Omics · study · 2026
Estrogenic Endocrine Disrupting Compounds Increase Cell Proliferation and Cancer Stemness in Estrogen Receptor Positive Breast Cancer Cells
Listed in NCBI GEO
Estrogenic endocrine disrupting compounds (EDCs) found in plastics, drinking water, and food are able to bind to the estrogen receptor (ER).
Description
Excessive estrogen signaling drives proliferation, progression, and the formation of breast cancer stem cells (CSCs) in ER-positive breast cancer. Thus, we hypothesized that estrogenic EDCs mimic estrogen (E2) in breast cancer cell lines.
Three estrogenic EDCs routinely found in human biosamples were selected for analysis: bisphenol-A (BPA), diethyl-hexyl phthalate (DEHP), and alpha-zeranol (αZAL). We assessed proliferation, transcriptional reprogramming, and CSC formation in several breast cancer cell lines. E2, BPA, and αZAL significantly increased cell proliferation in ER-positive, but not in ER-negative cell lines.
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This was reversed with the administration of an ER-antagonist, ICI 182,780. BPA and αZAL upregulated estrogen target genes (PGR, TFF1) and increased levels of cell cycle protein. Whole-transcriptome RNA sequencing analysis revealed that BPA and αZAL altered the expression of genes in pathways related to cell division, DNA repair, and estrogen signaling, with a substantial transcriptional overlap between EDC and estrogen treatments.
Additionally, in the ER-positive cell line MCF-7, BPA and αZAL increased the proportion of CSCs, defined as the CD24low/CD44high expressing subpopulation. Overall, these data indicate that BPA and αZAL act as functional estrogen mimics in breast cancer cells, activating canonical estrogen signaling pathways and promoting stem-like characteristics. Exposure to EDCs is nearly unavoidable; therefore, understanding their estrogenic activities is crucial for assessing environmental contributions to breast cancer risk.
This work provides mechanistic insight into how environmental EDCs may influence ER-positive breast cancer biology.
Links
Get the data
- GEO FTP directory ftp.ncbi.nlm.nih.gov/geo/series/GSE311nnn/GSE311462 ↗
download · from NCBI GEO
Where it is published
- GEO accession page ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE311462 ↗
landing page · from NCBI GEO
Documentation and papers
- PRJNA1369499 ncbi.nlm.nih.gov/bioproject/PRJNA1369499 ↗
project · from NCBI GEO
- PubMed 42070278 pubmed.ncbi.nlm.nih.gov/42070278 ↗
publication · from NCBI GEO
Topics
- Stated by source
- Expression profiling by high throughput sequencing · Homo sapiens
- From keywords
- Life Sciences
- Inferred from text
- Cancer 75% · RNA sequencing 75% · Sequencing 75%
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NCBI GEO | GSE311462 | 13 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NCBI GEO | connector:ncbi_geo@1.0.0 | |
| concepts[disease].local:disease:cancer | enrichment · NCBI GEO | keyword-concept-rules@1.0.0 | title+description (75%) |
| concepts[field].local:field:life-sciences | mapping · NCBI GEO | connector:ncbi_geo@1.0.0 | |
| concepts[method].geo_series_type:expression-profiling-by-high-throughput-sequencing | source · NCBI GEO | connector:ncbi_geo@1.0.0 | /gdstype |
| concepts[modality].local:modality:rna-seq | enrichment · NCBI GEO | keyword-concept-rules@1.0.0 | title+description (75%) |
| concepts[modality].local:modality:sequencing | enrichment · NCBI GEO | keyword-concept-rules@1.0.0 | title+description (75%) |
| concepts[organism].NCBITaxon:9606 | source · NCBI GEO | connector:ncbi_geo@1.0.0 | /taxon |
| description | source · NCBI GEO | connector:ncbi_geo@1.0.0 | /summary |
| publication_date | source · NCBI GEO | connector:ncbi_geo@1.0.0 | |
| title | source · NCBI GEO | connector:ncbi_geo@1.0.0 | /title |