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. Author manuscript; available in PMC: 2017 May 15.
Published in final edited form as: Toxicol Appl Pharmacol. 2016 Jan 6;299:58–69. doi: 10.1016/j.taap.2016.01.002

Table 1.

Enzymatic degradation of carbonaceous nanomaterials with sp2 hybridization by in vivo relevant oxidative systems.

Biological system Oxidative equivalents Carbonaceous
nanomaterials
References

Enzymes + H2O2
Myeloperoxidase

(MPO)
Compound I,
Compound II,
c-SWCNTs
PEG-SWCNTs
Kagan et al., 2010;
Vlasova et al., 2012;
HOCl, HOBr PEG-SWCNTs Bhattacharya et al.,
2014
Nitrogen-doped CNT
cups
Zhao et al., 2014
Graphene oxide Kurapati et al., 2015
Carbon nanohorns Zhang et al., 2015
Eosinophil peroxidase

(EPO)
Compound I,
Compound II,
c-SWCNTs Andón et al., 2013
HOBr; (low HOCl)
Lactoperoxidase

(LPO)
Compound I, c-SWCNTs, PEG-SWCNTs
ox-SWCNTs and
Vlasova et al., 2011, 2012
HOBr, HOSCN ox-SWCNTs+lung
surfactant
Bhattacharya et al., 2015
Xanthine oxidase + NO
(without H2O2) ONOO c-SWCNTs Kagan et al., 2014
Xanthine oxidase ox-MWCNTs, f-MWCNTs
Hemoglobin O2•− + H2O2 → HO• Sureshbabu et al., 2015
Tyr-O, HOO, HO c-SWCNTs, PEG-SWCNTs
Cytochrome c Tyr-O, HO Graphene oxide Vlasova et al., 2011, 2012
Phagolysosomal simulant
fluid + H2O2
n.d. ox-SWCNTs, ox-
MWCNTs
the present paper
Russier et al., 2010
Murine bronchoalveolar
lavage fluid + H2O2 +
NaSCN
LPO, MPO, HOSCN ox-SWCNTs Bhattacharya et. al., 2015
Neutrophil extracellular
traps + H2O2 + NaBr
MPO, HOCl, HOBr ox-SWCNTs Farrera et al., 2014
Human neutrophils
+ fMLP and cytochalasin B
+ fMLP and cytochalasin B
+ serum opsonized
zymosan
MPO, HOCl c-SWCNTs+IgG
PEG-SWCNTs
HSA-SWCNTs
Kagan et al., 2010;
Bhattacharya et al., 2014
Macrophages: ROS, ONOO- Lu et al., 2014
Human monocyte-derived c-SWCNTs+IgG
THP-1 c-SWCNTs
THP-1 MWCNTs-NH2 Kagan et al., 2010
RAW 264.7, THP-1 Carbon nanohorns Kagan et al., 2014
Elgrabli et al., 2015
Murine eosnophils
+ cytochalasin B and PAF
EPO, HOBr ox-SWCNTs Zhang et al., 2015
Myeloid-derived
suppressor cells
MPO, HOCl Nitrogen-doped CNT
cups
Andón et al., 2013
Primary microglia n.d. (ROS, RNS) ox-MWCNTs, MWCNT- Zhao et al., 2014
Experimental animals NH2,
-Pharyngeal aspiration ox-MWCNT-NH2 Bussy et al., 2016
w/t and MPO k/o mice
-Pharyngeal aspiration
MPO, HOCl c-SWCNTs
w/t and NADPH-oxidase-
deficient mice
ONOO- c-SWCNTs Shvedova et al, 2012
-Stereotactic
administration
Kagan et al, 2014
C57BL/6 mice (ROS) MWCNT-NH3+
Nunes et al., 2012

ROS – reactive oxygen species; RNS – reactive nitrogen species; n.d. – not determined.