Fluid Flow Stimulation Modulates Expression of S100 Genes in Normal Breast Epithelium and Breast Cancer.

Autor: Fuh KF; Biomedical Engineering Graduate Program, University of Calgary, Calgary, AB T2N 1N4 Canada.; Cellular and Molecular Bioengineering Research Lab, University of Calgary, Calgary, AB T2N 1N4 Canada., Withell J; Cellular and Molecular Bioengineering Research Lab, University of Calgary, Calgary, AB T2N 1N4 Canada., Shepherd RD; Cellular and Molecular Bioengineering Research Lab, University of Calgary, Calgary, AB T2N 1N4 Canada.; Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, AB T2N 1N4 Canada., Rinker KD; Cellular and Molecular Bioengineering Research Lab, University of Calgary, Calgary, AB T2N 1N4 Canada.; Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, AB T2N 1N4 Canada.; Arnie Charbonneau Cancer Institute, University of Calgary, Calgary, AB T2N 1N4 Canada.; Department of Physiology and Pharmacology, University of Calgary, Calgary, AB T2N 1N4 Canada.; Libin Cardiovascular Institute of Canada, University of Calgary, Calgary, AB T2N 1N4 Canada.; Centre for Bioengineering Research & Education, University of Calgary, 2500 University Drive NW, Calgary, AB T2N 1N4 Canada.
Jazyk: angličtina
Zdroj: Cellular and molecular bioengineering [Cell Mol Bioeng] 2021 Oct 27; Vol. 15 (1), pp. 115-127. Date of Electronic Publication: 2021 Oct 27 (Print Publication: 2022).
DOI: 10.1007/s12195-021-00704-w
Abstrakt: Introduction: S100 proteins are intracellular calcium ion sensors that participate in cellular processes, some of which are involved in normal breast functioning and breast cancer development. Despite several S100 genes being overexpressed in breast cancer, their roles during disease development remain elusive. Human mammary epithelial cells (HMECs) can be exposed to fluid shear stresses and implications of such interactions have not been previously studied. The goal of this study was to analyze expression profiles of S100 genes upon exposing HMECs to fluid flow.
Methods: HMECs and breast cancer cell lines were exposed to fluid flow in a parallel-plate bioreactor system. Changes in gene expression were quantified using microarrays and qPCR, gene-gene interactions were elucidated using network analysis, and key modified genes were examined in three independent clinical datasets.
Results: S100 genes were among the most upregulated genes upon flow stimulation. Network analysis revealed interactions between upregulated transcripts, including interactions between S100P, S100PBP, S100A4, S100A7, S100A8 and S100A9. Overexpression of S100s was also observed in patients with early stage breast cancer compared to normal breast tissue, and in most breast cancer patients. Finally, survival analysis revealed reduced survival times for patients with elevated expression of S100A7 and S100P.
Conclusion: This study shows that exposing HMECs to fluid flow upregulates genes identified clinically to be overexpressed during breast cancer development, including S100A7 and S100P. These findings are the first to show that S100 genes are flow-responsive and might be participating in a fundamental adaptation pathway in normal tissue that is also active in breast cancer.
(© The Author(s) 2021.)
Databáze: MEDLINE
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