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2017 ; 108
(7
): 1285-1292
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Clinicopathological significance of the microRNA-146a/WASP-family
verprolin-homologous protein-2 axis in gastric cancer
#MMPMID28387985
Yao Q
; Tu C
; Lu D
; Zou Y
; Liu H
; Zhang S
Cancer Sci
2017[Jul]; 108
(7
): 1285-1292
PMID28387985
show ga
Gastric cancer (GC) is one of the most common malignancies, and cancer invasion
and metastasis are the leading causes of cancer-induced death in GC patients.
WASP-family verprolin-homologous protein-2 (WASF2), with a role controlling actin
polymerization which is critical in the formation of membrane protrusions
involved in cell migration and invasion, has been reported to possess
cancer-promoting effects in several cancers. However, data of WASF2's role in GC
are relatively few and even contradictory. In this study, we analyzed WASF2
expression in GC tissues and their corresponding adjacent normal tissues. We
found that WASF2 was upregulated in GC tissues and high level of WASF2 was
associated with lymph node metastasis of GC. Through gain- and loss-of-function
studies, WASF2 was shown to significantly increase GC cells migration and
invasion, but had no effect on proliferation in vitro. Importantly, WASF2 was
also found to enhance GC metastasis in vivo. Our previous research suggested that
WASF2 was a direct target of microRNA-146a (miR-146a). Furthermore, we analyzed
miR-146a's level in GC tissues and their corresponding adjacent normal tissues.
We found that miR-146a was downregulated in GC tissues and low miR-146a level was
associated with advanced TNM stage and lymph node metastasis. The level of WASF2
in GC tissues was negatively correlated with miR-146a expression and had inverse
clinicopathologic features. The newly identified miR-146a/WASF2 axis may provide
a novel therapeutic target for GC.