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Effect of Rac1 haploinsufficiency on the gene expression profile of mouse endothelial cells

ABSTRACT: The therapeutic potential of neurotrophic factors has been hampered by their inability to achieve adequate tissue penetration. Brain blood vessels, however, could be an alternative target for neuro-salvage therapies by virtue of their close proximity to neurons. Here we show that hemizygous deletion of Rac1 in mouse endothelial cells (ECs) attenuates brain injury and edema following focal cerebral ischemia. To explore the mechanisms whereby decrease of Rac1 in ECs provide neuroprotection, ECs were derived from Rac1+/+ and Rac1+/- mice. Microarray analysis was performed to determine the differential gene expression between Rac1+/+ and Rac1+/- ECs.

ORGANISM(S): Mus musculus

PROVIDER: GSE15003 | GEO | 2009/03/16

SECONDARY ACCESSION(S): PRJNA114719

REPOSITORIES: GEO

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Effect of Rac1 haploinsufficiency on the gene expression profile of mouse endothelial cells

Project description:The therapeutic potential of neurotrophic factors has been hampered by their inability to achieve adequate tissue penetration. Brain blood vessels, however, could be an alternative target for neuro-salvage therapies by virtue of their close proximity to neurons. Here we show that hemizygous deletion of Rac1 in mouse endothelial cells (ECs) attenuates brain injury and edema following focal cerebral ischemia. To explore the mechanisms whereby decrease of Rac1 in ECs provide neuroprotection, ECs were derived from Rac1+/+ and Rac1+/- mice. Microarray analysis was performed to determine the differential gene expression between Rac1+/+ and Rac1+/- ECs. Rac1+/+ and Rac1+/- ECs were cultured to subconfluence. Total RNA was extracted and reverse transcribed. Rac1+/+ (n = 2) and Rac1+/- (n = 2) EC cDNAs were labeled with Cy3 and Cy5, respectively, and equimolar mixtures of labeled Rac1+/+ and Rac1+/- probes were hybridized to 2 slides (sample #21648, #21649). Additionally, Rac1+/+ (n = 2) and Rac1+/- (n=2) EC cDNAs labeled with Cy5 and Cy3 (dye-swapping) were hybridized to 2 slides (sample #21650, #21651). Comparison of signal intensities between Rac1+/+ (channel 2) and Rac1+/- (channel 1) was conducted on each slide (sample), and the ratio of intensities from 4 slides were statistically assessed for each gene feature to investigate differential gene expression.

2009-03-15 | E-GEOD-15003 | biostudies-arrayexpress

Endogenous RAC1 P29S in mouse melanoma

Project description:We studied the effects of endogenous expression of the melanoma oncogene RAC1 P29S in BRAF V600E;PTEN hemizygous mouse melanomas.

2018-08-10 | GSE118344 | GEO

Microglial Rac1 is essential for experience-dependent brain plasticity and cognitive performance

Project description:Microglia, the largest population of brain immune cells, continuously interact with synapses to maintain brain homeostasis. We aimed at understanding the role of Rac1 on microglia functions. Here, we used conditional cell-specific gene targeting in mice with multi-omics approaches, and demonstrated that the RhoGTPase Rac1 was an essential requirement for the microglia to sense and interpret the brain microenvironment, and for crucial microglia-synapse crosstalk driving experience-dependent plasticity, a fundamental brain property impaired in several neuropsychiatric disorders.

2023-10-23 | GSE244773 | GEO

Transcriptome of K14 V12 Rac1 mice

Project description:Wholeskin from transgenic mice overexpressing epidermal specific (K14) activated mutant (V12) Rac1 analyzed with Illumina MouseRef8 v2 Gene Expression arrays Three V12 Rac1 7 day old pups compared to three 7 day old litter-mate controls

2016-06-13 | E-GEOD-71683 | biostudies-arrayexpress

Interacting partners of Rac1 (P29S/Q61L) compared to constitutively active Rac1 (Q61L)

Project description:Interactors of double mutant Rac1 (P29S/Q61L) compared to constitutively active Rac1 (Q61L).

2019-11-12 | PXD013941 | Pride

Microglial Rac1 is essential for experience-dependent brain plasticity and cognitive performance

Project description:Here, we used conditional cell-specific gene targeting in mice with multi-omics approaches, and demonstrated that the RhoGTPase Rac1 was an essential requirement for the microglia to sense and interpret the brain microenvironment, and for crucial microglia-synapse crosstalk driving experience-dependent plasticity. Phosphoproteomics profiling detected a large modulation of RhoGTPase signaling, predominantly of Rac1, in microglia of mice exposed to an environmental enrichment protocol. Ablation of microglial Rac1 affected pathways involved in microglia-synapse communication, disrupted experience-dependent synaptic remodeling, and blocked the gains in learning, memory and sociability induced by environmental enrichment.

2023-10-23 | PXD045719 | Pride

Transcription profiling of rac1 knock-down zebrafish embryos

Project description:Phenotypic, proteome and transcriptome analysis of rac1 knockdown in zebrafish embryos

2008-12-31 | E-MEXP-1593 | biostudies-arrayexpress

Meiotic crossover landscape within RAC1 disease resistance gene

Project description:To study recombination at the fine-scale, we used high-throughput sequencing of 300 to 1,000 crossovers within the RAC1 R gene hotspot. This revealed focused intragenic crossovers, overlapping exons encoding the TIR, NBS and LRR domains. To examine the role of recombination pathways, we repeated this experiment in recq4a recq4b, fancm and recq4a recq4b fancm mutants. Finally, in order to investigate how varying patterns of interhomolog divergence influence local patterns of crossover frequency, we repeated RAC1 pollen typing sequencing in different F1 hybrids.

2018-07-01 | E-MTAB-6333 | biostudies-arrayexpress

Involution day 2, mouse mammary gland Rac1 knockout mice.

Project description:The microarray was conducted from RNA isolated from mouse mammary glands harvested from Involution day 2 mice. Cre-mediated specific Rac1 gene deletion in luminal mammary epithelial cells was achieved by crossing Rac1fx/fxRosaYFP mice with WAPiCreTg/â¢ mice to produce Rac1fx/fxYFP ;WAPiCreTg/â¢ (Rac1-/-) mice. Rac1fx/fxYFP mice that lacked the Cre gene were used as wild type (WT) controls. The RNA was isolated from the inguinal gland 4 for each mouse

2016-10-31 | E-MTAB-5019 | biostudies-arrayexpress

Transcriptome of K14 V12 Rac1 mice

Project description:Wholeskin from transgenic mice overexpressing epidermal specific (K14) activated mutant (V12) Rac1 analyzed with Illumina MouseRef8 v2 Gene Expression arrays

2016-06-13 | GSE71683 | GEO

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