MicroRNA-133b stimulates ovarian estradiol synthesis by targeting Foxl2

被引：129
作者：
Dai, Anyi [1 ]
Sun, Haixiang [1 ]
Fang, Ting [1 ]
Zhang, Qun [1 ]
Wu, Shaogen [1 ]
Jiang, Yue [1 ]
Ding, Lijun [1 ]
Yan, Guijun [1 ]
Hu, Yali [1 ]
机构：
[1] Nanjing Univ, Sch Med, Reprod Med Ctr, Affiliated Drum Tower Hosp, Nanjing 210008, Jiangsu, Peoples R China
来源：
FEBS LETTERS | 2013年 / 587卷 / 15期
基金：
中国国家自然科学基金;
关键词：
Granulosa cell; miR-133b; Foxl2; StAR; CYP19A1; Estrogen; TRANSCRIPTION FACTOR FOXL2; GRANULOSA-CELL DIFFERENTIATION; FORKHEAD L2; HORMONE RECEPTOR; GENES; EXPRESSION; ESTROGEN; FAILURE; PROLIFERATION; BIOSYNTHESIS;
D O I：
10.1016/j.febslet.2013.06.023
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Forkhead L2 (Foxl2) is expressed in ovarian granulosa cells and participates in steroidogenesis by transcriptionally regulating target genes such as steroidogenic acute regulatory protein (StAR) and CYP19A1. In this study, a direct link between microRNA-133b (miR-133b) and Foxl2-mediated estradiol release in granulosa cells was established. miR-133b was involved in follicle-stimulating hormone (FSH)-induced estrogen production. Luciferase assays confirmed that miR-133b was bound to the 3' untranslated region (3'UTR) of Foxl2 mRNA. Consistent with this finding, miR-133b overexpression reduced the Foxl2 levels. Furthermore, miR-133b inhibited Foxl2 binding to the StAR and CYP19A1 promoter sequences. These results demonstrate that miR-133b down-regulates Foxl2 expression in granulosa cells by directly targeting the 3'UTR, thus inhibiting the Foxl2-mediated transcriptional repression of StAR and CYP19A1 to promote estradiol production. Crown Copyright (C) 2013 Published by Elsevier B.V. on behalf of Federation of European Biochemical society. All rights reserved.
引用
收藏
页码：2474 / 2482
页数：9
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