The overall goal of this project is a better understanding of the mechanisms of cell entry and spread by polyoma virus. This virus infects and transforms rodent cells in culture. When inoculated into newborn mice, it spreads rapidly and induces a wide array of tumors. The pathway and mechanisms by which the virus infects cells will be studied in culture using electron microscopy and deconvolution fluorescence microscopy along with various immunological and biochemical methods.
Specific aims are directed to identifying the mode of internalization, and the pathway of entry into the nucleus. Mutant viruses with defects in the structural proteins that affect entry will be characterized. We have identified an inbred mouse strain which is highly resistant to polyoma infection. The genetic and physiological bases for this host resistance will be investigated in crosses with susceptible mice, and by use of cell cultures derived from the resistant mice. The final goal of this line of investigation is the identification and understanding of the mode of action of the host resistance gene which blocks virus spread. We will also attempt to isolate polyoma virus from wild house mice and confirm the presence or absence of those determinants identified in laboratory strains which confer pathogenic properties to the virus.

Agency
National Institute of Health (NIH)
Institute
National Cancer Institute (NCI)
Type
Research Project (R01)
Project #
5R01CA082395-03
Application #
6647194
Study Section
Experimental Virology Study Section (EVR)
Program Officer
Blair, Donald G
Project Start
2001-09-01
Project End
2006-08-31
Budget Start
2003-09-01
Budget End
2004-08-31
Support Year
3
Fiscal Year
2003
Total Cost
$425,198
Indirect Cost
Name
Harvard University
Department
Pathology
Type
Schools of Medicine
DUNS #
047006379
City
Boston
State
MA
Country
United States
Zip Code
02115
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Chinnapen, Daniel J-F; Hsieh, Wan-Ting; te Welscher, Yvonne M et al. (2012) Lipid sorting by ceramide structure from plasma membrane to ER for the cholera toxin receptor ganglioside GM1. Dev Cell 23:573-86
Carroll, John; Dey, Dilip; Kreisman, Lori et al. (2007) Receptor-binding and oncogenic properties of polyoma viruses isolated from feral mice. PLoS Pathog 3:e179
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Gilbert, Joanna; Dahl, Jean; Riney, Cathy et al. (2005) Ganglioside GD1a restores infectibility to mouse cells lacking functional receptors for polyomavirus. J Virol 79:615-8
Fink, Aliza K; Gurwitz, Jerry; Rakowski, William et al. (2004) Patient beliefs and tamoxifen discontinuance in older women with estrogen receptor--positive breast cancer. J Clin Oncol 22:3309-15
Gilbert, Joanna; Benjamin, Thomas (2004) Uptake pathway of polyomavirus via ganglioside GD1a. J Virol 78:12259-67
Gilbert, Joanna M; Goldberg, Ilya G; Benjamin, Thomas L (2003) Cell penetration and trafficking of polyomavirus. J Virol 77:2615-22

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