王泓源等
[摘要] 目的 探讨不同浓度的依托咪酯是否具有直接诱导人肝癌HepG2细胞凋亡的作用,寻找依托咪酯临床治疗的新途径。 方法 人肝癌细胞株HepG2体外扩增培养备用,选取不同浓度的依托咪酯E1、E2、E3和对照组(空白),分别培养12h、24h、48h后观察。 结果 与空白对照组相比,培养12h、24h、48h后E1组、E2组人肝癌细胞株HepG2细胞凋亡率无明显差异E3组凋亡率不断增加,E1与E3组对比人肝癌细胞株HepG2细胞凋亡率具有显著性差异E2与E3组对比人肝癌细胞株HepG2细胞凋亡率具有明显差异结论 依托咪酯在临床安全有效的浓度下不直接诱导人肝癌HepG2细胞的体外凋亡,浓度及时间达到一定峰值时可具有直接诱导人肝癌HepG2细胞体外凋亡的作用。
[关键词] 依托咪酯;HepG2细胞;肾上腺;免疫;细胞凋亡
[中图分类号] R735.7 [文献标识码] A [文章编号] 2095-0616(2014)10-24-03
[Abstract] Objective To explore the different concentrations of etomidat whether directly induce the cell apoptosis to seek open up new ways of etomidate clinical treatment. Methods Human liver HepG2 cell line were amplificated cultivation for use in vitro, choose different concentrations of etomidate E1, E2 and E3 (blank) as control group.HepG2 were observed respectively after 12h, 24h, and 48h.With liver cancer HepG2 cell lines as target cells. Results Compared with the blank control group, 12h, 24h, 48h after culture E1 and E2 group liver HepG2 cell line apoptosis rate has no obvious difference(P>0.05), E3 group of apoptosis rate increased, and with significant difference (P<0.05); As the extension of incubation time and concentration increasing, E1 and E2 group compared with liver HepG2 cell line apoptosis rate have no significant difference(t=1.732,P>0.05), E1 and E3 group compared with liver HepG2 cell line apoptosis rate have significant difference(t=1.864,P<0.05),E2 and E3 group compared with liver HepG2 cell line apoptosis rate have obvious difference (t=1.691, P<0.05). Conclusion Etomidate with safe and effective concentrations in clinical are not directly induced HepG2 liver cancer cell apoptosis in vitro, but when concentration and time reach a certain peak can be directly induced the hepatocellular carcinoma HepG2 cells apoptosis in vitro.
[Key words] Etomidate; HepG2 cells; Adrenal gland; Immunity; Apoptosis
依托咪酯可以直接抑制HL-60的细胞活性,并且诱发该细胞的凋亡,也有相关文献报道依托咪酯对鼠肝线粒体能量代谢有影响,还有对肝脏缺血-再灌注损伤的保护均有作用[1-4],那么依托咪酯是否也会直接诱发人肝癌HepG2细胞的凋亡呢?我们提出了该研究的假设。本文设计不同浓度的依托咪酯是否具有直接诱导该细胞凋亡的作用,2.1.1 细胞冻存 取1mL的胰酶消化2min后,将对数生长期的细胞从培养瓶表面贴壁冲洗下去,并悬浮于3mL的培养液中,用1000rpm离心5min,去上清液。将人肝癌HepG2细胞悬浮于1mL的冻存液中,调整细胞浓度至106/mL,每个冻存管中加入1mL的细胞冻存液,放置-20℃冰箱内保存2h,然后置于-80℃冰箱过夜。
2.1.2 细胞复苏 将冻存备用的细胞,放入37℃的水浴箱内融化复苏。
2.1.3 细胞培养 将人肝癌HepG2细胞放置于37℃、5% CO2细胞培养箱中培养,每3天传代培养1次,细胞贴壁达到70%时,以0.25%胰酶消化,使细胞全部都浸于溶液,倒置显微镜下观察,细胞变圆后,但尚未漂起时加入5mL培养液终止消化,然后分到另两个培养瓶中,加入新鲜培养基后再放置于37℃、5%CO2细胞培养箱中继续培养,取对数生长期细胞。
