Project description:The experiments are done with three libraries by introducing base-pair perturbations on Widom 601: (1) poly(dA:dT) tract library (2) mismatch library (3) insertion library. And additional two more libraries based on native yeast genomic sequences: (4) Park97 mismatch library (5) Park97 insertion library. And we measured the nucleosome positioining in the base-pair resolution for before and after sliding by Chd1 chromatin remodeler.
Project description:We performed an original protocol called synthetic STARR-seq (PMID: 30427832) in which a library of putative response elements are tested for their capacity to bind thyroid hormone (T3) nuclear receptors and convey T3 transactivation More than 10 000 putative T3 response elements (T3RE) were cloned in the hSTARR-seq-ORI vector with a minimal promoter, in the 3' end of the transcribed sequence. These are variant of the consensus T3RE (5'NGGTCANNNNRGGNNA3') Therefore the most active T3RE are over-represented in the RNA of cells transfected with the plasmid library and treated with T3.
Project description:Firstly, we extracted bone marrow cells from AML mouse models in four different timepoints (T0, T1, T2 and T3). And we used droplet-based single cell RNA sequencing technology to reveal the early-MDS, late-MDS, MDS-AML and AML four-stage landscape in a mouse AML model initiated by Myc overexpression. Also, we extracted one AML patient bone marrow sample to sequence by constructing library following 10X genomics platform. And integrated this data with four AML patients data from 10X genomics database to explain the molecular mechanism of splicing events of TMEM134 in AML. To verify the alternative splicing results, we used smartseq2 to construct the single cell library in T3. And combined TCGA-LAML and TARGET-AML database and our mouse function data, we identify the alternative splicing events of TMEM134 could drive the proliferation function in acute myelogenous leukemogenesis.
Project description:Purpose: We report expression of a new Cas13 enzyme in retinal cells and evaluate its efficacy in targeting the VEGFA mRNA to establish safety and efficacy of the enzyme for anti-VEGFA therapy. Methods: Mammalian cells (HEK293FT) or mouse retina were treated with shRNA, CasRx or Cas13bt3 carrying VEGFA targeting sgRNA. Total RNA was collected for RNA seqeuencing to study VEGFA mRNA expression and well as off-target genes. Results: Significant knockdown of VEGFA mRNA was observed with no effect on predicted off-target genes in mammalina cells and mouse retina. No loss of mouse VEGFA was also detected. Conclusions: AAV2.7m8 can be used for retina-wide transduction, and Cas13bt3 may be a potential new tool for control of VEGFA.
Project description:ChIP-seq data from mouse liver over-expressing GFP and fed a PTU diet and treated with saline, or overexpressing biotinylated TRb1 and GFP and fed a PTU diet, treated with either saline or T3 Mouse liver was infected with adenovirus that either expressed only GFP or GFP and biotinylated TRb1 and were fed a PTU diet, followed by injections with only saline (GFP-only livers) or with saline or T3 (Biotinylated-TRb1 and GFP livers). ChIP assays were performed using streptavidin agarose to capture biotinylated TRb1 followed by library construction and sequencing.
Project description:Transcriptome analysis showed that most positively- and negatively-regulated T3 target genes were altered by either acute or chronic stimulation, with few regulated both acutely and chronically. In addition, several target genes showed differential temporal expression patterns not only between acute vs. chronic stimulation, but also after T3 withdrawal.