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IMV Executive Assistant
tel. (612) 624-1926
fax. (612) 625-1108
18-242 Moos Tower
515 Delaware St. SE
Minneapolis, MN 55455
BS, University of Minnesota-Twin Cities, 1988
PhD, University of Wisconsin, 1995
Herpesviruses. Herpesviruses are significant causes of morbidity and mortality worldwide. My lab is interested in understanding how herpesviruses enter host cells. We study the alpha herpesviruses, such as herpes simplex virus type 1 (HSV-1), as model herpesviruses. Herpesvirus virions are enveloped by a lipid bilayer obtained from the host cell and that bilayer is studded with viral envelope glycoproteins. The glycoproteins help the virus evade host immune responses as well as to mediate the attachment and fusion of the viral particle with the host cell. This is a critical step in virus replication because the virus must gain entry into the cell to replicate. Whereas most viruses use one or two surface proteins to enter host cells, HSV-1 uses at least 5 surface glycoproteins to enter host cells. There are four envelope glycoproteins (gB, gD, gH and gL) that are necessary and sufficient for membrane fusion induced by HSV-1 and these form the core membrane fusion machinery. One of the glycoproteins, gD, must bind a cell-surface receptor for membrane fusion and virus entry to occur. We have previously identified cell-surface receptors for HSV-1 entry and analyzed the structure/function relationship of one cell-surface receptor, nectin-1. We also study the molecular mechanism of the fusion event. We have identified a hemifusion intermediate in the HSV-1 fusion process. We are conducting extensive mutagenesis on the glycoproteins of the core fusion machinery and testing those mutants in virus entry and cell fusion assays to shed light on the role each glycoprotein plays in the fusion process. We are also examining the protein-protein interactions required for membrane fusion using fluorescence resonance energy transfer and other advanced microscopy techniques. A thorough understanding of the molecular details of virus entry will facilitate the design of anti-viral therapies to block the process.
RNA viruses. Many viruses with RNA genomes have emerged in the last thirty years to cause debilitating and deadly disease throughout the world. These viruses include human immunodeficiency virus, hepatitis viruses, west nile virus, dengue virus, respiratory syncytial virus and others. We are interested in identifying known and novel small molecules with anti-viral activity against these viruses. We are also pursuing the discovery and characterization of novel targets for anti-viral intervention.
'Wisc-e-sota', the 1st Joint UMN-UW Virology Training Grant Symposium will be held on Friday, Sepbember 20th, 2013 at the Uniiversity of Wisconsin-La Crosse, Cartwright Center. This is the inaugural collaborative symposium of the NIH T32-supported virology training programs at the University of Wisconsin-Madison and the University of Minnesota-Twin Cities. Talks and poster sessions will be presented by students, postdocs and faculty.
The 2013 IMV Symposium was held in May, 2013 and featured Vincent Racaniello as the Keynote Speaker as well as the recording of an episode of 'This Week in Virology'. Pictures from the IMV Symposium can be found on the IMV Facebook page and a videotape of the TWiV podcast can be viewed at www.twiv.tv
Read about bacteriophage phi 29 and why it matters.
Explore nearly a century's worth of discovery in the field of virology at the University of Minnesota.
"This Week in Virology" from professor Vincent Racaniello.