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UCP1 regulates ALDH-positive breast cancer stem cells through releasing the suppression of Snail on FBP1
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UCP1 regulates ALDH-positive breast cancer stem cells through releasing the suppression of Snail on FBP1
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Journal Article
UCP1 regulates ALDH-positive breast cancer stem cells through releasing the suppression of Snail on FBP1
2021
Overview
Uncoupling protein 1 (UCP1) has been implicated in ameliorating metabolic related disorders, of which most symptoms are risk factors for breast cancer. Here, we found that UCP1 was obviously downregulated in basal-like breast cancer (BLBC) and was positively correlated with improved survival. However, the underlying regulatory mechanisms remain largely unknown. Our studies showed that UCP1 inhibited tumor progression via suppressing aldehyde dehydrogenase (ALDH)-positive breast cancer stem cell (BCSC) population in BLBC. Furthermore, we found that UCP1 induced the upregulation of fructose bisphosphatase 1 (FBP1) which was previously blocked by Snail overexpression, and UCP1 decreased ALDH-positive BCSCs via FBP1-dependent metabolic rewiring, which could be reversed by Snail overexpression. In addition, breast cancer cells co-cultured with UCP1-deficient adipocytes had increased proportion of ALDH-positive BCSCs, indicating a potential protection role of UCP1 in tumor microenvironment. These results suggested that UCP1 suppressed BCSCs through inhibiting Snail-mediated repression of FBP1, and that upregulation of UCP1 might be a previously undescribed therapeutic strategy for combating breast cancer.
Publisher
Springer Nature B.V
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