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2017 ; 8
(6
): e2885
Nephropedia Template TP
gab.com Text
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English Wikipedia
Connective tissue growth factor promotes temozolomide resistance in glioblastoma
through TGF-?1-dependent activation of Smad/ERK signaling
#MMPMID28617438
Zeng H
; Yang Z
; Xu N
; Liu B
; Fu Z
; Lian C
; Guo H
Cell Death Dis
2017[Jun]; 8
(6
): e2885
PMID28617438
show ga
Limited benefits and clinical utility of temozolomide (TMZ) for glioblastoma (GB)
are frequently compromised by the development of acquired drug resistance.
Overcoming TMZ resistance and uncovering the underlying mechanisms are challenges
faced during GB chemotherapy. In this study, we reported that connective tissue
growth factor (CTGF) was associated with GB chemoresistance and significantly
upregulated in TMZ-treated GB cells. CTGF knockdown promoted TMZ-induced cell
apoptosis and enhanced chemosensitivity, whereas its overexpression markedly
conferred TMZ resistance in vitro and in vivo. Moreover, CTGF promoted TMZ
resistance through stem-like properties acquisition and CD44 interference
reversed the CTGF-induced TMZ resistance. Mechanistically, further investigation
revealed that the TMZ-induced CTGF upregulation was tissue growth factor (TGF-?)
dependent, and regulated by TGF-?1 activation through Smad and ERK1/2 signaling.
Together, our results suggest a pivotal role of CTGF-mediated TMZ resistance
through TGF-?1-dependent activation of Smad/ERK signaling pathways. These data
provide us insights for identifying potential targets that are beneficial for
overcoming TMZ resistance in GB.