dc.contributor.author | Harrod, A | |
dc.contributor.author | Fulton, J | |
dc.contributor.author | Nguyen, VTM | |
dc.contributor.author | Periyasamy, M | |
dc.contributor.author | Ramos-Garcia, L | |
dc.contributor.author | Lai, C-F | |
dc.contributor.author | Metodieva, G | |
dc.contributor.author | de Giorgio, A | |
dc.contributor.author | Williams, RL | |
dc.contributor.author | Santos, DB | |
dc.contributor.author | Gomez, PJ | |
dc.contributor.author | Lin, M-L | |
dc.contributor.author | Metodiev, MV | |
dc.contributor.author | Stebbing, J | |
dc.contributor.author | Castellano, L | |
dc.contributor.author | Magnani, L | |
dc.contributor.author | Coombes, RC | |
dc.contributor.author | Buluwela, L | |
dc.contributor.author | Ali, S | |
dc.date.accessioned | 2021-11-04T14:14:24Z | |
dc.date.available | 2016-08-29 | |
dc.date.available | 2021-11-04T14:14:24Z | |
dc.date.issued | 2017-04-20 | |
dc.identifier.citation | Harrod, A., Fulton, J., Nguyen, V. et al. Genomic modelling of the ESR1 Y537S mutation for evaluating function and new therapeutic approaches for metastatic breast cancer. Oncogene 36, 2286–2296 (2017). https://doi.org/10.1038/onc.2016.382 | en_US |
dc.identifier.issn | 1476-5594 | |
dc.identifier.uri | https://qmro.qmul.ac.uk/xmlui/handle/123456789/75026 | |
dc.description.abstract | Drugs that inhibit estrogen receptor-α (ER) activity have been highly successful in treating and reducing breast cancer progression in ER-positive disease. However, resistance to these therapies presents a major clinical problem. Recent genetic studies have shown that mutations in the ER gene are found in >20% of tumours that progress on endocrine therapies. Remarkably, the great majority of these mutations localize to just a few amino acids within or near the critical helix 12 region of the ER hormone binding domain, where they are likely to be single allele mutations. Understanding how these mutations impact on ER function is a prerequisite for identifying methods to treat breast cancer patients featuring such mutations. Towards this end, we used CRISPR-Cas9 genome editing to make a single allele knock-in of the most commonly mutated amino acid residue, tyrosine 537, in the estrogen-responsive MCF7 breast cancer cell line. Genomic analyses using RNA-seq and ER ChIP-seq demonstrated that the Y537S mutation promotes constitutive ER activity globally, resulting in estrogen-independent growth. MCF7-Y537S cells were resistant to the anti-estrogen tamoxifen and fulvestrant. Further, we show that the basal transcription factor TFIIH is constitutively recruited by ER-Y537S, resulting in ligand-independent phosphorylation of Serine 118 (Ser118) by the TFIIH kinase, cyclin-dependent kinase (CDK)7. The CDK7 inhibitor, THZ1 prevented Ser118 phosphorylation and inhibited growth of MCF7-Y537S cells. These studies confirm the functional importance of ER mutations in endocrine resistance, demonstrate the utility of knock-in mutational models for investigating alternative therapeutic approaches and highlight CDK7 inhibition as a potential therapy for endocrine-resistant breast cancer mediated by ER mutations. | en_US |
dc.format.extent | 2286 - 2296 | |
dc.language | eng | |
dc.publisher | Springer Nature | en_US |
dc.relation.ispartof | Oncogene | |
dc.rights | This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/ 4.0/ | |
dc.subject | Antineoplastic Agents | en_US |
dc.subject | Breast Neoplasms | en_US |
dc.subject | CRISPR-Cas Systems | en_US |
dc.subject | Cell Proliferation | en_US |
dc.subject | Cyclin-Dependent Kinases | en_US |
dc.subject | Estrogen Antagonists | en_US |
dc.subject | Estrogen Receptor alpha | en_US |
dc.subject | Estrogens | en_US |
dc.subject | Female | en_US |
dc.subject | Gene Knock-In Techniques | en_US |
dc.subject | Histones | en_US |
dc.subject | Humans | en_US |
dc.subject | MCF-7 Cells | en_US |
dc.subject | Mutation | en_US |
dc.subject | Phosphorylation | en_US |
dc.subject | Serine | en_US |
dc.subject | Tamoxifen | en_US |
dc.title | Genomic modelling of the ESR1 Y537S mutation for evaluating function and new therapeutic approaches for metastatic breast cancer. | en_US |
dc.type | Article | en_US |
dc.rights.holder | © The Author(s) 2017 | |
dc.identifier.doi | 10.1038/onc.2016.382 | |
pubs.author-url | https://www.ncbi.nlm.nih.gov/pubmed/27748765 | en_US |
pubs.issue | 16 | en_US |
pubs.notes | Not known | en_US |
pubs.publication-status | Published | en_US |
pubs.publisher-url | https://doi.org/10.1038/onc.2016.382 | |
pubs.volume | 36 | en_US |
dcterms.dateAccepted | 2016-08-29 | |
rioxxterms.funder | Default funder | en_US |
rioxxterms.identifier.project | Default project | en_US |