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== '''Welcome to the Computational Genomics Lab''' ==  
== '''Computational Epigenomics and Transcriptomics Lab (PI: Wei Li)''' ==  


[http://www.bcm.edu/cancercenter/ Dan L. Duncan Cancer Center], [http://www.bcm.edu/mcb/index.html Department of Molecular and Cellular Biology], [http://www.bcm.edu/ Baylor College of Medicine]
[http://www.bcm.edu/cancercenter/ Dan L. Duncan Cancer Center], [http://www.bcm.edu/mcb/index.html Department of Molecular and Cellular Biology], [http://www.bcm.edu/ Baylor College of Medicine]
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==Recent News==
==Recent News==
. '''09/2010, New Paper'''
. 04/2014:  Liguo's ChIP-exo methodology paper (MACE) is accepted in principle in '''Nucleic Acids Research'''.
 
A paper titled "A High Resolution Map of the Drosophila Transcriptome by Paired-End RNA-Sequencing" has been accepted by Genome Research.
 
. '''08/2010, New Grant'''


Our Pilot Project has been funded by BCM Stem Cells and Regenerative Medicine Center (STaR).  
. 02/2014:  DQ and HJ's HSC LncRNA paper is in revision in '''Cell Stem Cell'''.  


. '''07/2010, New Paper'''
. 02/2014:  Zheng's collaborative work on alternative splicing in heart development is accepted to '''Nature Communications'''.


The Epigenome Consortium paper titled "Sequencing-Based Sequence-based profiling of DNA methylation: comparisons of methods and catalogue of allelic epigenetic modifications" has been accepted by '''Nature Biotechnology'''.
. 02/2014:  Zheng's brain tumor 3'UTR regulator paper is accepted to '''Nature'''. This paper was initially rejected after review twice. We appealed twice with success and finally made it in the 3rd submission.


. '''06/2010, New Postdoc'''
. 02/2014:  Welcome our new postdoc Jianzhong Su and graduate student Xueqiu Lin.


Hao Zhao will join us as a postdoc fellow. Hao has a PhD in Computer Science from City University of Hong Kong. Welcome!
. 02/2014:  Deqiang's mouse HSC Aging Epigenomics paper is accepted in principle to '''Cell Stem Cell'''.


. '''05/2010, New Paper'''
. 01/2014:  Deqiang's Methodology paper for the detection of differential DNA Methylation (MOABS) is accepted to '''Genome Biology'''.


Our paper titled "Histone modifications and chromatin organization in prostate cancer" has been accepted by Epigenomics.
. 01/2014:  Our collaborative work on Breast Cancer Epigenetics is accepted to '''Science Translational Medicine'''.


. '''01/2010, New Grant'''
. 01/2014:  Yuanxin and Zheng's ZM11 paper with Xiaobing Shi lab in MD Anderson is accepted to '''Nature'''. This work links transcription elongation to tumor suppression.


A Texas CPRIT grant has been funded. We will use ChIP-seq and RNA-seq to analyze Androgen Receptor (AR) function in Prostate Cancer with Dr. Weigel at BCM.
. 12/2013: Kaifu's aging nucleosome paper is accepted to ''' Genes & Development'''


. '''01/2010, New Grant'''
. 12/2013: We received a 5-year NIH/NHGRI '''R01''' grant (scored at 6 percentile in its first submission) to study DNA Methylation


A planning award for the Lonestar Oncology Network for EpigeneticS Therapy And Research (LONESTAR) was funded. This project will bring together a "dream team" in epigenetics research from UT Southwestern, Baylor College of Medicine, and M.D. Anderson.  We will direct the bioinformatics component for LONESTAR.
. 11/2013: Wei will serve on the Editorial Board of '''Molecular Endocrinology'''


. '''01/2010, [http://www.aacr.org/home/scientists/meetings--workshops/special-conferences/cancer-epigenetics.aspx Conference on Cancer Epigenetics]'''
. 09/2013:  Deqiang's DNA methylation Canyon paper is accepted to '''Nature Genetics'''.


