Gene expression signatures of radiation response are specific, durable and accurate in mice and humans.
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BACKGROUND: Previous work has demonstrated the potential for peripheral blood (PB) gene expression profiling for the detection of disease or environmental exposures. METHODS AND FINDINGS: We have sought to determine the impact of several variables on the PB gene expression profile of an environmental exposure, ionizing radiation, and to determine the specificity of the PB signature of radiation versus other genotoxic stresses. Neither genotype differences nor the time of PB sampling caused any lessening of the accuracy of PB signatures to predict radiation exposure, but sex difference did influence the accuracy of the prediction of radiation exposure at the lowest level (50 cGy). A PB signature of sepsis was also generated and both the PB signature of radiation and the PB signature of sepsis were found to be 100% specific at distinguishing irradiated from septic animals. We also identified human PB signatures of radiation exposure and chemotherapy treatment which distinguished irradiated patients and chemotherapy-treated individuals within a heterogeneous population with accuracies of 90% and 81%, respectively. CONCLUSIONS: We conclude that PB gene expression profiles can be identified in mice and humans that are accurate in predicting medical conditions, are specific to each condition and remain highly accurate over time.
Gene Expression Profiling
Gene Expression Regulation
Mice, Inbred BALB C
Mice, Inbred C57BL
Reproducibility of Results
Published Version (Please cite this version)10.1371/journal.pone.0001912
Publication InfoChao, Nelson J; Chute, JP; Dressman, HK; Ginsburg, Geoffrey Steven; Himburg, Heather; Meadows, Sarah K; ... Wei, Z (2008). Gene expression signatures of radiation response are specific, durable and accurate in mice and humans. PLoS One, 3(4). pp. e1912. 10.1371/journal.pone.0001912. Retrieved from http://hdl.handle.net/10161/13546.
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Donald D. and Elizabeth G. Cooke Cancer Research Professor
My research interests are in two broad areas, clinical hematopoietic stem cell and cord blood transplantation and in the laboratory studies related to graft vs. host disease and immune reconstitution. On the clinical side we are currently conducting approximately 50 different clinical protocols ranging from preparatory regimens, supportive care studies and disease specific protocols. Most of these clinical studies are centered around studies of the sources of stem cells and the methods to
Professor of Medicine
Dr. Geoffrey S. Ginsburg's research interests are in the development of novel paradigms for developing and translating genomic information into medical practice and the integration of personalized medicine into health care.
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