Inferring the in vivo cellular program of developing bovine skeletal muscle from expression data

Hudson, Nicholas J., Lyons, Russell E., Reverter, Antonio, Greenwood, Paul L. and Dalrymple, Brian P. (2013) Inferring the in vivo cellular program of developing bovine skeletal muscle from expression data. Gene Expression Patterns, 13 3-4: 109-125. doi:10.1016/j.gep.2013.02.001


Author Hudson, Nicholas J.
Lyons, Russell E.
Reverter, Antonio
Greenwood, Paul L.
Dalrymple, Brian P.
Title Inferring the in vivo cellular program of developing bovine skeletal muscle from expression data
Formatted title
Inferring the in vivo cellular program of developing bovine skeletal muscle from expression data
Journal name Gene Expression Patterns   Check publisher's open access policy
ISSN 1567-133X
1872-7298
Publication date 2013-03-01
Year available 2013
Sub-type Article (original research)
DOI 10.1016/j.gep.2013.02.001
Volume 13
Issue 3-4
Start page 109
End page 125
Total pages 17
Place of publication Amsterdam, Netherlands
Publisher Elsevier BV
Language eng
Formatted abstract
We outline an in vivo cellular program of bovine longissimus muscle development inferred from expression data from 60 days post conception to 3 months postnatal. Analytic challenges included changes in cellular composition, ambiguous 'diagnostic' markers of cell type and contrasts between cattle human and mouse myogenesis. Nevertheless, the expression profiles of the myosin isoforms support slow and fast muscle fibres emanating from primary and secondary myogenesis respectively, while expression of the prenatal myosin subunits is down regulated prior to birth. Of the canonical pro-myogenic transcription factors (TF), MYF6 and MYF5 are negatively co-expressed, with MYF6 displaying higher expression in the post-natal samples and MYF5, MYOG, HES6 and PAX7 displaying higher expression in early development. A set of TFs (SIX1, EYA2 and DACH2) considered important in undifferentiated murine cells were equally abundant in differentiated bovine cells. An examination of mammalian regulators of fibre composition, muscle mass and muscle metabolism, underscored the roles of PPARGC1A, TGFβ signalling and the NHR4 Nuclear Hormone Receptors on bovine muscle development. Enriched among the most variably expressed genes from the entire data set were molecules regulating mitochondrial metabolism of carbohydrate (PDK4), fat (UCP3), protein (AGXT2L1) and high energy phosphate (CKMT2). The dramatic increase in the expression of these transcripts, which may enable the peri-natal transition to metabolic independence critical for new-born herbivores, provides surprising evidence for substantial developmental remodelling of muscle mitochondria and reflects changes in nutrient availability. Overall, despite differences in size, metabolism and physiology, the muscle structural subunit expression program appears very similar in ruminants, rodents and humans.
Keyword Epigenetic
Mitochondria
Muscle development
Transcription factors
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Veterinary Science Publications
 
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