Xiaoman Shawn Li

Associate Professor

Burnett School of Biomedical Science
Department of Electrical Engineering and Computer Science

University of Central Florida

Office: HEC210

Email: xiaoman@mail.ucf.edu

Telephone: 407-823-4811

Fax: 407-823-5835


Education

  • Stanford University, Statistics, postdoc, 2004-2005.
  • Harvard University, Statistics, postdoc, 2003-2004.
  • University of Southern California, Computational Biology, PhD, 1999-2002.

Research

Our lab is interested in solving statistical and algorithmic problems in computational biology. The beauty of this exciting area lies on the fact that it has a direct impact in the real world and statistics and algorithms really matter in data mining here. In addition, the biological problems challenge the current statistical and algorithmic methods and provide a great opportunities to advance and create novel computational methods. We were one of the international groups funded by NIH to develop technology for the ENCODE projects. Currently, our lab is focusing on the following classification and data integration problems: (1) transcription factor binding site prediction; (2) enhancer target gene prediction; (3) Metagenomics.

Announcement: We welcome UCF undergraduates and graduates from EECS, BSBS, biology, Statistics and Mathematics to join our lab. If you have excellent programming skill and are highly motivated to work on bioinformatics, please email me to make an appointment. .

Publications

    Ding J, Li X, Hu H. MicroRNA modules prefer to bind weak and unconventional target sites. Bioinformatics .2014; doi: 10.1093/bioinformatics/btu833.

    Zheng Y, Li X, Hu H. Comprehensive discovery of DNA motifs in 349 human cells and tissues reveals new features of motifs. Nucleic Acids Research .2014; doi: 10.1093/nar/gku1261.

    Ding J, Dhillon V, Li X, Hu H. Systematic discovery of cofactor motifs from ChIP-seq data by SIOMICS. Methods . 2014; doi:10.1016/j.ymeth.2014.08.006

    Zheng Y, Li X, Hu H. Computational discovery of feature patterns in nucleosomal DNA sequences. Genomics . 2014; 104(2):87-95

    Wang Y, Li X, Hu H. H3K4me2 reliably defines transcription factor binding regions. Genomics . 2014; 103(2-3):222-228.

    Ding J, Hu H, Li X. SIOMICS: a Novel Approach for Systematic Identification of Motifs in ChIP-seq Data . Nucleic Acids Research . 2014; 42(5): e35.

    Ding J, Hu H, Li X. NIM, A novel computational method for predicting nuclear-encoded chloroplast proteins. Journal of Medical and Bioengineering. 2013; 2(2): 115-119.

    Ding J, Cai X, Wang Y, Hu H, Li X. ChIPModule: Systematic discovery of transcription factors and their cofactors from ChIP-seq data. Pac Symp Biocomput. 2013.

    Ding J, Li X, Hu H. Systematic Identification of cis-regulatory elements in Chlamydomonas reinhardtii genome using comparative genomics . Plant Physiology. 2012;160(2):613-23.

    Wang Y, Ding J, Daniell H, Hu H, Li X. Motif analysis unveils the possible co-regulation of chloroplast genes and nuclear genes encoding chloroplast proteins . Plant Molecular Biology . 2012;80(2):177-87.

    Ruppert SM, Chehtane M, Zhang G, Hu H, Li X, Khaled AR. JunD/AP-1-Mediated Gene Expression Promotes Lymphocyte Growth Dependent on Interleukin-7 Signal Transduction. . Plos One. 2012;7(2):e32262.

    Ding J, Hu H, Li X. Thousands of cis-regulatory sequences are shared by Arabidopsis and populus. Plant Physiology. 2012;158(1):145-55. Epub 2011 Nov 4.

    Wang Y, Li X, Hu H. Transcriptional regulation of co-expressed microRNA targt genes. Genomics. 2011;98(6):445-52.

    Balakrishnan MP, Cilenti L, Ambivero C, Goto Y, Takata M, Turkson J, Li XS, Zervos AS. THAP5 is a DNA binding transcriptional repressor that is regulated in melanoma cells during DNA damage-induced cell death. Biochem Biophys Res Commun.. 2011; 404(1):195-200.

    Schanen BC, Li X. Transcriptional regulation of mammalian miRNA genes. Genomics. 2011; 97(1):1-6.

    Cai X, Hou L, Su N, Hu H, Deng M, Li X. Systematic identification of conserved motif modules in the human genome. BMC Genomics. 2010; 11:567. Database. Software.

    Hu H, Li X. Transcription factor binding site identification by phylogenetic footprinting. Book Chapter in Frontiers in Computational and Systems Biology, 113-132, 2010.

    Hu H, Li X. Whole genome identification of target genes of transcription factors. The 2010 International Conference On Bioinformatics and Biomedical Technology, Chengdu, China. April 16-18, 2010.

    Hu H, Li X. Hierarchical order of gene expression levels . The 2010 International Conference On Bioinformatics and Biomedical Technology, Chengdu, China. April 16-18, 2010.

    Cai X, Hu H, Li X. A new measurement of sequence conservation. BMC Genomics. 2009; 10:623

    Sadat MA, Dirscherl S, ..., Li X, Grez M, Cornetta K, Mooney SD, Dinauer MC. Retroviral vector integration in post-transplant hematopoiesis in mice conditioned with either submyeloablative or ablative irradiation . Gene Ther. 2009; 16:1452-1464.

