Proteomická analýza membránových proteinů myokardu

Oliva, Tomáš

Cardiovascular diseases (CVD) are the leading cause of morbidity and mortality in Europe. Over 4 million people die from CVDs annually and another 11 million people develops CVDs every year. These numbers show that there is a need for better diagnostic, prognostic and predictive biomarkers and, more importantly, a need for new and more efficient drugs. Integral membrane proteins (IMPs) are ideal candidates for new drug targets. However, a study of IMPs represents a major challenge in current proteomics. This challenge is associated with the low abundance of IMPs, their low solubility in aqueous solvents and the absence of trypsin cleavage sites in their transmembrane segments. To overcome these issues, methods that selectively target either N-glycosylated extra-membrane segments (CSC, SPEG, N-glyco-FASP) or transmembrane segments (hpTC) were developed. In this thesis we employed a combination of two N-glyco-capture methods (SPEG and N-glyco-FASP) performed on two different samples (membrane-enriched fraction and total tissue lysate) with analysis of membrane-embedded IMP segments by hpTC and with standard non-targeted "detergent+trypsin" approach to analyze rat myocardial membrane proteome. We also performed an evaluation of employed methods for preparation of membrane fraction by western blot...

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