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2016 ; 2016
(ä): 5874127
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CCL21 Facilitates Chemoresistance and Cancer Stem Cell-Like Properties of
Colorectal Cancer Cells through AKT/GSK-3?/Snail Signals
#MMPMID27057280
Lu LL
; Chen XH
; Zhang G
; Liu ZC
; Wu N
; Wang H
; Qi YF
; Wang HS
; Cai SH
; Du J
Oxid Med Cell Longev
2016[]; 2016
(ä): 5874127
PMID27057280
show ga
Some evidence indicated that chemoresistance associates with the acquisition of
cancer stem-like properties. Recent studies suggested that chemokines can promote
the chemoresistance and stem cell properties in various cancer cells, while the
underling mechanism is still not completely illustrated. In our study, we found
that CCL21 can upregulate the expression of P-glycoprotein (P-gp) and stem cell
property markers such as Bmi-1, Nanog, and OCT-4 in colorectal cancer (CRC)
HCT116 cells and then improve the cell survival rate and mammosphere formation.
Our results suggested that Snail was crucial for CCL21-mediated chemoresistance
and cancer stem cell property in CRC cells. Further, we observed that CCL21
treatment increased the protein but not mRNA levels of Snail, which suggested
that CCL21 upregulates Snail via posttranscriptional ways. The downstream signals
AKT/GSK-3? mediated CCL21 induced the upregulation of Snail due to the fact that
CCL21 treatment can obviously phosphorylate both AKT and GSK-3?. The inhibitor of
PI3K/Akt, LY294002 significantly abolished CCL21 induced chemoresistance and
mammosphere formation of HCT116 cells. Collectively, our results in the present
study revealed that CCL21 can facilitate chemoresistance and stem cell property
of CRC cells via the upregulation of P-gp, Bmi-1, Nanog, and OCT-4 through
AKT/GSK-3?/Snail signals, which suggested a potential therapeutic approach to CRC
patients.
|ATP Binding Cassette Transporter, Subfamily B, Member 1/metabolism
[MESH]