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== A Genomic View of Epigenetic and Transcriptional Regulation ==
== '''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]


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.
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==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'''.


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


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


We are currently collaborating with many BCM laboratories to use the Next generation sequencing to study 1) Transcription factor binding (ChIP-seq); 2) DNA methylation at single nucleotide resolution (BS-seq); 3) Nucleosome positioning (Nu-seq); 4) Cancer specific alternative splicing junctions (RNA-seq)My laboratory also plays an important role in the BCM Epigenomics Data Analysis and Coordination Center for a five-year $190 million [http://nihroadmap.nih.gov/epigenomics/fundedresearch.asp NIH Roadmap Epigenomics Program].  
. 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.


[http://sites.google.com/e/bcm.edu/lilab/Home Internal]
. 12/2013: Kaifu's aging nucleosome paper is accepted to ''' Genes & Development'''


[[Image:WeiLi.jpg‎]]
. 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'''


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


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


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. 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.
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==Recent News==
. 12/2012:  Liguo and HJ's CPAT RNA coding potential prediction paper is accepted to '''Nucleic Acids Research'''.
. '''06/04/2009, New Postdoc (joint with Prof. Xuewen Pan'''


Kaifu Chen has accepted our postdoc offer. Kaifu has a PhD in Genomics and Bioinformatics from Beijing Institute of Genomics, Chinese Academy of Sciences. Welcome Kaifu!
. 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'''.


. '''04/30/2009, New Postdoc (joint with Prof. Huda Zoghbi)'''
. 09/2012:  A '''NIH R01 grant''' was funded. We will work with Dr. Issa at Temple Univ. to understand DNA methylation in Cancer.


Peng Yu has accepted our postdoc offer. Peng will soon finish his PhD in computer engineering at the University of Texas at Austin, and join our lab this summer. Welcome Peng!
. 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!


. '''03/26/2009, New Cell Paper'''
. 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'''.


A paper titled 'Reprogrammed Androgen Receptor Function in Androgen-Independent Prostate Cancer' has finally been accepted by '''Cell'''.
. 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.


. '''03/20/2009, [http://cancerepigenome.pbwiki.com/ Cancer Epigenomics Workshop]'''
. 04/2012:  Dr.Dean Tang's prostate cancer stem cell paper is accepted in '''Cell Stem Cell'''. Wei is a co-author.


Please join us on May 2nd (Saturday) 2009 at MD Anderson Cancer Center. This meeting is organized by Steffi Oesterreich, Wei Li and Jean-Pierre Issa.
. 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!


. '''03/18/2009, New Student'''
. 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!


Julia Kristine Blackmore, a PhD student in BCM MCB dept.,  will be doing a two-month rotation in our lab.  
[[Image:Banner.jpg‎‎]]


[http://openwetware.org/wiki/Li_Lab:news News Archive]


. '''03/16/2009, New Course'''
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[http://sites.google.com/site/mcbseminar/ 320-466 MCB Seminar]
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. '''01/21/2009, New Paper'''
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A paper titled 'Integrative analysis of HIF binding and transactivation reveals its role in maintaining histone methylation homeostasis' has been accepted by '''PNAS'''.
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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.


. '''01/14/2009, New Postdoc'''
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.


Zhao Xu has accepted our postdoc offer. Zhao will soon finish his PhD in Bioinformatics at Fudan University at Shanghai China, and join our lab this summer. Welcome Zhao!
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.


[http://sites.google.com/a/bcm.edu/lilab/ Lab Intranet]
[http://openwetware.org/wiki/Li_Lab openwetware]
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[[Image:WeiLi.jpg‎]]
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__NOTOC__

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.


Lab Intranet openwetware


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