H. pylori infection is the most important environmental risk to develop gastric cancer, mainly through its virulence factor CagA. In vitro models of CagA function have demonstrated a phosphoprotein activity targeting multiple cellular signaling pathways, while cagA transgenic mice develop carcinomas of the gastrointestinal tract, supporting oncogenic functions. However, it is still not complete...

18F-labeled fluorodeoxyglucose (FDG) uptake during FDG positron emission tomography seems to reflect increased radioresistance. However, the exact molecular mechanism underlying high glucose (HG)-induced radioresistance is unclear. In the current study, we showed that ionizing radiation-induced activation of the MEK-ERK-DAPK-p53 signaling axis is required for anoikis (anchorage-dependent apopto...

Apoptosis that occurs following detachment of a cell from the extracellular matrix (ECM) has been termed anoikis (Frisch and Screaton, 2001). This mode of cell death has been observed in numerous adherent cells, such as endothelial cells (Meredith et al. Disturbances of anoikis can be involved in the alteration of tissue physiology, such as in intestinal epithelial cell homeostasis (von Herbay ...

Activation of the nuclear transcription factor peroxisome proliferator-activated receptor ; (PPAR;) inhibits growth and survival of hepatocellular carcinoma (HCC) cell lines. To further investigate the function of PPAR; in HCC, PPAR; expression patterns in primary tumors were examined, and the responses of two HCC cell lines to PPAR; activation and inhibition were compared. PPAR; expression was...

Src kinase dysregulation contributes to cancer progression but mechanistic understanding for this contribution remains incomplete. Signal regulatory protein a1 (SIRPa1) is a tumor suppressor that is constitutively suppressed in v-Src-transformed cells, where restoration of SIRPa1 expression inhibits anchorage-independent growth. In this study, we investigated the role of the protein tyrosine ph...

The stress-activated protein kinase (SAPK) p38 can induce apoptosis, and its inhibition facilitates mammary tumorigenesis. We found that during mammary acinar morphogenesis in MCF-10A cells grown in three-dimensional culture, detachment of luminal cells from the basement membrane stimulated mitogen-activated protein kinase (MAPK) kinases 3 and 6 (MKK3/6) and p38α signaling to promote anoikis. p...

Selection of treatment options for clinically localized prostate cancer is based on a host of factors including the patient's age, overall health status, potential complications, clinical tumor stage and Gleason score. It is widely acknowledged that androgen independent disease remains the main obstacle to improving the survival and quality of life in patients with advanced prostate cancer. Apo...

Pancreatic cancer is one of the more common cancers with a poor prognosis. Some varieties of cancer are related to virus infection. As a virus-induced protein, APOBEC3G (A3G) presents extensive anti-virus ability, but the role of A3G in pancreatic cancer was previously unknown. The expression of A3G in pancreatic cancer was examined using TaqMan real-time qPCR, immunohistochemical and immunoflu...

Cancer cells often rely on glycolysis to obtain energy and support anabolic growth. Several studies showed that glycolytic cells are susceptible to cell death when subjected to low glucose availability or to lack of glucose. However, some cancer cells, including glycolytic ones, can efficiently acquire higher tolerance to glucose depletion, leading to their survival and aggressiveness. Although...

BACKGROUND Factors mediating the invasion of pancreatic cancer cells through the extracellular matrix (ECM) are not fully understood. METHODS In this study, sub-populations of the human pancreatic cancer cell line, MiaPaCa-2 were established which displayed differences in invasion, adhesion, anoikis, anchorage-independent growth and integrin expression. RESULTS Clone #3 displayed higher inv...