Linked Life Data

8764134

Source:http://linkedlifedata.com/resource/pubmed/id/8764134

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
14
pubmed:dateCreated
1996-9-20
pubmed:abstractText
Tumor progression to the stage of metastasis may result in part from the selection of certain primary tumor cell clones which are phenotypically competent for survival, invasion, and growth at secondary sites. Selection for traits such as loss of growth inhibitory responses, acquisition of increased adhesiveness, increased local immunosuppression, and enhanced motility and collagenase activities likely contribute to cancer progression and may be regulated through the action of growth factors. The transforming growth factors (TGF-beta) family of growth factors has often been associated with these traits and tumor progression; therefore, elimination or subversion of TGF-beta-responsive pathways should be considered as a mechanistic framework for metastatic events. In this report, we have compared growth and extracellular matrix responses to TGF-beta in six metastatic and six primary tumor-derived cell lines in a mouse model of prostate cancer. We have found that tumor cell lines derived from focal pulmonary metastasis secreted relatively greater quantities of total TGF-betas, lost most or all TGF-beta1 growth inhibition, but responded to TGF-beta1 through induction of the type IV collagenase matrix metalloproteinase-9, whereas cell lines derived from tumors which proliferated at the primary site retained the growth inhibition but lacked collagenase activity. Synthesis of another extracellular matrix protein, plasminogen activator inhibitor 1, was stimulated by TGF-beta1 in both primary as well as metastatic tumors. These results suggest that acquisition of differential responses to the TGF-beta family could result in phenotypic traits which facilitate tumor metastasis from certain primary site clones.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0008-5472
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
56
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
3359-65
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed-meshheading:8764134-Animals, pubmed-meshheading:8764134-Cell Division, pubmed-meshheading:8764134-Collagenases, pubmed-meshheading:8764134-Enzyme Induction, pubmed-meshheading:8764134-Gelatinases, pubmed-meshheading:8764134-Genes, myc, pubmed-meshheading:8764134-Genes, p53, pubmed-meshheading:8764134-Genes, ras, pubmed-meshheading:8764134-Lung Neoplasms, pubmed-meshheading:8764134-Male, pubmed-meshheading:8764134-Matrix Metalloproteinase 2, pubmed-meshheading:8764134-Matrix Metalloproteinase 9, pubmed-meshheading:8764134-Metalloendopeptidases, pubmed-meshheading:8764134-Mice, pubmed-meshheading:8764134-Mice, Knockout, pubmed-meshheading:8764134-Molecular Weight, pubmed-meshheading:8764134-Neoplasm Metastasis, pubmed-meshheading:8764134-Plasminogen Activator Inhibitor 1, pubmed-meshheading:8764134-Prostatic Neoplasms, pubmed-meshheading:8764134-Receptors, Transforming Growth Factor beta, pubmed-meshheading:8764134-Transforming Growth Factor beta, pubmed-meshheading:8764134-Tumor Cells, Cultured
pubmed:year
1996
pubmed:articleTitle
Transforming growth factor beta1 stimulates contrasting responses in metastatic versus primary mouse prostate cancer-derived cell lines in vitro.
pubmed:affiliation
Urology Research Laboratory, Veterans Affairs Medical Center, Baylor College of Medicine, Houston, Texas 77030, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.