MAGEA6 promotes human glioma cell survival via targeting AMPKα1.

Abstract:

:Melanoma antigen A6 (MAGEA6)/TRIM28 complex is a cancer-specific ubiquitin ligase, which degradates tumor suppressor protein AMP-activated protein kinase (AMPK). We show that MAGEA6 is uniquely expressed in human glioma tissues and cells, which is correlated with AMPKα1 downregulation. It is yet absent in normal brain tissues and human astrocytes/neuronal cells. MAGEA6 knockdown by targeted-shRNA in glioma cells restored AMPKα1 expression, causing mTORC1 in-activation and cell death/apoptosis. Reversely, AMPKα1 knockdown or mutation ameliorated glioma cell death by MAGEA6 shRNA. In vivo, Glioma xenograft tumor growth in mice was largely inhibited following expressing MAGEA6 shRNA. AMPKα1 upregulation and mTORC1 inhibition were observed in MAGEA6 shRNA-bearing xenograft tissues. Collectively, MAGEA6 promotes glioma cell survival possibly via targeting AMPKα1.

journal_name

Cancer Lett

journal_title

Cancer letters

authors

Pan SJ,Ren J,Jiang H,Liu W,Hu LY,Pan YX,Sun B,Sun QF,Bian LG

doi

10.1016/j.canlet.2017.09.051

subject

Has Abstract

pub_date

2018-01-01 00:00:00

pages

21-29

eissn

0304-3835

issn

1872-7980

pii

S0304-3835(17)30620-1

journal_volume

412

pub_type

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