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2015 ; 11
(17
): 2087-97
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
NADPH Oxidase-Dependent NLRP3 Inflammasome Activation and its Important Role in
Lung Fibrosis by Multiwalled Carbon Nanotubes
#MMPMID25581126
Sun B
; Wang X
; Ji Z
; Wang M
; Liao YP
; Chang CH
; Li R
; Zhang H
; Nel AE
; Xia T
Small
2015[May]; 11
(17
): 2087-97
PMID25581126
show ga
The purpose of this paper is to elucidate the key role of NADPH oxidase in NLRP3
inflammasome activation and generation of pulmonary fibrosis by multi-walled
carbon nanotubes (MWCNTs). Although it is known that oxidative stress plays a
role in pulmonary fibrosis by single-walled CNTs, the role of specific sources of
reactive oxygen species, including NADPH oxidase, in inflammasome activation
remains to be clarified. In this study, three long aspect ratio (LAR) materials
(MWCNTs, single-walled carbon nanotubes, and silver nanowires) are used to
compare with spherical carbon black and silver nanoparticles for their ability to
trigger oxygen burst activity and NLRP3 assembly. All LAR materials but not
spherical nanoparticles induce robust NADPH oxidase activation and respiratory
burst activity in THP-1 cells, which are blunted in p22(phox) -deficient cells.
The NADPH oxidase is directly involved in lysosomal damage by LAR materials, as
demonstrated by decreased cathepsin B release and IL-1? production in p22(phox)
-deficient cells. Reduced respiratory burst activity and inflammasome activation
are also observed in bone marrow-derived macrophages from p47(phox) -deficient
mice. Moreover, p47(phox) -deficient mice have reduced IL-1? production and lung
collagen deposition in response to MWCNTs. Lung fibrosis is also suppressed by
N-acetyl-cysteine in wild-type animals exposed to MWCNTs.
|Animals
[MESH]
|Carrier Proteins/*metabolism
[MESH]
|Cathepsin B/metabolism
[MESH]
|Cell Line
[MESH]
|Cytochrome b Group/metabolism
[MESH]
|Humans
[MESH]
|Inflammasomes/metabolism
[MESH]
|Interleukin-1beta/metabolism
[MESH]
|Lung/pathology
[MESH]
|Lysosomes/metabolism
[MESH]
|Macrophages/metabolism
[MESH]
|Male
[MESH]
|Metal Nanoparticles/chemistry
[MESH]
|Mice
[MESH]
|Mice, Inbred C57BL
[MESH]
|NADH, NADPH Oxidoreductases/*metabolism
[MESH]
|NADPH Oxidase 1
[MESH]
|NADPH Oxidases/*metabolism
[MESH]
|NLR Family, Pyrin Domain-Containing 3 Protein
[MESH]