David T. Brown, PhD

David T. Brown, PhD

Professor

Department:
SOM-Cell and Molecular Biology

Email:
dbrown@umc.edu

Work Phone:
(601) 984-1849

Education

University of Mississippi Medical Center, PhD, Biochemistry1988
Florida State University, MS, Genetics1981
Florida State University, BS, Biology1976

Current Positions

Professor, School of Medicine, Department of Biochemistry2004 - Present
The University of Mississippi Medical Center
Jackson, Mississippi 39216

Academic Appointments or Other Previous Appointments

Associate Professor, The University of Mississippi Medical Center, School of Medicine, Department of Biochemistry2000 - 2004
Assistant Professor, The University of Mississippi Medical Center, School of Medicine, Department of Biochemistry1993 - 2000
Instructor, The University of Mississippi Medical Center, School of Medicine, Department of Biochemistry1991 - 1993

Publications

Journal Article

Brown DT, Wellman SE, Sittman DB. Changes in the levels of three different classes of histone mRNA during murine erythroleukemia cell differentiation Mol. Cell. Biol. 1985 5:2879-2886
Catez F, Brown DT, Misteli T, Bustin M Competition between histone H1 and HMGN proteins for chromatin binding site EMBO Reports 2002; 3:760-766.
Gunjan A, Sittman DB, Brown DB Core histone acetylation is regulated by linker histone stoichiometry in vivo J. Biol. Chem. 2001; 276:3635-3640
Brown DT, Alexander BT, Sittman DB Differential effect of H1 variant overexpression on cell cycle progression and gene expression Nucleic Acids Res. 1996; 24:486-493
Brown DT, Gunjan A, Alexander BT, Sittman DB Differential effect of H1 variant overproduction on gene expression is due to differences in the central globular domain Nucleic Acids Res. 1997; 25:5003-5009
Becker M, Becker A, Miyara F, Han Z, Kihara M, Brown DT, Hager GL, Latham K, Adashi EY, Misteli T Differential in vivo binding dynamics of somatic and oocyte-specific linker histones in oocytes and during ES cell nuclear transfer Mol. Biol. Cell. 2005; 16:3887-3895
Stasevich, TJ, Mueller F, Brown DT, McNally JG Dissecting the binding mechanism of the linker histone in live cells: an integrated FRAP analysis EMBO J. 2010; 29:1225-1234
Kumar A, Brown DT, Leno GH DNA intercalators differentially affect chromatin structure and DNA replication in Xenopus egg extract Anti-Cancer Drugs 2004; 15:633-639
Misteli T, Gunjan, A, Hock R, Bustin M, Brown DT Dynamic binding of histone H1 to chromatin in living cells Nature. 2000; 408:877-881
Gunjan A, Alexander BT, Sittman DB, Brown DT Effects of H1 histone variant over-expression on chromatin structure J. Biol. Chem. 1999; 274:37950-37956
Yellajoshyula D, Brown DT Global modulation of chromatin dynamics mediated by dephosphorylation of linker histone H1 is necessary for erythroid differentiation Proc. Natl. Acad. Sci. (USA) 2006; 103:18568-18573
Phair RD, Scaffidi P, Elbi C, Vecerova J, Dey A, Ozato K, Brown DT, Hager G, Bustin M, Misteli T Global nature of dynamic protein-chromatin interactions in vivo: three-deminsional scanning and dynamic interaction networks of chromatin proteins Mol. Cell. Biol. 2004; 24:6393-6404
Brown DT, Yang Y.-S., Sittman DB. Histone gene switching in murine erythroleukemia cells is differentiation specific and occurs without loss of cell cycle regulation Mol. Cell. Biol. 1988 8:4406-4415
Brown DT Histone H1 and the dynamic regulation of chromatin function Biochemistry Cell Biol. 2003; 81:221-227
