Abstract
Background
The discovery of early warning signs and biomarkers in patients with early breast cancer is crucial for the prevention and treatment of breast cancer. Dynamic Network Biomarker (DNB) is an approach based on nonlinear dynamics theory, which we exploited to identify a set of DNB members and their key genes as early warning signals during breast cancer staging progression.
Methods
First, based on the gene expression profile of breast cancer in the TCGA database, the DNB algorithm was used to calculate the composite index (CI) of each gene cluster in the process of breast cancer anatomical staging. Then we calculated gene modules associated with the clinical phenotype stage based on weighted gene co-expression network analysis (WGCNA), combined with DNB membership to identify key genes in the network.
Results
We identified a set of gene clusters with the highest CI in Stage II as DNBs, whose roles in related pathways indicate the emergence of a tipping point and impact on breast cancer development. In addition, analysis of the key gene GPRIN1 showed that high expression of GPRIN1 predicts poor prognosis, and related immune analysis showed that GPRIN1 is involved in the development of breast cancer through immune aspects.
Conclusion
The discovery of DNBs and the key gene GPRIN1 can provide potential biomarkers and therapeutic targets for breast cancer.
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Data availability
All datasets analyzed in this study can be found in the TCGA database (https://portal.gdc.cancer.gov/), UCSC Xena database (http://xena.ucsc.edu/), GEO database (https://www.ncbi.nlm.nih.gov/gds), GTEx database (https://www.gtexportal.org) and TIMER2.0 database (http://timer.cistrome.org/).
Abbreviations
- DNB:
-
Dynamic network biomarker
- TCGA:
-
The Cancer Genome Atlas
- GEO:
-
Gene Expression Omnibus
- WGCNA:
-
Weighted gene co-expression network analysis
- CI:
-
Composite index
- GO:
-
Gene Ontology
- KEGG:
-
Kyoto Encyclopedia of Genes and Genomes
- FDR:
-
False discovery rate
- GSEA:
-
Gene Set Enrichment Analysis
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Funding
This work was supported by the National Natural Science Foundation of China (No. 31870932).
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All authors contributed to the study’s conception and design. Material preparation, data collection and analysis were performed by FJ. The first draft of the manuscript was written by FJ and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Jiang, F., Yang, L. & Jiao, X. Dynamic network biomarker to determine the critical point of breast cancer stage progression. Breast Cancer 30, 453–465 (2023). https://doi.org/10.1007/s12282-023-01438-5
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DOI: https://doi.org/10.1007/s12282-023-01438-5