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Full-Text Articles in Medicine and Health Sciences
Dysregulation Of Ryr Calcium Channel Causes The Onset Of Mitochondrial Retrograde Signaling, Anindya Roy Chowdhury, Satish Srinivasan, György Csordás, György Hajnóczky, Narayan G Avadhani
Dysregulation Of Ryr Calcium Channel Causes The Onset Of Mitochondrial Retrograde Signaling, Anindya Roy Chowdhury, Satish Srinivasan, György Csordás, György Hajnóczky, Narayan G Avadhani
Department of Pathology, Anatomy, and Cell Biology Faculty Papers
This study shows that multiple modes of mitochondrial stress generated by partial mtDNA depletion or cytochrome c oxidase disruption cause ryanodine receptor channel (RyR) dysregulation, which instigates the release of Ca2+ in the cytoplasm of C2C12 myoblasts and HCT116 carcinoma cells. We also observed a reciprocal downregulation of IP3R channel activity and reduced mitochondrial uptake of Ca2+. Ryanodine, an RyR antagonist, abrogated the mitochondrial stress-mediated increase in [Ca2+]c and the entire downstream signaling cascades of mitochondrial retrograde signaling. Interestingly, ryanodine also inhibited mitochondrial stress-induced invasive behavior in mtDNA-depleted C2C12 cells and HCT116 carcinoma cells. In addition, co-immunoprecipitation shows reduced FKBP12 …
Insulin-Like Growth Factor 2 Mrna-Binding Protein 3 Modulates Aggressiveness Of Ewing Sarcoma By Regulating The Cd164-Cxcr4 Axis, Caterina Mancarella, Giulia Caldoni, Irene Ribolsi, Alessandro Parra, Maria Cristina Manara, Arthur M Mercurio, Andrea Morrione, Katia Scotlandi
Insulin-Like Growth Factor 2 Mrna-Binding Protein 3 Modulates Aggressiveness Of Ewing Sarcoma By Regulating The Cd164-Cxcr4 Axis, Caterina Mancarella, Giulia Caldoni, Irene Ribolsi, Alessandro Parra, Maria Cristina Manara, Arthur M Mercurio, Andrea Morrione, Katia Scotlandi
Department of Pathology, Anatomy, and Cell Biology Faculty Papers
Ewing sarcoma (EWS) is the second most common bone and soft tissue-associated malignancy in children and young adults. It is driven by the fusion oncogene EWS/FLI1 and characterized by rapid growth and early metastasis. We have previously discovered that the mRNA binding protein IGF2BP3 constitutes an important biomarker for EWS as high expression of IGF2BP3 in primary tumors predicts poor prognosis of EWS patients. We additionally demonstrated that IGF2BP3 enhances anchorage-independent growth and migration of EWS cells suggesting that IGF2BP3 might work as molecular driver and predictor of EWS progression. The aim of this study was to further define the …