PMID- 30670847 OWN - NLM STAT- MEDLINE DCOM- 20200601 LR - 20200601 IS - 1476-5497 (Electronic) IS - 0307-0565 (Linking) VI - 43 IP - 11 DP - 2019 Nov TI - Mice exposed to maternal androgen excess and diet-induced obesity have altered phosphorylation of catechol-O-methyltransferase in the placenta and fetal liver. PG - 2176-2188 LID - 10.1038/s41366-018-0314-8 [doi] AB - BACKGROUND/OBJECTIVES: Maternal obesity together with androgen excess in mice negatively affects placental function and maternal and fetal liver function as demonstrated by increased triglyceride content with dysfunctional expression of enzymes and transcription factors involved in de novo lipogenesis and fat storage. To identify changes in molecular pathways that might promote diseases in adulthood, we performed a global proteomic analysis using a liquid-chromatography/mass-spectrometry system to investigate total and phosphorylated proteins in the placenta and fetal liver in a mouse model that combines maternal obesity with maternal androgen excess. METHODS: After ten weeks on a control diet (CD) or high fat/high sugar-diet, dams were mated with males fed the CD. Between gestational day (GD) 16.5 and GD 18.5, mice were injected with vehicle or dihydrotestosterone (DHT) and sacrificed at GD 18.5 prior to dissection of the placentas and fetal livers. Four pools of female placentas and fetal livers were subjected to a global proteomic analysis. Total and phosphorylated proteins were filtered by ANOVA q < 0.05, and this was followed by two-way ANOVA to determine the effect of maternal obesity and/or androgen exposure. RESULTS: In placenta, phosphorylated ATP-citrate synthase was decreased due to maternal obesity, and phosphorylated catechol-O-methyltransferase (COMT) was differentially expressed due to the interaction between maternal diet and DHT exposure. In fetal liver, five total proteins and 48 proteins phosphorylated in one or more sites, were differentially expressed due to maternal obesity or androgen excess. In fetal liver, phosphorylated COMT expression was higher in fetus exposed to maternal obesity. CONCLUSION: These results suggest a common regulatory mechanism of catecholamine metabolism in the placenta and the fetal liver as demonstrated by higher phosphorylated COMT expression in the placenta and fetal liver from animals exposed to diet-induced maternal obesity and lower expression of phosphorylated COMT in animals exposed to maternal androgen excess. FAU - Fornes, Romina AU - Fornes R AD - Department of Physiology and Pharmacology, Karolinska Institutet, Solna, Sweden. FAU - Manti, Maria AU - Manti M AD - Department of Physiology and Pharmacology, Karolinska Institutet, Solna, Sweden. FAU - Qi, Xiaojuan AU - Qi X AD - Department of Physiology, Qiqihar Medical University, Qiqihar, China. FAU - Vorontsov, Egor AU - Vorontsov E AD - Proteomics Core Facility, University of Gothenburg, Gothenburg, Sweden. FAU - Sihlbom, Carina AU - Sihlbom C AD - Proteomics Core Facility, University of Gothenburg, Gothenburg, Sweden. FAU - Nystrom, Jenny AU - Nystrom J AD - Department of Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden. FAU - Jerlhag, Elisabet AU - Jerlhag E AD - Department of Pharmacology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden. FAU - Maliqueo, Manuel AU - Maliqueo M AD - Endocrinology and Metabolism, Faculty of Medicine, West division, University of Chile, Santiago, Chile. FAU - Hirschberg, Angelica Linden AU - Hirschberg AL AD - Division of Obstetrics and Gynecology, Karolinska University Hospital, Solna, Sweden. FAU - Carlstrom, Mattias AU - Carlstrom M AD - Department of Physiology and Pharmacology, Karolinska Institutet, Solna, Sweden. FAU - Benrick, Anna AU - Benrick A AD - Department of Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden. AD - School of Health and Education, University of Skovde, Skovde, Sweden. FAU - Stener-Victorin, Elisabet AU - Stener-Victorin E AUID- ORCID: 0000-0002-3424-1502 AD - Department of Physiology and Pharmacology, Karolinska Institutet, Solna, Sweden. elisabet.stener-victorin@ki.se. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190122 PL - England TA - Int J Obes (Lond) JT - International journal of obesity (2005) JID - 101256108 RN - 0 (Dietary Sugars) RN - 08J2K08A3Y (Dihydrotestosterone) RN - EC 2.1.1.6 (Catechol O-Methyltransferase) SB - IM MH - Animals MH - *Catechol O-Methyltransferase/chemistry/drug effects/metabolism MH - Diet, High-Fat MH - Dietary Sugars MH - Dihydrotestosterone/*pharmacology MH - Female MH - Fetus/drug effects/enzymology MH - *Liver/drug effects/enzymology MH - Male MH - Mice MH - Obesity/*metabolism MH - Phosphorylation/drug effects MH - *Placenta/drug effects/enzymology MH - Pregnancy EDAT- 2019/01/24 06:00 MHDA- 2020/06/02 06:00 CRDT- 2019/01/24 06:00 PHST- 2018/07/15 00:00 [received] PHST- 2018/12/19 00:00 [accepted] PHST- 2018/11/19 00:00 [revised] PHST- 2019/01/24 06:00 [pubmed] PHST- 2020/06/02 06:00 [medline] PHST- 2019/01/24 06:00 [entrez] AID - 10.1038/s41366-018-0314-8 [pii] AID - 10.1038/s41366-018-0314-8 [doi] PST - ppublish SO - Int J Obes (Lond). 2019 Nov;43(11):2176-2188. doi: 10.1038/s41366-018-0314-8. Epub 2019 Jan 22.