Lu ZH, Sittman DB, Brown DT, Munshi R, Leno GH Histone H1 modulates DNA replication through multiple pathways in Xenopus egg extract J. Cell. Sci. 1997; 110:2745-2758
De S, Brown DT, Lu Z.H, Leno GH, Wellman SE, Sittman DB Histone H1 variants differentially inhibit DNA replication through an affinity for chromatin mediated by their carboxyl-terminal domains Gene, 2002; 292:173-181.
Brown DT Histone variants: are they functionally heterogeneous? Genome Biology 2001; 2:6.1-6.6
Meshorer E, Yellajoshyula D, Goerge E, Scambler PJ, Brown DT, Misteli T Hyperdynamic plasticity of chromatin proteins in pluripotent embryonic stem cells. Dev.Cell 2006; 10:105-116
Brown DT, Sittman DB Identification through overexpression and tagging of the variant type of the mouse H1e and H1c genes J. Biol. Chem. 1993; 268:713-718
Yang Y-S, Brown DT, Wellman SE, Sittman DB Isolation and characterization of a mouse fully replication-dependent H1 gene within a cluster of core histone genes J. Biol. Chem. 1987 262:17118-17125
Dong Y, Sirotkin AM, Yang Y.-S, Brown DT, Sittman DB, Skoultchi AI Isolation and characteriza¬tion of two replication-dependent mouse H1 histone genes Nucleic Acids Res.1994; 22:1421-1428
Brown DT, Izard T, Misteli T Mapping the interaction surface of linker histone H1(0) with the nucleosome of native chromatin in vivo Nat.Struct.Mol.Biol. 2006; 13:250-255
George EM, Izard T, Anderson SD, Brown DT Nucleosome interaction surface of linker histone H1c is distinct from that of H10 J. Biol. Chem. 2010; 285:20891-20896
Gunjan A, Brown DT Overproduction of histone H1 variants in vivo increases basal and hormone-induced activity of the mouse mammary tumor virus promoter Nucleic Acids Res. 1999; 27:3355-3363
Brunden KR, Brown DT. P0 mRNA expression in cultures of Schwann cells and neurons that lack basal lamina and myelin J. Neurosci. 1990 27:159-168
George EM, Brown DT Prothymosin α is a component of a linker histone chaperone FEBS Letters 2010; 584:2811-2836
Brown DT, Morris GF, Chodchoy N, Soprecher C, Marzluff WF Structure of the sea urchin U1 repeat Nucleic Acids Res. 1985 13:537-556
Chinthalapudi K, Rangarajan ES, Brown DT, Izard T, Differential lipid binding of vinculin isoforms promotes quasi-equivalent dimerization. Proceedings of the National Academy of Sciences of the United States of America, 2016 Aug 23;113(34):9539-442016
Flanagan TW, Files JK, Casano KR, George EM, Brown DT, Photobleaching studies reveal that a single amino acid polymorphism is responsible for the differential binding affinities of linker histone subtypes H1.1 and H1.5. Biology open, 2016 Feb 24;5(3):372-802016
Izard T, Brown DT, Mechanisms and Functions of Vinculin Interactions with Phospholipids at Cell Adhesion Sites. The Journal of biological chemistry, 2016 Feb 5;291(6):2548-552016
Flanagan TW, Brown DT, Molecular dynamics of histone H1. Biochimica et biophysica acta, 2016 Mar;1859(3):468-752016
Chinthalapudi K, Rangarajan ES, Patil DN, George EM, Brown DT, Izard T, Lipid binding promotes oligomerization and focal adhesion activity of vinculin. The Journal of cell biology, 2014 Dec 8;207(5):643-562014
Jørgensen S, Dyhring T, Brown DT, Strøbæk D, Christophersen P, Demnitz J, A high-throughput screening campaign for detection of ca(2+)-activated k(+) channel activators and inhibitors using a fluorometric imaging plate reader-based tl(+)-influx assay. Assay and drug development technologies, 2013 Apr;11(3):163-722013

Editorial

Brown DT, Izard T, Vinculin-cell membrane interactions. Oncotarget, 2015 Oct 27;6(33):34043-42015

