Project description:Acquisition of a new strain of non-typeable Haemophilus influenzae (NTHi) is often associated with exacerbation of chronic obstructive pulmonary disease (COPD). We have previously reported that COPD patients who are homozygous null for SIGLEC14 gene is less susceptible to COPD exacerbation than those who have wild-type allele with functional SIGLEC14 gene. In order to gain insight into the mechanism behind the COPD exacerbation, and to find new clues that may lead to the discovery of objective biomarker of COPD exacerbation, Siglec-14/THP-1 and Siglec-5/THP-1 cell lines, which mimic monocytes from homozygous wild-type and homozygous SIGLEC14-null person, respectively, were incubated with or without NTHi, and their gene expression profiles were compared by using Affymetrix Human Genome U133 Plus 2.0 Array. Four samples (2 cell lines x 2 conditions) were analyzed. No replicates were made.
Project description:To study the effects of treatment with an inhaled PI3Kδ inhibitor during recovery from an exacerbation of Chronic Obstructive Pulmonary Disease (COPD) due to corrective effects on neutrophils that display dysregulated migration characteristics. We aimed to develop novel induced sputum endpoints to demonstrate changes in neutrophil phenotype and proof of mechanism of action in the lung.
Project description:To study the effects of treatment with an inhaled PI3Kδ inhibitor during recovery from an exacerbation of Chronic Obstructive Pulmonary Disease (COPD) due to corrective effects on neutrophils that display dysregulated migration characteristics. We aimed to develop novel induced sputum endpoints to demonstrate changes in neutrophil phenotype and proof of mechanism of action in the lung.
Project description:Background: CD8 cells seem to play an important role in the pathogenesis of chronic obstructive pulmonary disease (COPD). However, relatively little is known about their phenotype and function. Aims: To define the transcriptome of pulmonary CD8 cells in COPD and compare to paired circulating CD8 cells and smoker control pulmonary CD8 cells. COPD was defined according to the Global initiative for chronic Obstructive Lung Disease guidelines. Severity of disease was defined according to the patients lung function. In particular the forced evpiratroy volume in 1 second (FEV1).
Project description:Acquisition of a new strain of non-typeable Haemophilus influenzae (NTHi) is often associated with exacerbation of chronic obstructive pulmonary disease (COPD). We have previously reported that COPD patients who are homozygous null for SIGLEC14 gene is less susceptible to COPD exacerbation than those who have wild-type allele with functional SIGLEC14 gene. In order to gain insight into the mechanism behind the COPD exacerbation, and to find new clues that may lead to the discovery of objective biomarker of COPD exacerbation, Siglec-14/THP-1 and Siglec-5/THP-1 cell lines, which mimic monocytes from homozygous wild-type and homozygous SIGLEC14-null person, respectively, were incubated with or without NTHi, and their gene expression profiles were compared by using Affymetrix Human Genome U133 Plus 2.0 Array.
Project description:To profile lung miRNA expression in our mouse model of cigarette smoke-induced chronic obstructive pulmonary disease, we employed the Agilent unrestricted Mouse miRNA (8 x 15k arrays per slide, AMADID Number: 021828, Sanger Version 12) platform as a discovery tool to identify miRNAs of interest in the development of experimental chronic obstructive pulmonary disease. Mice were exposed to cigarette smoke (or room air) for 4, 6, 8, 12 weeks, lungs were excised, and total RNA isolated.
