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Int. J. Mol. Sci. 2018, 19(2), 539; https://doi.org/10.3390/ijms19020539

Metabolic Effects of FecB Gene on Follicular Fluid and Ovarian Vein Serum in Sheep (Ovis aries)

1
Key Laboratory of Animal Genetics and Breeding and Reproduction of Ministry of Agriculture, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
2
College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
3
Tianjin Institute of Animal Sciences, Tianjin 300381, China
4
Metabolon, Inc., Morrisville, NC 27560, USA
5
Shanghai Applied Protein Technology Co., Ltd., Shanghai 200233, China
These authors contributed equally to this study.
*
Authors to whom correspondence should be addressed.
Received: 16 January 2018 / Revised: 5 February 2018 / Accepted: 6 February 2018 / Published: 11 February 2018
(This article belongs to the Special Issue Transcriptional Regulation in Lipid Metabolism)
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Abstract

The FecB gene has been discovered as an important gene in sheep for its high relationship with the ovulation rate, but its regulatory mechanism remains unknown. In the present study, liquid chromatography-mass spectrometry (LC-MS) and gas chromatography-mass spectrometry (GC-MS) techniques were adopted to detect the metabolic effects of FecB gene in follicular fluid (FF) and ovarian vein serum (OVS) in Small Tail Han (STH) sheep. ANOVA and random forest statistical methods were employed for the identification of important metabolic pathways and biomarkers. Changes in amino acid metabolism, redox environment, and energy metabolism were observed in FF from the three FecB genotype STH ewes. Principal component analysis (PCA) and hierarchical clustering analysis (HCA) showed that metabolic effects of FecB gene are more pronounced in FF than in OVS. Therefore, the difference of the metabolic profile in FF is also affected by the FecB genotypes. In Spearman correlation analysis, key metabolites (e.g., glucose 6-phosphate, glucose 1-phosphate, aspartate, asparagine, glutathione oxidized (GSSG), cysteine-glutathione disulfide, γ-glutamylglutamine, and 2-hydrosybutyrate) in ovine FF samples showed a significant correlation with the ovulation rate. Our findings will help to explain the metabolic mechanism of high prolificacy ewes and benefit fertility identification. View Full-Text
Keywords: FecB; follicular fluid; ovarian vein serum; metabolic profile; ovulation rate; sheep FecB; follicular fluid; ovarian vein serum; metabolic profile; ovulation rate; sheep
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Guo, X.; Wang, X.; Di, R.; Liu, Q.; Hu, W.; He, X.; Yu, J.; Zhang, X.; Zhang, J.; Broniowska, K.; Chen, W.; Wu, C.; Chu, M. Metabolic Effects of FecB Gene on Follicular Fluid and Ovarian Vein Serum in Sheep (Ovis aries). Int. J. Mol. Sci. 2018, 19, 539.

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