丙戊酸钠抑制HL-60细胞增殖并诱导其凋亡与分化医学论文
丙戊酸钠抑制HL-60细胞增殖并诱导其凋亡与分化_医学论文 作者:韩冬梅,陈协群,梁蓉,董宝侠,尹文 【摘要】 为进一步研究丙戊酸钠(sodium valproate;VPA)对白血病细胞HL-60的
丙戊酸钠抑制HL-60细胞增殖并诱导其凋亡与分化_医学论文作者:韩冬 梅,陈协群,梁蓉,董宝侠,尹文 【摘要】为进一步研究丙戊酸钠(sodiumvalproate;VPA)对白血病细胞 HL-60的增殖、凋亡和分化的影响,采用MTT法检测不同浓度的VPA对HL-60 细胞增殖的作用;细胞化学染色法观察药物作用后细胞形态的变化;NBT还原 实验结合形态学作为观测细胞分化指标;应用流式细胞术检测不同浓度药物作 用后细胞周期的变化及凋亡细胞的比例。结果显示:VPA能明显抑制HL-60的 增殖;经2mmol/LVPA处理24-48小时后,HL-60出现胞浆空泡、核固缩、核 碎裂及凋亡小体;AnnexinV阳性的早期凋亡细胞比例由2.9%升高到17.1%; 流式细胞术检测出明显的亚二倍体峰;G1期细胞由51.1%增加至84.6%,S期细 胞由37.9%减低至14.4%。0.25mmol/LVPA作用1周后,促进HL-60细胞向中 幼粒、晚幼粒阶段分化,NBT阳性细胞百分率为(47±2)%。结论:VPA能明显 抑制白血病细胞HL-60的增殖,并诱导其分化及凋亡。 【关键词】丙戊酸钠 InhibitionofProliferationandInductionofApoptosisand DifferentiationofLeukemicCellLineHL-60bySodiumValproate AbstractToinvestigatetheinfluenceofsodiumvalproate(VPA) onproliferation,apoptosisanddifferentiationofHL-60cellline, effectofVPAinvariousconcentrationsonproliferationofHL-60 cellswasdetectedbyMMT;Wright-Giemsastainingwasperformedto observethemorphologicchangesofHL-60cells;NBTexperimentwas usedtotestthedifferentiationofHL-60cells;flowcytometrywas usedtoobservecellcyclesandanalyzetheapoptosis.Theresults indicatedthatthechangesofthegrowthcurveshowedinhibitionof proliferationofHL-60cells.Aftera24-48hoursculturewith2 mmol/LVPA,thecellsexhibitednuclearshrinkage,pyknosis fragmentationandappearenceofapoptosisbodies.Thepercentageof theannexinV+/PI-cellswhichwereapoptoticincreasedfrom2.9%to 17.1%;hypodiploidpeakwasobserved;thepercentageofHL-60cells inG1phaseincreasedfrom51.1%to84.6%andthecellsinSphase decreasedfrom37.9%to14.4%.Afteraweekculturewith0.25mmol/L VPA,thecellsexhibitedcharacteristicsofdifferentiation.The percentageofNBTpositivecellswas(47±2)%.Itisconcludedthat VPAcaninhibittheproliferationofHL-60cellswhileinducing differentiationandapoptosisofthesecells.Themechanismneedsto befurtherstudied. Keywordssodiumvalproate;HL-60cell;cellproliferation;cell apoptosis;celldifferentiation

