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Although parental genomes undergo extensive epigenetic reprogramming to be equalized after fertilization, whether they play different roles in human zygotic genome activation (ZGA) remains unknown. Here, we mapped parental transcriptomes by using human parthenogenetic (PG) and androgenetic (AG) embryos during ZGA. Our data show that human ZGA is launched at the 8-cell stage in AG and bi-parental embryos, but at the morula stage in PG embryos. In contrast, mouse ZGA occurs at the same stage in PG and AG embryos. Mechanistically, primate-specific ZNF675 with AG-specific expression plays a role in human ZGA initiated from paternal genome at the 8-cell stage. AG-specifically expressed LSM1 is also critical for human maternal RNA degradation (MRD) and ZGA. The allelic expressions of ZNF675 and LSM1 are associated with their allelically epigenetic states. Notably, the paternally specific expressions of ZNF675 and LSM1 are also observed in diploid embryos. Collectively, human ZGA is initiated from paternal genome.
Pubmed ID: 36717546 RIS Download
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Software environment and programming language for statistical computing and graphics. R is integrated suite of software facilities for data manipulation, calculation and graphical display. Can be extended via packages. Some packages are supplied with the R distribution and more are available through CRAN family.It compiles and runs on wide variety of UNIX platforms, Windows and MacOS.
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View all literature mentionsCell line HEK293T is a Transformed cell line with a species of origin Homo sapiens (Human)
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