Light has a strong effect on whole organism physiology, such as the circadian rhythms that are phase delayed and advanced by light given at early and late subjective night, respectively. Despite the importance of the phase-dependent light responses, little is known about the underlying molecular mechanism. We performed a comprehensive analysis of genes induced by light in a phase-dependent manner in the chicken pineal gland, an organ that represents a unique vertebrate clock system harboring intrinsic light sensitivity.
Light-dependent and circadian clock-regulated activation of sterol regulatory element-binding protein, X-box-binding protein 1, and heat shock factor pathways.
Sex, Age, Specimen part, Treatment, Time
View SamplesPurpose: A super carbonate apatite (sCA) nanoparticle is an in vivo pH-sensitive delivery system for siRNA and microRNA. These carriers accumulate specifically in tumors, yet they cause no serious adverse events in mice and monkeys. Systemic administration of sCA incorporating siRNA and microRNA has demonstrated superb tumor suppressive effects in vivo. We recently observed that sCA could deliver abundant nucleic acids to the inflammatory sites in rheumatoid arthritis mouse model. Based on the success, we tried to examine whether sCA could deliver sufficient amounts of miRNA into the colorectum inflamed by dextran sodium sulfate (DSS) treatment. Methods: We performed a RNA sequencing analysis of the DSS-treated colon walls. DSS was administered for 4 days and sCA-miR-29a, sCA-miR-29b, sCA-NC-miR was injected on days 1, 2, 3. On day 4, colorectum was removed and the mRNA samples were subject to the RNA sequencing analysis. Results: RNA sequencing of the rectum samples showed a number of enhanced or reduced gene expression in DSS treated NC-miR group on day 4 compared to normal mice. Such tendency of upregulation or downregulation was also noted in DSS-treated NC-miR group on day 2. Comparison of DSS treated samples on day 4 among NC-miR, miR-29a and miR-29b groups, revealed that several gene expression related to the interferon pathway was reversed by miR-29a or miR-29b towards the normal controls. These include Stat1, Stat2, IRF7, IRF9, and IFIT1. Conclusions: Many molecules in the interferon signaling pathway were activated in DSS-induced colitis on day 4 and Stat1, Stat2, IRF7, IRF9, and IFIT1 were key molecules in the interferon related pathways. These findings suggest that sCA-miR-29a or sCA-miR-29b may inhibit type 1 IFN and type 2 IFN pathways which are otherwise activated by DSS treatment. Overall design: ?iR-29a and miR-29b, NC-miR loaded in sCA were systemically administered from the tail vein on the 1st, 2nd and 3rd days after the 2% DSS administration was started, and the rectum of the mouse was collected on the 4th day. RNA was extracted from the harvested colorectum. For these four conditions (n = 2) and normal mice (n = 2), ten samples were subjected to RNA sequencing.
The Supercarbonate Apatite-MicroRNA Complex Inhibits Dextran Sodium Sulfate-Induced Colitis.
Specimen part, Cell line, Subject
View SamplesMost autoreactive B cells are normally counterselected during early B cell development. To determine whether Toll-like receptors (TLRs) regulate the removal of autoreactive B lymphocytes, we tested the reactivity of recombinant antibodies from single B cells isolated from patients deficient for IL-1R-associated kinase (IRAK)-4, myeloid differentiation factor 88 (MyD88) and UNC-93B. Indeed, all TLRs except TLR3 require IRAK-4 and MyD88 to signal and UNC-93B-deficient cells are unresponsive to TLR3, TLR7, TLR8 and TLR9. All patients suffered from defective central and peripheral B cell tolerance checkpoints resulting in the accumulation of large numbers of autoreactive mature nave B cells in their blood. Hence, TLR7, TLR8, and TLR9 may prevent the recruitment of developing autoreactive B cells in healthy donors. Paradoxically, IRAK-4-, MyD88- and UNC-93B-deficient patients did not display autoreactive antibodies in their serum nor developed autoimmune diseases, suggesting that IRAK-4, MyD88 and UNC-93B pathway blockade may thwart autoimmunity in humans.
