Linked Life Data

8567114

Source:http://linkedlifedata.com/resource/pubmed/id/8567114

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1996-3-1
pubmed:abstractText
The importance of cell-associated plasminogen activation in tumor invasion and metastasis is becoming increasingly evident. To clarify the modulators of cell-associated plasminogen activation in malignant states, we have recently established an assay system utilizing endogenous plasminogen activators on the cell surface. In the present study using the assay system, we found that the conditioned medium from phorbol 12-myristate 13-acetate (PMA)-stimulated human lymphoid cell lines, HUT 78 and Raji, strongly enhanced plasminogen activator (PA) activity on the surface of human malignant tumor cell lines (WI-38 VAI3 2RA, A431, A549 and HT-1080). The enhancing effect was inhibited by the addition of actinomycin D. By gel filtration, the active substances in PMA-stimulated HUT 78- and Raji-conditioned media were eluted in similar fractions corresponding to molecular weights of 60 to 80 kDa. The active substance was heat-labile. The enhanced PA activities were completely inhibited by anti-urokinase-type plasminogen activator (uPA) IgG. Moreover, the active substance was found to increase in cell-bound uPA antigen. These findings suggest that a population of activated lymphocytes produces a plasminogen activator modulator that induces uPA on the surface of malignant tumor cells.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0020-7136
pubmed:author
pubmed:issnType
Print
pubmed:day
17
pubmed:volume
65
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
178-85
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1996
pubmed:articleTitle
Phorbol-ester-stimulated human lymphoid cell lines produce a plasminogen activator modulator inducing cell-bound urokinase-type plasminogen activator in malignant tumor cell lines.
pubmed:affiliation
Sagami Chemical Research Center, Kanagawa, Japan.
pubmed:publicationType
Journal Article