Wei Li is an invited speaker in the American Association for Cancer Research (AACR) Special Conference on Cancer Epigenetics at Puerto Rico.
. 09/2013:  Xueqiu's bisulfite sequencing quality control paper (BSeQC) is accepted to '''Bioinformatics'''.


. '''12/24/2009, New Paper'''
. 08/2013:  Kadir's p53 paper is accepted to '''Nucleic Acids Research'''


Dr.Bert O'Malley's paper, Global Characterization of Transcriptional Impact of the SRC-3 Coregulator, has been accepted by '''Molecular Endocrinology'''. Liguo and Wei are co-authors on the paper.
. 06/2013:  Zheng's TCGA RNA-seq bioinformatics paper is under review in '''Nature Biotechnology'''.


. '''12/08/2009, New Paper'''
. 01/2013:  [http://www.bcm.edu/news/item.cfm?newsID=6723 BCM News] and  [http://epigenie.com/danpos-reveals-dynamic-nucleosomes Epigenie Headline] about our recent work on nucleosome dynamics.


Liguo's paper titled 'A Statistical Method for the Detection of Alternative Splicing Using RNA-seq' has been accepted by '''PLoS ONE'''. Congratulations Liguo!
. 12/2012:  Liguo and HJ's CPAT RNA coding potential prediction paper is accepted to '''Nucleic Acids Research'''.


. '''11/13/2009, New Grant'''
. 11/2012:  Kaifu's nucleosome methodology paper DANPOS is accepted to '''Genome Research'''.


Wei Li received a '''New Investigator Award''' from the Department of Defense (DOD) Prostate Cancer Research Program (PCRP). Cheers!
. 10/2012:  Kaifu's promoter nucleosome paper is accepted to '''Genome Research'''.


. '''11/07/2009, Keynote Presentation'''
. 09/2012:  A '''NIH R01 grant''' was funded. We will work with Dr. Issa at Temple Univ. to understand DNA methylation in Cancer.


Wei Li gave a Keynote Presentation at the Symposium on Advances in Cell Signaling, Cancer Prevention and Therapy at South Padre Island, Texas.
. 08/2012: A mouse ES nucleosome paper from Kaestner lab at Upenn is accepted to '''Cell'''. Kaifu and Wei used DANPOS to analyze the data and were listed as co-authors.


. '''09/29/2009, New Grant'''
. 08/2012: Dr. Benjamin Rodriguez will join us as a '''Postdoc Associate'''. Ben has PhD in Integrated Biomedical Science from the Ohio State Univ. Welcome!


A prestigious NIH Challenge grant was funded. We will use ChIP-seq to analyze RXRa binding in mouse liver with Dr. Karpen at Texas Children's Hospital.
. 08/2012:  A '''Mazzone Award ''' is funded. We will work with Dr. Balk at Harvard Medical School to understand the molecular features of aggressive prostate cancer.
. 06/2012: Liguo's RNA-seq Quality Control paper is accepted to '''Bioinformatics'''.


. '''09/17/2009, New Grant'''
. 06/2012:  A '''NIH R01 grant''' is funded. We will work with Dr. Goodell at BCM to understand DNA methylation in Hematopoietic Stem Cell.


A two-year $2.5 million NIH Grand Opportunity (GO) grant was funded. We will study aging epigenomics with Drs. Darlington and Goodell at BCM.
. 04/2012:  A '''NIH R01 grant''' is funded. We will work with Dr. Dent at MD Anderson to define USP22 functions during mammalian development.


. '''09/15/2009, New Grant'''
. 04/2012:  Dr.Dean Tang's prostate cancer stem cell paper is accepted in '''Cell Stem Cell'''. Wei is a co-author.


