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Rescue Of Dysfunctional Autophagy By Peptide IDR-1018 Attenuates Hyperinflammatory Phenotype Of Cystic Fibrosis Cells

ABSTRACT: Genome-wide gene expression was measured in two cell lines: CF bronchial epithelial cell line IB3-1 (compound heterozygote for the ΔF508 and W1282X CFTR mutations) and the isogenic, CFTR-corrected C38 cell line, after treatment with the flagellin protein FliC, and/or synthetic peptide IDR-1018. Total RNA was obtained from cell lines representing CF and normal epithelial cells after treatment with the fliC protein (that is known to play a role in CF lung inflammation), and/or the peptide IDR-1018 that has anti-inflammatory properties. Comparison of genes and pathways affected by these treatments indicated the role of autophagy process in CF disease.

ORGANISM(S): Homo sapiens

SUBMITTER: Christopher Fjell

PROVIDER: E-GEOD-35391 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Atypical activation of the unfolded protein response in cystic fibrosis airway cells contributes to p38 MAPK-mediated innate immune responses.

Blohmke Christoph J CJ Mayer Matthew L ML Tang Anthony C AC Hirschfeld Aaron F AF Fjell Christopher D CD Sze Marc A MA Falsafi Reza R Wang Shirley S Hsu Karolynn K Chilvers Mark A MA Hogg James C JC Hancock Robert E W RE Turvey Stuart E SE

Journal of immunology (Baltimore, Md. : 1950) 20121026 11

Inflammatory lung disease is the major cause of morbidity and mortality in cystic fibrosis (CF); understanding what produces dysregulated innate immune responses in CF cells will be pivotal in guiding the development of novel anti-inflammatory therapies. To elucidate the molecular mechanisms that mediate exaggerated inflammation in CF following TLR signaling, we profiled global gene expression in immortalized human CF and non-CF airway cells at baseline and after microbial stimulation. Using com ...[more]

PMID: 23105139

Similar Datasets

Rescue Of Dysfunctional Autophagy By Peptide IDR-1018 Attenuates Hyperinflammatory Phenotype Of Cystic Fibrosis Cells

Project description:Genome-wide gene expression was measured in two cell lines: CF bronchial epithelial cell line IB3-1 (compound heterozygote for the ΔF508 and W1282X CFTR mutations) and the isogenic, CFTR-corrected C38 cell line, after treatment with the flagellin protein FliC, and/or synthetic peptide IDR-1018.

2012-11-05 | GSE35391 | GEO

Rescue Of Dysfunctional Autophagy By Peptide IDR-1018 Attenuates Hyperinflammatory Phenotype Of Cystic Fibrosis Cells (RNA-seq)

Project description:Genome-wide gene expression was measured in peripheral blood mononuclear cells (PBMCs) from patients with cystic fibrosis (CF) after treatment in vitro with the flagellin protein fliC, and/or synthetic peptide IDR-1018 to assess patterns of gene expression. The patterns of gene expression suggest that CF cells have a hyperinflammatory phenotype including dysfunctional autophagy processes. The synthetic peptide IDR-1018 attentuates this hyperinflammatory phenotype. Total RNA was obtained from PBMCs obtained from CF patients after treatment with the fliC flagellin protein (that is known to play a role in CF lung inflammation), and/or the peptide IDR-1018 that has anti-inflammatory properties. Comparison of genes and pathways affected by these treatments indicated the role of autophagy process in CF disease.

2012-11-20 | E-GEOD-35394 | biostudies-arrayexpress

Rescue Of Dysfunctional Autophagy By Peptide IDR-1018 Attenuates Hyperinflammatory Phenotype Of Cystic Fibrosis Cells (RNA-seq)

2012-11-20 | GSE35394 | GEO

IDR-1018 treatment of mice infected with Plasmodium berghei, spleen and brain expression data

Project description:Severe malaria encompasses a range of syndromes manifesting systemically or in diverse organs. These are believed to represent the end-stage processes of local parasite sequestration and inflammatory cascades. Classical anti-malarial drugs target parasites only. In treatment of severe disease, adjunctive therapies capable of controlling the inflammatory processes could be beneficial. Innate defense regulator (IDR) peptides display multiple immune modulatory activities. In this study, we assessed peptide IDR-1018, which shows promise as an anti-inflammatory drug, as a lead candidate for adjunctive host-directed therapy of established disease in the P. berghei ANKA model of experimental cerebral malaria (ECM). Intravenously administered IDR-1018 partially protected mice from ECM both prophylactically and in adjunctive treatment with classical anti-malarial drugs. We used transcriptional data from spleens and brains taken early in infection (day 3) of prophylactically treated mice to investigate the protective mechanisms. The microarrays compared spleens and brains from nine IDR-1018 i.v. treated, infected mice (IDR-1018-treated infected) with three saline i.v. treated infected mice (saline-treated infected) and three uninfected untreated control mice (controls). RNA samples were hybridized in randomized order to five Illumina WG-6 v2 BeadChips . No technical replicates were performed.

