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Transcriptome profiling of murine lungs after treatment with vector to deplete endogenous miRNAs

ABSTRACT: To assess the impact of AdV-VP55 mediated degredation of host miRNAs on the murine whole lung transcriptome profile

ORGANISM(S): Mus musculus

PROVIDER: GSE73932 | GEO | 2016/08/03

SECONDARY ACCESSION(S): PRJNA298532

REPOSITORIES: GEO

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Transcriptome profiling of murine lungs after treatment with vector to deplete endogenous miRNAs

Project description:To assess the impact of AdV-VP55 mediated degredation of host miRNAs on the murine whole lung transcriptome profile Non-replicateive Adeno vectors were delivered intranasally to 6-8 week old C57BL/6 mice for 48hrs. Whole lung tissue was isolated and used for transcriptome profiling.

2016-08-03 | E-GEOD-73932 | biostudies-arrayexpress

Transcriptome profiling of HEK 293T cells depleted of endogenous miRNAs

Project description:To assess the impact of AdV-VP55 mediated degredation of host miRNAs on the cellular transcriptome.

2016-01-30 | GSE73718 | GEO

Small RNA deep sequencing of HEK 293T cells treated with an Adeno vector encoding the Vaccinia virus VP55 protein

Project description:To assess the efficacy of AdV-VP55 mediated degredation of host miRNAs.

2016-08-03 | GSE74088 | GEO

Small RNA deep sequencing of HEK 293T cells treated with an Adeno vector encoding the Vaccinia virus VP55 protein

Project description:To assess the efficacy of AdV-VP55 mediated degredation of host miRNAs. Small RNA profiles of HEK 293T cells treated with type 5 Adeno vectors expressing either GFP or GFP-VP55 for 24 hours

2016-08-03 | E-GEOD-74088 | biostudies-arrayexpress

Transcriptome profiling of HEK 293T Dicer -/- cells with or without VP55

Project description:To assess the impact of VP55 expression on cells already lacking endogenous miRNAs

2016-11-25 | GSE73934 | GEO

MicroRNAs from saliva of anopheline mosquitoes mimic human endogenous miRNAs and may contribute to vector-host-pathogen interactions.

Project description:During blood feeding haematophagous arthropods inject into their hosts a cocktail of salivary proteins whose main role is to counteract host haemostasis, inflammation and immunity. However, animal body fluids are known to also carry miRNAs. To get insights into saliva and salivary gland miRNA repertoires of the African malaria vector Anopheles coluzzii we used small RNA-Seq and identified 214 miRNAs, including tissue-enriched, sex-biased and putative novel anopheline miRNAs. Noteworthy, miRNAs were asymmetrically distributed between saliva and salivary glands, suggesting that selected miRNAs may be preferentially directed toward mosquito saliva. The evolutionary conservation of a subset of saliva miRNAs in Anopheles and Aedes mosquitoes, and in the tick Ixodes ricinus, supports the idea of a non-random occurrence pointing to their possible physiological role in blood feeding by arthropods. Strikingly, eleven of the most abundant An. coluzzi saliva miRNAs mimicked human miRNAs. Prediction analysis and search for experimentally validated targets indicated that miRNAs from An. coluzzii saliva may act on host mRNAs involved in immune and inflammatory responses. Overall, this study raises the intriguing hypothesis that miRNAs injected into vertebrates with vector saliva may contribute to host manipulation with possible implication for vector-host interaction and pathogen transmission.

| S-EPMC6393464 | biostudies-literature

Comparison of Ildr2 knockdown by (Adv-shRNA) and Ildr2 knockout (Adv-Cre) in mouse liver

