Weichselbaum R, Dahlberg W, Little J B, Ervin T J, Miller D, Hellman S, Rheinwald J G
Br J Cancer. 1984 May;49(5):595-601. doi: 10.1038/bjc.1984.94.
We have investigated X-ray survival parameters and repair of potentially lethal damage ( PLDR ) in ten early passage squamous cell carcinoma cell lines derived from patients who were biopsied before initiation of radiotherapy or after radiation therapy failure. Radiosensitivity (D0) ranged from 1.07 to 1.93 (Gy), extrapolation numbers (-n) from 1.17 to 2.14 and PLD recovery at 24 h from 1.4 to 20.3. Despite significant differences in these parameters amongst the cell lines, a firm correlation between radiocurability and any individual radiobiological parameter could not be established. Our data suggest that the mechanisms associated with radioresistance are complex and that any single radiobiological parameter may not predict clinical success or failure.
我们研究了来自放疗开始前活检或放疗失败后活检患者的10个早期传代鳞状细胞癌细胞系的X射线存活参数和潜在致死性损伤(PLDR)的修复情况。放射敏感性(D0)范围为1.07至1.93(Gy),外推数(-n)为1.17至2.14,24小时时PLD恢复率为1.4至20.3。尽管这些参数在细胞系之间存在显著差异,但无法确定放射可治愈性与任何单个放射生物学参数之间的牢固相关性。我们的数据表明,与放射抗性相关的机制很复杂,任何单个放射生物学参数可能都无法预测临床的成功或失败。