Abstract Background Sevoflurane postconditioning (SevP) effectively relieves myocardial ischemia/reperfusion (I/R) injury but performs poorly in the diabetic myocardium. Previous studies have revealed important role of increased oxidative stress tissues. Notably, mitochondrial fission mediated by dynamin-related protein 1 (Drp1) is an upstream pathway reactive oxygen production. Whether ineffec...

In a forward screen for genes affecting neurotransmission in Drosophila, we identified mutations in dynamin-related protein (drp1). DRP1 is required for proper cellular distribution of mitochondria, and in mutant neurons, mitochondria are largely absent from synapses, thus providing a genetic tool to assess the role of mitochondria at synapses. Although resting Ca2+ is elevated at drp1 NMJs, ba...

The receptor-interacting protein kinase 3 (RIPK3) plays crucial roles in programmed necrosis and innate inflammatory responses. However, a little is known about the involvement of RIPK3 in NKT cell-mediated immune responses. Here, we demonstrate that RIPK3 plays an essential role in NKT cell function via activation of the mitochondrial phosphatase phosphoglycerate mutase 5 (PGAM5). RIPK3-mediat...

During the process of reprogramming to induced pluripotent stem (iPS) cells, somatic cells switch from oxidative to glycolytic metabolism, a transition associated with profound mitochondrial reorganization. Neither the importance of mitochondrial remodelling for cell reprogramming, nor the molecular mechanisms controlling this process are well understood. Here, we show that an early wave of mit...

The programmed necrosis induced by TNF-α requires the activities of the receptor-interacting serine-threonine kinases RIP1 and RIP3 and their interaction with the mixed lineage kinase domain-like protein MLKL. We report the identification of RIP1- and RIP3-containing protein complexes that form specifically in response to necrosis induction. One component of these complexes is the mitochondrial...

The mitochondrial fusion factors mitofusins 1 and 2 (Mfn1 and Mfn2) and the fission factor dynamin-related protein 1 (Drp1) were found to be highly expressed in the pubertal and adult rat testis by Northern blot analysis. Immunohistochemistry using specific antisera to Mfn2 and Drp1 revealed a pronounced expression of the fusion and fission factors in the round and elongating spermatids in the ...

< a d d a r t t y p e = " r e l " d o i = " 1 0. 1 0 8 3 / j c b. 2 0 1 5 0 8 0 9 9 " > Otera et al.< / a d d a r t > reveal that the mito-chondrial fi ssion factor Drp1 and its receptors MiD49 and MiD51 promote apoptosis by remodeling mitochondrial cristae. Early in apoptosis, mitochon-drial cristae are remodeled so that cytochrome c enters the space between the inner and outer mito-chondrial ...

Mitochondria undergo dynamic fission and fusion events, and disruptions in this balance can lead to cellular dysfunction or death. New work by Henley and colleagues identifies a key role for the SUMO protease SENP3 and its target Drp1, a key mediator of mitochondrial fission, in ischaemia. The term mitochondrion is derived from the Greek mitos (thread) and khondrion (small grain), emphasizing t...

In the present study, the activation of autophagy and its interaction with the mitochondrial fission machinery was investigated in an experimental model of Parkinson's disease. The addition of 50µM 6-hydroxydopamine (6-OHDA) to the dopaminergic cell line SH-SY5Y profoundly stimulated formation of autophagosomes within 12h. Under these conditions, mitochondrial fission was also activated in a su...