Sökning: "HIF-2a"

Hittade 5 avhandlingar innehållade ordet HIF-2a.

  1. 1. Hypoxia-induced phenotypic modulation of human neuroblastoma cells

    Författare :Linda Holmquist Mengelbier; Institutionen för translationell medicin; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Medicin människa och djur ; Medicine human and vertebrates ; reoxygenation; HIF-2a; HIF-1a; differentiation; hypoxia; neuroblastoma;

    Sammanfattning : Neuroblastoma is a childhood tumour derived from cells of the sympathetic nervous system, which are arrested at low differentiation stages. Low differentiation stage and high tumour stage correlate to poor outcome. LÄS MER

  3. 2. Transcriptional regulation in neuroblastoma cells under normoxic and hypoxic conditions

    Författare :Annika Jögi; Institutionen för translationell medicin; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; oncology; cancerology; Cytologi; onkologi; cancer; Cytology; HIF-2; HIF-1; hypoxia; Id; HES-1; bHLH; Neuroblastoma; neuronal differentiation;

    Sammanfattning : The childhood malignancy neuroblastoma develops from early cells of the sympathetic nervous system (SNS), and the tumors often produce catecholamines. Neuroblastoma cells retain several characteristics of immature sympathetic cells including the expression of a number of transcription factors normally expressed during embryogenesis. LÄS MER

  4. 3. Hypoxia-inducible factors (HIFs) and biological responses, in hypoxia, inflammation and embryonic vascular development

    Författare :Maria Hägg; Göteborgs universitet; []
    Nyckelord :Embryonic stem cell; embryoid body; HIF-1a; hypoxia; VEGF; angiogenesis; vasculogenesis; peritoneal dialysis;

    Sammanfattning : ABSTRACT Low oxygen tension (hypoxia) is a major inducer of neovascularisation and evidence emerging has indicated that oxygen tension and hypoxia-inducible factors (HIFs), a family of oxygen-regulated heterodimeric transcription factors, may play important roles in vascular and hematopoietic development. This thesis has focused on studying molecular and cellular mechanisms, by which cells and organisms sense changes in oxygen tension, and how this signal is transduced by HIFs into downstream signalling. LÄS MER

  5. 4. Hypoxia and differentiation in human neuroblastoma cells

    Författare :Helén Nilsson; Institutionen för translationell medicin; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; ontogeny; embryology human ; Utvecklingsbiologi; teratologi; embryologi människa ; teratology; cytogenetik; Development biology; cytogenetics; Genetik; Genetics; Medicin människa och djur ; HIF; Medicine human and vertebrates ; MYCN; Hypoxia; differentiation; Neuroblastoma;

    Sammanfattning : The childhood tumour neuroblastoma is derived from immature cells of the sympathetic nervous system, which have become arrested at different maturation stages. Neuroblastoma is a malignancy with a high degree of heterogeneity, and there is a correlation between a poor differentiation status and a more aggressive phenotype. LÄS MER

  7. 5. Hypoxia in arterial and venous specification during vascular development

    Författare :Marcus Sohl; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : A developing embryo needs a constant supply of oxygen and nutrients in order to survive and grow into a functioning organism. During the earliest embryonic stages passive diffusion is enough to sustain the embryo. At later embryonic stages however, a system for delivering the necessary oxygen and nutrients to all parts of the embryo is needed. LÄS MER