| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2010: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Research Abstract |
In this study, we searched for the factors which promoted the regeneration of damaged gastrointestinal epithelium in the murine colitis model. We found that a group of genes involving in the differentiation to mucin-producing cells and the synthesis of mucins was DNA methylated and their expression were significantly decreased in regenerative epithelial cells isolated from the inflamed colon. Decreased expression of some human homologues was also observed in the ulcerative colitis. In addition, the DNA methylation level of the L-1 retrotransposon was dramatically decreased while the DNA methylation of genes involving in the transcription and the differentiation was accelerated in ulcerative colitis. These results suggest the importance of epigenetic gene regulation for the regeneration of the injured epithelium.
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