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Abstract Title:

A Sucrose-Enriched Diet Promotes Tumorigenesis in Mammary Gland in Part through the 12-Lipoxygenase Pathway.

Abstract Source:

Cancer Res. 2016 Jan 1 ;76(1):24-9. PMID: 26729790

Abstract Author(s):

Yan Jiang, Yong Pan, Patrea R Rhea, Lin Tan, Mihai Gagea, Lorenzo Cohen, Susan M Fischer, Peiying Yang

Article Affiliation:

Yan Jiang

Abstract:

Epidemiologic studies have shown that dietary sugar intake has a significant impact on the development of breast cancer. One proposed mechanism for how sugar impacts cancer development involves inflammation. In the current study, we investigated the impact of dietary sugar on mammary gland tumor development in multiple mouse models, along with mechanisms that may be involved. We found that sucrose intake in mice comparable with levels of Western diets led to increased tumor growth and metastasis, when compared with a nonsugar starch diet. This effect was ascribed in part to increased expression of 12-lipoxygenase (12-LOX) and its arachidonate metabolite 12-hydroxy-5Z,8Z,10E,14Z-eicosatetraenoic acid (12-HETE). We determined that fructose derived from the sucrose was responsible for facilitating lung metastasis and 12-HETE production in breast tumors. Overall, our data suggested that dietary sugar induces 12-LOX signaling to increase risks of breast cancer development and metastasis. Cancer Res; 76(1); 24-29.©2016 AACR.

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Sayer Ji
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