FGF-2 suppresses cellular senescence of human mesenchymal stem cells by down-regulation of TGF-β2
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概要
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Human mesenchymal stem cells (hMSCs) are able to both self-replicate and differentiate into a variety of cell types. Fibroblast growth factor-2 (FGF-2) stimulates the growth of hMSCs in vitro, but its mechanisms have not been clarified yet. In this study, we investigated whether cellular senescence was involved in the stimulation of hMSCs growth by FGF-2 and the expression levels of transforming growth factor-β1 and -β2 (TGF-βs). Because hMSCs were induced cellular senescence due to long-term culture, FGF-2 decreased the percentage of senescent cells and suppressed G1 cell growth arrest through the suppression of p21(Cip1), p53, and p16(INK4a) mRNA expression levels. Furthermore, the levels of TGF-βs mRNA expression in hMSCs were increased by long-term culture, but FGF-2 suppressed the increase of TGF-β2 mRNA expression due to long-term culture. These results suggest that FGF-2 suppresses the hMSCs cellular senescence dependent on the length of culture through down-regulation of TGF-β2 expression.
- Academic Pressの論文
- 2007-05-21
著者
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TSUCHIYA Toshie
Division of Medical Devices, National Institute of Health Sciences
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Fujiwara-hatano Yoko
Department Of Applied Biological Chemistry Graduate School Of Agricultural And Life Sciences The Uni
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Sawada Rumi
Division Of Medical Devices National Institute Of Health Sciences
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Seyama Y
Department Of Biochemistry Faculty Of Medicine University Of Tokyo:(present)department Of Physiologi
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Fujiwara Yoko
Graduate School Of Humanities And Sciences Ochanomizu Univ.
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Fujiwara Yoko
Graduate School Of Humanities And Sciences Ochanomizu University
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Tsuchiya Toshie
National Inst. Health Sci. Tokyo Jpn
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Fujiwara Yoko
Department Of Food And Nutritional Science Graduate School Of Humanities And Sciences Ochanomizu University
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FUJIWARA Yoko
Division of Molecular Pharmacology, Department of Pharmacology, Jichi Medical University
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FUJIWARA Yoko
Department of Nutrition and Food Science, Ochanomizu University
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