A prestigious NIH Challenge grant was funded. We will use RNA-seq to characterize patient cardiac progenitors with Dr. Pu at Harvard Medical School.
. 02/2012:  Yuanxin's epigenetic paper with Katrin Chua lab at Stanford is accepted to '''Nature'''. Two years of hard work finally paid off!


. '''06/05/2009, New BMC Bioinformatics Paper'''
. 02/2012: Liguo Wang is offered a '''tenure-track Assistant Professor''' position at Mayo Clinic. Congratulations!
 
Yuanxin's paper titled 'BSMAP: whole genome Bisulfite Sequence MAPping program' has been accepted by '''BMC Bioinformatics'''. Congratulations Yuanxin!
 
. '''03/26/2009, New Cell Paper'''
 
A paper titled 'Reprogrammed Androgen Receptor Function in Androgen-Independent Prostate Cancer' has finally been accepted by '''Cell'''.


. 02/2012:  Justin Park will join us as a Postdoc Associate. Justin will graduate in May with a PhD in Computer Science from Rice University. Welcome!


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[http://openwetware.org/wiki/Li_Lab:news News Archive]
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== '''A Genomic View of Epigenetic and Transcriptional Regulation''' ==
Our lab is focused on the design and application of bioinformatics algorithms to elucidate global epigenetic mechanisms and transcription dynamics in normal development and diseases such as cancer. Since establishing the lab in early 2008, we have published more than 50 peer-reviewed papers in high profile journals, such as Nature, Cell, Nature Genetics, Molecular Cell, Genome Research, Genome Biology, Genes and Development, Nucleic Acids Research, Cancer Research, PNAS and Bioinformatics.
 
We developed a number of widely used algorithms to analyze next generation sequencing data from Chromatin Factor ChIP-seq (MACS, MACE, DyChIPS), DNA Methylation Bisulfite-seq (BSMAP/RRBSMAP, BSeQC, MOABS), Nucleosome Positioning MNase-seq (DANPOS), and RNA-seq (CPAT, RSeQC, DaPars). These algorithms have been broadly adopted by thousands of academic users. For example, the MACS algorithm has gathered >1000 citations since 2008.


In collaboration with experimental biologists, we used these algorithms to gain novel biological insights from various biological processes and disease models.


Our lab is focused on the design and application of statistical and computational algorithms to elucidate global epigenetic and transcriptional regulatory mechanism, by interpreting and integrating data from ChIP-chip/seq, DNA methylation, Nucleosome positioning, Alternative splicing and Motif finding.
* Chromatin Factors: ER in breast cancer, AR in prostate cancer, FoxA1 pioneer factor, Atoh1 in neuron development, NSD2 in oncogenic programming, SIRT7 in cancer transformation, ZM11 in transcription elongation, and p53 in ES differentiation.


An elaborate system of epigenetic and transcription regulation is responsible for the morphological and behavioral complexity in higher eukaryotes. This regulatory system consists of diverse trans-acting protein factors, cis-acting regulatory DNA sequences and the underlying epigenomic background, such as histone modifications, DNA methylation and Nucleosome localizations. Recently, Chromatin ImmunoPrecipitation coupled with whole genome tiled microarray (ChIP-chip) and/or next-generation sequencing (Solexa, SOLiD and 454) has evolved as a powerful and unbiased technique to study this genome-wide regulatory system. The application of this technology to multiple factors and/or in multiple conditions allows biologists to study how transcription is differentially regulated in a combinatorial manner. However, it also poses great challenges for the development of effective algorithms, the key link between massive raw data and biological hypotheses.
* DNA Methylation: Dnmt3a in HSC differentiation, DNA methylation Canyon, HSC aging.  


