Project description:To better understand the mechanism of U1A functions in human cells, we performed U1A iCLIP-seq analysis in HeLa cells. iCLIP-seq is a previously well-established protocol that is believed to detect protein-RNA interaction at individual-nucleotide resolution. Indeed, successful completion of U1A iCLIP-seq has helped us to illuminate more detailed mechanism through which U1 snRNP prevents mRNA PCPA (premature cleavage and polyadenylation)
Project description:To investigate whether the ALKBH5-mediated metabolic changes via demethylation of its target mRNA(s) is important in regulating viral response, we mapped the targeting transcripts and binding sites of ALKBH5 in the virus infected cells and uninfected cells by using iCLIP-seq. Biological replicates of iCLIP-seq confirmed that OGDH is the direct targeting transcript of ALKBH5 and the binding capacity of ALKBH5 to OGDH mRNA was decreased upon viral infection. By combining the ALKBH5-iCLIP-seq results with m6A-seq data, we identified that there are overlapped ALKBH5-iCLIP peaks and m6A-seq peaks on OGDH mRNA. Furthermore, other mRNAs, such as GOT2 mRNA, were also the ALKBH5’s targeting transcripts and m6A demethylation substrates. GOT2 is an important metabolic enzyme well known to be involved in host response to viral infection. These data demonstrated that ALKBH5-mediated metabolic rewiring via demethylation of target OGDH mRNA and other transcripts is important in regulating cellular viral replication.
Project description:Identification of Meiotic-P26-bound RNAs in cutlured Drosophila SL2 cells by iCLIP (individual-nucleotide resolution UV crosslinking and immunoprecipitation)
Project description:Mapping the targeting transcripts and binding sites of ALKBH5 by individual-nucleotide resolution UV crosslinking and immunoprecipitation-based sequencing (iCLIP-seq)
Project description:Purpose: to identify the AGO1-bound miRNAs and mRNAs in human endothelial cells subject to hypoxic condition (2% oxygen) Methods: human microvascular endothelial cells was cultured under normoxia (20% oxygen) or hypoxia (2%) oxygen for 24 hours. Total RNA was extracted and RNA and small RNA libraries were prepared for Seq. Results: We found substantial changes in AGO1-bound mRNAs due to hypoxia. A portion of CLIP-seq reads also reveal direct binding to miRNA to mRNA. Conclusions: hypoxia induces profound changes in mRNAs associated with AGO1.
Project description:RNAs directly interacting with EZH2 were isolated from human colorectal HCT116 cells using an in vivo crosslinking and immunoprecipitation strategy (iCLIP, König J et al, Nat Struct Mol Biol 2010) coupled to an ultrasequencing approach.
Project description:To investigate the RNA binding landscape of HNRNPH, we performed an individual-nucleotide resolution UV crosslinking and immunoprecipitation (iCLIP) experiment for HNRNPH in MCF7 cells
Project description:To identify the substrates of METTL5, we used crosslinking-assisted immunoprecipitation of overexpressed, FLAG-METTL5 followed by high throughput sequencing.