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Oishi K Miyazaki K Ishida N 《Biochemical and biophysical research communications》2002,298(2):198-202
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Asher G Gatfield D Stratmann M Reinke H Dibner C Kreppel F Mostoslavsky R Alt FW Schibler U 《Cell》2008,134(2):317-328
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Sato F Sato H Jin D Bhawal UK Wu Y Noshiro M Kawamoto T Fujimoto K Seino H Morohashi S Kato Y Kijima H 《Biochemical and biophysical research communications》2012,419(2):441-446
Smads are intracellular signaling mediators. Complexes of Smad2 and Smad3 with Smad4 transmit transforming growth factor-beta (TGF-β) receptor-induced signaling. Snail plays important roles in mesoderm formation, gastrulation, neural crest development, and epithelial mesenchymal transition. However, it remains unknown whether Smad3 and Snail expression is circadian rhythm-dependent. Here, we showed for the first time that Smad3 and Snail show circadian expression in human gingival fibroblasts (HGF-1) and human mesenchymal stem cells (MSC) after serum shock. They also showed circadian expression in the mouse liver. We confirmed that BMAL1/2, DEC1/2, VEGF, and PER1/2/3 also show circadian expression in both HGF-1 and MSC. The mRNA peaks and phases in circadian expression of these genes differed between HGF-1 and MSC. In a luciferase assay, Smad3 promoter activity was upregulated by CLOCK/BMAL1. These findings suggest that Smad3 and Snail have circadian rhythm in vitro and vivo, and that circadian expression of Smad3 depends on CLOCK/BMAL1. 相似文献