    Ma X, Zhang K, Li X. Evolution of Drosophila Ribosomal Protein Gene Core Promoters. Gene. 2009; 432(2):54-59.

    Hu J, Hu H, Li X. MOPAT: a graph-based method to predict recurrent cis-regulatory modules from known motifs. Nucleic Acids Res. 2008; 36(13):4488-97. Unix version download, cygwin version download, Windows version download.

    Peters B, Dirscherl S, Dantzer J, Nowacki J, Cross S, Li X, Cornetta K, Dinauer MC, Mooney SD. Automated analysis of viral integration sites in gene therapy research using the SeqMap web resource .Gene Ther. 2008; 15(18):1294-8.

    Georgiadis MM, Luo M, Gaur RK, Delaplane S, Li X, Kelley MR. Evolution of the redox function in mammalian apurinic/apyrimidinic endonuclease . Mutat Res. 2008; 643(1-2):54-63.

    Hu H, Li X. Networking pathways unveils association between obesity and non-insulin dependent diabetes mellitus . Pac Symp Biocomput. 2008; 13:255-66.

    Humphreys TL, Li L, Li X, Janowicz DM, Fortney KR, Zhao Q, Li W, McClintick J, Katz BP, Wilkes DS, Edenberg HJ, Spinola SM. Dysregulated immune profiles for skin and dendritic cells are associated with increased host susceptibility to Haemophilus ducreyi infection in human volunteers . Infect Immun. 2007; 75(12):5686-97.

    Cai, X., Hu, H., Li X. Tree Gibbs Sampler: Identifying Conserved Motifs without Aligning Orthologous Sequences. Bioinformatics. 2007; 23(15):2013-4. Windows version download. Unix version download. full version

    Hu H., Li X. Transcriptional regulation in eukaryotic ribosomal protein genes . Genomics. 2007; 90(4):421-3.

    Li X. Cancer Bioinformatics--From Therapy Design to Treatment . Briefings in Bioinformatics. 2006.

    Li L, Cheng AS, Jin VX, Paik HH, Fan M, Li X, Zhang W, Robarge J, Balch C, Davuluri RV, Kim S, Huang TH, Nephew KP. A mixture model-based discriminate analysis for identifying ordered transcription factor binding site pairs in gene promoters directly regulated by estrogen receptor-alpha . Bioinformatics. 2006; 22(18):2210-6.

    Li X., Zhong S., Wong WH. Reliable transcription factor binding sites prediction in eukaryotes by phylogenetic verification. Proc Natl Acad Sci U S A. 2005; 102(47):16945-50.

    Li X., Wong WH. Sampling motifs on phylogenetic trees . Proc Natl Acad Sci U S A. 2005; 102(27): 9481-6. Windows version download. Unix version download. full version

    LaRocque R., Harris JB, Dziejman M., Li X. et al. Transcriptional Profiling of Vibrio cholerae Recovered Directly from Early and late human infection . Infection and Immunity. 2005; 73(8), 4488-93.

    Bjorkbacka H, Fitzgerald KA, Huet F, Li X, et al. The induction of macrophage gene expression by LPS predominantly utilizes MyD88-independent signaling cascades . Physiol Genomics. 2004; 19(3):319-30.

    Li X and Waterman MS. Estimate the repeat structure of a genome without assembly . Genome Research. 2003; 13(8):1916-22.

    Yeh RF, Speed T., Waterman MS, Li X. Predicting progress in shotgun sequencing with paired ends . better version .Center for Bioinformatics & Molecular Biostatistics, 2002.

Software Tools and Resources

    SIOMICS .

    ChIPModule .

    conserved motif combinations in Arabidopsis and poplar .

    GenomeModule: predicted motif combinations and CRMs in the human genome .

    MOPAT Unix version, MOPAT cygwin version, MOPAT Windows version.

    Tree Gibbs Sampler

Grants

Showalter Award. Sampling Cis-elements on Phylogenetic Trees and Its Application to Developmental Biology. July 2006---June 2008.

NIH R01. Discovery of Cis-Regulatory Modules in the Human Genome, September 2007---July 2011.

NSF . III: Small: Computational Inference of Microbial Community Structures from Environmental Shotgun Reads , October 2012---September 2015.

NIH R01 (PI: Dr. Osborne). Sterol Relgulatory Element Binding Proteins in Regulation of Lipid Metabolism , August 2014---July 2019.

Teaching

Bioinformation and Genomics, Fall 2009
Structure Bioinformatics, Spring 2010
Sequence Analysis , Fall 2010
Structure Analysis , Spring 2011
Sequence Analysis , Fall 2011
Structure Analysis , Spring 2012
Sequence Analysis , Fall 2012

Visit our group page for more information.


Current Students
    Daniella Badal, Biomolecular Science Center undergraduate

    Julian Quintana, Biomolecular Science Center undergraduate

    Jun Ding, EECS PhD, Co-advising

    Desislava Doncheva, EECS undergraduate

    Shawn Hendricks, Biomolecular Science Center PhD

    Vikram Dhillon, Biomolecular Science Center undergraduate

    Michael Venincasa, high school student

Past Students and Postdocs
    Xiaohui Cai, Postdoctoral Fellow (2006-2008)

    Jianfei Hu, Postdoctoral Fellow (2006-2008)

    Erik Ladewig, EECS master student (2008-2010)

    Jeremy Keller, Biomolecular Science Center, undergraduate (2010-2011)

    Luke Stevens, College of Medicine, MD student (2009-2010)