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1. 1. On the binding of growth-promoting polyamines to proteoglycans: Implications for growth-regulation and polycation-mediated gene transfer

   Författare :Mattias Belting; Institutionen för experimentell medicinsk vetenskap; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Genetics; cationic lipid.; gene transfer; gene therapy; cell growth; polyamine transport; spermine; polyamine; growth-inhibition; heparan sulphate; dermatan sulphate; Proteoglycan; glycosaminoglycan; cytogenetics; Genetik; cytogenetik;

   Sammanfattning : Initial investigations were directed at studying the interaction between polyamines and various glycosaminoglycans (GAGs). The polyamine spermine displayed binding to dermatan sulphate (DS) and heparan sulphate (HS) with similar (Kd, 3.9 x 10-4 M) and higher (Kd, 0.37 x 10-6 M) affinity, respectively, than to DNA. LÄS MER

3. 2. Polyamine analogues inhibit neuroblastoma cell growth

   Författare :Erika Söderstjerna; Biologiska institutionen; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; survivin; cell cycle; polyamine analogue; polyamines; apoptosis; neuroblastoma; MYCN;

   Sammanfattning : Abstract Neuroblastoma is a highly malignant neoplasm found in children. Although children with high-risk neuroblastoma respond to chemotherapy, relapses are common and an estimated long-time survival prognosis is approximately 15%. Thus, there is a tremendous need for new chemotherapeutic drugs for the treatment for neuroblastoma. LÄS MER

4. 3. Polyamine Pathway as Drug Target against Malaria

   Författare :Janina Sprenger; Biogena aminer; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Amino acid insertions; Crystallography; polyamine pathway; drug design; enzyme inhibition; ITC; ligand binding; malaria; Plasmodium falciparum; S-Adenosylmethionine decarboxylase; spermidine synthase.;

   Sammanfattning : Malaria, caused by the protozoan parasite Plasmodium falciparum is responsible for about 600.000 death cases every year. Mainly affected are populations of subtropical countries in Africa and the largest groups of victims are children below the age of 5 years. LÄS MER

5. 4. Transmethylation, Polyamines and Apoptosis in Amyotrophic Lateral Sclerosis

   Författare :Titti Ekegren; Håkan Askmark; Cecilia Gomes-Trolin; Sten-Magnus Aquilonius; Christopher Fowler; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Neurosciences; amyotrophic lateral sclerosis; neurodegeneration; transmethylation; polyamine; apoptosis; Neurovetenskap; Neurology; Neurologi;

   Sammanfattning : Amyotrophic lateral sclerosis (ALS) is a relentlessly progressive disorder characterized by degeneration of motor neurons in the cortex, brainstem and spinal cord. The patients usually die within 3-5 years after onset. The full etiology of ALS is unknown and many hypotheses have been proposed to explain the neurodegeneration. LÄS MER

7. 5. Nucleic Acids as Drug Targets -Interactions of Platinum Complexes, Polyamines, and siRNA with DNA and RNA Models

   Författare :Margareta Hägerlöf; Biokemi och Strukturbiologi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Kinetics; Kemi; Chemistry; AU-rich region; siRNA; Circular Dichroism; Polyamine; Modified Nucleoside; HPLC; Thermodynamic Stability; cisplatin; Hairpin; DNA and RNA conformation; RNA; DNA; Anticancer Drug; Platinum Complexes;

   Sammanfattning : Drugs targeting nucleic acids were studied in DNA and RNA model systems. The effects were investigated with respect to structural and thermodynamic influence, kinetics, and biological function. The drugs employed in this thesis were anticancer active platinum(II) complexes, polyamine derivatives, and siRNA. LÄS MER