Presentations

State/Local Invited Seminars/Lectures, Fluorescent recovery after photobleaching (FRAP): amethod to study protein-nucleic acid binding in vivo, Inaugural Mississippi Biophysical Consortium, University of Mississippi, Oxford05/2008
National and International Invited Seminars/Lectures, Role of H1 in modulating chromatin structure during the differentiation of mammalian cells, Department of Biomedical Sciences, Florida State College of Medicine09/2007
Scientific Presentations, H1 - who needs it anyway, Department of Biochemistry, The University of Mississippi Medical Center2007
National and International Invited Seminars/Lectures, Mapping the interaction surface of the linker histone H1 with the nucleosomes of native chromatin in vivo, 27th Annual Aswilomar Chromatin & Chromosomes Conference2005
Scientific Presentations, Mapping H1 binding interactions by fluroescent recovery after photobleaching, Department of Biochemistry, The University of Mississippi Medical Center2003
Scientific Presentations, Analysis of histone H1 binding to nucleosomes in living cells, Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota2002
Scientific Presentations, Dynamic interaction of histone H1 with chromatin in living cells, Department of Structural Biology, St. Jude Children's Hospital2002
National and International Invited Seminars/Lectures, Dynamics of histone H1 binding to chromatin in living cells2002
Scientific Presentations, Dynamic interation of histone H1 with chromatin in living cells, Stritch School of Medicine, Loyola University Chicago2001
Scientific Presentations, Dynamics of histone H1 binding to chromatin in living cells, Department of Biochemistry, The University of Mississippi Medical Center2001
Scientific Presentations, Ethical considerations of the cloning of mammalian organisms, Department of Business Administration, Belhaven College, MS1999
Scientific Presentations, Linker histone and chromatin structure and function: in vivo studies, National Institutes of Health, National Cancer Institute, Bethesda, MD1999
Scientific Presentations, Over-expression of linker histone variants reduces the rate of spontaneous and benzo(a)pyrene-induced transformation of murine BASL/c 3T3 cells, American Cancer Society Site Visit, The University of Mississippi Medical Center1999
Scientific Presentations, Role of H1 in transcriptional regulation, Department of Physiology, The University of Mississippi Medical Center1999
Scientific Presentations, Effects of H1 Variant Overexpression on Chromatin Structure, Transcription of the MMTV Promoter, and Cell Cycle Progression, Department of Biochemistry, The University of Mississippi Medical Center1998
Scientific Presentations, Role of H1 Variants in Cell Cycle Progression and Oncogenesis, American Cancer Society Site Visit, University of Mississippi Medical Center1997
Scientific Presentations, Effects of H1 Variant Overexpression on Transcription and Cell Cycle Progression, Department of Biochemistry, The University of Mississippi Medical Center1995
Scientific Presentations, Methods for Introduction of DNA into Mammalian Cells and Targeted Gene Inactivation, Department of Physiology, The University of Mississippi Medical Center1995
Scientific Presentations, Effects of H1 Variant Overexpression on Transcription and Cell Cycle Progression, Department of Biochemistry, Mississippi State University1994
Scientific Presentations, Effects of H1 Variant Overexpression on Transcription and Cell Cycle Progression, Department of Pharmacology, The University of Mississippi Medical Center1994
Scientific Presentations, Functional Significance of H1 Variant Heterogeneity, Department of Physiology, The University of Mississippi Medical Center1994
Scientific Presentations, Transient Inhibition of DNA Replication in H1 variant-overexpressing cell lines is associated with a high H1/nucleosome ratio, Department of Biochemistry, The University of Mississippi Medical Center1993
Scientific Presentations, Structure of mouse and sea urchin small nuclear RNA genes, Department of Chemistry, Florida State University1983
Scientific Presentations, Basics of Biomedical Research and Ethical Responsibilities of Data Collection, Analysis and Reporting, Department of Psychiatry, University of Mississippi Medical Center

Honors, Awards, and Recognition

Bronz Award for Excellence in Research2003
Thomas M. (Peter) Blake Academy of Teaching Excellence2003
Honor Society of Phi Kappa Phi1987
Robert A Mahaffey Graduate Student Research Award, The University of Mississippi Medical Center1986
University Fellowship, Florida State University1977
Undergraduate Research Award, Florida State University1976

Committee Service

School Of Medicine - Admissions, Member2004 - 2008
School Of Medicine - Curriculum, Member2002 - 2010

