Project description:Whole proteome profiling and quantification was performed on an isogenic Huntington disease (IsoHD) human embryonic stem cell (hESC) allelic panel. The IsoHD hESCs harbour 30, 45, 65 and 81 CAG repeats in the first exon of HTT. Whole proteome quantification was also performed on neural progenitor cells derived from the IsoHD hESC panel.
Project description:Despite the progress in safety and efficacy of cell therapy with pluripotent stem cells (PSCs), the presence of residual undifferentiated stem cells or proliferating neural progenitor cells (NPCs) with rostral identity has remained a major challenge. Here we reported the generation of an LMX1A knock-in GFP reporter human embryonic stem cell (hESC) line that marks the early dopaminergic progenitors during neural differentiation. Purified GFP positive cells in vitro exhibited expression of mRNA and proteins that characterized and matched the midbrain dopaminergic identity. Further proteomic analysis of enriched LMX1A+ cells identified several membrane associated proteins including CNTN2, enabling prospective isolation of LMX1A+ progenitor cells. Transplantation of hPSC-derived purified CNTN2+ progenitors enhanced dopamine release from transplanted cells in the host brain and alleviated Parkinson’s disease symptoms in animal models. Our study establishes an efficient approach for purification of large numbers of hPSC-derived dopaminergic progenitors for therapeutic applications.
Project description:Genome-wide chromatin state maps of murine embryonic stem (ES) cells, ES-derived neural progenitor cells and whole brain tissue. The data were generated to examine the correlation between histone and DNA methylation during lineage-commitment. Keywords: High-throughput ChIP-sequencing, Illumina, cell type comparison H3K4me3, H3K4me2 and/or H3K4me1 ChIP-Seq in singlicate from mouse embryonic stem (ES) cells, ES-derived neural progenitor cells and whole brain tissue suspensions Raw sequence data files for this study are available for download from the SRA FTP site at ftp://ftp.ncbi.nlm.nih.gov/sra/Studies/SRP000/SRP000230
Project description:We have showed that cancer cells (or tumorigenic cells) resemble neural stem/progenitor cells in regulatory network, tumorigenicity and differentiation potential. We have shown PRMT1 is a protein that is upreguated in and promotes vaious cancers. The expression of its gene is localized to embryonic neural cells during vertebrate embryogenesis. The project is to identify the interaction partners of PRMT1, by which PRMT1 regulates neural stemness in both cancer cells and neural stem cells.