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Expression data from Annexin A1 Ac1-25 vs. Unstimulated human peripheral blood monocytes

ABSTRACT: We used microarrays to detail the global gene expression changes elicited by stimulation of human peripheral blood monocytes from buffy coats with 50µM Annexin A1 peptide Ac1-25 for 2h versus unstimulated control monocytes. Keywords: comparative gene expression study

ORGANISM(S): Homo sapiens

PROVIDER: GSE9080 | GEO | 2007/09/19

SECONDARY ACCESSION(S): PRJNA102601

REPOSITORIES: GEO

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Transcription profiling of human peripheral blood monocytes treated with Annexin A1 Ac1-25 vs. unstimulated

Project description:We used microarrays to detail the global gene expression changes elicited by stimulation of human peripheral blood monocytes from buffy coats with 50ÂµM Annexin A1 peptide Ac1-25 for 2h versus unstimulated control monocytes. Experiment Overall Design: three independent monocyte isolations each were used for stimulated and control cell RNA preparations and subsequent hybridization to arrays according to manufacturers protocols

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Annexin A1 exerts renoprotective effects in experimental crescentic glomerulonephritis

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LncRNA Gm26917 promotes macrophage differentiation by enhancing Annexin A1 ubiquitination in LPS-induced acute liver injury

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ChiP-seq of H3K4me3 in primary unstimulated monocytes from 3 healthy donors buffy coats and from 4 CMML patients

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Transcriptome analysis of primary human monocyte differentiation

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Project description:In the present study, we used a functional proteomic approach to identify Annexin A1 (Anxa1) interacting proteins in the Philadelphia-positive KCL22 cell line. We focused on Anxa1 because it is one of the major proteins upregulated in imatinib-sensitive KCL22S cells versus imatinib-resistant KCL22R. Our proteomic strategy revealed 21 interactors. Bioinformatic analysis showed that most of these proteins are involved in cell death processes. Among the proteins identified, we studied the interaction of Anxa1 with two phosphatases, Shp1 and Shp2, which were recently identified as biomarkers of imatinib sensitivity in patients affected by chronic myeloid leukemia. Our data open new perspectives in the search for annexin-mediated signaling pathways and may shed light on mechanisms of resistance to imatinib that are unrelated to Bcr-Abl activity. For data analysis, we used the MASCOT software (version 2.4) Peptide Mass Fingerprinting search program (http://www.matrixscience.com) selecting NCBInr aug2010 database (11592891 sequences) (http://www.ncbi. nlm.nih.gov), and the following six parameters: specificity of the proteolytic enzyme used for hydrolysis (trypsin); up to 1 missed cleavage; cysteines such as S-carbamidomethylcysteines; unmodified N- and C-terminal ends; unmodified and oxidized methionines; putative Gln-induced pyroGlu formation; a precursor peptide maximum mass tolerance of 400 ppm, and a maximum fragment mass tolerance of 0.6 Da. Using the probability-based Mowse score, the ion score is 10 x Log(p), p being the probability that an eventual match is a random occurrence. All MS/MS spectra with a MASCOT score of or higher than 41 (p =< 0.05) had a good S/N, so the interpretation of the data was unambiguous. MS/MS spectra of peptides that had a MASCOT score below 41 were inspected manually and included in the statistics only in the presence of at least four continuous y or b ions.

2013-08-13 | PXD000030 | Pride

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Homo sapiens

Project description:Expression data from Annexin A1 Ac1-25 vs. Unstimulated human peripheral blood monocytes

| PRJNA102601 | ENA

Role of annexin A2 in muscle repair

Project description:Repair of injured muscle involves repair of injured myofibers through the involvement of dysferlin and its interacting partners, including annexin. Studies with mice and patients have established that dysferlin deficit leads to chronic inflammation and adipogenic replacement of the diseased muscle. However, longitudinal analysis of annexin deficit on muscle pathology and function is lacking. Here we show that unlike annexin A1, but similar to dysferlin, lack of annexin A2 (AnxA2) causes poor myofiber repair and progressive weakening with age. However, unlike dysferlin-deficient muscle, AnxA2-deficient muscles do not exhibit chronic inflammation or adipogenic replacement. Deletion of AnxA2 in dysferlin deficient mice reduces inflammation, adipogenic replacement, and loss in muscle function caused by dysferlin deficit. These results show that: a) AnxA2 facilitates myofiber repair, b) chronic inflammation and adipogenic replacement of dysferlinopathic muscle requires AnxA2, and c) inhibiting AnxA2-mediated inflammation is a novel therapeutic avenue for dysferlinopathy.

2016-10-04 | GSE87557 | GEO

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