Teaching Experience

610, Medicine, Course, Lecturer, Medical BiochemistryFall 2008
744, Graduate, Course, Lecturer, Molecular Cell Biology 2008
610, Medicine, Course, Lecturer, Medical BiochemistryFall 2007
710, Graduate, Course, Lecturer, Graduate Biochemistry 2007
610, Medicine, Course, Lecturer, Medical BiochemistryFall 2006
710, Graduate, Course, Lecturer, Graduate Biochemistry 2006
744, Graduate, Course, Lecturer, Molecular Cell Biology 2006
610, Medicine, Course, Course Director, Medical BiochemistryFall 2005
710, Graduate, Course, Lecturer, Graduate Biochemistry 2005
610, Medicine, Course, Course Director, Medical BiochemistryFall 2004
710, Graduate, Course, Lecturer, Graduate Biochemistry 2004
744, Graduate, Course, Lecturer, Molecular Cell Biology 2004
610, Medicine, Course, Lecturer, Medical BiochemistryFall 2003
610, Medicine, Course, Course Director, Medical BiochemistryFall 2003
710, Graduate, Course, Lecturer, Graduate Biochemistry 2003
742, Graduate, Course, Lecturer, Molecular Biology Methods 2003
604, Dentistry, Lecture, Lecturer, Dental BiochemistryFall 2002
610, Medicine, Course, Lecturer, Medical BiochemistryFall 2002
710, Graduate, Course, Course Director, Graduate Biochemistry 2002
744, Graduate, Course, Lecturer, Molecular Cell biology 2002
610, Medicine, Course, Lecturer, Medical BiochemistryFall 2001
710, Graduate, Course, Course Director, Graduate Biochemistry 2001
742, Medicine, Course, Lecturer, Molecular Biology Methods 2001
610, Medicine, Lecture, Lecturer, Medical BiochemistryFall 2000
710, Graduate, Course, Course Director, Graduate Biochemistry 2000
610, Medicine, Lecture, Lecturer, Medical BiochemistryFall 1999
710, Graduate, Course, Course Director, Graduate Biochemistry 1999
610, Medicine, Lecture, Lecturer, Medical BiochemistryFall 1998
710, Graduate, Course, Course Director, Graduate Biochemistry 1998
610, Medicine, Lecture, Lecturer, Medical BiochemistryFall 1997
710, Graduate, Course, Course Director, Graduate Biochemistry 1997
610, Medicine, Lecture, Lecturer, Medical BiochemistryFall 1996
710, Graduate, Course, Course Director, Graduate Biochemistry 1996
610, Medicine, Lecture, Lecturer, Medical BiochemistryFall 1995
710, Graduate, Course, Course Director, Graduate Biochemistry 1995
720, Medicine, Course, Lecturer, Molecular Genetics 1995
610, Medicine, Lecture, Lecturer, Medical BiochemistryFall 1994
710, Graduate, Course, Course Director, Graduate Biochemistry 1994
610, Medicine, Lecture, Lecturer, Medical BiochemistryFall 1993
710, Graduate, Course, Lecturer, Graduate Biochemistry 1993
610, Medicine, Lecture, Lecturer, Medical BiochemistryFall 1992
740, Medicine, Course, Lecturer, Biochemical Methods 1992
710, Graduate, Course, Lecturer, Graduate Biochemistry 1992
710, Graduate, Course, Lecturer, Graduate Biochemistry 1991
610, Medicine, Lecture, Lecturer, Medical Biochemistry 1991
604, Dentistry, Lecture, Lecturer, Dental BiochemistryFall 1990

Directed Student Learning

Dissertation Committee Chair, Undetermined
Advised: Payal Vyas
2003 - Present
Dissertation Committee Chair, Advised: Akash Gunjan
Dissertation Committee Chair, Advised: Asmita Kumar
Dissertation Committee Chair, Advised: Dhananjay Yellajoshula
Dissertation Committee Chair, Determinants of linker histone binding and dynamics
Advised: Eric George
Dissertation Committee Chair, Advised: Rajesh Savkur
Dissertation Committee Member, Advised: Ashley Herring
Dissertation Committee Member, Advised: Barbara Alexander
Dissertation Committee Member, Advised: Gene Bidwell
Dissertation Committee Member, Advised: Holland Alday
Dissertation Committee Member, Advised: Naved Alam
Dissertation Committee Member, Advised: Nian Huang
Dissertation Committee Member, Advised: Oca Cassio
Dissertation Committee Member, Advised: Rajan Munshi
Dissertation Committee Member, Advised: Shama Moktan
Dissertation Committee Member, Advised: Sheetal Bhan
Dissertation Committee Member, Advised: Sidhartha De
Dissertation Committee Member, Advised: Valeria Cuchiarelli
Dissertation Committee Member, Advised: Zhi Hong Lu