Abstract
The chromatin state is finely tuned to regulate function and specificity for transcription factors such as oestrogen receptor alpha (ER), which contributes to cell growth in breast cancer. ER transcriptional potential is mediated, in large part, by the specific associated proteins and co-factors that interact with it. Despite the identification and characterisation of several ER coregulators, a complete and systematic view of ER-regulating chromatin modifiers is lacking. By exploiting a focused siRNA screen that investigated the requirement for a library of 330 chromatin regulators in ER-mediated cell growth, we find that the NuRD and coREST histone deacetylation complexes are critical for breast cancer cell proliferation. Further, by proteomic and genomics approaches, we discover the transcription factor TRPS1 to be a key interactor of the NuRD and coREST complexes. Interestingly, TRPS1 gene amplification occurs in 28% of human breast tumours and is associated with poor prognosis. We propose that TRPS1 is required to repress spurious binding of ER, where it contributes to the removal of histone acetylation. Our data suggest that TRPS1 is an important ER-associated transcriptional repressor that regulates cell proliferation, chromatin acetylation and ER binding at the chromatin of cis-regulatory elements.
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TRPS1 regulates the opposite effect of progesterone via RANKL in endometrial carcinoma and breast carcinoma
Cell Death Discovery Open Access 21 June 2023
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Acknowledgements
We would like to thank Clive D’Santos and Chris Taylor from the CRUK CI Proteomics core, James Hadfield and the other members of the Genomics core, and Suraj Menon from the Bioinformatics core. Jason Carroll is supported by an ERC Consolidator grant and a Komen Scholar Award. We would like to acknowledge the support of the University of Cambridge, Cancer Research UK and Hutchison Whampoa Limited.
Author contributions
AAS, HM, KWM and JSC designed the project and wrote the manuscript. AAS, HM and AM performed the experiments and analysed the data.
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These authors contributed equally: A.A. Serandour and H. Mohammed.
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Serandour, A.A., Mohammed, H., Miremadi, A. et al. TRPS1 regulates oestrogen receptor binding and histone acetylation at enhancers. Oncogene 37, 5281–5291 (2018). https://doi.org/10.1038/s41388-018-0312-2
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DOI: https://doi.org/10.1038/s41388-018-0312-2
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