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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 Am+J+Transl+Res
2016 ; 8
(5
): 1971-84
Nephropedia Template TP
gab.com Text
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Twit Text #
English Wikipedia
HMGB1 exacerbates bronchiolitis obliterans syndrome via RAGE/NF-?B/HPSE signaling
to enhance latent TGF-? release from ECM
#MMPMID27347307
He L
; Sun F
; Wang Y
; Zhu J
; Fang J
; Zhang S
; Yu Q
; Gong Q
; Ren B
; Xiang X
; Chen Z
; Ning Q
; Hu J
; Yang P
; Wang CY
Am J Transl Res
2016[]; 8
(5
): 1971-84
PMID27347307
show ga
Bronchiolitis obliterans syndrome (BOS), characterized by progressive airflow
obstruction, is the main barrier to long-term graft survival after lung
transplantation. Despite extensive studies, the mechanisms underlying BOS remain
poorly understood, and targeted interventions have not yet been fully developed.
In the present study, we employed a mouse model of tracheal transplantation and
demonstrated that blockade of HMGB1 alone or combined with heparanase (HPSE)
attenuates the development of BOS. It was noted that HMGB1 was first passively
released from necrotic/damaged cells as a result of early unavoidable allograft
injuries, leading to macrophage infiltration along with HMGB1 active secretion.
Mechanistic studies revealed that extracellular HMGB1 acted through its receptor,
RAGE, to activate NF-?B, which then bound to the HPSE promoter to transcribe its
expression. The enhanced HPSE next released HS-bonded latent TGF-? from
myofibroblast ECM by cleaving HS chains to promote the initiation and progression
of BOS. Together, our data suggest that HMGB1 and HPSE could be viable targets
for prevention and intervention of fibrotic diseases such BOS after lung
transplantation.