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Demonstrates that 27-hydroxycholesterol drives tumor growth and metastasis in mammary cancer models, indicating a mechanistic link between hypercholesterolemia and breast cancer.
Cholesterol and Cancer Obesity and high cholesterol levels are associated with an increased risk of breast cancer in post-menopausal women. Nelson et al. (p. 1094 ) found that a specific metabolite of cholesterol, 27-hydroxycholesterol (27HC), promoted tumor growth and metastasis in mouse models of mammary cancer by serving as a partial agonist for the estrogen receptor and the liver X receptor. The most aggressive human breast cancers were found to express the highest level of the enzyme that converts cholesterol to 27HC, suggesting that 27HC produced within tumors (in addition to circulating 27HC) may contribute to tumorigenesis.
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Nelson et al. (2013) studied this question.
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