2015 Fiscal Year Final Research Report
The Effect of TRPV1 channel in the pathogenesis of periodontitis.
| Project/Area Number |
26861808
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Periodontology
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| Research Institution | Niigata University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Keywords | 歯肉上皮細胞 / イオンチャネル / TRPV1 / 歯周炎 |
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| Outline of Final Research Achievements |
TRPV1, a member of the calcium-permeable thermosensitive transient receptor potential super family, is a sensor of thermal and chemical stimuli. TRPV1 was recently found to be expressed by non-neuronal cells, such as epithelial cells. The oral gingival epithelium is exposed to multiple noxious stimuli, including heat and acids derived from endogenous and exogenous substances; however, whether gingival epithelial cells (GECs) express TRPV1 is unknown. We show that both TRPV1 mRNA and protein are expressed by GECs. Capsaicin, a TRPV1 agonist, elevated intracellular Ca2+ levels in the gingival epithelial cell line, epi 4. Moreover, TRPV1 activation in epi 4 cells accelerated proliferation. These responses to capsaicin were inhibited by a specific TRPV1 antagonist, SB-366791. We also observed GEC proliferation in capsaicin-treated mice in vivo.Our results suggest that functional TRPV1 is expressed by GECs and contribute to the regulation of cell proliferation.
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| Free Research Field |
歯周病
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