| First Author | Yu C | Year | 2016 |
| Journal | Cell Death Differ | Volume | 23 |
| Issue | 11 | Pages | 1873-1885 |
| PubMed ID | 27662363 | Mgi Jnum | J:380306 |
| Mgi Id | MGI:6140838 | Doi | 10.1038/cdd.2016.99 |
| Citation | Yu C, et al. (2016) FAF1 mediates regulated necrosis through PARP1 activation upon oxidative stress leading to dopaminergic neurodegeneration. Cell Death Differ 23(11):1873-1885 |
| abstractText | Cumulative damage caused by oxidative stress results in diverse pathological conditions. Therefore, elucidating the molecular mechanisms underlying cell death following oxidative stress is important. Here, we describe a novel role for Fas-associated factor 1 (FAF1) as a crucial regulator of necrotic cell death elicited by hydrogen peroxide. Upon oxidative insult, FAF1 translocated from the cytoplasm to the nucleus and promoted the catalytic activation of poly(ADP-ribose) polymerase 1 (PARP1) through physical interaction. Moreover, FAF1 depletion prevented PARP1-linked downstream events involved in the triggering of cell death, including energetic collapse, mitochondrial depolarization and nuclear translocation of apoptosis-inducing factor (AIF), implying that FAF1 has a key role in PARP1-dependent necrosis in response to oxidative stress. We further investigated whether FAF1 might contribute to the pathogenesis of Parkinson''s disease through excessive PARP1 activation. Indeed, the overexpression of FAF1 using a recombinant adeno-associated virus system in the mouse ventral midbrain promoted PARP1 activation and dopaminergic neurodegeneration in a 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) mouse model of Parkinson''s disease. Collectively, our data demonstrate the presence of an FAF1-PARP1 axis that is involved in oxidative stress-induced necrosis and in the pathology of Parkinson''s disease. |
