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题名: Transcriptional Activity and DNA Methylation Dynamics of the Gal4/UAS System in Zebrafish
作者: Pang, Shao-Chen1; Wang, Hou-Peng1; Zhu, Zuo-Yan1; Sun, Yong-Hua1
关键词: Gal4/UAS ; Transcriptional activity ; Transcriptional silencing ; DNA methylation ; Zebrafish
刊名: MARINE BIOTECHNOLOGY
发表日期: 2015-10-01
DOI: 10.1007/s10126-015-9641-0
卷: 17, 期:5, 页:593-603
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Biotechnology & Applied Microbiology ; Marine & Freshwater Biology
研究领域[WOS]: Biotechnology & Applied Microbiology ; Marine & Freshwater Biology
英文摘要: The Gal4/upstream activating sequence (UAS) system is a powerful genetic tool for the temporal and spatial expression of target genes. In this study, the dynamic activity of the Gal4/UAS system was monitored in zebrafish throughout the entire lifespan and during germline transmission, using an optimized Gal4/UAS, KalTA4/4xUAS, which is driven by two muscle-specific regulatory sequences. We found that UAS-linked gene expression was transcriptionally amplified by Gal4/UAS during early developmental stages and that the amplification effects tended to weaken during later stages and even disappear in subsequent generations. In the F2 generation, the transcription of a UAS-linked enhanced green fluorescent protein (EGFP) reporter was transcriptionally silent from 16 days post-fertilization (dpf) into adulthood, yet offspring of this generation showed reactivation of the EGFP reporter in some strains. We further show that the transcriptional silencing and reactivation of UAS-driven EGFP correlated with the DNA methylation levels of the UAS regulatory sequences. Notably, asymmetric DNA methylation of the 4xUAS occurred in oocytes and sperm. Moreover, the paternal and maternal 4xUAS sequences underwent different DNA methylation dynamics after fertilization. Our study suggests that the Gal4/UAS system may represent a powerful tool for tracing the DNA methylation dynamics of paternal and maternal loci during zebrafish development and that UAS-specific DNA methylation should be seriously considered when the Gal4/UAS system is applied in zebrafish.
关键词[WOS]: PRIMORDIAL GERM-CELLS ; GENE-EXPRESSION ; SKELETAL-MUSCLE ; EMBRYO ; GENOME ; PCR
语种: 英语
WOS记录号: WOS:000359948100005
ISSN号: 1436-2228
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/27146
Appears in Collections:鱼类生物学及渔业生物技术研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
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