This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. The long-term goal of our work is to understand the mechanism behind the development of morbidity and mortality in infants congenitally infected with human cytomegalovirus (HCMV). In the last 7 years we have shown that HCMV interacts with the key cell cycle regulatory protein p53 and sequesters it, and several key DNA damage proteins, within the viral replication centers. We have recently shown that this sequestration is dependent upon an intact DNA binding domain on the p53 protein and have found 21 consensus binding sites for p53 within the viral genome. These facts have led us to hypothesize that p53 may be recruited as a transcription factor by the virus. We have also observed very early colocalization of the p53 protein with input viral DNA. Coupled with the observations we have made in p53 knockout cells, which show dramatic decreases in viral titers, delays and decreases in viral DNA replication and delays in viral protein expression, we believe that p53 plays important roles at both early and late times post infection with HCMV. It is the major focus of this proposal to ascertain these active roles. We propose three specific aims to accomplish this goal.
AIM 1 is an investigation of the immediate early activation of p53 by HCMV infection.
AIM 2 will determine the role of p53 in viral circularization at early times post infection.
AIM 3 is a determination of the role of p53 as transcriptional activator for viral gene expression. We believe that elucidating the interactions with the key cell cycle regulator p53 may aid in our understanding of the development of the central nervous system manifestations observed in the congenitally infected infant.

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
Exploratory Grants (P20)
Project #
5P20RR015587-07
Application #
7381184
Study Section
Special Emphasis Panel (ZRR1-RI-8 (01))
Project Start
2006-06-01
Project End
2007-05-31
Budget Start
2006-06-01
Budget End
2007-05-31
Support Year
7
Fiscal Year
2006
Total Cost
$248,723
Indirect Cost
Name
University of Idaho
Department
Microbiology/Immun/Virology
Type
Schools of Earth Sciences/Natur
DUNS #
075746271
City
Moscow
State
ID
Country
United States
Zip Code
83844
Kuan, Man I; O'Dowd, John M; Fortunato, Elizabeth A (2016) The absence of p53 during Human Cytomegalovirus infection leads to decreased UL53 expression, disrupting UL50 localization to the inner nuclear membrane, and thereby inhibiting capsid nuclear egress. Virology 497:262-278
Zavala, Anamaria G; O'Dowd, John M; Fortunato, Elizabeth A (2016) Infection of a Single Cell Line with Distinct Strains of Human Cytomegalovirus Can Result in Large Variations in Virion Production and Facilitate Efficient Screening of Virus Protein Function. J Virol 90:2523-35
Kuan, Man I; O'Dowd, John M; Chughtai, Kamila et al. (2016) Human Cytomegalovirus nuclear egress and secondary envelopment are negatively affected in the absence of cellular p53. Virology 497:279-293
Spencer, Simon E F; Besser, Thomas E; Cobbold, Rowland N et al. (2015) 'Super' or just 'above average'? Supershedders and the transmission of Escherichia coli O157:H7 among feedlot cattle. J R Soc Interface 12:0446
Bryant, Amy E; Bayer, Clifford R; Aldape, Michael J et al. (2015) The roles of injury and nonsteroidal anti-inflammatory drugs in the development and outcomes of severe group A streptococcal soft tissue infections. Curr Opin Infect Dis 28:231-9
Kudva, Indira T; Krastins, Bryan; Torres, Alfredo G et al. (2015) The Escherichia coli O157:H7 cattle immunoproteome includes outer membrane protein A (OmpA), a modulator of adherence to bovine rectoanal junction squamous epithelial (RSE) cells. Proteomics 15:1829-42
Haick, Anoria K; Rzepka, Joanna P; Brandon, Elizabeth et al. (2014) Neutrophils are needed for an effective immune response against pulmonary rat coronavirus infection, but also contribute to pathology. J Gen Virol 95:578-90
Kashyap, Bhavani; Pegorsch, Laurel; Frey, Ruth A et al. (2014) Eye-specific gene expression following embryonic ethanol exposure in zebrafish: roles for heat shock factor 1. Reprod Toxicol 43:111-24
Kulkarni, Amit S; Fortunato, Elizabeth A (2014) Modulation of homology-directed repair in T98G glioblastoma cells due to interactions between wildtype p53, Rad51 and HCMV IE1-72. Viruses 6:968-85
Duan, Ying-Liang; Ye, Han-Qing; Zavala, Anamaria G et al. (2014) Maintenance of large numbers of virus genomes in human cytomegalovirus-infected T98G glioblastoma cells. J Virol 88:3861-73

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