THE STUDIES OF REVERSAL ON INHIBITING DNA SYNTHESIS AND CLONAL FORMATION OF HL－60 CELLS WITH HYPERTHERMIA

It was confirmed that the damage of HL-60 cells caused by heating (42℃, 60min) was of heterogeueity.The partial recovery of colony survival and 3H-TdR incorporation from inhibited HL-60 cells was acquired through short-term (24h) Iiquid culture. The resultsindicated that inhibition of DNA synthesis and colonyformation of leukemic cells by hyperthermia was partlyreversible. Its clinical significance and pathogenicmechanism were also discussed.

高温抑制HL-60细胞核酸合成与集落形成具有部分可逆性

作者证实高温(42℃,60min)对人早幼粒白血病细胞(HL-60细胞)的损伤程度存在异质性,短期(24 h)液体培养能使受抑制HL-60细胞的集落存活率及~3H-TdR掺入率获得部分恢复.结果提示,高温对白血病细胞DNA合成及集落形成抑制具有部分可逆性.作者对其临床意义及发生机理做了分析.

加热抑制HL—60细胞核酸合成与集落形成具有部分可逆性

本文证实加热(42℃，60分钟)对HL-60细胞的损伤程度存在异质性，短期(24小时)液体培养能使受抑制HL-60细胞的集落存活率及^3H—TdR掺入率获得部分恢复。结果提示，加热对白血病细胞DNA台成及集落形成抑制具有部分可逆性。作者对其临床意义及发生机理也进行了分析。