Linked Life Data

10777210

Source:http://linkedlifedata.com/resource/pubmed/id/10777210

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
14
pubmed:dateCreated
2000-6-8
pubmed:abstractText
The Epstein-Barr virus (EBV)-encoded latent membrane protein 1 (LMP1) has a significant role in initiating EBV-associated lymphoproliferative disease and EBV-related malignancies. In view of clinical features related to the type of EBV latency, LMP1 may influence invasiveness of EBV associated tumors categorized as types II and III as represented on nasopharyngeal carcinoma (NPC). To screen for genes associated with invasion of epithelial cells transformed by LMP1, Madin-Darby canine kidney (MDCK) epithelial cells were transformed by LMP1. Stable transfection of a LMP1 gene into MDCK cells induced morphological change from cobblestone to a long spindle-shape, reduced cell-cell adhesion and caused high cell motility. Parental MDCK cells, which form spherical cysts in three-dimensional collagen gel matrix, form branching tubules following exposure to hepatocyte growth factor (HGF). MDCK cells transformed by LMP1 showed invasive growth to form branching tubules into collagen gel without HGF-treatment. mRNA differential display and Northern hybridization identified plasminogen activator inhibitor-1 (PAI-1), urokinase type plasminogen activator (uPA) and ets1 as genes upregulated during transformation by LMP1. Expression of a dominant negative type of Etsl in LMP1-transformed cells downregulated uPA expression and cell motility. Deletion of LMP1 cytoplasmic carboxy-terminal activating region 1 (CTAR1) domain abolished transformation, but a deletion mutant lacking CTAR2 domain still retained transforming and uPA-inducing ability. Expression of Ets1 was immunolocalized in tumor cells of NPC tissue which frequently express LMP1. Taken together, it is suggested that LMP1 induces expression of Ets1 which may contribute to invasion of NPC by stimulating cell motility and uPA expression.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0950-9232
pubmed:author
pubmed:issnType
Print
pubmed:day
30
pubmed:volume
19
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1764-71
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed-meshheading:10777210-Animals, pubmed-meshheading:10777210-Cell Line, pubmed-meshheading:10777210-Cell Movement, pubmed-meshheading:10777210-Cell Transformation, Neoplastic, pubmed-meshheading:10777210-Dogs, pubmed-meshheading:10777210-Epithelial Cells, pubmed-meshheading:10777210-Gene Expression, pubmed-meshheading:10777210-Herpesvirus 4, Human, pubmed-meshheading:10777210-Nasopharyngeal Neoplasms, pubmed-meshheading:10777210-Neoplasm Invasiveness, pubmed-meshheading:10777210-Oncogene Proteins, Viral, pubmed-meshheading:10777210-Plasminogen Activator Inhibitor 1, pubmed-meshheading:10777210-Proto-Oncogene Protein c-ets-1, pubmed-meshheading:10777210-Proto-Oncogene Proteins, pubmed-meshheading:10777210-Proto-Oncogene Proteins c-ets, pubmed-meshheading:10777210-Transcription Factors, pubmed-meshheading:10777210-Urokinase-Type Plasminogen Activator, pubmed-meshheading:10777210-Viral Matrix Proteins
pubmed:year
2000
pubmed:articleTitle
Transformation of Madin-Darby canine kidney (MDCK) epithelial cells by Epstein-Barr virus latent membrane protein 1 (LMP1) induces expression of Ets1 and invasive growth.
pubmed:affiliation
Department of Molecular Virology and Oncology, Cancer Research Institute, Kanazawa University, Takara-machi, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't