• Why do Pancreatic Tumor Cells Love the Liver?

Why do Pancreatic Tumor Cells Love the Liver?

Pancreatic ductal adenocarcinoma (PDAC) and its precursors secrete high levels of tissue inhibitor of metalloproteinases 1 (TIMP1) into the circulation, which activates hepatic stellate cells (HSCs) in liver. These cells help create a niche that promotes metastasis of pancreatic tumors to liver, researchers report in the November issue of Gastroenterology.

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  • A Forward Genetic Screen Identifies Suppressors of Hepatocellular Carcinogenesis

A Forward Genetic Screen Identifies Suppressors of Hepatocellular Carcinogenesis

Using 2 powerful high-throughput in vivo screening tools, researchers identified and validated 27 genes as suppressors of hepatocellular carcinoma (HCC), reported in the August issue of Gastroenterology. Their findings support the role of Ras signaling in development of HCC and provide new therapeutic targets. Sorafenib is the only treatment for patients

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  • Can a Vaccine Prevent Pancreatic Cancer Progression?

Can a Vaccine Prevent Pancreatic Cancer Progression?

Researchers have developed immunotherapy to slow progression of early-stage pancreatic tumors in mice. This approach might be developed to prevent progression of premalignant lesions to PDA, researchers report in the June issue of Gastroenterology. Pancreatic ductal adenocarcinoma (PDA) is a difficult cancer to treat because it is usually detected at

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  • Does Getting Rid of H pylori Stop Gastric Cancer’s Return?

Does Getting Rid of H pylori Stop Gastric Cancer’s Return?

Eradication of Helicobacter pylori after endoscopic resection of gastric lesions doesn’t prevent later development of new stomach tumors, researchers report in the May issue of Clinical Gastroenterology and Hepatology. H pylori infection can lead to gastric atrophy, intestinal metaplasia, and dysplasia or cancer—specifically non-cardia gastric cancer. It does so by inducing inflammation

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How Does a High-Fat Diet Contribute to Pancreatic Cancer?

A high-fat diet can promote development of pancreatic cancer, but cyclooxygenase-2 (COX2) inhibitors prevent this process, according to a mouse study published in the December issue of Gastroenterology. The mechanisms appear to involve activation of oncogenic KRAS and upregulation of COX2, which promotes pancreatic inflammation. Increased body mass index and

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Could Bone Marrow Cells Contribute to Stomach Cancer?

H pylori recruit bone marrow-derived cells to the gastric mucosa that contribute to tumor development, according to the February issue of Gastroenterology. H pylori infection promotes gastric carcinogenesis through many mechanisms, such as causing inflammation and producing virulence factors that alter gastric cell activity. Over time, these lead to metaplasia, dysplasia,

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New Cell Culture Technology for Colon Cancer and Barrett’s Esophagus

A new method for long-term culture of human primary colonic epithelium provides an important tool for studying colon stem cells, adenocarcinoma, colon cancer, and even Barrett’s esophagus, according to the November issue of Gastroenterology. Self-renewal of the small intestinal and colonic epithelium is mediated by proliferation of stem cells and

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