• Model: Microfabricated Crypt Scaffolds for Studying Human Colon Stem Cells

Model: Microfabricated Crypt Scaffolds for Studying Human Colon Stem Cells

Researchers created an in vitro human colon crypt array that provides an accurate representation of human intestinal crypts, reported in the February issue of Cellular and Molecular Gastroenterology and Hepatology. This system re-creates an intestinal epithelium with a high density of polarized crypts that respond in a physiologic manner to growth factors, metabolites, or

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  • What can we do with Gastrointestinal Organoids?

What can we do with Gastrointestinal Organoids?

Researchers review the latest discoveries from studies of tissue-derived and pluripotent stem cell–derived intestinal, gastric, esophageal, liver, and pancreatic organoids in the May issue of Gastroenterology. Studies of organoids have provided valuable information about GI development, tissue homeostasis, and disease and might be used to develop personalized medicines. In vitro organoid cultures are

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In Vitro Stomach?

Researchers have developed an advanced, long-term, 3-dimensional organoid culture system for primary, untransformed human gastric epithelium. The system, described in the January issue of Gastroenterology, provides evidence for the presence of stem cells in adult human gastric tissue and can be used to study changes that occur in the gastric epithelium during

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  • How Does Smoking Lead to Pancreatic Cancer?

How Does Smoking Lead to Pancreatic Cancer?

Nicotine promotes pancreatic carcinogenesis by disrupting signaling and transcriptional pathways to cause dedifferentiation of acinar cells, researchers report in the November issue of Gastroenterology. One fourth of all deaths from pancreatic ductal adenocarcinoma (PDAC) are associated with tobacco use, and heavy smoking increases risk for PDAC 6-fold. Although smokers develop PDAC

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A Better Way to Make Pluripotent Cells From Liver Cells

Researchers have identified an efficient method for creating pluripotent stem cells from differentiated liver cells, according to the April issue of Gastroenterology. This technology could lead to new methods for therapeutic regeneration of diseased or damaged tissues. Embryonic stem cells are pluripotent, in that they can form the 3 germ

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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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