Background
Expression quantitative trait loci mapping identifies new genetic models of glutathione S-transferase variation.
No sample metadata fields
View SamplesThe polytrauma (PT) murine model has unique transcriptomic responses 2 hrs, 1 day and 3 days after injury. We determined with this clinically relevant model that the increased morbidity in the elderly is secondary to a failure of bone marrow progenitors, blood neutrophils, and bronchoalveolar lavage cells to initiate and complete an 'emergency myelopoietic' response, engendering myeloid cells that fail to clear secondary infection. In addition, the elderly appear unable to effectively resolve their inflammatory response to severe injury.
A Detailed Characterization of the Dysfunctional Immunity and Abnormal Myelopoiesis Induced by Severe Shock and Trauma in the Aged.
Sex, Specimen part, Treatment
View SamplesThe PT , PT + PP, and CLP murine models have unique transcriptomic respones 2 hrs, 1 and 3 days after injury
No associated publication
Specimen part, Treatment
View SamplesOld C57BL/6 mice cannot mount an effective innate immune response
Aged mice are unable to mount an effective myeloid response to sepsis.
Specimen part, Treatment, Time
View SamplesDifferential gene expression in the salivary gland during development and onset of xerostomia in Sjgrens syndrome-like disease of the C57BL/6.NOD-Aec1Aec2 mouse.
No associated publication
Sex, Age, Specimen part
View SamplesThe C57BL/6.NOD-Aec1Aec2 mouse is a model for primary Sjgrens syndrome and was constructed by introducing two genetic intervals derived from the NOD mouse that confers Sjgrens syndrome (SjS)-like disease in SjS-non-susceptible C57BL/6 mice.
Transcriptional landscapes of emerging autoimmunity: transient aberrations in the targeted tissue's extracellular milieu precede immune responses in Sjögren's syndrome.
Sex, Age, Specimen part
View SamplesVaccinia virus infection of mouse lungs produces a focal infection within the lung remaining at the large bronchi throughout the course of infection. Animals die of respiratory failure with little edema and few infiltrating immune cells. It is well established that poxviruses control the host immune system by encoding multiple host defense pathway antagonists.
Roles of vaccinia virus genes E3L and K3L and host genes PKR and RNase L during intratracheal infection of C57BL/6 mice.
Specimen part
View SamplesWild type and Dicer null embryonic mouse limbs were analaysed using Affymetrix arrays to identify gene expression changes. Genes that were up-regulated in Dicer-null limbs were canidates for being miRNA targets.
No associated publication
No sample metadata fields
View SamplesInteraction of hematopoietic progenitors with the thymic stromal microenvironment induces them to proliferate, adopt the T cell fate, and asymmetrically diverge into multiple T lineages. Progenitors at various developmental stages are stratified among different regions of the thymus, implying that the corresponding microenvironments differ from one another, and provide unique sets of signals to progenitors migrating between them. The nature of these differences remains undefined. Here we use novel physical and computational approaches to characterize these stromal subregions, distinguishing gene expression in microdissected tissues from that of their lymphoid constituents. Using this approach, we comprehensively map gene expression in functionally distinct stromal microenvironments, and identify clusters of genes that define each region. Quite unexpectedly, we find that the central cortex lacks distinctive features of its own, and instead appears to function by sequestering unique microenvironments found at the cortical extremities, and modulating the relative proximity of progenitors moving between them.
Spatial mapping of thymic stromal microenvironments reveals unique features influencing T lymphoid differentiation.
Specimen part
View SamplesThe mitochondrial superoxide dismutase (SOD2) is a major antioxidant protein which detoxifies superoxide anion radicals generated by mitochondrial respiration (Weisiger and Fridovich, J. Biol. Chem. 1973). We designed a model of oxidative stress-induced anemia caused by SOD2-deficiency (Friedman et al. J. Exp. Med. 2001). Our previous work showed that mice reconstituted with SOD2-deficient hematopoietic stem cells develop an anemia with striking similarity to human sideroblastic anemia (SA) (Friedman et al. Blood 2004; Martin et al. Exp Hematol 2005). Our overall goal was to define early events in the pathogenesis of SOD2-deficiency SA and, in particular, to identify genes involved in the response of erythroid progenitors to oxidative stress. We compared gene expression of sorted TER-119+ CD71+ erythroblasts from SOD2-/- ('KO') versus Sod2+/+ ('WT') hematopoietic stem cell recipients using cDNA microarrays.
No associated publication
No sample metadata fields
View Samples