Radiation exposure induced BBB injury via mitochondria-mediated non-infectious inflammation

Radiation-induced brain injury (RIBI) is a series of brain injuries caused by exposure to high doses of ionizing radiation, characterized by severe cognitive dysfunctions and brain necrosis.In this study, we described a biomimetic human blood-brain barrier (BBB) model that allowed to probe the responses to radiation exposure.This RNA-seq data illustrated that representative RIBI-associated pathological responses including BBB compromise, DNA break, inhibited cell proliferation, cell swelling and release of pro-inflammatory cytokines following acute radiation exposure. Collectively, the study uncovered an unknown mitochondria-mediated inflammation involved in the pathogenesis of RIBI, indicating mitochondria can be utilized as a potential target for developing new radioprotective measures. In this study, we developed a biomimetic human blood-brain barrier (BBB) model composed of multiple cellular components to evaluate the pathogenesis of radiation-induced brain injury (RIBI) following exposure to γ-rays and X-rays. The controls are from brain channel (n=3) and blood channel (n=3) that receive no radiation exposure and are compared to brain channel (n=3) and blood channel (n=3) that receive 16Gy of radiation, respectively.