FOXO transcription factors both suppress and support breast cancer progression

Marten Hornsveld, Lydia M.M. Smits, Maaike Meerlo, Miranda Van Amersfoort, Marian J.A. Groot Koerkamp, Dik van Leenen, David E.A. Kloet, Frank C.P. Holstege, Patrick W.B. Derksen, Boudewijn M.T. Burgering*, Tobias B. Dansen

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

6 Citations (Scopus)

Abstract

FOXO transcription factors are regulators of cellular homeostasis and putative tumor suppressors, yet the role of FOXO in cancer progression remains to be determined. The data on FOXO function, particularly for epithelial cancers, are fragmentary and come from studies that focused on isolated aspects of cancer. To clarify the role of FOXO in epithelial cancer progression, we characterized the effects of inducible FOXO activation and loss in a mouse model of metastatic invasive lobular carcinoma. Strikingly, either activation or loss of FOXO function suppressed tumor growth and metastasis. We show that the multitude of cellular processes critically affected by FOXO function include proliferation, survival, redox homeostasis, and PI3K signaling, all of which must be carefully balanced for tumor cells to thrive. Significance: FOXO proteins are not solely tumor suppressors, but also support tumor growth and metastasis by regulating a multitude of cellular processes essential for tumorigenesis.

Original languageEnglish
Pages (from-to)2356-2369
Number of pages14
JournalCancer Research
Volume78
Issue number9
DOIs
Publication statusPublished - 1 May 2018

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