生理性深层海水联合热疗治疗肝细胞癌的体外抑瘤研究

目的：探讨生理性深层海水（PDSW）联合热疗对肝细胞癌的体外抑瘤作用。方法将取自我国海南省海域的深层海水进行制备，制成PDSW，检测所含有的部分元素。体外培养的正常肝细胞和人肝癌QGY‐7703细胞被随机分为PDSW组和生理盐水组，PDSW组加入PDSW，生理盐水组给予等量生理盐水，24h后，每天分别接受40℃热疗6h和43℃热疗1h，在热疗后的24、48、72h，用MTT法检测热疗结合PDSW对正常肝细胞及人肝癌QGY‐7703细胞的抑制率。同时检测PDSW及生理盐水在40℃6h连续10d状态下对人肝癌QGY‐7703细胞克隆形成率的影响。结果MTT检测结果显示肿瘤抑制率在两组均呈时间和浓度依赖性。PDSW组的肿瘤抑制率明显较生理盐水组高，差异有统计学意义（P＜0．05）。PDSW组对正常肝细胞的生长抑制率明显低于生理盐水组。此外，PDSW组的肿瘤细胞克隆形成率较生理盐水组低，差异有统计学意义（P＜0．05）。结论PDSW能够提高正常肝细胞对热的耐受性。当联合热疗时，可明显抑制人肝癌QGY‐7703细胞生长。

The anti-cancer effects of physiological deep-sea water combined with hyperthermia for hepatocellular carcinoma in vitro

Objective To explore the anti‐cancer effects of physiological deep‐sea water(PDSW) combined with hyperther‐mia for hepatocellular carcinoma in vitro .Methods Deep‐sea water (DSW) from the south Chinese sea was processed ,and made in‐to PDSW ,detection of some elements .In vitro ,the cultured normal liver cells and human hepatoma QGY‐7703 cells were randomly divided into PDSW group and normal saline(NS) group ,the NS group received saline ,the PDSW group received different concentra‐tions of PDSW .Two groups were heated respectively to 6 h of 40 ℃ or 1 h of 43 ℃ ,24 ,48 ,72 h after the administration of PDSW or saline ,the normal liver cells and QGY‐7703 cells proliferation capacity and toxicity were investigated by MTT assay .At the same time testing PDSW and NS in 40 ℃ 6 h for 10 d state of human liver QGY‐7703 cell clone formation rate .Results The results of MTT assay showed that tumor inhibitory rate were time and concentration dependent in tow groups .Tumor inhibitory rate of PD‐SW group in different time was significantly higher than NS group (P<0 .05) .On the other hand ,the inhibitory of hepatocyte for PDSW group in different time were significantly lower than NS group .In addition ,the clone formation rate of PDSW group was lower than those of NS group(P<0 .05) .Conclusion PDSW can improve the heat tolerance of normal liver cells .When combine with heat ,it can obviously inhibit the growth of human liver cancer QGY‐7703 cells .