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Mice Lacking RIP3 Kinase are not Protected from Acute Radiation Syndrome.

ABSTRACT: Exposure to high doses of ionizing radiation can cause lethal injury to normal tissue, thus inducing acute radiation syndrome. Acute radiation syndrome is caused by depletion of bone marrow cells (hematopoietic syndrome) and irreparable damage to the epithelial cells in the gastrointestinal tract (gastrointestinal syndrome). Although radiation initiates apoptosis in the hematopoietic and gastrointestinal compartments within the first few hours after exposure, alternative mechanisms of cell death may contribute to injury in these radiosensitive tissues. In this study, we utilized mice lacking a critical regulator of necroptosis, receptor interacting protein 3 (RIP3) kinase, to characterize the role of RIP3 in normal tissue toxicity after irradiation. Our results suggest that RIP3-mediated signaling is not a critical driver of acute radiation syndrome.

SUBMITTER: Castle KD

PROVIDER: S-EPMC6020684 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature

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Mice Lacking RIP3 Kinase are not Protected from Acute Radiation Syndrome.

Castle Katherine D KD Daniel Andrea R AR Moding Everett J EJ Luo Lixia L Lee Chang-Lung CL Kirsch David G DG

Radiation research 20180410 6

Exposure to high doses of ionizing radiation can cause lethal injury to normal tissue, thus inducing acute radiation syndrome. Acute radiation syndrome is caused by depletion of bone marrow cells (hematopoietic syndrome) and irreparable damage to the epithelial cells in the gastrointestinal tract (gastrointestinal syndrome). Although radiation initiates apoptosis in the hematopoietic and gastrointestinal compartments within the first few hours after exposure, alternative mechanisms of cell death ...[more]

PMID: 29634408

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