Fatty acid transporter expression and regulation is impaired in placental macrovascular endothelial cells in obese women.

Fatty acid transporter expression and regulation is impaired in placental macrovascular endothelial cells in obese women.
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肥胖女性胎盘大血管内皮细胞中脂肪酸转运蛋白的表达和调节受损。

DOI:
10.1080/14767058.2017.1397119
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发表时间:
2019
期刊:
The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians
影响因子:
--
通讯作者:
O'Tierney-Ginn,Perrie
O'Tierney-Ginn,Perrie
中科院分区:
--
文献类型:
--
作者:
Yang,Xiaohua;Glazebrook,Patricia;Ranasinghe,GeraldineC;Haghiac,Maricela;Calabuig-Navarro,Virtu;Minium,Judi;O'Tierney-Ginn,Perrie

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目的:胎儿脂肪酸(FA)的输送最终由胎盘转运控制。焦点一直是母体-胎盘界面,但胎儿-胎盘界面的调节尚不清楚。方法:从瘦(孕前BMI<25kg/m2)和肥胖(体重指数(BMI) > 30)女性中分离胎盘大血管内皮细胞(EC)(n= 4/组)和滋养层细胞(TB)(n= 5/组)。在 EC 和 TB 中测量脂肪酸转运蛋白 FAT/CD36、FABPpm、FATP4、FABP 3、4 和 5、PLIN2 和 PPARα、δ、γ 表达。评估了转运蛋白对 24 小时棕榈酸酯 (PA) 的反应。结果:与瘦女性相比,肥胖女性的 EC 中 FABP3、4、5 和 PPARγ 的 mRNA 表达降低了 2 至 3 倍 (p<0.03),但在 TB 中则不然。肥胖者的 FABPpm 蛋白质水平降低 20% (p< .05)。棕榈酸酯 (PA) 在瘦但不肥胖的 EC 中上调 CD36、FABP3、FABP4 和 PLIN2 基因表达 3 至 4 倍 (p< .05),而 PA 增加瘦和肥胖 TB 中的 FABP4 和 PLIN2,以及瘦 EC 中的 FABP5 (p< .05)。在瘦和肥胖的 EC 中,PA 暴露使过氧化物酶体增殖物激活受体 (PPAR) 上调 2 倍 (p< .05),但在 TB 中则不然。结论:与瘦女性相比,在肥胖女性中,胎盘 EC 中 FA 转运蛋白的表达较低,但 TB 中则不然,并且对饱和 FA 的敏感性较低。 FA 运输可能在胎儿-胎盘界面受到调节。
Objective:Fetal fatty acid (FA) delivery is ultimately controlled by placental transport. Focus has been the maternal-placental interface, but regulation at the feto-placental interface is unknown.Methods:Placental macrovascular endothelial cells (EC) (n= 4/group) and trophoblasts (TB) (n= 5/group) were isolated from lean (pregravid BMI <25 kg/m2) and obese (body mass index (BMI) > 30) women. Fatty acid transporters FAT/CD36, FABPpm, FATP4, FABP 3, 4 and 5, PLIN2 and PPARα, δ, γ expression, was measured in EC and TB. Transporter response to 24 h palmitate (PA) was assessed.Results:mRNA expression of FABP3, 4, 5 and PPARγ was 2- to 3-fold reduced in EC of obese versus lean women (p< .03), but not in TB. Protein level of FABPpm was 20% lower in obese (p< .05). Palmitate (PA) up-regulated CD36, FABP3, FABP4, and PLIN2 gene expression by 3- to 4-fold in lean but not obese EC (p< .05), while PA increased FABP4 and PLIN2 in lean and obese TB, and FABP5 in lean (p< .05) EC. PA exposure up-regulated peroxisome proliferator activated receptors (PPARs) 2-fold in lean and obese EC (p< .05), but not in TB.Conclusions:In obese women, FA transporter expression is lower in placental EC, but not TB, and less sensitive to saturated FA, compared to lean women. FA transport may be regulated at the feto-placental interface.
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