DNA methylation profilings of Blood Cell collected from CELSS 180-day experiment
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ABSTRACT: In this study, we designed a space simulation study, named “4 Subjects 180-Day Controlled Ecological Life Support System (CELSS) Integration Experiment”, which took place in Shenzhen, China, from June to December 2016. In this experiment, four subjects (3 males and 1 female) lived for 180 days in an enclosed simulated cabin, and multiple-sampling-point DNA methylation data was collected to conduct the epigenic analysis. Peripheral whole blood cells were extracted from all 4 subjects on the 12 sampling points (Pre45, Pre15, R2, R30, R60, R75, R90, R105, R120, R150, R175 and Post30 mission day during the experiment).
Project description:The Jeryak is the hybrid offspring of yaks and Jersey cattle and exhibit improved milk and meat yields. Biomolecules carried within milk exosomes are important for cell growth, development, immune regulation, and various pathophysiological processes. Previous studies showed that miRNAs regulate mammary gland development, lactation, and milk quality. This study explored the relationship between milk exosomes miRNAs and lactation performance. A comparison of the milk content showed that yak milk was of a better quality compared to Jeryak milk (casein, fat, TS, SNF, lactose). Milk collected in December was superior to that collected in June for both yak and Jeryak, except for lactose concentrations. Exosomes were extracted by density gradient centrifugation and miRNA expression profiles in milk exosomes from three yaks and three Jeryaks collected in June and December were detected by small RNA sequencing. In all, 22, 120, 78, and 62 differentially expressed miRNAs (DEMs) were identified in Jun_ JY vs. Jun_ Y (P1: Jeryak in June vs. Yak in June), Jun_ JY vs. Dec_ JY (P2: Jeryak in June vs. Jeryak in December), Dec_ JY vs. Dec_ Y (P3: Jeryak in December vs. Yak in December), and Jun_ Y vs. Dec_ Y (P4: Yak in June vs. Yak in December) groups. These DEMs were enriched in functions and signaling pathways related to lactation performance. In conclusion, these findings are a reference tool to study the molecular basis of lactation performance.
Project description:Chromosomal microarray analysis (CMA) in prenatal diagnosis detects copy number variations (CNVs) in many fetuses; however, the low penetrance and phenotypic diversity of CNVs complicate genetic counseling, resulting in limited understanding of intrauterine ultrasound phenotypes linked to CNVs. In a retrospective analysis of 25,000 cases at Fujian Maternal and Child Health Hospital, 18,000 pregnant women underwent SNP array testing (December 2015 to June 2023).
2024-08-14 | GSE274505 | GEO
Project description:Samples presented at EMP conference June 2011 Shenzhen