Project description:Aim: To improve risk stratification in patients with stable coronary artery disease (CAD), we aimed to identify genes in monocytes predictive of new ischemic events in patients with CAD and determine to what extent expression of these transcripts resembles expression in acute myocardial infarction (AMI). Results: COX10 and ZNF484 distinguished between AMI and the whole group of stable CAD patients with an accuracy of 90%. COX10 and ZNF484 together with MT-COI and WNK1 distinguished AMI patients from stable CAD patients with and without a new event with a sensitivity of 89% and a specificity of 98%. MT-COI and COX10 increased the accuracy for separating stable CAD patients with and without a new coronary event from 68 to 80% in addition to age, gender, BMI, diabetes, lipids, blood pressure and hs-CRP. Interestingly, expression of MT-COI, COX10 and WNK1 (but not ZNF484) in PBMCs paired with that in monocytes; COX10 in whole blood was similar to that in monocytes. Conclusions: This work showed that COX10 and ZNF484, eventually combined with MT-COI and WNK1 have the potential to accurately discriminate between AMI and stable CAD patients, and may improve the risk assessment of stable CAD patients.
Project description:Analysis of leaves of wild-type and rice COI mutants treated with methyl jasmonate (MeJA). Results provide the role of rice COI on response to jasmonic acid.
Project description:To establish an ultra-high-throughput single cell chromatin accessibility profiling method that is cost-effective and widely accessible, we built on sci-ATAC-seq (Cusanovich, D. A. et al. Science. 2015; Amini, S. et al. Nature Genetics. 2014) and SPLIT-seq (Rosenberg, A. B. et al. Science. 2018) to design SPATAC-seq, which in situ label chromatin fragment in the same single cell through combinatorial barcoding. Briefly, in SPATAC-seq, (1) fixed nuclei are transposed in 48 different wells by 48 unique Tn5 transposase, which containing barcoded adaptors and 5'-phosphorylation; (2) the nuclei from all wells are collected and redistributed into second and third 48-well plate in turn, where the next two rounds of indexing are achieved through into either end of the custom transposome, which result in the generation of more than 110,000 (48^3) unique barcode combinations. (3) the nuclei are pooled, split into sublibraries and lysed, and the DNA was amplified by polymerase chain reaction (PCR), which introduce illumina sequencing barcodes and complete libraries construction. (4) After sequencing, fastq files were demultiplexed according to the same four-barcode combinations. For profiling more cells in one sublibrary, we can increase the number of barcode combinations by increase the number of indexing of each round to 96, which can produce about 1 million combinations. To assess the fidelity of SPATAC-seq, we performed a species-mixing experiment with cultured human (K562) and mouse (Hepa) cells. Here, we tagged mixed permeabilized nuclei with only 8 barcoded transposome. In round 4, we generated eight sublibraries with different cell-recovery targets, which can be used to evaluating the stability of this method and the correlation between real doublet rates and theoretical value.
Project description:We report a high-resolution Illumina RNA-seq method that can analyze non-coded base substitutions in mRNA at 10(-4)-10(-5) per base frequencies in vitro and in vivo. The RNA samples were generated by transcription of pPR9 plasmid that contains a 5.7 kb fragment of E. coli rpoBC operon transcribed from a strong lambda phage PR promoter and terminated at an fd phage transcription terminator. The reference transcription reaction was performed in a buffer with 5 mM MgCl2 to determine the standard error rate (barcode 1). To reduce fidelity, we replaced Mg2+ with Mn2+ (barcode 2). To increase fidelity, we added GreA/GreB proteins for proofreading activity (barode 3 and 4). The same transcrit was purified from E. coli cells (barcode 5).