Linked Life Data

17686575

Source:http://linkedlifedata.com/resource/pubmed/id/17686575

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2007-10-1
pubmed:abstractText
Tumour associated neovascularisation is a complex interplay between inhibitory and stimulatory angiogenic factors. Despite intense research in this field, little is known about the interaction between endothelial and chemoresistant cancer cells. For this purpose, we assessed the impact of cellular supernatants of the primary adenocarcinoma cell line CCL228, its lymph node metastasis CCL227, and four subclones resistant to different levels of 5-fluorouracil on the growth of microvascular and macrovascular endothelial cells. The growth of endothelial cells in vitro was affected to a moderate degree by supernatants from colon cancer cell lines. This effect was independent of the degree of chemoresistance. The stimulation of endothelial cells by the growth factors VEGF, bFGF, and PD-ECGF in the presence of supernatants from cancer cell lines was generally higher in macrovascular endothelial cells when compared with microvascular cells. The secretion of VEGF from colon cancer cells in vitro was inversely related to the degree of chemoresistance with the low chemoresistance phenotype producing VEGF 8.7-fold higher than the high resistance subclone. With a maximal secretion of 1500 pg VEGF/ml cell supernatant, the concentration necessary to directly stimulate the growth of endothelial cells was not achieved. In conclusion, chemoresistance affects the interaction between colon cancer cells and endothelial cells dependant on the endothelial cell type. Although the level of chemoresistance has a profound impact on the production of VEGF by cancer cells with low, intermediate or high resistance, it does not differentially affect growth stimulation or inhibition of endothelial cells in vitro.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0304-3835
pubmed:author
pubmed:issnType
Print
pubmed:day
8
pubmed:volume
257
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
73-8
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Angiogenic effect of naive and 5-fluorouracil resistant colon carcinoma on endothelial cells in vitro.
pubmed:affiliation
Department of Medicine I and Cancer Center, Clinical Division of Oncology, Medical University of Vienna, Waehringer Guertel 18-20, A-1090 Vienna, Austria.
pubmed:publicationType
Journal Article, In Vitro