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...
Main Authors: | , |
---|---|
Other Authors: | |
Format: | Others |
Language: | en_US |
Published: |
2012
|
Online Access: | http://ndltd.ncl.edu.tw/handle/15464323140855725416 |
id |
ndltd-TW-101NTU05111004 |
---|---|
record_format |
oai_dc |
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 |
collection |
NDLTD |
language |
en_US |
format |
Others
|
sources |
NDLTD |
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 |
work_keys_str_mv |
AT tsaishinchiang inductionofcytochromep450activitiesinhumandermalfibroblastsbytranscriptionalregulatorsandthreedimensionalscaffoldsfordrugmetabolismprediction AT jiǎngcǎixīn inductionofcytochromep450activitiesinhumandermalfibroblastsbytranscriptionalregulatorsandthreedimensionalscaffoldsfordrugmetabolismprediction AT tsaishinchiang jíyóuzhuǎnlùdiàokòngyīnziyǔsānwéizhījiàyòudǎorénlèipífūxiānwéimǔxìbāobiǎoxiàncytochromep450yǐjiànlìyàowùdàixièzhīyùcèpíngtái AT jiǎngcǎixīn jíyóuzhuǎnlùdiàokòngyīnziyǔsānwéizhījiàyòudǎorénlèipífūxiānwéimǔxìbāobiǎoxiàncytochromep450yǐjiànlìyàowùdàixièzhīyùcèpíngtái |
_version_ |
1718448574024384512 |