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Article

Mouse Maternal High-Fat Intake Dynamically Programmed mRNA m6A Modifications in Adipose and Skeletal Muscle Tissues in Offspring

by 1,†, 1,†, 1, 2, 1 and 1,*
1
Creative Group of Muscle Biology & Genetic Improvement of Pigs, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
2
College of Life Sciences, Northwest A&F University, Yangling 712100, China
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Julian Borejdo
Int. J. Mol. Sci. 2016, 17(8), 1336; https://0-doi-org.brum.beds.ac.uk/10.3390/ijms17081336
Received: 7 July 2016 / Revised: 6 August 2016 / Accepted: 9 August 2016 / Published: 19 August 2016
(This article belongs to the Section Biochemistry)
Epigenetic mechanisms have an important role in the pre- and peri-conceptional programming by maternal nutrition. Yet, whether or not RNA m6A methylation—an old epigenetic marker receiving increased attention recently—is involved remains an unknown question. In this study, mouse high-fat feeding prior to conception was shown to induce overweight and glucose intolerant dams, which then continued to be exposed to a high-fat diet during gestation and lactation. The dams on a standard diet throughout the whole experiment were used as a control. Results showed that maternal high-fat intake impaired postnatal growth in male offspring, indicated by decreased body weight and Lee’s index at 3, 8 and 15 weeks old, but the percentages of visceral fat and tibialis anterior relative to the whole body weights were significantly increased at eight weeks of age. The maternal high-fat exposure significantly increased mRNA N6-methyladenosine (m6A) levels in visceral fat at three weeks old, combined with downregulated Fat mass and obesity-associated gene (FTO) and upregulated Methyltransferase like 3 (METTL3) transcription, and these changes were reversed at eight weeks of age. In the tibialis anterior muscle, the maternal high-fat diet significantly enhanced m6A modifications at three weeks, and lowered m6A levels at 15 weeks of age. Accordingly, FTO transcription was significantly inhibited at three weeks and stimulated at 15 weeks of age, and METTL3 transcripts were significantly improved at three weeks. Interestingly, both FTO and METTL3 transcription was significantly elevated at eight weeks of age, and yet the m6A modifications remained unchanged. Our study showed that maternal high-fat intake could affect mRNA m6A modifications and its related genes in offspring in a tissue-specific and development-dependent way, and provided an interesting indication of the working of the m6A system during the transmission from maternal nutrition to subsequent generations. View Full-Text
Keywords: maternal high-fat diet; m6A methylation; FTO; METTL3 maternal high-fat diet; m6A methylation; FTO; METTL3
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MDPI and ACS Style

Li, X.; Yang, J.; Zhu, Y.; Liu, Y.; Shi, X.; Yang, G. Mouse Maternal High-Fat Intake Dynamically Programmed mRNA m6A Modifications in Adipose and Skeletal Muscle Tissues in Offspring. Int. J. Mol. Sci. 2016, 17, 1336. https://0-doi-org.brum.beds.ac.uk/10.3390/ijms17081336

AMA Style

Li X, Yang J, Zhu Y, Liu Y, Shi X, Yang G. Mouse Maternal High-Fat Intake Dynamically Programmed mRNA m6A Modifications in Adipose and Skeletal Muscle Tissues in Offspring. International Journal of Molecular Sciences. 2016; 17(8):1336. https://0-doi-org.brum.beds.ac.uk/10.3390/ijms17081336

Chicago/Turabian Style

Li, Xiao, Jing Yang, Youbo Zhu, Yuan Liu, Xin’e Shi, and Gongshe Yang. 2016. "Mouse Maternal High-Fat Intake Dynamically Programmed mRNA m6A Modifications in Adipose and Skeletal Muscle Tissues in Offspring" International Journal of Molecular Sciences 17, no. 8: 1336. https://0-doi-org.brum.beds.ac.uk/10.3390/ijms17081336

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