Influence of inflammation on the expression and activity of glycosyltransferases in human bronchial mucosa
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
SUBMITTER: Steven Head
PROVIDER: E-GEOD-27594 | biostudies-arrayexpress |
REPOSITORIES: biostudies-arrayexpress
Similar Datasets
Project description:Bronchial inflammation is common in patients suffering from Cystic Fibrosis (CF) and is commonly responsible for mortality from CF. It is known that this inflammation has an influence over glycosylation events in bronchial mucins and abnormal glycosylation has been described in CF. These abnormalities can not be directly linked to CF, as the cells that secrete bronchial mucins do not express CFTR.
2011-03-02 | GSE27594 | GEO
Project description:Chronic infection of the lungs by bacteria such as Pseudomonas aeruginosa plays an important role in the natural history of Cystic Fibrosis (CF). Altered mucin secretions and glycosylations are hallmarks of bacterial infections but their exact contributions to the development of chronic infection and/or inflammation remain to be established. We studied the lung environment in newborn CFTR-/- pigs, which closely mirrors the human CF phenotype at the levels of mucin glycosylation, mucociliary transport (MCT) and immune response to P. aeruginosa infections. We show an increased sialylation of mucins from the tracheal mucosa of CFTR-/- pigs, which is also associated to increased Pseudomonas aeruginosa adherence. RNA-seq analysis did not show any altered expression of inflammatory genes, nor of sialylation enzymes. CFTR-/- piglets were unable to clear P. aeruginosa from the airways, leading to increased bacteria time of residence in the airways. We propose that alterations in mucin sialylation and MCT directly contribute to the early development of a favorable environment for bacterial colonization of the CF airways in the absence of an intrinsic inflammation.
2020-06-01 | GSE99862 | GEO
Project description:Long non-coding RNAs (lncRNAs) have emerged recently as key regulatory molecules with diverse roles at almost every level of the regulation of gene expression. The roles of these RNAs in the pathogenesis of cystic fibrosis (CF); a lethal multisystem, autosomal recessive disorder have yet to be explored. Our aim was to examine the expression profile of lncRNA, in the airway epithelium of people with CF. We examined the expression of 30,586 lncRNAs by microarray (Human LncRNA Array v3.0, Arraystar, Inc), in vivo in bronchial cells isolated from endobronchial brushings obtained from CF and non-CF individuals. In total, we identified 1,063 lncRNAs with differential expression between CF and non-CF individuals (fold changeM-bM-^IM-%3, pM-bM-^IM-$0.001). The microarray also contained probes for ~26,109 protein coding transcripts, of which 720 were differentially expressed between CF and non-CF brush samples (fold changeM-bM-^IM-%3, pM-bM-^IM-$0.001). Confirmation of a selection of differentially expressed coding mRNA and lncRNA transcripts such as TLR8 and XIST was achieved using qRT-PCR. Gene ontology bioinformatics analysis, highlighted that many processes over-represented in the CF bronchial epithelium are related to inflammation. These data show a significantly altered lncRNA and mRNA expression profile in CF bronchial cells in vivo. Dysregulation of some of these lncRNAs may play important roles in the chronic infection and inflammation that exists in the lungs of people with CF. RNA was extracted from bronchial epithelial cells obtained from bronchial brushings at bronchoscopy. Three individual biological replicates from each group (Non-CF and CF) were profiled by microarray.
2014-03-10 | E-GEOD-55146 | biostudies-arrayexpress
Project description:Cystic fibrosis (CF) is characterized by chronic inflammation and excessive cytokines secretion in the lung. Isogenic human CF bronchial epithelial (CFBE41o-) cell lines stably expressing wt-CFTR (WTBE) or F508del mutant (CFBE) are widely used tools in understanding responses to stimuli or drugs and CF pathogenesis in vitro. However, their intrinsic cellular differences in culture are unknown. Hence, we performed integrative analyses at protein, mRNA and chromatin levels on these isogenic cell lines cultured in submerged and transwell condition. CFBE and WTBE cells displayed different secretion patterns on IL-6, IL-8, CXCL1, CXCL10, and CCL5 . The ALI culture dramatically increased cytokines secretion in both cells. ATAC-seq results showed that CFBE cells exhibited higher genome-wide chromatin accessibility than WTBE cells in both culture methods, but the relative openness of cytokine genes between two cells varied individually. Differentially expressed genes between two cell lines from mRNA sequencing were highly concentrated in immunity-related pathways. While the mRNA stability of CXCL10 and CXCL1 exhibited the most significant differences between cell lines in SUB culture, most cytokines had comparable mRNA stabilities within same culture method. Moreover, polarization of cells via transwell culture remodeled the chromatin accessibility and transcriptome. This multilayered studies presents a comprehensive baseline activities of CFBE and WTBE cells, further facilitating their usage and data interpretation as CF cell models.
