Abstract
Iron sulfur proteins (Fe-S) are ancient structures present in archaebacteria and are involved in central metabolic functions in these ancient organisms (Iwasaki, Archaea 2010:1, 2010). From an evolutionary perspective, Fe-S clusters originated early on during protein evolution; with the aid of an inducible and robust antioxidant defense system, organisms have evolved to tackle oxygen toxicity and metabolism. Since Fe-S cluster proteins are known to be responsible for a variety of physiological functions in mammals, destabilization of the clusters by oxidative and nitrosative stress can lead to consequences such as TCA cycle downregulation, mitochondrial dysfunction and also oxidative stress-induced carcinogenesis. Indeed, mutations of some Fe-S proteins have been correlated with cancer. Particularly, cancer pathophysiology has been linked to oxidative stress. Also, defective Fe-S cluster assembly due to genetic abnormalities is the underlying cause for several other diseases, which are discussed in detail in Roland Lill and Tracey Rouault’s works (Sheftel et al. Trends Endocrinol Metab 21 (5):302–314, 2010; Rouault and Tong, Trends Genet 24 (8):398–407, 2008; Ye and Rouault, Biochemistry 49 (24):4945–4956, 2010; Lill and Mühlenhoff, Annu Rev Biochem 77:669–700, 2008). Lack of mature Fe-S clusters in respiratory complexes leads to low energy (fatigue) and metabolic dysfunction because lipoic acid synthesis and many metabolic pathways are regulated by Fe-S proteins. Also, Fe-S cluster depletion in nuclear Fe-S proteins which are involved in DNA synthesis, maintenance and repair can potentially spark carcinogenesis. Moreover, since Fe-S cluster proteins are powerful ‘sensors’ of oxidative stress, they are important signalling agents which can alert cells to oxidative stress damage, and hence, were termed as “sentinels” (Py et al. Curr Opin Microbiol 14 (2):218–223, 2011). Reaction of Fe-S clusters with reactive oxygen and nitrogen species is an inevitable consequence of oxygen-dependent respiration; hence, cells possess machinery to synthesize and repair damaged Fe-S clusters, to restore protein functionality and cellular viability. When the oxidative damage overwhelms the antioxidant defense system and impairs Fe-S repair/reconstitution, there can be dire consequences, including cancer.
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Abbreviations
- ATP:
-
Adenosine triphosphate
- BOLA1:
-
BolA Family Member 1
- CDGSH:
-
CDGSH iron sulfur domain 1 (MitoNEET)
- CIA:
-
Cytosolic iron-sulfur protein assembly
- DCA:
-
Dichloroacetate
- DNIC:
-
Dinitrosyl-Iron Complex
- DPYD:
-
Dihydropyrimidine Dehydrogenase
- ELP3:
-
Elongator complex protein 3
- EPR:
-
Electron paramagnetic resonance
- ETC:
-
Electron transport chain
- ETFDH:
-
Electron Transfer Flavoprotein Dehydrogenase
- FADH:
-
Flavin adenine dinucleotide, reduced
- FANCJ:
-
Fanconi anemia group J
- FMN:
-
Flavin mononucleotide
- FXN:
-
Frataxin
- GLRX5:
-
Glutaredoxin 5
- GPAT:
-
Glycerol-3-phosphate acyltransferase
- IRE-BP:
-
Iron-responsive element-binding protein
- IRP-1:
-
Iron regulatory protein
- ISCU:
-
Iron-Sulfur Cluster Assembly Enzyme
- MOCS1:
-
Molybdenum Cofactor Synthesis 1
- MUTYH:
-
mutY DNA glycosylase
- NADH:
-
Nicotinamide adenine dinucleotide
- NAF-1:
-
Nuclear Assembly Factor 1
- NDUFS:
-
NADH:Ubiquinone Oxidoreductase Core Subunit S
- NFS1:
-
Cysteine desulfurase
- NMR:
-
Nuclear Magnetic Resonance
- NTHL1:
-
Nth Like DNA Glycosylase 1
- PEITC:
-
β-Phenethyl isothiocyanate
- RNS:
-
Reactive Nitrogen Species
- ROS/RNS:
-
Reactive Oxygen species
- SDHB:
-
Succinate dehydrogenase [ubiquinone] iron-sulfur subunit, mitochondrial
- TCA:
-
Tricarboxylic acid cycle
- VDAC:
-
Voltage-dependent anion channels
- XDH:
-
Xanthine dehydrogenase
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James, J., Gideon, D.A.M., Roy, D., Mandal, A. (2022). Iron Sulfur Clusters and ROS in Cancer. In: Chakraborti, S., Ray, B.K., Roychoudhury, S. (eds) Handbook of Oxidative Stress in Cancer: Mechanistic Aspects. Springer, Singapore. https://doi.org/10.1007/978-981-15-9411-3_24
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