吉林大学学报(医学版) ›› 2025, Vol. 51 ›› Issue (5): 1260-1266.doi: 10.13481/j.1671-587X.20250512

• 基础研究 • 上一篇    

纳米药物PTX2 NPs的制备及其对人肺癌A549细胞的杀伤作用

薛晗1,范宇鑫1,张婷2,李智敏1,霍明歌1,关新刚1,3()   

  1. 1.北华大学医学技术学院临床检验系,吉林 吉林 132013
    2.浙江省温岭市第一人民医院呼吸内科,浙江 台州 317599
    3.台州学院医学院基础医学部,浙江 台州 318000
  • 收稿日期:2024-10-19 接受日期:2024-12-05 出版日期:2025-09-28 发布日期:2025-11-05
  • 通讯作者: 关新刚 E-mail:guanxg@ciac.ac.cn
  • 作者简介:薛 晗(1998-),女,吉林省通化市人,在读硕士研究生,主要从事用于肿瘤治疗创新药物方面的研究。
  • 基金资助:
    吉林省教育厅科研项目(JJKH20200033KJ);浙江省卫健委医药卫生科技计划项目(2024KY547);浙江省台州市抗癌协会肿瘤专项科研项目(TATA-C06)

Preparation of nanodrug PTX2 NPs and its killing effect on human lung cancer A549 cells

Han XUE1,Yuxin FAN1,Ting ZHANG2,Zhimin LI1,Mingge HUO1,Xingang GUAN1,3()   

  1. 1.Department of Clinical Laboratory Diagnostics,School of Medical Technology,Beihua University,Jilin 132013,China
    2.Department of Respiratory Medicine,First People’s Hospital,Wenling City,Zhejiang Province,Taizhou 317599,China
    3.Department of Basic Medicine,School of Medical Sciences,Taizhou College,Taizhou 318000,China
  • Received:2024-10-19 Accepted:2024-12-05 Online:2025-09-28 Published:2025-11-05
  • Contact: Xingang GUAN E-mail:guanxg@ciac.ac.cn

摘要:

目的 利用嵌段共聚物二硬脂酰基磷脂酰乙醇胺-聚乙二醇2000(DSPE-PEG2000)制备包裹紫杉醇二聚体(PTX2)的纳米药物PTX2纳米粒子(NPs),即PTX2 NPs,探讨PTX2 NPs对人肺癌A549细胞的杀伤效果及其对细胞凋亡的影响。 方法 利用纳米沉淀法制备PTX2 NPs,采用动态光散射法(DLS)检测其粒径分布,透射电子显微镜(TEM)观察PTX2 NPs的超微结构。在0和10 mmol·L-1 二硫苏糖醇(DTT)处理后,采用透析法检测PTX2 NPs体外释放情况。采用细胞计数试剂盒8(CCK-8)法检测不同浓度PTX2和PTX2 NPs(0.000 1、0.001 0、0.010 0、0.100 0和1.000 0 μmol·L-1)处理后各组A549细胞存活率。将A549细胞分为对照组、PTX2和PTX2 NPs组,采用细胞活/死染色法检测各组A549细胞生存情况,流式细胞术检测各组人肺癌A549细胞凋亡率。 结果 DLS检测,PTX2 NPs粒径为144.7 nm,TEM下呈均一圆球结构;PTX2 NPs能够在还原环境中持续释放紫杉醇(PTX),72 h累积释放率约为84%。CCK-8法,PTX2和PTX2 NPs均抑制A549细胞增殖且呈剂量依赖性。在PTX浓度<0.01 μmol·L-1时,与PTX2组比较,PTX2 NPs组A549细胞存活率明显降低(P<0.01或P<0.001)。活/死细胞染色法,与PTX2组比较,PTX2 NPs组红色荧光标记的死细胞数量增加。流式细胞术,与对照组和PTX2组比较,PTX2 NPs组A549细胞凋亡率明显升高(P<0.05或P<0.01)。 结论 成功制备包裹PTX2的纳米药物PTX2 NPs,能够响应性释放PTX,对人肺癌A549细胞具有较PTX2更明显的杀伤作用。

关键词: 紫杉醇二聚体, 纳米粒子, 肺腺癌, 药物递送, 细胞凋亡

Abstract:

Objective To prepare the nanodrug paclitaxel dimer(PTX2)-loaded nanoparticles(NPs) using the block copolymer 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-polyethylene glycol 2000,(DSPE-PEG2000), and to explore the killing effect of PTX2 NPs on the human lung cancer A549 cells and its influence on apoptotis. Methods The PTX2 NPs were prepared using nanoprecipitation method. Dynamic light scattering (DLS) was employed to determine the particle size distribution, and transmission electron microscope (TEM) was used to observe the ultrastructure of the nanoparticles. After treatment of 0 and 10 mmol·L-1 dithiothreitol (DTT), dialysis method was used to evaluate the in vitro drug release profile of PTX2 NPs. The cell counting kit-8(CCK-8) method was used to assess the survival rates of the A549 cells after treated with PTX2 and PTX2 NPs with different concentrations (0.000 1, 0.001 0, 0.010 0, 0.100 0, and 1.000 0 μmol·L-1). The A549 cells were divided into control group, PTX2 group, and PTX2 NPs group.Live/dead staining method was used to detect the survival of the A549 cells in various groups, and flow cytometry was used to detect the apoptotic rates of the A549 cells in various groups. Results The mean hydrodynamic diameter of PTX2 NPs was determined to be 144.7 nm by DLS. The TEM imaging confirmed uniform spherical morphology of PTX2 NPs. In a reductive environment, the PTX2 NPs exhibited continuous drug release with total paclitaxel(PTX) release of 84% within 72 h. The results of CCK-8 method showed that both PTX2 and PTX2 NPs inhibited the proliferation of A549 cells in a dose-dependent manner. When the concentrations of PTX<0.01 μmol·L-1, compared with PTX2 group,the survival rates of A549 cells in PTX2 NPs group were significantly decreased (P<0.01 or P<0.001). The live/dead staining results showed that compared with PTX2 group,the number of red fluorescence-labeled dead cells in PTX2 NPs group was increased. The flow cytometry results demonstrated that compared with control group and PTX2 group,the apoptotic rates of the A549 cells in PTX2 NPs group were significantly increased (P<0.05 or P<0.01). Conclusion The PTX2-loaded nanoparticles PTX2 NPs are successfully prepared which exhibits responsive drug release and demonstrates a more significant killing effect on the human lung cancer A549 cells compared to PTX2.

Key words: Paclitaxel dimer, Nanoparticle, Lung adenocarcinoma, Drug delivery, Apoptosis

中图分类号: 

  • R730.53