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Abstract Title:

Polyunsaturated Fatty Acids Differentially Modulate Cell Proliferation and Endocannabinoid System in Two Human Cancer Lines.

Abstract Source:

Arch Med Res. 2017 Jan ;48(1):46-54. PMID: 28577869

Abstract Author(s):

Repossi Gastón, Pasqualini María Eugenia, Undurti N Das, Aldo R Eynard

Article Affiliation:

Repossi Gastón

Abstract:

BACKGROUND AND AIMS: Evidence suggests that quantity and quality of dietary polyunsaturated fatty acids (PUFAs) play a role in the development of cancer. However, the mechanisms involved in this interaction(s) are not clear. Endocannabinoids are lipid metabolites known to have growth modulatory actions. We studied the effect of supplementation with PUFAsω-6 and ω-3 (essential fatty acids, EFAs), saturated and monounsaturated fatty acids (non-EFAs) on the growth of tumor cells and modifications in their endocannabinoid content.

METHODS: Cell cultures of human glioblastoma (T98G) and breast cancer (MCF7) were supplemented with 50 or 100 mmol EFAs and non-EFAs for 72 h. Cell proliferation was then determined by MTT, anandamide (AEA) levels by HPLC, total fatty acids profiles by GLC, CB1 receptor expression by WB and FAAH activity by spectrophotometric method.

RESULTS: Fatty acids profile reflected the incorporation of the lipids supplemented in each assay. Arachidonic acid (EFAω-6) supplementation increased AEA levels and inhibited the growth of T98G, whereas palmitic acid (non-EFA) enhanced their proliferation. In breast cancer (MCF7) cells, eicosapentaenoic acid (EFA ω-3) reduced and oleic acid (non-EFA) enhanced their proliferation. CB1 expression was higher in T98Gand no differences were observed in FAAH activity.

CONCLUSIONS: The growth of tumor cells can be differentially modulated by fatty acids and, at least in part, can be attributed to their ability to act on the components of the endocannabinoid system.

Study Type : In Vitro Study

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Sayer Ji
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