Cell-based chip for the detection of anticancer effect on HeLa cells using cyclic voltammetry.

Area of Science:

• Electrochemistry
• Cell Biology
• Biotechnology

Background:

• Assessing anticancer drug toxicity is crucial for effective cancer treatment.
• Current methods for evaluating drug-induced cytotoxicity can be time-consuming and complex.
• Developing rapid and sensitive methods for drug toxicity assessment is an ongoing challenge.

Purpose of the Study:

• To develop a direct cell immobilization technique on a gold-patterned silicon substrate.
• To utilize electrochemical methods for assessing the biological toxicity of anticancer drugs (hydroxyurea and cyclophosphamide) on HeLa cells.
• To establish a cell chip platform for drug detection and monitoring.

Main Methods:

• HeLa cells were directly immobilized on a gold-patterned silicon substrate.
• Cell immobilization was confirmed using optical microscopy.
• Cell viability and drug toxicity were analyzed using cyclic voltammetry and potentiometric stripping analysis.
• Trypan Blue dyeing was used to validate electrochemical results.

Main Results:

• Voltammetric analysis showed a linear relationship between peak current and HeLa cell number.
• Exposure to increasing concentrations of hydroxyurea and cyclophosphamide resulted in decreased cyclic voltammetry peak currents.
• Electrochemical findings correlated well with Trypan Blue staining results, indicating reduced cell viability upon drug exposure.

Conclusions:

• Direct cell immobilization on gold-patterned substrates provides a viable method for assessing anticancer drug toxicity.
• The developed electrochemical assay is sensitive to drug-induced changes in cell viability.
• This cell chip technology holds potential for applications in diagnostics, drug screening, and on-site monitoring.