ArticleThe American journal of pathology2000
Down-regulation of beta(1C) integrin in breast carcinomas correlates with high proliferative fraction, high histological grade, and larger size.
Article in The American journal of pathology, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 31 citations in OpenAlex.
- Fyn/heterogeneous nuclear ribonucleoprotein E1 signaling regulates pancreatic cancer metastasis by affecting the alternative splicing of integrin β1.International journal of oncology · 2017Article
- Analysis of conserved residues in the betapat-3 cytoplasmic tail reveals important functions of integrin in multiple tissues.Developmental dynamics : an official publication of the American Association of Anatomists · 2010Article
- Selective modulation of type 1 insulin-like growth factor receptor signaling and functions by beta1 integrins.The Journal of cell biology · 2004Article
- beta 1C Integrin expression in human endometrial proliferative diseases.The American journal of pathology · 2003Article
- Article
- Regulation of mRNA and protein levels of beta1 integrin variants in human prostate carcinoma.The American journal of pathology · 2000Article
- Differential role of beta(1C) and beta(1A) integrin cytoplasmic variants in modulating focal adhesion kinase, protein kinase B/AKT, and Ras/Mitogen-activated protein kinase pathways.Molecular biology of the cell · 2000Article
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Authors and funding
6 authors at 3 institutions in 2 countries.
Funding
Abstract
beta(1C) integrin is an unspliced form of the integrin beta(1) subfamily, which has been shown to inhibit cell proliferation in vitro. Using an affinity-purified rabbit antibody, we have investigated 283 previously untreated breast carcinomas, with the aim of ascertaining the actual prevalence of beta(1C) expression in these tumors and of defining its pathological correlates. Immunoblotting and reverse transcriptase-polymerase chain reaction experiments have also been performed in selected cases, to confirm the immunocytochemical findings. Overall, beta(1C) immunoreactivity was down-regulated (ie, expressed in < 50% of the neoplastic cells) in 114 cases (40.3%). Down-regulation of beta(1C) expression in breast carcinomas correlated significantly with the tumor grade, the proliferative fraction (as evaluated by Ki-67 immunostaining with the MIB-1 monoclonal antibody), the estrogen and progesterone receptor status, and the tumor size (pT classification) and marginally with the node status. In a multivariate analysis with all available measures fitted simultaneously, tumor grade (P = 0.004), Ki-67 immunolabeling (P = 0.01), and pT categories (P = 0.04) were significantly associated with beta(1C) immunoreactivity. Although the short follow-up time (2-3 years) of the current series of patients does not allow the performance of survival analyses, the correlation of beta(1C) expression with tumor size, grade, and proliferative fraction and its alleged role as an upstream regulator of p27(kip1) make this integrin variant a likely novel prognostic parameter for invasive carcinomas of the breast.
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