2012-04-08 | E-GEOD-32007 | biostudies-arrayexpress

Synthetic cationic peptide IDR-1018 modulates human macrophage differentiation

2013-10-16 | GSE40131 | GEO

Synthetic cationic peptide IDR-1018 modulates human macrophage differentiation

Project description:Synthetic, innate defense regulators (IDR) peptides, designed based on natural host defenses peptides, have enhanced immunomodulatory activities and reduced toxicity leading to protection in infection and inflammation models that is dependent on macrophages/monocytes. Here we measured the effect of IDR-1018 on macrophage gene expression during differentiation. Differentiation in the presence of IDR-1018 induced a unique signature of immune responses suggesting that IDR-1018 drives macrophage differentiation towards an intermediate M1-M2 state, enhancing anti-inflammatory functions while maintaining certain pro-inflammatory activities important to the resolution of infection. RNA-seq was performed using the Illumina Genome Analyzer IIx platform. Monocytes were isolated from 3 healthy donors, and left unstimulated or stimulated for 4 hours with 20 μg/ml IDR-1018. For library preparation, 500 ng of total RNA was processed according to the Illumina TruSeq RNA sample preparation guide (Illumina catalogue number FC-122-1002). Briefly, mRNA was purified using poly-dT beads, followed by synthesis of the first and second cDNA strands, end repair addition of an poly-A overhang, and ligation of adapters and unique barcodes, as per the manufacturer’s instructions. DNA enrichment was carried out via a 15-cycle PCR. Following quantification, 8 pM of dsDNA was used for cluster generation on a CBOT instrument (Illumina, San Diego, CA). RNA sequencing was done on a GAIIx instrument (Illumina), performed as a single read run with 51 amplification cycles. Data processing was carried out in house, using CASAVA to convert raw data and demultiplex to FASTQ sequence files. Reads were aligned to the reference genome using TOPHAT, and then mapped to genes using the Bioconductor package GenomeRanges.

2013-10-16 | E-GEOD-40131 | biostudies-arrayexpress

IDR-1018 treatment of mice infected with Plasmodium berghei, spleen and brain expression data

2012-04-09 | GSE32007 | GEO

Transcription profiling of human CD14+ monocytes treated with innate defence regulator peptide IDR-1 in the presence/absence of lipopolyssacharide

Project description:Effect of peptide IDR-1 on CD14+ human monocytes. >br< >br< Effect of peptide IDR-1 on LPS-induced responses in CD14+ human monocytes.>br< >br< Human peripheral blood mononuclear cells (PBMC) were treated with innate defence regulator peptide IDR-1 in the presence and absence of LPS (purified from Pseudomonas aeruginosa) for 4hrs. The objective was to obtain a transcriptional profile of responses induced by IDR-1 and the effect of IDR-1 on LPS-induced transcription.

2007-04-10 | E-FPMI-8 | biostudies-arrayexpress

Neuroprotection by a novel immunomodulatory peptide [P9 mice]

Project description:Perinatal brain injury is a major clinical problem associated with high neonatal mortality and morbidity and an increased risk of life-long chronic disabilities. Despite improved survival rates, the absolute numbers of neurological handicaps of perinatal origin have not decreased. There is currently no pharmacological treatment providing neuroprotction in neonates. As activation of the innate immune response is a key contributing factor to brain injury in both term and preterm infants we investigated the therapeutic potential of novel immunomodulatory innate defence regulator peptides (IDRs) in perinatal brain injury. IDR-1018 significantly reduced the production of inflammatory mediators by LPS-stimulated microglia cells in vitro. IDR-1018 was also neuroprotective in a clinically-relevant animal model of neonatal brain injury, exerting effects on regulatory molecules of TLR-, Ca2+- and p53-signaling. Of utmost importance, IDR-1018 markedly protected both white and grey brain matter when administered after the injury, thus has tremendous applicability to the clinical setting. Here we demonstrate for the first time that peripheral administration of an immunomodulatory peptide is neuroprotective in vivo in a clinically relevant model of perinatal brain damage.

2016-09-17 | GSE36215 | GEO

Reduced Airway Surface pH Impairs Bacterial Killing in the Porcine Cystic Fibrosis Lung

Project description:Cystic fibrosis (CF) is a life-shortening disease caused by mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene. Although bacterial lung infection and the resulting inflammation cause most of the morbidity and mortality, how loss of CFTR first disrupts airway host defense has remained uncertain. We asked what abnormality impairs elimination when a bacterium lands on the pristine surface of a newborn CF airway? To investigate this defect, we interrogated the viability of individual bacteria immobilized on solid grids and placed on the airway surface. As a model we studied CF pigs, which spontaneously develop hallmark features of CF lung disease. At birth, their lungs lack infection and inflammation, but have a reduced ability to eradicate bacteria. Here we show that in newborn wild-type pigs, the thin layer of airway surface liquid (ASL) rapidly killed bacteria in vivo, when removed from the lung, and in primary epithelial cultures. Lack of CFTR reduced bacterial killing. We found that ASL pH was more acidic in CF, and reducing pH inhibited the antimicrobial activity of ASL. Reducing ASL pH diminished bacterial killing in wild-type pigs, and increasing ASL pH rescued killing in CF pigs. These results directly link the initial host defense defect to loss of CFTR, an anion channel that facilitates HCO3- transport. Without CFTR, airway epithelial HCO3- secretion is defective, ASL pH falls and inhibits antimicrobial function, and thereby impairs killing of bacteria that enter the newborn lung. These findings suggest that increasing ASL pH might prevent the initial infection in patients with CF and that assaying ASL pH or bacterial killing could report on the benefit of therapeutic interventions. 11 samples of trachea primary airway epithelial cultures representing CFTR+/+ and CFTR-/- pigs. Pig samples representing 14 bronchus and 12 trachea tissue samples submitted in GSE21071.

2012-03-29 | E-GEOD-36906 | biostudies-arrayexpress

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