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2017 ; 8
(44
): 76666-76685
Nephropedia Template TP
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English Wikipedia
Adenovirus-mediated decorin expression induces cancer cell death through
activation of p53 and mitochondrial apoptosis
#MMPMID29100340
Yoon AR
; Hong J
; Yun CO
Oncotarget
2017[Sep]; 8
(44
): 76666-76685
PMID29100340
show ga
Decorin (DCN) is a small leucine-rich proteoglycan that plays an important role
in the regulation of apoptosis, proliferation, intercellular contact, and cell
migration. Here we have investigated the detailed mechanism of apoptotic cell
death induced by DCN expression. A marked increase in cytotoxicity was observed
for both DCN-expressing replication-incompetent (dE1/DCN) and -competent (dB/DCN)
adenoviruses (Ads) compared to the corresponding control Ads. FACS and TUNEL
assays revealed that the expression of DCN induced apoptotic cell death.
Specifically, the expression and stability of p53 were increased by DCN. In
addition, western blot data showed that DCN expression activated mitochondrial
apoptosis by increasing the expression level of p53. Similarly, DCN-expressing
oncolytic Ads induced a greater antitumor effect in a murine xenograft model
compared with control Ads. Tissue staining and western blot data from in vivo
experiments demonstrated significantly higher levels of apoptosis in tumor
tissues from mice treated with DCN-expressing Ads compared to those treated with
control Ads. Collectively, these data support that cell killing effect is
enhanced with Ad-mediated DCN expression via the induction of p53-mediated
mitochondrial apoptosis, which could be a valuable benefit for antitumor
efficacy.