Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

MRLxSM eQTL in Liver by RMA on Ensembl transcripts

ABSTRACT: A QTL analysis between inbred mouse strains MRL/MpJ and SM/J was performed to identify genetic loci influencing high-density lipoprotein (HDL) cholesterol and triglycerides (TG) at eight weeks of age in F2 mice fed a chow diet. In order to narrow down lists of candidate genes, expression levels from liver tissue were used to test for differential expression among parental and F1 strains and to scan for eQTL in F2 animals. We provide evidence for Mppe1 (Chr 18) as an HDL QTL candidate gene and Cyp2d26 (Chr 15) as a TG QTL candidate gene. MRL/MpJ (MRL) mice were crossed with male SM/J (SM) mice; their progeny were intercrossed to produce 371 F2 animals. Of these, 282 F2 males and females were profiled with Affy Mouse Gene 1.0 ST arrays for an eQTL study. Three animals from each parental and the F1 strains from each sex, i.e. 18 in total, were also profiled for testing differential expression. A total of 300 samples are included in the dataset. The mice were weaned at 3 weeks on a chow diet. At 13 weeks of age, mice were single housed for 3 days and fasted for 4 hours prior to being sacrificed. Tissue collection was performed between noon and 1pm to avoid variations due to circadian rhythm.

ORGANISM(S): Mus musculus

SUBMITTER: Ricardo Verdugo

PROVIDER: E-GEOD-25322 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Integration of QTL and bioinformatic tools to identify candidate genes for triglycerides in mice.

Leduc Magalie S MS Hageman Rachael S RS Verdugo Ricardo A RA Tsaih Shirng-Wern SW Walsh Kenneth K Churchill Gary A GA Paigen Beverly B

Journal of lipid research 20110526 9

To identify genetic loci influencing lipid levels, we performed quantitative trait loci (QTL) analysis between inbred mouse strains MRL/MpJ and SM/J, measuring triglyceride levels at 8 weeks of age in F2 mice fed a chow diet. We identified one significant QTL on chromosome (Chr) 15 and three suggestive QTL on Chrs 2, 7, and 17. We also carried out microarray analysis on the livers of parental strains of 282 F2 mice and used these data to find cis-regulated expression QTL. We then narrowed the li ...[more]

PMID: 21622629

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Project description:Animal models have enhanced our understanding of the pathogenesis of autoimmune diseases. For these models, genetically identical, inbred mice have commonly been used. Different inbred mouse strains, however, show a high variability in disease manifestation. Identifying the factors that influence this disease variability could provide unrecognized insights into pathogenesis. We established a novel antibody transfer-induced model of epidermolysis bullosa acquisita (EBA), an autoimmune disease characterized by (muco)-cutaneous blistering caused by anti-type VII collagen (COL7) autoantibodies. Blistering after anti-COL7 IgG (directed against the von-Willebrand-factor A like domain 2) transfer showed clear variability among inbred mouse strains; i.e. severe cutaneous blistering and inflammation in C57Bl/6J, and absence of skin lesions in MRL/MpJ mice. The transfer of anti-COL7 IgG into irradiated, EBA-resistant MRL/MpJ mice, rescued by transplantation with bone marrow from EBA-susceptible B6.AK-H2k mice, induced blistering. To the contrary, irradiated EBA-susceptible B6.AK-H2k mice that were rescued using MRL/MpJ bone marrow were devoid of blistering. In vitro, immune complex activation of neutrophils from C57Bl/6J or MRL/MpJ mice showed an impaired ROS release from the latter, whereas no differences were observed after PMA activation. This finding was paralleled by divergent expression profiles of immune-complex activated neutrophils from either C57Bl/6J or MRL/MpJ mice. Collectively, we demonstrate that radiosensitive cells determine the varying extent of skin inflammation and blistering in the end-stage effector phase of EBA. We used microarray to differentiate between the molecular response for the immune complex stimulated neutrophils in MRL/MpJ and C57Bl/6J mice To unravel the molecular basis for the different response to immune complex (IC) stimulation between MRL/MpJ and C57Bl/6J mice, the cells were activated using IC, and differential expression using microarray was compared between resting or activated neutrophils from MRL/MpJ or C57Bl/6J mice.

Dataset Information

MRLxSM eQTL in Liver by RMA on Ensembl transcripts

Publications

Integration of QTL and bioinformatic tools to identify candidate genes for triglycerides in mice.

Similar Datasets

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