Bacterial enterotoxins are associated with resistance to colon cancer

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Bacterial enterotoxins are associated with resistance to colon cancer.

One half million patients suffer from colorectal cancer in industrialized nations, yet this disease exhibits a low incidence in under-developed countries. This geographic imbalance suggests an environmental contribution to the resistance of endemic populations to intestinal neoplasia. A common epidemiological characteristic of these colon cancer-spared regions is the prevalence of enterotoxigen...

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Proliferative signaling by store-operated calcium channels opposes colon cancer cell cytostasis induced by bacterial enterotoxins.

Guanylyl cyclase C and accumulation of cGMP induced by bacterial heat-stable enterotoxins (STs) promote colon cancer cell cytostasis, serving as a tumor suppressor in intestine. Conversely, capacitative calcium entry through store-operated calcium channels (SOCs) is a key signaling mechanism that promotes colon cancer cell proliferation. The present study revealed that proliferative signaling b...

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Bacterial diarrheagenic heat-stable enterotoxins induce colon cancer cell cytostasis by targeting guanylyl cyclase C (GCC) signaling. Anticancer actions of these toxins are mediated by cyclic guanosine 3',5'-monophosphate (cGMP)-dependent influx of Ca2+ through cyclic nucleotide-gated channels. However, prolonged stimulation of GCC produces resistance in tumor cells to heat-stable enterotoxin-i...

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Genetic Variations in SMAD7 Are Associated with Colorectal Cancer Risk in the Colon Cancer Family Registry

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ژورنال

عنوان ژورنال: Proceedings of the National Academy of Sciences

سال: 2003

ISSN: 0027-8424,1091-6490

DOI: 10.1073/pnas.0434905100