Project description:Dental pulp cells of cryopreserved teeth (slow and rapid speed) were examined with microarray for screening which gene is involve in the inflammation process during the cryopreservation process. Intact caries-free, freshly extracted premolars (n=6) were collected from 3 patients for microarray assay analysis. They were classified as control and cryopreserved groups. Cryopreserved groups were divided into rapid freezing and slow freezing group.

2013-03-27 | E-GEOD-45502 | biostudies-arrayexpress

Comparative gene expression analysis of the human dental pulp in deciduous and permanent teeth

Project description:Human deciduous and permanent teeth exhibit different developmental processes, morphologies, histological characteristics and life cycles. In addition their pulp tissues react differently to external stimuli, such as the pulp sensitivity test, dental trauma and pulp therapy materials. These differences are attributable to their genetic backgrounds. Therefore the purpose of this study is to compare the differences of dental pulp in deciduous and permanent teeth. Pulp samples were obtained from permanent premolars (n=6, aged 11-14 years) and deciduous teeth (n=6, aged 11-14 years). Comparative cDNA microarrary analysis revealed several differences in gene expression between the deciduous and permanent pulp tissues. Each GSM record represents a pulp sample pooled from two teeth samples.

2014-08-21 | E-GEOD-51449 | biostudies-arrayexpress

Comparative gene expression analysis of the human dental pulp in deciduous and permanent teeth

2014-08-21 | GSE51449 | GEO

RNA-Seq analysis of neurons derived from induced pluripotent stem cells reprogrammed from dental pulp

Project description:In this study, we investigated its suitability for disease modeling by carrying out gene expression profiling, using RNA-seq, on neurons derived from iPSCs made from dental pulp extracted from deciduous teeth (T-iPSCs) and fibroblasts (F-iPSCs). Comparison of expression profiles of iPSC derived from dental pulp and skin-fibroblast

2013-05-01 | E-GEOD-43143 | biostudies-arrayexpress

Comparative gene expression analysis of the human periodontal ligament and dental pulp in the human permanent teeth

Project description:The periodontal ligament(PDL) and dental pulp tissues of human permanent teeth have a number of differences in their developmental processes, histological characteristics and functions. It can be figured out that these differences are attributable to genetic backgrounds of their cells organized tissues. The purpose of this study was to identify the gene-expression profiles and their molecular biological differences of periodontal ligament and dental pulp tissues from the human permanent teeth.

2016-11-22 | GSE50639 | 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

Role of MSX1 in Osteogenic Differentiation of Dental Pulp Cells

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

RNA-Seq analysis of neurons derived from induced pluripotent stem cells reprogrammed from dental pulp

2014-01-01 | GSE43143 | GEO

Human Dental Pulp Cells Mature vs. Immature stages

Project description:We report screening of genes differentially expressed in cells isolated from immature and mature third molar teeth. Among them, a homeobox transcription factor, distal-less homeobox 4 (DLX4) was highly expressed in immature human dental pulp cells, and significantly enhanced iPSC colony formation in combination with OCT3/4, SOX2, and KLF4 to the level comparable with that using classical combination of Yamanaka's factors, OCT3/4, SOX2, KLF4, and c-MYC.

2014-12-25 | GSE52853 | GEO

Rejuvenation of Human Stem Cells from Aged Dental Pulp by High Concentration of Serum Culture ex vivo

Project description:Adult stem cells maintain tissue integrity by continuous cellular turnover or serving progenitor cells. Human dental pulp stem cells (hDPSCs) are adult stem cells that can readily be isolated from extracted teeth, then expanded or stored for tissue repair and regeneration. However, stem cells undergo an aging process characterized by a decline in functional abilities, leading eventually to reduced organ function and delays in tissue repair. Like other stem cells, hDPSCs age and go through cellular senescence but little information is available on the mechanisms of aging or the details of the aged hDPSC phenotype. In this study, we investigated the aging phenotypes of human dental pulp and hDPSCs and attempted to rejuvenate them. In this study, hDPSCs were isolated from 23 third molars and primary cultured. Then, Flow cytometey, growth curve, dubling time, colony-forming-unit assay, cell viability after cryopreservation and in serum-free media culture, differntiation capacity for odonto-, adipo- and chondrogenesis, and RNA sequencing were analyzed. As results, the aged tooth maintained its weight of dental pulp however, the frequency of CD90+CD73+ mesenchymal stem cells inside pulp significantly decreased with donor aging. Moreover, each aged hDPSCs showed lower proliferative abilities, poorer survival rates, decreased tri-differentiation potential, and decline in metabolic activities than young hDPSCs. We also found those aged phenotypes could be recovered by cultivating aged hDPSCs in high concentration of fetal bovine serum (FBS) ex vivo and furthermore, the declined metabolic activities were restored by the culture. Here, we suggest a novel method of intervention for rejuvenating hDPSCs and these results have applications in both regenerative medicine and stem cell biology.

2021-01-28 | GSE165627 | GEO

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