2022-03-01 | GSE186918 | GEO
Project description:Cystic fibrosis (CF) is characterized by chronic inflammation and excessive cytokines secretion in the lung. Isogenic human CF bronchial epithelial (CFBE41o-) cell lines stably expressing wt-CFTR (WTBE) or F508del mutant (CFBE) are widely used tools in understanding responses to stimuli or drugs and CF pathogenesis in vitro. However, their intrinsic cellular differences in culture are unknown. Hence, we performed integrative analyses at protein, mRNA and chromatin levels on these isogenic cell lines cultured in submerged and transwell condition. CFBE and WTBE cells displayed different secretion patterns on IL-6, IL-8, CXCL1, CXCL10, and CCL5 . The ALI culture dramatically increased cytokines secretion in both cells. ATAC-seq results showed that CFBE cells exhibited higher genome-wide chromatin accessibility than WTBE cells in both culture methods, but the relative openness of cytokine genes between two cells varied individually. Differentially expressed genes between two cell lines from mRNA sequencing were highly concentrated in immunity-related pathways. While the mRNA stability of CXCL10 and CXCL1 exhibited the most significant differences between cell lines in SUB culture, most cytokines had comparable mRNA stabilities within same culture method. Moreover, polarization of cells via transwell culture remodeled the chromatin accessibility and transcriptome. This multilayered studies presents a comprehensive baseline activities of CFBE and WTBE cells, further facilitating their usage and data interpretation as CF cell models.
2022-03-01 | GSE186919 | GEO
Project description:Long non-coding RNAs (lncRNAs) have emerged recently as key regulatory molecules with diverse roles at almost every level of the regulation of gene expression. The roles of these RNAs in the pathogenesis of cystic fibrosis (CF); a lethal multisystem, autosomal recessive disorder have yet to be explored. Our aim was to examine the expression profile of lncRNA, in the airway epithelium of people with CF. We examined the expression of 30,586 lncRNAs by microarray (Human LncRNA Array v3.0, Arraystar, Inc), in vivo in bronchial cells isolated from endobronchial brushings obtained from CF and non-CF individuals. In total, we identified 1,063 lncRNAs with differential expression between CF and non-CF individuals (fold change≥3, p≤0.001). The microarray also contained probes for ~26,109 protein coding transcripts, of which 720 were differentially expressed between CF and non-CF brush samples (fold change≥3, p≤0.001). Confirmation of a selection of differentially expressed coding mRNA and lncRNA transcripts such as TLR8 and XIST was achieved using qRT-PCR. Gene ontology bioinformatics analysis, highlighted that many processes over-represented in the CF bronchial epithelium are related to inflammation. These data show a significantly altered lncRNA and mRNA expression profile in CF bronchial cells in vivo. Dysregulation of some of these lncRNAs may play important roles in the chronic infection and inflammation that exists in the lungs of people with CF.
2014-03-10 | GSE55146 | GEO
Project description:Hepatobiliary disease causes significant morbidity in people with cystic fibrosis (CF), yet this problem remains understudied. We previously found that newborn CF pigs have microgallbladders with significant luminal obstruction in the absence of infection and inflammation. In this study, we sought to better understand the early pathogenesis of CF pig gallbladder disease. We hypothesized that loss of CFTR would impair gallbladder epithelium anion/liquid secretion and increase mucin production. By single cell RNA sequencing, we identified a single epithelial cell population that co-expressed CFTR, MUC5AC, and MUC5B. By bulk tissue RNA sequencing, there was no significant difference in the epithelial expression of gel-forming mucins between non-CF and CF pig gallbladders. Also, there were minimal transcriptional changes in CF relative to non-CF.