2.1.4 细胞传代 采用倒置显微镜观察细胞贴壁生长状况,当生长至80%以上时,用0.25%胰酶消化进行传代,并置于37℃、5%CO2细胞培养箱中继续培养。
4 讨论
依托咪酯为临床常用的一种麻醉剂,在静脉麻醉过程中只需一次给药就可以获得很好的效果,但是依托咪酯所产生的毒性作用也是麻醉剂中独有的,它可以促进免疫细胞的凋亡。许多国内学者研究依托咪酯诱导肿瘤细胞凋亡作用,从而分析依托咪酯的药理学和临床治疗的意义。有研究表明[5-8],小剂量依托咪酯对人急性髓性细胞白血病细胞具有一定的抑制作用。
为探讨不同浓度的依托咪酯是否具有直接诱导人肝癌HepG2细胞凋亡的作用而进行该试验。采用小剂量和大剂量的依托咪酯做细胞凋亡分析,综合相关文献,参照依托咪酯对外周血单个核细胞凋亡影响的试验方法及药物剂量规格[9-12],观察该细胞正常时细胞凋亡情况,以及分别给予小剂量0.5μg/mL,5μg/mL的依托咪酯、大剂量50μg/mL后12h、2h、48h依托咪酯时对人肝癌HepG2细胞凋亡的情况。实验结果证明依托咪酯诱导人肝癌细胞株HepG2细胞的凋亡具有一定的浓度-效应与时间-效应的关系,为依托咪酯开辟临床治疗的新途径。
[参考文献]
[1] 于航,贾庆波,王璐.缺血后处理对局灶性脑缺血再灌注损伤大鼠 caspase-3 的影响[J].中国应用生理学杂志,2007,25(1):6-8.
[2] 韩敏,刘艳凯,薛茜.脑缺血再灌注损伤的研究进展[J].河北北方学院学报(医学版),2006,23(5):75-78.
[3] Delogu G,Moretti S,Famularo G,et al.Circulating neutrophils exhibit enhanced apoptosis associated with mitochondrial dysfunctions aftersurgery under general anaesthesia[J].Acta Anaesthesiol Scand,2001,45(1):87-94.
[4] 郝宇华.缺血后处理对大鼠脑缺血再灌注损失的保护作用[D].天津:天津医科大学研究生院,2008:6.
[5] Katja C. Zimmermann,Christine Bonzon,Douglas R. Green.The machinery of programmed cell death[J]. Pharmacol & Therapeut,2001,92(1):57-70.
[6] Ishii Y,Hori Y,Sakai S,et al.Control of differentiation and apoptosis of human myeloid leukemia cells by cytokinins and cytokinin nucleosides,plant redifferentiation-inducing hormones[J]. Cell Growth Differ,2002,13(1):19-26.
[7] Marieke den Brinker,KF.M.Joosten,Olivia Liem,et al.Adrenal Insufficiency in Meningococcal Sepsis:Bioavailable Cortisol Levels and Impact of Interleukin-6 Levels and Intubation with Etomidate on Adrenal Function and Mortality[J].J Clin Endocrinol Metab,2005,90(9): 5110-5117.
[8] Ho-Kyung Song,Dae Chul Jeong.The Effect of Propofol on Cytotoxicity and Apoptosis of Lipopolysaccharide-Treated Mononuclear Cells and LympHocytes[J].Anesth Analg,2004,98(6):1724-1728.
[9] 焦裕霞,熊君宇.依托咪酯诱发HL-60细胞凋亡以及预处理对其的抑制作用[D].大连:大连医科大学,2007:6.
[10] Marieke den Brinker,KF.M. Joosten,Olivia Liem,et al.Adrenal insufficiency in meningococcal sepsis:Bioavailable cortisol levels and impact of interleukin-6 levels and intubation with etomidate on adrenal funtion and mortality[J].J Clin Endocrinol Metab,2005,90(9):5110-5117.
[11] Ho-Kyung Song,Dae Chul Jeong.The effect of propofolon cytotoxi city and apoptosis of lipopolysacchari de-treated mononuclear cells and lymphocytes[J].Anesth Analg,2004,98(6):1724-28.
[12] Rasola A,Bernardi P.The mitochon drial permeability transition poreand its involveement in cell death and indisease pathogenesis[J]. Apoptosis,2007,12(5):815-833.
