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Profiling whole lung from Ovalbumin (OVA)-challenged and control BALB/c mice

ABSTRACT: This program aims at identifying the lung gene signature associated with OVA-challenged mouse asthma model to facilitate understanding of the disease mechanism and therapeutic compound testing The OVA-challenged profiling data was analyzed by identifying genes that were up- and down-regulated at selected p value and fold change in the lungs of OVA-challenged mice compared to the corresponding PBS-treated controls.

ORGANISM(S): Mus musculus

SUBMITTER: I-Ming Wang

PROVIDER: E-GEOD-31949 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Systems analysis of eleven rodent disease models reveals an inflammatome signature and key drivers.

Wang I-Ming IM Zhang Bin B Yang Xia X Zhu Jun J Stepaniants Serguei S Zhang Chunsheng C Meng Qingying Q Peters Mette M He Yudong Y Ni Chester C Slipetz Deborah D Crackower Michael A MA Houshyar Hani H Tan Christopher M CM Asante-Appiah Ernest E O'Neill Gary G Luo Mingjuan Jane MJ Thieringer Rolf R Yuan Jeffrey J Chiu Chi-Sung CS Lum Pek Yee PY Lamb John J Boie Yves Y Wilkinson Hilary A HA Schadt Eric E EE Dai Hongyue H Roberts Christopher C

Molecular systems biology 20120717

Common inflammatome gene signatures as well as disease-specific signatures were identified by analyzing 12 expression profiling data sets derived from 9 different tissues isolated from 11 rodent inflammatory disease models. The inflammatome signature significantly overlaps with known drug targets and co-expressed gene modules linked to metabolic disorders and cancer. A large proportion of genes in this signature are tightly connected in tissue-specific Bayesian networks (BNs) built from multiple ...[more]

PMID: 22806142

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Mouse model of severe asthma: ovalbumin challenge

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Project description:Lungs from miR-21+/+ and miR-21-/- mice sensitized with OVA/Alum and challenged with either saline or OVA.

2011-08-25 | E-MEXP-3119 | biostudies-arrayexpress

In vivo polarization of Ovalbumin (OVA)-specific CD4 (OTII) T cells

Project description:There remains a need for analysis of CD4 helper T cells differentiation in vivo. To this end ovalbumin (OVA)-specific CD4 (OTII) T cells transferred into congenic mice were studied. Live attenuated OVA-expressing Salmonella (SalOVA) induce T-bet and IFN-g in OTII cells, while alum-precipitated OVA (alumOVA) induces GATA-3 and IL-4. Although 70% of alumOVA-responding OTII cells express GATA-3, only 7% produce IL-4. Thus Th2-polarization defined solely by IL-4 production does not recognize the diversity of GATA-3-expressing effectors. Low-density arrays were designed to assess the expression of 384 genes by real-time RT-PCR. Extensive early diversification occurred in both responses. SalOVA selectively induced many chemokines and pro-inflammatory cytokines, while alumOVA induced few Th2-associated cytokines. Several cytokines and molecules associated with Th17 cells and follicular helper cells were also induced by both antigens. The transcription factor Helios was exclusively induced in alumOVA-responding OTII cells, and critically not in standard in vitro Th2-polarization systems. Early synchronous up-regulation of Helios and GATA-3 mRNA is paralleled at protein level with largely coincident localization in specific nuclear foci of OTII cells responding to alumOVA. This appears to be consistent with a key role for both transcription regulators in the direction of Th2 responses in vivo. Keywords: In vivo T cell polarization Ovalbumin (OVA)-specific CD4 (OTII) T cells were transferred into C57BL/6 mice that were immunized either with live attenuated OVA-expressing Salmonella (Sal) or with alum-precipitated OVA (alum), or not (Naïve). Gene expression assay was performed on FACS sorted OTII cells (Naïve, Sal, Alum). OTII cells were purified from three independent groups of ten naïve, or SalOVA-immunized or alumOVA-immunized mice.

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