The role of fatty acid desaturase (FADS) genes in oleic acid metabolism: FADS1 Δ7 desaturates 11-20:1 to 7,11-20:2.

ABSTRACT:

Introduction

In mammals, FADS2 catalyzes "front-end" Δ4-, Δ6-, and Δ8-desaturation of fatty acyl chains, whereas FADS1 has Δ5-desaturase activity. Eighteen and 20-carbon precursors to highly unsaturated n-3 and n-6 fatty acids are the usual substrates for FADS1 and FADS2. Our main objective was to characterize the metabolic fate of oleic acid (OA) due to action of FADS gene products.

Methods

MCF-7 cells were stably transformed with either FADS1 or FADS2 or empty vector. A series of dose-response experiments were conducted with albumin-bound fatty acid substrates (18:1n-9 and 20:1n-9) provided in concentrations up to 100µM. Cells were harvested after 24h, after which FAME were prepared and analyzed by GC-FID and covalent adduct chemical ionization tandem mass spectrometry (CA

SUBMITTER: Park HG 

PROVIDER: S-EPMC5806126 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature