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Expression data from skin of bovines infested with ticks

ABSTRACT: The aim of this work was to access the early immune response triggered by R. microplus larvae attachment in previously selected resistant and susceptible animals in a bovine F2 population derived from Gyr (Bos indicus) × Holstein (Bos taurus) crosses. We used microarray data both to access the changes in gene expression over the course of the first 48 hours after tick infestation as constrasting the phenotypically diferent groups.

ORGANISM(S): Bos taurus

PROVIDER: GSE57907 | GEO | 2014/05/23

SECONDARY ACCESSION(S): PRJNA248399

REPOSITORIES: GEO

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Expression data from skin of bovines infested with ticks

Project description:The aim of this work was to access the early immune response triggered by R. microplus larvae attachment in previously selected resistant and susceptible animals in a bovine F2 population derived from Gyr (Bos indicus) x Holstein (Bos taurus) crosses. We used microarray data both to access the changes in gene expression over the course of the first 48 hours after tick infestation as constrasting the phenotypically diferent groups. From a bovine F2 population, six tick-resistant (R) and seven tick-susceptible (S) animals were used in this experiment. Skin biopses were taken at the feeding sites before infestation (0 hour), 24 and 48 hours after tick infestation in each animal.

2014-05-23 | E-GEOD-57907 | biostudies-arrayexpress

Microarray analysis of gene expression in the skin of tick-naïve and tick-infested Holstein-Friesian and Brahman cattle

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Transcription profiling of Bos taurus skin of tick naive and tick-infested Holstein-Friesian and Brahman breeds

Project description:This experiment was undertaken to document changes in gene expression in the skin of tick-resistant Brahman (Bos indicus) and tick-susceptible Holstein-Friesian (Bos taurus) cattle prior to, and following, infestation with the cattle tick Rhipicephalus (Boophilus) microplus Experiment Overall Design: RNA was extracted from skin samples of tick-naÃ¯ve cattle (animals with no previous R.microplus exposure) and tick-infested cattle after a period of successive, heavy infestations with R. microplus. Skin samples taken from tick-infested animals were taken at sites where tick larvae (approximately 24 h old) were attached to the skin sample. Skin samples were of 8 mm diameter and full skin thickness (approximately 10 mm). RNA samples from 12 animals (3 tick-naive Holstein-Friesian, 3 tick-naive Brahman, 3 tick-infested Holstein-Friesian and 3 tick-infested Brahman) were processed and hybridised to individual slides.

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R. microplus expression profiles of larvae pre-attachment and feeding adult female stages in B. indicus and B. taurus

Project description:Comparative microarray analysis of Rhipicephalus (Boophilus) microplus expression profiles of larvae pre-attachment and feeding adult female stages on Bos indicus and B. taurus cattle Global analysis of gene expression changes in R. microplus during larval, pre-attachment and early adult stages of its life cycle feeding on Bos indicus and Bos taurus cattle were compared using gene expression microarray analysis. Among the 13 601 R. microplus transcripts from BmiGI Version 2 we identified 297 up and 17 down regulated transcripts were differentially expressed between R. microplus feeding on tick resistant cattle [Bos indicus (Brahman)] compared to R. microplus feeding on tick susceptible cattle [Bos taurus (Holstein-Friesian)]. These include genes encoding enzymes involved in primary metabolism, and genes related to stress, defence, cell wall modification, cellular signaling, receptor and cuticle. Microarrays were validated by qRT-PCR analysis of selected transcripts including the validation of three housekeeping genes. The analysis of all tick stages under survey suggested a coordinated regulation of defence proteins, proteases, and protease inhibitors to achieve successful attachment and survival of R. microplus on different host breeds particularly Bos indicus cattle.

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R. microplus expression profiles of larvae pre-attachment and feeding adult female stages in B. indicus and B. taurus

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Cattle lymph nodes: Control vs. Larva tick-infested; Control vs. Adult tick-infested; Larva tick-infested vs. Adult tick-infested

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Peripheral WBC from Brahman and Holstein-Friesian cattle infested with the cattle tick Rhipicephalus microplus

Project description:This trial was undertaken to examine the perhipheral cellular and antibody response of cattle following infestation with the cattle tick, Rhipicephalus microplus. The information from the Affymetrix gene expression data is used to complement other measurements of immune function such as cellular subset composition and antibody response in cattle of high (Brahman) and low (Holstein-Friesian) resistance to the cattle tick. Keywords: Disease state analysis

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Transcription profiling of Bos taurus white blood cells from Brahman and Holstein-Friesian cattle infested with the cattle tick Rhipicephalus microplus

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Project description:Here we describe a genome-wide analysis of copy number variations (CNVs) in Chinese domestic cattle by using array comparative genomic hybridization (array CGH) and quantitative PCR (qPCR). We conducted array CGH analysis on 30 male cattle individuals, animals from consisting of 12 breeds of Bos taurus/Bos indicus, 1 Bos grunniens and and two ones of Bubalus bubalis breeds for with beef, and/or dairy or dual purpose. We identified over 470 candidate CNV regions (CNVRs) in Bos B. taurus/B. indicus; 118 candidate CNV regions (CNVRs) in B. grunniens, 139 CNVRs in B. bubalis. Furthermore, based on the Y haplotypes of B. taurus/ B. indicus, Wwe also identified 69, 337, and 251 candidate CNV regions (CNVRs) in the sub-groups of Y1, Y2 and Y3 haplotypes.

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Transcriptional responses in bovine skin during blood feeding of the cattle tick, Rhipicephalus microplus.

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