Aspergillus fumigatus: Control vs. Deletion mutant
ABSTRACT: RGS protein encoding genes gprK and rgsC deletion mutant microarray To identify the function of RGSs of A. fumigatus Biological replicates: WT vs. three deletion mutants, independently grown and harvested. One replicate per array
Project description:Transcriptional profiling of Acinetobacter baumannii ATCC17978 cells comparing treated ethanol cells with oleanolic acid treated. Based on the gene expression, we performed experiments to confirm the therapeutic effect and mechanism of OA in A. baumannii. We performed a transcriptome anaylsis of 2 samples that are OA and ethanol treatment, respectively.
Project description:To understrand the altered global gene expression levels in C. glutamicum wild type in presence of furfural, transcriptome profiling was performed. Transcriptome profiles of the wild type grown in CgXII medium without furfural and with furfural stresses (each 6.5 mM, 13 mM, and 20 mM) were compared by using the samples taken at the OD600 of 6 (for the control and experiments). Each experiment was performed with a duplicate.
Project description:Transcriptional profiling of dark-grown Arabidopsis seedlings comparing SCR:PIF1/pifQ transgenic plant with pif1pif3pif4pif5 quadruple mutant (pifQ). Seedlings were grown under dark condition for 2.5 days. Goal was to determine the effects of endodermal PIF1 in dark-grown seedlings. Two-condition experiment, SCR:PIF1/pifQ vs. pifQ Biological replicates: 3 pifQ replicates, 3 SCR:PIF1 replicates.
Project description:We performed that comprehensive identification of genes responsible for stress tolerance by analyzing the whole-genome expression profiles of poplar (Populus alba × P. glandulosa) leaves exposed to drought and salt stresses. Examination at the molecular level how this tree species responds to drought and salt stresses by regulating the expression of genes involved in signal transduction, transcriptional regulation, and stress responses. Genome-wide analysis was conducted in poplar leaves exposed to drought and salt stresses.The plants were acclimated in soil and grown for 6 weeks in controlled conditions in a growth room (16 h light; light intensity, 150 μmol m-2sec-1; 24°C). Plants with a height of about 15 cm were separately exposed to either drought or salt stress. Up- and down-regulated genes were identified, and their putative functions are discussed.
Project description:The basidiomycetous fungus Cryptococcus has been known as radiation resistant fungi and is found in highly radioactive environments such as the damaged nuclear reactor at Chernobyl. Although Cryptococcus exhibits greater resistant for gamma radiation than the model yeast Saccharomyces cerevisiae, the resistant mechanism of gamma radiation remains elusive. To elucidate a unique regulatory system for radiation-resistance in C. neoformans, we performed genome-wide comparative analysis through DNA microarray analysis using C. neoformans WT strain (serotype A, H99 strain) responding gamma radiation. Based on the transcriptome analysis, genes involved in DNA damage repair systems (RAD51, RDH54, and RAD54) were significantly increased in response to gamma radiation. Actually, rad54∆ and rdh54∆ mutants exhibited sensitivity against both gamma radiation and DNA damage inducers. Furthermore, genes regarding to molecular chaperone and ubiquitination systems were strongly induced. In contrast, expression levels of genes related to protein synthesis, fatty acids/sterols synthesis, and other cellular molecules. Especially, ergosterol homeostasis is required for gamma radiation resistance. Furthermore, radiation-induced genes such as RIG4, RIG5, and RIG6 in C. neoformans play critical roles in gamma radiation resistance. Taken together, the transcriptome analysis contributes to understanding unique molecular mechanism of radiation-resistant fungus C. neoformans. To elucidate transcriptome change during recovery process post irrdiation, samples were taken at three time interval (30 min, 60 min, and 120 min). The three independent DNA microarry with three independent biological replicates were analyzed to obtain high reliability.
Project description:Viruses transmitted by small mammals and arthropods serve as global threats to humans. Most emergent and re-emergent viral agents are transmitted by these groups; therefore, the development of high-throughput screening methods for the detection and surveillance of such viruses is of great interest. In this study, we describe a DNA microarray platform that can be used for screening all viruses transmitted by small mammals and arthropods (SMAvirusChip) with nucleotide sequences that have been deposited in the GenBank. SMAvirusChip was designed with more than 15,000 oligonucleotide probes (60-mers), including viral and control probes. Two SMAvirusChip versions were designed: SMAvirusChip v1 contains 4209 viral probes for the detection of 409 viruses, while SMAvirusChip v2 contains 4943 probes for the detection of 416 viruses. SMAvirusChip was evaluated with 20 laboratory reference-strain viruses. These viruses could be specifically detected when alone in a sample or when artificially mixed within a single sample. The sensitivity of SMAvirusChip was evaluated using 10-fold serial dilutions of dengue virus (DENV). The results showed a detection limit as low as 2.6E3 RNA copies/mL. Additionally, the sensitivity was one log10 lower (2.6E2 RNA copies/mL) than quantitative real-time RT-PCR and sufficient to detect viral genomes in clinical samples. The detection of DENV in serum samples of DENV-infected patients (n= 6) and in a whole blood sample spiked with DENV confirmed the applicability of SMAvirusChip for the detection of viruses in clinical samples. In addition, in a pool of mosquito samples spiked with DENV, the virus was also detectable. SMAvirusChip was able to specifically detect viruses in cell cultures, serum samples, total blood samples and a pool of mosquitoes, confirming that cellular RNA/DNA did not interfere with the assay. Therefore, SMAvirusChip may represent an innovative surveillance method for the rapid identification of viruses transmitted by small mammals and arthropods. The SMAvirusChip v2 microarray includes more than 15,000 oligonucleotide probes (60-mers long) for the detection of viruses transmitted by small mammals and arthropods. The sequences of 4943 viral probes for the detection of 416 viruses (112 viruses transmitted by small mammals and 304 arboviruses) were included in this platform. Positive and negative control oligonucleotide probes were also included in the design.
Project description:To characterize anaerobic stress-induced expression in adhE mutants, the microarray experiment was performed with two serotypes of wild type E. coli and their adhE mutants: (1) K-12 strain, wild type; (2) B strain, wild type; (3) BW25113, adhE mutants; (4) BL21(DE3), adhE mutants. Under anaerobic growth condition in glucose-containing complex medium, the wild type strains 1 and 2 grew well whereas the mutant strains 3 and 4 experienced anaerobic stress and grew after 24 hours and 48 hours, respectively. For each of the four strains, RNA sampling was done after six hours of growth under anaerobic condition. Only one replicate was obtained for each strain.
Project description:We have employed whole RNA microarray expression profiling as a discovery platform to identify genes regulated by overexpression of miR-145 in U87 glioma cell. Lentivirus containing miR-145 coding sequence was infected to U87 cell to make U87 overexpressing miR-145. We did genome microarray between U87 and U87 overexpressing miR-145. Total RNAs from U87 cell or U87 overexpressing miR-145 were extracted. Whole RNA microarray expression profiling was performed between them.
Project description:Metabolically engineered Corynebacterium glutamicum strains were constructed for the enhanced production of L-arginine, and their gene expression profiles were investigated Gene expression profiles of two C. glutamicum strains AR2 and AR6 were examined for the 3043 genes twice.
Project description:Transcriptional profiling of KASUMI-1 cells comparing between control (DMSO-treated) and radotinib treated Kasumi-1 cells at 48hr one-condition experiment, Control vs RD 5 uM. Biological replicates: 1.