1.齐齐哈尔医学院医药科学研究院(博士后工作站),黑龙江 齐齐哈尔;161006
2.黑龙江中医药大学博士后流动站,哈尔滨 150040
3.齐齐哈尔医学院公共卫生学院,黑龙江 齐齐哈尔 161006
4.齐齐哈尔医学院药学院,黑龙江 齐齐哈尔 161006
5.齐齐哈尔医学院附属第三医院妇产科,黑龙江 齐齐哈尔 161099
Received:09 October 2022,
Revised:2023-03-07,
Accepted:09 March 2023,
Published:15 April 2023
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马立威,陈哲,王文豹,等.狼毒大戟中二萜类化合物DP抗白血病的作用机制研究[J].中国药房,2023,34(07):825-831.
MA Liwei,CHEN Zhe,WANG Wenbao,et al.Study on the mechanism of diterpenoid DP from Euphorbia fischeriana against leukemia[J].ZHONGGUO YAOFANG,2023,34(07):825-831.
马立威,陈哲,王文豹,等.狼毒大戟中二萜类化合物DP抗白血病的作用机制研究[J].中国药房,2023,34(07):825-831. DOI: 10.6039/j.issn.1001-0408.2023.07.11.
MA Liwei,CHEN Zhe,WANG Wenbao,et al.Study on the mechanism of diterpenoid DP from Euphorbia fischeriana against leukemia[J].ZHONGGUO YAOFANG,2023,34(07):825-831. DOI: 10.6039/j.issn.1001-0408.2023.07.11.
目的
2
探究狼毒大戟中二萜类化合物12-去氧佛波醇-13-棕榈酸酯(DP)能否通过磷脂酰肌醇3激酶(PI3K)/蛋白激酶B(Akt)信号通路发挥抗白血病的作用,为将其开发成抗白血病新药提供实验依据。
方法
2
以LY294002(PI3K特异性抑制剂)为工具药,采用MTT、Annexin Ⅴ-FITC/PI、AO-EB染色法观察并测定DP作用24 h后对人原髓细胞白血病细胞HL60增殖、凋亡的影响;采用ELISA法测定DP作用24 h后细胞培养液中乳酸脱氢酶(LDH)的释放量及细胞中胱天蛋白酶3(caspase-3)、caspase-9的活性。采用实时荧光定量-PCR法检测DP作用24 h后细胞中caspase-3、caspase-9、叉头框O3a(FoxO3a)、B细胞淋巴瘤2细胞死亡的相互作用介质(Bim)的mRNA转录水平;采用Western blot法检测细胞中磷酸化FoxO3a(p-FoxO3a)、磷酸化Akt(p-Akt)的蛋白表达水平,并采用免疫染色法在激光共聚焦显微镜下观察细胞中FoxO3a蛋白核转位情况。
结果
2
10 μmol/L DP和10 μmol/L DP+LY294002对HL60细胞有明显的增殖抑制及凋亡诱导作用(
P
<0.01);5、10、20 μmol/L DP作用后的细胞均呈典型的凋亡形态学特征,细胞培养液中LDH释放量和细胞中caspase-3、caspase-
9活性均显著升高(
P
<0.05或
P
<0.01),其作用具有一定的浓度依赖性趋势;10 μmol/L DP和10 μmol/L DP+LY294002作用后细胞中caspase-3、caspase-9和Bim mRNA转录水平均显著升高(
P
<0.05或
P
<0.01),FoxO3a mRNA转录水平和p-FoxO3a、p-Akt蛋白表达水平均显著降低(
P
<0.05或
P
<0.01);10 μmol/L DP+LY294002组细胞可见FoxO3a蛋白的核转位变化,且该变化较LY294002组明显。
结论
2
DP可通过抑制PI3K/Akt信号通路抑制人白血病HL60细胞增殖并诱导其凋亡。
OBJECTIVE
2
To explore whether diterpenoid 12-deoxyphorbol-13-palmitate (DP) from
Euphorbia fischeriana
can exert anti-leukemia effects through the phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt) signal pathway, and to provide experimental evidence for developing it into a new anti-leukemia drug.
METHODS
2
Using LY294002 (PI3K specific inhibitor) as tool drug, the effects of 24 h DP treatment on the proliferation and apoptosis of human myeloid leukemia HL60 cells were detected by MTT method, Annexin Ⅴ-FITC/PI staining and AO-EB staining. ELISA method was used to detect lactic dehydrogenase (LDH) release and the activities of cysteinyl aspartate specific proteinase 3 (caspase-3) and caspase-9. The transcriptional level of caspase-3, caspase-9, forkhead box O3a (FoxO3a) and B cell lymphoma 2 interacting mediator of cell death (Bim) mRNA were detected by real-time quantitative polymerase chain reaction (qRT-PCR). The protein expression of phosphorylated FoxO3a (p-FoxO3a) and phosphorylated Akt (p-Akt) were detected by Western blot method. The nuclear translocation of FoxO3a protein was detected by immunostaining combined with laser confocal microscopy.
RESULTS
2
10 μmol/L DP and 10 μmol/L DP+LY294002 could inhibit the proliferation and induce the apoptosis of HL60 cells (
P
<0.01). After treatment of 5, 10, 20 μmol/L DP, HL60 cells showed typical morphological characteristics of apoptosis; DP could sign
ificantly increase the levels of LDH release and the activities of caspase-3 and caspase-9 (
P
<0.05 or
P
<0.01), in dose-dependent manner. After treatment of 10 μmol/L DP and 10 μmol/L DP+LY294002, the transcriptional levels of caspase-3, caspase-9 and Bim mRNA were increased significantly (
P
<0.05 or
P
<0.01), and transcriptional level of FoxO3a mRNA and protein expressions of p-FoxO3a and p-Akt were decreased significantly (
P
<0.05 or
P
<0.01). Nuclear translocation changes were observed in FoxO3a protein in 10 μmol/L DP+LY294002 group, and the change was more significant than that of LY294002 group.
CONCLUSIONS
2
DP can inhibit the proliferation and induce the apoptosis of HL60 cells via inhibiting PI3K/Akt signaling pathway.
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