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2016 ; 7
(16
): 22031-49
Nephropedia Template TP
gab.com Text
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English Wikipedia
In-depth analysis of secretome and N-glycosecretome of human hepatocellular
carcinoma metastatic cell lines shed light on metastasis correlated proteins
#MMPMID27014972
Li X
; Jiang J
; Zhao X
; Zhao Y
; Cao Q
; Zhao Q
; Han H
; Wang J
; Yu Z
; Peng B
; Ying W
; Qian X
Oncotarget
2016[Apr]; 7
(16
): 22031-49
PMID27014972
show ga
Cancer cell metastasis is a major cause of cancer fatality. But the underlying
molecular mechanisms remain incompletely understood, which results in the lack of
efficient diagnosis, therapy and prevention approaches. Here, we report a
systematic study on the secretory proteins (secretome) and secretory
N-glycoproteins (N-glycosecretome) of four human hepatocellular carcinoma (HCC)
cell lines with different metastatic potential, to explore the molecular
mechanism of metastasis and supply the clues for effective measurement of
diagnosis and therapy. Totally, 6242 unique gene products (GPs) and 1637 unique
N-glycosites from 635 GPs were confidently identified. About 4000 GPs on average
were quantified in each of the cell lines, 1156 of which show differential
expression (p<0.05). Ninety-nine percentage of the significantly altered proteins
were secretory proteins and proteins correlated to cell movement were
significantly activated with the increasing of metastatic potential of the cell
lines. Twenty-three GPs increased both in the secretome and the N-glycosecretome
were chosen as candidates and verified by western blot analysis, and 10 of them
were chosen for immunohistochemistry (IHC) analysis. The cumulative survival
rates of the patients with candidate (FAT1, DKK3) suggested that these proteins
might be used as biomarkers for HCC diagnosis. In addition, a comparative
analysis with the published core human plasma database (1754 GPs) revealed that
there were 182 proteins not presented in the human plasma database but identified
by our studies, some of which were selected and verified successfully by western
blotting in human plasma.