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Crucial role of dead end gene for primordial germ cell survival in rice field eel (Monopterus albus)

文献类型: 外文期刊

作者: Hu, Qiaomu 2 ; Xiao, Qing 1 ; Tian, Haifeng 2 ; Li, Dapeng 1 ; Li, Zhong 2 ;

作者机构: 1.Huazhong Agr Univ, Coll Fisheries, Hubei Prov Engn Lab Pond Aquaculture, Wuhan 430070, Peoples R China

2.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Wuhan 430223, Peoples R China

关键词: Monopterus albus; Dead end; Primordial germ cell; Morpholino; Cas9-gRNA

期刊名称:THERIOGENOLOGY ( 影响因子:2.74; 五年影响因子:2.93 )

ISSN: 0093-691X

年卷期: 2021 年 176 卷

页码:

收录情况: SCI

摘要: The dead end gene has been identified as a essential factor for Primordial germ cells (PGCs) migration and survival in many species, but its role in Monopterus albus is unclear. In order to clarify the function of dead end gene in M.albus PGCs migration and survival, we first characterized the expression profile of M.albus dead end (Madnd) in developing embryos and various tissues. qRT-PCR revealed that Madnd transcripts were exclusively detected in gonad, including ovary, testis and ovotestis.Embryos injected with a Madnd morpholino (Madnd-MO) exhibited down-regulation of the vasa gene. Furthermore, the GFP signal show the PGCs migration in control group were injected with GFP-nanos3 3'-UTR mRNA for visualization, as described in a previous study, yet it was disappeared after embryos injected with Madnd-MO.Finally, we characterized the genomics sequence of the Madnd gene and designed five gRNAs for genome editing. Three gRNAs were selected for microinjection according to the results of in vitro tests. gRNAd1 was used for microinjection with the Cas9 protein and was confirmed to be effective. Our analysis in this study suggested that Madnd play a key role in PGCs migration and survival in M. albus. These data provide the basis for the production of fast-growing and reproductively M.albus sterile. (C) 2021 Published by Elsevier Inc.

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