(收稿日期:2014-03-10)
4 讨论
依托咪酯为临床常用的一种麻醉剂,在静脉麻醉过程中只需一次给药就可以获得很好的效果,但是依托咪酯所产生的毒性作用也是麻醉剂中独有的,它可以促进免疫细胞的凋亡。许多国内学者研究依托咪酯诱导肿瘤细胞凋亡作用,从而分析依托咪酯的药理学和临床治疗的意义。有研究表明[5-8],小剂量依托咪酯对人急性髓性细胞白血病细胞具有一定的抑制作用。
为探讨不同浓度的依托咪酯是否具有直接诱导人肝癌HepG2细胞凋亡的作用而进行该试验。采用小剂量和大剂量的依托咪酯做细胞凋亡分析,综合相关文献,参照依托咪酯对外周血单个核细胞凋亡影响的试验方法及药物剂量规格[9-12],观察该细胞正常时细胞凋亡情况,以及分别给予小剂量0.5μg/mL,5μg/mL的依托咪酯、大剂量50μg/mL后12h、2h、48h依托咪酯时对人肝癌HepG2细胞凋亡的情况。实验结果证明依托咪酯诱导人肝癌细胞株HepG2细胞的凋亡具有一定的浓度-效应与时间-效应的关系,为依托咪酯开辟临床治疗的新途径。
[参考文献]
[1] 于航,贾庆波,王璐.缺血后处理对局灶性脑缺血再灌注损伤大鼠 caspase-3 的影响[J].中国应用生理学杂志,2007,25(1):6-8.
[2] 韩敏,刘艳凯,薛茜.脑缺血再灌注损伤的研究进展[J].河北北方学院学报(医学版),2006,23(5):75-78.
[3] Delogu G,Moretti S,Famularo G,et al.Circulating neutrophils exhibit enhanced apoptosis associated with mitochondrial dysfunctions aftersurgery under general anaesthesia[J].Acta Anaesthesiol Scand,2001,45(1):87-94.
[4] 郝宇华.缺血后处理对大鼠脑缺血再灌注损失的保护作用[D].天津:天津医科大学研究生院,2008:6.
[5] Katja C. Zimmermann,Christine Bonzon,Douglas R. Green.The machinery of programmed cell death[J]. Pharmacol & Therapeut,2001,92(1):57-70.
[6] Ishii Y,Hori Y,Sakai S,et al.Control of differentiation and apoptosis of human myeloid leukemia cells by cytokinins and cytokinin nucleosides,plant redifferentiation-inducing hormones[J]. Cell Growth Differ,2002,13(1):19-26.
[7] Marieke den Brinker,KF.M.Joosten,Olivia Liem,et al.Adrenal Insufficiency in Meningococcal Sepsis:Bioavailable Cortisol Levels and Impact of Interleukin-6 Levels and Intubation with Etomidate on Adrenal Function and Mortality[J].J Clin Endocrinol Metab,2005,90(9): 5110-5117.
[8] Ho-Kyung Song,Dae Chul Jeong.The Effect of Propofol on Cytotoxicity and Apoptosis of Lipopolysaccharide-Treated Mononuclear Cells and LympHocytes[J].Anesth Analg,2004,98(6):1724-1728.
[9] 焦裕霞,熊君宇.依托咪酯诱发HL-60细胞凋亡以及预处理对其的抑制作用[D].大连:大连医科大学,2007:6.
[10] Marieke den Brinker,KF.M. Joosten,Olivia Liem,et al.Adrenal insufficiency in meningococcal sepsis:Bioavailable cortisol levels and impact of interleukin-6 levels and intubation with etomidate on adrenal funtion and mortality[J].J Clin Endocrinol Metab,2005,90(9):5110-5117.
[11] Ho-Kyung Song,Dae Chul Jeong.The effect of propofolon cytotoxi city and apoptosis of lipopolysacchari de-treated mononuclear cells and lymphocytes[J].Anesth Analg,2004,98(6):1724-28.
[12] Rasola A,Bernardi P.The mitochon drial permeability transition poreand its involveement in cell death and indisease pathogenesis[J]. Apoptosis,2007,12(5):815-833.
