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Published on: August 11, 2022
Role of β-Estradiol in MCF-7 Breast Cancer Cell Line Based on the Bioinformatics Analysis
Rong Wang1, Jinbin Li2, Chunyu Yin2
1National Research Institute for Health and Family Planning, Beijing, China.
Background:
This study aimed to investigate the action mechanism of β-estradiol in MCF-7 breast cancer (BC) cells.
Methods:
The cell samples were sequenced using Hiseq 2000, including 2 MCF-7 controls and 2 samples treated with β-estradiol. Differentially expressed genes (DEGs) were screened using the NOISeq package in R, followed by the functions and pathways analyses using Database for Annotation, Visualization and Integrated Discovery. DEGs associated with β-estradiol were selected using the WbeGestalt software, and the corresponding target miRNAs of these genes were analyzed from different miRNA databases. Additionally, protein-protein interaction network of the drug-associated genes was constructed using Cytoscape.
Results:
A total of 1,835 DEGs in BC samples were screened. Thereinto, DEGs associated with BC (17 upregulated and 28 downregulated DEGs) were involved in the regulation of cell proliferation, response to endogenous stimulus, and response to hormone stimulus, while the genes participated in several significant pathways. Cyclin D1, estrogen receptor 1, catechol-O-methyltransferase, and cathepsin D (CTSD; hub genes) were the predicted new genes associated with β-estradiol. Besides, hsa-miR-140-3p was the only target miRNA of CTSD.
Conclusion:
β-Estradiol may play a key role in contributing to BC progression and metastasis by regulating the expression of the selected genes.
Insights
Beta-estradiol influences breast cancer (BC) progression and metastasis by altering gene expression. This study identified key genes and microRNAs involved in BC regulation by beta-estradiol.
Area of Science:
- Molecular Biology
- Genomics
- Cancer Research
Background:
- Investigates the molecular mechanisms of beta-estradiol action in MCF-7 breast cancer cells.
- Addresses the need to understand hormone-driven breast cancer progression.
Purpose of the Study:
- To elucidate the action mechanism of beta-estradiol in breast cancer.
- To identify key genes and pathways regulated by beta-estradiol in MCF-7 cells.
Main Methods:
- RNA sequencing of MCF-7 cells treated with beta-estradiol.
- Differential gene expression analysis using NOISeq and WbeGestalt.
- Pathway and gene ontology analysis, miRNA target prediction, and protein-protein interaction network construction.
Main Results:
- Identified 1,835 differentially expressed genes (DEGs) in breast cancer samples.
- Found DEGs involved in cell proliferation, hormone response, and significant pathways.
- Identified hub genes including estrogen receptor 1 and cathepsin D (CTSD), with hsa-miR-140-3p as a target miRNA for CTSD.
Conclusions:
- Beta-estradiol plays a significant role in breast cancer progression and metastasis.
- Regulation of identified genes by beta-estradiol contributes to cancer development.
- Findings provide insights into potential therapeutic targets for hormone-driven breast cancer.
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