): The candidate, Dr. David Gius, will be an instructor in the Department of Radiation Oncology at Washington University, St Louis, with significant clinical and basic science experience, who seeks additional training in the molecular biology of cell cycle regulation. Dr. Gius will begin working on the mechanisms of programmed cell death, apoptosis, that use cellular pathways independent of tumor suppressor gene p53. While p53 is a central target inducing apoptosis following chemotherapeutic or ionizing radiation, most human malignancies lack a functional p53 protein. Therefore, a model system to study apoptosis in a p53 independent manner, perhaps involving other cell cycle checkpoint target(s), presents the opportunity to study apoptosis in an oncologically relevant manner. T-cell receptor (TCR) activation-induced apoptosis is a unique apoptotic pathway that normally eliminates deleterious T-cell clones in the functional development of the immune system. Strong activation of the TCR in actively dividing T-cells results in a rapid and specific apoptotic death that functions in a p53 independent manner. This model system will be used to gain new insight into the general principles of p53-independent apoptosis and identify potential targets leading to new therapeutic strategies. Ultimately, Dr. Gius wishes to join the faculty at Washington University, where he will apply these studies toward improving the treatment of human malignancies with ionizing radiation. The funds provided by this award are instrumental in allowing Dr. Gius to achieve these goals.

Agency
National Institute of Health (NIH)
Institute
National Cancer Institute (NCI)
Type
Clinical Investigator Award (CIA) (K08)
Project #
5K08CA072602-04
Application #
6173086
Study Section
Subcommittee G - Education (NCI)
Program Officer
Eckstein, David J
Project Start
1997-09-30
Project End
2001-08-31
Budget Start
2000-09-01
Budget End
2001-08-31
Support Year
4
Fiscal Year
2000
Total Cost
$83,419
Indirect Cost
Name
Washington University
Department
Radiation-Diagnostic/Oncology
Type
Schools of Medicine
DUNS #
068552207
City
Saint Louis
State
MO
Country
United States
Zip Code
63130
Sun, Lunching; Huang, Lei; Nguyen, Phuongmai et al. (2008) DNA methyltransferase 1 and 3B activate BAG-1 expression via recruitment of CTCFL/BORIS and modulation of promoter histone methylation. Cancer Res 68:2726-35
Gius, David; Cui, Hengmi; Bradbury, C Matthew et al. (2004) Distinct effects on gene expression of chemical and genetic manipulation of the cancer epigenome revealed by a multimodality approach. Cancer Cell 6:361-71
Smart, DeeDee K; Ortiz, Karen L; Mattson, David et al. (2004) Thioredoxin reductase as a potential molecular target for anticancer agents that induce oxidative stress. Cancer Res 64:6716-24
Mattson, D; Bradbury, C M; Bisht, K S et al. (2004) Heat shock and the activation of AP-1 and inhibition of NF-kappa B DNA-binding activity: possible role of intracellular redox status. Int J Hyperthermia 20:224-33
Bisht, K S; Bradbury, C M; Zoberi, I et al. (2003) Inhibition of cyclooxygenase-2 with NS-398 and the prevention of radiation-induced transformation, micronuclei formation and clonogenic cell death in C3H 10T1/2 cells. Int J Radiat Biol 79:879-88
Lin, Xiao; Zhang, Fanjie; Bradbury, C Matthew et al. (2003) 2-Deoxy-D-glucose-induced cytotoxicity and radiosensitization in tumor cells is mediated via disruptions in thiol metabolism. Cancer Res 63:3413-7
Zoberi, Imran; Bradbury, C Matthew; Curry, Heather A et al. (2002) Radiosensitizing and anti-proliferative effects of resveratrol in two human cervical tumor cell lines. Cancer Lett 175:165-73
Karimpour, Shervin; Lou, Junyang; Lin, Lilie L et al. (2002) Thioredoxin reductase regulates AP-1 activity as well as thioredoxin nuclear localization via active cysteines in response to ionizing radiation. Oncogene 21:6317-27
Locke, J E; Bradbury, C M; Wei, S J et al. (2002) Indomethacin lowers the threshold thermal exposure for hyperthermic radiosensitization and heat-shock inhibition of ionizing radiation-induced activation of NF-kappaB. Int J Radiat Biol 78:493-502
Bradbury, C M; Locke, J E; Wei, S J et al. (2001) Increased activator protein 1 activity as well as resistance to heat-induced radiosensitization, hydrogen peroxide, and cisplatin are inhibited by indomethacin in oxidative stress-resistant cells. Cancer Res 61:3486-92

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