Search for dissertations about: "DSB"

Showing result 1 - 5 of 59 swedish dissertations containing the word DSB.

  2. 1. Radiation response in human cells : DNA damage formation, repair and signaling

    Author : Ann-Sofie Gustafsson; Bo Stenerlöw; Andrzej Wojcik; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; DNA damage; DNA repair; DSB; NHEJ; DNA-PK; ionizing radiation; heat-labile sites; Biomedical Radiation Science; Biomedicinsk strålningsvetenskap;

    Abstract : Ionizing radiation induces a range of different DNA lesions. In terms of mutation frequency and mammalian cell survival, the most critical of these lesions is the DNA double-strand break (DSB). DSB left unrepaired or mis-repaired may result in chromosomal aberrations that can lead to permanent genetic changes or cell death. READ MORE

  4. 2. Formation and repair of complex DNA damage induced by ionizing radiation

    Author : Karin Magnander; Göteborgs universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; ionizing radiation; clustered damage; chromatin structure; DSB;

    Abstract : DNA is the critical target when cells are exposed to ionizing radiation, a potent stressor with capacity to produce complex DNA damages, thereby increasing the risk of cancer. DNA and associated histones form chromatin, which is an effective protection against ionizing radiation. READ MORE

  5. 3. Role of Non-Homologous End-Joining in Repair of Radiation-Induced DNA Double-Strand Breaks

    Author : Karin Karlsson; Bo Stenerlöw; Jörgen Carlsson; Thomas Helleday; Uppsala universitet; []
    Keywords : Molecular biology; DNA damage; DNA repair; DSB; NHEJ; DNA-PK; ionising radiation; high-LET; heat-labile sites; PFGE; Molekylärbiologi;

    Abstract : Efficient and correct repair of DNA damage, especially DNA double-strand breaks (DSBs), is vital for the survival of individual cells and organisms. Defects in the DNA repair may lead to cell death or genomic instability and development of cancer. READ MORE

  6. 4. Hypothermia and radiation. Effects on DNA, chromatin and cellular survival

    Author : Kerstin Elmroth; Göteborgs universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Cells; temperature; irradiation; dsb; survival; fluorescent nucleoid assay; hypothermia;

    Abstract : The effect of ionising radiation on cells can be modulated by several physico-chemical factors. The aim of this study was to investigate if hypothermic (sub-physiological) temperatures (2°C-28°C) may influence the effect of X-rays on cellular damage in human normal fibroblasts and in a human breast adenocarcinoma cell line, MCF-7. READ MORE

  7. 5. Identification of novel BRCA2-binding proteins that are essential for meiotic homologous recombination

    Author : Jingjing Zhang; Göteborgs universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; meiosis; DSB; cancer; BRCA2; MEILB2; BRME1; HR; RAD51; DMC1; DDR;

    Abstract : Meiotic recombination is a molecular process in which the induction and repair of programmed DNA double-strand breaks (DSBs) creates genetic exchange between homologous chromosomes and thus increases genetic diversity and ensures chromosome segregation. Breast cancer susceptibility gene 2 (BRCA2) is a potent cancer suppressor and is required for DSB repair by homologous recombination (HR) in mitosis. READ MORE