Effect of cold atmospheric plasma (CAP) in MCF-7/TxR breast cancer cell [dataset 2]

Paclitaxel is a widely used therapeutic chemical for breast cancer treatment, however, cancer recurrence remains obstacle for improved prognosis of cancer patients. In the current study, cold atmospheric plasma (CAP) was examined for its potential use to overcome the drug resistance, which mainly comprised of reactive oxygen and nitrogen species. After developing a paclitaxel (Tx)-resistant MCF-7 (MCF-7/TxR) breast cancer cell, CAP was applied to the cells and its effect on recovery of drug sensitivity was examined in cellular as well as molecular aspect. The MCF-7/TxR cells restored sensitivity against Tx up to 70% by CAP. Comparison of genome-wide expression profiles between the Tx resistance cell and its CAP-treated cell identified 86 genes that commonly appeared with significant change. Notably, 48 genes including DAGLA and CEACAM1, which are known to contribute to the acquisition of Tx resistance, showed opposite expression in the two cellular status. The protein expression level of selected genes, DAGLA and CEACAM1, was recovered to that of their parental cell by CAP. Furthermore, the dysregulation of DAGLA and CEACAM1 in MCF-7/TxR alleviated the drug sensitivity recovery effect of CAP. Taken together, CAP inhibited the growth of Tx-resistant MCF-7 cancer cells and recovered Tx sensitivity by resetting expression of multiple drug resistance–related genes. These findings may contribute to extending the application of CAP to the treatment of Tx-resistant cancer. genom-wide expression profiling of MCF-7/TxR, MCF-7/TxR and CAP treated MCF-7/TxR cell. In result, cold atmospheric plasma different effect the CAP-treated MCF-7/TxR breast cancer cell. Total RNA is obtained from MCF-7/TxR and CAP treated MCF-7/TxR