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首页> 外文期刊>Radiotherapy and oncology: Journal of the European Society for Therapeutic Radiology and Oncology >Triple angiokinase inhibition, tumour hypoxia and radiation response of FaDu human squamous cell carcinomas.
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Triple angiokinase inhibition, tumour hypoxia and radiation response of FaDu human squamous cell carcinomas.

机译:FaDu人鳞状细胞癌的三重血管激酶抑制,肿瘤缺氧和放射反应。

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摘要

BACKGROUND AND PURPOSE: To test the effect of BIBF 1120, a novel small molecule inhibitor of multiple angiogenic receptor tyrosine kinases, on the hypoxia and radiation response of tumours. MATERIALS AND METHODS: Poorly differentiated human squamous cell carcinoma FaDu growing in nude mice was treated with BIBF 1120 and investigated by functional histology. To test the effect of BIBF 1120 on the radiobiological hypoxic fraction (rHF), the number and intrinsic radiation sensitivity of tumour stem cells and the outcome after fractionated irradiation, a series of local tumour control assays were performed. RESULTS: BIBF 1120 significantly reduced the vessel area, vessel area with a perfusion signal and tumour growth rate but did not affect tumour hypoxia or the number and intrinsic radiation sensitivity of tumour stem cells. Concurrent BIBF 1120 had no effect on local tumour control after fractionated irradiation. CONCLUSION: Triple angiokinase inhibition resulted in a clear-cut decrease of angiogenesis, vessel area with a perfusion signal and tumour growth but did not change tumour hypoxia or radiation response of tumour stem cells. Further experiments into mechanisms of interaction between anti-angiogenic strategies and irradiation appear to be necessary to better define and exploit the potential of this strategy to improve local tumour control after fractionated radiotherapy.
机译:背景与目的:为了测试BIBF 1120(一种具有多重血管生成受体酪氨酸激酶的新型小分子抑制剂)对肿瘤的缺氧和放射反应的作用。材料与方法:用BIBF 1120处理裸鼠中生长不良的人鳞状细胞癌FaDu,并通过功能组织学进行研究。为了测试BIBF 1120对放射生物学低氧分数(rHF),肿瘤干细胞的数量和内在放射敏感性以及分次照射后的结果的影响,进行了一系列局部肿瘤控制测定。结果:BIBF 1120显着降低了血管面积,血管灌注信号和肿瘤生长率,但并未影响肿瘤缺氧或肿瘤干细胞的数量和内在放射敏感性。并发BIBF 1120对分次照射后的局部肿瘤控制没有影响。结论:三重血管激酶抑制作用可明显减少血管生成,具有灌注信号的血管面积和肿瘤生长,但不会改变肿瘤低氧或肿瘤干细胞的放射反应。为了更好地定义和利用这种策略改善分次放疗后局部肿瘤控制的潜力,有必要对抗血管生成策略与放射线之间的相互作用机理进行进一步实验。

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