(收稿日期:2014-03-10)
4 讨论
依托咪酯为临床常用的一种麻醉剂,在静脉麻醉过程中只需一次给药就可以获得很好的效果,但是依托咪酯所产生的毒性作用也是麻醉剂中独有的,它可以促进免疫细胞的凋亡。许多国内学者研究依托咪酯诱导肿瘤细胞凋亡作用,从而分析依托咪酯的药理学和临床治疗的意义。有研究表明[5-8],小剂量依托咪酯对人急性髓性细胞白血病细胞具有一定的抑制作用。
为探讨不同浓度的依托咪酯是否具有直接诱导人肝癌HepG2细胞凋亡的作用而进行该试验。采用小剂量和大剂量的依托咪酯做细胞凋亡分析,综合相关文献,参照依托咪酯对外周血单个核细胞凋亡影响的试验方法及药物剂量规格[9-12],观察该细胞正常时细胞凋亡情况,以及分别给予小剂量0.5μg/mL,5μg/mL的依托咪酯、大剂量50μg/mL后12h、2h、48h依托咪酯时对人肝癌HepG2细胞凋亡的情况。实验结果证明依托咪酯诱导人肝癌细胞株HepG2细胞的凋亡具有一定的浓度-效应与时间-效应的关系,为依托咪酯开辟临床治疗的新途径。
[参考文献]
[1] 于航,贾庆波,王璐.缺血后处理对局灶性脑缺血再灌注损伤大鼠 caspase-3 的影响[J].中国应用生理学杂志,2007,25(1):6-8.
[2] 韩敏,刘艳凯,薛茜.脑缺血再灌注损伤的研究进展[J].河北北方学院学报(医学版),2006,23(5):75-78.
[3] Delogu G,Moretti S,Famularo G,et al.Circulating neutrophils exhibit enhanced apoptosis associated with mitochondrial dysfunctions aftersurgery under general anaesthesia[J].Acta Anaesthesiol Scand,2001,45(1):87-94.
[4] 郝宇华.缺血后处理对大鼠脑缺血再灌注损失的保护作用[D].天津:天津医科大学研究生院,2008:6.
[5] Katja C. Zimmermann,Christine Bonzon,Douglas R. Green.The machinery of programmed cell death[J]. Pharmacol & Therapeut,2001,92(1):57-70.
[6] Ishii Y,Hori Y,Sakai S,et al.Control of differentiation and apoptosis of human myeloid leukemia cells by cytokinins and cytokinin nucleosides,plant redifferentiation-inducing hormones[J]. Cell Growth Differ,2002,13(1):19-26.
[7] Marieke den Brinker,KF.M.Joosten,Olivia Liem,et al.Adrenal Insufficiency in Meningococcal Sepsis:Bioavailable Cortisol Levels and Impact of Interleukin-6 Levels and Intubation with Etomidate on Adrenal Function and Mortality[J].J Clin Endocrinol Metab,2005,90(9): 5110-5117.
[8] Ho-Kyung Song,Dae Chul Jeong.The Effect of Propofol on Cytotoxicity and Apoptosis of Lipopolysaccharide-Treated Mononuclear Cells and LympHocytes[J].Anesth Analg,2004,98(6):1724-1728.
[9] 焦裕霞,熊君宇.依托咪酯诱发HL-60细胞凋亡以及预处理对其的抑制作用[D].大连:大连医科大学,2007:6.
[10] Marieke den Brinker,KF.M. Joosten,Olivia Liem,et al.Adrenal insufficiency in meningococcal sepsis:Bioavailable cortisol levels and impact of interleukin-6 levels and intubation with etomidate on adrenal funtion and mortality[J].J Clin Endocrinol Metab,2005,90(9):5110-5117.
[11] Ho-Kyung Song,Dae Chul Jeong.The effect of propofolon cytotoxi city and apoptosis of lipopolysacchari de-treated mononuclear cells and lymphocytes[J].Anesth Analg,2004,98(6):1724-28.
[12] Rasola A,Bernardi P.The mitochon drial permeability transition poreand its involveement in cell death and indisease pathogenesis[J]. Apoptosis,2007,12(5):815-833.
(收稿日期:2014-03-10)