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2017 ; 9
(5
): 2645-2655
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RIZ1 negatively regulates ubiquitin-conjugating enzyme E2C/UbcH10 via targeting
c-Myc in meningioma
#MMPMID28560012
Cai Z
; Zou Y
; Hu H
; Lu C
; Sun W
; Jiang L
; Hu G
Am J Transl Res
2017[]; 9
(5
): 2645-2655
PMID28560012
show ga
RIZ1 has been considered as an important tumor suppressor gene. Our previous
studies have already demonstrated that the expression of RIZ1 is closely related
to the occurrence and development of meningioma. In addition, we also found that
the expression of UbcH10 was related to the pathologic grade of meningioma which
also affected the prognosis of these patients. However, we are lack of the
understanding of the effect of UbcH10 on cell proliferation, cell apoptosis, cell
cycle and other functions in meningioma cells. Besides, the regulation mechanism
between RIZ1 and UbcH10 still remains unclear. In this study, we attempted to
demonstrated that UbcH10 was a downstream target of RIZ1 and reported that UbcH10
silencing might negatively regulate cell proliferation, migration, invasion and
promote apoptosis, which is similar to the cell phenotype that of over expressed
RIZ1. Mechanistically, we proved that UbcH10 was a c-Myc target gene and that
RIZ1 regulated UbcH10 expression in a c-Myc-dependent manner. For the first time,
our study demonstrated that UbcH10 played a key role in the proliferation,
metastasis and apoptosis of primary human malignant meningioma cells. In
addition, the mechanism of RIZ1 regulating UbcH10 is also clear. Our study can
also provide a potential target and new idea for the follow-up molecular
intervention in clinical malignant meningiomas.