ZIP-3 has been shown to repress the mitochondrial-UPR response. To identify genes repressed by ZIP-3, we compared transcript profiles from wildtype, atfs-1(tm4919) and zip-3(gk3164) worms raised on control RNAi or spg-7 RNAi Overall design: RNA samples were prepared from wild-type(wt) and zip-3(gk3164)(mutant) worms fed either control RNAi or spg-7 RNAi. Worms were synchronized by bleaching, raised on NGM plates seeded with control RNAi or spg-7 RNAi till L4 stage and then harvested. Each experiment was performed in triplicate indicated as 1,2 and 3.
Mitochondrial UPR repression during <i>Pseudomonas aeruginosa</i> infection requires the bZIP protein ZIP-3.
Specimen part, Subject
View SamplesZIP-3 has been shown to repress the mitochondrial-UPR genes and immune response during P. aeruginosa infection. To identify genes repressed by ZIP-3, we compared transcript profiles from wildtype and zip-3(gk3164) worms raised on P. aeruginosa or E. coli. Overall design: RNA samples were prepared from wild-type(wt) and zip-3(gk3164)(mutant) worms fed either E. coli or P. aeruginosa. Worms were synchronized by bleaching, starved on empty NGM plates for 48h, transferred to E. coli or P. aeruginosa seeded NGM plates for 18h and then harvested. Each experiment was performed in triplicate indicated as 1,2 and 3.
Mitochondrial UPR repression during <i>Pseudomonas aeruginosa</i> infection requires the bZIP protein ZIP-3.
Specimen part, Subject
View SamplesTo study characteristics of the orapharyngeal epithelia which may influence susceptibility or resistance to HIV, we performed microarray analysis of the tonsil and gingival epithelium.Tonsil epithelium has been implicated in HIV pathogenesis, but its role in oral transmission remains controversial. We performed microarray analysis of Laser Capture Microdissected tonsil and gingival epithelium. Our data revealed that genes related to immune functions such as antibody production and antigen processing were increasingly expressed in tonsil compared to the epithelium of another oro-pharyngeal site, gingival epithelium. Importantly, tonsil epithelium highly expressed genes associated with HIV entrapment and/or transmission, including the HIV co-receptor CXCR4 and the potential HIV binding molecules, FcRIII, complement receptor 2, and various complement components. This increased expression of molecules involved in viral recognition, binding and entry may favor virus-epithelium interaction in an environment with reduced innate anti-viral mechanisms. Specifically, secretory leukocyte protease inhibitor, an innate molecule with anti-HIV activity, was minimal in the tonsil epithelium, in contrast to oral mucosa. Collectively, our data suggest that increased expression of molecules associated with HIV binding and entry coupled with decreased innate anti-viral factors may render the tonsil a potential site for oral transmission.
Tonsil epithelial factors may influence oropharyngeal human immunodeficiency virus transmission.
No sample metadata fields
View SamplesSmall RNAs (21-24 nt) are pivotal regulators of gene expression that guide both transcriptional and post-transcriptional silencing mechanisms in diverse eukaryotes, including most if not all plants. MicroRNAs (miRNAs) and short interfering RNAs (siRNAs) are the two major types, both of which have a demonstrated and important role in plant development, stress responses and pathogen resistance. In this work, we used a deep sequencing approach (Sequencing-By-Synthesis, or SBS) to develop sequence resources of small RNAs from different maize tissues (including leaves, ears and tassels) collected from wild-type plants of the B73 variety. The high depth of the resulting datasets enabled us to examine in detail critical small RNA features as size distribution, tissue-specific regulation and sequence conservation between different organs in this species. We also developed database resources and a dedicated website (http://smallrna.udel.edu/) with computational tools for allowing other users to identify new miRNAs or siRNAs involved in specific regulatory pathways, verify the degree of conservation of these sequences in other plant species and map small RNAs on genes or larger regions of the maize genome under study. Overall design: Small RNA libraries were derived from leaves, ears and tassels of maize variety B73 (wild-type). Plants were grown in a flood irrigated plot at the University of Arizona (Tucson, AZ, USA) in 2007 and organs were pooled from several plants for each library. Young leaves were collected from 6-weeks-old seedlings. Post-meiotic immature ears were harvested from 10- and 11-week old plants while pre-meiotic tassels were collected from 8-week old plants. Total RNA was isolated using the Plant RNA Purification Reagent (Invitrogen) and submitted to Illumina (Hayward, CA, http://www.illumina.com) for small RNA library construction using approaches described in (Lu et al., 2007) with minor modifications. The small RNA libraries were sequenced with the Sequencing-By-Synthesis (SBS) technology by Illumina. PERL scripts were designed to remove the adapter sequences and determine the abundance of each distinct small RNA. We thank Lyudmila Sidorenko and Vicki Chandler for providing the plant material and Kan Nobuta for assistance with the computational methods.
Detailed analysis of a contiguous 22-Mb region of the maize genome.
Subject
View SamplesWe investigated the impact of on miR-H1 and miR-K12-3-3p- on host transcriptome focusing on gingival epithelial cells that are target sites for various HHV.
Herpesvirus-encoded microRNAs detected in human gingiva alter host cell transcriptome and regulate viral infection.
Specimen part
View SamplesIn depth temporal profiling of transcript changes at 10 time points during germination in Arabidopsis seed was carried out. The time course utilised, encompassed seed maturation, stratification, germination and post-germination and provided a global investigation into the tightly regulated, phasic changes that define seed germination.
In-depth temporal transcriptome profiling reveals a crucial developmental switch with roles for RNA processing and organelle metabolism that are essential for germination in Arabidopsis.
Specimen part, Disease, Time
View SamplesIn response to bacterial infection, early transcriptional re-programming occurs in the host plant.
Antagonistic, overlapping and distinct responses to biotic stress in rice (Oryza sativa) and interactions with abiotic stress.
Specimen part
View SamplesIn response to WRKY40 and WRKY60 perturbation (and high light stress), significant transcriptional re-programming occurs particularly for genes encoding stress responsive mitochondrial and choloplast proteins.
AtWRKY40 and AtWRKY63 modulate the expression of stress-responsive nuclear genes encoding mitochondrial and chloroplast proteins.
Specimen part, Treatment
View SamplesTranscript abundance profiles were examined over the first 24 hours of germination in rice grown under aerobic conditions.
Experimental analysis of the rice mitochondrial proteome, its biogenesis, and heterogeneity.
Specimen part, Time
View SamplesIn this experiment, we sought to analyze how the transcriptome of WT, ?5|6, and ?5|6:7|9 cells vary during differentiation of ESCs into cervical motor neurons Overall design: 3 lines (WT, ?5|6, ?5|6:7|9)
CTCF establishes discrete functional chromatin domains at the Hox clusters during differentiation.
No sample metadata fields
View Samples