Gene expression signatures of radiation response are specific, durable and accurate in mice and humans.

Abstract

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.

Department

Description

Provenance

Citation

Published Version (Please cite this version)

10.1371/journal.pone.0001912

Publication Info

Meadows, Sarah K, Holly K Dressman, Garrett G Muramoto, Heather Himburg, Alice Salter, ZhengZheng Wei, Geoffrey S Ginsburg, Nelson J Chao, et al. (2008). Gene expression signatures of radiation response are specific, durable and accurate in mice and humans. PLoS One, 3(4). p. e1912. 10.1371/journal.pone.0001912 Retrieved from https://hdl.handle.net/10161/13546.

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Scholars@Duke

Salter

Alice Bryn Salter

Assistant Professor of Pediatrics

I am passionate about expanding children's access to mental and behavioral health services through my clinical work and education of medical trainees. I previously practiced General Pediatrics and also had a past career in education (teaching middle and high school sciences). These roles and my experiences as a parent informed my path to a fellowship in Developmental & Behavioral Pediatrics, during which I completed additional training in medical education (earning a certificate as a clinician educator). I now serve as the director of the pediatric residents' Behavior & Development rotation and the co-lead of NC-PAL's education workgroup, providing educational opportunities for primary care clinicians throughout NC. 

As a specialist in Developmental-Behavioral Pediatrics, I provide consultations for children with developmental concerns, including developmental delays, autism, complex ADHD, and academic difficulties. I see patients with known or suspected genetic conditions (including Fragile X Syndrome, Tuberous Sclerosis, Down Syndrome, 22q11 deletion syndrome, Neurofibromatosis, Turner Syndrome, Prader Willi or Angelman Syndrome, Williams Syndrome, and others) who have behavioral concerns or possibly ADHD. 

Ginsburg

Geoffrey Steven Ginsburg

Adjunct Professor in the Department 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.

Chao

Nelson Jen An Chao

Donald D. and Elizabeth G. Cooke Cancer Distinguished 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 improve the long term outcome. There are exploratory protocols for novel therapies such as dendritic cell therapy for several malignancies, antiangiogenesis therapy, graft engineering to prevent graft-versus-host disease and antigen specific T cells or non specific NK cells to prevent relapse. Moreover a strong focus of the program is to develop cord-blood transplantation for adult patients with hematologic malignancies. The laboratory studies center on understanding the immunological events that occur with graft-vs-host disease and methods to prevent this disease. The current efforts focus on understanding murine reconstitution following transplantation, use of a peptide polymer to block MHC class II recognition of minor histocompatibility antigens, use of T cell engineering to prevent graft-versus-host disease at the same time preserving a graft-versus-malignancy effect.

For more information see http://ed-media.mc.duke.edu/BMT.nsf


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