Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

ChIP-chip from Ehrlichia chaffeensis-infected THP-1 cells with ankyrin repeat-containing protein, p200

ABSTRACT: Host genes interacting with ankyrin repeat-containing protein, p200, in Ehrlichia chaffeensis-infected monocytes. Chromatin immunoprecipitation (ChIP) together with microarray (chip) analysis demonstrated enrichment of relatively small subset (n=456) of host cell genes associated with molecular and biological processes, many of which are known to be altered during ehrlichial infection. Keywords: ChIP-chip Detection of genes with high signal enrichment by comparing the ratios of p200/input

ORGANISM(S): Homo sapiens

SUBMITTER: Jere McBride

PROVIDER: E-GEOD-13464 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Nuclear translocated Ehrlichia chaffeensis ankyrin protein interacts with a specific adenine-rich motif of host promoter and intronic Alu elements.

Zhu Bing B Nethery Kimberly A KA Kuriakose Jeeba A JA Wakeel Abdul A Zhang Xiaofeng X McBride Jere W JW

Infection and immunity 20090803 10

Ehrlichiae are obligately intracellular bacteria that reside and replicate in phagocytes by circumventing host cell defenses and modulating cellular processes, including host cell gene transcription. However, the mechanisms by which ehrlichiae influence host gene transcription have largely remained undetermined. Numerous ankyrin and tandem repeat-containing proteins associated with host-pathogen interactions have been identified in Ehrlichia species, but their roles in pathobiology are unknown. ...[more]

PMID: 19651857

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Project description:MarekM-bM-^@M-^Ys disease virus (MDV) is an oncovirus causing tumor disease known as MarekM-bM-^@M-^Ys disease (MD) in chicken. Breeding of chickens genetically resistant to MD is considered a vital augment to better control MD. To find the mechanism underlying the genetic resistance to MD, a genomic structural variation, copy number variation (CNV), was examined in inbred MD-resistant and -susceptible chicken lines by using the comparative genomic hybridization (CGH) technique. A total of 45 copy number variation regions (CNVRs) were found spanning across 3,297,038 bp in length of the chicken genome in 4 lines of chickens. Ten CNVRs were selectively confirmed with quantitative real-time PCR. The comparison between the resistant and susceptible chicken lines revealed 28 differentially presented CNVRs, which are functionally involved in immune response, cell proliferation in midbrain, G-protein coupled receptor signaling pathway, and protein-glutamine gamma-glutamyltransferase activity. Two CNVRs that are related with MD-resistance and M-bM-^@M-^Ssusceptibility were also found transmitted to descendent recombinant congenic lines that differ in susceptibility to MD. A positive correlation was identified between the CNVRs and gene expression, indicating the importance of gene expression dosage in disease resistance. We also found the overlapping between the CNVR region and the MarekM-bM-^@M-^Ys disease trait related quantitative trait loci (QTLs). In conclusion, our data provided additional information elucidating one of possible mechanisms underlying of genetic resistance to MD. The findings may eventually lead to better strategies for genetic improvement of resistance to MD in poultry. L63: highly resistant to MD; L72: highly susceptible to MD; RCS-L: moderate resistant to MD; RCS-M: moderate susceptible to MD Red blood cell DNAs were isolated from L63, L72, RCS-L and RCS-M and then labeled with Cy3. DNA from Red Junglefowl was labeled with Cy5 as reference and mixed with Cy3 labeled DNA, then hybridized to the 385K chicken tiling array. The hybridization, normalization and segmentation analysis were performed by NimbleGen Systems Inc. (Madison, USA). A detailed description of their technical specifics can be found on http://www.nimblegen.com/products/lit/lit.html. Briefly, the segments with five or more probes having a mean log2 ratio greater than M-BM-10.5 (0.5_5) were chosen as candidate CNVs.

Dataset Information

ChIP-chip from Ehrlichia chaffeensis-infected THP-1 cells with ankyrin repeat-containing protein, p200

Publications

Nuclear translocated Ehrlichia chaffeensis ankyrin protein interacts with a specific adenine-rich motif of host promoter and intronic Alu elements.

Similar Datasets

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