Project description:ER stress could affect many tissues, especially liver, in which non-alcoholic fatty liver disease, liver steatosis, etc. have been reported relative. But there still lack systematic insight into ER stress in liver, which can be obtained by transcriptomics of the tissue. Here, tunicamycin was utilized to induce ER stress in C57BL/6N mice. And microarray was performed to get the transcriptome alteration. Microarray of liver from tunicamycin-injected C57Bl/6N mice
Project description:To further development of our mRNA or lincRNA expression approach to ER stress, we have employed whole genome microarray expression profiling as a discovery platform to identify ER stress-responsible genes. Mouse embryonic fibroblasts (MEFs) deficient in each ER stress mediator (XBP1, ATF4, ATF6a or ATF6b) were treated with tunicamycin for 12 or 24 hrs. Genes responsible for tunicamycin in each mediator-dependent manner were extracted and categorized by Gene Ontology. Among them, expression of five ER-related genes (Derl1, Ssr3, Magt1, Bet1 and Mcfd2) was quantified in the RNA samples from COS7 cells by real-time PCR, confirming existence of similar mechanisms of trancriptional activation in ER stress by tunicamycin treatment.
Project description:To further development of our miRNA expression approach to ER stress, we have employed miRNA microarray expression profiling as a discovery platform to identify ER stress-responsible ones. Mouse embryonic fibroblasts (MEFs) deficient in a ER stress mediator XBP1 were treated with tunicamycin for 12 or 24 hrs. miRNAs responsible for tunicamycin-treatment for 12hrs in XBP1-dependent manner were extracted. Among them, expression of three miRNAs (miR-23a, miR-27a, miR-24-2) was quantified in the RNA samples from the same as the microarray, and COS7 cells by real-time PCR, confirming existence of similar mechanisms of trancriptional repression in ER stress by tunicamycin treatment.
Project description:To investigate the effect of aging on mitochondrial gene expression we isolated liver mitochondria from 4 12-week and 4 65-week C57BL/6N WT mice. We then isolated RNA and prepared the barcoded library using PCR-cDNA Barcoding Kit SQK-PCB109 and ran it on MinIOn R9.4.1 Flow cells.
Project description:To further development of our miRNA expression approach to ER stress, we have employed miRNA microarray expression profiling as a discovery platform to identify ER stress-responsible ones. Mouse embryonic fibroblasts (MEFs) deficient in a ER stress mediator ATF6b were treated with tunicamycin for 12 or 24 hrs. miRNAs responsible for tunicamycin-treatment for 12hrs in ATF6b-dependent manner were extracted. Among them, expression of three miRNAs (miR-15b, miR-20b, miR-92a) was quantified in the RNA samples from the same as the microarray by real-time PCR.
Project description:To further development of our miRNA expression approach to ER stress, we have employed miRNA microarray expression profiling as a discovery platform to identify ER stress-responsible ones. Mouse embryonic fibroblasts (MEFs) deficient in a ER stress mediator ATF6a were treated with tunicamycin for 12 or 24 hrs. miRNAs responsible for tunicamycin-treatment for 12hrs in ATF6a-dependent manner were extracted. Among them, expression of three miRNAs (miR-26a, miR-27b, miR-143) was quantified in the RNA samples from the same as the microarray by real-time PCR.
Project description:To further development of our miRNA expression approach to ER stress, we have employed miRNA microarray expression profiling as a discovery platform to identify ER stress-responsible ones. Mouse embryonic fibroblasts (MEFs) deficient in a ER stress mediator ATF4 were treated with tunicamycin for 12 or 24 hrs. miRNAs responsible for tunicamycin-treatment for 12hrs in ATF4-dependent manner were extracted. Among them, expression of three miRNAs (miR-193b, miR-423-5p, miR-199a-3p) was quantified in the RNA samples from the same as the microarray by real-time PCR.
Project description:To further development of our miRNA expression approach to ER stress, we have employed miRNA microarray expression profiling as a discovery platform to identify ER stress-responsible ones. Mouse embryonic fibroblasts (MEFs) deficient in a ER stress mediator XBP1 were treated with tunicamycin for 12 or 24 hrs. miRNAs responsible for tunicamycin-treatment for 12hrs in XBP1-dependent manner were extracted. Among them, expression of three miRNAs (miR-23a, miR-27a, miR-24-2) was quantified in the RNA samples from the same as the microarray, and COS7 cells by real-time PCR, confirming existence of similar mechanisms of trancriptional repression in ER stress by tunicamycin treatment. Mouse embryonic fibroblasts (MEFs) deficient in a ER stress mediator XBP1 were treated with 2ug/mL tunicamycin for 12 or 24 hrs. Two independent experiments were performed at each time (untreated, 12 or 24 hrs). miRNAs responsible for tunicamycin-treatment for 12hrs in XBP1-dependent manner were extracted.
Project description:To further development of our mRNA or lincRNA expression approach to ER stress, we have employed whole genome microarray expression profiling as a discovery platform to identify ER stress-responsible genes. Mouse embryonic fibroblasts (MEFs) deficient in each ER stress mediator (XBP1, ATF4, ATF6a or ATF6b) were treated with tunicamycin for 12 or 24 hrs. Genes responsible for tunicamycin in each mediator-dependent manner were extracted and categorized by Gene Ontology. Among them, expression of five ER-related genes (Derl1, Ssr3, Magt1, Bet1 and Mcfd2) was quantified in the RNA samples from COS7 cells by real-time PCR, confirming existence of similar mechanisms of trancriptional activation in ER stress by tunicamycin treatment. Mouse embryonic fibroblasts (MEFs) deficient in each ER stress mediator (XBP1, ATF4, ATF6a or ATF6b) were treated with 2ug/mL tunicamycin for 12 or 24 hrs. Two independent experiments were performed for each mediator-deficient MEF at each time (untreated, 12 or 24 hrs). Genes responsible for tunicamycin in each mediator-dependent manner were extracted and categorized by Gene Ontology in GeneRanker program of Genomatix platform.
Project description:To further development of our miRNA expression approach to ER stress, we have employed miRNA microarray expression profiling as a discovery platform to identify ER stress-responsible ones. Mouse embryonic fibroblasts (MEFs) deficient in a ER stress mediator ATF6a were treated with tunicamycin for 12 or 24 hrs. miRNAs responsible for tunicamycin-treatment for 12hrs in ATF6a-dependent manner were extracted. Among them, expression of three miRNAs (miR-26a, miR-27b, miR-143) was quantified in the RNA samples from the same as the microarray by real-time PCR. Mouse embryonic fibroblasts (MEFs) deficient in a ER stress mediator ATF6a were treated with 2ug/mL tunicamycin for 12 or 24 hrs. Two independent experiments were performed at each time (untreated, 12 or 24 hrs). miRNAs responsible for tunicamycin-treatment for 12hrs in ATF6a-dependent manner were extracted.