Analysis of Lin28B Promoter Activity and Screening of Related Transcription Factors in Dolang Sheep

文献类型： 外文期刊

第一作者： Sui, Zhiyuan

作者： Sui, Zhiyuan;Zhang, Yongjie;Zhang, Zhishuai;Wang, Chenguang;Li, Xiaojun;Xing, Feng;Sui, Zhiyuan;Zhang, Yongjie;Zhang, Zhishuai;Wang, Chenguang;Li, Xiaojun;Xing, Feng;Chu, Mingxing

作者机构：

关键词： Dolang sheep; Lin28B; promoter; transcription factor

期刊名称：GENES （ 影响因子：3.5； 五年影响因子：3.9 ）

ISSN：

年卷期： 2023 年 14 卷 5 期

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收录情况： SCI

摘要： The Lin28B gene is involved in the initiation of puberty, but its regulatory mechanisms remain unclear. Therefore, in this study, we aimed to study the regulatory mechanism of the Lin28B promoter by cloning the Lin28B proximal promoter for bioinformatic analysis. Next, a series of deletion vectors were constructed based on the bioinformatic analysis results for dual-fluorescein activity detection. The transcriptional regulation mechanism of the Lin28B promoter region was analyzed by detecting mutations in transcription factor-binding sites and overexpression of transcription factors. The dual-luciferase assay showed that the Lin28B promoter region -837 to -338 bp had the highest transcriptional activity, and the transcriptional activity of the Lin28B transcriptional regulatory region decreased significantly after Egr1 and SP1 mutations. Overexpression of the Egr1 transcription factor significantly enhanced the transcription of Lin28B, and the results indicated that Egr1 and SP1 play important roles in regulating Lin28B. These results provide a theoretical basis for further research on the transcriptional regulation of sheep Lin28B during puberty initiation.

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