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The microbiome and breast cancer: a review

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Abstract

The human microbiome plays an integral role in physiology, with most microbes considered benign or beneficial. However, some microbes are known to be detrimental to human health, including organisms linked to cancers and other diseases characterized by aberrant inflammation. Dysbiosis, a state of microbial imbalance with harmful bacteria species outcompeting benign bacteria, can lead to maladies including cancer. The microbial composition varies across body sites, with the gut, urogenital, and skin microbiomes particularly well characterized. However, the microbiome associated with normal breast tissue and breast diseases is poorly understood. Collectively, studies have shown that breast tissue has a distinct microbiome with particular species enriched in the breast tissue itself, as well as the nipple aspirate and gut bacteria of women with breast cancer. More importantly, the breast and associated microbiomes may modulate therapeutic response and serve as potential biomarkers for diagnosing and staging breast cancer.

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JC, JD, and VP collected and analyzed relevant literature. JC, JD, VP, and MH drafted the manuscript. JC, JD, VP, MN, SA, MM, SS, and MH critically revised the manuscript for content. All authors read and approved the final manuscript.

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Correspondence to Mehran Habibi.

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All authors declare that they have no conflicts of interest.

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This article does not contain any studies with human participants or animals performed by any of the authors.

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Chen, J., Douglass, J., Prasath, V. et al. The microbiome and breast cancer: a review. Breast Cancer Res Treat 178, 493–496 (2019). https://doi.org/10.1007/s10549-019-05407-5

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  • DOI: https://doi.org/10.1007/s10549-019-05407-5

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