We developed a series of algorithms to reliably detect and annotate ChIP-enriched regions using Next-generation sequencing (MACS; Genome Biology 2008) and Affymetrix whole-genome tiling arrays, including 1) Model-based Analysis of Tiling-arrays (MAT; PNAS 2006) and a hidden Markov model (Bioinformatics 2005) for ChIP-region detection, 2) extreme MApping of OligoNucleotide (xMAN; BMC Genomics 2008) for microarray probe mapping, 3) Cis-regulatory Element Annotation System (CEAS; NAR 2006) for ChIP-region annotation. Since the inception in early 2006, they have been adopted by hundreds of academic users and are now considered as the ChIP-chip data analysis standard in many labs.  We worked with ENCODE consortium to systematically analyze the performance variability introduced in ChIP-chip protocols, array platforms, and analysis methods (Genome Res. 2008). Furthermore, we are also in close collaboration with several labs on identifying global regulation targets of several key transcription factors, including Estrogen Receptor (Cell 2005; Nature Genetics 2006); Androgen Receptor (Molecular Cell 2007; Cell 2009) and FoxA1 (Cell 2008).
* Nucleosome Organization: fragile nucleosome in gene poising, promoter nucleosome with Tup1, nucleosome dynamics in ES differentiation, global nucleosome loss in aging.


We are currently collaborating with many BCM laboratories to use the Next generation sequencing to study 1) Transcription factor binding and histone modifications (ChIP-seq); 2) DNA methylation at single nucleotide resolution (Bisulfite-seq); 3) Nucleosome remodeling (Mnase-seq); 4) Alternative splicing (RNA-seq).  My laboratory also plays an important role in the BCM Epigenomics Data Analysis and Coordination Center for a five-year [http://nihroadmap.nih.gov/epigenomics/referenceepigenomeconsortium.asp NIH Roadmap Epigenomics Program].  
* Transcriptome: chimeric RNA in prostate cancer,  Long non-coding RNA in HSC, 3’UTR deletion in cancer and their master regulators.


[http://sites.google.com/a/bcm.edu/lilab/ Lab Intranet]
[http://sites.google.com/a/bcm.edu/lilab/ Lab Intranet]
[http://openwetware.org/wiki/Li_Lab openwetware]
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Revision as of 14:05, 5 April 2014

Home        People        Publications        Collaborations        Software        Positions        Contact       


Recent News

. 04/2014: Liguo's ChIP-exo methodology paper (MACE) is accepted in principle in Nucleic Acids Research.

. 02/2014: DQ and HJ's HSC LncRNA paper is in revision in Cell Stem Cell.

. 02/2014: Zheng's collaborative work on alternative splicing in heart development is accepted to Nature Communications.

. 02/2014: Zheng's brain tumor 3'UTR regulator paper is accepted to Nature. This paper was initially rejected after review twice. We appealed twice with success and finally made it in the 3rd submission.

. 02/2014: Welcome our new postdoc Jianzhong Su and graduate student Xueqiu Lin.

. 02/2014: Deqiang's mouse HSC Aging Epigenomics paper is accepted in principle to Cell Stem Cell.

. 01/2014: Deqiang's Methodology paper for the detection of differential DNA Methylation (MOABS) is accepted to Genome Biology.

. 01/2014: Our collaborative work on Breast Cancer Epigenetics is accepted to Science Translational Medicine.

. 01/2014: Yuanxin and Zheng's ZM11 paper with Xiaobing Shi lab in MD Anderson is accepted to Nature. This work links transcription elongation to tumor suppression.

. 12/2013: Kaifu's aging nucleosome paper is accepted to Genes & Development

. 12/2013: We received a 5-year NIH/NHGRI R01 grant (scored at 6 percentile in its first submission) to study DNA Methylation

. 11/2013: Wei will serve on the Editorial Board of Molecular Endocrinology

. 09/2013: Deqiang's DNA methylation Canyon paper is accepted to Nature Genetics.

. 09/2013: Xueqiu's bisulfite sequencing quality control paper (BSeQC) is accepted to Bioinformatics.

