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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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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 ·

