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Updated: Jun 5, 2026
Introduction to the Ultrasound Targeted Microbubble Destruction Technique
Published on: June 12, 2011
Ultrasound-targeted microbubble destruction mediated herpes simplex virus-thymidine kinase gene treats hepatoma in
Shiji Zhou1, Shengwei Li, Zuojin Liu
1Department of Hepatobiliary Surgery, Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Yuzhong District, Chongqing 400010, PR China.
Objective:
The purpose of the study was to explore the anti-tumor effect of ultrasound -targeted microbubble destruction mediated herpes simplex virus thymidine kinase (HSV-TK) suicide gene system on mice hepatoma.
Methods:
Forty mice were randomly divided into four groups after the models of subcutaneous transplantation tumors were established: (1) PBS; (2) HSV-TK (3) HSV-TK+ ultrasound (HSV-TK+US); (4) HSV-TK+ultrasound+microbubbles (HSV-TK+US+MB). The TK protein expression in liver cancer was detected by western-blot. Applying TUNEL staining detected tumor cell apoptosis. At last, the inhibition rates and survival time of the animals were compared among all groups.
Results:
The TK protein expression of HSV-TK+MB+US group in tumor-bearing mice tissues were significantly higher than those in other groups. The tumor inhibitory effect of ultrasound-targeted microbubble destruction mediated HSV-TK on mice transplantable tumor was significantly higher than those in other groups (p < 0.05), and can significantly improve the survival time of tumor-bearing mice.
Conclusion:
Ultrasound-targeted microbubble destruction can effectively transfect HSV-TK gene into target tissues and play a significant inhibition effect on tumors, which provides a new strategy for gene therapy in liver cancer.
Insights
Ultrasound-targeted microbubble destruction effectively delivers the herpes simplex virus thymidine kinase (HSV-TK) gene to tumors. This method significantly inhibits hepatoma growth and improves survival time in mice.
Area of Science:
- Oncology
- Gene Therapy
- Medical Imaging
Background:
- Hepatoma poses a significant global health challenge.
- Gene therapy offers a promising avenue for cancer treatment.
- Targeted delivery systems are crucial for enhancing gene therapy efficacy.
Purpose of the Study:
- To investigate the anti-tumor effects of a novel gene therapy approach.
- To evaluate ultrasound-targeted microbubble destruction for delivering the herpes simplex virus thymidine kinase (HSV-TK) suicide gene system.
- To assess the efficacy of this system in a murine hepatoma model.
Main Methods:
- Establishment of subcutaneous hepatoma models in 40 mice.
- Random assignment into four groups: PBS, HSV-TK, HSV-TK+Ultrasound (US), and HSV-TK+US+Microbubbles (MB).
- Assessment of TK protein expression (Western blot), tumor cell apoptosis (TUNEL staining), tumor inhibition rates, and survival time.
Main Results:
- Significantly higher TK protein expression in the HSV-TK+US+MB group compared to other groups.
- Ultrasound-targeted microbubble destruction mediated HSV-TK demonstrated superior tumor inhibition in transplantable tumors (p < 0.05).
- This approach significantly improved the survival time of tumor-bearing mice.
Conclusions:
- Ultrasound-targeted microbubble destruction is an effective method for transfecting the HSV-TK gene into target tissues.
- This system exhibits a significant tumor inhibition effect on hepatoma.
- This strategy provides a novel approach for gene therapy in liver cancer treatment.
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