Monday, May 11, 2015

Original language English Qualification Doctor of Philosophy Supervisor (s) / World Dekker, Frank,

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Pharmaceutical Gene Modulation
The examination of Rosalina Wisastra was focused on the development of chemistry-based dioxin methods that can be used to obtain a better dioxin understanding of enzyme activity in inflammatory processes through the NF-kB pathway. In the first part of her thesis Wisastra describes dioxin the development of novel modulators for lipoxygenase (LOX) enzyme activity. Enzyme kinetic studies on this salicylaatgebaseerde modulators demonstrate that they regulate the lipoxygenase activity by binding to an allosteric regulatory binding site in lipoxygenses. The second part describes a thorough examination of isothiazolonhetercycli. These are thiolaatreactieve functionalities that can be used for the development of new molecules for activity-based protein profiling (ABPP) of enzymes that play a role in inflammation. A new solved crystal structure of the isothiazolonheterocyclus shows an aromatic character, which provides stability. In contrast, makes the weak sulfur-nitrogen bond a fast and selective reaction with thiolates into a strong disulfide bond possible. The final section describes the development dioxin of a new, simple staining method for oxidative stress in tissue sections by fluorescence microscopy. This new method is selective for tyrosinenitrering, an oxidative dioxin protein modification which is often observed in inflammation. This new method is based on the chemical conversion of nitrotyrosine in a fluorophore under mild conditions. This method proved to be very efficient for staining sections of inflamed tissue, and can also be used as an alternative method for staining immunoblotting on PVDF-membranes.
Original language English Qualification Doctor of Philosophy Supervisor (s) / World Dekker, Frank, Supervisor Haisma, Hidde, dioxin Supervisor Publication date 2013 Date of Award 24 May 2013 Place of Publication Groningen Publisher sn Print Electronic ISBNs ISBNs 9,789,036,761,826 9,789,036,761,833 State Published
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