Radiation-Induced Changes in Gene Expression Involve Recruitment of Existing Messenger RNAs to and from Polysomes

ABSTRACT: Although ionizing radiation has been shown to influence gene transcription, little is known about the effects of radiation on gene translational efficiency. To obtain a genome-wide perspective of the effects of radiation on gene translation, microarray analysis was done on polysome-bound RNA isolated from irradiated human brain tumor cells; to allow for a comparison with the effects of radiation on transcription, microarray analysis was also done using total RNA. The number of genes whose translational activity was modified by radiation was f10-fold greater than those whose transcription was affected. The radiation-induced change in a gene’s translational activity was shown to involve the recruitment of existing mRNAs to and away from polysomes. Moreover, the change in a gene’s translation

ORGANISM(S): Homo sapiens

SUBMITTER: Shuping Zhao 

PROVIDER: E-GEOD-11517 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress