Project description:We observed no transcripts in the whole blood that distinguishes COPD patients and control smokers. In contrast, T cell directed stimulation of whole blood, resulted in altered transcriptomic response and separated COPD patients from control smokers.
Project description:This project tested the use of a volumemetric absorptive microsampling device as a substrate to prepare whole blood for proteomic analysis by LC-MS. We demonstrated that VAMS are a useful substrate to trap proteins from blood, wash them to reduce highly abundant protein species which enabled single shot LC-MS. This led to the detection of more than 1600 proteins in a single run. We further tested different washing reagents and compared VAMS against paper DBS. Finally, we demonstrated an application of using VAMS to prepare archival, frozen whole blood cell pellets from non-small cell lung cancer patients for biomarker studies.
Project description:Venous blood was collected from 54 adult female participants from the PRISM cohort. Whole blood and venous blood was aliquoted. Untargeted metabolomics was performed on whole blood collected on Mitra microsamplers (VAMS, 10 uL), whole blood dried blood spots (DBS, 5-mm punch), and 10 uL of plasma
Project description:Cord blood DNA methylation is associated with numerous health outcomes and environmental exposures. Whole cord blood DNA reflects all nucleated blood cell types, while centrifuging whole blood separates red blood cells by generating a white blood cell buffy coat. Both sample types are used in DNA methylation studies. Cell types have unique methylation patterns and processing can impact cell distributions, which may influence comparability. To evaluate differences in cell composition and DNA methylation between buffy coat and whole cord blood samples, cord blood DNA methylation was measured with the Infinium EPIC BeadChip (Illumina) in 8 individuals, each contributing buffy coat and whole blood samples.
