Page 74 - 《中国药房》2022年23期
P. 74

共载阿霉素与小干扰RNA的脂质介孔硅纳米粒的制备表征及抗

          多药耐药肿瘤细胞研究
                                              Δ

                                                          1, 3
          张梦玮    1, 2 * ,杨硕晔  1, 2 # ,杨亚南 ,王振威 ,屈凌波 (1.河南工业大学生物工程学院,郑州 450001;2.郑州
                                                1, 2
                                       1, 2
          市生物医药功能分子重点实验室,郑州 450001;3.郑州大学化学与分子工程学院,郑州 450001)

          中图分类号  R944.9;R979.1      文献标志码  A      文章编号  1001-0408(2022)23-2880-06
          DOI  10.6039/j.issn.1001-0408.2022.23.12

          摘   要  目的  制备共载阿霉素(DOX)与小干扰RNA(siRNA)的脂质介孔硅纳米粒(CLMSNs-SS-NH2@DOX/siRNA),并对其进
          行表征及抗多药耐药肿瘤细胞研究。方法  先以介孔硅纳米粒(MSNs)为基础制备 MSNs-SS-NH2@DOX,并以阳离子脂质体
         (CLs)对其包覆制得 CLMSNs-SS-NH2@DOX,进一步负载 siRNA 即得 CLMSNs-SS-NH2@DOX/siRNA。测定该制剂粒径及 Zeta
          电位,观察其微观形态并进行差示扫描量热分析、X射线衍射分析、红外光谱分析、物理吸附分析;测定该制剂在不同pH条件下
         (pH5.0、pH7.4)及不同谷胱甘肽浓度下(0、2、5、10 mmol/L)DOX的体外释放度;考察该制剂对耐DOX型乳腺癌细胞MCF-7/ADR
          摄取、迁移、凋亡、周期及P-糖蛋白(P-gp)表达的影响。结果  CLMSNs-SS-NH2@DOX/siRNA结构清晰,表面脂膜层明显,粒径为
         (197.63±3.75)nm,Zeta 电位为(20.64±0.98)mV,理化性质良好。体外释放结果显示,CLMSNs-SS-NH2@DOX/siRNA 具有良好
          的pH/还原双重响应释药特性。细胞实验结果显示,经CLMSNs-SS-NH2@DOX/siRNA干预后,MCF-7/ADR细胞的药物摄取显著
          增强,迁移率和P-gp表达水平均显著降低,总凋亡比例和G0/G1期所占比例均显著升高(P<0.05)。结论  本研究成功制备同时负
          载 DOX 和 siRNA 的 CLMSNs-SS-NH2@DOX/siRNA;该制剂理化性质良好,具有 pH/还原双重响应释药特性,且可通过下调 P-gp
          表达逆转 MCF-7/ADR细胞多药耐药。
          关键词  介孔硅;小干扰RNA;阿霉素;抗肿瘤;多药耐药

          Preparation  and  characterization  of  doxorubicin  and  siRNA  co-loaded  CLMSNs  and  study  on  anti-
          multidrug-resistant tumor cells
          ZHANG Mengwei ,YANG Shuoye ,YANG Yanan ,WANG Zhenwei ,QU Lingbo (1.  College  of
                                                                               1, 2
                                                            1, 2
                           1, 2
                                                                                             1, 3
                                            1, 2
          Biological  Engineering,Henan  University  of  Technology,Zhengzhou  450001,China;2.  Zhengzhou  Key  Lab  of
          Biomedical Functional Molecules,Zhengzhou 450001,China;3. College of Chemistry and Molecular Engineering,
          Zhengzhou University,Zhengzhou 450001,China)
          ABSTRACT    OBJECTIVE  To  prepare  lipid-coated  mesoporous  silica  nanoparticles (CLMSNs)  co-loaded  with  doxorubicin
         (DOX)  and  siRNA (CLMSNs-SS-NH2@DOX/siRNA),and  to  characterize  it  and  study  anti-multidrug-resistant  tumor  cells.
          METHODS MSNs-SS-NH2@DOX was prepared on the basis of mesoporous silica (MSNs),covered with cationic liposomes (CLs)
          to  synthesize  CLMSNs-SS-NH2@DOX,and  then  obtain  CLMSNs-SS-NH2@DOX/siRNA  by  co-loading  with  siRNA.  The  particle
          size  and  Zeta  potential  of  the  preparation  were  determined,and  its  micromorphology  was  observed;  differential  scanning
          calorimetry,X-ray  diffraction,infrared  spectroscopy  and  physical  adsorption  analysis  were  conducted.  The  in  vitro  release  of  DOX
          from the preparation was determined under different pH conditions (pH5.0,pH7.4) and different glutathione concentrations (0,2,5,
          10 mmol/L). The effects of this preparation on the uptake,migration,apoptosis,cycle and P-glycoprotein (P-gp) expression of MCF-7/
          ADR  in  DOX-resistant  breast  cancer  cells  were  investigated.  RESULTS  CLMSNs-SS-NH2@DOX/siRNA  had  a  clear  core-shell
          structure,obvious  lipid  membrane  layer,particle  size  of (197.63±3.75)  nm,Zeta  potential  of (20.64±0.98)  mV,and  with  good
          physical  and  chemical  properties.  In  vitro  release  results  showed  that  CLMSNs-SS-NH2@DOX/siRNA  possessed  good  pH/reduction
          double-response. The results of cell experiment showed that after intervened with CLMSNs-SS-NH2@DOX/siRNA,the fluorescence
          intensity of  MCF-7/ADR  cells  was  significantly enhanced,the  migration rate  and  P-gp  expression  level were  significantly reduced,
          while total proportion of apoptosis and that of G0/G1 phase were significantly increased (P<0.05). CONCLUSIONS In this study,
                                                              DOX  and  siRNA  co-loaded  CLMSNs-SS-NH2@DOX/siRNA  is
                                                              prepared  successfully,  which  has  good  physical  and  chemical
                Δ 基金项目 河 南 省 高 等 学 校 青 年 骨 干 教 师 培 养 计 划(No.
                                                              properties,  pH/reduction  double-response  properties.  It  can
          2020GGJS090);河南工业大学青年骨干教师培育计划(No.21420075)
                                                              reverse the multidrug resistance of MCF-7/ADR cells by down-
              *第一作者 硕士研究生。研究方向:新型抗肿瘤复合纳米药物
          递送系统 。E-mail:zmw15649858235@163.com                 regulation of P-gp expression.
               # 通信作者 副教授,硕士生导师。研究方向:功能性纳米材料与                 KEYWORDS    mesoporous  silica;  siRNA;  doxorubicin;  anti-
          药物递送系统。E-mail:yangshuoyecpu@163.com                 tumor; multidrug resistance


          · 2880 ·    China Pharmacy  2022 Vol. 33  No. 23                            中国药房  2022年第33卷第23期
   69   70   71   72   73   74   75   76   77   78   79