Article ; Online: Super-enhancer acquisition drives oncogene expression in triple negative breast cancer.
2020 Volume 15, Issue 6, Page(s) e0235343
Abstract: Triple Negative Breast Cancer (TNBC) is a heterogeneous disease lacking known molecular drivers and effective targeted therapies. Cytotoxic chemotherapy remains the mainstay of treatment for TNBCs, which have significantly poorer survival rates compared ... ...
Abstract | Triple Negative Breast Cancer (TNBC) is a heterogeneous disease lacking known molecular drivers and effective targeted therapies. Cytotoxic chemotherapy remains the mainstay of treatment for TNBCs, which have significantly poorer survival rates compared to other breast cancer subtypes. In addition to changes within the coding genome, aberrant enhancer activity is a well-established contributor to tumorigenesis. Here we use H3K27Ac chromatin immunoprecipitation followed by sequencing (ChIP-Seq) to map the active cis-regulatory landscape in TNBC. We identify distinct disease subtypes associated with specific enhancer activity, and over 2,500 unique superenhancers acquired by tumor cells but absent from normal breast tissue. To identify potential actionable disease drivers, we probed the dependency on genes that associate with tumor-specific enhancers by CRISPR screening. In this way we identify a number of tumor-specific dependencies, including a previously uncharacterized dependency on the TGFβ pseudo-receptor BAMBI. |
---|---|
MeSH term(s) | Cell Line, Tumor ; Chromatin Immunoprecipitation ; Enhancer Elements, Genetic/genetics ; Female ; Gene Editing ; Gene Expression Regulation, Neoplastic ; Histones/chemistry ; Histones/genetics ; Histones/metabolism ; Humans ; Membrane Proteins/genetics ; Membrane Proteins/metabolism ; Oncogenes/genetics ; RNA, Guide, CRISPR-Cas Systems/metabolism ; Triple Negative Breast Neoplasms/genetics ; Triple Negative Breast Neoplasms/pathology |
Chemical Substances | BAMBI protein, human ; Histones ; Membrane Proteins ; RNA, Guide, CRISPR-Cas Systems |
Language | English |
Publishing date | 2020-06-25 |
Publishing country | United States |
Document type | Journal Article ; Research Support, Non-U.S. Gov't |
ZDB-ID | 2267670-3 |
ISSN | 1932-6203 ; 1932-6203 |
ISSN (online) | 1932-6203 |
ISSN | 1932-6203 |
DOI | 10.1371/journal.pone.0235343 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
More links
Kategorien
Order via subito
This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.