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Prognostic role of HuR in hereditary breast cancer
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2007 (Engelska)Ingår i: Clinical Cancer Research, ISSN 1078-0432, E-ISSN 1557-3265, Vol. 13, nr 23, s. 6959-6963Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Purpose: HuR is an mRNA-binding protein that enhances the stability of certain transcripts and can regulate their translation. Elevated cytoplasmic expression of HuR protein has been linked to carcinogenesis and is associated with reduced survival in breast, ovarian, and gastric adenocarcinomas. Experimental Design: Here, we have explored the relevance of HuR in familial breast cancer. Tumor samples were collected from patients with identified BRCA1 (n = 51) or BRCA2 (n = 47) mutations or familial non-BRCA1/2 cases (n = 525), and analyzed by immunohistochemistry. Results: Among familial non-BRCAI/2 breast cancer patients, cytoplasmic HuR protein expression was present in 39.4% of the cases and was associated with estrogen receptor negativity, progesterone receptor negativity, p53 positivity, high tumor grade, and ductal type of the tumor. In multivariate analysis, cytoplasmic HuR expression was an independent marker of reduced survival in the non-BRCAI/2 group along with tumor size >2 cm, lymph node metastasis, and high histologic grade. In patients with BRCA1 or BRCA2 mutations, cytoplasmic HuR expression was more frequent (62.7% for BRCA1 and 61.7% for BRCA2) than in the non-BRCA1/ 2 group, but in BRCA -mutated subgroups cytoplasmic HuR expression did not associate with survival. Conclusions: Our results show that HuR is an important prognostic factor in familial breast cancer patients and may contribute to carcinogenesis in this disease.

Ort, förlag, år, upplaga, sidor
2007. Vol. 13, nr 23, s. 6959-6963
Nyckelord [en]
Adult, Aged, Aged; 80 and over, Antigens; Surface/*biosynthesis/genetics, Breast Neoplasms/*genetics/*metabolism/pathology, Female, Genes; BRCA1, Genes; BRCA2, Humans, Kaplan-Meiers Estimate, Middle Aged, Prognosis, RNA-Binding Proteins/*biosynthesis/genetics
Nationell ämneskategori
Medicin och hälsovetenskap
Identifikatorer
URN: urn:nbn:se:uu:diva-17428DOI: 10.1158/1078-0432.CCR-07-1432PubMedID: 18056170OAI: oai:DiVA.org:uu-17428DiVA, id: diva2:45199
Tillgänglig från: 2008-06-24 Skapad: 2008-06-24 Senast uppdaterad: 2017-12-08Bibliografiskt granskad

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Förlagets fulltextPubMedhttp://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Retrieve&list_uids=18056170&dopt=Citation

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Blomqvist, Carl

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Institutionen för onkologi, radiologi och klinisk immunologi
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