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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
Bioinformatic analysis of RNA dynamics during mammalian oocyte-to-embryo transition
 Horvat, Filip ; Svoboda, Petr (advisor) ; Bruce, Alexander (referee) ; Vioristo, Sanna (referee)
The oocyte-to-embryo transition (OET) is a complex biological process during which a terminally differentiated oocyte undergoes numerous and coordinated changes to emerge as a collection of totipotent cells - initial blastomeres of a preimplantation embryo. In mammals, this process is primarily controlled through post-transcriptional regulation of maternal RNAs and transcriptional induction of zygotic RNAs. Technological advancements of next-generation sequencing methods during the last decade enabled studying OET through bioinformatic studies of high-throughput transcriptomics and genomics datasets. The work presented in this thesis explores mechanisms of post-transcriptional regulation and dynamics of different RNAs during OET by utilizing in-depth computational analyses. The presented work is divided into three topics, all covering distinct regulatory facets of the mammalian OET and illustrating roles of different RNA species. The first topic discusses dynamics of maternal transcriptomes in mouse. In our research, we explored roles of deadenylase CNOT6L in the maternal mRNA turnover in mice. We provided evidence that animals deficient in Cnot6l expression are subfertile, due to disruption in deadenylation and degradation of maternal mRNAs deposited in the oocyte. In another study, we...
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