The Recovery Effect of the Translationally Controlled Tumor Protein in 2-Hydroxy-Ethyl Methacrylate-Treated Human Dental Pulp Cells

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Abstract:

2-Hydroxy-ethyl methacrylate (HEMA) is a major monomer released from resin-base dental restorative materials. This study examined the recovery effect of the Translationally Controlled Tumor Protein (TCTP) in human dental pulp cells (HDPCs) after exposed to HEMA. TCTP from banana prawn (Penaeus merguiensis) was cloned and the protein was purified. A real-time cell analyzer was used to evaluate cell survival. The cell suspensions were seeded into an E-plate 96 at 8,000 cells/ well. After 24 hours, HDPCs were treated with 8 mM HEMA mixed in culture medium (alpha modified Eagles medium, α-MEM) for 1 hour before the medium supplemented with TCTP at 0, 100 ng/ml, 1 μg/ml, 10 μg/ml was replaced and left for 23 hours. After that, cells were fed with fresh medium for 72 hours. The cell indexes were monitored every 15 minutes and the 1-way analysis of variance (ANOVA) was used for statistical analysis. Real-time xCELLigence impedance analysis indicated that the cell indexes reached to 0 after treated with HEMA for 1 hour. TCTP at 1 μg/ml was significantly (P < 0.05) increased the cell index of HEME-treated HDPCs from 0 to 0.02 and 0.04 after TCTP exposure for 1 hour and 23 hours, respectively. It was suggested that TCTP has an ability to recover the cytotoxic effect of HEMA-treated pulp cells.

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153-156

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August 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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