Project description:Expression of circular RNA (circRNA) was profiled during neuronal differentiation of human neuroepithelial stem (NES) cells. From the same data, analysis of linear RNA expression was also performed.
Project description:Arraystar Human circRNA Microarray is designed for the global profiling of human circRNAs. In this study, we applied a circRNA microarray to screen the potential biomarker for HCC. 20 samples extracted from plasma samples including HCC group before operation, and after operation, CH group and control group. Each group contained five samples.
Project description:Here, we have mapped high-confidence circRNA inventories of mouse embryonic stem cells, neuronal progenitor cells and in differentiated glutamatergic neurons and identify hundreds of differentially expressed circRNAs. By screening a panel of candidate circRNAs for a potential function in neuronal differentiation, we found that knockdown of circZNF827 significantly induces expression of key neuronal markers while slowing cell proliferation, suggesting that this molecule normally negatively regulates neuronal differentiation.
Project description:Human neurodevelopment requires differentiating neurons to establish large networks of connections in a highly stereotyped manner. Neuronal differentiation in particular, requires RNA-binding proteins to spatiotemporally regulate thousands of different mRNAs. Yet, how these proteins precisely relate to neuronal development and coordinate the expression of functionally coherent genes in a cell type specific manner is only partially understood. To address this, we sought to understand how the paradigmatic RNA-binding protein IMP1/IGF2BP1, an essential developmental factor, selects and regulates its RNA targets transcriptome-wide during the differentiation of human neurons. We used a combination of systemic and molecular analyses to show that IMP1 directly binds to and regulates the expression of a large set of mRNAs that govern microtubule assembly, an essential process and a key driver of neuronal differentiation. We also show that m6A methylation during the transition from neural precursors to neurons drives both the selection of IMP1 mRNA targets and their translation potential. Our findings establish m6A methylation as a key mechanism coordinating the regulatory action of IMP1 on human neuronal architecture.