Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2005-4-5
pubmed:abstractText
It has been shown that the interaction between the potent angiogenic factor; the vascular endothelial growth factor (VEGF) and its receptors (VEGFR-1 and VEGFR-2), plays a pivotal role in tumor development, including hepatocellular carcinoma (HCC). However, the properties of the respective VEGF receptor in the signaling transduction pathway of VEGF-mediated effects in HCC have not been elucidated yet. The aim of this study was to examine the respective signaling pathway of two VEGFRs in the VEGF-mediated murine HCC development and angiogenesis. We examined the signaling cascades of VEGFR-1 and VEGFR-2 in the VEGF-mediated HCC development in combination with a retroviral tetracycline (tet)-regulated (Retro-Tet) gene expression system, which can manipulate the gene expression in vivo by providing tet in the drinking water, as well as VEGFR-1 and VEGFR-2 specific neutralizing monoclonal antibodies (R-1mAb and R-2mAb, respectively). Both R-1mAb and R-2mAb significantly suppressed the VEGF-mediated tumor growth associated with reduction of the tumoral neovascularization, and the combination treatment with both mAbs almost completely attenuated the tumor development and angiogenesis. The protein kinase-C (PKC) and MEK1/2 activities in the tumor were markedly attenuated by treatment with R-2mAb, whereas R-1mAb did not alter these activities. These results suggested that both VEGFR-1 and VEGFR-2 play important roles, and lie in the different signaling cascades by which VEGF augments HCC development and angiogenesis.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
1021-335X
pubmed:author
pubmed:issnType
Print
pubmed:volume
13
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
853-7
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed-meshheading:15809749-Animals, pubmed-meshheading:15809749-Antibodies, Monoclonal, pubmed-meshheading:15809749-Antigens, CD31, pubmed-meshheading:15809749-Carcinoma, Hepatocellular, pubmed-meshheading:15809749-Cell Division, pubmed-meshheading:15809749-Gene Expression Regulation, Neoplastic, pubmed-meshheading:15809749-Humans, pubmed-meshheading:15809749-Liver Neoplasms, pubmed-meshheading:15809749-Mice, pubmed-meshheading:15809749-Mice, Inbred BALB C, pubmed-meshheading:15809749-Mice, Transgenic, pubmed-meshheading:15809749-Neovascularization, Pathologic, pubmed-meshheading:15809749-Polymerase Chain Reaction, pubmed-meshheading:15809749-RNA, Messenger, pubmed-meshheading:15809749-Signal Transduction, pubmed-meshheading:15809749-Vascular Endothelial Growth Factor A, pubmed-meshheading:15809749-Vascular Endothelial Growth Factor Receptor-1, pubmed-meshheading:15809749-Vascular Endothelial Growth Factor Receptor-2
pubmed:year
2005
pubmed:articleTitle
Different cascades in the signaling pathway of two vascular endothelial growth factor (VEGF) receptors for the VEGF-mediated murine hepatocellular carcinoma development.
pubmed:affiliation
The Third Department of Internal Medicine, Nara Medical University, Shijo-cho 840, Kashihara, Nara 634-8522, Japan. yoshijih@naramed-u.ac.jp
pubmed:publicationType
Journal Article