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Preparation and Sonodynamic Antitumor Effect of Protohemin‐Conjugated Multiwalled Carbon Nanotubes Functionalized with Carboxylic Group
Author(s) -
Wang Chuanjin,
Li Wei
Publication year - 2016
Publication title -
drug development research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.582
H-Index - 60
eISSN - 1098-2299
pISSN - 0272-4391
DOI - 10.1002/ddr.21303
Subject(s) - sonodynamic therapy , chemistry , nanomedicine , nuclear chemistry , conjugated system , drug delivery , carbon nanotube , potency , apoptosis , nanoparticle , nanotechnology , biochemistry , organic chemistry , materials science , in vitro , polymer
AbstractPreclinical ResearchSonodynamic therapy (SDT) is a cutting edge approach to treating cancer that involves necrosis and/or apoptosis. Multiwalled carbon nanotubes functionalized with carboxylic groups (MWCNTs‐COOH) due their physicochemical structure represent a novel drug delivery system in the field of nanomedicine. The purpose of the research reported in this paper was to increase the antitumor potency and reduce the potential side effects of protohemin (Ph), a sonosensitizer for SDT, which was noncovalently encapsulated into MWCNTs‐COOH (MWCNTs‐Ph). The Ph loading efficiency in MWCNTs‐COOH carrier was determined as approximately 68.8% (w/w). The growth inhibition rate of MWCNTs‐Ph (Ph: 180 μg/mL) was approximately 95 ± 8.5%, whereas Ph‐F (Ph: 180 μg/mL) inhibited 58 ± 4.5% of tumor cell. Ph (Ph: 180 μg/mL) alone had no antitumor effect in HepG‐2 cells using ultrasound treatment at 1.0 MHz and 0.5 W/cm 2 for 100 s. Assessment of the antitumor effects of MWCNTs‐Ph and Ph‐F at day 11 after SDT showed that he tumor inhibition ratio for MWCNTs‐Ph (6.18 × 10 −2 g·kg −1 ·d −1 ) was 82.8%, twice that of Ph‐F (6.18 × 10 −2 g·kg −1 ·d −1 ) ay 41.8%. In conclusion, MWCNTs‐Ph had increased antitumor efficiency and also decreased potential side effects. Drug Dev Res 77 : 152–158, 2016. © 2016 Wiley Periodicals, Inc.