Search for dissertations about: "polyamines"

Showing result 11 - 15 of 45 swedish dissertations containing the word polyamines.

  2. 11. Cationic Interactions with Nucleic Acids With Focus on Anticancer Active Platinum(II) Complexes

    Author : Åse Sykfont Snygg; Biokemi och Strukturbiologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; in-line cleavage; Cisplatin; oxaliplatin; circular dichroism; DENSPM; polyamines; siRNA; pseudoknot; RNA; thermal melting; anticancer active Pt II complex; DNA;

    Abstract : It is well documented that the antitumour activity of the Pt(II)-complex cisplatin, and similar anticancer active complexes, is a result of metalation of DNA, and thereby inhibition of cell proliferation. Since nucleic acids are polyanions at physiological pH, the rate of adduct formation with positively charged complex, as the hydrolyzed Pt(II) complexes studied in this work, is influenced by the ionic environment surrounding the polymer. READ MORE

  4. 12. REGULATED UPTAKE OF BIOPOLYMERS Role of cell surface proteoglycans Implications for drug and gene delivery

    Author : Staffan Sandgren; Bröstcancer-genetik; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Medicin människa och djur ; Cytology; oncology; proliferation; differentiation; Medicine human and vertebrates ; growth factor; cancer; drug delivery; gene therapy; LL-37; HIV-Tat; cell penetrating peptides; polyamines; heparan sulfate; onkologi; Cytologi; cancerology; internalization; proteoglycans;

    Abstract : Cells continuously export, import, and recycle molecules over the plasma membrane. Internalization, i.e. cellular import of extracellular material, is a fundamental process, which provides cells with nutrients and enables the immune cells of higher organisms to remove debris, sample their surroundings for antigens and to fight microbes. READ MORE

  5. 13. Effects of polyamine pool manipulation on genes expressed during the cell cycle

    Author : Pia Berntsson; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Animal physiology; cyclin A; ODC; MCF-7; mitotic shake off; DENSPM; CHO; cDNA microarray; cell cycle; spermine; Djurfysiologi; AdoMetDC; 2D gel electrophoresis; polyamines; spermidine; putrescine;

    Abstract : The polyamines - putrescine, spermidine and spermine - are polycations found within cells. They have been shown to be essential for optimal cell proliferation and cell survival. Cells maintain their polyamine levels in a well-regulated system involving biosynthesis, catabolism and uptake/excretion. READ MORE

  6. 14. Polyamine analogues inhibit neuroblastoma cell growth

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

    Abstract : 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. READ MORE

  7. 15. Malaria and relapsing fever Borrelia : interactions and potential therapy

    Author : Jenny Lundqvist; Cathrine Persson; Antonio Barragan; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Malaria; Plasmodium; relapsing fever; Borrelia; persistent; concomitant infections; polyamines; Molecular biology; Molekylärbiologi; Microbiology; immunology; infectious diseases; Mikrobiologi; immunologi; infektionssjukdomar; molekylär bioteknik inst f molekylärbiologi ; molecular biotechnology dept of molecular biology ; Infectious Diseases; infektionssjukdomar;

    Abstract : Infectious diseases such as malaria and relapsing fever borreliosis (RF), cause severe human mortality and morbidity in developing countries. Malaria, caused by Plasmodium spp. parasites, is estimated by the World Health Organization to cause 1.5-2. READ MORE