Abstract
We previously described a negative effect of xanthohumol (XN) upon placentation-related processes. We aimed to better characterize this effect by investigating the effect of XN upon the uptake of arachidonic acid (ARA), a crucial nutrient during pregnancy, by the HTR-8/SVneo human first-trimester extravillous trophoblast cell line and its relationship with the negative effect of XN upon placentation-related processes. Uptake of 14C-ARA (100 nM) was time dependent and inhibited by short-term (26 minutes) or long-term (24 hours) exposure to XN. Xanthohumol (24 hours; 5 μM) behaved as an uncompetitive inhibitor of 14C-ARA uptake; the mammalian target of rapamycin, tyrosine kinases, and c-Jun N-terminal kinases intracellular pathways were involved in this effect; and it markedly reduced long-chain acyl-CoA synthetase 1 messenger RNA levels. Moreover, the effects of XN (24 hours; 5 μM) upon cell proliferation, culture growth, migration, viability, and apoptosis index were prevented by high extracellular ARA but not by the peroxisome proliferator-activated receptor-γ (PPAR-γ) agonist rosiglitazone. We thus conclude that ARA is an essential nutrient regulating cell viability, proliferation, culture growth, migration, and apoptosis of HTR-8/SVneo cells and that the deleterious effects of XN involve inhibition of ARA cellular uptake but appears to be independent of PPAR-γ activation.
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Correia-Branco, A., Keating, E. & Martel, F. Arachidonic Acid Reverses Xanthohumol-Induced Insufficiency in a Human First-Trimester Extravillous Trophoblast Cell Line (HTR-8/SVneo Cells). Reprod. Sci. 25, 1394–1405 (2018). https://doi.org/10.1177/1933719117746762
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DOI: https://doi.org/10.1177/1933719117746762