Tumor hypoxia is a common characteristic of most solid tumors and is correlated with poor prognosis for patients partly because hypoxia promotes resistance to cancer therapy. Hypoxia selects cancer cells that are resistant to apoptosis and allows the onset of mechanisms that promote cancer cells survival including autophagy. Previously, we showed that human hepatoma HepG2 cells were protected u...

Hypoxia is a common cause of cell death and is implicated in many disease processes including stroke and chronic degenerative disorders. In response to hypoxia, cells express a variety of genes, which allow adaptation to altered metabolic demands, decreased oxygen demands, and the removal of irreversibly damaged cells. Using polymerase chain reaction-based suppression subtractive hybridization ...

Myelodysplastic Syndromes (MDS) are clonal neoplasms where stem/progenitor cells endowed with self-renewal and capable of perpetuating the disease have been demonstrated. It is known that oxygen tension plays a key role in driving normal hematopoiesis and that hematopoietic stem cells are maintained in hypoxic areas of the bone marrow (BM). Hypoxia could also regulate leukemic/dysplastic hemato...

Patients with clear cell renal cell carcinoma (ccRCC) are often diagnosed with both von Hippel-Lindau (VHL) mutations and the constitutive activation of hypoxia-inducible factor-dependent signaling. In this study, we investigated the effects of long-term hypoxia in 786-O, a VHL-defective renal cell carcinoma cell line, to identify potential genes and microRNAs associated with tumor malignancy. ...

Hypoxic conditions exist within pancreatic adenocarcinoma, yet pancreatic cancer cells survive and replicate within this environment. To understand the mechanisms involved in pancreatic cancer adaptation to hypoxia, we analyzed expression of a regulator of hypoxia-induced cell death, Bcl-2/adenovirus E1B 19 kDa interacting protein 3 (BNIP3). We found that BNIP3 was down-regulated in nine of nin...

Background Imbalanced nutritional supply and demand in the tumor microenvironment often leads to hypoxia. The subtle interaction between hypoxia immune cell behavior plays an important role occurrence development. However, functional relationship remains unclear. Therefore, we aimed investigate effect of on intestinal microenvironment. Method We extracted names hypoxia-related genes from Gene S...

Collective cell migration is a key feature of transition ductal carcinoma in situ (DCIS) to invasive (IDC) among many other cancers, yet the microenvironmental factors and underlying mechanisms that trigger collective remain poorly understood. Here, we investigated two factors, tumor-intrinsic hypoxia tumor-secreted (secretome), as triggers using three-dimensional (3D) discrete-sized microtumor...

PURPOSE To develop an hypoxia-regulated retinal pigment epithelium (RPE)-specific adeno-associated virus (AAV) gene transfer platform that exploits hypoxia as a physiologic trigger for an early antiangiogenic treatment strategy directed at arresting neovascularization in the eye. METHODS Tissue-specific and hypoxia-regulated expression vectors were constructed with tandem combinations of hypo...

Abstract Diffuse midline gliomas (DMGs) are the most challenging to treat pediatric high-grade gliomas, with a dismal prognosis of 9 15 months median survival. The ones localized in pons not accessible surgery and rely on radiotherapy treatment. majority DMGs confer mutation histone 3 variants (H3.3 or H3.1), leading lysine 27 methionine substitution (H3K27M) consequent global decrease H3K27 tr...