IRAK-4- and MyD88-dependent pathways are essential for the removal of developing autoreactive B cells in humans.
No sample metadata fields
View SamplesThe goal of this study is to elucidate the influence of treadmill training on transcriptome of the upper lumbar spinal cord after thoracic spinal cord hemisection. mRNA profiles of spinal cords at 23 days-post injury with/without treadmill training were generated. The expression levels of 650 genes in the trained animal were increased ( > 2-fold) compared to untrained animals. Our study represents the detailed analysis of transcriptomes of spinal cord distal to the hemisected lesion after treadmill training, with biologic replicates, generated by RNA-seq technology. Overall design: The effect of training after spinal cord injury (T9) on the transcriptome of intact upper spinal cord was investigated.
Locomotor Training Increases Synaptic Structure With High NGL-2 Expression After Spinal Cord Hemisection.
Specimen part, Cell line, Subject
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Comprehensive developmental profiles of gene activity in regions and subregions of the Arabidopsis seed.
Specimen part
View SamplesWe collected globular stage seed compartments from 5 or 7-micron paraffin sections using the Leica LMD6000 system in order to identify the mRNAs present in different compartments of an Arabidopsis seed containing a globular stage embryo. For the purposes of this study we broke down the seed into 8 capturable compartments: embyro proper, suspensor, micropylar endosperm, peripheral endosperm, chalazal endosperm, chalazal seed coat, general seed coat, and whole seeds.
Comprehensive developmental profiles of gene activity in regions and subregions of the Arabidopsis seed.
No sample metadata fields
View SamplesWe collected heart stage seed compartments from 7 micron paraffin sections using the Leica LMD6000 system in order to identify the mRNAs present in different compartments from seeds containing heart stage embryos. For the purposes of this study we captured 6 compartments: embryo proper, micropylar endosperm, peripheral endosperm, chalazal endosperm, chalazal seed coat and seed coat, as well sets of serial sections encompassing the entire heart stage seed.
Comprehensive developmental profiles of gene activity in regions and subregions of the Arabidopsis seed.
Specimen part
View SamplesWe collected linear-cotyledon stage seed compartments from 5 to 7 micron paraffin sections using the Leica LMD6000 system in order to identify the mRNAs present in different compartments from seeds containing linear-coyledon-stage embryos. For the purposes of this study we captured 7 compartments: embyro proper, cellularized endosperm, chalazal endosperm, chalazal seed coat, general seed coat, whole seeds and micropylar endosperm.
Comprehensive developmental profiles of gene activity in regions and subregions of the Arabidopsis seed.
No sample metadata fields
View SamplesWe collected mature green seed compartments from 7 micron paraffin sections using the Leica LMD6000 system in order to identify the mRNAs present in different compartments from seeds containing mature green-stage embryos. For the purposes of this study we captured 6 compartments: embryo proper, micropylar endosperm, cellularized peripherial endosperm, chalazal endosperm, chalazal seed coat and seed coat, as well sets of serial sections encompassing the entire mature green stage seed.
Comprehensive developmental profiles of gene activity in regions and subregions of the Arabidopsis seed.
Specimen part
View SamplesWe collected pre-globular stage seed compartments from 7-micron paraffin sections using the Leica LMD6000 system in order to identify the mRNAs present in different compartments of seeds containing pre-globular-stage embryos was identified as those seeds containing embryo propers made up of between 2 and 8 cells. For the purposes of this study we captured 6 compartments: embyro proper, micropylar endosperm, peripheral endosperm, chalazal endosperm, chalazal seed coat and general seed coat. Serial sections of entire seeds were also captured for comparison.
Comprehensive developmental profiles of gene activity in regions and subregions of the Arabidopsis seed.
No sample metadata fields
View Samples