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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Proteomics
2012 ; 12
(21
): 3193-205
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Correlation between TGF-?1 expression and proteomic profiling induced by severe
acute respiratory syndrome coronavirus papain-like protease
#MMPMID22936401
Li SW
; Yang TC
; Wan L
; Lin YJ
; Tsai FJ
; Lai CC
; Lin CW
Proteomics
2012[Nov]; 12
(21
): 3193-205
PMID22936401
show ga
Severe acute respiratory syndrome (SARS) coronavirus (SARS-CoV) papain-like
protease (PLpro), a deubiquitinating enzyme, demonstrates inactivation of
interferon (IFN) regulatory factor 3 and NF-?B, reduction of IFN induction, and
suppression of type I IFN signaling pathway. This study investigates cytokine
expression and proteomic change induced by SARS-CoV PLpro in human promonocyte
cells. PLpro significantly increased TGF-?1 mRNA expression (greater than
fourfold) and protein production (greater than threefold). Proteomic analysis,
Western blot, and quantitative real-time PCR assays indicated PLpro upregulating
TGF-?1-associated genes: HSP27, protein disulfide isomerase A3 precursor, glial
fibrillary acidic protein, vimentin, retinal dehydrogenase 2, and glutathione
transferase omega-1. PLpro-activated ubiquitin proteasome pathway via
upregulation of ubiquitin-conjugating enzyme E2-25k and proteasome subunit alpha
type 5. Proteasome inhibitor MG-132 significantly reduced expression of TGF-?1
and vimentin. PLpro upregulated HSP27, linking with activation of p38 MAPK and
ERK1/2 signaling. Treatment with SB203580 and U0126 reduced PLpro-induced
expression of TGF-?1, vimentin, and type I collagen. Results point to SARS-CoV
PLpro triggering TGF-?1 production via ubiquitin proteasome, p38 MAPK, and
ERK1/2-mediated signaling.