Exploring Different Ultrasonic Parameters and Treatment Conditions to Optimize In Vitro Sonodynamic Therapeutic
Yilin Zheng1, Jun Wang1, Haijun Chen2
1Cancer Metastasis Alert and Prevention Center, and Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, College of Chemistry, Fuzhou University, Fuzhou, 350116, Fujian, China.
Abstract:
The effects of ultrasonic parameters and treatment conditions on the in vitro cellular experiments of sonodynamic therapy (SDT) have not been fully studied. Exploring the factors that affect the efficacy of SDT can provide a reference for screening effective sonosensitizers in vitro. The aim of this work is to investigate the factors that affected the SDT effects in cancer cells. Cancer cells in culture plates were exposed to ultrasound and sonosensitizers. The intracellular drug concentration was measured by using flow cytometry and the cell viability was determined by MTT assay. The SDT effects of cancer cells treated with different ultrasonic parameters under the same sonosensitizer concentration were different. The ultrasonic parameters, intracellular drug concentration, drug treatment time, cell amount, and cell status could affect the sonodynamic therapeutic effects. It is necessary to select appropriate ultrasound conditions and optimize the cellular status to make the results of the in vitro cellular experiments more reliable.
Insights
Optimizing ultrasound parameters and cell conditions is crucial for reliable sonodynamic therapy (SDT) in vitro. Understanding these factors enhances the efficacy of cancer cell treatment and sonosensitizer screening.
Area of Science:
- Biomedical Engineering
- Oncology
- Photochemistry
Background:
- Sonodynamic therapy (SDT) shows promise for cancer treatment, but its in vitro efficacy is influenced by various experimental factors.
- A comprehensive understanding of how ultrasonic parameters and cellular conditions affect SDT outcomes is lacking.
- Identifying key factors is essential for reliable in vitro screening of sonosensitizers and optimizing SDT protocols.
Purpose of the Study:
- To investigate the critical factors influencing sonodynamic therapy effects in cancer cells.
- To determine the impact of ultrasonic parameters, drug concentration, and cellular conditions on SDT efficacy.
- To provide a reference for optimizing in vitro cellular experiments for SDT research.
Main Methods:
- Cancer cells were cultured and exposed to ultrasound and sonosensitizers.
- Intracellular drug concentration was quantified using flow cytometry.
- Cell viability was assessed via MTT assay to evaluate therapeutic effects.
Main Results:
- Varying ultrasonic parameters significantly altered SDT effects even with consistent sonosensitizer concentrations.
- Key factors influencing SDT efficacy include ultrasonic parameters, intracellular drug concentration, treatment duration, cell density, and cell status.
- Different combinations of these factors led to distinct outcomes in cancer cell treatment.
Conclusions:
- Ultrasonic parameters and cellular conditions are critical determinants of in vitro sonodynamic therapy efficacy.
- Optimizing ultrasound conditions and ensuring consistent cellular status are necessary for reproducible and reliable experimental results.
- This study provides essential insights for the development and validation of novel sonosensitizers and SDT protocols.
