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Animal experimentation

Study into colon cancer highlights usefulness of pig model

The pig model can help in developing preventive strategies against gut bacterial dysbiosis and inflammation-promoted diseases, such as colon cancer, researchers find.

Evidence suggests that a high-calorie diet (HCD) can cause colon cancer and that this could be related to colon stem cell dysregulation.

In Cancer Prevention Research (online, 2 June 2017), researchers studied the colonic stem cells of pigs fed an HCD and those of pigs fed a standard diet over 13 weeks[1].

They found that the HCD resulted in colon stem cell proliferation and expansion — two important early markers of colon cancer. They also discovered that pigs maintain two types of stem cells — ASCL-2 positive and BMI-1 positive — in the colon, similar to the human system.

The researchers say the findings are important given that most cases of colon cancer are thought to be related to diet and lifestyle. They also suggest that the pig model could be more relevant than mouse models for the development of preventive and therapeutic agents/strategies against disease as mice lack colonic BMI-1 stem cells.

Citation: Clinical Pharmacist DOI: 10.1211/CP.2017.20203465

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Supplementary images

  • Colon cancer cells under a microscope

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