期刊
CELL DEATH DISCOVERY
卷 4, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41420-018-0028-7
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资金
- Project of National Relevance (PRIN-2016) - Italian Ministry of Research and Instruction (MIUR)
- Italian Ministry of Health
- funds for basic research (FARB 2015-2016) from University of Salerno
- European Union IDEAS Programme
- European Research Council Starting Grant menTORingTregs [310496]
The modern understanding of the G protein-coupled receptor kinase 2 has grown towards the definition of a stress protein, for its ability to rapidly compartmentalize within the cell in response to acute stimulation. Also, mitochondria can be regulated by GRK2 localization. We show that Ionizing Radiation (IR) exposure acutely damages mitochondria regarding mass, morphology, and respiration, with recovery in a framework of hours. This phenomenon is actively regulated by GRK2, whose overexpression results to be protective, and reciprocally, deletion accelerates degenerative processes. The regulatory effects of the kinase involve a new interactome that includes binding HSP90 and binding and phosphorylation of the key molecules involved in the process of mitochondrial fusion and recovery: MFN-1 and 2.
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