Project description:The hippocampus is a primary region affected in Alzheimer’s disease (AD). Because AD postmortem brain tissue is not available prior to symptomatic stage, we lack understanding of early cellular pathogenic mechanisms. To address this issue, we examined the cellular origin and progression of AD pathogenesis in patient-based model systems including iPSC-derived brain cells transplanted into the mouse brain hippocampus, as well as human post-mortem hippocampal tissues. Our data showcase patient-based models to study the cellular origin, progression, and prion-like spread of AD pathogenesis.
Project description:RNA-Seq was performed in post-mortem SCA1 cerebellum at the end stage of the disease and an age/sex-matched control tissue from a healthy individual.
Project description:Fresh frozen samples from human white matter MS lesions. Using Stereo-seq we compared mixed active/inactive lesions with lipid-laden foamy microglia with lesions containing ramified microglia. Study includes post-mortem subcortical white matter (WM) tissue of n = 7 donors with MS (5 females, 2 males). Scripts used for analysis are available stored on github under doi: 10.5281/zenodo.19710470
Project description:This experiment analyzes the mirnome of 16 retina samples and 2 Retinal Pigment Epithelium (RPE)/choroid from non-visually impaired post-mortem donors, by using smallRNAseq on a Illumina platform. The aim was to establish the catalogue of normal retina-expressed miRNAs, determine their relative abundance, and identify miRNA variants (isomiRs).
Project description:Our understanding of heart failure (HF) has been provided by indirect surrogates, such as post-mortem histology, cardiovascular imaging, and molecular characterisation in vivo and in vitro, rather than directly in pre-mortem human cardiac tissue. Using our heart bank of pre-mortem hearts procured according to the most stringent protocols, we examined ischemic (ICM) and dilated cardiomyopathy (DCM) -- the most common causes of HF and leading causes of cardiac transplantation1. We performed unbiased, comprehensive, paired proteomic and metabolomic analysis of 51 left ventricular (LV) samples from 44 cryopreserved pre-mortem human ICM and DCM hearts, including age-matched, healthy, histopathologically-normal donor controls of both genders for comparison. Data integration via pathway and correlation network analysis revealed overlapping and divergent disease pathways in ICM and DCM, and, strikingly, precise sex-specific differences within each disease that unveil the interaction of gender with HF. Identified core functional nodes in each disease may serve as novel therapeutic targets, and we provide all proteomic and metabolomic results via an interactive online repository (https://mengboli.shinyapps.io/heartomics/) as a publicly available resource.
Project description:Our understanding of heart failure (HF) has been provided by indirect surrogates, such as post-mortem histology, cardiovascular imaging, and molecular characterisation in vivo and in vitro, rather than directly in pre-mortem human cardiac tissue. Using our heart bank of pre-mortem hearts procured according to the most stringent protocols, we examined ischemic (ICM) and dilated cardiomyopathy (DCM) -- the most common causes of HF and leading causes of cardiac transplantation1. We performed unbiased, comprehensive, paired proteomic and metabolomic analysis of 51 left ventricular (LV) samples from 44 cryopreserved pre-mortem human ICM and DCM hearts, including age-matched, healthy, histopathologically-normal donor controls of both genders for comparison. Data integration via pathway and correlation network analysis revealed overlapping and divergent disease pathways in ICM and DCM, and, strikingly, precise sex-specific differences within each disease that unveil the interaction of gender with HF. Identified core functional nodes in each disease may serve as novel therapeutic targets, and we provide all proteomic and metabolomic results via an interactive online repository (https://mengboli.shinyapps.io/heartomics/) as a publicly available resource.