Induction of cytochrome P450 activities in human dermal fibroblasts by transcriptional regulators and three-dimensional scaffolds for drug metabolism prediction

博士 === 國立臺灣大學 === 生物科技研究所 === 101 === A reliable, reproducible, and convenient in vitro platform for drug metabolism determination and toxicity prediction is of tremendous value but still lacking. In the present study, a collection of 24 hepatic transcription factors and nuclear receptors in differe...

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Main Authors: Tsai-Shin Chiang, 蔣采昕
Other Authors: 李宣書
Format: Others
Language:en_US
Published: 2012
Online Access:http://ndltd.ncl.edu.tw/handle/15464323140855725416
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spelling ndltd-TW-101NTU051110042017-05-14T04:31:37Z http://ndltd.ncl.edu.tw/handle/15464323140855725416 Induction of cytochrome P450 activities in human dermal fibroblasts by transcriptional regulators and three-dimensional scaffolds for drug metabolism prediction 藉由轉錄調控因子與三維支架誘導人類皮膚纖維母細胞表現 cytochrome P450 以建立藥物代謝之預測平台 Tsai-Shin Chiang 蔣采昕 博士 國立臺灣大學 生物科技研究所 101 A reliable, reproducible, and convenient in vitro platform for drug metabolism determination and toxicity prediction is of tremendous value but still lacking. In the present study, a collection of 24 hepatic transcription factors and nuclear receptors in different combinations were surveyed, and 10 among them were finally selected to induce the expression and enzyme activities of cytochrome P450 (CYP) 3A4, 1B1, and 2C9 in human dermal fibroblasts (HDFs). The expression and activities of these CYPs in the induced HDFs were higher than those in commonly used hepatoma cell lines. Even higher CYP expression and activities could be further enhanced by culturing the induced HDFs either as spheroids or into several kinds of scaffolds, particularly the tri-copolymer scaffold composed of gelatin, chondroitin, and hyaluronan. More strikingly, there showed a synergistic effect of seeding and culturing the spheroids into the tri-copolymer scaffold. Scanning electron microscopy and confocal microscopy disclosed well accommodation of these spheroids inside the scaffolds and displayed a high survival rate. Moreover, the spheroid/scaffold constructs could metabolize an anti-hypertension drug nifedipine into oxidized nifedipine, showing their applicability in studying drug metabolism. This study presents a novel strategy to induce the expression and enzyme activities of critical CYPs in HDFs, and may have potential to establish an in vitro platform to study drug metabolism and to predict the possible human risk of drug toxicity. 李宣書 2012 學位論文 ; thesis 114 en_US
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language en_US
format Others
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description 博士 === 國立臺灣大學 === 生物科技研究所 === 101 === A reliable, reproducible, and convenient in vitro platform for drug metabolism determination and toxicity prediction is of tremendous value but still lacking. In the present study, a collection of 24 hepatic transcription factors and nuclear receptors in different combinations were surveyed, and 10 among them were finally selected to induce the expression and enzyme activities of cytochrome P450 (CYP) 3A4, 1B1, and 2C9 in human dermal fibroblasts (HDFs). The expression and activities of these CYPs in the induced HDFs were higher than those in commonly used hepatoma cell lines. Even higher CYP expression and activities could be further enhanced by culturing the induced HDFs either as spheroids or into several kinds of scaffolds, particularly the tri-copolymer scaffold composed of gelatin, chondroitin, and hyaluronan. More strikingly, there showed a synergistic effect of seeding and culturing the spheroids into the tri-copolymer scaffold. Scanning electron microscopy and confocal microscopy disclosed well accommodation of these spheroids inside the scaffolds and displayed a high survival rate. Moreover, the spheroid/scaffold constructs could metabolize an anti-hypertension drug nifedipine into oxidized nifedipine, showing their applicability in studying drug metabolism. This study presents a novel strategy to induce the expression and enzyme activities of critical CYPs in HDFs, and may have potential to establish an in vitro platform to study drug metabolism and to predict the possible human risk of drug toxicity.
author2 李宣書
author_facet 李宣書
Tsai-Shin Chiang
蔣采昕
author Tsai-Shin Chiang
蔣采昕
spellingShingle Tsai-Shin Chiang
蔣采昕
Induction of cytochrome P450 activities in human dermal fibroblasts by transcriptional regulators and three-dimensional scaffolds for drug metabolism prediction
author_sort Tsai-Shin Chiang
title Induction of cytochrome P450 activities in human dermal fibroblasts by transcriptional regulators and three-dimensional scaffolds for drug metabolism prediction
title_short Induction of cytochrome P450 activities in human dermal fibroblasts by transcriptional regulators and three-dimensional scaffolds for drug metabolism prediction
title_full Induction of cytochrome P450 activities in human dermal fibroblasts by transcriptional regulators and three-dimensional scaffolds for drug metabolism prediction
title_fullStr Induction of cytochrome P450 activities in human dermal fibroblasts by transcriptional regulators and three-dimensional scaffolds for drug metabolism prediction
title_full_unstemmed Induction of cytochrome P450 activities in human dermal fibroblasts by transcriptional regulators and three-dimensional scaffolds for drug metabolism prediction
title_sort induction of cytochrome p450 activities in human dermal fibroblasts by transcriptional regulators and three-dimensional scaffolds for drug metabolism prediction
publishDate 2012
url http://ndltd.ncl.edu.tw/handle/15464323140855725416
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