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A potential route for human tumor gene therapy
May 21, 2008The type 1 Na+/H+ exchanger (NHE1) is a transmembrane protein found in all eukaryotic cells. One of its functions is to evacuate excessive H+ in the cytoplasm by means of Na+-H+ exchange, resulting in stable intracellular pH value. Inhibition of the upregulation of NHE-1 gene expression in human gastric carcinoma cells can induce intracellular acidification, resulting in apoptosis of tumor cells, which is helpful for the treatment of tumors.
This study, performed by a team led by Professor Hai-Feng Liu, is described in a research article to be published on April 14, 2008 in the World Journal of Gastroenterology.
Previous studies have proven that the significantly higher expression level of NHE1 protein in gastric carcinoma tissues than in normal gastric tissues is closely associated with the genesis and progression of tumors, suggesting that NHE1 can be used as the target in treatment of tumors. However, further studies are needed to know whether the intervention of the antisense NHE1 gene can decrease type 1 Na+/H+ exchange of membranous ion exchange protein in gastric carcinoma cells, and the effects on the biological behaviors of gastric carcinoma cells.
The purpose of transfection of the antisense NHE1 gene into the human gastric carcinoma cell line SGC-7901 is to investigate the effects of antisense therapy targeting the NHE1 gene on the malignant phenotypes of gastric carcinoma cells. The results indicate NHE1 genes are among the important genes in maintaining the phenotypes of the SGC-7901 cell line. NHE1 might be closely associated with the malignant biological behaviors of tumor cells, so the phenotypes of the tumor will be restrained when NHE1 is inhibited.
This is an interesting article examining the effect of inhibiting NHE1 on tumor survival. It would be useful to make clearer in the abstract what NHE1 is. Further research should be done on gene therapy for gastric carcinomas.
World Journal of Gastroenterology
The purpose of transfection of the antisense NHE1 gene into the human gastric carcinoma cell line SGC-7901 is to investigate the effects of antisense therapy targeting the NHE1 gene on the malignant phenotypes of gastric carcinoma cells. The results indicate NHE1 genes are among the important genes in maintaining the phenotypes of the SGC-7901 cell line. NHE1 might be closely associated with the malignant biological behaviors of tumor cells, so the phenotypes of the tumor will be restrained when NHE1 is inhibited.
This is an interesting article examining the effect of inhibiting NHE1 on tumor survival. It would be useful to make clearer in the abstract what NHE1 is. Further research should be done on gene therapy for gastric carcinomas.
World Journal of Gastroenterology
Gastric Carcinoma Current Events and Gastric Carcinoma News RSSYes-associated protein: Early diagnosis of gastric carcinoma
Yes-associated protein (YAP) is a type of cellular adaptor protein and transcriptional co-activator.
PPAR-g agonists have potential therapeutic role in gastric carcinoma?
Recently, the potential of PPAR-γ as a target for the prevention and treatment of cancer has been widely studied.
Candidate markers for gastric cancer
The sequencing of the human genome has opened the door for proteomics by providing a sequence-based framework for mining proteomes.
A new insight on ethanol-induced gastric mucosa injury
Many people all over the world indulge themselves in drinking, which is correlated to a wide spectrum of medical, psychological, behavioral, and social problems.
U of T researchers reveal Epstein-Barr virus protein contributes to cancer
Researchers at the University of Toronto have discovered that the EBNA1 protein of Epstein-Barr virus (EBV) disrupts structures in the nucleus of nasopharyngeal carcinoma (NPC) cells, thereby interfering with cellular processes that normally prevent cancer development.
Gastric juice for diagnosis of H. pylori infection in patients on proton pump inhibitors
This study determined the efficiency of a gastric juice PCR test for the detection of H. pylori infection in patients receiving PPI therapy and compared it with histology and gastric biopsy PCR.
How is H pylori adhesion to gastric cells associated with MUC1 mucin VNTR size?
The Gram negative bacterium H pylori is involved in the pathogenesis of several gastrointestinal diseases, ultimately leading to gastric carcinoma. Adhesion of the bacteria to the gastric mucosa is an essential step for colonization and infection.
A new prognostic tool for gastric carcinomas? (and maybe other cancers)
A new way to identify gastric carcinoma patients with high probability of develop a more aggressive form of disease has just been described on the June issue of the journal Glycobiology.
Helicobacter pylori Acquisition Most Common In Young Children (P931)
A US study in this week's issue of THE LANCET highlights how most newly acquired infections of the intestinal bacterium Helicobacter pylori probably occur in children younger than 10 years of age. The authors of the study suggest that treatment and prevention strategies should therefore be targeted at young children. H pylori infection is associated with many gastro-intestinal disorders including gastritis, gastric ulcer, duodenal ulcer, gastric carcinoma, and primary gastric -cell lymphoma. H pylori is common worldwide, but the age at which it is acquired is unclear. Hoda Malaty and colleagues from Baylor College of Medicine, Houston, USA, studied 224 children (99 black, 125 white
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