Need Help?

METABRIC miRNA landscape

MicroRNAs (miRNAs) are key players in cancer pathogenesis1. They display differential expression across breast cancer subtypes, and play oncogenic and tumor-suppressive roles2-6. A systematic study of the global miRNA landscape in breast cancer and the factors shaping it has not been undertaken. Here we report the results of profiling miRNA expression in 1,302 breast tumors with detailed clinical annotation and long-term follow-up, and for which matching genomic and mRNA expression data were available7. This provides a comprehensive view of the quantity, distribution and variation of the miRNA population and dissects how much genomic, transcriptional and post-transcriptional events contribute to miRNA expression architecture. The key clinical parameters and cellular pathways related to the miRNA landscape are identified, exemplified by context-dependent interaction with cell adhesion and Wnt signaling. Strikingly, in breast cancer miRNAs appear to act as modulators of mRNA-mRNA interactions rather than molecular switches. We demonstrate an important modulatory role for miRNAs in the biology of breast tumors devoid of somatic copy number aberrations, a common subtype where immune response is prominent. Remarkably, prognostic miRNA signatures derived in this subtype are consistently prognostic across several other subtypes and validate in external cohorts. These findings represent a new framework to study the biology of miRNA in human cancer.

Click on a Dataset ID in the table below to learn more, and to find out who to contact about access to these data

Dataset ID Description Technology Samples
EGAD00010000434 Illumina HT 12 1302
EGAD00010000436 Illumina HT 12 1302
EGAD00010000438 Agilent ncRNA 60k 1480
EGAD00010000440 Affymetrix_SNP6_raw 1302
EGAD00010000442 Affymetrix_SNP6_raw 1302
EGAD00010000444 Agilent ncRNA 60k 1480
Publications Citations
High-throughput screens identify microRNAs essential for HER2 positive breast cancer cell growth.
Mol Oncol 8: 2014 93-104
The breast cancer oncogene EMSY represses transcription of antimetastatic microRNA miR-31.
Mol Cell 53: 2014 806-818
MicroRNA-135b regulates ERα, AR and HIF1AN and affects breast and prostate cancer cell growth.
Mol Oncol 9: 2015 1287-1300
MiR-148a functions to suppress metastasis and serves as a prognostic indicator in triple-negative breast cancer.
Oncotarget 7: 2016 20381-20394
The miR-644a/CTBP1/p53 axis suppresses drug resistance by simultaneous inhibition of cell survival and epithelial-mesenchymal transition in breast cancer.
Oncotarget 7: 2016 49859-49877
Basal-like breast cancer: molecular profiles, clinical features and survival outcomes.
BMC Med Genomics 10: 2017 19
Dysregulation of Blimp1 transcriptional repressor unleashes p130Cas/ErbB2 breast cancer invasion.
Sci Rep 7: 2017 1145
microRNA-143/145 loss induces Ras signaling to promote aggressive Pten-deficient basal-like breast cancer.
JCI Insight 2: 2017 93313
Identification of CDC25 as a Common Therapeutic Target for Triple-Negative Breast Cancer.
Cell Rep 23: 2018 112-126
SIK2 attenuates proliferation and survival of breast cancer cells with simultaneous perturbation of MAPK and PI3K/Akt pathways.
Oncotarget 9: 2018 21876-21892
Levels of miR-126 and miR-218 are elevated in ductal carcinoma <i>in situ</i> (DCIS) and inhibit malignant potential of DCIS derived cells.
Oncotarget 9: 2018 23543-23553
Screen for MicroRNA and Drug Interactions in Breast Cancer Cell Lines Points to miR-126 as a Modulator of CDK4/6 and PIK3CA Inhibitors.
Front Genet 9: 2018 174
Pan-cancer characterisation of microRNA across cancer hallmarks reveals microRNA-mediated downregulation of tumour suppressors.
Nat Commun 9: 2018 5228
Cholinergic Receptor Nicotinic Alpha 5 (CHRNA5) RNAi is associated with cell cycle inhibition, apoptosis, DNA damage response and drug sensitivity in breast cancer.
PLoS One 13: 2018 e0208982
A subgroup of microRNAs defines PTEN-deficient, triple-negative breast cancer patients with poorest prognosis and alterations in RB1, MYC, and Wnt signaling.
Breast Cancer Res 21: 2019 18
Large miRNA survival analysis reveals a prognostic four-biomarker signature for triple negative breast cancer.
Genet Mol Biol 43: 2020 e20180269
Molecular stratification within triple-negative breast cancer subtypes.
Sci Rep 9: 2019 19107
Targeting lysyl oxidase (LOX) overcomes chemotherapy resistance in triple negative breast cancer.
Nat Commun 11: 2020 2416
Association of germline variation with the survival of women with <i>BRCA1/2</i> pathogenic variants and breast cancer.
NPJ Breast Cancer 6: 2020 44
MiR-100 is a predictor of endocrine responsiveness and prognosis in patients with operable luminal breast cancer.
ESMO Open 5: 2020 e000937
Aberrant transcriptional and post-transcriptional regulation of SPAG5, a YAP-TAZ-TEAD downstream effector, fuels breast cancer cell proliferation.
Cell Death Differ 28: 2021 1493-1511
Construction of a MicroRNA-Based Nomogram for Prediction of Lung Metastasis in Breast Cancer Patients.
Front Genet 11: 2020 580138
Uncovering the roles of microRNAs/lncRNAs in characterising breast cancer subtypes and prognosis.
BMC Bioinformatics 22: 2021 300
High miR-30 Expression Associates with Improved Breast Cancer Patient Survival and Treatment Outcome.
Cancers (Basel) 13: 2021 2907
Accurate prediction of breast cancer survival through coherent voting networks with gene expression profiling.
Sci Rep 11: 2021 14645
Hyperleptinemia in obese state renders luminal breast cancers refractory to tamoxifen by coordinating a crosstalk between Med1, miR205 and ErbB.
NPJ Breast Cancer 7: 2021 105
Hsa-miR-21-3p associates with breast cancer patient survival and targets genes in tumor suppressive pathways.
PLoS One 16: 2021 e0260327
miR-101-5p Acts as a Tumor Suppressor in HER2-Positive Breast Cancer Cells and Improves Targeted Therapy.
Breast Cancer (Dove Med Press) 14: 2022 25-39
Multiomics Topic Modeling for Breast Cancer Classification.
Cancers (Basel) 14: 2022 1150
5'isomiR-183-5p|+2 elicits tumor suppressor activity in a negative feedback loop with E2F1.
J Exp Clin Cancer Res 41: 2022 190
miR-489 Confines Uncontrolled Estrogen Signaling through a Negative Feedback Mechanism and Regulates Tamoxifen Resistance in Breast Cancer.
Int J Mol Sci 23: 2022 8086
Cis-regulatory mutations associate with transcriptional and post-transcriptional deregulation of gene regulatory programs in cancers.
Nucleic Acids Res 50: 2022 12131-12148
Targeting TACC3 represents a novel vulnerability in highly aggressive breast cancers with centrosome amplification.
Cell Death Differ 30: 2023 1305-1319
spongEffects: ceRNA modules offer patient-specific insights into the miRNA regulatory landscape.
Bioinformatics 39: 2023 btad276
CDK4/6 inhibitors and the pRB-E2F1 axis suppress PVR and PD-L1 expression in triple-negative breast cancer.
Oncogenesis 12: 2023 29
In Silico Identification of a BRCA1:miR-29:DNMT3 Axis Involved in the Control of Hormone Receptors in BRCA1-Associated Breast Cancers.
Int J Mol Sci 24: 2023 9916