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- W3092374143 endingPage "2931" @default.
- W3092374143 startingPage "2931" @default.
- W3092374143 abstract "Invasive lobular carcinoma of the breast (ILC) is strongly estrogen-driven and represents a unique context for estrogen receptor (ER) signaling. In ILC, ER controls the expression of the Wnt ligand WNT4, which is critical for endocrine response and anti-estrogen resistance. However, signaling mediated by WNT4 is cell type- and tissue-specific, and has not been explored in ILC. We utilized reverse phase protein array (RPPA) to characterize ER and WNT4-driven signaling in ILC cells and identified that WNT4 mediates downstream mTOR signaling via phosphorylation of S6 Kinase. Additionally, ER and WNT4 control levels of MCL-1, which is associated with regulation of mitochondrial function. In this context, WNT4 knockdown led to decreased ATP production and increased mitochondrial fragmentation. WNT4 regulation of both mTOR signaling and MCL-1 were also observed in anti-estrogen resistant models of ILC. We identified that high WNT4 expression is associated with similar mTOR pathway activation in ILC and serous ovarian cancer tumors, suggesting that WNT4 signaling is active in multiple tumor types. The identified downstream pathways offer insight into WNT4 signaling and represent potential targets to overcome anti-estrogen resistance for patients with ILC." @default.
- W3092374143 created "2020-10-15" @default.
- W3092374143 creator A5002147492 @default.
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- W3092374143 creator A5085475958 @default.
- W3092374143 date "2020-10-12" @default.
- W3092374143 modified "2023-10-15" @default.
- W3092374143 title "Estrogen Regulation of mTOR Signaling and Mitochondrial Function in Invasive Lobular Carcinoma Cell Lines Requires WNT4" @default.
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- W3092374143 doi "https://doi.org/10.3390/cancers12102931" @default.
- W3092374143 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7650584" @default.
- W3092374143 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/33053661" @default.
- W3092374143 hasPublicationYear "2020" @default.