Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

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

Zhiyuan Sui
ORCID logo ,
Yongjie Zhang
,
Zhishuai Zhang
,
Chenguang Wang
,
Xiaojun Li
,
Feng Xing
* ,
Mingxing Chu
*
Version 1 : Received: 11 April 2023 / Approved: 12 April 2023 / Online: 12 April 2023 (02:48:11 CEST)

A peer-reviewed article of this Preprint also exists.

Sui, Z.; Zhang, Y.; Zhang, Z.; Wang, C.; Li, X.; Xing, F.; Chu, M. Analysis of Lin28B Promoter Activity and Screening of Related Transcription Factors in Dolang Sheep. Genes 2023, 14, 1049. Sui, Z.; Zhang, Y.; Zhang, Z.; Wang, C.; Li, X.; Xing, F.; Chu, M. Analysis of Lin28B Promoter Activity and Screening of Related Transcription Factors in Dolang Sheep. Genes 2023, 14, 1049.

Abstract

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 bioinformatics analysis. Next, a series of deletion vectors were constructed based on the bioinformatics 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 an important role in regulating Lin28B. These results provide a theoretical basis for further research on the transcriptional regulation of sheep Lin28B during puberty initiation.

Keywords

Dolang sheep; Lin28B; promoter; transcription factor

Subject

Biology and Life Sciences, Animal Science, Veterinary Science and Zoology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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