Ontology highlight
ABSTRACT:
PROVIDER: PRJNA790974 | ENA |
REPOSITORIES: ENA
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Project description:To determine the global gene occupancy by Wiskott - Aldrich syndrome Protein (WASP) we perform ChIP-seq assay in two lymphoblastoid cell lines. We identify WASP-enriched genes, including several WASP-interaction genes previously reported; in addition, our results suggest the implication of WASP in diverse cellular process
2022-04-18 | GSE126483 | GEO
Project description:<p>The NIH Intramural Skin Microbiome Consortium (NISMC) is a collaboration of investigators with primary expertise in genomics, bioinformatics, large-scale DNA sequencing, dermatology, immunology, allergy, infectious disease, and clinical microbiology. Atopic dermatitis (AD, "eczema") is a chronic relapsing skin disorder that affects ~15% of U.S. children and is associated with $1 billion of medical costs annually. AD is characterized by dry, itchy skin, infiltrated with immune cells. Colonization by Staphylococcus aureus (S. aureus) is ten-fold more common in AD patients and is associated with disease flares. We hypothesize that, in addition to S. aureus, AD may also be associated with additional novel microbes and/or selective shifts of commensal microbes that are relevant to disease progression. The NISMC seeks to define the microbiota that resides in and on the skin and nares of three patient groups, all of whom have eczematous lesions and are currently seen at the NIH Clinical Center: (1) AD patients; (2) Wiskott-Aldrich syndrome (WAS) patients; and (3) Hyper IgE syndrome (HIES) syndrome patients. Examination of the microbiome of patients with WAS or HIES syndromes, both rare immunodeficiencies, will advance our understanding of how an individual's immune system shapes their cutaneous microbial community. We are performing a prospective longitudinal study that follows these groups of patient thorough the cycles of eczema flares, ascertaining clinical data and samples at each stage.</p>
| phs000266 | dbGaP
Project description:This experiment intended to define differential gene expression between germinal center B cells expressing or not the Wiskott-Aldrich syndrome protein in mice. Sequencing was obtained on an Illumina HiSeq2500 system from Dark Zone GCB (DAPI-CD19+ GL7+IgD-CXCR4highCD86low) purified from CTL and GCBcWKO mice (n=4).
2021-06-01 | E-MTAB-10056 | biostudies-arrayexpress
Project description:We knocked out Wiskott-Aldrich Syndrome protein (WASP) in an iPSC line and derived the cells to differentiate into macrophages. We found deficiency of WASP results in overexpression of splicing factors and irregulaly sized nulcear speckles. We performed DIA-MS based quantative proteome analysis for WASP wild-type and deficient macrophages.
2022-04-21 | PXD033326 | Pride
Project description:The pleiotropic RTK Kit can provide cytoskeletal signals that define cell shape, positioning and migration, but the underlying mechanisms are less well understood. Here we provide evidence that Kit signals through WASP (Wiskott-Aldrich Syndrome Protein), the central hematopoietic actin nucleation- promoting factor and regulator of the cytoskeleton. KL-mediated gene expression in WT and WASP-deficient BMMCs was compared and revealed that approximately 30% of all Kit-induced changes were WASP-dependent. The results indicate that Kit signaling through WASP is necessary for normal Kit-mediated filopodia formation, cell survival and gene expression and provide new insight in the mechanism how WASP exerts a strong selective pressure in hematopoiesis.
2009-08-29 | E-MEXP-2282 | biostudies-arrayexpress
Project description:Phagocytosis requires the activation of a plethora of mechanisms that include the activation of the actin cytoskeleton guided by the Arp2/3 complex. These are promoted by activators such as the Wiskott Aldrich Syndrome Protein (WASP) family members. In order to further understand the molecular mechanisms involved in the early events leading the phagocytosis of the pathogenic Mycobacterium tuberculosis, we set out to examine potential roles of miRNAs in phagocytosis using genome-wide expression profiling to identify miRNAs differentially regulated following mycobacterial infection. One of the miRNAs activated upon infection of mouse macrophages with the non-pathogenic Mycobacterium smegmatis, the widely conserved miR-142-3p, was predicted and confirmed to target the Neural-WASP (N-WASP). Upregulating of miR-142-3p in mouse macrophages inversely correlated with levels of N-WASP, upon infection with live pathogenic and non-pathogenic mycobacteria, suggesting an active role of Mycobacterium tuberculosis on the regulation of phagocytosis, at the post-transcriptional level, in host cells. The reduction of N-WASP correlated with a reduced internalization of bacteria per macrophage, independently of the phagocytosis index. Furthermore, the downregulation of WASP levels accompanied those of N-WASP, at early but not at late time points, suggesting a closely regulatory mechanism among both family members, dependent on the time frame of the phagocytosis. Additionally, upregulating of miR-142-3p promoted the change in the protein levels of another predicted and confirmed target, the Cofilin2 protein, in a phagocytosis-independent fashion. Downregulation experiments promoted aberrant morphologic phenotypes in macrophages, similar to observed by others in PBMCs of humans with Wiskott Aldrich Syndrome, suggesting the strong involvement of miR-142-3p on the regulation of the actin machinery in macrophages. Altogether these results show for the first time that miRNAs are involved in the regulation of actin-mediated phagocytosis of pathogenic bacteria and that these are direct targets of Mycobacterium tuberculosis.
2013-06-16 | GSE23429 | GEO