Herpes viruses are associated with a range of human disease; Burkitts lymphoma and nasopharyngeal carcinoma (Epstein-Barr virus), cytomegalic inclusion disease (Cytomegalovirus), chickenpox and shingles (Varicella- Zoster virus) and oral or genital mucocutaneous lesions (Herpes simplex virus, HSV types 1 and 2). Their ability to remain latent, then reactivate means they present a serious source of infection following immune suppression in organ transplant, chemotherapy of AIDS patients. The recent appearance of acyclovir-resistant HSV strains in CD4-suppressed subjects underlines the importance of developing new therapeutic strategies to combat herpes virus infections. Little is known of how herpes viruses enter and leave cells. Envelope/plasma membrane fusion during infection requires a large number of viral proteins, and the molecular role of each is unknown. Similarly, the mechanism by which newly assembled progeny capsids become enveloped then released from the cell remains unclear. The long term objective of these studies is a molecular dissection of these phenomena, revealing much about the basic biology of the herpes viruses and potentially yielding a wealth of new virus-specific drug targets.
The specific aims are as follows: (1). To investigate the kinetics and morphology of HSV-1 egress from infected cells. A single, synchronized wave of egressing virions will be assayed for DNA packaging, envelopment, acquisition of infectivity and rate of secretion from the cell. Antibodies against the viral capsid will be used to correlate these events with morphological phenomena. (2). To determine the origin of the HSV-1 envelope. The essential HSV glycoprotein gH will be targeted to organelles within HSV infected cells to identify the site of envelopment. Passage of virions through subcellular compartments will be monitored and the kinetics of egress determined. (3). To characterize the defect in the gH mutant tsQ26. Pulse chase experiments will be used to test the hypothesis that the tsQ26 allele of gH is unable to traffic to the site of HSV envelopment at the nonpermissive temperature. (4). To identify regions of glycoprotein gH required for fusion. Regions of the glycoprotein required for envelope/plasma membrane fusion and cell/cell fusion will be determined using a transient expression/complementation assay.

Agency
National Institute of Health (NIH)
Institute
National Institute of Allergy and Infectious Diseases (NIAID)
Type
Research Project (R01)
Project #
5R01AI038265-02
Application #
2376416
Study Section
Experimental Virology Study Section (EVR)
Project Start
1996-03-01
Project End
2001-02-28
Budget Start
1997-03-01
Budget End
1998-02-28
Support Year
2
Fiscal Year
1997
Total Cost
Indirect Cost
Name
Albert Einstein College of Medicine
Department
Anatomy/Cell Biology
Type
Schools of Medicine
DUNS #
009095365
City
Bronx
State
NY
Country
United States
Zip Code
10461
Shanda, Sara K; Wilson, Duncan W (2008) UL36p is required for efficient transport of membrane-associated herpes simplex virus type 1 along microtubules. J Virol 82:7388-94
Mukhopadhyay, Aparna; Lee, Grace E; Wilson, Duncan W (2006) The amino terminus of the herpes simplex virus 1 protein Vhs mediates membrane association and tegument incorporation. J Virol 80:10117-27
Lee, Grace E; Murray, John W; Wolkoff, Allan W et al. (2006) Reconstitution of herpes simplex virus microtubule-dependent trafficking in vitro. J Virol 80:4264-75
Chi, Jung Hee I; Harley, Carol A; Mukhopadhyay, Aparna et al. (2005) The cytoplasmic tail of herpes simplex virus envelope glycoprotein D binds to the tegument protein VP22 and to capsids. J Gen Virol 86:253-61
Kamen, Douglas E; Gross, Sarah T; Girvin, Mark E et al. (2005) Structural basis for the physiological temperature dependence of the association of VP16 with the cytoplasmic tail of herpes simplex virus glycoprotein H. J Virol 79:6134-41
Lee, Grace E; Church, Geoffrey A; Wilson, Duncan W (2003) A subpopulation of tegument protein vhs localizes to detergent-insoluble lipid rafts in herpes simplex virus-infected cells. J Virol 77:2038-45
Gross, Sarah T; Harley, Carol A; Wilson, Duncan W (2003) The cytoplasmic tail of Herpes simplex virus glycoprotein H binds to the tegument protein VP16 in vitro and in vivo. Virology 317:1-12
Dasgupta, A; Wilson, D W (2001) Evaluation of the primary effect of brefeldin A treatment upon herpes simplex virus assembly. J Gen Virol 82:1561-7
Harley, C A; Dasgupta, A; Wilson, D W (2001) Characterization of herpes simplex virus-containing organelles by subcellular fractionation: role for organelle acidification in assembly of infectious particles. J Virol 75:1236-51
Chi, J H; Wilson, D W (2000) ATP-Dependent localization of the herpes simplex virus capsid protein VP26 to sites of procapsid maturation. J Virol 74:1468-76

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