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RGD修饰的载多柔比星“核-壳”型纳米粒的制备、表征及其抗肿

          瘤作用研究
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          李庆龄 ,刘金光 ,祖 琦 ,于庆龙 ,孙士真(1.山东中医药高等专科学校中医系,山东 烟台 264199;2.烟台
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                 1*
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          药物研究所,山东 烟台 264000)
          中图分类号  R943;R979.1      文献标志码  A      文章编号  1001-0408(2025)16-2017-07
          DOI  10.6039/j.issn.1001-0408.2025.16.11

          摘  要  目的  制备精氨酰-甘氨酰-天冬氨酸(RGD)修饰的载多柔比星(DOX)“核-壳”型纳米粒(RGD@DOX-LPNs),并对其进行
          表征和抗肿瘤作用研究。方法  通过纳米沉淀法制备 RGD@DOX-LPNs,观察其外观和微观形态,检测其粒径、多分散性指数
         (PDI)、Zeta电位,并进行差示扫描量热、X射线衍射分析,检测其包封率和载药量,考察其稳定性,分析其体外释放情况、体外黏液
          扩散情况和肿瘤细胞摄取情况[以香豆素6(COU)定位]、体内组织分布及胃肠道滞留情况[以11-氯-1,1′-二正丙基-3,3,3′,3′-四
          甲基-10,12-三亚甲基吲哚三碳花青碘盐(IR780)定位]。以4T1荷瘤小鼠为对象,评价所得制剂对其瘤体体积、瘤重、细胞凋亡率
          的影响。结果  所制 RGD@DOX-LPNs 为橙色透明液体,其颗粒大小均一且近球形;纳米粒粒径为(159.67±8.02)nm,PDI 为
          0.15±0.06,Zeta电位为(-19.70±0.79)mV;经RDG修饰后,DOX的热吸收峰和晶型衍射峰均消失;RGD@DOX-LPNs的包封率
          为(72.65±4.37)%,载药量为(4.62±0.38)%;于4、25 ℃下放置7 d后的外观、粒径、包封率均无明显变化;其4 h的累积释放量约为
          73%,低于DOX原料药(1 h内近乎释放完全);COU-LPNs第1段薄片中COU的量显著低于同段RGD@COU-LPNs,而第2~5段
          薄片中 COU 的量则显著高于 RGD@COU-LPNs(P<0.01);肠细胞对 RGD@COU-LPNs 中 COU 的摄取量明显多于 COU-LPNs
         (P<0.05);RGD@IR780-LPNs的离体组织荧光强度均强于IR780-LPNs,且显示出更强的胃肠道滞留性。与DOX原料药及普通
          纳米粒(DOX-LPNs)比较,RGD@DOX-LPNs的抑瘤率更高(65.74%),并可使荷瘤小鼠瘤体体积显著缩小、瘤重显著降低、细胞凋
          亡率显著升高(P<0.01)。结论  成功制备了RGD@DOX-LPNs;该制剂具有一定的缓释作用,可增加肠细胞对DOX的摄取,增强
          DOX的胃肠道黏液滞留性和抗乳腺癌活性。
          关键词  多柔比星;RGD;脂质聚合物纳米粒;抗肿瘤作用

          Preparation and characterization of RGD modified “core-shell” nanoparticles loaded with doxorubicin and
          study on their anti-tumor effects
          LI Qingling ,LIU Jinguang ,ZU Qi ,YU Qinglong ,SUN Shizhen(1.  Dept.  of  Traditional  Chinese  Medicine,
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          Shandong  College  of  Traditional  Chinese  Medicine,  Shandong  Yantai  264199,  China;2.  Yantai  Institute  of
          Pharmaceutical Science, Shandong Yantai 264000, China)
          ABSTRACT   OBJECTIVE  To  prepare  Arg-Gly-Asp(RGD)-modified  doxorubicin (DOX)-loaded “core-shell”  nanoparticles
         (RGD@DOX-LPNs),  characterize  the  nanoparticles,  and  investigate  their  antitumor  effects.  METHODS  RGD@DOX-LPNs  were
          prepared using the nanoprecipitation method. Their morphology was examined by visual inspection and electron microscopy. Particle
          size,  polydispersity  index (PDI),  and  Zeta  potential  were  determined,  and  differential  scanning  calorimetry (DSC)  and  X-ray
          diffraction (XRD)  were  employed.  Encapsulation  efficiency (EE),  drug  loading (DL),  and  stability  were  evaluated. The  in  vitro
          release  kinetics,  mucus  diffusion,  and  tumor  cell  uptake  [tracked  using  coumarin  6 (COU)]  were  investigated.  The  in  vivo  tissue
          distribution  and  gastrointestinal  retention  [labeled  with  11-chloro-1, 1′-dipropyl-3, 3, 3′ , 3′-tetramethyl-10, 12-
          trimethyleneindotricarbocyanine iodide (IR780)] were investigated. Using 4T1 tumor-bearing mice as the experimental subjects, the
          effects  of  the  prepared  formulation  on  tumor  volume,  tumor  weight,  and  cell  apoptosis  rate  were  evaluated.  RESULTS
          RGD@DOX-LPNs presented as orange transparent liquid with uniform and near-spherical particles. The particle size was (159.67±
          8.02) nm, PDI was 0.15±0.06, and Zeta potential was (-19.70±0.79) mV. After modification with RGD, the thermal absorption
          peak  and  crystalline  diffraction  peak  of  DOX  disappeared.  EE  and  DL  of  RGD@DOX-LPNs  were (72.65±4.37)%  and (4.62±
                                                             0.38)% ,  respectively.  No  obvious  changes  in  appearance,
             Δ 基金项目 山东省医药卫生科技项目(No.202303111530)
             *第一作者 主治医师,讲师,硕士。研究方向:肿瘤免疫微环境、                  particle  size,  or  EE  were  observed  after  storage  at  4  ℃  and
          生殖内分泌与代谢性疾病。E-mail:liqingling@sdctcm.edu.cn        25  ℃  for  7  days.  The  cumulative  drug  release  at  4  h  was
             # 通信作者 工程师,硕士。研究方向:药物新型给药系统。E-                  approximately  73%,  which  was  lower  than  that  of  free  DOX
          mail:jgliu@simmyt.ac.cn                           (almost  completely  released  within  1  h).  The  amount  of  COU


          中国药房  2025年第36卷第16期                                              China Pharmacy  2025 Vol. 36  No. 16    · 2017 ·
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