Project description:We use tag-based next generation sequencing analysis to quantify gene expression levels during myogenic differentiation and focused on the identifcation of novel 3' ends with DeepSAGE and novel 5' ends with DeepCAGE. Illumina DeepCAGE and DeepSAGE with C2C12 cells at time points T0 (proliferating) and T9 (differentiated) days of differentiation.
Project description:Mutations in genes involved in dNTP metabolism can lead to tissue-specific mitochondrial depletion syndromes (MDS), likely because the expression of key enzymes is reduced to critical levels in post mitotic cells. Our goal was to establish an in vitro skeletal muscle cell model to study the muscle specificity of MDS associated with mitochondrial dNTP pool imbalance. We performed a comprehensive analysis at the mRNA level of enzymes and transporters responsible for dNTP pool imbalance in muscle cells in vitro and in vivo. Agilent Mouse Oligo Arrays 4x44K were utilized to examine expression levels in proliferating and differentiated C2C12 cells as well as in the mouse EDL (fast glycolytic) and soleus (slow oxidative) muscles. The comparison of mRNA expression profiles supports the reliability of our in vitro cell system. Proliferating mouse C2C12 myoblasts were collected at about 50 percent confluence. Myoblasts were then induced to differentiate in vitro into myotubes that were harvested after 96 hours and further purified to reduce the contribution of mononucleated cells present in the culture. Gene expression in C2C12 myoblasts and myotubes was compared with fully differentiated muscle fibers in vivo. To this aim, the extensor digitorum longus (EDL) and soleus hind limb muscles were isolated from adult CD1 mice. These muscles were selected because they have different metabolic (glycolytic vs. oxidative) and twitching (fast vs. slow) properties. Triplicate total RNA samples were submitted to gene expression profiling.
Project description:Mouse C2C12 myoblasts were used to mimic skeletal muscle differentiation in vitro.Using RNA-seq and MeRIP-seq, we generated the tascriptome and epitranscriptome data of undifferentited C2C12 myoblasts in growth medium (GM) and differentiated myotubes in differentitation medium for 4 days (D4).