Abstract:
PURPOSE:The epithelial-mesenchymal transition (EMT) plays a key role in breast cancer progression and metastasis. Lipocalin 2 (LCN2) is involved in the regulation of EMT. The aim of this study was to investigate the clinicopathological significance of LCN2 expression in breast cancer. METHODS:The expression of LCN2 protein was immunohistochemically assessed in two well-characterised annotated cohorts of breast cancer (discovery cohort, n = 612; validation cohort, n = 1363). The relationship of LCN2 expression and subcellular location with the clinicopathological factors and outcomes of patients was analysed. RESULTS:Absent or reduced nuclear LCN2 expression was associated with features of aggressive behaviour, including high histological grade, high Nottingham Prognostic Index, high Ki67 labelling index, hormone receptor negativity and human epidermal growth factor receptor 2 positivity. The high cytoplasmic expression of LCN2 was correlated with lymph node positivity. The nuclear downregulation of LCN2 was correlated with the overexpression of EMT associated proteins (N-cadherin and Twist-related protein 2) and basal biomarkers (cytokeratin 5/6 and epidermal growth factor receptor). Unlike the cytoplasmic expression of LCN2, the loss of nuclear expression was a significant predictor of poor outcome. The combinatorial expression tumours with high cytoplasmic and low nuclear expression were associated with the worst prognosis. CONCLUSIONS:Tumour cell expression of LCN2 plays a role in breast cancer progression with loss of its nuclear expression which is associated with aggressive features and poor outcome. Further functional analysis is warranted to confirm the relationship between the subcellular localisation LCN2 and behaviour of breast cancer.
journal_name
Breast Cancer Res Treatjournal_title
Breast cancer research and treatmentauthors
Kurozumi S,Alsaeed S,Orah N,Miligy IM,Joseph C,Aljohani A,Toss MS,Fujii T,Shirabe K,Green AR,Aleskandarany MA,Rakha EAdoi
10.1007/s10549-019-05488-2subject
Has Abstractpub_date
2020-02-01 00:00:00pages
557-564issue
3eissn
0167-6806issn
1573-7217pii
10.1007/s10549-019-05488-2journal_volume
179pub_type
杂志文章abstract::We have previously shown that human breast carcinoma cells demonstrating an interconverted phenotype, where keratin (epithelial marker) and vimentin (mesenchymal marker) intermediate filaments are both expressed, have an increased ability to invade a basement membrane matrix in vitro. This increase in invasive potenti...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1023/a:1006188129423
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abstract::The present experiments were designed to evaluate in vivo the differential sensitivity of tumor cell subpopulations to hormone and polyamine manipulations using the hormone-responsive N-nitrosomethyl-urea (NMU)-induced rat mammary tumor. NMU tumor bearing rats were randomly assigned to control, ovariectomy, alpha-difl...
journal_title:Breast cancer research and treatment
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doi:10.1007/BF01806367
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abstract::The use of exogenous sex-steroids for hormonal contraception is important to the way of life of many modern women. The widespread use of hormonal contraceptives represents a unique opportunity to have a substantial positive impact on women's health. The observation that users of oral combination type contraceptives ha...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,评审
doi:10.1007/BF00666430
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abstract::Digital breast tomosynthesis (DBT) is emerging as the new standard of care for breast cancer screening based on improved cancer detection coupled with reductions in recall compared to screening with digital mammography (DM) alone. However, many prior studies lack follow-up data to assess false negatives examinations. ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-016-3695-1
更新日期:2016-02-01 00:00:00
abstract::The purpose of this article is to comprehensively summarize the associations between carotenoids and breast cancer and quantitatively estimate their dose-response relationships. We searched PubMed, Embase, and Cochrane databases (from January 1982 to 1 May 2011) and the references of the relevant articles in English w...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,meta分析
doi:10.1007/s10549-011-1723-8
更新日期:2012-01-01 00:00:00
abstract::Genome-Wide Association Studies have identified several loci associated with breast cancer (BC) in populations of different ethnic origins. One of the strongest associations was found in the FGFR2 gene, and MAP3K1 has been proposed as a low-penetrance BC risk factor. In this study, we evaluated the associations among ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-012-2359-z
更新日期:2013-01-01 00:00:00
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/BF01833517
更新日期:1992-01-01 00:00:00
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/BF01806938
更新日期:1982-01-01 00:00:00
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journal_title:Breast cancer research and treatment
pub_type: 临床试验,杂志文章,多中心研究
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更新日期:2002-09-01 00:00:00
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journal_title:Breast cancer research and treatment
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-009-0367-4
更新日期:2010-02-01 00:00:00
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/BF00666582
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-020-05960-4
更新日期:2020-10-16 00:00:00
abstract:BACKGROUND:We report a novel BRCA1 LGR, involving the complete duplication of exon 3, in an Italian patient with a strong family history of breast and ovarian cancer. Our purpose is to provide an effective characterization of this LGR using a combination of different methods able to establish the exact breakpoints of t...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-017-4275-8
更新日期:2017-07-01 00:00:00
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章,评审
doi:10.1023/a:1023081624133
更新日期:2003-04-01 00:00:00
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-005-9002-1
更新日期:2006-02-01 00:00:00
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1023/a:1006442622417
更新日期:2000-08-01 00:00:00
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-007-9640-6
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章
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journal_title:Breast cancer research and treatment
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journal_title:Breast cancer research and treatment
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journal_title:Breast cancer research and treatment
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/BF00694741
更新日期:1995-07-01 00:00:00
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章,评审
doi:10.1007/s10549-016-4028-0
更新日期:2017-01-01 00:00:00
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-007-9626-4
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-015-3625-7
更新日期:2015-12-01 00:00:00
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章
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更新日期:2014-06-01 00:00:00
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章,评审
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更新日期:1983-01-01 00:00:00