Parkin-independent mitophagy controls chemotherapeutic response in cancer cells [PDF]
Mitophagy is an evolutionarily conserved process that selectively targets impaired mitochondria for degradation. Defects in mitophagy are often associated with diverse pathologies, including cancer.
Bossowski, Jozef P. +13 more
core +2 more sources
Depletion of RIPK3 or MLKL blocks TNF-driven necroptosis and switches towards a delayed RIPK1 kinase-dependent apoptosis [PDF]
In human cells, the RIPK1-RIPK3-MLKL-PGAM5-Drp1 axis drives tumor necrosis factor (TNF)-induced necroptosis through mitochondrial fission, but whether this pathway is conserved among mammals is not known. To answer this question, we analyzed the presence
Baekelandt, V +13 more
core +3 more sources
PINK1, cancer and neurodegeneration
Cancer and neurodegeneration are two age-related diseases that arise from aberrant signaling in similar cellular systems, those that balance survival and death. Thus, deregulated molecular processes such as DNA damage repair, intracellular energy balance, and key signal transduction systems, including the PI3-kinase/Akt axis can promote tumorigenesis ...
Ciara H, O'Flanagan +2 more
openaire +2 more sources
Mitochondrial dynamics–fusion, fission, movement, and mitophagy–in neurodegenerative diseases [PDF]
Neurons are metabolically active cells with high energy demands at locations distant from the cell body. As a result, these cells are particularly dependent on mitochondrial function, as reflected by the observation that diseases of mitochondrial ...
Alexander +42 more
core +3 more sources
Sam50 Regulates PINK1-Parkin-Mediated Mitophagy by Controlling PINK1 Stability and Mitochondrial Morphology [PDF]
PINK1 and Parkin mediate mitophagy, the cellular process that clears dysfunctional mitochondria. Mitophagy is regulated by mitochondrial dynamics, but the molecules linking these two processes remain poorly understood. Here, we show that Sam50, the core component of the sorting and assembly machinery (SAM), is a critical regulator of mitochondrial ...
Jian, Fenglei +9 more
openaire +3 more sources
Broad activation of the ubiquitin-proteasome system by Parkin is critical for mitophagy [PDF]
Parkin, an E3 ubiquitin ligase implicated in Parkinson's disease, promotes degradation of dysfunctional mitochondria by autophagy. Using proteomic and cellular approaches, we show that upon translocation to mitochondria, Parkin activates the ubiquitin ...
Anh H. Pham +49 more
core +3 more sources
PINK1-dependent phosphorylation of PINK1 and Parkin is essential for mitochondrial quality control [PDF]
AbstractMitochondrial dysfunction has been linked to the pathogenesis of a large number of inherited diseases in humans, including Parkinson’s disease, the second most common neurodegenerative disorder. The Parkinson’s disease genes pink1 and parkin, which encode a mitochondrially targeted protein kinase, and an E3 ubiquitin ligase, respectively ...
Zhuang, Na +3 more
openaire +2 more sources
The mitochondrial intramembrane protease PARL cleaves human Pink1 to regulate Pink1 trafficking [PDF]
Intramembrane proteolysis is a conserved mechanism that regulates a variety of cellular processes ranging from transcription control to signaling. In mitochondria, the inner membrane rhomboid protease PARL has been implicated in the control of life span and apoptosis by a so far uncharacterized mechanism.
Cathrin Meissner +4 more
openaire +3 more sources
Synergistic recruitment of UbcH7~Ub and phosphorylated Ubl domain triggers parkin activation [PDF]
The E3 ligase parkin ubiquitinates outer mitochondrial membrane proteins during oxidative stress and is linked to early-onset Parkinson’s disease. Parkin is autoinhibited but is activated by the kinase PINK1 that phosphorylates ubiquitin leading to ...
Aguirre, Jacob D. +9 more
core +1 more source
PINK1 phosphorylates ubiquitin predominantly in astrocytes [PDF]
AbstractLoss-of-function mutations in PINK1 are causally linked to recessively inherited Parkinson’s disease (PD), with marked loss of dopaminergic neurons in the substantia nigra that are required for normal movement. PINK1 is a nuclear-encoded mitochondrial-targeted kinase that phosphorylates a conserved serine at amino acid 65 (pS65) in ubiquitin as
Sandeep K. Barodia +5 more
openaire +2 more sources

