Characterization of the signaling pathway involved in the transcriptional regulation of semaphorin 3A in normal human epidermal keratinocytes
Project/Area Number |
16K19739
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Dermatology
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Research Institution | Juntendo University |
Principal Investigator |
KAMATA YAYOI 順天堂大学, 医学(系)研究科(研究院), 助教 (00410035)
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Project Period (FY) |
2016-04-01 – 2018-03-31
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Project Status |
Completed (Fiscal Year 2017)
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Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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Keywords | 発現制御 / セマフォリン3A / 表皮角化細胞 / 神経反発因子 / シグナル伝達 / アレルギー / アトピー性皮膚炎 / かゆみ |
Outline of Final Research Achievements |
In this study, we investigated the signaling pathway involved in the transcriptional regulation of semaphorin 3A (Sema3A) in normal human epidermal keratinocytes (NHEK). The 5’-flanking region of Sema3A gene was cloned and a critical region for Sema3A promoter activity was identified. In this region, transcription factor binding sites including activator protein (AP)-1 were found. Chromatin immunoprecipitation assay revealed AP-1 bound to the proximal promoter. Up-regulation of Sema3A mRNA by calcium was significantly decreased by AP-1 inhibitor (T-5224). Similarly, it was also decreased by protein kinase C (PKC) α inhibitor (Go6976), MEK1/2 inhibitor (PD98059), and JNK inhibitor (SP600125). These results suggest that Sema3A expression in NHEK is mediated by the PKC/MAPK/AP-1 signaling axis in the proximal promoter, and provide a new insight to identify novel antipruritic drug targets.
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Report
(3 results)
Research Products
(21 results)
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[Journal Article] Relationships among plasma granzyme B level, pruritus and dermatitis in patients with atopic dermatitis.2016
Author(s)
Kamata Y, Kimura U, Matsuda H, Tengara S, Kamo A, Umehara Y, Iizumi K, Kawasaki H, Suga Y, Ogawa H, Tominaga M, Takamori K.
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Journal Title
J Dermatol Sci
Volume: 84
Issue: 3
Pages: 266-271
DOI
Related Report
Peer Reviewed
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