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Zhang H, Liu J, Tai Y, Zhang X, Zhang J, Liu S, Lv J, Liu Z, Kong Q. Identification and characterization of L1-specific endo-siRNAs essential for early embryonic development in pig. Oncotarget 2017; 8:23167-23176. [PMID: 28423565 PMCID: PMC5410294 DOI: 10.18632/oncotarget.15517] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 02/08/2017] [Indexed: 01/17/2023] Open
Abstract
Small noncoding RNAs (sncRNAs) play important roles in RNA interference (RNAi). In addition to microRNA (miRNA) and Piwi-interacting RNA (piRNA), one key member of sncRNAs group is endogenous small interfering RNA (endo-siRNA). Some studies do show the role of endo-siRNAs in Dicer and/or Ago mutants, however, the biological functions of specific endo-siRNAs remains mostly unanswered. In the study, we have performed a comparative analysis of endo-siRNAs present in porcine sperms, oocytes and zygotes, identified by deep sequencing and bioinformatics analysis. Further, we observe a large amount of endo-siRNAs specific binding on ORF2 and 3′ UTR of porcine L1 (L1-siRNAs). And, 9 L1-siRNAs generated from a dsRNA formed between L1 transcript and a newly identified an antisense noncoding RNA was characterized. We show the L1-siRNAs regulate early embryonic development by inhibiting the activity of L1 retrotransposition. This work can contribute to understanding the functional role of abundant endo-siRNAs in embryonic development.
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Affiliation(s)
- Heng Zhang
- Laboratory of Embryo Biotechnology, College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang Province 150030, China
| | - Jilong Liu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou Province 510642, China
| | - Yurong Tai
- Laboratory of Embryo Biotechnology, College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang Province 150030, China
| | - Xiaolei Zhang
- Laboratory of Embryo Biotechnology, College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang Province 150030, China
| | - Jiaming Zhang
- Laboratory of Embryo Biotechnology, College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang Province 150030, China
| | - Shichao Liu
- Laboratory of Embryo Biotechnology, College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang Province 150030, China
| | - Jiawei Lv
- Laboratory of Embryo Biotechnology, College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang Province 150030, China
| | - Zhonghua Liu
- Laboratory of Embryo Biotechnology, College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang Province 150030, China
| | - Qingran Kong
- Laboratory of Embryo Biotechnology, College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang Province 150030, China
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