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2018 ; 15
(6
): 8253-8260
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TRIM59 induces epithelial-to-mesenchymal transition and promotes migration and
invasion by PI3K/AKT signaling pathway in medulloblastoma
#MMPMID29805559
Gao R
; Lv G
; Zhang C
; Wang X
; Chen L
Oncol Lett
2018[Jun]; 15
(6
): 8253-8260
PMID29805559
show ga
Medulloblastoma is the most common malignant brain tumor in children. Despite
remarkable advances over previous decades, the long-term survival of patients
with medulloblastoma remains poor due to the frequent metastatic nature of this
malignancy. The aim of the present study was to examine the role of tripartite
motif containing 59 (TRIM59) in cell metastasis in medulloblastoma. It was
initially demonstrated that TRIM59 expression was significantly increased in
clinical medulloblastoma tissues compared with adjacent non-cancerous tissues and
differentially expressed in a series of medulloblastoma cell lines. The knockdown
of TRIM59 in D283 cells resulted in epithelial-to-mesenchymal transition (EMT),
and decreased cell migratory and invasive capacities. By contrast, the
overexpression of TRIM59 in Daoy cells was able to inhibit the EMT process and
increase migratory and invasive capacities of the cells. Notably, the knockdown
of TRIM59 was able to decrease the protein level of matrix metalloproteinase
(MMP)-2 without altering the levels of MMP-9, and conversely the overexpression
of TRIM59 was able to increase the protein level of MMP-2. Importantly, the
downregulation of TRIM59 in D283 cells was able to inhibit the levels of
phosphorylated (p)-AKT (Ser473), glycogen synthase kinase 3 ?(GSK3?; Ser9) and
phosphoinositide 3-kinase (PI3K) p85 (Tyr458) without altering the levels of
total protein. The data from the present study suggest that TRIM59 induces
epithelial-to-mesenchymal transition and promotes migration and invasion by
PI3K/AKT signaling pathway in medulloblastoma. This data may provide novel
insight into tumor metastasis and pave the way for the development of therapeutic
strategies for the treatment of medulloblastoma in the clinic.