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放射治疗(简称:放疗)应用于临床已有一千多年的历史,它起源于上世纪伦琴发现X射线和居里夫妇发现镭。现代放射疗法始于20世纪50年代放射性钴远距离治疗的应用。1971年,CT的出现实现了辐射传导从二维到三维的转变,从而实现了将电子束能量准确地定位于肿瘤。虽然放疗能有效控制一定类型的肿瘤生长,但是受照肿瘤随后出现适应性反应导致产生辐射耐受性[1]。越来越多的研究表明,肿瘤组织存在肿瘤干细胞亚细胞群,正是由于这群亚细胞群的存在导致了对临床放疗耐受性的产生[2]。另外,肿瘤放疗也可能导致肿瘤干细胞扩增、基因突变或表观遗传改变,从而使肿瘤细胞获得治疗性耐受。因此,了解肿瘤干细胞在肿瘤组织固有和获得性辐射耐受过程中所发挥的作用,以及肿瘤干细胞维持其干性的分子机制对提高肿瘤患者放疗的疗效具有非常重要的作用。
肿瘤干细胞与辐射抗性的研究进展
Advance progress of cancer stem cells and radioresistance
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摘要: 放射治疗是治疗肿瘤的常规手段,而辐射抗性的产生是限制放射治疗广泛应用的重要因素之一。笔者简述了辐射耐受乳腺癌和多形性成角质母细胞瘤的特异性肿瘤干细胞特征的研究进展,为与放射治疗相结合的肿瘤靶向治疗提供新的研究思路。Abstract: Radiotherapy is a routine strategy for cancer treatment, however, occurrence of therapy resistance limits wide application of radiotherapy. This review summarizes the radioresistance of breast cancer and glioblastoma multiforme that is conferred by cancer stem cells, to order to provide a new idea for exploration of tumor targeting therapy with radiotherapy.
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Key words:
- Cancer stem cells /
- Breast neoplasms /
- Glioblastoma /
- Targeted therapy /
- Radioresistance
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