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Open AccessIntegrative analysis of genomic amplification-dependent expression and loss-of-function screen identifies ASAP1 as a driver gene in triple-negative breast cancer progression
The genetically heterogeneous triple-negative breast cancer (TNBC) continues to be an intractable disease, due to lack of effective targeted therapies. Gene amplification is a major event in tumorigenesis. Gen...
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Open AccessMulti-targeted kinase inhibition alleviates mTOR inhibitor resistance in triple-negative breast cancer
Owing to its genetic heterogeneity and acquired resistance, triple-negative breast cancer (TNBC) is not responsive to single-targeted therapy, causing disproportional cancer-related death worldwide. Combined t...
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Article
Open AccessA kinase inhibitor screen identifies a dual cdc7/CDK9 inhibitor to sensitise triple-negative breast cancer to EGFR-targeted therapy
The effective treatment of triple-negative breast cancer (TNBC) remains a profound clinical challenge. Despite frequent epidermal growth factor receptor (EGFR) overexpression and reliance on downstream signall...
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Open AccessAn 8-gene mRNA expression profile in circulating tumor cells predicts response to aromatase inhibitors in metastatic breast cancer patients
Molecular characterization of circulating tumor cells (CTC) is promising for personalized medicine. We aimed to identify a CTC gene expression profile predicting outcome to first-line aromatase inhibitors in m...
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Open AccessDC-SCRIPT is a novel regulator of the tumor suppressor gene CDKN2B and induces cell cycle arrest in ERα-positive breast cancer cells
Breast cancer is one of the most common causes of cancer-related deaths in women. The estrogen receptor (ERα) is well known for having growth promoting effects in breast cancer. Recently, we have identified DC...
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Open AccessElevated APOBEC3B Correlates with Poor Outcomes for Estrogen-Receptor-Positive Breast Cancers
Recent observations connected DNA cytosine deaminase APOBEC3B to the genetic evolution of breast cancer. We addressed whether APOBEC3B is associated with breast cancer clinical outcomes. APOBEC3B messenger RNA (m...
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Article
Growth and metastatic behavior of molecularly well-characterized human breast cancer cell lines in mice
Breast cancer (BC) is a disease with intra- and inter-tumor heterogeneity, and models representing the complete variety of clinical BC phenotypes are not available. We explored the tumor growth potential and m...
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Article
Hotspot mutations in PIK3CA associate with first-line treatment outcome for aromatase inhibitors but not for tamoxifen
PIK3CA mutations occur frequently in breast cancer, predominantly in exons 9 and 20. The aim of this retrospective study is to evaluate the PIK3CA mutation status for its relationship with progno...
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Open AccessmiRNA expression profiling of 51 human breast cancer cell lines reveals subtype and driver mutation-specific miRNAs
Breast cancer is a genetically and phenotypically complex disease. To understand the role of miRNAs in this molecular complexity, we performed miRNA expression analysis in a cohort of molecularly well-characte...
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Article
Loss of E-cadherin is not a necessity for epithelial to mesenchymal transition in human breast cancer
Epithelial to mesenchymal transition (EMT) is typically defined by the acquisition of a spindle cell morphology in combination with loss of E-cadherin and upregulation of mesenchymal markers. However, by study...
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Article
Open AccessHigh TWIST1 mRNA expression is associated with poor prognosis in lymph node-negative and estrogen receptor-positive human breast cancer and is co-expressed with stromal as well as ECM related genes
The TWIST homolog 1 (TWIST1) is a transcription factor that induces epithelial to mesenchymal transition (EMT), a key process in metastasis. The purpose of this study was to investigate whether TWIST1 expression ...
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Article
Open AccessProteomics Pipeline for Biomarker Discovery of Laser Capture Microdissected Breast Cancer Tissue
Mass spectrometry (MS)-based label-free proteomics offers an unbiased approach to screen biomarkers related to disease progression and therapy-resistance of breast cancer on the global scale. However, multi-st...
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Correlation of breast cancer susceptibility loci with patient characteristics, metastasis-free survival, and mRNA expression of the nearest genes
To understand the biology of low-risk breast cancer alleles, and to investigate whether these loci also contribute to disease progression that was once established, we examined the association of SNPs tagging ...
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Article
Gene expression profiling assigns CHEK2 1100delC breast cancers to the luminal intrinsic subtypes
CHEK2 1100delC is a moderate-risk cancer susceptibility allele that confers a high breast cancer risk in a polygenic setting. Gene expression profiling of CHEK2 1100delC breast cancers may reveal...
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Article
Prognostic value of acquired uniparental disomy (aUPD) in primary breast cancer
Many studies have examined DNA copy number changes or gene expression profiling and their association with clinical outcomes in breast cancer. However, until now no study has investigated whether acquired unip...
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Article
Clinical value of circulating tumor cells in breast cancer
In a trial in patients with metastatic breast cancer, the prognostic value of the number of circulating tumor cells (CTCs) at baseline was independent of tumor subtype, except in patients with HER2-positive di...
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Article
Patterns and incidence of chromosomal instability and their prognostic relevance in breast cancer subtypes
One of the hallmarks of human solid tumors is chromosomal instability (CIN). We studied global patterns as well as individual levels of CIN and determined the prognostic relevance among breast cancer subtypes....
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Article
Detection of circulating tumor cells in breast cancer may improve through enrichment with anti-CD146
Most assays to detect circulating tumor cells (CTCs) rely on EpCAM expression on tumor cells. Recently, our group reported that in contrast to other molecular breast cancer subtypes, “normal-like” cell lines l...
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Article
MicroRNA-30c expression level is an independent predictor of clinical benefit of endocrine therapy in advanced estrogen receptor positive breast cancer
MicroRNAs (miRNAs) are small RNA molecules that modulate gene expression and which have been implicated in cancer. We evaluated whether five candidate predictive miRNAs, derived from a pilot study in which 249...
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Young age, increased tumor proliferation and FOXM1 expression predict early metastatic relapse only for endocrine-dependent breast cancers
It is unclear if earlier onset (<40 years) and greater proliferative capacity confer an equally poor prognosis to endocrine-dependent and endocrine-independent breast cancers. Available outcome (distant metast...