Sökning: "Purines"

Visar resultat 1 - 5 av 17 avhandlingar innehållade ordet Purines.

  1. 1. Purine and Pyrazolopyrimidine Derivatives: Design and Synthesis of Chemical Tools for Biological Applications

    Författare :David Bliman; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; purine; pyrazolopyrimidine; caged compounds; protein kinases; protein-protein interactions; fluorescence; organic synthesis;

    Sammanfattning : Purines can be found in a multitude of naturally occurring compounds with a range of functions. This thesis describes the design and synthesis of purines and structurally related pyrazolopyrimidine derivatives intended for biological applications. LÄS MER

  3. 2. Inhibition of the MDM2/p53 Interaction Design, Synthesis and Evaluation of MDM2 Inhibitors

    Författare :Mariell Pettersson; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Protein-protein interactionProtein-protein interaction; MDM2 p53 interaction; MDM2 inhibitors; α- helix mimetics; β-hairpin; 2; 5-diketopiperazine; spiro-2; 5-diketopiperazine; purine; 8- triazolyl purine; solution conformational analysis; NAMFIS; fluorescence;

    Sammanfattning : Numerous essential cellular processes are regulated by protein-protein interactions (PPIs) and PPIs have therefore been recognised as potential new drug targets. The transcription factor p53 is often referred to as the guardian of the genome due to its involvement in DNA repair, induction of cell cycle arrest and cellular apoptosis. LÄS MER

  4. 3. Excitation and Ground-State Properties of Natural and Modified Nucleic Acid Bases

    Författare :Anders Holmén; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ab initio; linear dichroism; DFT; transition moment; tautomerism; structure; IR; spectra; DNA bases;

    Sammanfattning : The nucleic acid bases are the carriers of genetic information in DNA and RNA. They are also the main chromophores of nucleic acids and determine their optical properties and sensitivity to UV radiation. LÄS MER

  5. 4. Novel treatment of African trypanosomiasis

    Författare :Suman Kumar Vodnala; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Human African Trypanosomiasis (HAT) or Sleeping Sickness is fatal if untreated. Current drugs used for the treatment of HAT have difficult treatment regimens and unacceptable toxicity related issues. LÄS MER

  7. 5. ADP regulation of insulin secretion and beta-cell apoptosis

    Författare :Chanyuan Tan; Kardiologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; P2Y; β-cell; ADP; insulin; apoptosis; autocrine; ectonucleotidase;

    Sammanfattning : The aims of this dissertation were to investigate the effects of extracellular purines on insulin secretion, and apoptosis in mouse pancreatic islets and β-cells; to examine if high glucose and free fatty acids induces β-cell apoptosis via autocrine effects of ADP acting on the P2Y13 receptor; and to investigate the modulation of extracellular purines in vascular smooth muscle cells (VSMCs) through ectonucleotidase or ATP release under the effect of high glucose. The expression of the ADP receptors P2Y1 and P2Y13 were shown in both mouse pancreatic islets and isolated β-cells using real-time PCR quantification. LÄS MER