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2016 ; 10
(ä): 204-15
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Lactoferrin Suppresses Neutrophil Extracellular Traps Release in Inflammation
#MMPMID27453322
Okubo K
; Kamiya M
; Urano Y
; Nishi H
; Herter JM
; Mayadas T
; Hirohama D
; Suzuki K
; Kawakami H
; Tanaka M
; Kurosawa M
; Kagaya S
; Hishikawa K
; Nangaku M
; Fujita T
; Hayashi M
; Hirahashi J
EBioMedicine
2016[Aug]; 10
(ä): 204-15
PMID27453322
show ga
Neutrophils are central players in the innate immune system. They generate
neutrophil extracellular traps (NETs), which protect against invading pathogens
but are also associated with the development of autoimmune and/or inflammatory
diseases and thrombosis. Here, we report that lactoferrin, one of the components
of NETs, translocated from the cytoplasm to the plasma membrane and markedly
suppressed NETs release. Furthermore, exogenous lactoferrin shrunk the chromatin
fibers found in released NETs, without affecting the generation of oxygen
radicals, but this failed after chemical removal of the positive charge of
lactoferrin, suggesting that charge-charge interactions between lactoferrin and
NETs were required for this function. In a model of immune complex-induced NET
formation in vivo, intravenous lactoferrin injection markedly reduced the extent
of NET formation. These observations suggest that lactoferrin serves as an
intrinsic inhibitor of NETs release into the circulation. Thus, lactoferrin may
represent a therapeutic lead for controlling NETs release in autoimmune and/or
inflammatory diseases.