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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 PLoS+One
2015 ; 10
(3
): e0120162
Nephropedia Template TP
gab.com Text
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English Wikipedia
Lewisy promotes migration of oral cancer cells by glycosylation of epidermal
growth factor receptor
#MMPMID25799278
Lin WL
; Lin YS
; Shi GY
; Chang CF
; Wu HL
PLoS One
2015[]; 10
(3
): e0120162
PMID25799278
show ga
Aberrant glycosylation changes normal cellular functions and represents a
specific hallmark of cancer. Lewisy (Ley) carbohydrate upregulation has been
reported in a variety of cancers, including oral squamous cell carcinoma (OSCC).
A high level of Ley expression is related to poor prognosis of patients with oral
cancer. However, it is unclear how Ley mediates oral cancer progression. In this
study, the role of Ley in OSCC was explored. Our data showed that Ley was
upregulated in HSC-3 and OC-2 OSCC cell lines. Particularly, glycosylation of
epidermal growth factor receptor (EGFR) with Ley was found in OC-2 cells, and
this modification was absent upon inhibition of Ley synthesis. The absence of Ley
glycosylation of EGFR weakened phosphorylation of AKT and ERK in response to
epidermal growth factor (EGF). Additionally, EGF-triggered cell migration was
reduced, but cell proliferation was not affected. Ley modification stabilized
EGFR upon ligand activation. Conversely, absence of Ley glycosylation accelerated
EGFR degradation. In summary, these results indicate that increased expression of
Ley in OSCC cells is able to promote cell migration by modifying EGFR which in
turn stabilizes EGFR expression and downstream signaling. Targeting Ley on EGFR
could have a potential therapeutic effect on oral cancer.