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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DOI:
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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
A. Adini;T. Kornaga;Farshid Firoozbakht;L. Benjamin
中科院分区:
医学1区
文献类型:
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作者:
A. Adini;T. Kornaga;Farshid Firoozbakht;L. Benjamin

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血管内皮生长因子(VEGF)相关因子胎盘生长因子(PlGF)最近被证明在病理性 VEGF 驱动的血管生成中发挥重要作用。在这项研究中,我们研究了 mPlGF/PlGF-2 过表达对含有四环素调节的 mPlGF cDNA 的神经胶质瘤细胞生长的肿瘤的影响。 mPlGF 的过度表达导致肿瘤生长和血管存活增加。当使用四环素突然撤销 mPlGF 过度表达时,我们发现血管细胞和巨噬细胞的凋亡增加。此外,PlGF-2 在体外诱导存活基因表达并抑制细胞凋亡。因此,我们提出PlGF-2通过为内皮细胞和巨噬细胞提供增加的生存功能来促进肿瘤血管生成。
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.