Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2009-9-2
pubmed:abstractText
Cancer stem cells are a limited population of tumor cells that are thought to reconstitute whole tumors. The Hoechst dye exclusion assay revealed that tumors are composed of both a main population and a side population of cells, which are rich in cancer stem cells. NR0B1 is an orphan nuclear receptor that is expressed to a greater extent in the side population, as compared with the main population, of a lung adenocarcinoma cell line. In this study, we investigated the role of NR0B1 in lung adenocarcinoma cells. Reduction of NR0B1 expression levels in lung adenocarcinoma cell lines resulted in vulnerability to anti-cancer drugs and decreased abilities for invasion, in vitro colony formation, and tumorigenicity in non-obese diabetic/severe compromised immunodeficient mice. When 193 cases of lung adenocarcinoma were immunohistochemically examined, higher levels of NR0B1 expression correlated with higher rates of lymph node metastasis and recurrence. Multivariate analysis revealed high NR0B1 expression levels, stage of the disease, and size of tumor to be independent unfavorable prognostic factors for overall and disease-free survival rates. In clinical samples, NR0B1 expression levels inversely correlated to the proportion of methylated CpG sequences around the transcription initiation site of the NR0B1 gene, suggesting the epigenetic control of NR0B1 transcription in lung adenocarcinoma. In conclusion, NR0B1 might play a role in the malignant potential of lung adenocarcinoma.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
1525-2191
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
175
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1235-45
pubmed:dateRevised
2010-9-2
pubmed:meshHeading
pubmed-meshheading:19644015-Adenocarcinoma, pubmed-meshheading:19644015-Animals, pubmed-meshheading:19644015-Cell Line, Tumor, pubmed-meshheading:19644015-DAX-1 Orphan Nuclear Receptor, pubmed-meshheading:19644015-Disease-Free Survival, pubmed-meshheading:19644015-Female, pubmed-meshheading:19644015-Gene Expression Regulation, Neoplastic, pubmed-meshheading:19644015-Humans, pubmed-meshheading:19644015-Lung Neoplasms, pubmed-meshheading:19644015-Lymphatic Metastasis, pubmed-meshheading:19644015-Methylation, pubmed-meshheading:19644015-Mice, pubmed-meshheading:19644015-Mice, Inbred NOD, pubmed-meshheading:19644015-Mice, SCID, pubmed-meshheading:19644015-Neoplasm Invasiveness, pubmed-meshheading:19644015-Neoplasm Transplantation, pubmed-meshheading:19644015-Prognosis, pubmed-meshheading:19644015-Promoter Regions, Genetic, pubmed-meshheading:19644015-Recurrence, pubmed-meshheading:19644015-Transcription, Genetic, pubmed-meshheading:19644015-Tumor Markers, Biological
pubmed:year
2009
pubmed:articleTitle
Tumorigenic role of orphan nuclear receptor NR0B1 in lung adenocarcinoma.
pubmed:affiliation
Department of Pathology, Graduate School of Medicine, Osaka University, Yamada-oka 2-2, Suita, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't