Effect of tricalcium silicate cements in gene expression of COL1A1, MAPK’s, and NF-kB, and cell adhesion in primary teeth’ pulp fibroblasts

Tricalcium silicate cements (TSCs) regulate gene expression and cell responses from dental tissues surrounding the repair site. The study aimed to evaluate the gene expression levels of Collagen Type I Alpha 1 Chain (COL1A1), Mitogen-Activated Protein Kinases (MAPK’s), Nuclear Factor-Kappa B (NF-κB), cell adhesion, and morphology of human dental pulp fibroblasts (hDPFs) from primary teeth treated with eluates obtained from Mineral Trioxide Aggregate (MTA) and Biodentine. hDPFs were treated with eluates from Biodentine and MTA (2.5 mg/mL in culture medium). The control group was a culture without the eluates. Gene expressions of COL1A1, MAPK’s, and NF-κB were evaluated using Polymerase Chain Reaction (PCR) and cell adhesion by immunocytochemistry for Vinculin and Integrin β1 expression. Gene expression of MAPK’s and NF-κB in hDPFs with the eluates from MTA and Biodentine showed no significant difference versus the control group (p > 0.05), but COL1A1 exhibited a significant difference (p < 0.05). The expression of COL1A1, MAPK’s, and NF-κB was lower in cultures with MTA and Biodentine eluates regarding the control group, with no significant difference between MTA and Biodentine (p > 0.05). After 72 h of incubation, the hDPFs cultured with MTA and Biodentine eluates showed an elongated morphology; after 7 d, a loss or/and reduction of the cytoplasmic processes, and smaller nuclei were observed. Vinculin and Integrin β1 were expressed in hDPFs treated with MTA and Biodentine eluates. MTA and Biodentine did not inhibit or generate a significant difference in the expression levels of COL1A1, MAPK’s, and NF-κB in hDPFs.

Gene expression; Human dental pulp fibroblast; Mineral trioxide aggregate; Biodentine; Cell adhesion

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