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A novel testis-specific long noncoding RNA, Tesra, activates the Prss42/Tessp-2 gene during mouse spermatogenesis

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Title: A novel testis-specific long noncoding RNA, Tesra, activates the Prss42/Tessp-2 gene during mouse spermatogenesis
Authors: Satoh, Yui Browse this author
Takei, Natsumi Browse this author
Kawamura, Shohei Browse this author
Takahash, Nobuhiko Browse this author
Kotani, Tomoya Browse this author
Kimura, Atsushi P. Browse this author
Keywords: long noncoding RNA
transcriptional regulation
Issue Date: Mar-2019
Publisher: Oxford University Press
Journal Title: Biology of reproduction
Volume: 100
Issue: 3
Start Page: 833
End Page: 848
Publisher DOI: 10.1093/biolre/ioy230
PMID: 30379984
Abstract: The progression of spermatogenesis is precisely controlled by meiotic stage-specific genes, but the molecular mechanism for activation of such genes is still elusive. Here we found a novel testis-specific long noncoding RNA (lncRNA), Tesra, that was specifically expressed in the mouse testis at the Prss/Tessp gene cluster on chromosome 9. Tesra was transcribed downstream of Prss44/Tessp-4, starting within the gene, as a 4435-nucleotide transcript and developmentally activated at a stage similar to that for Prss/Tessp genes. By in situ hybridization, Tesra was found to be localized in and around germ cells and Leydig cells, being consistent with biochemical data showing its existence in cytoplasmic, nuclear, and extracellular fractions. Based on the finding of more signals in nuclei of pachytene spermatocytes, we explored the possibility that Tesra plays a role in transcriptional activation of Prss/Tessp genes. By a ChIRP assay, the Tesra transcript was found to bind to the Prss42/Tessp-2 promoter region in testicular germ cells, and transient overexpression of Tesra significantly activated endogenous Prss42/Tessp-2 expression and increased Prss42/Tessp-2 promoter activity in a reporter construct. These findings suggest that Tesra activates the Prss42/Tessp-2 gene by binding to the promoter. Finally, we investigated whether Tesra co-functioned with enhancers adjacent to another lncRNA, lncRNA-HSVIII. In the Tet-on system, Tesra transcription significantly increased activity of one enhancer, but Tesra and the enhancer were not interdependent. Collectively, our results proposed a potential function of an lncRNA, Tesra, in transcriptional activation and suggest a novel relationship between an lncRNA and an enhancer. A novel long noncoding RNA, Tesra, that is specifically expressed in the mouse testis activates a spermatocyte-specific gene, Prss42/Tessp-2, in cooperation with an enhancer by binding to chromatin at the promoter and enhancing its activity.
Type: article
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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