Tumor neo-angiogenesis is regulated, in part, by the hypoxia-inducible gene HIF1. Evidence suggests HIF1 associates with polymerized microtubules and traffics to the nucleus. This study investigated the role of HIF1 in mediating the antitumor activity of two steroid-based sulfamate ester microtubule disruptors, STX140 and STX243, in vitro and in vivo. The effects of STX140, STX243 and the paren...

BACKGROUND Despite the promise shown by stem cells for restoration of cardiac function after myocardial infarction, the poor survival of transplanted cells has been a major issue. Hypoxia-inducible factor-1 (HIF1) is a transcription factor that mediates adaptive responses to ischemia. Here, we hypothesize that codelivery of cardiac progenitor cells (CPCs) with a nonviral minicircle plasmid carr...

Obese patients who have diabetes have higher cardiovascular disease (CVD) morbidity and mortality than individuals without diabetes, and about 70% of mortality in patients with diabetes is caused by CVD events, including coronary heart disease (CHD), hypertension, heart failure, and stroke (1). Data from the Framingham Heart Study (FHS) show that individuals with diabetes have double the CVD ri...

Background: This study investigates the effects of melatonin on the sperm quality, the level of antioxidant enzymes (TAC) and malondialdehyde (MDA) after the combination of swimming exercise and nandrolone decanoate (DECA). Materials and Methods: Two groups of male Wistar rats were treated for eight weeks as follows; group A consist of: CO (control), Sham, N (DECA), S (swimming) and NS (DECA pl...

Reduced vascular endothelial growth factor (VEGF) has been reported in bronchoalveolar lavage fluid and lungs of severe emphysema patients. Airway epithelial cells (AEC) are exposed to various environmental insults like cigarette smoke and bacterial infections, but their direct effect on VEGF production in well-differentiated primary human AEC remains unclear. The current authors determined the...

Hypoxia-inducible factor promotes erythropoiesis through coordinated cell type-specific hypoxia responses. GATA1 is essential to normal erythropoiesis and plays a crucial role in erythroid differentiation. In this study, we show that hypoxia-induced GATA1 expression is mediated by HIF1 in erythroid cells. Under hypoxic conditions, significantly increased GATA1 mRNA and protein levels were detec...

Oral squamous cell carcinoma (OSCC), which accounts for nearly 90% of head and neck cancers, is characterized by poor prognosis and a low survival rate. VEGF-A is the most established angiogenic factor involved in the angiogenic-regulated tumor progression. WISP-1/CCN4 is an extracellular matrix-related protein that belongs to the Cyr61, CTGF, Nov (CCN) family and regulates many biological func...

Heat-shock protein 90 (HSP90) is a major cellular chaperone protein. HSP90 supports the correct conformation, stabilization, activation, and localization of 'client' oncoproteins, many of which are involved in tumor progression. Therefore, the use of HSP90 inhibitors has become a new strategy in antitumor therapy. However, the effects of an HSP90 inhibitor on oral squamous cell carcinoma are st...