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ToolsYang, Xiaotao, Xu, Ping, Zhang, Fumei, Zhang, Li, Zheng, Yangxi, Hu, Mingyu, Wang, Lulu, Han, Ting Li, Peng, Chuan, Wang, Lianlian, Wen, Li, Zeng, Yiwen, Gao, Rufei, Xia, Yong, Tong, Chao, Yang, Zhu, Qi, Hongbo and Baker, Philip N. (2018) AMPK Hyper-Activation Alters Fatty Acids Metabolism and Impairs Invasiveness of Trophoblasts in Preeclampsia. Cellular Physiology and Biochemistry, 49 (2). pp. 578-594. ISSN 1015-8987
Full text not available from this repository. (Request a copy)Abstract
Background/Aims: Preeclampsia (PE) has long been assumed to be an ischemic disease of the placenta, although there is limited evidence as to how the ischemia impacts on the placenta. AMP-activated protein kinase (AMPK) is a key regulator of cellular energy metabolism and plays an important role in a variety of ischemic diseases by enhancing energy production. The present study investigated placental metabolism in PE, and the role of AMPK in regulating trophoblast function. Methods: placentas from normal and PE complicated pregnancies were subjected to GC-MS to identify fatty acids (FA) metabolic fingerprints, and total FA oxidation was assessed by malondialdehyde (MDA) measurement. The AMPK-ACC signaling pathway was assessed by q-PCR and Western Blotting. HTR8/SVneo trophoblast cultures were exposed to different oxygenation conditions to establish an in vitro PE cell model; further analysis by GC-MS for metabolite profiling was then undertaken. Trophoblasts invasion was assessed by a matrigel transwell assay in the presence/absence of AMPK expression and after manipulations of AMPK activity, and then further validated by human villi outgrowth experiments. Results: AMPK phosphorylation and MDA production were significantly elevated in placentas from pregnancies complicated by PE. Metabolism of cis double bond FA was inhibited while trans double bond FA metabolism was promoted in PE placentas. HTR8/SVneo cell culture conditions of persistent low oxygenation mimicked the hyper-activation of AMPK and enhanced the FA oxidation that was observed in PE. AMPK activation impaired trophoblast invasion, while AMPK inhibition promoted trophoblast invasion. Conclusion: PE complicated placentas are associated with AMPK hyper-activation and consequent alterations in FA oxidation, which inhibit trophoblast invasion.
| Item Type: | Article |
|---|---|
| Additional Information: | We thank Dr. C.H.Graham of Queen’s University, Canada, for the kind gift of HTR8/SVneo cells. |
| Uncontrolled Keywords: | ampk,fatty acids,metabolomics,placenta,preeclampsia,trophoblast,medicine(all),sdg 3 - good health and well-being ,/dk/atira/pure/subjectarea/asjc/2700 |
| Faculty \ School: | Faculty of Medicine and Health Sciences > Norwich Medical School |
| UEA Research Groups: | Faculty of Medicine and Health Sciences > Research Centres > Metabolic Health |
| Related URLs: | |
| Depositing User: | LivePure Connector |
| Date Deposited: | 16 Feb 2026 10:31 |
| Last Modified: | 16 Feb 2026 13:30 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/101941 |
| DOI: | 10.1159/000492995 |
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