Abstract:
:The Forkhead/Fox transcription factor Foxc2 is a critical regulator of vascular development. However, the role of Foxc2 in pathological angiogenesis in cancer remains unknown. Here we show that FoxC2 is highly expressed in human breast and colonic tumors and in the tumor endothelium in human and mouse melanomas. Using the B16 melanoma tumor model, we investigated the function of Foxc2 in tumor angiogenesis. After subcutaneous injection of B16 melanoma cells, primary tumor growth as well as neovascularization was markedly reduced in mice lacking one copy of the Foxc2 gene (Foxc2+/-). Consistently, expression levels of several angiogenic factors, including vascular endothelial growth factor (Vegf), matrix metallopeptidase 2 (Mmp2), and platelet-derived growth factor-B (Pdgfb), were significantly decreased in B16 tumors grown in Foxc2+/- mice, and tumor blood vessels formed in Foxc2+/- mice showed reduced coverage of mural cells and endothelial cell apoptosis. In addition, the tumor tissue in Foxc2+/- mice had an accumulation of necrotic cells. Taken together, these findings demonstrate that haplodeficiency of Foxc2 results in impaired formation of tumor blood vessels as well as reduced tumor growth and thereby provide evidence that Foxc2 is critical for tumor development and angiogenesis.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Sano H,Leboeuf JP,Novitskiy SV,Seo S,Zaja-Milatovic S,Dikov MM,Kume Tdoi
10.1016/j.bbrc.2010.01.015subject
Has Abstractpub_date
2010-02-05 00:00:00pages
201-6issue
2eissn
0006-291Xissn
1090-2104pii
S0006-291X(10)00037-9journal_volume
392pub_type
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