Growth and gene expression differ over time in alpha-linolenic acid treated breast cancer cells

Experimental Cell Research
Ashleigh K A WigginsLilian U Thompson

Abstract

Heterogeneity of breast cancer (BC) subtypes makes BC treatment difficult. α-linolenic acid (ALA), rich in flaxseed oil, has been shown to reduce growth and increase apoptosis in several BC cell lines, but the mechanism of action needs further understanding. Four BC cell lines (MCF-7, BT-474, MDA-MB-231 and MDA-MB-468) were incubated with 75 μM ALA+1 nM 17-β estradiol (E2) or 1 nM E2 only (control) for 24 h. MDA-MB-231 cells were additionally incubated at 6 and 12 h. Viable cell number was measured, and expression of genes related to BC (signaling pathways, cell cycle, apoptosis) was quantified by real-time PCR array. There was a reduction in growth of all ALA treated cell lines after 24 h, and in MDA-MB-231 cells this was time-dependent. Many genes were altered after 24 h, and these differed between cell lines. In MDA-MB-231 cells, several gene expression changes were time-dependent. ALA reduces growth of BC cell lines, by modifying signaling pathways, which differ between BC molecular subtypes. The ALA effect on gene expression is dynamic and changes over time, indicating the significance of incubation period in detecting gene changes.

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Citations

Mar 27, 2016·Seminars in Cancer Biology·Min Ji BakNanjoo Suh
Dec 19, 2018·Frontiers in Bioengineering and Biotechnology·Bruna Silveira PachecoClaudio Martin Pereira De Pereira
Sep 10, 2020·Toxicology Research·María José González-FernándezJosé Luis Guil-Guerrero
Feb 13, 2018·Experimental and Therapeutic Medicine·Oana ZanoagaIoana Berindan-Neagoe
Nov 30, 2020·Seminars in Cancer Biology·Marta FarràsOlga Castañer
Sep 24, 2021·Phytotherapy Research : PTR·Qianghua YuanLi Liu

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