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ZHANG Wendian, CUI Jie, XIA Yifan, ZHANG Xin, DUAN Shaofeng. Synthesis of two folate conjugates and their targeting effect in vitro[J]. Journal of China Pharmaceutical University, 2021, 52(4): 447-454. DOI: 10.11665/j.issn.1000-5048.20210407
Citation: ZHANG Wendian, CUI Jie, XIA Yifan, ZHANG Xin, DUAN Shaofeng. Synthesis of two folate conjugates and their targeting effect in vitro[J]. Journal of China Pharmaceutical University, 2021, 52(4): 447-454. DOI: 10.11665/j.issn.1000-5048.20210407
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Synthesis of two folate conjugates and their targeting effect in vitro

  • 1.

    The First Affiliated Hospital of Henan University, Kaifeng 475001

  • 2.

    School of Pharmacy, Henan University, Kaifeng 475001, China

Funds: This study was supported by the Joint Construction Project of Henan Medical Science and Technology Research Project (No.2018020306); and the Program of Kaifeng Science and Technology Development Project (No.1903024)
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  • Received Date: January 13, 2021
  • Revised Date: May 10, 2021
    Graphical Abstract
    • Abstract
  • The aim of this study was to study the synthesis of two folate conjugates and their application in the preparation of folate targeted liposome, and to investigate their targeting effect in hepatocellular carcinoma HepG2 cell line in vitro. In this study, Folate-PEG-Cholesteryl hemisuccinate(Folate-PEG2000-CHEMS and Folate-PEG4000-CHEMS)were synthesized by linking folate and cholesterol succinate with two kinds of PEG materials. Structures of Folate-PEG2000-CHEMS and Folate-PEG4000-CHEMS were characterized by 1H NMR and ultra-high resolution mass spectrometry. Calcein was selected as the model drug, and calcein liposomes FA-PEG2000-L and FA-PEG4000-L were prepared by film dispersion method using Folate-PEG2000-CHEMS and Folate-PEG4000-CHEMS, respectively. The particle size and Zeta potential of FA-PEG2000-L and FA-PEG4000-L were measured by laser particle size analyzer. The drug delivery effect of FA-PEG2000-L and FA-PEG4000-L was evaluated by cellular uptake experiment in HepG2 cell line in vitro. Flow cytometry and laser confocal scanning microscope were used to determine fluorescence in HepG2 cells in vitro. The results showed that the average particle size of calcein liposome was (205.8 ± 10.2) nm, and the Zeta potential of calcein liposome was -(1.19 ± 0.31) mV.There was no significant difference in particle size and Zeta potential between FA-PEG2000-L and FA-PEG4000-L. The fluorescence intensity of FA-PEG4000-L liposome group was about 3.6 and 3.1 times higher than that of non-targeted liposome group and FA-PEG2000-L liposome group, with statistically significant difference (P < 0.01). The drug delivery efficiency of FA-PEG4000-L group in HepG2 cells was higher than that in FA-PEG2000-L and non-targeted groups, and the results indicated that Folate-PEG4000-CHEMS can promote the uptake of liposome by HepG2 cells in vitro. All in all, Folate-PEG4000-CHEMS could be applied in the preparation of folate targeted liposome, which could promote the uptake of liposome by HepG2 cells.
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    • References (18)
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