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2015 ; 3
(ä): 35
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Redox interplay between mitochondria and peroxisomes
#MMPMID26075204
Lismont C
; Nordgren M
; Van Veldhoven PP
; Fransen M
Front Cell Dev Biol
2015[]; 3
(ä): 35
PMID26075204
show ga
Reduction-oxidation or "redox" reactions are an integral part of a broad range of
cellular processes such as gene expression, energy metabolism, protein import and
folding, and autophagy. As many of these processes are intimately linked with
cell fate decisions, transient or chronic changes in cellular redox equilibrium
are likely to contribute to the initiation and progression of a plethora of human
diseases. Since a long time, it is known that mitochondria are major players in
redox regulation and signaling. More recently, it has become clear that also
peroxisomes have the capacity to impact redox-linked physiological processes. To
serve this function, peroxisomes cooperate with other organelles, including
mitochondria. This review provides a comprehensive picture of what is currently
known about the redox interplay between mitochondria and peroxisomes in mammals.
We first outline the pro- and antioxidant systems of both organelles and how they
may function as redox signaling nodes. Next, we critically review and discuss
emerging evidence that peroxisomes and mitochondria share an intricate
redox-sensitive relationship and cooperate in cell fate decisions. Key issues
include possible physiological roles, messengers, and mechanisms. We also provide
examples of how data mining of publicly-available datasets from "omics"
technologies can be a powerful means to gain additional insights into potential
redox signaling pathways between peroxisomes and mitochondria. Finally, we
highlight the need for more studies that seek to clarify the mechanisms of how
mitochondria may act as dynamic receivers, integrators, and transmitters of
peroxisome-derived mediators of oxidative stress. The outcome of such studies may
open up exciting new avenues for the community of researchers working on cellular
responses to organelle-derived oxidative stress, a research field in which the
role of peroxisomes is currently highly underestimated and an issue of
discussion.