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cainiaodui

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An anti-DLL4 antibody, OMP-21M18, was found to have anti-tumor activity in patient-derived xenograft models independent of any effect on angiogenesis .
This antibody does not cross-react with murine DLL4 and therefore has no effect on the vasculature in murine xenografts. The combination of blocking DLL4 in tumor and vascular cells was shown to have an additive effect. Importantly, inhibition of DLL4 not only reduced tumor growth but also reduced tumor initiating cells as shown by serial transplantation experiments
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yili_90

金虫 (正式写手)

【答案】应助回帖

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爱与雨下: 金币+1 2013-10-14 19:57:52
研究发现,抗DLL4的抗体,即OMP-21M18在不受血管生成影响的患者来源异种移植模型中有抗肿瘤活性。
这个抗体与小鼠DLL4不发生交叉反应,所以在做小鼠异种移植时对脉管没有影响。在同时阻断肿瘤中的DLL4和血管内皮细胞时会有附加反应。更重要的是,DLL4的抑制不但会减缓肿瘤的生长,也会减慢系列移植实验中提到的肿瘤启动细胞。
plummet
2楼2013-10-13 20:20:00
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xux730

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cainiaodui: 金币+5, 翻译EPI+1 2013-10-14 23:52:44
一种名为OMP-21M18的抗DLL4抗体被发现在患者来源的异种移植模型中具有抗肿瘤活性,这种活性与该抗体对对血管生成的任何影响无关。
该抗体与鼠源DLL4没有交叉反应,因此,对小鼠异种移植物的血管没有影响。在肿瘤和血管细胞中联合阻断DLL4显示出叠加效应。更重要的是,在一系列的移植实验中,抑制DLL4不仅降低了肿瘤的生长,还减少了肿瘤起始细胞数。
3楼2013-10-14 12:33:37
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