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The alteration of gene expression in fulvestrant resistant breast cancer cell by cold atmospheric plasma (CAP)

ABSTRACT: Cold atmospheric plasma (CAP) contributes to recovery of fulvestrant sensitivity in fulvestarnt resistant breast cancer cell.

ORGANISM(S): Homo sapiens

PROVIDER: GSE300391 | GEO | 2025/06/24

REPOSITORIES: GEO

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The alteration of gene expression in fulvestrant resistant breast cancer cell by cold atmospheric plasma (CAP)

Project description:The alteration of gene expression in fulvestrant resistant breast cancer cell by cold atmospheric plasma (CAP)

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Project description:Cold atmospheric plasma (CAP) has obtained credits for cancer treatment by its ability to preferentially induce cancer cell death, while its molecular mechanism is under elucidation. Here, an epigenetic effect of CAP on cancer cell was examined by performing a genome-wide ChIP-seq for H3K4me3 in the MCF-7 breast cancer cell.

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Effect of cold atmospheric plasma (CAP) in MCF-7 breast cancer cell [dataset 3]

Project description: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.

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Effect of cold atmospheric plasma (CAP) in MCF-7 breast cancer cells [dataset 1]

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Project description:Cold atmospheric pressure plasma (CAP) is known as a source of biologically active agents, such as reactive oxygen species (ROS) and reactive nitrogen species (RNS). Recent medical investigations have focused on applying CAP to cancer treatment. There is also growing evidence that exposure of cells to CAP or CAP-activated medium induces apoptosis in cancer cells, and ROS and/or RNS are considered to be effective agents to CAP-induced apoptosis. More recently, we demonstrated that Ar-CAP or Ar containing 2.5 % of N2 (Ar-N2-CAP) significantly induced apoptosis in human lymphoma U937 cells. However, a detailed molecular mechanism underling the induction of apoptosis by CAP in cancer cells is unclear. In the present study, to identify genes involved in the induction of apoptosis by CAP in human lymphoma U937 cells, global-scale gene expression analysis was performed using a GeneChip® system.

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