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·药学研究·


          靶头修饰对PEG-PCL胶束在人宫颈癌细胞内转运行为的影响
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          杨金津 ,于清华 ,于凌波 ,张亚东 ,梁冬芹 ,孙钰钰 ,王慧云 ,崔亚男 (1.山东第二医科大学药学院,
                                              2, 3
                                    1, 2
          山东 潍坊 261053;2. 济宁医学院药学院,山东 日照 276826;3. 山东第一医科大学药学院,山东 泰安
          271016)
          中图分类号  R943      文献标志码  A      文章编号  1001-0408(2024)12-1431-06
          DOI  10.6039/j.issn.1001-0408.2024.12.04
          摘  要  目的  研究转铁蛋白靶向肽 T7(7pep)对聚乙二醇-聚己内酯(PEG-PCL)胶束在人宫颈癌 HeLa 细胞内转运行为的影响。
          方法  以香豆素-6(C6)为荧光指示探针,通过薄膜分散法制备包载有 C6 的 PEG-PCL(PEG-PCL-C6)胶束以及靶头 7pep 修饰的
          PEG-PCL(7pep-PEG-PCL-C6)胶束。比较两种胶束的粒径、多分散指数及外观形态;比较两种胶束被HeLa细胞实时摄取的情况
          及其入胞后与早期内吞体(EE)、内吞循环室(ERC)、晚期内吞体(LE)的共定位情况。结果  PEG-PCL-C6和7pep-PEG-PCL-C6胶
          束的平均粒径分别为(75.0±2.3)、(82.0±1.5)nm,多分散指数分别为0.17±0.20、0.17±0.32,外观均为规整的圆球形。7pep-PEG-
          PCL-C6胶束的入胞速度和入胞量均明显快/多于PEG-PCL-C6胶束。7pep-PEG-PCL-C6胶束比PEG-PCL-C6胶束能够更快地进
          入 EE,而入胞后 PEG-PCL-C6 胶束进入 ERC 的速率较 7pep-PEG-PCL-C6 胶束快,且 PEG-PCL-C6 胶束和 7pep-PEG-PCL-C6 胶束
          在LE均有逐渐累积的趋势,但7pep-PEG-PCL-C6胶束入胞60 min时与LE的皮尔森系数、信号重叠比率、共定位比率均显著低于
          入胞 30 min 时(P<0.05 或 P<0.01)。结论  靶头 7pep 修饰可提高 PEG-PCL-C6 胶束的入胞速率和入胞量,还可改变其胞内转运
          行为。
          关键词  转铁蛋白靶向肽T7;胶束;转铁蛋白受体;靶向递送系统;细胞转运

          Effects  of  targeting  modification  on  intracellular  transportation  of  PEG-PCL  micelles  in  human  cervical
          cancer cells
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          YANG Jinjin ,YU Qinghua ,YU Lingbo ,ZHANG Yadong ,LIANG Dongqin ,SUN Yuyu ,WANG
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          Huiyun ,CUI Yanan (1.  School  of  Pharmacy,  Shandong  Second  Medical  University,  Shandong  Weifang
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          261053, China;2. School of Pharmacy, Jining Medical University, Shandong Rizhao 276826, China;3. School
          of Pharmacy, Shandong First Medical University, Shandong Tai’an 271016, China)
          ABSTRACT   OBJECTIVE  To  study  the  effects  of  transferrin-targeting  peptide  T7 (7pep)  on  intracellular  transportation  of
          polyethylene  glycol-polycaprolactone (PEG-PCL)  micelles  in  human  cervical  cancer  HeLa  cells.  METHODS  Using  coumarin-6
         (C6)  as  fluorescent  indicator  probe,  both  coumarin-6 (C6)-loaded  PEG-PCL (PEG-PCL-C6)  micelles  and  7pep-modified  PEG-
          PCL (7pep-PEG-PCL-C6) micelles were prepared by film-dispersion method. The particle size, polydispersity index and appearance
          morphology  were  compared  between  two  types  of  micelles;  the  real-time  uptake  of  two  types  of  micelles  by  HeLa  cells  was
          compared,  and  the  colocalization  of  two  types  of  micelles  with  early  endosomes (EE),  endocytic  recycling  compartments (ERC)
          and late endosomes (LE) after entry into the cells was observed. RESULTS The particle sizes of PEG-PCL-C6 and 7pep-PEG-PCL-
          C6  micelles  were(75.0±2.3)and(82.0±1.5)nm;  the  polymer  dispersity  indexes  were  0.17±0.20  and  0.17±0.32,  respectively,
          with  a  regular  spherical  appearance. The  colocalization  results  showed  that  entry  speed  and  amount  of  7pep-PEG-PCL-C6  micelles
          were significantly faster/more than those of PEG-PCL-C6 micelles. 7pep-PEG-PCL-C6 micelles entered EE faster than PEG-PCL-C6
          micelles,  while  PEG-PCL-C6  micelles  entered  ERC  at  a  faster  rate  than  7pep-PEG-PCL-C6  micelles,  and  both  PEG-PCL-C6
          micelles  and  7pep-PEG-PCL-C6  micelles  tended  to  accumulate  gradually  in  LE;  Pearson  coefficient,  signal  overlap  ratio,  and
          colocalization ratio of 7pep-PEG-PCL-C6 micelles with LE were significantly lower 60 minutes after entering the cell than those 30
                                                             minutes  after  entering  the  cell  (P<0.05  or  P<0.01).
             Δ 基金项目 国家自然科学基金项目(No.81903553);山东省自然
                                                             CONCLUSIONS  Targeting 7pep modification can increase the
          科学基金项目(No.ZR2017QH006);济宁医学院教育教学研究项目
                                                             entry  speed  and  amount  of  PEG-PCL-C6  micelles,  and  also
         (No.yb202223)
             * 第一作者 硕 士 研 究 生 。 研 究 方 向 :药 剂 学 。 E-mail:     alter their intracellular transportation behavior.
          yangjinjin0328@163.com                             KEYWORDS     transferrin-targeting  peptide  T7;  micelle;
             # 通信作者 副教授,硕士生导师,博士。研究方向:药物递送及机                 transferrin  receptor;  targeting  drug  delivery  system;  cellular
          制。E-mail:guancyn@sina.com                          transport


          中国药房  2024年第35卷第12期                                              China Pharmacy  2024 Vol. 35  No. 12    · 1431 ·
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