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Differential Effects of Omega-3 and Omega-6 fatty Acids on Gene Expression in Breast Cancer Cells

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Abstract

Essential fatty acids have long been identified as possible oncogenic factors. Existing reports suggest omega-6 (ω-6) essential fatty acids (EFA) as pro-oncogenic and omega-3 (ω-3) EFA as anti-oncogenic factors. The ω-3 fatty acids, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), inhibit the growth of human breast cancer cells while the ω-6 fatty acids induces growth of these cells in animal models and cell lines. In order to explore likely mechanisms for the modulation of breast cancer cell growth by ω-3 and ω-6 fatty acids, we examined the effects of arachidonic acid (AA), linoleic Acid (LA), EPA and DHA on human breast cancer cell lines using cDNA microarrays and quantitative polymerase chain reaction. MDA-MB-231, MDA-MB-435s, MCF-7 and HCC2218 cell lines were treated with the selected fatty acids for 6 and 24 h. Microarray analysis of gene expression profiles in the breast cancer cells treated with both classes of fatty acids discerned essential differences among the two classes at the earlier time point. The differential effects of ω-3 and ω-6 fatty acids on the breast cancer cells were lessened at the late time point. Data mining and statistical analyses identified genes that were differentially expressed between breast cancer cells treated with ω-3 and ω-6 fatty acids. Ontological investigations have associated those genes to a broad spectrum of biological functions, including cellular nutrition, cell division, cell proliferation, metastasis and transcription factors etc., and thus presented an important pool of biomarkers for the differential effect of ω-3 and ω-6EFAs.

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Acknowledgements

This work is partially funded by a grant from the US Army Medical Research and Materiel Command, award number DAMD-17-01-1-0268

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Authors and Affiliations

  1. Division of Pathology, Walter Reed Army Institute of Research, 503 Robert Grant Road, Silver Spring, MD, 20910, USA

    Rasha Hammamieh, Nabarun Chakraborty, Stacy-Ann Miller, Edward Waddy, Mohsen Barmada, Rina Das & Marti Jett

  2. Division of Retrovirology, Walter Reed Army Institute of Research, 1600 East Gude Dr., Rockville, MD, 20850, USA

    Sheila A. Peel

  3. Microbiology Department, Howard University College of Medicine, 2400 Sixth Street, Washington, DC, NW, 20059, USA

    Agnes A. Day

Authors
  1. Rasha Hammamieh
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  2. Nabarun Chakraborty
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  3. Stacy-Ann Miller
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  4. Edward Waddy
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  5. Mohsen Barmada
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  6. Rina Das
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  7. Sheila A. Peel
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  8. Agnes A. Day
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  9. Marti Jett
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Corresponding author

Correspondence to Marti Jett.

Additional information

R. Hammamieh and N. Chakraborty contributed equally to this manuscript

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Hammamieh, R., Chakraborty, N., Miller, SA. et al. Differential Effects of Omega-3 and Omega-6 fatty Acids on Gene Expression in Breast Cancer Cells. Breast Cancer Res Treat 101, 7–16 (2007). https://doi.org/10.1007/s10549-006-9269-x

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  • DOI: https://doi.org/10.1007/s10549-006-9269-x

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