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Expression of Six Proteins Causes Reprogramming of Porcine Fibroblasts Into Induced Pluripotent Stem Cells With Both Active X Chromosomes
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Tomokazu Fukuda Tetsuya Tani Seiki Haraguchi Kenichiro Donai Nobuyoshi Nakajima Hirohide Uenishi Takahiro Eitsuka Makoto Miyagawa Sanghoun Song Manabu Onuma Yumi Hoshino Eimei Sato Arata Honda 《Journal of cellular biochemistry》2017,118(3):537-553
In this study, we created porcine‐induced pluripotent stem (iPS) cells with the expression of six reprogramming factors (Oct3/4, Klf4, Sox2, c‐Myc, Lin28, and Nanog). The resulting cells showed growth dependent on LIF (leukemia inhibitory factor) and expression of multiple stem cell markers. Furthermore, the iPS cells caused teratoma formation with three layers of differentiation and had both active X chromosomes (XaXa). Our iPS cells satisfied the both of important characteristics of stem cells: teratoma formation and activation of both X chromosomes. Injection of these iPS cells into morula stage embryos showed that these cells participate in the early stage of porcine embryogenesis. Furthermore, the RNA‐Seq analysis detected that expression levels of endogenous pluripotent related genes, NANOG, SOX2, ZFP42, OCT3/4, ESRRB, and ERAS were much higher in iPS with six factors than that with four reprogramming factors. We can conclude that the expression of six reprogramming factors enables the creation of porcine iPS cells, which is partially close to naive iPS state. J. Cell. Biochem. 118: 537–553, 2017. © 2016 Wiley Periodicals, Inc. 相似文献
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Seki N Toh U Kawaguchi K Ninomiya M Koketsu M Watanabe K Aoki M Fujii T Nakamura A Akagi Y Kusukawa J Kage M Shirouzu K Yamana H 《Journal of cellular biochemistry》2012,113(7):2346-2355
4',5,7-Trihydroxy-3',5'-dimethoxyflavone (Tricin), a naturally occurring flavone, has anti-inflammatory potential and exhibits diverse biological activities including antigrowth activity in several human cancer cell lines and cancer chemopreventive effects in the gastrointestinal tract of mice. The present study aimed to investigate the biological actions of tricin on hepatic stellate cells (HSCs) in vitro, exploring its potential as a treatment of liver fibrosis, since HSC proliferation is closely related to the progression of hepatic fibrogenesis in chronic liver diseases leading to irreversible liver cirrhosis and hepatocellular carcinoma. Tricin inhibited platelet-derived growth factor (PDGF)-BB-induced cell proliferation by blocking cell cycle progression and cell migration in the human HSC line LI90 and culture-activated HSCs. It also reduced the phosphorylation of PDGF receptor β and the downstream signaling molecules ERK1/2 and Akt, which might be due to its tyrosine kinase inhibitor properties rather than inhibition of the direct binding between PDGF-BB and its receptor. Our findings suggest that tricin might be beneficial in HSC-targeting therapeutic or chemopreventive applications for hepatic fibrosis. 相似文献
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