Project description:Protein degradation impairment is strongly suspected to play a role in idiopathic Parkinson’s disease (PD). However, current tools and models are lacking to study such disease associated phenotypes across the PD patient population. Here, we generate functional induced dopaminergic neurons (iDANs) directly reprogrammed from adult dermal fibroblasts of patients with PD to investigate intra-neuronal autophagy alterations.
Project description:Analysis of ex vivo isolated lymphatic endothelial cells from the dermis of patients to define type 2 diabetes-induced changes. Results preveal aberrant dermal lymphangiogenesis and provide insight into its role in the pathogenesis of persistent skin inflammation in type 2 diabetes. The ex vivo dLEC transcriptome reveals a dramatic influence of the T2D environment on multiple molecular and cellular processes, mirroring the phenotypic changes seen in T2D affected skin. The positively and negatively correlated dLEC transcripts directly cohere to prolonged inflammatory periods and reduced infectious resistance of patients´ skin. Further, lymphatic vessels might be involved in tissue remodeling processes during T2D induced skin alterations associated with impaired wound healing and altered dermal architecture. Hence, dermal lymphatic vessels might be directly associated with T2D disease promotion. Global gene expression profile of normal dermal lymphatic endothelial cells (ndLECs) compared to dermal lymphatic endothelial cells derived from type 2 diabetic patients (dLECs).Quadruplicate biological samples were analyzed from human lymphatic endothelial cells (4 x diabetic; 4 x non-diabetic). subsets: 1 disease state set (dLECs), 1 control set (ndLECs)
Project description:Analysis of ex vivo isolated lymphatic endothelial cells from the dermis of patients to define type 2 diabetes-induced changes. Results preveal aberrant dermal lymphangiogenesis and provide insight into its role in the pathogenesis of persistent skin inflammation in type 2 diabetes. The ex vivo dLEC transcriptome reveals a dramatic influence of the T2D environment on multiple molecular and cellular processes, mirroring the phenotypic changes seen in T2D affected skin. The positively and negatively correlated dLEC transcripts directly cohere to prolonged inflammatory periods and reduced infectious resistance of patients´ skin. Further, lymphatic vessels might be involved in tissue remodeling processes during T2D induced skin alterations associated with impaired wound healing and altered dermal architecture. Hence, dermal lymphatic vessels might be directly associated with T2D disease promotion.
Project description:We describe a so far uncharacterized, embryonic and self-renewing Neural Plate Border Stem Cell (NBSC) population with the capacity to differentiate into central nervous and neural crest lineages. NBSCs can be obtained by neural transcription factor-mediated reprogramming (BRN2, SOX2, KLF4, and ZIC3) of human adult dermal fibroblasts and peripheral blood cells (induced Neural Plate Border Stem Cells, iNBSCs) or by directed differentiation from human induced pluripotent stem cells (NBSCs). Moreover, human (i)NBSCs share molecular and functional features with an endogenous NBSC population isolated from neural folds of E8.5 mouse embryos. Upon differentiation, iNBSCs give rise to either (1) radial glia-type stem cells, dopaminergic and serotonergic neurons, motoneurons, astrocytes, and oligodendrocytes or (2) cells from the neural crest lineage. Here we provide array-based methylation data of iNBSCs reprogrammed from adult dermal fibroblasts (ADF), iPSC-derived NBSCs and adult dermal fibroblasts. The data provided demonstrate robust changes in the methylation landscape after reprogramming of human adult dermal fibroblasts into iNBSCs.
Project description:We have obtained fibroblast cultures from old adult human non-demented control donors and Alzheimer patients (AD). The fibroblasts were reprogrammed into directly induced neurons (iNs) to serve as an adult-like and age-equivalent model for aging and neurodegeneration. Metabolomic landscape and glucose flux in control versus AD were assessed.
Project description:We have obtained fibroblast cultures from old adult human non-demented control donors and Alzheimer patients (AD). The fibroblasts were reprogrammed into directly induced neurons (iNs) to serve as an adult-like and age-equivalent model for aging and neurodegeneration. Their response to PKM2 modulation (shikonin 10 µM or PKM2 overexpression) and hypoxia (CoDo treatment) were assessed.
Project description:We have obtained fibroblast cultures from old adult human control donors and Alzheimer patients. The fibroblasts were reprogrammed into directly induced neurons (iNs) to serve as an adult-like and age-equivalent model for aging and neurodegeneration. iNs were treated for 10 days with 10 µM shikonin or DMSO.
Project description:We have obtained fibroblast cultures from old adult human donors, including Alzheimer patients. The fibroblasts were reprogrammed into directly induced neurons (iNs) to serve as an adult-like and age-equivalent model for aging and neurodegeneration. We also generated iPSCs and rejuvenated iPSC-derived induced neurons from a subset of the same cohort as controls. The cells were analyzed using several assays, including mRNA-Seq, ATAC-Seq and DNA methylation EPIC array analysis.
