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壳聚糖氧化石墨烯负载冬凌草甲素对A549细胞增殖及凋亡的影

        响  Δ


        谢谭芳 ,朱小勇,黄天衍(广西中医药大学药学院/广西高校中药制剂共性技术研发重点实验室/现代中药制剂
              *
        工程技术研究中心,南宁 530022)


        中图分类号 R285.5;R943         文献标志码      A      文章编号     1001-0408(2021)13-1589-07
        DOI  10.6039/j.issn.1001-0408.2021.13.09

        摘  要   目的:研究壳聚糖氧化石墨烯载体(CS-GO)负载冬凌草甲素(CS-GO-oridonin)对人肺癌细胞A549增殖及凋亡的影响。
        方法:以 A549 细胞为对象,采用 CCK-8 法检测经不同质量浓度的 CS-GO(3、6、12、24、48 μg/mL)和负载了等质量冬凌草甲素的
        CS-GO-oridonin(3、6、12、24、48 μg/mL,以冬凌草甲素质量计,下同)作用后的细胞存活率,并计算CS-GO-oridonin的半数抑制浓
        度(IC50 );采用显微镜观察CS-GO和CS-GO-oridonin(均为32 μg/mL)作用2、4、10、24 h后的细胞形态,并采用荧光标记法观察细胞对
        CS-GO、冬凌草甲素、CS-GO-oridonin(均为32 μg/mL)的摄取情况;采用流式细胞术观察不同质量浓度CS-GO(16、32、64 μg/mL)
        和CS-GO-oridonin(16、32、64 μg/mL)作用后细胞的凋亡情况及细胞中活性氧(ROS)的含量,采用Western blot法检测细胞中抗凋
        亡相关蛋白[髓样细胞白血病1(Mcl-1)、Bax、Bak]蛋白的表达情况。结果:经不同质量浓度CS-GO作用后,细胞的存活率仍不低
        于 90%;经不同质量浓度 CS-GO-oridonin 作用后,细胞存活率呈下降趋势,且显著低于相同质量浓度的 CS-GO 组(P<0.01);
        CS-GO-oridonin的IC50为32.61 μg/mL。经CS-GO作用后,细胞形态未见明显改变;经CS-GO-oridonin作用后,细胞出现皱缩、成团
        脱落、悬浮物增多等现象;当细胞摄取冬凌草甲素和CS-GO-oridonin后,其荧光均较摄取CS-GO的细胞有所增强。与空白组比较,
        CS-GO 16、32、64 μg/mL组细胞的凋亡率和细胞中ROS含量、凋亡相关蛋白的表达水平均无显著变化(P>0.05);而CS-GO-oridonin
        16、32、64 μg/mL组细胞的凋亡率、细胞中ROS含量和Bax、Bak蛋白的表达水平均显著升高,Mcl-1蛋白的表达水平均显著降低,
        且上述指标水平均显著高于或低于同质量浓度 CS-GO 组(P<0.05)。结论:CS-GO 不会影响 A549 细胞的增殖及凋亡;CS-GO-
        oridonin对细胞有明显的抑制和促凋亡作用,这种作用可能与增加细胞中ROS的产生、调控凋亡相关蛋白的表达有关。
        关键词 壳聚糖氧化石墨烯载体;冬凌草甲素;A549细胞;增殖;凋亡

        Effects of Oridonin-loaded Chitosan Graphene Oxide on the Proliferation and Apoptosis of A549 Cells
        XIE Tanfang,ZHU Xiaoyong,HUANG Tianyan(School of Pharmacy, Guangxi University of TCM/Key
        Laboratory of Common Technology of Traditional Chinese Medicine Preparation in Universities of Guangxi/
        Modern Chinese Medicine Preparation Engineering Technology Research Center,Nanning 530022,China)

        ABSTRACT    OBJECTIVE:To study the effects of chitosan graphene oxide carrier (CS-GO) loaded with oridonin (CS-GO-
        oridonin) on the proliferation and apoptosis of human lung cancer A549 cells. METHODS:Taking A549 cells as objects,the
        survival rate of cells were detected by CCK-8 method after treated with different concentrations of CS-GO(3,6,12,24,48
        μg/mL)and CS-GO-oridonin loaded with same mass of oridonin(3,6,12,24,48 μg/mL,by the weight of oridonin,the same
        below). IC50 of CS-GO-oridonin was calculated. The cell morphology were observed by microscope after treated with CS-GO and
        CS-GO-oridonin(both 32 μg/mL)for 2,4,10,24 h. The uptake of CS-GO,oridonin,CS-GO-orionin(all 32 μg/mL)by cells
        was observed with fluorescence labeling method. The apoptosis of cells and the content of ROS were observed by flow cytometry
        after treated with different concentrations of CS-GO(16,32,64 μg/mL)and CS-GO-oridonin(16,32,64 μg/mL). The expression
        of anti-apoptosis related proteins(Mcl-1,Bax and Bak)were detected by Western blot. RESULTS:After treated with different
        concentrations of CS-GO, the survival rate of cells was still above 90% ; after treated with different concentrations of
        CS-GO-oridonin,the survival rate of cells showed a downward trend,and was significantly lower than that of CS-GO group(P<
        0.01);IC50 of CS-GO-oridonin was 32.61 μg/mL. After CS-GO treatment,the cell morphology did not change significantly;after
        CS-GO-oridonin treatment,the cells shrunk and fell off in clusters,and the suspended matter increased;the fluorescence of
        oridonin and CS-GO-orionin taken up by cells was enhanced than CS-GO. Compared with blank group,there was no significant
        change in the apoptosis rate,the content of ROS and the expression of apoptosis-related protein in 16,32,64 μg/mL CS-GO
                                                           groups (P>0.05);apoptosis rate,the content of ROS,the
            Δ 基金项目:广西高校中青年教师基础能力提升项目(No.
                                                           protein expression of Bax and Bak in 16,32,64 μg/mL CS-
        2017KY0292);广西高校中药制剂共性技术研发重点实验室课题
       (No.70-ZJGX2017003)                                 GO-oridonin groups were increased significantly,while the
           *主管药师,硕士。研究方向:药物新剂型、新制剂的研发。电                    protein expression of Mcl-1 were decreased significantly.
        话:0771-4953513。E-mail:xietanfang111@163.com        Above indexes were significantly higher or lower than the


        中国药房    2021年第32卷第13期                                             China Pharmacy 2021 Vol. 32 No. 13  ·1589 ·
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