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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
2008-5-15
pubmed:abstractText
TSC1/hamartin is a tumor suppressor gene involved in the development of various malignancies, including bladder cancer. In vitro studies showed that hamartin controls cell proliferation partly by up-regulating p27 and 14-3-3sigma. This study was designed to explore the value of these biomarkers in predicting outcome in pTa/pT1 tumors and validate the regulation of p27 and 14-3-3sigma by hamartin in vivo using human bladder cancer tissue. A tissue microarray of 134 pTa and pT1 tumors was constructed, and sections were stained with hamartin, 14-3-3sigma, and p27 antibodies. In multiple Cox regression analysis, pTa/pT1 tumors with reduced or low expression of hamartin tended to have higher risk of progression (P = .030). High-grade tumors tended to be at higher risk of progression in comparison with low-grade tumors (P < .001). The combination of expression of these 3 biomarkers did not add predictive value regarding disease outcomes. Low hamartin expression and high tumor grade are independent factors in predicting faster pTa/pT1 tumor progression. In a subset of pTa/pT1 tumors, hamartin has a role in bladder carcinogenesis by positively regulating 14-3-3sigma and p27.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0002-9173
pubmed:author
pubmed:issnType
Print
pubmed:volume
129
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
918-23
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed-meshheading:18480009-14-3-3 Proteins, pubmed-meshheading:18480009-Adult, pubmed-meshheading:18480009-Aged, pubmed-meshheading:18480009-Aged, 80 and over, pubmed-meshheading:18480009-Carcinoma, Transitional Cell, pubmed-meshheading:18480009-Cyclin-Dependent Kinase Inhibitor p27, pubmed-meshheading:18480009-DNA, Neoplasm, pubmed-meshheading:18480009-Exonucleases, pubmed-meshheading:18480009-Female, pubmed-meshheading:18480009-Gene Expression Regulation, Neoplastic, pubmed-meshheading:18480009-Humans, pubmed-meshheading:18480009-Male, pubmed-meshheading:18480009-Middle Aged, pubmed-meshheading:18480009-Neoplasm Proteins, pubmed-meshheading:18480009-Neoplasm Recurrence, Local, pubmed-meshheading:18480009-Retrospective Studies, pubmed-meshheading:18480009-Tissue Array Analysis, pubmed-meshheading:18480009-Tumor Markers, Biological, pubmed-meshheading:18480009-Tumor Suppressor Proteins, pubmed-meshheading:18480009-Urinary Bladder Neoplasms, pubmed-meshheading:18480009-Urothelium
pubmed:year
2008
pubmed:articleTitle
Association of TSC1/hamartin, 14-3-3sigma, and p27 expression with tumor outcomes in patients with pTa/pT1 urothelial bladder carcinoma.
pubmed:affiliation
Department of Pathology and Laboratory Medicine, Roswell Park Cancer Institute, Buffalo, NY 14263, USA.
pubmed:publicationType
Journal Article