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How Do Tissues Respond to Damage at the Cellular Level? The Role of Cytokines in Irradiated Tissues
Mary Helen Barcellos-Hoff
Vol. 150, No. 5, Supplement: Madame Curie's Discovery of Radium (1898): A Commemoration by Women in Radiation Sciences (Nov., 1998), pp. S109-S120
Published by: Radiation Research Society
Stable URL: http://www.jstor.org/stable/3579813
Page Count: 12
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The capacity of ionizing radiation to affect tissue function, control tumor growth and elicit pathological sequelae has been attributed in great part to its effects on cellular DNA, which, as the transmitter of genetic information, can both register damage and perpetuate it. Nonetheless, multicellular organisms function as the result of the cooperation of many cell types. What then occurs when individual cells are damaged by ionizing radiation? It tissue response a sum of cellular effects such as cell death and DNA damage? Or does the tissue respond as a coherent unit to the damage of its parts? In this paper, data in support of the latter model that indicate a role for cytokines, in particular transforming growth factor β1, as critical components of extracellular signaling pathways that mediate tissue response to radiation will be reviewed. The key to manipulating the consequences of radiation exposure lies in understanding the complex interplay of events initiated at the cellular level, but acting on the tissue.
Radiation Research © 1998 Radiation Research Society