detection-rna-binding-proteins-vitro-rna-pull-down-adipocyte

Detection of RNA-binding Proteins by <em>In Vitro</em> RNA Pull-down in Adipocyte Culture

RNA-binding proteins (RBPs) are emerging as a regulatory layer in the development and function of adipose. RBPs play a key role in the gene expression ...

Duke-NUS Medical School

Microarray profiling has the potential to illuminate the molecular processes that govern the phenotypic characteristics of porcine skeletal muscles, such as hypertrophy or atrophy, and the expression of specific fibre types. This information is not only important for understanding basic muscle biology but also provides underpinning knowledge for enhancing the efficiency of livestock production.

Development of a porcine skeletal muscle cDNA microarray: analysis of differential transcript expression in phenotypically distinct muscles.

Little is known about the molecular changes in response to dietary restriction (energy and/or protein) in young growing skeletal muscles. To profile such changes and to gain insights into the signaling molecules that could mediate the diet effects, a dedicated porcine skeletal muscle cDNA-microarray approach was used to characterize differential muscle gene expression between conventionally fed and diet-restricted (20% less protein and 7% less energy) growing pigs, reared from 9 to 21 wk of age. In both red and white muscles, diet restriction resulted in the accumulation of significantly more intramuscular fat, and in the increased expression of genes involved in substrate (protein, glycogen, and lipid) turnover, in translation and mitochondrial function, and in raising glycolytic and oxidative phosphorylation potentials. The unexpected increase in intramuscular lipids in diet-restricted growing pigs could have important health implications for restricted diets in childhood. Despite reduced circulating insulin, more genes, including several novel growth modulatory genes, had higher expression levels, indicating that the cellular response to dietary restriction is an active process. One such responsive gene, P311, was most highly expressed in striated muscles and had a differentiation-dependent increase of expression in murine C2C12 cells, suggesting a role in differentiation/postdifferentiation phenotype determination.

Article	Year
Development of a porcine skeletal muscle cDNA microarray: analysis of differential transcript expression in phenotypically distinct muscles. BMC genomics\| PubMed ID: 12611633	2003
Restriction of dietary energy and protein induces molecular changes in young porcine skeletal muscles. The Journal of nutrition\| PubMed ID: 15333703	2004

Qianfan Bai

Biography

JoVE Journal Publications

Other Publications