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河北北方学院附属第一医院神经外科,河北 张家口 075000
副主任医师,硕士。研究方向:颅内肿瘤。E-mail:lmltx2009@126.com
纸质出版日期:2023-08-30,
收稿日期:2023-02-08,
修回日期:2023-06-21,
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刘明,刘熙鹏,李淳等.水飞蓟素对神经胶质瘤的体内外抑制作用及机制 Δ[J].中国药房,2023,34(16):1955-1960.
LIU Ming,LIU Xipeng,LI Chun,et al.Study on inhibitory effects and mechanism of silymarin on glioma in vivo and in vitro[J].ZHONGGUO YAOFANG,2023,34(16):1955-1960.
刘明,刘熙鹏,李淳等.水飞蓟素对神经胶质瘤的体内外抑制作用及机制 Δ[J].中国药房,2023,34(16):1955-1960. DOI: 10.6039/j.issn.1001-0408.2023.16.07.
LIU Ming,LIU Xipeng,LI Chun,et al.Study on inhibitory effects and mechanism of silymarin on glioma in vivo and in vitro[J].ZHONGGUO YAOFANG,2023,34(16):1955-1960. DOI: 10.6039/j.issn.1001-0408.2023.16.07.
目的
2
探讨水飞蓟素(SM)对神经胶质瘤的体内外抑制作用及潜在机制。
方法
2
将人神经胶质瘤细胞系U87随机分为对照组,低、中、高质量浓度SM组(50、100、200 μg/mL),蛋白激酶B(又称Akt)激活剂组(SC79 20 μmol/L),高质量浓度SM联合Akt激活剂组(SM 200 μg/mL+SC79 20 μmol/L)。经药物(对照组除外)处理后,检测各组细胞的光密度(OD)值、克隆形成率、凋亡率、增殖/凋亡相关蛋白[增殖细胞核抗原(PCNA)、B细胞淋巴瘤2(Bcl-2)、Bcl-2相关X蛋白(Bax)、胱天蛋白酶3(caspase-3)]的表达情况和Akt/促分裂原活化的蛋白激酶(MAPK)信号通路相关蛋白[Akt、p38 MAPK、胞外信号调节激酶1/2(ERK1/2)]的磷酸化水平。于右侧腋窝内皮下注射U87细胞建立异种移植肿瘤裸鼠模型并将其分为对照组,低、中、高剂量SM组(25、50、100 mg/kg),Akt激活剂组(SC79 40 mg/kg)、高剂量SM联合Akt激活剂组(SM 100 mg/kg+SC79 40 mg/kg),每组5只。经药物(裸鼠对照组除外)干预后,称定其瘤体质量并计算瘤体体积。
结果
2
与对照组比较,SM各质量浓度组细胞的OD值,克隆形成率,PCNA、Bcl-2蛋白的表达水平,Akt、p38 MAPK、ERK1/2蛋白的磷酸化水平,以及裸鼠SM各剂量组裸鼠体内的瘤体质量及体积均显著降低/减小,细胞凋亡率和Bax、caspase-3蛋白的表达水平均显著升高,且均有剂量依赖性(
P
<0.05);Akt激活剂组上述指标的变化趋势与之相反(
P
<0.05),且Akt激活剂可明显减弱高质量浓度/高剂量SM对神经胶质瘤的体内外抑制作用(
P
<0.05)。
结论
2
SM可能通过抑制Akt/MAPK信号通路来促进U87细胞的凋亡,抑制其增殖、克隆形成以及异种移植瘤裸鼠体内肿瘤的生长。
OBJECTIVE
2
To investigate the inhibitory effects of silymarin (SM) on glioma
in vivo
and
in vitro
and its potential mechanism.
METHODS
2
Human glioma cell line U87 cells were randomly divided into control group, SM low-concentration, SM medium-concentration and SM high-concentration groups (50, 100, 200 μg/mL), protein kinase B (Akt) activator group (SC79 20 μmol/L), high-concentration of SM combined with Akt activator group (SM 200 μg/mL+SC79 20 μmol/L). After drug treatment (except for the control group), optical density (OD) value, clone formation rate, apoptotic rate, the expressions of proliferation/apoptosis-related proteins [proliferating cell nuclear antigen (PCNA), B-cell lymphoma-2 (Bcl-2), Bcl-2-associated X protein (Bax), caspase-3], the phosphorylation levels of Akt/mitogen-activated protein kinase (MAPK) signaling pathway related proteins [Akt, p38 MAPK, extracellular signal-regulated kinase 1/2 (ERK1/2)] were detected in each group. The xenograft tumor model in nude mice was established by injecting U87 cells subcutaneously via the right armpit, and then divided into control group, SM low-dose, SM medium-dose and SM high-dose groups (25, 50, 100 mg/kg), Akt activator group (SC79 40 mg/kg), high-dose of SM combined with Akt activator group (SM 100 mg/kg+SC79 40 mg/kg), with 5 mice in each group. After drug intervention (except for the control group of nude mice), the tumor mass was weighed and the tumor volume was calculated.
RESULTS
2
Compared with control group, the OD values, clone formation rates, protein expressions of PCNA and Bcl-2, phosphorylation levels of Akt, p38 MAPK and ERK1/2 in SM groups, tumor mass and volume in nude mice of SM groups were all decreased significantly, while the apoptosis rates, protein expressions of Bax and caspase-3 were increased significantly, in a dose-dependent manner (
P
<0.05);the trend of changes in the above indicators in the Akt activator group was opposite (
P
<0.05), and Akt activator could significantly attenuate the inhibitory effect of high-concentration/high-dose SM on glioma
in vivo
and
in vitro (P
<0.05).
CONCLUSIONS
2
SM may promote the apoptosis of U87 cells, and inhibit its proliferation, clone formation and tumor growth in xenograft nude mice by inhibiting Akt/MAPK signaling pathway.
水飞蓟素神经胶质瘤蛋白激酶B/促分裂原活化的蛋白激酶信号通路细胞增殖克隆形成细胞凋亡
gliomaprotein kinase B/mitogen-activated protein kinase signaling pathwayproliferationclone formationapoptosis
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