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uPAR enhances malignant potential of triple-negative breast cancer by directly interacting with uPA and IGF1R

Overview of attention for article published in BMC Cancer, August 2016
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Title
uPAR enhances malignant potential of triple-negative breast cancer by directly interacting with uPA and IGF1R
Published in
BMC Cancer, August 2016
DOI 10.1186/s12885-016-2663-9
Pubmed ID
Authors

Michaela C. Huber, Rebecca Mall, Herbert Braselmann, Annette Feuchtinger, Sara Molatore, Katrin Lindner, Axel Walch, Eva Gross, Manfred Schmitt, Natalie Falkenberg, Michaela Aubele

Abstract

Due to lack of a targeted therapy for the triple-negative breast cancer (TNBC) patients, it is important to explore this aggressive breast cancer type in more detail and to establish novel therapeutic approaches. TNBC is defined negative for the protein expression of oestrogen receptor (ER), progesterone receptor (PR) and human epidermal growth factor receptor 2 (HER2). One prominent feature of this cancer type is the frequent overexpression of major components of the urokinase-type plasminogen activator system (uPAS) including uPA, its receptor uPAR and the inhibitor PAI-1, which may be valuable as therapeutic targets. Direct interactions of uPAR with interactors were demonstrated by immunoprecipitations and proximity ligation assays. For stable knockdowns of target proteins, lentiviral vectors were used and the effects were analysed by immunoblottings and using in vitro cell viability, migration and invasion assays. Immunohistochemical and statistical analyses of biomarkers and clinical parameters were conducted in a TNBC cohort (n = 174). Direct tumour-promoting interactions of uPAR with uPA and the insulin-like growth factor receptor 1 (IGF1R) were shown in TNBC cells and these interactions were significantly reduced (p = 0.001) when uPAR was downregulated. The combined knockdown of uPAR and uPA or IGF1R additively and significantly reduced cell viability, migration and invasion of the model cell lines. In TNBC tissue, the complexes formed by uPAR with uPA or with IGF1R significantly correlated with the histological grade (p = 0.0019) as well as with cathepsin B and D (p ≤ 0.0001) that are implicated in cell invasion and metastasis. Our outcomes show that not only overexpressed biomarkers promote tumourigenesis, but rather their interactions further potentiate tumour progression. This study emphasises the potential of combined approaches targeting uPAR and its interactors with regard to an improved therapy of TNBC.

Twitter Demographics

The data shown below were collected from the profile of 1 tweeter who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 30 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 30 100%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 9 30%
Student > Master 5 17%
Student > Postgraduate 3 10%
Student > Bachelor 3 10%
Researcher 3 10%
Other 3 10%
Unknown 4 13%
Readers by discipline Count As %
Biochemistry, Genetics and Molecular Biology 9 30%
Medicine and Dentistry 7 23%
Agricultural and Biological Sciences 4 13%
Chemistry 2 7%
Immunology and Microbiology 2 7%
Other 1 3%
Unknown 5 17%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 10 August 2016.
All research outputs
#7,089,877
of 8,192,854 outputs
Outputs from BMC Cancer
#2,802
of 3,461 outputs
Outputs of similar age
#217,356
of 257,284 outputs
Outputs of similar age from BMC Cancer
#186
of 261 outputs
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So far Altmetric has tracked 3,461 research outputs from this source. They receive a mean Attention Score of 3.6. This one is in the 1st percentile – i.e., 1% of its peers scored the same or lower than it.
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We're also able to compare this research output to 261 others from the same source and published within six weeks on either side of this one. This one is in the 1st percentile – i.e., 1% of its contemporaries scored the same or lower than it.