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2017 ; 8
(ä): 206
Nephropedia Template TP
Zhao D
; Wang Y
; Du C
; Shan S
; Zhang Y
; Du Z
; Han D
Front Pharmacol
2017[]; 8
(ä): 206
PMID28469575
show ga
Hypertrophic scar (HPS) presents as excessive extracellular matrix deposition and
abnormal function of fibroblasts. However, there is no single satisfactory method
to prevent HPS formation so far. Here, we found that honokiol (HKL), a natural
compound isolated from Magnolia tree, had an inhibitory effect on HPS both in
vitro and in vivo. Firstly, HKL could dose-dependently down-regulate the mRNA and
protein levels of type I collagen, type III collagen, and ?-smooth muscle actin
(?-SMA) in hypertrophic scar-derived fibroblasts (HSFs). Secondly, HKL suppressed
the proliferation, migration abilities of HSFs and inhibited HSFs activation to
myofibroblasts, but had no effect on cell apoptosis. Besides, the in vivo rabbit
ear scar model further affirmed the inhibitory effects of HKL on collagen
deposition, proliferating cell nuclear antigen and ?-SMA. Finally, Western blot
results showed that HKL reduced the phosphorylation status of Smad2/3, as well as
affected the protein levels of matrix metalloproteinases (MMPs) and tissue
inhibitor of metalloproteinase1. Taken together, this study demonstrated that HKL
alleviated HPS by suppressing fibrosis-related molecules and inhibiting HSFs
proliferation, migration as well as activation to myofibroblasts via
Smad-dependent pathway. Therefore, HKL could be used as a potential agent for
treating HPS and other fibrotic diseases.