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Short and long attack latency mice

ABSTRACT: Two wild house mice lines were genetically selected for short and long attack latency. Mice with an attack latency <50s or >600s were considered short attack latency mice (SAL) and long attack latency mice(LAL) respectively. RNA from the hippocampus of 14 SAL or 14 LAL mice was pooled and used as input material for the SAGE libraries. Keywords: other

ORGANISM(S): Mus musculus

PROVIDER: GSE786 | GEO | 2003/10/31

SECONDARY ACCESSION(S): PRJNA87753

REPOSITORIES: GEO

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short and long attack latency mice

Project description:Two wild house mice lines were genetically selected for short and long attack latency. Mice with an attack latency <50s or >600s were considered short attack latency mice (SAL) and long attack latency mice(LAL) respectively. RNA from the hippocampus of 14 SAL or 14 LAL mice was pooled and used as input material for the SAGE libraries. Keywords: other

2003-10-30 | E-GEOD-786 | biostudies-arrayexpress

Mus musculus

Project description:short and long attack latency mice

| PRJNA87753 | ENA

Maize Stem Response to Long-Term Attack by Sesamia nonagrioides

Project description:Plants defend themselves against herbivores by activating a plethora of genetic and biochemical mechanisms aimed at reducing plant damage and insect survival. The short-term plant response to insect attack is well understood, but less is known about the maintenance of this response over time. We performed transcriptomic and metabolomics analyses in order to identify genes and metabolites involved in the long-term response of maize to attack by the corn borer Sesamina nonagrioides. To determine the role of elicitors present in caterpillar secretions, we also evaluated the response of maize stem challenged with insect regurgitates. The integrative analysis of the omics results revealed that the long-term response in maize is characterized by repression of the primary metabolism and a strong redox response, mainly mediated by germin-like proteins to produce anti-nutritive and toxic compounds that reduce insect viability, and with the glutathione–ascorbate cycle being crucial to minimize the adverse effects of reactive oxygen species (ROS) on the plant. Our results suggest that different defense mechanisms are involved in the long-term response compared to those reported during the early response. We also observed a marginal effect of the caterpillar regurgitates on the long-term defensive response.

2018-05-16 | MTBLS575 | MetaboLights

vzv latency

Project description:vzv latency

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Identification of Host Biomarkers of EBV Latency IIb and Latency III

Project description:Deciphering the molecular pathogenesis of virally induced cancers is challenging due, in part, to the heterogeneity of both viral and host gene expression. Epstein-Barr Virus (EBV) is a ubiquitous herpesvirus prevalent in B-cell lymphomas of the immune suppressed. EBV infection of primary human B cells leads to their immortalization into lymphoblastoid cell lines (LCLs) serving as a model of these lymphomas. In previous studies, our lab has described a temporal model for immortalization with an initial phase characterized by expression of the Epstein-Barr Nuclear Antigens (EBNAs), high c-Myc activity, and hyper-proliferation in the absence of the Latent Membrane Proteins (LMPs), called latency IIb. This is followed by the long-term outgrowth of LCLs expressing the EBNAs along with the LMPs, particularly the NFkB-activating LMP1, defining latency III. LCLs, however, express a broad distribution of LMP1 such that a subset of these cells expresses LMP1 at levels seen in latency IIb, making it difficult to distinguish these two latency states. In this study, we performed mRNA-Seq on early EBV-infected latency IIb cells and latency III LCLs sorted by NFkB activity. We found that latency IIb transcriptomes clustered independently from latency III independent of NFkB. We identified and validated mRNAs defining these latency states. Indeed, we were able to distinguish latency IIb cells from LCLs expressing low levels of LMP1 using multiplex RNA-FISH targeting EBV EBNA2, LMP1, and human CCR7 or MGST1. This study defines latency IIb as a bona fide latency state independent from latency III and identifies biomarkers for understanding EBV-associated tumor heterogeneity

2019-06-04 | GSE132138 | GEO

Data Independent Acquisition (DIA) based quantification workflow for proteome analysis of GASH/Sal and Control hamster

Project description:The GASH/Sal hamster (Genetic audiogenic seizure, Salamanca) is a model of audiogenic seizures with the epileptogenic focus localized in the inferior colliculus (IC). The sound-induced seizures exhibit a short latency (7-9 seconds), which implies innate protein disturbances in the IC as a basis for seizure susceptibility and generation. Here, we aim to study the protein profile in the GASH/Sal IC in comparison to controls. Protein samples from the IC were processed for enzymatic digestion and then analyzed by mass spectrometry in Data-Independent Acquisition mode. After identifying the proteins using the UniProt database, we selected those with differential expression. We identified 5254 proteins, of which 184 were differentially expressed, 126 upregulated and 58 downregulated. Moreover, a small number of proteins were uniquely found in the GASH/Sal or the control. The resuls indicated a protein profile alteration in the epileptogenic nucleus that might underlie the innate occuring audiogenic seizures in the GASH/Sal model.

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Citrullination of latency-associated peptide of TGF beta1

Project description:Enzymatic citrullination of latency-associated peptide of TGF beta1 by PAD2

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Rescue of lysosomal acid lipase deficiency in mice by AAV liver gene transfer

Project description:Lysosomal acid lipase deficiency (LAL-D) is an autosomal recessive disorder caused by mutation in LIPA gene, which results in fat accumulation in liver and spleen leading to multi-organ failure. The severe form of LAL-D (infantile-onset; ≤5% residual LAL activity), if left untreated, results in premature death within the first year of life due to failure to thrive and hepatic insufficiency. Enzyme replacement therapy is the only available supportive treatment consisting in weekly systemic injection of recombinant LAL. Here, we characterize a novel LAL-D mouse model and develop a curative gene therapy treatment based on the in vivo administration of recombinant AAV8 (rAAV8) vector encoding for human LIPA transgene under the control of hepatocyte-specific promoter. We define the minimal AAV dose required to rescue disease lethality and to produce and secrete sufficient LAL to correct cholesterol and triglycerides accumulation in liver, spleen, blood cells and plasma. Finally, using liver transcriptomic and biochemical analysis, we also show the impairment of mitochondria associated with LAL-D and its recovery by gene therapy. Overall, our in vivo gene therapy strategy achieves stable long-term LAL expression to correct disease phenotype in LAL-D mouse model and opens a new therapeutic option for LAL-D patients.

2024-06-01 | GSE252742 | GEO

Gene expression changes following latency reversal agents screening in a cellular model of HIV-1 latency

Project description:To delineate the mechanism driving JAK2 inhibitors´ induced effects on HIV-1 latency, whole transcriptome profiling was performed in the HIV-1 latency model HL-HIG, treated with the LRA fedratinib, the LPA pacritinib, the pan-JAKi ruxolitinib and PMA as a positive control of latency reactivation and immune activation.

2022-08-24 | GSE195855 | GEO

Identification of Host Biomarkers of EBV Latency IIb and Latency III

Project description:Identification of Host Biomarkers of EBV Latency IIb and Latency III

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