Cellular and Molecular Level Mechanisms against Electrochemical Cancer Therapy

Area of Science:

• Oncology
• Biophysics
• Cell Biology

Background:

• Electrochemical treatment (ECT) shows promise for tumor regression in clinical settings.
• Limited basic research exists on ECT's efficacy, dose-response, and cytotoxicity.
• Understanding the cellular mechanisms of ECT is crucial for its therapeutic development.

Purpose of the Study:

• To investigate the cellular mechanisms underlying the antitumor effects of electrochemical treatment (ECT).
• To provide fundamental research data on ECT's efficacy and biological impact.
• To evaluate ECT's dose-response relationship and cytotoxic effects on tumor cells.

Main Methods:

• Cell-level studies using Sarcoma-180, Scc-7, and Ehrlich Carcinoma tumor cells in mice.
• Measurement of intratumoral pH under varying ECT parameters (10mA for 150, 300, 600 seconds).
• Histological analysis of tumors post-ECT, including HE staining and apoptosis antibody staining at 6, 12, and 24 hours.

Main Results:

• Statistically significant reductions in tumor growth were observed in ECT groups compared to controls for Sarcoma and Scc-7 cells.
• Intratumoral pH significantly differed between anode and cathode sides, becoming acidic and alkaline, respectively.
• Histological examination revealed a significant increase in apoptosis 6 hours post-ECT, which then decreased.

Conclusions:

• ECT induces antitumor effects through mechanisms including significant pH changes and increased apoptosis.
• The study confirms ECT's efficacy in reducing tumor growth and weight.
• ECT is a viable and effective method for cancer treatment, supported by basic research data.