장혜식 교수
Hye-sik Jang
서울대학교 생명과학부 · 생화학·유전·분자생물학
연구실 소개
장혜식 교수의 연구실은 바이러스 유전체의 전사체와 에피트랜스크립트론 구조를 고해상도로 규명하는 데 주력하고 있으며, 특히 SARS-CoV-2와 허브모자이르스와 같은 복잡한 바이러스 유전체의 전사 조절 메커니즘을 단백질-유전자 상호작용과 함께 분석합니다. 나노포어 직접 RNA 시퀀싱과 DNA 나노볼 시퀀싱을 활용한 전장 전사체 맵핑 기술을 개발하여, 기존에 알려지지 않은 오퍼런드, 프레임시프트, 유전자 융합을 포함한 비정상적 전사 제품의 기원과 기능을 규명하고 있습니다. 또한, 감염된 조직 내에서의 번역 조절과 텐덤 반복 확장 질환의 정밀 진단을 위한 신개념 시퀀싱 워크플로우 개발에도 기여하고 있습니다.
연구 현황
연구 성과 추이
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
주요 논문
15Summary SARS-CoV-2 is a betacoronavirus that is responsible for the COVID-19 pandemic. The genome of SARS-CoV-2 was reported recently, but its transcriptomic architecture is unknown. Utilizing two complementary sequencing techniques, we here present a high-resolution map of the SARS-CoV-2 transcriptome and epitranscriptome. DNA nanoball sequencing shows that the transcriptome is highly complex owing to numerous recombination events, both canonical and noncanonical. In addition to the genomic RNA
Abstract Small, compact genomes confer a selective advantage to viruses, yet human cytomegalovirus (HCMV) expresses the long non-coding RNAs (lncRNAs); RNA1.2, RNA2.7, RNA4.9, and RNA5.0. Little is known about the function of these lncRNAs in the virus life cycle. Here, we dissected the functional and molecular landscape of HCMV lncRNAs. We found that HCMV lncRNAs occupy ~ 30% and 50–60% of total and poly(A)+viral transcriptome, respectively, throughout virus life cycle. RNA1.2, RNA2.7, and RNA4
Tandem repeat expansion disorders can be difficult to diagnose when expansions exceed 200 repeats, as standard methods (for example, Southern blot and modified PCR) often fail. We present a Cas9-targeted nanopore sequencing workflow and an automated analysis pipeline, RepeatLab, for accurate repeat-length estimation, structure assessment, and high-resolution methylation profiling. Validated on 13 myotonic dystrophy type 1 samples, 4 healthy controls, and 4 cell lines, this approach demonstrates
Translational regulation in tissue environments during in vivo viral pathogenesis has rarely been studied due to the lack of translatomes from virus-infected tissues, although a series of translatome studies using in vitro cultured cells with viral infection have been reported. In this study, we exploited tissue-optimized ribosome profiling (Ribo-seq) and severe-COVID-19 model mice to establish the first temporal translation profiles of virus and host genes in the lungs during SARS-CoV-2 pathoge
Please visit the GitHub page to see more updated information. Changes in tailseeker 3.1.7 Fix the docker wrapper script to take up the environment variable TAILSEEKER_REFDBDIR correctly. Remove U3 and 7SL RNAs from contaminant database pipeline. Fix the compatibility issue with recent versions of snakemake. Add support for MiSeq v3 chemistry. Fix a crash issue in tailseq-dedup-perfect when it fails if more than 1024 alignments with less optimal TAIL-seq signals are followed after an alignment wi
Correction to: Experimental & Molecular Medicine https://doi.org/10.1038/s12276-023-01110-0 , published online 01 November 2023
This HDF5 file contains the processed data of primary poly(A) tail length analyses for the TAIL-seq runs used for Chang and Yeo et al. (2018; doi:10.1016/j.molcel.2018.03.004). The read count tables are stored under the two-level group structure of the run identifier as the first level and the sample identifier as the second level. A dataset at a leaf node is an unsigned integer array of the read count numbers by the length of poly(A) in rows and the length of U tails following after poly(A) in
mRNA vaccine efficacy depends on sequence optimization, but designing optimal sequences is challenging due to complex cellular RNA regulatory mechanisms. Here we present VaxLab, an open-source web platform that provides the complete design-to-synthesis workflow for mRNA vaccines in a unified interface. VaxLab incorporates four codon optimization algorithms based on distinct approaches: codon usage matching, secondary structure design and deep generative models. 5' and 3' untranslated regions can
Tailseeker 3.1 is a software suite for profiling RNA poly(A) tails with a high-throughput DNA sequencer. This pre-built resource package contains the genome indices, gene annotations, and gene association databases processed to be used with Tailseeker. The data were built with ENSEMBL JGIxl91 <em>(X. laevis)</em> as of Dec 16, 2016.
This dataset contains meta information for TAIL-seq datasets and original files acquired from microscopic imaging of Xenopus laevis or zebrafish embryos. The total size of all sequencing data files in this dataset is larger than 1 804 gigabytes. Due to the data size restriction in the Mendeley Data, we have uploaded the data files to Zenodo. DOI and URLs for downloadable locations are specified in the tables following the descriptions. Detailed information about this dataset is described in the
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