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2016 ; 7
(8
): 9525-37
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The Notch pathway promotes the cancer stem cell characteristics of CD90+ cells in
hepatocellular carcinoma
#MMPMID26848615
Luo J
; Wang P
; Wang R
; Wang J
; Liu M
; Xiong S
; Li Y
; Cheng B
Oncotarget
2016[Feb]; 7
(8
): 9525-37
PMID26848615
show ga
CD90 has been identified as a marker for liver cancer stem cells (CSCs) that are
responsible for tumorigenic activity, but it is not known how CD90+ cells
contribute to tumor initiation and progression. Our data demonstrated that high
expression of CD90 in Hepatocellular Carcinoma (HCC) tissues correlated with
venous filtration in HCC patients. CD90+ cells isolated from HCC cell lines
exhibited increased tumorigenicity, chemoresistance, tumor invasion and
metastasis. Notch pathway was activated in CD90+ cells and we found that
inhibition of Notch pathway in CD90+ CSCs decreased tumorigenicity, cell
invasion, migration and expression of stem cell related genes. Activation of
Notch pathway in CD90- cells induced self-renewal, invasion and migration.
Furthermore, we observed that cancer stem cell features were facilitated by
stimulating G1-S transition in the cell cycle phase and inhibiting apoptosis
mediated by Notch pathway. Our findings suggested CD90 could be used as a
potential biomarker for HCC CSCs, and that cancer stem cell activity was elevated
through up activated Notch pathway in CD90+ CSCs.