Mechanisms of electrochemotherapy.

Area of Science:

• Oncology
• Biomedical Engineering
• Pharmacology

Background:

• Electrochemotherapy is an emerging therapeutic strategy.
• It facilitates intracellular delivery of non-permeant drugs with intracellular targets.
• This technique relies on localized, intense electric pulses to transiently permeabilize cells.

Purpose of the Study:

• To introduce and explain the principles of electrochemotherapy.
• To highlight its application in cancer treatment, particularly for tumor nodules.
• To discuss the mechanisms underlying its efficacy and its potential in clinical settings.

Main Methods:

• Application of short, intense electric pulses to tissues.
• Co-administration of non-permeant drugs with high intrinsic cytotoxicity (e.g., bleomycin, cisplatin).
• Evaluation of cellular and vascular effects, alongside host immune response.

Main Results:

• Demonstrated efficacy in preclinical tumor models.
• Successful enhancement of drug cytotoxicity (bleomycin, cisplatin) in vivo.
• Observed vascular effects and a complementary role of the host's immune system.

Conclusions:

• Electrochemotherapy is a feasible and effective method for cancer treatment.
• The technique leverages cell permeabilization, potent drugs, vascular effects, and immune response.
• Ongoing clinical trials indicate its potential for human application in oncology.