TEM8/ANTXR1 blockade inhibits pathological angiogenesis and potentiates tumoricidal responses against multiple cancer types.

TEM8/ANTXR1 blockade inhibits pathological angiogenesis and potentiates tumoricidal responses against multiple cancer types.
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DOI:
10.1016/j.ccr.2012.01.004
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发表时间:
2012-02-14
期刊:
影响因子:
50.3
通讯作者:
St Croix B
St Croix B
中科院分区:
医学1区
文献类型:
--
作者:
Chaudhary A;Hilton MB;Seaman S;Haines DC;Stevenson S;Lemotte PK;Tschantz WR;Zhang XM;Saha S;Fleming T;St Croix B

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目前用于治疗癌症的抗血管生成剂仅部分抑制新血管形成并引起正常组织毒性,从而激发了对鉴定对病理性血管生成更具选择性的治疗剂的需求。肿瘤内皮标志物8(TEM8),也称为炭疽毒素受体1(ANTXR1),是一种高度保守的细胞表面蛋白,在肿瘤浸润血管系统上过表达。在这里,我们表明Tem8的遗传破坏导致不同来源的人类肿瘤异种移植物生长受损,包括黑素瘤、乳腺癌、结肠癌和肺癌。此外,针对TEM 8细胞外结构域开发的抗体阻断炭疽中毒,抑制肿瘤诱导的血管生成,显示出广泛的抗肿瘤活性,并增强了临床批准的抗癌剂的活性而没有增加毒性。因此,TEM8靶向可以允许选择性抑制病理性血管生成。
Current anti-angiogenic agents used to treat cancer only partially inhibit neovascularization and cause normal tissue toxicities, fueling the need to identify therapeutic agents that are more selective for pathological angiogenesis. Tumor Endothelial Marker 8 (TEM8), also known as anthrax toxin receptor 1 (ANTXR1), is a highly conserved cell-surface protein overexpressed on tumor-infiltrating vasculature. Here, we show that genetic disruption of Tem8 results in impaired growth of human tumor xenografts of diverse origin including melanoma, breast, colon, and lung cancer. Furthermore, antibodies developed against the TEM8 extracellular domain blocked anthrax intoxication, inhibited tumor-induced angiogenesis, displayed broad anti-tumor activity and augmented the activity of clinically approved anti-cancer agents without added toxicity. Thus, TEM8 targeting may allow selective inhibition of pathological angiogenesis.
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