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2020 ; 21
(9
): ä Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
SARS Unique Domain (SUD) of Severe Acute Respiratory Syndrome Coronavirus Induces
NLRP3 Inflammasome-Dependent CXCL10-Mediated Pulmonary Inflammation
#MMPMID32365944
Chang YS
; Ko BH
; Ju JC
; Chang HH
; Huang SH
; Lin CW
Int J Mol Sci
2020[Apr]; 21
(9
): ä PMID32365944
show ga
Severe acute respiratory syndrome-associated coronavirus (SARS-CoV) initiates the
cytokine/chemokine storm-mediated lung injury. The SARS-CoV unique domain (SUD)
with three macrodomains (N, M, and C), showing the G-quadruplex binding activity,
was examined the possible role in SARS pathogenesis in this study. The chemokine
profile analysis indicated that SARS-CoV SUD significantly up-regulated the
expression of CXCL10, CCL5 and interleukin (IL)-1? in human lung epithelial cells
and in the lung tissues of the mice intratracheally instilled with the
recombinant plasmids. Among the SUD subdomains, SUD-MC substantially activated
AP-1-mediated CXCL10 expression in vitro. In the wild type mice, SARS-CoV SUD-MC
triggered the pulmonary infiltration of macrophages and monocytes, inducing
CXCL10-mediated inflammatory responses and severe diffuse alveolar damage
symptoms. Moreover, SUD-MC actuated NOD-, LRR- and pyrin domain-containing
protein 3 (NLRP3) inflammasome-dependent pulmonary inflammation, as confirmed by
the NLRP3 inflammasome inhibitor and the NLRP3(-/-) mouse model. This study
demonstrated that SARS-CoV SUD modulated NLRP3 inflammasome-dependent
CXCL10-mediated pulmonary inflammation, providing the potential therapeutic
targets for developing the antiviral agents.