2020-10-28 | GSE152145 | GEO
Project description:Our laboratory has held a long interest in the glycosylation changes seen on the surface of airway epithelia of patients with the disease cystic fibrosis (CF). Experiments from our laboratory have detailed a CF glycosylation phenotype of increased Fuca1,3/4 and decreased Fuca1,2 and sialic acid on the surfaces of immortalized and primary CF cells compared to non-CF cells. Further, we have shown that gene transfer and subsequent expression of a wild type CF plasmid in CF airway cells results in correction or reversal of this glycosylation phenotype. We hypothesize that the changes in glycosylation seen in CF cells are key in the pathophysiology of the cystic fibrosis airway disease. For example, it has been shown that Pseudomonas aeruginosa, a bacterium that has a predilection for colonizing CF airways, adheres to asialylated glycolipids and glycoconjugates with terminal Fuca1,3/4. One focus of our laboratory is to elucidate the etiology of the glycosylation changes seen in CF cells and the mechanism by which these changes are reversed by wild type CFTR gene transfer.
2011-01-07 | GSE26482 | GEO
Project description:Our laboratory has held a long interest in the glycosylation changes seen on the surface of airway epithelia of patients with the disease cystic fibrosis (CF). Experiments from our laboratory have detailed a CF glycosylation phenotype of increased Fuca1,3/4 and decreased Fuca1,2 and sialic acid on the surfaces of immortalized and primary CF cells compared to non-CF cells. Further, we have shown that gene transfer and subsequent expression of a wild type CF plasmid in CF airway cells results in correction or reversal of this glycosylation phenotype. We hypothesize that the changes in glycosylation seen in CF cells are key in the pathophysiology of the cystic fibrosis airway disease. For example, it has been shown that Pseudomonas aeruginosa, a bacterium that has a predilection for colonizing CF airways, adheres to asialylated glycolipids and glycoconjugates with terminal Fuca1,3/4. One focus of our laboratory is to elucidate the etiology of the glycosylation changes seen in CF cells and the mechanism by which these changes are reversed by wild type CFTR gene transfer. We propose to study the gene expression of immortalized and primary CF and non-CF airway epithelial cells: 1. CF/T43 vs. BEAS-2B cells. These are two widely used immortalized airway cell lines that we have used extensively in the past. 2. C38 cells; C38 cells are IB3 cells expressing wtCFTR. The experimental focus is to elucidate the etiology of the glycosylation changes seen in Cystic Fibrosis (CF) cells and the mechanism by which these changes are reversed by wild type CFTR gene transfer. To do so, the gene expression of immortalized and primary CF and non-CF airway epithelial cells were compared and studied. Cell lines used were CF/T43 and BEAS-2B, both widely used immortalized airway cell lines. Other cell lines studied included C38 cell lines (clonal derivatives of IB3 cells expressing wtCFTR).
2011-01-07 | E-GEOD-26482 | biostudies-arrayexpress
Project description:Dr. Clausen's laboratory is interested in the structure, biosynthesis and genetic regulation of glycoconjugates, with a major focus on mucins. This laboratory is studying the glycosylation and secretion process of mucins and biological functions involving mucins. This lab is also interested in receptor modulation mediated by glycosylation or through glycosphingolipids. We have a particular interest in understanding how mucin type O-glycosylation is regulated. Mucin type O-glycosylation is controlled by the ppGalNAc-transferase multigene family. An estimated 23 iso-forms belong to this family, so the specific involvement of each individual iso-form in any given organ seems complex to understand. An initial attempt to comprehend how this multigene family regulates mucin type O-glycosylation, is to get insight into which iso-forms are expressed in different organs and cell types. For this reason we have generated monoclonal antibodies towards 7 iso-forms, and the list of ppGalNAc-T iso-form specific monoclonals is currently growing. We have done some immuno histochemistry on lung using the available monoclonals, but are keen on assessing the number of ppGalNAc-T's expressed in lung as determined this Glyco-array. We have focused on lung because a number of ppGalNAc-T acceptor polypeptides, belonging to the mucin gene family, are expressed in this organ. An RNA sample pooled from two independent adult human healthy lung tissue samples was analyzed
2010-11-30 | E-GEOD-25712 | biostudies-arrayexpress