This study delineated how small intestinal resident microflora impact gene expression in Paneth cells.
Symbiotic bacteria direct expression of an intestinal bactericidal lectin.
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View SamplesA model system of Potyvirus turnip mosaic virus and Arabidopsis was used in this experiment. GFP-tagged virus supplied a visualized marker for us to localize the viral infection foci and its expansion on leaf under UV light. Initially, we dissect an individual infection focus and its adjacent region into four parts and define those four parts as zone 0, 1, 2, and 3, which represented different viral infection stages respectively. Corresponding fours parts were also dissected from control plant treated with turnip leaf sap only. This process was replicated three times totally.
Spatial analysis of arabidopsis thaliana gene expression in response to Turnip mosaic virus infection.
Age, Specimen part
View SamplesExperimental design: 1 genotype: PI- (resistant USDA Plant Introduction (PI462312) line containing SBR Rpp3 resistance gene) 3 treatments: Virulent soybean rust (Phakopsora pachyrhizi Tw80-2) challenge, avirulent soybean rust challenge (Hw94-1) & mock infection 3 replications 6 time points: 12, 24, 72, 144, 216 and 288 hours after inoculation TOTAL: 54 Affymetrix GeneChip(R) Soybean Genome Arrays Mock treatment: 0.01% Tween 20 Hawaii 94 treatment: 500,000 spores per ml in 0.01% Tween 20 Taiwan 80-2 treatment: 500,000 spores per ml in 0.01% Tween 20 ****[PLEXdb(http://www.plexdb.org) has submitted this series at GEO on behalf of the original contributor, Martijn van de Mortel (for Steve Whitham). The equivalent experiment is GM36 at PLEXdb.]
Biphasic gene expression changes elicited by Phakopsora pachyrhizi in soybean correlate with fungal penetration and haustoria formation.
Specimen part, Time
View SamplesGmMPK4 silencing was performed in Glycine max (Williams 82) using virus-induced gene silencing (VIGS) mediated by Bean pod mottle virus (BPMV). Microarray analysis was performed to compare the transcriptional profile of GmMPK4-silenced plants vs vector control plants. ****[PLEXdb(http://www.plexdb.org) has submitted this series at GEO on behalf of the original contributor, Jianzhong Liu. The equivalent experiment is GM25 at PLEXdb.]
Soybean homologs of MPK4 negatively regulate defense responses and positively regulate growth and development.
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View SamplesExperimental design: 2 genotypes: PI230970 (resistant USDA Plant Introduction (PI) line containing SBR Rpp2 resistance gene) & Embrapa-48 (susceptible Brazilian cultivar) 2 treatments: Soybean rust challenge & mock infection 3 replications 10 time points: 6, 12, 18, 24, 36, 48, 72, 96, 120, 168hai TOTAL: 120 Affymetrix GeneChip(R) Soybean Genome Arrays ****[PLEXdb(http://www.plexdb.org) has submitted this series at GEO on behalf of the original contributor, Martijn van de Mortel. The equivalent experiment is GM2 at PLEXdb.]
Distinct biphasic mRNA changes in response to Asian soybean rust infection.
Specimen part, Time
View SamplesIn the present study, we hypothesized that C/EBPa (CCAAT/enhancer-binding protein alpha) plays a role in cell regeneration in response to bronchiolar epithelial cell injury. C/EBPa mediated ciliated cell regeneration after naphthalene bronchiolar epithelial cell injury in vivo. Furthermore, we demonstrated that C/EBPa regulates protease/anti-protease balance after lung injury, and intratracheal treatment with anti-protease (BPTI) restored ciliated cell regeneration after naphthalene injury in CebpaD/D mice.
CCAAT/enhancer binding protein-α regulates the protease/antiprotease balance required for bronchiolar epithelium regeneration.
Specimen part, Treatment
View SamplesDeletion of Stat3 induced genes influencing protein metabolism, transport, chemotaxis and apoptosis and decreased the expression of genes mediating lipid synthesis and metabolism. Srebf1 and 2, key regulators of fatty acid and steroid biosynthesis, were decreased in Stat3D/D mice. Stat3 influenced both pro- and anti-apoptotic pathways, regulating and maintaining the balance between a subset of pro- and anti-apoptotic genes that determine cell death or survival. Akt, a known target of Stat3, participates in many Stat3 mediated pathways including Jak-Stat signaling, apoptosis, the MAPK signaling, cholesterol and fatty acid biosynthesis. Deletion of Stat3 from type II epithelial cells altered the expression of genes regulating diverse cellular processes, including cell growth and apoptosis, lipid biosynthesis and metabolism. Stat3 regulates cell formation through a complex regulatory network that likely enhances alveolar epithelial cell survival and surfactant/lipid synthesis, necessary for the protection of the lung during injury.
Gene expression and biological processes influenced by deletion of Stat3 in pulmonary type II epithelial cells.
No sample metadata fields
View SamplesWe have previously demonstrated that deletion of the Cebpa gene in the developing fetal mouse lung caused death soon after birth from the failure of lung maturation. Many of the transcriptional pathways regulating morphogenesis of the fetal lung are induced postnatally and mediate repair of the injured lung. We hypothesized that C/EBPa plays a role in protection of the alveolar epithelium following hyperoxia injury of the mature lung. Transgenic Cebpa/ mice in which Cebpa was conditionally deleted from Clara cells (from early gestation) and type II cells (from near-term) were developed. Cebpa/ mice grow normally without any pulmonary abnormalities. Cebpa/ mice were highly susceptible to hyperoxia. Cebpa/ mice died within 4d after hyperoxia associated with severe lung inflammation and altered surfactant components at a time when all control mice survived. Microarrays were analyzed on isolated type II cells at an early stage (24h) of hyperoxia exposure to detect the primary genes influenced by deletion of Cebpa. The associated network analysis revealed the reduced expression of key genes related to surfactant lipid and protein homeostasis, such as Srebf, Scap, Lpcat1, Abca3, Sftpb, and Napsa. Genes for the cell signaling, immune response, and protective antioxidants, including GSH and Vnn-1,3, were decreased in the Cebpa/ mice lung. C/EBPa did not play a critical role in postnatal pulmonary function under normal conditions. In contrast, in the absence of C/EBPa, exposure to hyperoxia caused respiratory failure, supporting the concept that C/EBPa plays an important role in enhancing epithelial cell survival, surfactant lipid homeostasis, and maturation of SP-B from pro-SP-B.
C/EBP{alpha} is required for pulmonary cytoprotection during hyperoxia.
Specimen part
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Hippo/Yap signaling controls epithelial progenitor cell proliferation and differentiation in the embryonic and adult lung.
Specimen part
View SamplesPrimary human bronchial epithelial cells were transduced with control or hYAP(S127A) lentivirus in sphere forming conditions. Bronchospheres were harvested on day 18-20 for RNAseq analysis Overall design: Passage 1 Primary HBECs from 2 independent donors were transduced with control or hYAP lentivirus. 48 hours post infection, cells were plated on transwell inserts in a 50-50 mixture of ALI medium-Cultrex BME reduced growth factor (RGF) to form spheres. Well differentiated bronchospheres were harvested for RNA-seq analysis on day 18-20 by combining 3 wells of each group for each donor.
Hippo/Yap signaling controls epithelial progenitor cell proliferation and differentiation in the embryonic and adult lung.
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