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Ultrasound exposure improves the targeted therapy effects of galactosylated docetaxel nanoparticles on hepatocellular carcinoma xenografts.

Wei H, Huang J, Yang J, Zhang X, Lin L, Xue E, Chen Z - PLoS ONE (2013)

Bottom Line: The copolymer MePEG-PLGA was used to prepare the galactosylated docetaxel nanoparticles (GDN), and the physical and chemical properties as well as the acute toxicity were then assayed.The median lethal dose of GDN was detected as 219.5 mg/kg which was about four times higher than that of docetaxel.In vivo, GDN intravenous injection combined with ultrasound exposure therapy achieved the best anti-tumor effect with a tumor growth inhibition rate of 74.2%, and the expression of Survivin and Ki67 were significantly decreased as well.

View Article: PubMed Central - PubMed

Affiliation: Department of Ultrasonography, Affiliated Union Hospital of Fujian Medical University, Fuzhou, China.

ABSTRACT

Purpose: The distribution of targeted nanoparticles in tumor tissue is affected by a combination of various factors such as the physicochemical properties of the nanoparticles, tumor hemoperfusion and tumor vascular permeability. In this study, the impact of the biological effects of ultrasound on nanoparticle targeting to liver carcinoma was explored.

Methods: The copolymer MePEG-PLGA was used to prepare the galactosylated docetaxel nanoparticles (GDN), and the physical and chemical properties as well as the acute toxicity were then assayed. The impact of ultrasound exposure (UE) on tumor hemoperfusion was observed by contrast-enhanced ultrasonography (CEUS), and the distribution of docetaxel in tumors and liver were detected by high performance liquid chromatography (HPLC). In the GDN combined with UE treatment group, the mice were injected intravenously with GDN, followed by ultrasound exposure on the human hepatocellular carcinoma xenografts. Twenty-eight days post-administration, the tumor growth inhibition rate was calculated, and the expression of Survivin and Ki67 in tumor tissues were determined by immunohistochemistry assay and quantitative real-time PCR.

Results: The mean size of prepared liver-targeting nanoparticles GDN was 209.3 nm, and the encapsulation efficiency was 72.28%. The median lethal dose of GDN was detected as 219.5 mg/kg which was about four times higher than that of docetaxel. After ultrasound exposure, the tumor peak - base intensity difference value, examined by CEUS, increased significantly. The drug content in the tumor was 1.96 times higher than in the GDN treated control. In vivo, GDN intravenous injection combined with ultrasound exposure therapy achieved the best anti-tumor effect with a tumor growth inhibition rate of 74.2%, and the expression of Survivin and Ki67 were significantly decreased as well.

Conclusion: Ultrasound exposure can improve targeting nanoparticles accumulation in the tumor, and achieve a synergism antitumor effect on the hepatocellular carcinoma xenografts.

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Related in: MedlinePlus

The growth curve of hepatocellular carcinoma xenografts.The tumor volume increased persistently in model group, while in all the docetaxel treated groups, the tumor volume increment was inhibited, especially in the GDN+UE group.
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pone-0058133-g005: The growth curve of hepatocellular carcinoma xenografts.The tumor volume increased persistently in model group, while in all the docetaxel treated groups, the tumor volume increment was inhibited, especially in the GDN+UE group.

Mentions: Hepatoma cell tumors grew continually following subcutaneous transplantation in nude mice. Compared to the model group, the tumor volumes were smaller in all the docetaxel treated groups, especially in the GDN+UE group (Figure 5).


Ultrasound exposure improves the targeted therapy effects of galactosylated docetaxel nanoparticles on hepatocellular carcinoma xenografts.

Wei H, Huang J, Yang J, Zhang X, Lin L, Xue E, Chen Z - PLoS ONE (2013)

The growth curve of hepatocellular carcinoma xenografts.The tumor volume increased persistently in model group, while in all the docetaxel treated groups, the tumor volume increment was inhibited, especially in the GDN+UE group.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3585934&req=5

pone-0058133-g005: The growth curve of hepatocellular carcinoma xenografts.The tumor volume increased persistently in model group, while in all the docetaxel treated groups, the tumor volume increment was inhibited, especially in the GDN+UE group.
Mentions: Hepatoma cell tumors grew continually following subcutaneous transplantation in nude mice. Compared to the model group, the tumor volumes were smaller in all the docetaxel treated groups, especially in the GDN+UE group (Figure 5).

Bottom Line: The copolymer MePEG-PLGA was used to prepare the galactosylated docetaxel nanoparticles (GDN), and the physical and chemical properties as well as the acute toxicity were then assayed.The median lethal dose of GDN was detected as 219.5 mg/kg which was about four times higher than that of docetaxel.In vivo, GDN intravenous injection combined with ultrasound exposure therapy achieved the best anti-tumor effect with a tumor growth inhibition rate of 74.2%, and the expression of Survivin and Ki67 were significantly decreased as well.

View Article: PubMed Central - PubMed

Affiliation: Department of Ultrasonography, Affiliated Union Hospital of Fujian Medical University, Fuzhou, China.

ABSTRACT

Purpose: The distribution of targeted nanoparticles in tumor tissue is affected by a combination of various factors such as the physicochemical properties of the nanoparticles, tumor hemoperfusion and tumor vascular permeability. In this study, the impact of the biological effects of ultrasound on nanoparticle targeting to liver carcinoma was explored.

Methods: The copolymer MePEG-PLGA was used to prepare the galactosylated docetaxel nanoparticles (GDN), and the physical and chemical properties as well as the acute toxicity were then assayed. The impact of ultrasound exposure (UE) on tumor hemoperfusion was observed by contrast-enhanced ultrasonography (CEUS), and the distribution of docetaxel in tumors and liver were detected by high performance liquid chromatography (HPLC). In the GDN combined with UE treatment group, the mice were injected intravenously with GDN, followed by ultrasound exposure on the human hepatocellular carcinoma xenografts. Twenty-eight days post-administration, the tumor growth inhibition rate was calculated, and the expression of Survivin and Ki67 in tumor tissues were determined by immunohistochemistry assay and quantitative real-time PCR.

Results: The mean size of prepared liver-targeting nanoparticles GDN was 209.3 nm, and the encapsulation efficiency was 72.28%. The median lethal dose of GDN was detected as 219.5 mg/kg which was about four times higher than that of docetaxel. After ultrasound exposure, the tumor peak - base intensity difference value, examined by CEUS, increased significantly. The drug content in the tumor was 1.96 times higher than in the GDN treated control. In vivo, GDN intravenous injection combined with ultrasound exposure therapy achieved the best anti-tumor effect with a tumor growth inhibition rate of 74.2%, and the expression of Survivin and Ki67 were significantly decreased as well.

Conclusion: Ultrasound exposure can improve targeting nanoparticles accumulation in the tumor, and achieve a synergism antitumor effect on the hepatocellular carcinoma xenografts.

Show MeSH
Related in: MedlinePlus