• 1.昆明醫(yī)學院第一附屬醫(yī)院普通外科(昆明650032);;
  • 2.浙江省蒼南縣第三人民醫(yī)院普通外科(蒼南325800);;
  • 3.昆明醫(yī)學院第一附屬醫(yī)院實驗中心;

目的 探討槐耳清膏在體外對人直腸癌HR8348細胞的生長抑制作用和凋亡誘導作用及其作用機理。方法 將處于對數(shù)生長期的HR8348細胞用含槐耳清膏的培養(yǎng)基培養(yǎng)36 h,用四氮唑藍(MTT)比色法檢測吸光度(OD)值,計算抑制率; 用甲基綠-派若寧染色法及TUNEL法檢測細胞凋亡指數(shù); 用免疫組織化學方法檢測bcl-2、bcl-xl、bax、bak及p53基因表達的情況。結果 槐耳清膏對HR8348細胞的抑制率隨濃度增加而上升,濃度為4.0 mg/ml時抑制率最大(71.1%),與5-FU組(濃度為10 μg/ml)相比差異無顯著性意義(P>0.05)。甲基綠-派若寧染色法和TUNEL法均可見到典型的細胞凋亡、凋亡小體或出泡現(xiàn)象,凋亡指數(shù)隨槐耳清膏濃度的增加而增加,當濃度達4.0 mg/ml時,凋亡指數(shù)迅速上升,甲基綠-派若寧法為0.1620±0.0128,TUNEL法為0.2612±0.0158,均大于5-FU組的凋亡指數(shù)(0.0780±0.0095和0.1028±0.0131),P<0.05?;倍甯嘟Mbcl2、bclxl、bak、p53蛋白表達較空白對照組明顯增強(P<0.05),而bax變化不明顯(P>0.05)。槐耳清膏組bak/bcl-2 和bak/bcl-xl比值顯著大于空白對照組。結論 槐耳清膏在體外對人直腸癌HR8348細胞具有顯著的抑制作用和凋亡誘導作用?;倍甯嗾T導人直腸癌HR8348細胞凋亡可能與提高bak/bcl-2、bak/bcl-xl比值及上調p53基因表達有關。

引用本文: 程若川,湯禮貴,蘭麗琴,賈偉. 槐耳清膏誘導人直腸癌HR8348細胞凋亡的實驗研究. 中國普外基礎與臨床雜志, 2003, 10(6): 568-571. doi: 復制

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