Project description:We sequenced 14 mouse tissues' small RNA samples from C57BL/6J mouse and aligned the sequenced reads to miRBase_v16 to profile miRNA expression levels in these 14 tissues.
2016-04-06 | GSE67885 | GEO
Project description:Single-nucleus RNA-sequencing of hippocampal tissues in patients with hippocampal sclerosis
Project description:Interventions: lesion tissues vs. adjacent tissues of colorectal cancer patients:nil
Primary outcome(s): RNA
Study Design: Factorial
Project description:Mesial temporal lobe epilepsy (mTLE) is a chronic neurological disease characterized by recurrent seizures. The pathogenic mechanisms underlying TLE involve defects in post-transcriptional regulation of gene expression. Previously we have shown the differences in cell compartment specific differential expression of coding transcripts in mTLE hippocampal and cortical samples compared to post-mortem controls (Vangoor et al., MedRxiv. 2021). On the same set of patient samples containing subcellular RNA from resected hippocampal (HC) and neo-cortical (Cx) tissue from mTLE no hippocampal sclerosis (non-HS) and mTLE HS International League Against Epilepsy (ILAE) Type 1 or mTLE+HS patients and postmortem control tissue, we applied small RNA sequencing (smRNA-seq). SmRNA-seq was analyzed for investigating the expression profiles of small non-coding RNA species as microRNAs and transferRNA fragments in human mTLE and control hippocampal tissue.
Project description:With the criterion of 2-fold cutoff, 7 miRNAs were upregulated and 7 miRNAs were downregulated in APP/PS1 hippocampal tissues compared with WT hippocampal tissues
Project description:Key to the human brain’s unique capacities are a myriad of neural cell types, specialized molecular expression signatures, and complex patterns of neuronal connectivity. Neurons in the human brain communicate via well over a quadrillion synapses. Their specific contribution might be key to the dynamic activity patterns that underlie primate-specific cognitive function. Recently, functional differences were described in transmission capabilities of human and rat synapses. To test whether unique expression signatures of synaptic proteins are at the basis of this, we performed a quantitative analysis of the hippocampal synaptic proteome of four mammalian species, two primates, human and marmoset, and two rodents, rat and mouse. Abundance differences down to 1.15-fold at an FDR-corrected p-value of 0.005 were reliably detected using SWATH mass spectrometry. The high measurement accuracy of SWATH allowed the detection of a large group of differentially expressed proteins between individual species and rodent versus primate. Differentially expressed proteins between rodent and primate were found highly enriched for plasticity-related proteins.
Project description:To identifiy osmotic stress responsive smRNAs, we used a deep-sequencing technique to profile small RNA populations in leaf and root tissues of plants under high osmotic stress and control conditions.
Project description:Alcohol preferring vervet dams were permitted to ingest alcohol 4 days/week during the second half of gestation (e90-e165) and paired with sucrose matched controls. Cases and controls were sacrificed with subsequent hippocampal extraction at 5 months and 2 years. RNA was extracted according to the manufacturer's protocol and hybridized to the Affymetrix Rhesus Genechip microarray. We sought to identify whether global downregulation in mRNA dataset was related to miRNA expression in a non-human primate model of FASD in order to develop an understanding of how this disorder may develop in humans.