膜结合型前列腺素E2合酶1抑制剂MK886对白血病HL-60/A细胞周期的影响  

Effects of membrane-bound prostaglandin E2 synthase 1 inhibitor MK886 on cell cycle of leukemia HL-60/A cells

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作  者:李益清[1] 尹松梅[1] 马丽萍[1] 聂大年[1] 谢双锋[1] 王秀菊[1] 吴裕丹[1] 

机构地区:[1]510120广州,中山大学孙逸仙纪念医院血液内科

出  处:《白血病.淋巴瘤》2012年第9期513-516,共4页Journal of Leukemia & Lymphoma

基  金:教育部高等学校博士学科点专项科研基金(新教师类)(20110171120111);中央高校基本科研业务费专项资金中山大学青年教师培育计划(医科)(11ykpy25)

摘  要:目的探讨膜结合型前列腺素E2合酶1(mPGES-1)抑制剂MK886对人类急性髓系白血病耐药细胞HL.60/A细胞周期的作用。方法采用流式细胞术、Western blot、酶联免疫吸附(ELISA)等方法,检测HL-60/A及健康人单个核细胞(MNC)、敏感细胞株HL.60的细胞周期、mPGES-1蛋白、细胞周期素D1(cvctinD1)的差异,检测不同浓度的MK886对HL-60/A细胞周期的作用及对cyclinD1、mPGES-1、PGE2、P-Akt、c—myc蛋白的影响。结果与健康人MNC及敏感细胞株HL-60比较,HL-60/A细胞cyclinD1、mPGES-1表达最高,G0~G1期细胞比例为(30.53±2.15)%,较正常MNC[(62.63±6.58)%]及HL-60细胞[(38.86±2.25)%]减少(均P〈0.05);S期比例为(57.56±1.54)%,较正常MNC](12.18±4.43)%]及HL-60细胞[(47.70±1.88)%]明显增多(均P〈0.05)。MK886作用后,被阻滞于Go~G。期的细胞增多,同时mPGES-1表达下调,合成PGE2减少,cyclinD1、P—Akt、c-myc蛋白表达下降。结论MK886对白血病HL-60/A细胞有细胞周期阻滞作用,其机制与抑制mPGES-1表达,减少PGE2的合成,抑制cyclinD1、P—Akt、c—myc表达有关。Objective To investigate the effect of membrane-bound prostaglandin E2 synthase 1 (mPGES-1) inhibitor MK886 on cell cycle of the human acute myeloid leukemia HL-60/A cells. Methods Flow cytometry, Western blot and ELISA were used to measure the difference of cell cycle,expression of cyclin D1, mPGES-1 among HL-60/A cells, MNC and HL-60 cells. The effect of MK886 on cell cycle, cyclin D1, mPGES-1, PGE2, P-Akt and e-mye of HL-60/A cells were observed. Results Compared with MNC and HL-60 cells, the expression of cyclin D1 and mPGES-1 were higher in HL-60/A cells, the percentage of G0-Gl phase was decreased [MNC (62.63±6.58) %, HL-60 (38.86±2.25) %, HL-60/A (30.53±2.15) %] and S phase inereased[MNC (12.18±4.43) %, HL-60 (47.70±1.88) %, HL-60/A (57.56±1.54) %] (all P〈 0.05). After treated with MK886, cell cycle was arrested in G0-G1 phase. The expression of mPGES-1, cyclin D1, P-Akt and c-myc and synthesis of PGE2 were decreased. Conclusion MK886 can arrest HL-60/A cell cycles in G0-G1 phase, which possibly through down-regulation of mPGES-1/PGE2, reduction cyclin D1, P-Akt and c-mye expression.

关 键 词:白血病 实验性 细胞周期 MK886 膜结合型前列腺素E2合酶1 

分 类 号:R733.7[医药卫生—肿瘤]

 

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