Search for dissertations about: "hypoxia-inducible transcription factor"

Showing result 1 - 5 of 37 swedish dissertations containing the words hypoxia-inducible transcription factor.

2. 1. Hypoxia inducible factor 1 alpha : dependent and independent regulation of hematopoietic stem cells and leukemia

   Author : Camilla Halvarsson; Jan-Ingvar Jönsson; Mikael Sigvardsson; Kamil Kranc; Linköpings universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

   Abstract : This thesis has studied the role of low oxygen levels, or hypoxia, in hematopoietic stem cells (HSCs) and how, at the molecular level, it regulates stem cell maintenance and protects against oxidative stress induced by reactive oxygen species (ROS). HSCs reside within the bone marrow in specific niches created by a unique vascularized environment, which is suggested to be hypoxic and crucial for HSCs by maintaining a quiescent state of cell cycle and by redirecting metabolism away from the mitochondria to glycolysis. READ MORE

4. 2. Transcriptional Regulation by Hypoxia-Inducible Factors in Tumor Cells

   Author : Tobias Löfstedt; Institutionen för translationell medicin; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; cancerology; oncology; Biomedicinska vetenskaper; Medicine human and vertebrates ; Medicin människa och djur ; Cytology; Biomedical sciences; MXI1; ID2; differentiation; HIF; hypoxia; transcription; cancer; neuroblastoma; Cytologi; onkologi;

   Abstract : Cancer is a major cause of human morbidity and mortality, and the risk of developing cancer is about one in three life times. Neuroblastoma is the most common extra-cranial solid tumor among children and arises from early sympathetic nervous system (SNS) cells arrested in their development. READ MORE

5. 3. Hypoxia inducible factor-1α in renal cell carcinoma

   Author : Anders Lidgren; Börje Ljungberg; Torgny Rasmuson; Kjell Grankvist; Anders Bergh; Per-Uno Malmström; Umeå universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; renal cell carcinoma; hypoxia; RT-PCR; angiogenesis; western blot; tissue microarray; protein; mRNA; HIF-1 alpha; GLUT-1; survival; Urology and andrology; Urologi och andrologi;

   Abstract : Hypoxia Inducible Factor-1α in Renal Cell Carcinoma Departments of Surgical and Perioperative Sciences, Urology and Andrology; Radiation Sciences, Oncology; Medical Biosciences, Pathology; and Medical Biosciences, Clinical Chemistry, Umeå University, Umeå, Sweden Background: Renal cell carcinoma (RCC) accounts for approximately 2-3% of all human cancers. A distinguished feature of RCC is vascularisation and among the three dominating RCC types conventional RCC (cRCC) generally is more vascularised than papillary RCC (pRCC) and chromophobe RCC (chRCC). READ MORE

6. 4. Hypoxia inducible factor 1alpha : molecular mechanisms of regulation

   Author : William J Wilson; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : Hypoxia-Inducible Factor 1alpha (HIF-1alpha) is an important protein in the homeostatic control of genes in response to low oxygen, or hypoxia. It is thus also a key factor in the regulation of angiogenesis in response to hypoxia, including induction of vascular endothelial growth factor (VEGF) gene expression. READ MORE

7. 5. Mechanisms of activation of the hypoxia-inducible transcription factor 1a

   Author : Sallyann O'Brien; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : Hypoxia Inducible Factor-1 is a heterodimeric transcription factor composed of the bHLH/PAS factors HIF-1 alpha and HIF 1 beta/ARNT. Under hypoxic conditions HIF-1 becomes activated and transcriptionally upregulates a set of target genes involved in angiogenesis, erythropoesis and glycolysis. READ MORE