The primary function of erythrocytes is transport of oxygen from lungs to various tissues of the body. Red blood cell mass, due to this important role, must be controlled at precise levels. The number of erythrocytes is primarilly increased by the glycoprotein hormon erythropoietin, which expression is controlled by HIF (hypoxia inducible factor). Transcriptional factor HIF consists of the two subunits, HIFα and HIFβ. Under normoxic conditions, alfa subunit of HIF is hydroxylated by PHD protein. This hydroxylation provides a recognition motif for the VHL protein, a part of an E3 ubiquitin ligase complex that targets hydroxylated HIF for proteasomal degradation. Under hypoxic conditions, the degradation is inhibited. The alfa subunit is translocated to the nucleus, where binds the beta subunit and regulates gene expression. HIF pathway regulates a broad spectrum of cellular functions - energy metabolism, angiogenesis, apoptosis and many others. This diploma thesis is focused on HIF2α and its role in erythropoiesis. In this present study, we used CRISPR/Cas9 technology and created HEL (human erythroleukemia) cell line with knock-out of the gene for HIF2α (EPAS1). To reveal the role of HIF2α, we used specific HIF2α inhibitor in order to block its function in HEL cell line. We also tested this...
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:372916 |
| Date | January 2018 |
| Creators | Vilímková, Veronika |
| Contributors | Láníková, Lucie, Černý, Jan |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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