Unknown

Dataset Information

0

TNF-alpha promotes an odontoblastic phenotype in dental pulp cells.


ABSTRACT: Dental pulp cells can differentiate toward an odontoblastic phenotype to produce reparative dentin beneath caries lesions. However, the mechanisms involved in pulp cell differentiation under pro-inflammatory stimuli have not been well-explored. Thus, we hypothesized that the pro-inflammatory cytokine tumor necrosis factor-alpha (TNF-alpha) could be a mediator involved in dental pulp cell differentiation toward an odontoblastic phenotype. We observed that TNF-alpha-challenged pulp cells exhibited increased mineralization and early and increased expression of dentin phosphoprotein (DPP), dentin sialoprotein (DSP), dentin matrix protein-1, and osteocalcin during a phase of reduced matrix metalloproteinase (MMP) expression. We investigated whether these events were related and found that p38, a mitogen-activated protein kinase, differentially regulated MMP-1 and DSP/DPP expression and mediated mineralization upon TNF-alpha treatment. These findings indicate that TNF-alpha stimulates differentiation of dental pulp cells toward an odontoblastic phenotype via p38, while negatively regulating MMP-1 expression.

SUBMITTER: Paula-Silva FW 

PROVIDER: S-EPMC3144054 | biostudies-literature | 2009 Apr

REPOSITORIES: biostudies-literature

altmetric image

Publications

TNF-alpha promotes an odontoblastic phenotype in dental pulp cells.

Paula-Silva F W G FW   Ghosh A A   Silva L A B LA   Kapila Y L YL  

Journal of dental research 20090401 4


Dental pulp cells can differentiate toward an odontoblastic phenotype to produce reparative dentin beneath caries lesions. However, the mechanisms involved in pulp cell differentiation under pro-inflammatory stimuli have not been well-explored. Thus, we hypothesized that the pro-inflammatory cytokine tumor necrosis factor-alpha (TNF-alpha) could be a mediator involved in dental pulp cell differentiation toward an odontoblastic phenotype. We observed that TNF-alpha-challenged pulp cells exhibited  ...[more]

Similar Datasets

| S-EPMC10341716 | biostudies-literature
| S-EPMC8468928 | biostudies-literature
| S-EPMC5029108 | biostudies-literature
| S-EPMC8267829 | biostudies-literature
| S-EPMC9694919 | biostudies-literature
| S-EPMC6869433 | biostudies-literature
| S-EPMC7251819 | biostudies-literature
| S-EPMC10079685 | biostudies-literature
| S-EPMC8429013 | biostudies-literature
| S-EPMC6195797 | biostudies-literature