Linked Life Data

18818673

Source:http://linkedlifedata.com/resource/pubmed/id/18818673

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2009-2-11
pubmed:abstractText
Vascular endothelial growth factor (VEGF-A) is a critical player in cutaneous angiogenesis. However, the relative contribution of VEGF-A from different sources including epithelial and mesenchymal cells has not been fully characterized during skin repair and tumorigenesis. Moreover, the actual involvement of other vascular-specific acting molecules has remained elusive in part due to the masking and/or overlapping effects of VEGF-A. To shed light on these uncertainties we generated and characterized a clonal VEGF-null mouse keratinocyte cell line, through in vitro adenoviral gene transfer of Cre recombinase to VEGF-LoxP primary keratinocytes followed by repeated cell passaging under controlled conditions and cloning. In vitro and in vivo assays demonstrated that VEGF-null keratinocytes were nontumorigenic and expressed normal differentiation markers after calcium switch. Hras-induced tumorigenesis of immortalized VEGF-null keratinocytes upon subcutaneous injection was markedly reduced but not fully suppressed. However, the metastatic ability of Hras-transformed VEGF-null keratinocytes was abolished. These ex vivo approaches suggest the existence of VEGF-dependent and independent angiogenic stimuli in skin carcinogenesis. The VEGF-null mouse keratinocyte cell line arises as an important tool to assess the actual contribution of keratinocyte-derived VEGF with respect to other angiogenic factors in skin homeostasis and malignancy.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
1523-1747
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
129
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
730-41
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Complexity of VEGF responses in skin carcinogenesis revealed through ex vivo assays based on a VEGF-A null mouse keratinocyte cell line.
pubmed:affiliation
Cutaneous Disease Modelling Unit, Epithelial Biomedicine Division, Basic Research Department, CIEMAT-CIBERER, Madrid, Spain.
pubmed:publicationType
Journal Article