Abstract
Galbanic acid is a natural sesquiterpene coumarin compound with different biological
activities, particularly cytotoxicity against LNCaP (an androgen-dependent prostate
cancer cell line). Galbanic acid induces apoptosis in LNCaP via down-regulation of
androgen receptor. However, the poor water-solubility of galbanic acid limits further
in vitro and in vivo studies. In this study we present the synthesis of galbanic acid-coated Fe3O4 magnetic nanoparticles and their cytotoxicity evaluation on three prostate cancer
cell lines, including PC3 (an androgen-independent cell line), LNCaP, and DU145 (an
androgen-independent cell line). The synthesized nanoparticles were characterized
by X-ray diffraction spectroscopy, Fourier transform infrared spectroscopy, transmission
electron microscopy, scattering electron microscopy, energy-dispersive X-ray spectroscopy,
dynamic light scattering, and vibrating sample magnetometry. Our cytotoxicity evaluation
demonstrated that galbanic acid was cytotoxic only against LNCaP cells, while the
galbanic acid-coated Fe3O4 nanoparticles showed cytotoxicity on all tested cells, including androgen-dependent
and -independent cell lines. This indicates that other mechanisms are involved in
the cytotoxicity of galbanic acid in addition to androgen receptor down-regulation.
In conclusion, the loading of galbanic acid on the surface of Fe3O4 magnetic nanoparticles turned out to be a successful approach to enhance the solubility
and cytotoxicity of this compound.
Key words
Ferula assa-foetida
- Apiaceae - galbanic acid - prostate cancer - Fe
3O
4 magnetic nanoparticles - cytotoxicity