http://jcps.bjmu.edu.cn

Journal of Chinese Pharmaceutical Sciences ›› 2021, Vol. 30 ›› Issue (11): 904-911.DOI: 10.5246/jcps.2021.11.078

• Original articles • Previous Articles     Next Articles

Preparation and characterization of pH-sensitive calcium carbonate-chlorin e6 nanoparticles for photodynamic therapy

Jingru Wang1,2, Shuang Zhang1,2, Zhuoyue Li1,2, Meiqi Xu1,2, Guangxue Wang1,2, Xuan Zhang1,2,*()   

  1. 1 Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China
    2 Department of Pharmaceutics, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China
  • Received:2021-05-19 Revised:2021-06-20 Accepted:2021-07-14 Online:2021-11-28 Published:2021-11-28
  • Contact: Xuan Zhang

Abstract:

In the present study, we combined CaCO3 NPs and Ce6 to construct CaCO3-Ce6 nanoparticles (NPs). CaCO3-Ce6 NPs were characterized in terms of particle size, zeta potential, UV-Vis absorption spectrum, fluorescence spectrum, FTIR spectrum, and pH-responsive behavior. The reactive oxygen species (ROS) generation in vitro was measured in 4T1 cells. The results showed that CaCO3-Ce6 NPs were uniform-sized NPs with excellent fluorescence properties and pH-responsive behavior. The ability of ROS generation by CaCO3-Ce6 NPs was stronger compared with Ce6 in 4T1 cells because Ca2+ could enhance the ROS generation, which could contribute to a stronger anti-tumor effect.

Key words: Calcium carbonate nanoparticles, Chlorin e6, Photodynamic therapy, Reactive oxygen species, pH-responsive

Supporting: