Effective Combination of Cold Physical Plasma and Chemotherapy Against Ewing Sarcoma Cells in Vitro

Overview

Journal Sci Rep

Specialty Science

Date 2024 Mar 19

PMID 38499701

Authors

Andreas Nitsch

Sara Qarqash

Sarah Romer

Janosch Schoon

Debora Singer

Sander Bekeschus

Axel Ekkernkamp

Georgi I Wassilew

Mladen V Tzvetkov

Lyubomir Haralambiev

Affiliations

Soon will be listed here.

Abstract

Ewing's sarcoma (ES) is the second most common bone tumor in children and adolescents and is highly malignant. Although the new chemotherapy has significantly improved the survival rate for ES from about 10 to 75%, the survival rate for metastatic tumors remains around 30%. This treatment is often associated with various side effects that contribute to the suffering of the patients. Cold physical plasma (CPP), whether used alone or in combination with current chemotherapy, is considered a promising adjunctive tool in cancer treatment. This study aims to investigate the synergistic effects of CPP in combination with cytostatic chemotherapeutic agents that are not part of current ES therapy. Two different ES cell lines, RD-ES and A673, were treated with the determined IC concentrations of the chemotherapeutic agents cisplatin and methotrexate (MTX) in combination with CPP. The effects on population doubling, cell viability, and apoptotic processes within these cell lines were assessed. This combination therapy has led to a reduction of population doubling and cell viability, as well as an increase in apoptotic activity in cells compared to CPP monotherapy. The results of this study provide evidence that combining CPP with non-common chemotherapy drugs such as MTX and CIS in the treatment of ES enhances the anticancer effects of these drugs. These findings open up new possibilities for the effective use of these drugs against ES.

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