Project description:High-dose ionizing radiation-induced pulmonary injury. To characterize these changes, we performed RNA sequencing (RNA-seq) on lung tissues isolated from mice exposed to 90 Gy irradiation. Samples were collected at 8, 11, and 14 days post-irradiation, and non-irratied controls. RNA was extracted and libraries were prepared using a stranded RNA-seq protocol, followed by sequencing on the Illumina platform. 해석
Project description:Total lung RNA from 3 mouse strains after 18Gy thoracic irradiation. Thoracic cavity radiotherapy is limited by the development of alveolitis and fibrosis in susceptible patients. To define the response to 18 Gy pulmonary irradiation in mice, at the expression level, and to identify pathways which may influence the alveolitis and fibrosis phenotypes expression profiling was completed. Male mice of three strains, A/J (late alveolitis response), C3H/HeJ (C3H, early alveolitis response) and C57BL/6J (B6, fibrosis response) were exposed to thoracic radiation, euthanised when moribund and lung tissue gene expression was assessed with microarrays.
Project description:Total lung RNA from 3 mouse strains after 18Gy thoracic irradiation. Thoracic cavity radiotherapy is limited by the development of alveolitis and fibrosis in susceptible patients. To define the response to 18 Gy pulmonary irradiation in mice, at the expression level, and to identify pathways which may influence the alveolitis and fibrosis phenotypes expression profiling was completed. Male mice of three strains, A/J (late alveolitis response), C3H/HeJ (C3H, early alveolitis response) and C57BL/6J (B6, fibrosis response) were exposed to thoracic radiation, euthanised when moribund and lung tissue gene expression was assessed with microarrays. treated vs. control in 3 strains
Project description:Thoracic radiation therapy is limited by the development of acute (i.e. pneumonitis) and late (i.e. pulmonary fibrosis) side-effects. The goal of this study is to analyze, at the single cell level, the molecular impact of two radiation treatments : a conventional/clinical (CONV) modality vs. FLASH, a new radiation method that spares healthy tissue from late radiation-induced toxicities (Science Translational Medicine 6: 245ra293, 2014). We analyzed by single cell RNA sequencing (scRNAseq) dissociated lung cells from a non-irradiated control mouse (NI), a mouse 4 days after CONV thoracic irradiation (CONV) and a mouse 4 days after FLASH irradiation (FLASH). We identify transcriptional alterations induced in the distinct lung cell types after irradiation and show that FLASH irradiated lung cells present a reduced pro-inflammatory phenotype as well as a diminished activation of epithelial lung progenitor cells. In line with previous report (Radiother Oncol 124: 365-9, 2017), this study indicates that FLASH radiation therapy limits inflammation and preserves the regenerative capcity of the lung.