Abstract:
:The adaptation of mitochondrial homeostasis to ischemic injury is not fully understood. Here, we studied the role of dynamin-related protein 1 (Drp1) in this process. We found that mitochondrial morphology was altered in the early stage of ischemic injury while mitochondrial dysfunction occurred in the late stage of ischemia. Drp1 appeared to inhibit mitophagy by upregulating mito-Clec16a, which suppressed mito-Parkin recruitment and subsequently impaired the formation of autophagosomes in vascular tissues after ischemic injury. Moreover, ischemia-induced Drp1 activation enhanced apoptosis through inducing mitochondrial translocation of BAX and thereby increasing release of Cytochrome C to activate caspase-3/-9 signalling. Furthermore, Drp1 mediated metabolic disorders and inhibited the levels of mitochondrial glutathione to impair free radical scavenging, leading to further increases in ROS and the exacerbation of mitochondrial dysfunction after ischemic injury. Together, our data suggest a critical role for Drp1 in ischemic injury.
journal_name
Cell Death Disjournal_title
Cell death & diseaseauthors
Duan C,Kuang L,Xiang X,Zhang J,Zhu Y,Wu Y,Yan Q,Liu L,Li Tdoi
10.1038/s41419-020-2461-9subject
Has Abstractpub_date
2020-04-20 00:00:00pages
251issue
4issn
2041-4889pii
10.1038/s41419-020-2461-9journal_volume
11pub_type
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