Project description:We observed that Ildr2 knockdown via adenovirally-delivered shRNA (Adv-Ildr2 shRNA) causes hepatic steatosis in mice. Acute, liver-specific Ildr2 knockout mice generated by infecting C57BL/6J mice segregating for a floxed allele of Ildr2 with adenoviral Cre recombinase (Adv-Cre) do not develop hepatic steatosis. However, administration of Adv-Ildr2 shRNA to Ildr2 knockout mice (Ildr2floxed; albumin-cre) did cause hepatic steatosis, indicating that the Adv-Ildr2 shRNA had apparent “off-target” effects on gene(s) other than Ildr2. To determine additional targets of Ildr2 shRNA that may regulate hepatic lipid metabolism, we performed RNA sequencing on liver samples from (1) Adv-Ildr2 shRNA knockdown mice, (2) Adv-lacZ shRNA control mice, and (3) Adv-Cre Ildr2 knockout mice. For the purposes of our study, we sought to identify genes downregulated by Adv-Ildr2 shRNA, but unchanged in Adv-lacZ shRNA control or Adv-Cre Ildr2 knockout mice. The hepatic steatosis observed in Adv-Ildr2 shRNA knockdown mice was likely due to shRNA targeting of other “off-target” genes. We propose that the genes candidates identified in this sequencing experiment may lead to identification of novel regulators of hepatic lipid metabolism.

2018-05-11 | GSE114289 | GEO

Bioenergetics of murine lungs infected with respiratory syncytial virus.

Project description:BACKGROUND: Cellular bioenergetics (cellular respiration and accompanying ATP synthesis) is a highly sensitive biomarker of tissue injury and may be altered following infection. The status of cellular mitochondrial O(2) consumption of the lung in pulmonary RSV infection is unknown. METHODS: In this study, lung fragments from RSV-infected BALB/c mice were evaluated for cellular O(2) consumption, ATP content and caspase activity. The disease was induced by intranasal inoculation with the RSV strain A2 and lung specimens were analyzed on days 2-15 after inoculation. A phosphorescence O(2) analyzer that measured dissolved O(2) concentration as a function of time was used to monitor respiration. The caspase-3 substrate analogue N-acetyl-asp-glu-val-asp-7-amino-4-methylcoumarin (Ac-DEVD-AMC) was used to monitor intracellular caspases. RESULTS: O(2) concentration declined linearly with time when measured in a sealed vial containing lung fragment and glucose as a respiratory substrate, revealing its zero-order kinetics. O(2) consumption was inhibited by cyanide, confirming the oxidation occurred in the respiratory chain. Cellular respiration increased by 1.6-fold (p<0.010) and ATP content increased by 3-fold in the first week of RSV infection. Both parameters returned to levels found in uninfected lungs in the second week of RSV infection. Intracellular caspase activity in infected lungs was similar to uninfected lungs throughout the course of disease. CONCLUSIONS: Lung tissue bioenergetics is transiently enhanced in RSV infection. This energy burst, triggered by the virus or virus-induced inflammation, is an early biomarker of the disease and may be targeted for therapy.

| S-EPMC3616819 | biostudies-literature

MicroRNAs reinforce repression of PRC2 transcriptional targets independently and through a feed-forward regulatory network with PRC2 [miRNA-seq]

Project description:We performed miRNA-seq to test for global loss of miRNA in response to VP55 overexpression.

2019-01-09 | GSE112612 | GEO

Apolipoprotein A1-Manipulated Cholesterol Efflux Subverts the Phagocytic Fragility of TAMs and Improves Oncolytic Viro-Immunotherapy in Glioblastoma [Tumor RNA-seq]

Project description:We found that overexpression of APOA1 in glioblastoma (GBM) promotes cholesterol efflux from TAMs and restores phagocytosis and antigen presentation. Therefore, we constructed a recombinant oncolytic adenovirus expressing APOA1 to carry the cholesterol regulatory elements of TAMs. AdV-APOA1 exhibited better antitumor effects than AdV-Ctrl in several orthotopic GBM tumor models. Further, we collected virus-treated GL261-CAR tumors for RNA-seq to reveal differences in biological processes between them. Specifically, intracranial 14-day GL261-CAR-bearing C57BL/6J mice were i.t. injected with 1 × 108 PFU AdV-Ctrl or 1 × 108 PFU AdV-APOA1. The tumor bulks were then collected to perform transcriptome RNA-seq analysis 3 days after virus injection.

2022-05-04 | GSE201976 | GEO

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