Project description:In this study the microRNA expression of primary murine (C57BL/6) lung alveolar type II cells belonging to four different conditions was analyzed. Effects of hyperoxia 24 hours group were compared to the normoxia 24 hours and effects of the hyperoxia 6 hours group were compared to the normoxia 6 hours.
Project description:In this study the gene expression of primary murine (C57BL/6) lung alveolar type II cells belonging to four different conditions was analyzed. Effects of hyperoxia 24 hours group (group 2) were compared to the normoxia 24 hours (group 1) and effects of the hyperoxia 6 hours group (group 4) were compared to the normoxia 6 hours (group 3)
Project description:Newborn mouse pups were exposed either to normoxia (21% O2) or to hyperoxia (85% O2) since the day of birth. Lungs were harvested at P2.5, P3.5, P5.5 and P14.5 and homogenized for a downstream microRNA (miR) microarray in order to compare the differential expression of miRs between normoxia and hyperoxia group. Several miRs appeared to be dysregulated, mainly and with a higher significance, at P5.5 and P14.5.
Project description:Primary alveolar type II cells were either treated with vehicle or NaHS for 6 h and 24 h (RS-266 samples). Primary alveolar type II cells treated with GYY4137 at 100 µM concentration were exposed to either 21% O2 or 85% O2 for 24 h (RS-284 samples). Overall no changes in gene expressionwere found in the corrected p values of both microarray studies.
Project description:Newborn mice were concomitantly treated with antagomiR-scrambled (SCR) or antagomiR-34a (A34a) and exposed either to normoxia (21% O2) or hyperoxia (85% O2). Lungs were harvested at two different time-points, P5.5 and P14.5, in order to compare the differential mRNA expression between the 4 groups. Unfortunately, few changes in mRNA expression were detected.
Project description:Primary alveolar type II cells were either treated with vehicle or NaHS for 6 h and 24 h (RS-266 samples). Primary alveolar type II cells treated with GYY4137 at 100 M-BM-5M concentration were exposed to either 21% O2 or 85% O2 for 24 h (RS-284 samples). Overall no changes in gene expressionwere found in the corrected p values of both microarray studies. Four vehicle samples at 6 h of exposure, four NaHS treated samples at 6 h of exposure, four vehicle samples at 24 h of exposure and four NaHS treated samples at 24 h of exposure were used for the RS-266 microarray study. four GYY4137 100 M-BM-5M samples in 21% O2 after 24 h of exposure were compared to four GYY4137 100 M-BM-5M samples in 85% O2 after 24 h of exposure and used for the RS-284 microarray study.
Project description:Hyperoxia has a potential to alter DNA methylation status. We assessed the effect of long term hyperoxia in mouse lung tissue. A total of 24 mice were randomized to hyperoxia (85% O2; 12 animals) or normoxia (21% O2; 12 animals) for 14 days continued with normoxia conditions for all animals for the subsequent 14 days. All mice had free access to food and water and were kept under standard conditions in A-Chambers (O2 – monitor ProOX110, CO2 – monitor ProCO2 P120, BioSpherix). The animals were sacrificed on day 28. Lung tissue was harvested on day 28 after euthanasia with a zolazepam/tiletamine/xylazine/fentanyl cocktail. Tissues samples were snap-frozen in liquid nitrogen immediately after cessation of circulation for the subsequent analysis. Subsequently, DNA methylation profiles in lung tissue were compared by means of methylation microarrays between both groups. We used the Genomic Workbench software (Agilent) to assess the mean methylation status of each DNA fragment (array probe) in each group. We first calculated the normalised, combined Z-scores, representing summation of the left and right Gaussian Z-scores and reflecting the location of a probe log-ratio value in relation to the Gaussian distribution of probes. A strong positive value of the combined Z-score means that a given probe is methylated and strong negative value means that it is unmethylated. Next, we compared the mean combined Z-scores (average methylation patterns) of the probes between hyperoxia and normoxia groups.
Project description:To investigate sex differences at the transcriptome level in human pulmonary microvascular endothelial cells (HPMECs) from healthy male and female donors basally (in normoxia) and in hypoxic conditions. RNA-seq was performed on male (n=3) and female (n=4) HPMECs that were cultured in conditions of physiological shear stress (PMID: 36730645) in normoxia (21% O2) or in hypoxia (1% O2) for either 24 or 48 hours.
