Expression and Function of PPARs in Placenta.

Expression and Function of PPARs in Placenta.
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DOI:
10.1155/2013/256508
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发表时间:
2013
期刊:
影响因子:
2.9
通讯作者:
Kitagishi Y
Kitagishi Y
中科院分区:
医学3区
文献类型:
--
作者:
Matsuda S;Kobayashi M;Kitagishi Y

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过氧化物酶体增殖物激活受体(PPAR)是核激素受体超家族中的一员,参与胚胎发育和包括胎盘在内的多种组织的分化,通过改变基因表达而对多不饱和脂肪酸等特定配体做出反应。已经发现了这种受体的三种亚型,每一种亚型都进化成不同的生物学功能。PPAR还控制着与脂质稳态有关的各种靶基因。与其他核受体类似,PPAR的转录活性不仅受到配体刺激的影响,还受到与其他分子的串扰的影响。例如,PPAR和RXRs都是配体激活的转录因子,协调调节基因的表达。此外,PPAR负性调控基因表达的几种机制也已被揭示。有人认为,PPAR是负责将营养刺激转化为胎盘发育基因表达途径变化的关键信使。
Peroxisome proliferator-activated receptors (PPAR) are members of the superfamily of nuclear hormone receptors involved in embryonic development and differentiation of several tissues including placenta, which respond to specific ligands such as polyunsaturated fatty acids by altering gene expression. Three subtypes of this receptor have been discovered, each evolving to achieve different biological functions. The PPARs also control a variety of target genes involved in lipid homeostasis. Similar to other nuclear receptors, the transcriptional activity of PPARs is affected not only by ligand-stimulation but also by crosstalk with other molecules. For example, both PPARs and the RXRs are ligand-activated transcription factors that coordinately regulate gene expression. In addition, several mechanisms underlying negative regulation of gene expression by PPARs have been shown. It is suggested that PPARs are key messengers responsible for the translation of nutritional stimuli into changes in gene expression pathways for placental development.
DOI: 10.1095/biolreprod.110.086983
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