miR-577 inhibits glioblastoma tumor growth via the Wnt signaling pathway.

Abstract:

:microRNAs (miRNAs) are commonly altered in glioblastoma. Publicly available algorithms suggest the Wnt pathway is a potential target of miR-577 and the Wnt pathway is commonly altered in glioblastoma. Glioblastoma has not been previously evaluated for miR-577 expression. Glioblastoma tumors and cell lines were evaluated for their expression of miR-577. Cell lines were transfected with miR-577, miR-577-mutant, or control mimics to evaluate the effect of miR-577 expression on cell proliferation in vitro and in an animal model. Wnt pathway markers were also evaluated for their association with miR-577 expression. miR-577 expression was decreased in 33 of 40 (82.5%) glioblastoma tumors and 5 of 6 glioblastoma cell lines. miR-577 expression correlated negatively with cell growth and cell viability. miR-577 down-regulation was associated with increased expression of the Wnt signaling pathway genes lipoprotein receptor-related protein (LRP) 6 (LRP6) and β-catenin. Western blot analysis confirmed decreased expression of the Wnt signaling pathway genes Axin2, c-myc, and cyclin D1 in miR-577 transfected cells. miR-577 expression is down-regulated in glioblastoma. miR-577 directly targets Wnt signaling pathway components LRP6 and β-catenin. miR-577 suppresses glioblastoma multiforme (GBM) growth by regulating the Wnt signaling pathway.

journal_name

Mol Carcinog

journal_title

Molecular carcinogenesis

authors

Zhang W,Shen C,Li C,Yang G,Liu H,Chen X,Zhu D,Zou H,Zhen Y,Zhang D,Zhao S

doi

10.1002/mc.22304

subject

Has Abstract

pub_date

2016-05-01 00:00:00

pages

575-85

issue

5

eissn

0899-1987

issn

1098-2744

journal_volume

55

pub_type

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