Project description:In this study, we used C3H/10T1/2 cells, a well known model of myogenic conversion, to study the effect of Six4 knockdown on the expression of genes during fibroblasts to myocytes conversion induced by ectopic expression of MyoD We established C3H/10T1/2 cell line with stable Six4 knockdown by short hairpin RNA (shSix4) vs a control cell line (shLuc) and converted these cells into myogenic lineage by retroviral transduction of plasmid encoding Flag-MyoD-myc (pBABE-MyoD) or empty plasmid (pBABE). Cells were then induced to differentiate for 24 hours before RNA extraction.
Project description:In this study, we used C3H/10T1/2 cells, a well known model of myogenic conversion, to study the effect of Six4 knockdown on the expression of genes during fibroblasts to myocytes conversion induced by ectopic expression of MyoD
Project description:Effects of YBX1 activation in PPARγ-indcuded C3H/10T1/2-SAM pre-adipocytes on the transcriptome of cells during early differentation stages
Project description:Growing evidence indicates that PPARγ agonists, such as rosiglitazone (RSG,), induce adipose mitochondrial biogenesis. Using microarrays, we systematically analyzed nucleus-encoded mitochondrial gene expression in two common murine adipocyte models, 3T3 L1 and C3H/10T1/2 adipocytes, and aimed to further establish the direct role of RSG, and capture the temporal changes in mitochondrial gene transcription during this process. Experiment Overall Design: Fully differentiated 3T3 L1 and C3H/10T1/2 adipocytes were treated with RSG, or DMSO vehicle for 1, 2, 4, 7, 24, and 48 hrs, and total RNA was extracted for microarray analysis.
Project description:Identification of the gene targets of the SIX transcription factors in myogenic stem cells and in whole back muscles during murine fetal development Pax7 expression marks stem cells in developing skeletal muscles and adult satellite cells during homeostasis and muscle regeneration. The genetic determinants that control the entrance into the myogenic program and the appearance of PAX7+ cells during embryogenesis are poorly understood. SIX homeoproteins are encoded by the Sine oculis homeobox related Six1-Six6 genes in vertebrates. Six1, Six2, Six4 and Six5 are expressed in the muscle lineage. Here we tested the hypothesis that Six1 and Six4 could participate in the genesis of myogenic stem cells. We show that fewer PAX7+ cells occupy a satellite cell position between the myofiber and its associated basal lamina in Six1 and Six4 (s1s4KO) at E18. However, PAX7+ cells are detected in remaining muscle masses present in the epaxial region of the double mutant embryos and are able to divide and contribute to muscle growth. To further characterize the properties of s1s4KO PAX7+ cells, we analyzed their transcriptome and tested their properties after transplantation in adult regenerating tibialis anterior (TA) muscle. Mutant stem cells form hypotrophic myofibers that are not innervated but retain the ability to self-renew.
Project description:Growing evidence indicates that PPARγ agonists, such as rosiglitazone (RSG,), induce adipose mitochondrial biogenesis. Using microarrays, we systematically analyzed nucleus-encoded mitochondrial gene expression in two common murine adipocyte models, 3T3 L1 and C3H/10T1/2 adipocytes, and aimed to further establish the direct role of RSG, and capture the temporal changes in mitochondrial gene transcription during this process. Keywords: Time course in two cell types
Project description:Ribosomes have been suggested to directly control gene regulation, however regulatory roles for ribosomal RNA (rRNA) remain largely unexplored. Expansion segments (ESs) consist of multitudes of tentacle-like rRNA structures extending from the core ribosome in eukaryotes. ESs are remarkably variable in sequence and size across eukaryotic evolution with a largely unknown function. In characterizing ribosome binding to a regulatory element within a Homeobox (Hox) 5’ UTR, we unexpectedly identify a modular stem-loop within this element that binds to a single ES, ES9S. Here, we described the raw data of the relative quantification proteomic analysis using tandem mass tag mass spectrometry of the ribonucleoprotein (RNP) complexes enriched from affinity pulldown of the 4xS1m-aptamer fusion constructs with the lysate components of C3H/10T1/2 cells and mouse embryo. 4xS1m pulldown is performed by combining mouse Hoxa9 mRNA elements (P3 and P4) with C3H/10T1/2 cell lysates, and by combining a9 IRES180 and an unrelated viral IRES with E11.5 FVB mouse embryo lysates. The aptamer alone served as a negative control. RNPs in the eluate were released by RNAse A treatment and were subjected to TMT 6plex labelling.