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新型小分子激酶抑制剂 Ibr-7 对人胰腺癌 Capan-2 细胞的抑制作
用及机制研究 Δ
2
1*
1
1,2 #
阎优优 ,张 博 ,张 琪 ,周冬梅 ,林能明 (1.浙江大学医学院附属杭州市第一人民医院转化医学研究中
2
心,杭州 310006;2.南京医科大学附属杭州第一医院转化医学研究中心,杭州 310006)
中图分类号 R966;R735.9 文献标志码 A 文章编号 1001-0408(2019)04-0499-08
DOI 10.6039/j.issn.1001-0408.2019.04.14
摘 要 目的:观察新型小分子激酶抑制剂Ibr-7[依鲁替尼(Ibr)衍生物]对人胰腺癌Capan-2 细胞的抑制作用及其可能机制。方
法:以Capan-2细胞为对象,采用CCK-8法检测1、2、4、8 μmol/L Ibr、Ibr-7作用48 h后的细胞增殖情况,计算细胞存活率;同法检测
1 μmol/L Ibr、Ibr-7对不同剂量吉西他滨/紫杉醇(均分别为0.062 5、0.125、0.25、0.5、1 μmol/L)的增敏作用。采用克隆形成试验检测
1、2、4 μmol/L Ibr、Ibr-7作用48 h后的细胞克隆形成情况,并记录细胞集落形成数量。采用流式细胞术或JC-1法检测2、4、8 μmol/L
Ibr-7 作用 24 或 16 h 后细胞凋亡情况和线粒体膜电位变化情况,并计算总凋亡率及细胞线粒体膜电位下降比例。采用 Western
blotting法检测细胞中相关凋亡蛋白[多聚二磷酸腺苷核糖聚合酶(PARP)、Noxa、Bcl-2、Bax、髓样细胞白血病1(Mcl-1)、B淋巴细
胞瘤xL(Bcl-xL)]的表达情况。结果:1、2、4、8 μmol/L Ibr、Ibr-7作用48 h后,细胞的存活率均显著下降,各剂量Ibr-7组均显著低于
同剂量Ibr组,且Ibr-7的半数抑制浓度显著低于Ibr(P<0.05或P<0.01)。联用Ibr、Ibr-7后,细胞的存活率均显著低于同剂量吉西
他滨/紫杉醇单用组,且Ibr-7联用组显著低于同剂量Ibr联用组(P<0.05或P<0.01)。经2、4 μmol/L Ibr以及1、2、4 μmol/L Ibr-7作
用48 h后,细胞集落形成数量均显著减少,且各剂量Ibr-7组均显著低于同剂量Ibr组(P<0.01)。经不同剂量Ibr-7作用24或16 h
后,Capan-2 细胞的总凋亡率(2、4、8 μmol/L 组)、细胞线粒体膜电位下降比例(8 μmol/L 组)以及 Noxa(2、4、8 μmol/L 组)、Bax(8
μmol/L组)蛋白的相对表达量均显著上升,PARP(8 μmol/L组)、Bcl-2(4 μmol/L组)、Mcl-1(2、4、8 μmol/L组)蛋白的相对表达量均
显著下降,且8 μmol/L Ibr-7组上述指标(PARP、Bcl-2相对表达量除外)均显著优于同剂量Ibr组(P<0.05或P<0.01)。而各组细
胞Bcl-xL蛋白的相对表达量差异均无统计学意义(P>0.05)。结论:与Ibr相比,Ibr-7对人胰腺癌Capan-2细胞具有更强的体外增
殖抑制作用和促凋亡作用,且具有更强的化疗药物增敏活性;其作用机制可能与降低细胞线粒体膜电位,下调细胞中 PARP、
Bcl-2、Mcl-1蛋白的表达,上调Noxa、Bax蛋白的表达有关。
关键词 依鲁替尼;依鲁替尼衍生物;人胰腺癌Capan-2 细胞;增殖;凋亡;线粒体膜电位;凋亡相关蛋白
Study on the Inhibitory Effects and Mechanism of New Small Molecular Kinase Inhibitors Ibr-7 on
Human Pancreatic Cancer Capan-2 Cells
1
YAN Youyou ,ZHANG Bo ,ZHANG Qi ,ZHOU Dongmei ,LIN Nengming (1. Dept. of Transformational
1
1,2
2
2
Medicine Research Center,Hangzhou First People’s Hospital Affiliated to Zhejiang University School of
Medicine,Hangzhou 310006,China;2. Dept. of Transformational Medicine Research Center,Hangzhou First
Hospital Affiliated to Nanjing Medical University,Hangzhou 310006,China)
ABSTRACT OBJECTIVE:To observe the inhibitory effects and possible mechanism of new small molecular kinase inhibitors
Ibr-7 [Irutinil(Ibr)derivatives] on human pancreatic cancer Capan-2 cells. METHODS:Taking Capan-2 cells as objects,CCK-8
method was used to determine the proliferation of cells after treated with 1,2,4,8 μmol/L Ibr/Ibr-7 for 48 h. The survival rates of
cells were calculated. Sensitization effects of 1 μmol/L Ibr/Ibr-7 on different doses of gemcitabine/paclitaxel(0.062 5,0.125,0.25,
0.5,1 μmol/L)were detected. Clone formation test was used to detect the situation of cell clone formation after treated with 1,2,
4 μmol/L Ibr/Ibr-7 for 48 h. The number of cell colony formation was recorded. Flow cytometry or JC-1 method was used to detect
the apoptosis of cells after treated with 2,4,8 μmol/L Ibr-7 for 24 or 16 h and the changes of mitochondrial transmembrane
potential;total apoptotic rate and the percentage of mitochondrial membrane potential decrease were calculated. Western blotting
was used to detect the expression of related apoptotic protein (PARP,Noxa,Bcl-2,Bax,Mcl-1,Bcl-xL). RESULTS:After
treated with 1,2,4,8 μmol/L Ibr/Ibr-7 for 48 h,the survival rates of cells were decreased significantly;those of Ibr-7 groups
were significantly lower than those of same-dose Ibr groups;
Δ 基金项目:杭州市省市共建医学重点学科建设计划项目(No.浙
卫办〔2018〕2号);杭州市医学重点学科建设补助资金资助项目(No.杭 IC50 of Ibr-7 was significantly lower than that of Ibr(P<0.05
卫计发〔2017〕68号、杭财社会〔2017〕20号) or P<0.01). After combined with Ibr/Ibr-7,the survival rate
*药师。研究方向:肿瘤药理学。电话 0571-56007664。E-mail: of cells was significantly lower than that of same-dose
you.881022@163.com gemcitabine/paclitaxel alone group,and the Ibr-7 combination
# 通信作者:主任药师,教授,博士生导师。研究方向:临床药理 group was significantly lower than same-dose Ibr combination
学、临床毒理学。电话:0571-56007809。E-mail:lnm1013@163.com group(P<0.05 or P<0.01). After treated with 2,4 μmol/L
中国药房 2019年第30卷第4期 China Pharmacy 2019 Vol. 30 No. 4 ·499 ·