PMID- 31189122 OWN - NLM STAT- MEDLINE DCOM- 20200106 LR - 20200106 IS - 1879-3231 (Electronic) IS - 0093-691X (Linking) VI - 135 DP - 2019 Sep 1 TI - Endo-siRNAs repress expression of SINE1B during in vitro maturation of porcine oocyte. PG - 19-24 LID - S0093-691X(19)30135-9 [pii] LID - 10.1016/j.theriogenology.2019.05.011 [doi] AB - Approximately 40% of mammalian genome is made of transposable elements (TEs), and during specific biological processes, such as gametogenesis, they may be activated by global demethylation, so strict silencing mechanism is indispensable for genomic stability. Here, we performed small RNA-seq on Dicer1 knockdown (KD) oocytes in pig, and observed short interspersed nuclear elements 1B (SINE1B) derived endogenous small interfering RNAs (endo-siRNAs), termed SINE1B-siRNAs, were significantly decreased and their biogenesis was dependent on Dicer1 and transcript of SINE1B. Furthermore, by injection of mimics and inhibitors of the SINE1B-siRNAs into germinal vesicle-stage (GV-stage) oocytes, we found the maturation rate was significantly decreased by SINE1B-siRNAs, indicating the SINE1B-siRNAs are indispensible for in vitro maturation (IVM) of porcine oocyte. To figure out the mechanism, we checked the expression pattern and DNA methylation status of SINE1B during IVM of porcine oocytes, and demonstrated the SINE1B-siRNAs could repress SINE1B expression induced by hypomethylation at a post-transcriptional level. Our results suggest that during gametogenesis when the erasure of DNA methylation occurs, endo-siRNAs act as a chronic response to limit retrotransposon activation. CI - Copyright (c) 2019 Elsevier Inc. All rights reserved. FAU - Kong, Qing-Ran AU - Kong QR AD - Key Laboratory of Animal Cellular and Genetics Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, 150030, Heilongjiang, PR China. Electronic address: kqr086@neau.edu.cn. FAU - Zhang, Jia-Ming AU - Zhang JM AD - Key Laboratory of Animal Cellular and Genetics Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, 150030, Heilongjiang, PR China. FAU - Zhang, Xiao-Lei AU - Zhang XL AD - Key Laboratory of Animal Cellular and Genetics Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, 150030, Heilongjiang, PR China. FAU - Zong, Ming AU - Zong M AD - Key Laboratory of Animal Cellular and Genetics Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, 150030, Heilongjiang, PR China. FAU - Zheng, Kai-Lun AU - Zheng KL AD - Key Laboratory of Animal Cellular and Genetics Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, 150030, Heilongjiang, PR China. FAU - Liu, Lei AU - Liu L AD - Key Laboratory of Animal Cellular and Genetics Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, 150030, Heilongjiang, PR China. FAU - Meng, Fan-Xi AU - Meng FX AD - Key Laboratory of Animal Cellular and Genetics Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, 150030, Heilongjiang, PR China. FAU - Zhang, Ting-Ting AU - Zhang TT AD - Key Laboratory of Animal Cellular and Genetics Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, 150030, Heilongjiang, PR China. FAU - Weng, Xiao-Gang AU - Weng XG AD - Key Laboratory of Animal Cellular and Genetics Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, 150030, Heilongjiang, PR China. FAU - Mu, Yan-Shuang AU - Mu YS AD - Key Laboratory of Animal Cellular and Genetics Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, 150030, Heilongjiang, PR China. Electronic address: muyanshuang@163.com. FAU - Liu, Zhong-Hua AU - Liu ZH AD - Key Laboratory of Animal Cellular and Genetics Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, 150030, Heilongjiang, PR China. Electronic address: liuzhonghua@neau.edu.cn. LA - eng PT - Journal Article DEP - 20190522 PL - United States TA - Theriogenology JT - Theriogenology JID - 0421510 RN - 0 (RNA, Small Interfering) RN - 0 (Retroelements) RN - EC 3.6.4.13 (DEAD-box RNA Helicases) SB - IM MH - Animals MH - DEAD-box RNA Helicases/genetics/metabolism MH - DNA Methylation MH - Gene Expression Regulation MH - Gene Knockdown Techniques MH - In Vitro Oocyte Maturation Techniques/*veterinary MH - Oocytes/*physiology MH - RNA, Small Interfering MH - Retroelements MH - Short Interspersed Nucleotide Elements/genetics/*physiology MH - Swine OTO - NOTNLM OT - IVM OT - Oocyte OT - Pig OT - SINE1B OT - endo-siRNAs EDAT- 2019/06/13 06:00 MHDA- 2020/01/07 06:00 CRDT- 2019/06/13 06:00 PHST- 2018/12/07 00:00 [received] PHST- 2019/04/20 00:00 [revised] PHST- 2019/05/13 00:00 [accepted] PHST- 2019/06/13 06:00 [pubmed] PHST- 2020/01/07 06:00 [medline] PHST- 2019/06/13 06:00 [entrez] AID - S0093-691X(19)30135-9 [pii] AID - 10.1016/j.theriogenology.2019.05.011 [doi] PST - ppublish SO - Theriogenology. 2019 Sep 1;135:19-24. doi: 10.1016/j.theriogenology.2019.05.011. Epub 2019 May 22.