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Open AccessJournal ArticleDOI

Loss of iron triggers PINK1/Parkin‐independent mitophagy

George F. G. Allen, +3 more
- 01 Dec 2013 - 
- Vol. 14, Iss: 12, pp 1127-1135
TLDR
A mitophagy pathway is identified and characterized, the induction of which could prove beneficial as a potential therapy for several neurodegenerative diseases in which mitochondrial clearance is advantageous.
Abstract
In this study, we develop a simple assay to identify mitophagy inducers on the basis of the use of fluorescently tagged mitochondria that undergo a colour change on lysosomal delivery. Using this assay, we identify iron chelators as a family of compounds that generate a strong mitophagy response. Iron chelation-induced mitophagy requires that cells undergo glycolysis, but does not require PINK1 stabilization or Parkin activation, and occurs in primary human fibroblasts as well as those isolated from a Parkinson's patient with Parkin mutations. Thus, we have identified and characterized a mitophagy pathway, the induction of which could prove beneficial as a potential therapy for several neurodegenerative diseases in which mitochondrial clearance is advantageous.

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Citations
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Journal ArticleDOI

Baicalein Activates Parkin-Dependent Mitophagy through NDP52 and OPTN

Po-Yuan Ke, +2 more
- 28 Mar 2022 - 
TL;DR:
Journal ArticleDOI

TNIP1 inhibits selective autophagy via bipartite interaction with LC3/GABARAP and TAX1BP1.

TL;DR: In this paper , the authors demonstrate that the presence of ectopic TNIP1 negatively affects the rate of mitophagy. But they do not provide a molecular rationale for its inhibitory function during mitophagia.
Journal ArticleDOI

High-resolution visualization and assessment of basal and OXPHOS-induced mitophagy in H9c2 cardiomyoblasts.

TL;DR: In this paper , the authors visualized and assessed the level of mitophagy in H9c2 cardiomyoblasts at basal conditions and after OXPHOS induction by galactose adaptation.
Dissertation

Understanding the Role of the Co-Chaperone, Bcl-2 Associated Athanogene 5, in PINK1/parkin Dependent Mitophagy

TL;DR: In this paper, BAG5 was found to negatively affect PINK1 and parkin dependent mitophagy, as measured by a flow cytometry assay directly quantifying lysosomal engulfment of mitochondria.
Journal ArticleDOI

Research progress on iron uptake pathways and mechanisms of foodborne microorganisms and their application in the food sector.

TL;DR: In this paper , a review highlights the unresolved fate of siderophores in the iron uptake system and emphasizes further development of Siderophore-based substitutes for traditional drugs, new antibiotic-resistance drugs, and vaccines in the food and health sectors.
References
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Journal ArticleDOI

Parkin is recruited selectively to impaired mitochondria and promotes their autophagy

TL;DR: It is shown that Parkin is selectively recruited to dysfunctional mitochondria with low membrane potential in mammalian cells and this recruitment promotes autophagy of damaged mitochondria and implicate a failure to eliminate dysfunctional mitochondira in the pathogenesis of Parkinson's disease.
Journal ArticleDOI

Sulforhodamine B colorimetric assay for cytotoxicity screening

TL;DR: The sulforhodamine B (SRB) assay is used for cell density determination, based on the measurement of cellular protein content, which is an efficient and highly cost-effective method for screening.
Journal ArticleDOI

Mitochondria: In Sickness and in Health

TL;DR: This work provides a current view of how mitochondrial functions impinge on health and disease and identifies mitochondrial dysfunction as a key factor in a myriad of diseases, including neurodegenerative and metabolic disorders.
Journal ArticleDOI

Dissection of the Autophagosome Maturation Process by a Novel Reporter Protein, Tandem Fluorescent-Tagged LC3

TL;DR: Using this method, evidence that overexpression of a dominant negative form of Rab7 prevented the fusion of autophagosomes with lysosomes is provided, suggesting that Rab7 is involved in this step.
Journal ArticleDOI

Reactive oxygen species are essential for autophagy and specifically regulate the activity of Atg4

TL;DR: The role of reactive oxygen species (ROS) as signaling molecules in starvation‐induced autophagy is described and a cysteine residue located near the HsAtg4 catalytic site is specified as a critical for this regulation.
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