Search for dissertations about: "NS3"

Showing result 1 - 5 of 45 swedish dissertations containing the word NS3.

  1. 1. Kinetic studies of NS3 and NS5B from Hepatitis C virus : Implications and applications for drug discovery

    Author : Göran Dahl; Helena Danielson; Raffaele De Francesco; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Hepatitis C virus; NS3; NS5B; enzyme kinetics; inhibition; resistance; drug; Biochemistry; Biokemi; Biokemi; Biochemistry;

    Abstract : The aim of these studies was to increase our understanding of the non-structural proteins 3 and 5B (NS3 and NS5B) from the hepatitis C virus (HCV), and thereby contribute to the development of new and better drugs against HCV.By studying NS3 with substitutions identified to be associated with resistance to NS3 inhibitors in clinical trials (R155Q, A156T and D168V) it was found that not all inhibitors were affected, indicating that cross-resistance can be avoided. READ MORE

  2. 2. Design and Synthesis of Aspartic and Serine Protease Inhibitors : Targeting the BACE-1 and the HCV NS3 Protease

    Author : Fredrik Wångsell; Mats Larhed; Jari Yli-Kauhaluoma; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Alzheimer s disease; BACE-1; transition state mimetic; tertiary hydroxyl group; hydroxyethylene; statine; hydroxyethylamine; hepatitis C; HCV NS3; bioisostere; protease inhibitor.; Pharmaceutical chemistry; Läkemedelskemi; Medicinal Chemistry; Läkemedelskemi;

    Abstract : This thesis describes work done to design and synthesize protease inhibitors, with the intention of developing therapeutic agents for Alzheimer’s disease (AD) and the chronic liver condition caused by infection of the hepatitis C virus (HCV). AD is the most common form of dementia, and HCV infection is the primary reason for liver transplantation in industrialized countries. READ MORE

  3. 3. Design and Synthesis of Serine and Aspartic Protease Inhibitors

    Author : Fredrik Wångsell; Ingemar Kvarnström; Olle Karlsson; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; organic chemistry; organic synthesis; metathesis; HCV; NS3; protease; proline isosteres; inhibitor; aspartic protease inhibitors; hydroxyethylene; Organic synthesis; Organisk syntes;

    Abstract : This thesis describes the design and synthesis of compounds that areintended to inhibit serine and aspartic proteases. The first part of the text deals with preparation of inhibitors of the hepatitis C virus (HCV) NS3 serine protease. Hepatitis C is predominantly a chronic disease that afflicts about 170 million people worldwide. READ MORE

  4. 4. Structure-Based Design and Synthesis of Protease Inhibitors Using Cycloalkenes as Proline Bioisosteres and Combinatorial Syntheses of a Targeted Library

    Author : Fredrik Thorstensson; Ingemar Kvarnström; Charles Hedgecock; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; organic chemistry; organic synthesis; combinatorial synthesis; metathesis; olefin metathesis; thrombin; HCV; NS3; protease; proline isosteres; inhibitor; Organic synthesis; Organisk syntes;

    Abstract : Structure-based drug design and combinatorial chemistry play important roles in the search for new drugs, and both these elements of medicinal chemistry were included in the present studies. This thesis outlines the synthesis of protease inhibitors against thrombin and the HCV NS3 protease, as well as the synthesis of a combinatorial library using solid phase chemistry. READ MORE

  5. 5. Novel Procedures for Identification and Characterization of Viral Proteases Inhibitors

    Author : Angelica Ehrenberg; Helena Danielson; Celia Schiffer; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; drug discovery; viral proteases; inhibitors; Hepatitis C; NS3; cytomegalovirus; Biokemi; Biochemistry;

    Abstract : Viral proteases are often considered to be attractive drug targets because of their crucial function in the viral replication machinery. In order to increase our knowledge of these important targets and to contribute to the discovery and development of new antiviral drugs, the proteases from hepatitis C virus (HCV) and human cytomegalovirus (HCMV) have been produced and their interactions with inhibitors and fragments have been characterized, using enzyme inhibition and SPR biosensor based interaction assay. READ MORE