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National Repository of Grey Literature 1 records found  Search took 0.01 seconds. 
Role of Rnf207b in zebrafish hematopoiesis
 Vondráková, Zuzana ; Bartůněk, Petr (advisor) ; Živný, Jan (referee)
Hematopoiesis is the process of proliferation, differentiation and self-renewal of hematopoietic stem cells. Regulation of hematopoiesis is a complex process, which takes place on many different levels and is directed by many signals. RNF207 is one of the perspective genes chosen based on a screen in chicken model, where obtained data show its role in hematopoiesis. The aim of this work was to confirm the role of rnf207b as a new regulator of hematopoiesis in Danio rerio and to find out on which level of hematopoiesis is active. Danio rerio is an excellent model to study the function of genes in vivo, thanks to the easy manipulation of genetic expression and wide range of phenotypes during the development. To study the effect of rnf207b in hematopoiesis of Danio rerio we performed the knock-down of this gene by microinjection of morpholino oligonucleotides into one cell stage embryos. In these injected fish, we saw the effect in both thrombocyte and erythroid lineage, suggesting that rnf207b could be a regulator at the hierarchical level of progenitors or even more upstream. The results of developmental and tissue specific expression analysis then show that expression of rnf207b begins as early as 18 hpf, at the time of primitive hematopoiesis. Although rnf207b is expressed in the kidney (an...
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