Down-regulation of WAVE2, WASP family verprolin-homologous protein 2, in gastric cancer indicates lymph node metastasis and cell migration.

Abstract:

BACKGROUND:WAVE2 plays a crucial role in actin polymerisation and cell migration. We aimed to investigate the expression and cellular functions of WAVE2 in human gastric cancer (GC). MATERIALS AND METHODS:The level of WAVE2 was determined using quantitative PCR (Q-PCR) in a cohort of human gastric tissues. Expression of WAVE2, ARP2, NWASP, ROCK1 and ROCK2 was examined using RT-PCR in paired tissues. WAVE2 and ARP2 protein co-expression was examined. Anti-WAVE2 transgene ribozymes were constructed and transiently transfected into human GC cells. RESULTS:Down-regulation of WAVE2 expression in GC was significantly correlated with lymph node metastasis. WAVE2 was positively correlated with E-cadherin and negatively with TWIST. Immunohistochemically, WAVE2 and ARP2 were not co-expressed in serial mirror sections. In vitro, WAVE2 knockdown was shown to increase cell motility, whilst ROCK inhibitor treatment reduced this effect in HGC27 cells. CONCLUSION:WAVE2 is down-regulated in GC and loses its metastatic role in GC. Knockdown of WAVE2 could increase metastatic potential by promoting the growth, invasiveness, motility, adhesiveness and suppressing EMT (epithelial-mesenchymal transition) of GC cells.

journal_name

Anticancer Res

journal_title

Anticancer research

authors

Jia S,Jia Y,Weeks HP,Ruge F,Feng X,Ma R,Ji J,Ren J,Jiang WG

subject

Has Abstract

pub_date

2014-05-01 00:00:00

pages

2185-94

issue

5

eissn

0250-7005

issn

1791-7530

pii

34/5/2185

journal_volume

34

pub_type

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