Next Article in Journal
Circadian Rhythm Neuropeptides in Drosophila: Signals for Normal Circadian Function and Circadian Neurodegenerative Disease
Next Article in Special Issue
The Roles of Glutamine in the Intestine and Its Implication in Intestinal Diseases
Previous Article in Journal
The Metalloproteinase ADAM28 Promotes Metabolic Dysfunction in Mice
Previous Article in Special Issue
The Angiogenesis Inhibitor ALS-L1023 from Lemon-Balm Leaves Attenuates High-Fat Diet-Induced Nonalcoholic Fatty Liver Disease through Regulating the Visceral Adipose-Tissue Function
 
 
Article

A Systems Biology Approach Using Transcriptomic Data Reveals Genes and Pathways in Porcine Skeletal Muscle Affected by Dietary Lysine

Department of Animal and Dairy Sciences, Mississippi State University, Starkville, MS 39762, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Marica Bakovic
Int. J. Mol. Sci. 2017, 18(4), 885; https://doi.org/10.3390/ijms18040885
Received: 10 March 2017 / Revised: 8 April 2017 / Accepted: 18 April 2017 / Published: 21 April 2017
(This article belongs to the Special Issue Nutrigenomics of Risk Factors for Disease)
Nine crossbred finishing barrows (body weight 94.4 ± 6.7 kg) randomly assigned to three dietary treatments were used to investigate the effects of dietary lysine on muscle growth related metabolic and signaling pathways. Muscle samples were collected from the longissimus dorsi of individual pigs after feeding the lysine-deficient (4.30 g/kg), lysine-adequate (7.10 g/kg), or lysine-excess (9.80 g/kg) diet for five weeks, and the total RNA was extracted afterwards. Affymetrix Porcine Gene 1.0 ST Array was used to quantify the expression levels of 19,211 genes. Statistical ANOVA analysis of the microarray data showed that 674 transcripts were differentially expressed (at p ≤ 0.05 level); 60 out of 131 transcripts (at p ≤ 0.01 level) were annotated in the NetAffx database. Ingenuity pathway analysis showed that dietary lysine deficiency may lead to: (1) increased muscle protein degradation via the ubiquitination pathway as indicated by the up-regulated DNAJA1, HSP90AB1 and UBE2B mRNA; (2) reduced muscle protein synthesis via the up-regulated RND3 and ZIC1 mRNA; (3) increased serine and glycine synthesis via the up-regulated PHGDH and PSPH mRNA; and (4) increased lipid accumulation via the up-regulated ME1, SCD, and CIDEC mRNA. Dietary lysine excess may lead to: (1) decreased muscle protein degradation via the down-regulated DNAJA1, HSP90AA1, HSPH1, and UBE2D3 mRNA; and (2) reduced lipid biosynthesis via the down-regulated CFD and ME1 mRNA. Collectively, dietary lysine may function as a signaling molecule to regulate protein turnover and lipid metabolism in the skeletal muscle of finishing pigs. View Full-Text
Keywords: lysine; skeletal muscle; transcriptome; gene expression; microarray; pig lysine; skeletal muscle; transcriptome; gene expression; microarray; pig
Show Figures

Graphical abstract

MDPI and ACS Style

Wang, T.; Feugang, J.M.; Crenshaw, M.A.; Regmi, N.; Blanton, J.R., Jr.; Liao, S.F. A Systems Biology Approach Using Transcriptomic Data Reveals Genes and Pathways in Porcine Skeletal Muscle Affected by Dietary Lysine. Int. J. Mol. Sci. 2017, 18, 885. https://doi.org/10.3390/ijms18040885

AMA Style

Wang T, Feugang JM, Crenshaw MA, Regmi N, Blanton JR Jr., Liao SF. A Systems Biology Approach Using Transcriptomic Data Reveals Genes and Pathways in Porcine Skeletal Muscle Affected by Dietary Lysine. International Journal of Molecular Sciences. 2017; 18(4):885. https://doi.org/10.3390/ijms18040885

Chicago/Turabian Style

Wang, Taiji, Jean M. Feugang, Mark A. Crenshaw, Naresh Regmi, John R. Blanton Jr., and Shengfa F. Liao. 2017. "A Systems Biology Approach Using Transcriptomic Data Reveals Genes and Pathways in Porcine Skeletal Muscle Affected by Dietary Lysine" International Journal of Molecular Sciences 18, no. 4: 885. https://doi.org/10.3390/ijms18040885

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop