Placental growth factor is a survival factor for tumor endothelial cells and macrophages.
Placental growth factor is a survival factor for tumor endothelial cells and macrophages.
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发表时间:
2002-05
期刊:
影响因子:
11.2
通讯作者:
A. Adini;T. Kornaga;Farshid Firoozbakht;L. Benjamin
中科院分区:
文献类型:
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作者:
A. Adini;T. Kornaga;Farshid Firoozbakht;L. Benjamin
The vascular endothelial growth factor (VEGF)-related factor, placental growth factor (PlGF),has been shown recently to play an important role in pathological VEGF-driven angiogenesis. In this study, we examine the effects of mPlGF/PlGF-2 overexpression in tumors grown from glioma cells containing a tetracycline-regulated mPlGF cDNA. Overexpression of mPlGF leads to increased tumor growth and vascular survival. When tetracycline is used to abruptly withdraw mPlGF overexpression, we see increased apoptosis in both vascular cells and macrophages. In addition, PlGF-2 induces survival gene expression and inhibits apoptosis in vitro. Thus, we propose that PlGF-2 contributes to tumor angiogenesis by providing increased survival function to endothelial cells and macrophages.