应用化学 ›› 2023, Vol. 40 ›› Issue (5): 730-742.DOI: 10.19894/j.issn.1000-0518.220384

• 研究论文 • 上一篇    下一篇

氟功能化胆碱磷酸脂质体用于胰岛素的口服给药

张元华1,2, 李晟冉1, 于喜飞1,2()   

  1. 1.中国科学院长春应用化学研究所,高分子物理与化学国家重点实验室,长春 130022
    2.中国科学技术大学,合肥 230026
  • 收稿日期:2022-11-23 接受日期:2023-03-27 出版日期:2023-05-01 发布日期:2023-05-26
  • 通讯作者: 于喜飞
  • 基金资助:
    国家自然科学基金(21674109)

Fluoride-Functionalized Choline Phosphate Liposomes for Oral Insulin Administration

Yuan-Hua ZHANG1,2, Sheng-Ran LI1, Xi-Fei YU1,2()   

  1. 1.State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Science,Changchun 130022,China
    2.University of Science and Technology of China,Hefei 230026,China
  • Received:2022-11-23 Accepted:2023-03-27 Published:2023-05-01 Online:2023-05-26
  • Contact: Xi-Fei YU
  • About author:xfyu@ciac.ac.cn
  • Supported by:
    the National Natural Science Foundation of China(21674109)

摘要:

皮下注射胰岛素(INS)作为治疗糖尿病主要的治疗方式, 存在使用抵触和低血糖等副作用, 而开发口服给药途径更具有应用前景。脂质体作为最成熟的药物递送体系, 在蛋白或多肽口服给药方面存在着稳定性差、载药率低和粘液渗透有限等问题。基于细胞膜骨架成分磷酸酰胆碱(PC)设计合成了三氟乙基修饰两性离子头部的二棕榈酰胆碱磷酸脂质分子(DPFCP),并构建了负载胰岛素口服给药的脂质体递送体系(INS@DPFCP)。对比二棕榈酰磷脂酰胆碱(INS@DPPC)和未功能化二棕榈酰胆碱磷酸(INS@DPCP)脂质体,系统地研究了INS@DPFCP理化性质、释放药物稳定性、粘液渗透性、生物相容性和细胞内吞效率及转运能力等。结果表明,INS@DPFCP的粒径为185 nm, 包封率为(47.1±3.9)%。相比于INS@DPPC(27.2%)和INS@DPCP(24.5%),INS@DPFCP粘液聚集量仅有17.15%。溶血和细胞毒性实验证明, INS@DPFCP具有良好的生物相容性,质量浓度高达1.2 mg/mL时, 溶血率为6.88%, 细胞存活率在90%以上。此外, 细胞摄取及转运测试表明,Caco-2细胞对INS@DPFCP具有更高的细胞摄取效率, 4 h的药物转运量达到47.5%。因此, INS@DPFCP可以满足口服递送的性质需求, 有望在糖尿病治疗中发挥重要作用, 在蛋白或多肽给药领域具有潜在的应用前景。

关键词: 胆碱磷酸脂质体, 氟功能化, 胰岛素, 口服给药

Abstract:

Subcutaneous insulin (INS) injection as the main therapy method for diabetes shows adverse effects such as inconvenient use and hypoglycemia. Fortunately, the oral route of administration of insulin possesses more application potential. As one of the most mature drug delivery systems, liposomes exist some disadvantages in the oral administration of proteins or peptides, such as poor stability, low drug load, and limited mucus penetration. Herein, according to the phosphocholine (PC) component of the cell membrane, choline phospholipid with trifluoroethyl modified zwitterionic head (DPFCP) is designed and synthesized for constructing liposomes delivery system loaded with insulin (INS@DPFCP) for oral administration. By comparison with phosphate choline liposomes (INS@DPPC) and unfunctionalized choline phosphate liposomes (INS@DPCP), the physicochemical properties, drug release stability, mucus permeability, biocompatibility, endocytosis, and transport ability of INS@DPFCP are studied. The test results indicate that the particle size of INS@DPFCP is 185 nm, and drug entrapment efficiency is (47.1±3.9)%. Compared with INS@DPPC (27.2%) and INS@DPCP (24.5%), the amount of mucus aggregation for INS@DPFCP is 17.15%. Hemolysis and cytotoxicity experiments show that INS@DPFCP gets good biocompatibility. When the mass concentration is as high as 1.2 mg/mL, the hemolysis rate is 6.88%, and the cell viability is above 90%. In addition, the endocytosis assay results demonstrate that INS@DPFCP is proved to be higher cellular uptake efficiency of Caco-2 cells, and the drug delivery accumulation reaches 47.5% in 4 h. INS@DPFCP is expected to play an important role in diabetes treatment, and shows potential application in the field of proteins or peptides oral administration.

Key words: Choline phosphate liposomes, Fluoride-functionalized, Insulin, Oral administration

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