期刊
JOURNAL OF LIPID RESEARCH
卷 51, 期 7, 页码 1886-1896出版社
ELSEVIER
DOI: 10.1194/jlr.M004978
关键词
BeWo cell; fatty acid uptake; acyl-CoA synthetase
资金
- Medical Faculty, University of Oslo
- Norwegian Research Council
- Johan Throne Holst Foundation
- Novo Nordic Foundation
- European Union (EU)
- Consortium for Research into Nuclear Receptors in Development and Aging
- South-Eastern Norway Regional Health Authority
- Norwegian Sudden Infant Death Association
Placental fatty acid transport and metabolism are important for proper growth and development of the feto-placental unit. The nuclear receptors, liver X receptors alpha and beta (LXR alpha and LXR beta), are key regulators of lipid metabolism in many tissues, but little is known about their role in fatty acid transport and metabolism in placenta. The current study investigates the LXR-mediated regulation of long-chain acyl-CoA synthetase 3 (ACSL3) and its functions in human placental trophoblast cells. We demonstrate that activation of LXR increases ACSL3 expression, acyl-CoA synthetase activity, and fatty acid uptake in human tropholast cells. Silencing of ACSL3 in these cells attenuates the LXR-mediated increase in acyl-CoA synthetase activity. Furthermore, we show that ACSL3 is directly regulated by LXR through a conserved LXR responsive element in the ACSL3 promoter. Our results suggest that LXR plays a regulatory role in fatty acid metabolism by direct regulation of ACSL3 in human placental trophoblast cells.-Weedon-Fekjaer, M. S., K. T. Dalen, K. Solaas, A. C. Staff, A. K. Duttaroy, and H. I. Nebb. Activation of LXR increases acyl-CoA synthetase activity through direct regulation of ACSL3 in human placental trophoblast cells. J. Lipid Res. 2010. 51: 1886-1896.
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