. 08/2013: Kadir's p53 paper is accepted to Nucleic Acids Research

. 06/2013: Zheng's TCGA RNA-seq bioinformatics paper is under review in Nature Biotechnology.

. 01/2013: BCM News and Epigenie Headline about our recent work on nucleosome dynamics.

. 12/2012: Liguo and HJ's CPAT RNA coding potential prediction paper is accepted to Nucleic Acids Research.

. 11/2012: Kaifu's nucleosome methodology paper DANPOS is accepted to Genome Research.

. 10/2012: Kaifu's promoter nucleosome paper is accepted to Genome Research.

. 09/2012: A NIH R01 grant was funded. We will work with Dr. Issa at Temple Univ. to understand DNA methylation in Cancer.

. 08/2012: A mouse ES nucleosome paper from Kaestner lab at Upenn is accepted to Cell. Kaifu and Wei used DANPOS to analyze the data and were listed as co-authors.

. 08/2012: Dr. Benjamin Rodriguez will join us as a Postdoc Associate. Ben has PhD in Integrated Biomedical Science from the Ohio State Univ. Welcome!

. 08/2012: A Mazzone Award is funded. We will work with Dr. Balk at Harvard Medical School to understand the molecular features of aggressive prostate cancer.

. 06/2012: Liguo's RNA-seq Quality Control paper is accepted to Bioinformatics.

. 06/2012: A NIH R01 grant is funded. We will work with Dr. Goodell at BCM to understand DNA methylation in Hematopoietic Stem Cell.

. 04/2012: A NIH R01 grant is funded. We will work with Dr. Dent at MD Anderson to define USP22 functions during mammalian development.

. 04/2012: Dr.Dean Tang's prostate cancer stem cell paper is accepted in Cell Stem Cell. Wei is a co-author.

. 02/2012: Yuanxin's epigenetic paper with Katrin Chua lab at Stanford is accepted to Nature. Two years of hard work finally paid off!

. 02/2012: Liguo Wang is offered a tenure-track Assistant Professor position at Mayo Clinic. Congratulations!

. 02/2012: Justin Park will join us as a Postdoc Associate. Justin will graduate in May with a PhD in Computer Science from Rice University. Welcome!

News Archive




Our lab is focused on the design and application of bioinformatics algorithms to elucidate global epigenetic mechanisms and transcription dynamics in normal development and diseases such as cancer. Since establishing the lab in early 2008, we have published more than 50 peer-reviewed papers in high profile journals, such as Nature, Cell, Nature Genetics, Molecular Cell, Genome Research, Genome Biology, Genes and Development, Nucleic Acids Research, Cancer Research, PNAS and Bioinformatics.

We developed a number of widely used algorithms to analyze next generation sequencing data from Chromatin Factor ChIP-seq (MACS, MACE, DyChIPS), DNA Methylation Bisulfite-seq (BSMAP/RRBSMAP, BSeQC, MOABS), Nucleosome Positioning MNase-seq (DANPOS), and RNA-seq (CPAT, RSeQC, DaPars). These algorithms have been broadly adopted by thousands of academic users. For example, the MACS algorithm has gathered >1000 citations since 2008.

In collaboration with experimental biologists, we used these algorithms to gain novel biological insights from various biological processes and disease models.

  • Chromatin Factors: ER in breast cancer, AR in prostate cancer, FoxA1 pioneer factor, Atoh1 in neuron development, NSD2 in oncogenic programming, SIRT7 in cancer transformation, ZM11 in transcription elongation, and p53 in ES differentiation.
  • DNA Methylation: Dnmt3a in HSC differentiation, DNA methylation Canyon, HSC aging.
  • Nucleosome Organization: fragile nucleosome in gene poising, promoter nucleosome with Tup1, nucleosome dynamics in ES differentiation, global nucleosome loss in aging.
  • Transcriptome: chimeric RNA in prostate cancer, Long non-coding RNA in HSC, 3’UTR deletion in cancer and their master regulators.


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