Int. J. Mol. Sci. 2008, 9(9), 1851-1862; doi:10.3390/ijms9091851
Article

Inhibition of Tissue Factor Expression in Brain Microvascular Endothelial Cells by Nanoparticles Loading NF-κB Decoy Oligonucleotides

1,2, 1,2,* email, 1,2, 1, 1 and 3
Received: 7 July 2008; in revised form: 30 August 2008 / Accepted: 10 September 2008 / Published: 18 September 2008
(This article belongs to the Section Material Sciences and Nanotechnology)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: To investigate a nuclear factor-kappa B decoy oligonucleotides strategy on the inhibition of tissue factor (TF) expression in cultured rat brain microvascular endothelial cells (BMECs) by polylactic acid (PLA) nanoparticles delivery system and to evaluate this new vector for in vitro gene therapy. Nanoparticles were formulated using poly D,L-polylactic acid with surface modifying by polysorbates 80. 3-[4,5-Dimethylthiazol-2,5-diphenyl- 2H-tetrazolium bromide] (MTT) assays showed that PLA nanoparticles were not toxic to the cultured BMECs.The decoy oligonuceotides (ODNs) loaded within nanoparticles was 6 μg/mg, encapsulation efficacy was (60.5±1.5)%. It was observed by flow cytometry that the cellular uptake of nanoparticles depended on the time of incubation and the concentration of nanoparticles in the medium. And confocal microscopy demonstrated that nanoparticles localized mostly in the BMECs cytoplasm. The released decoy oligonuceotides (ODNs) uptaked by BMECs retained their biologic activity and led to reduced level of tissue factor expression as compared to control cultures. These findings offer a potential therapeutic strategy in the control of TF expression in BMECs in vitro and suggest that PLA nanoparticles may be appropriate as delivery vehicles for decoy strategy in the gene therapy of cerebral thrombosis.
Keywords: Tissue factor; decoy oligonucleotides; nanoparticles; nuclear factor-kappaB; polylactic acid
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MDPI and ACS Style

Wang, H.; Hu, Y.; Guo, T.; Mei, H.; Zhang, X.; Sun, W. Inhibition of Tissue Factor Expression in Brain Microvascular Endothelial Cells by Nanoparticles Loading NF-κB Decoy Oligonucleotides. Int. J. Mol. Sci. 2008, 9, 1851-1862.

AMA Style

Wang H, Hu Y, Guo T, Mei H, Zhang X, Sun W. Inhibition of Tissue Factor Expression in Brain Microvascular Endothelial Cells by Nanoparticles Loading NF-κB Decoy Oligonucleotides. International Journal of Molecular Sciences. 2008; 9(9):1851-1862.

Chicago/Turabian Style

Wang, Huafang; Hu, Yu; Guo, Tao; Mei, Heng; Zhang, Xiaoping; Sun, Wangqiang. 2008. "Inhibition of Tissue Factor Expression in Brain Microvascular Endothelial Cells by Nanoparticles Loading NF-κB Decoy Oligonucleotides." Int. J. Mol. Sci. 9, no. 9: 1851-1862.

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