Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

A lack of secretory leukocyte protease inhibitor (SLPI) causes defects in granulocytic differentiation.

ABSTRACT: Expression data from CD34+ hematopoietic cells transduced with control or anti-SLPI shRNA, serum starved and treated with G-CSF. CD34+ hematopoietic cells were isolated from the bone marrow of healthy individuals, transduced with lenitvirus-based RFP-expressed shRNA constructs targeting SLPI mRNA or scrambled control shRNA. After 3 days of the transductions, RFP+ cells were sorted, serum starved for 24 hours and treated with G-CSF 10 ng/ml for 18 hours. Total RNA of sorted cells was isolated and used for Affymetrix Exome arrays.

ORGANISM(S): Homo sapiens

SUBMITTER: Siarhei Kandabarau

PROVIDER: E-GEOD-53353 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

ACCESS DATA

Publications

A lack of secretory leukocyte protease inhibitor (SLPI) causes defects in granulocytic differentiation.

Klimenkova Olga O Ellerbeck Wienke W Klimiankou Maksim M Ünalan Murat M Kandabarau Siarhei S Gigina Anna A Hussein Kais K Zeidler Cornelia C Welte Karl K Skokowa Julia J

Blood 20131218 8

We identified diminished levels of the natural inhibitor of neutrophil elastase (NE), secretory leukocyte protease inhibitor (SLPI), in myeloid cells and plasma of patients with severe congenital neutropenia (CN). We further found that downregulation of SLPI in CD34(+) bone marrow (BM) hematopoietic progenitors from healthy individuals resulted in markedly reduced in vitro myeloid differentiation accompanied by cell-cycle arrest and elevated apoptosis. Reciprocal regulation of SLPI by NE is well ...[more]

PMID: 24352879

Similar Datasets

Project description:Macrophage polarization between the M2 (repair, pro-tumorigenic) and M1 (inflammatory) phenotypes is seen as a continuum of states. The detailed transcriptional events and signals downstream of CSF-1R that contribute to amplification of the M2 phenotype and suppression of the M1 phenotype are largely unknown. Macrophage CSF-1R pTyr-721 signaling promotes cell motility and enhancement of tumor cell invasion in vitro. Combining analysis of cellular systems for CSF-1R gain-of-function and loss-of-function with bioinformatic analysis of the macrophage CSF-1R pTyr-721-regulated transcriptome, we uncovered miR-21 as a downstream molecular switch controlling macrophage activation and identified ERK1/2 and NF-M-NM-:B as CSF-1R pTyr-721-regulated signaling nodes. We show that CSF-1R pTyr-721 signaling suppresses the proinflammatory phenotype, predominantly by induction of miR-21. Profiling of the miR-21-regulated mRNAs revealed that 80% of the CSF-1-regulated canonical miR-21 targets are pro-inflammatory molecules. Additionally, miR-21 positively regulates M2 marker expression. Moreover, miR-21 feeds back to positively regulate its own expression and to limit CSF-1R-mediated activation of ERK1/2 and NF-M-NM-:B. Consistent with an anti-inflammatory role of miRNA-21, intraperitoneal injection of mice with a miRNA-21 inhibitor increases the recruitment of inflammatory monocytes and enhances the peritoneal monocyte/macrophage response to lipopolysaccharide (LPS). M-bM-^@M-^C These results identify the macrophage miR-21 network as a novel target for controlling macrophage polarization. We performed microarray-based analysis on four mouse macrophage cell lines, two CSF-1R pTyr-721-expressing cell lines (M-/-.WT and M-/-.3ABY721) and two CSF-1R Tyr-721-deficient lines (M-/-.Y721F and M-/-.3AB). Total RNA (two biological replicates) was extracted from CSF-1-starved cells (UR) or from cells constitutively grown in CSF-1 (CONST). Additionally, CSF-1-starved M-/-.WT and M-/-.Y721F cell lines were stimulated with CSF-1 for 0min, 20 min, 60 min and 180 min and used for total RNA extraction. Total RNA preparations with Ribosomal Integrity Numbers (RIN) > 9.5 were used for microarray analysis. A total of 100 ug/cell line/replicate was used for gene expresion analysis on the Affymetrix Mouse Gene ST1.0 chips at the Genomics Core at Einstein, according to manufacturerM-bM-^@M-^Ys instructions. Differential expression analysis was performed using the M-bM-^@M-^XlimmaM-bM-^@M-^Y package of R/Bioconductor to identify significantly differentially expressed mRNAs over time, in response to CSF-1 treatment and to the genotype. CSF1-regulated genes were identified according to the cutoff with both expression folder change > 1.5 and p-value < 0.05.

Dataset Information

A lack of secretory leukocyte protease inhibitor (SLPI) causes defects in granulocytic differentiation.

Publications

A lack of secretory leukocyte protease inhibitor (SLPI) causes defects in granulocytic differentiation.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure